The document discusses the performance of electrical submersible pumps (ESPs) in the Messla oil field in Libya. It finds that ESP run life has sharply decreased in recent years due to a gap between reservoir management and ESP system reliability. To improve the system for the next 5-10 years, it recommends fixing pump setting depths based on predicted reservoir pressures. This will improve reliability, better prepare stock inventory, and reduce costs.
Performance, Optimization and CFD Analysis of Submersible Pump Impellerijsrd.com
To improve the efficiency of submersible flow pump, Computational Fluid Dynamics (CFD) analysis is one of the advanced tools used in the pump industry. A detailed CFD analysis was done to predict the flow pattern inside the impeller which is an active pump component. From the results of CFD analysis, the velocity and pressure in the outlet of the impeller is predicted. CFD analyses are done using ANSYS CFX software. In this research paper we will modified the impeller design by choosing some parameter.
Natural Gas Pipeline Transmission Cost & EconomicsVijay Sarathy
In any pipeline project, an economic analysis has to be performed to ensure the project is a viable investment. The major capital components of a pipeline system consists of the pipeline, Booster station, ancillary machinery such as mainline valve stations, meter stations, pressure regulation stations, SCADA & Telecommunications. The project costs would additionally consist of environmental costs & permits, Right of Way (ROW) acquisitions, Engineering & Construction management to name a few.
The following tutorial is aimed at conducting a pipeline economic analysis using the method of Weight Average Capital Cost (WACC) to estimate gas tariffs, project worth in terms of Net Present Value (NPV), Internal Rate of Return (IRR), Profit to Investment Ratio (PIR) and payback period. The cost of equity is estimated using the Capital Asset Pricing Model (CAPM).
Oil & Gas Pipelines are often subjected to an operation called ‘Pigging’ for maintenance purposes (For e.g., cleaning the pipeline of accumulated liquids or waxes). A pig is launched from a pig launcher that scrapes out the remnant contents of the pipeline into a vessel known as a ‘Slug catcher’. The term slug catcher is used since pigging operations produces a Slug flow regime characterized by the alternating columns of liquids & gases. Slug catcher’s are popularly of two types – Horizontal Vessel Type & Finger Type Slug catcher. However irrespective of the type used, the determination of the slug catcher volume becomes the primary step before choosing the slug catcher type.
Performance, Optimization and CFD Analysis of Submersible Pump Impellerijsrd.com
To improve the efficiency of submersible flow pump, Computational Fluid Dynamics (CFD) analysis is one of the advanced tools used in the pump industry. A detailed CFD analysis was done to predict the flow pattern inside the impeller which is an active pump component. From the results of CFD analysis, the velocity and pressure in the outlet of the impeller is predicted. CFD analyses are done using ANSYS CFX software. In this research paper we will modified the impeller design by choosing some parameter.
Natural Gas Pipeline Transmission Cost & EconomicsVijay Sarathy
In any pipeline project, an economic analysis has to be performed to ensure the project is a viable investment. The major capital components of a pipeline system consists of the pipeline, Booster station, ancillary machinery such as mainline valve stations, meter stations, pressure regulation stations, SCADA & Telecommunications. The project costs would additionally consist of environmental costs & permits, Right of Way (ROW) acquisitions, Engineering & Construction management to name a few.
The following tutorial is aimed at conducting a pipeline economic analysis using the method of Weight Average Capital Cost (WACC) to estimate gas tariffs, project worth in terms of Net Present Value (NPV), Internal Rate of Return (IRR), Profit to Investment Ratio (PIR) and payback period. The cost of equity is estimated using the Capital Asset Pricing Model (CAPM).
Oil & Gas Pipelines are often subjected to an operation called ‘Pigging’ for maintenance purposes (For e.g., cleaning the pipeline of accumulated liquids or waxes). A pig is launched from a pig launcher that scrapes out the remnant contents of the pipeline into a vessel known as a ‘Slug catcher’. The term slug catcher is used since pigging operations produces a Slug flow regime characterized by the alternating columns of liquids & gases. Slug catcher’s are popularly of two types – Horizontal Vessel Type & Finger Type Slug catcher. However irrespective of the type used, the determination of the slug catcher volume becomes the primary step before choosing the slug catcher type.
CASE STUDY: Health analysis of reciprocating engines, compressors and gas pip...Abdul Basit Bashir
This paper refers to a detailed study conducted in March 2017 by SUMICO Technologies to evaluate the mechanical performance and condition of critical reciprocating engines, compressors and associated pipelines using state-of-the-art technologies at a natural gas booster station in Mari Gas Field (Sindh, Pakistan).
Results of the study revealed various hidden areas requiring attention to increase efficiency, reduce operational costs and increase reliability of the plant. This paper describes the technologies used, performance parameters analyzed,some interesting findings and the benefits gained through the study.
Prepared by Abdul Basit Bashir (SUMICO Technologies)
https://www.linkedin.com/in/abdulbasitb/
Conformance Control: water shut-off, water balancing, water cycling and injec...Arif Khan
Address conformance challenges of water cycling, water balancing, water-shut-off, injection efficiency through various approaches (analytical, data mining, numerical).
Using a Hydraulic Ram to Pump Livestock Water - British Columbia
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For more information, Please see websites below:
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Organic Edible Schoolyards & Gardening with Children =
http://scribd.com/doc/239851214 ~
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Double Food Production from your School Garden with Organic Tech =
http://scribd.com/doc/239851079 ~
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Free School Gardening Art Posters =
http://scribd.com/doc/239851159 ~
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Increase Food Production with Companion Planting in your School Garden =
http://scribd.com/doc/239851159 ~
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Healthy Foods Dramatically Improves Student Academic Success =
http://scribd.com/doc/239851348 ~
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City Chickens for your Organic School Garden =
http://scribd.com/doc/239850440 ~
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Huerto Ecológico, Tecnologías Sostenibles, Agricultura Organica
http://scribd.com/doc/239850233
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Simple Square Foot Gardening for Schools - Teacher Guide =
http://scribd.com/doc/239851110 ~
Cavitation Effects in Centrifugal Pumps- A ReviewIJERA Editor
Cavitation is one of the most challenging fluid flow abnormalities leading to detrimental effects on both the
centrifugal pump flow behaviors and physical characteristics. Centrifugal pumps’ most low pressure zones are the
first cavitation victims, where cavitation manifests itself in form of pitting on the pump internal solid walls,
accompanied by noise and vibration, all leading to the pump hydraulic performance degradation. In the present
article, a general description of centrifugal pump performance and related parameters is presented. Based on the
literature survey, some light were shed on fundamental cavitation features; where different aspects relating to
cavitation in centrifugal pumps were briefly discussed.
EXPERIMENTAL STUDIES ON THE INTAKE PORT OF A DIESEL ENGINE TO DETERMINE SWIRLijmech
This paper focuses on experimentalstudies of intake port of a four cylinder diesel engine for different
vacuum pressures and valve lift positions. In this study, the cylinder head is experimented through a paddle
wheel flow setup, which gives the flow coefficient and swirl number asoutput. Main scope of the work is to
understand the flow behaviour through the intake port and finally to determine mean flow coefficient and
mean swirl number for different valve lift ratios L/D, where L is valve lift and D is bore diameter.
ResAssure - The World’s Fastest Reservoir Simulator | A Revolution in Reserve...Stochastic Simulation
This Presentation Will:
1. Introduce a new way of evaluating reservoir uncertainty with RESASSURE
2. Illustrate the concepts used
3. Highlight the benefits achieved
4. Demonstrate the value of the results
Stochastic Simulation has unleashed the world’s fastest reservoir simulator, ResAssure, which is set to revolutionize production planning and reserves reporting in the Oil & Gas industry.
ResAssure easily computes > 1 Million realisations within a 24 hour period, a fraction of the time it currently takes with traditional methods and software packages. The release of ResAssure marks a significant milestone in the history of reservoir simulation – the first real industry technology advance in 30 years.
Dr Wadsley, Chief Technology Officer at Stochastic Simulation, commented “ResAssure is capable of quickly generating more accurate reserve estimates than is currently possible by any other software system. The approach taken generates a complete distribution of history matched models all of which are consistent with the geological model and observed production history. The time taken for this is orders of magnitude faster than current history matching methods.”
“Field development planning based on ResAssure’s distribution of models (rather than just upon a single history-matched model using conventional methodologies) will significantly reduce uncertainty and risk.” he added.
By enabling faster and more accurate analysis of dynamic subsurface geological data than has previously been possible, ResAssure markedly reduces the risk in the development of oil and gas fields by narrowing the range of uncertainty in reserves estimates: thereby supporting better production and financing decisions, with substantial increases in project ROI.
ResAssure’s innovation in reservoir simulation solves fully-implicit, dynamic three-phase fluid flow equations for every geological realisation. The speed breakthrough was achieved by a combination of proprietary algorithms, polygonal gridding and aggressive spatial coarsening and time stepping, based upon a conventional finite-difference discretization of the reservoir.
Key Insights Identified:
1. Consistency between volumetric, material balance and fractional flow places very strong constraints on feasible reservoir models.
2. The mathematics of reservoir simulation is NOT complex – it is the geology which is complex.
3. Reserves uncertainty is not quantified, but estimated from current ‘best’ estimate in an ad hoc unsystematic way.
4. What’s the point of preserving mass balance in the simulator when the hydrocarbons in the reservoir are imprecise and we don’t include all production data – mass balance should act to regularise our solution, not to define it.
5. The role of reservoir simulation is not to compute an exact solution of a poorly defined geological model – it is to define a range of feasible reservoir models and associated production forecasts.
Centrifugal Pump Testing Standards - Presentation by ITTSahyog Shishodia
This presentation will give you all the details you need to know about Centrifugal Pumps Testing Standards.
It talks about API 610 , HI1.6, ISO 9906. What standards to follow while specifying pump testing and tolerances.
Production Optimization using nodal analysis. The nodal systems analysis approach is a very flexible method
that can be used to improve the performance of many well
systems. The nodal systems analysis approach may be used to analyze
many producing oil and gas well problems. The procedure can
be applied to both flowing and artificial
CASE STUDY: Health analysis of reciprocating engines, compressors and gas pip...Abdul Basit Bashir
This paper refers to a detailed study conducted in March 2017 by SUMICO Technologies to evaluate the mechanical performance and condition of critical reciprocating engines, compressors and associated pipelines using state-of-the-art technologies at a natural gas booster station in Mari Gas Field (Sindh, Pakistan).
Results of the study revealed various hidden areas requiring attention to increase efficiency, reduce operational costs and increase reliability of the plant. This paper describes the technologies used, performance parameters analyzed,some interesting findings and the benefits gained through the study.
Prepared by Abdul Basit Bashir (SUMICO Technologies)
https://www.linkedin.com/in/abdulbasitb/
Conformance Control: water shut-off, water balancing, water cycling and injec...Arif Khan
Address conformance challenges of water cycling, water balancing, water-shut-off, injection efficiency through various approaches (analytical, data mining, numerical).
Using a Hydraulic Ram to Pump Livestock Water - British Columbia
`
For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children =
http://scribd.com/doc/239851214 ~
`
Double Food Production from your School Garden with Organic Tech =
http://scribd.com/doc/239851079 ~
`
Free School Gardening Art Posters =
http://scribd.com/doc/239851159 ~
`
Increase Food Production with Companion Planting in your School Garden =
http://scribd.com/doc/239851159 ~
`
Healthy Foods Dramatically Improves Student Academic Success =
http://scribd.com/doc/239851348 ~
`
City Chickens for your Organic School Garden =
http://scribd.com/doc/239850440 ~
`
Huerto Ecológico, Tecnologías Sostenibles, Agricultura Organica
http://scribd.com/doc/239850233
`
Simple Square Foot Gardening for Schools - Teacher Guide =
http://scribd.com/doc/239851110 ~
Cavitation Effects in Centrifugal Pumps- A ReviewIJERA Editor
Cavitation is one of the most challenging fluid flow abnormalities leading to detrimental effects on both the
centrifugal pump flow behaviors and physical characteristics. Centrifugal pumps’ most low pressure zones are the
first cavitation victims, where cavitation manifests itself in form of pitting on the pump internal solid walls,
accompanied by noise and vibration, all leading to the pump hydraulic performance degradation. In the present
article, a general description of centrifugal pump performance and related parameters is presented. Based on the
literature survey, some light were shed on fundamental cavitation features; where different aspects relating to
cavitation in centrifugal pumps were briefly discussed.
EXPERIMENTAL STUDIES ON THE INTAKE PORT OF A DIESEL ENGINE TO DETERMINE SWIRLijmech
This paper focuses on experimentalstudies of intake port of a four cylinder diesel engine for different
vacuum pressures and valve lift positions. In this study, the cylinder head is experimented through a paddle
wheel flow setup, which gives the flow coefficient and swirl number asoutput. Main scope of the work is to
understand the flow behaviour through the intake port and finally to determine mean flow coefficient and
mean swirl number for different valve lift ratios L/D, where L is valve lift and D is bore diameter.
ResAssure - The World’s Fastest Reservoir Simulator | A Revolution in Reserve...Stochastic Simulation
This Presentation Will:
1. Introduce a new way of evaluating reservoir uncertainty with RESASSURE
2. Illustrate the concepts used
3. Highlight the benefits achieved
4. Demonstrate the value of the results
Stochastic Simulation has unleashed the world’s fastest reservoir simulator, ResAssure, which is set to revolutionize production planning and reserves reporting in the Oil & Gas industry.
ResAssure easily computes > 1 Million realisations within a 24 hour period, a fraction of the time it currently takes with traditional methods and software packages. The release of ResAssure marks a significant milestone in the history of reservoir simulation – the first real industry technology advance in 30 years.
Dr Wadsley, Chief Technology Officer at Stochastic Simulation, commented “ResAssure is capable of quickly generating more accurate reserve estimates than is currently possible by any other software system. The approach taken generates a complete distribution of history matched models all of which are consistent with the geological model and observed production history. The time taken for this is orders of magnitude faster than current history matching methods.”
“Field development planning based on ResAssure’s distribution of models (rather than just upon a single history-matched model using conventional methodologies) will significantly reduce uncertainty and risk.” he added.
By enabling faster and more accurate analysis of dynamic subsurface geological data than has previously been possible, ResAssure markedly reduces the risk in the development of oil and gas fields by narrowing the range of uncertainty in reserves estimates: thereby supporting better production and financing decisions, with substantial increases in project ROI.
ResAssure’s innovation in reservoir simulation solves fully-implicit, dynamic three-phase fluid flow equations for every geological realisation. The speed breakthrough was achieved by a combination of proprietary algorithms, polygonal gridding and aggressive spatial coarsening and time stepping, based upon a conventional finite-difference discretization of the reservoir.
Key Insights Identified:
1. Consistency between volumetric, material balance and fractional flow places very strong constraints on feasible reservoir models.
2. The mathematics of reservoir simulation is NOT complex – it is the geology which is complex.
3. Reserves uncertainty is not quantified, but estimated from current ‘best’ estimate in an ad hoc unsystematic way.
4. What’s the point of preserving mass balance in the simulator when the hydrocarbons in the reservoir are imprecise and we don’t include all production data – mass balance should act to regularise our solution, not to define it.
5. The role of reservoir simulation is not to compute an exact solution of a poorly defined geological model – it is to define a range of feasible reservoir models and associated production forecasts.
Centrifugal Pump Testing Standards - Presentation by ITTSahyog Shishodia
This presentation will give you all the details you need to know about Centrifugal Pumps Testing Standards.
It talks about API 610 , HI1.6, ISO 9906. What standards to follow while specifying pump testing and tolerances.
Production Optimization using nodal analysis. The nodal systems analysis approach is a very flexible method
that can be used to improve the performance of many well
systems. The nodal systems analysis approach may be used to analyze
many producing oil and gas well problems. The procedure can
be applied to both flowing and artificial
Variable Speed Drives for Gas compressor OperationsVijay Sarathy
To understand the effects of Variable Speed Drive (VSD) and Fixed Speed Drive (FSD) mode of operation on gas compressor start-up, a case study is made.
Pumps are widely used in process plants to transfer fluid from one point to the other and the Process Engineer is often required to specify the correct size of pumps that will optimize system performance. Though pump sizing can easily be performed using software such as Pipe-Flo®, understanding the basic principle will not only aid one to better interpret the results obtained by pump sizing software but also to better design pumps. Centrifugal pump sizing overview is presented in this tutorial.
This paper investigates excessive fuel consumption of
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Pressure versus volume (PV) analysis techniques will identify
deficiencies, quantify fault severity, and will be used to
estimate the resulting excessive fuel consumption. Empirical
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after the fault correction and are used to calculate immediate
economic savings from repairs. Performance and capacity
improvements are also analyzed, providing a complete economic
picture of maintenance and operational payback.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Pumps are used in virtually all industries and are big uses of energy. This presentation shows methods of condition monitoring and how to optimise time to overhaul.
Affinity Laws for Variable Speed Centrifugal PumpsVijay Sarathy
In retrofit jobs, depending on the application & plant revamps, fixed speed pumps are retrofitted with a variable frequency drive (VFD) to enable them to be operated at a different set of operating conditions. In Brownfield projects, design engineers would sometimes face situations where the manufacturer's datasheets indicate performance curves only for rated speeds & it becomes necessary to evaluate what are the other operating ranges the same pump can be used for after retrofitting.
In the following short article, I've put up some points covering
1. Advantages of Variable Frequency Drives
2. When VFD’s Are Not Advantageous
3. Selection Process - New Pumps & Retrofit Pumps
4. Example Case Study to generate Performance Curves for VSD Retrofit (Single Stage End Suction Centrifugal Pump)
Case studies in cfd analysis by kk parthibanparthi2006
CFD is being used nowadays extensively in many areas. We had an opportunity to optmise the duct system using CFD. The case stuy is presented in this paper.
SAIF ALDIN ALI MADIN
سيف الدين علي ماضي
S96aif@gmail.com
Presentation
on
Axial Flow Compressor
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Construction
Working
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State of Artificial intelligence Report 2023kuntobimo2016
Artificial intelligence (AI) is a multidisciplinary field of science and engineering whose goal is to create intelligent machines.
We believe that AI will be a force multiplier on technological progress in our increasingly digital, data-driven world. This is because everything around us today, ranging from culture to consumer products, is a product of intelligence.
The State of AI Report is now in its sixth year. Consider this report as a compilation of the most interesting things we’ve seen with a goal of triggering an informed conversation about the state of AI and its implication for the future.
We consider the following key dimensions in our report:
Research: Technology breakthroughs and their capabilities.
Industry: Areas of commercial application for AI and its business impact.
Politics: Regulation of AI, its economic implications and the evolving geopolitics of AI.
Safety: Identifying and mitigating catastrophic risks that highly-capable future AI systems could pose to us.
Predictions: What we believe will happen in the next 12 months and a 2022 performance review to keep us honest.
Unleashing the Power of Data_ Choosing a Trusted Analytics Platform.pdfEnterprise Wired
In this guide, we'll explore the key considerations and features to look for when choosing a Trusted analytics platform that meets your organization's needs and delivers actionable intelligence you can trust.
STATATHON: Unleashing the Power of Statistics in a 48-Hour Knowledge Extravag...sameer shah
"Join us for STATATHON, a dynamic 2-day event dedicated to exploring statistical knowledge and its real-world applications. From theory to practice, participants engage in intensive learning sessions, workshops, and challenges, fostering a deeper understanding of statistical methodologies and their significance in various fields."
06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Data and AI
Round table discussion of vector databases, unstructured data, ai, big data, real-time, robots and Milvus.
A lively discussion with NJ Gen AI Meetup Lead, Prasad and Procure.FYI's Co-Found
The Building Blocks of QuestDB, a Time Series Databasejavier ramirez
Talk Delivered at Valencia Codes Meetup 2024-06.
Traditionally, databases have treated timestamps just as another data type. However, when performing real-time analytics, timestamps should be first class citizens and we need rich time semantics to get the most out of our data. We also need to deal with ever growing datasets while keeping performant, which is as fun as it sounds.
It is no wonder time-series databases are now more popular than ever before. Join me in this session to learn about the internal architecture and building blocks of QuestDB, an open source time-series database designed for speed. We will also review a history of some of the changes we have gone over the past two years to deal with late and unordered data, non-blocking writes, read-replicas, or faster batch ingestion.
ViewShift: Hassle-free Dynamic Policy Enforcement for Every Data LakeWalaa Eldin Moustafa
Dynamic policy enforcement is becoming an increasingly important topic in today’s world where data privacy and compliance is a top priority for companies, individuals, and regulators alike. In these slides, we discuss how LinkedIn implements a powerful dynamic policy enforcement engine, called ViewShift, and integrates it within its data lake. We show the query engine architecture and how catalog implementations can automatically route table resolutions to compliance-enforcing SQL views. Such views have a set of very interesting properties: (1) They are auto-generated from declarative data annotations. (2) They respect user-level consent and preferences (3) They are context-aware, encoding a different set of transformations for different use cases (4) They are portable; while the SQL logic is only implemented in one SQL dialect, it is accessible in all engines.
#SQL #Views #Privacy #Compliance #DataLake
1. Messla Electrical Submersible Pump Future Performance
Production Engineer. S. Khalifa.
Abstract: Artificial Lift Systems widely used in Libyan oil fields specifically Electrical Submersible
Pumps (ESP). The systems occupied almost 80 % of Libyan oil fields production time, equipment,
efforts, and budget. ESP stakeholders and activities supposed to be a part of the comprehensive oil
field development management and planning stages. Therefore, identifying each of those stages and
the people who take part in the processes is fundamental. The paper revises the ESP system
performance in AGOCO-Messla oil field. The conclusions showed that lately sharp decreased pump
run life is referred to a credibility gap between reservoir development management and the system.
Therefore, by predicting the next 5 to 10 years’ ESP performance we recommend to fixe setting pump
depth just like initial situation was to improve the system reliability, stock inventory and budget costs.
Introduction: Practically, ESP operations experiences in mature oil fields suppose to
exhibit a good pump run life and flexibilities. But worldwide failures information gathered
has no data consistency as well as difficult issue common to all ESP failure-tracking system is
how to treat used equipment [1,2]. Hence run-life measurements standard has several
approaches because no single approach is perfect. yet a complete Life Cycle costs of the
system (cost to purchase install operate, maintain, and dispose of that equipment) not included [3, 4, 5, 6,
7, 14].
On management base, there are two different models - operator with experience who depends
on the alliance between operating companies and service professionals. The system result is
generally depending the feedback knowledge of the operator, supported by the credibility of
the specific service company. At the other side operators without experience is based on
framework agreements where the service companies design, provide and operate the ESP.
This method supposes to be a good start during the learning curve of operators. [8, 9, 10,11,
12] Practically both methods expressed full delegation of ESP management by neglecting the
responsibilities of those who should evaluate the process performance (Reservoir management or
Development engineers).
On technical base, ESP users often underestimate how wells inflow may have developed
when reservoir pressure declines. That the limitation of achieving full potential in pumped
wells is the accurate pressure calculation at the pump intake. Hence precise design calculation
depends on harmony between Bottom Hole Flowing Pressure to Pump Intake Pressure (PIP).
Each pressure differences have a specific pump speed referenced to Hz. Frequency. Yet, none
of the computer programs works the exact Pump Setting Depth in order to obtain pressure
harmony, that’s PSD usually calculated and/or referenced only to avoid Bubble Point
Pressure depth? This can be adjusted through alternating frequency Variable Speed Derive
[13]. The situation is critical in big oil fields where only fixed frequency available.
From the above background we could conclude that Engineering Feedback knowledge to
stakeholders are the most affecting credibility management issue, while Gas Oil Ratio,
optimum PSD are the most affecting design items.
shakierk@yahoo.com 25/08/2018
Page 1
2. Messla ESP Experience.
To investigate how flexible and economic the current ESP system supposed to be carried
through sequence of events leading up to the observed mode, item and description of failure.
That normally failure mode or item supposed to be inspected to uncover the underlying
human or organizational factors that were influential in the failure, then depth investigation
required.
In Messla the system has no depth failure investigation reports. Only pump performance
observation reports and normal pull/run reports. Initially Messla considered as big oil fields
with 120 wells (see reservoir properties in table 1). Initially PSD fixed at 6000 ft (Slightly dipper than
mid way perfs. to well head) for all wells, the harmony of PIP to BHFP at fixed 50Hz was good
(This provides a sort of reliability to a new system experiment). Earlier average pump run
lives were 2.5 years (Most pump performance mode recognized was up thrust-upper washer’s damages
reported).
Initial RP Current avg. RP BPP
Avg. current
Field WC%
GOR
Scf/bbl
Decline Rate
%/year
WC%
increase
/year
Pressure Rate
decline/year
3950 2350 1340 30 350 5 1.50
20-30
Table (1)-Data according to RED-AGOCO-NOC technical meeting book.
Lately during the last 8 years’ pumps run life decreased to few months (see table2). The
reason of this decreased pump run lives is the decline in reservoir pressure, hence pumps
design and pump performance should be changed accordingly (see table 1). (Pump performance
recognized, low WHP, usually chock back solution applied- no flow to surface, gas lock was the diagnosed
reason, usually gas handler or separator reruns- workover kill fluid usually swabbed manually that ESP cannot
lifted, it takes from 3 days to a week).
Year 2018 2017 2016 2015 2014
Avg. No of wells on production 60 60 60 53 37
ESP. Off Down Hole 27* 38 34 28 16
Table (2) represent ODH numbers during last 5 years. *up to 23-August/ 2018.
Also during this period ESP equipment and accessories stock were not well prepared and
flexible (limited stock). This is due to the complex purchasing progress when it is based on
individual well base as for large field such Messla. Electronic like Vortex and K-45 were used
but there were no analysis reports. Also VSD has tested on some wells without an overall
interpretation reports about optimum future pump PSD for fixed 50Hz.
Therefore, it is important to predict future needs to forecast reservoir uncertainty to select the
right ESP equipment and to prepare stock in advance. Table (3, 4) represent PSD and Total
Dynamic Head calculation required for the next 5, 10 years based on the same design
formulas used in Messla field [12]. Wells were classified in to 3 groups based on PI intervals
as shown in table (3).
shakierk@yahoo.com 25/08/2018
Page 2
3. Table (3) Represent well groups referenced to the Productivity index’s interval. Then calculated reservoir properties after 5, and 10 years.
Only one well with PI =28 excluded.
From table (3, 4) two choices provided, either to fix the PSD between 5 to 10 years’ targets,
for example 7300 ft. group A, 7200 group B, and 7100 group C. This would avoid gas
problems (Below BPP-Gas devises not required), maintain the stock, and maintain reservoir
uncertainty. The other choice is to keep the existing individual random PSD. This would
complicate the system.
It is important to know that PSD is going to be lowered dipper to avoid gas due to declined
avg. pressure. That would restrict Pump efficiency at fixed 50 Hz. (an extra stages supposed
to back up the existing one to substitute the pressure difference. Hence we recommend VSD
test to improve the calculated extra stages required.
Wells group
P.S.D After
5 yrs.
T.D.H After 5 yrs.
+WHP+tbg
friction
Required
stgs.
P.S.D After
10 yrs.
T.D.H After 10
yrs.+WHP+tbg
friction
Required stgs.
A 7163 4573 388 7449 4922 424
B 7074 4485 290 7385 4858 314
C 6946 4357 147 7279 4753 165
Table (4) represents calculated pump setting depth, total dynamic head required, and stages required. Stages calculate need VSD to confirm
pump performance due to new PSD.
Rate 500 650 1000 1300 2000
Pump type DN450 D725N DN1100 D1400N GN2100
Ft/stg 50Hz. 11.77 16.34 16.12 14.51 28.93
Table (5) stages required are calculated based on most frequent used pumps in Messla field. Red colour represents Group B
Conclusion
In one side, the initial over range rates (up thrust), the lately low pressure wellhead, choke
back solutions, long time duration taking to swab the kill fluid, were mostly indicating low
stages pumping performance. Also the non-flexible ESP stock referred to the individual
purchase orders base. To improve Messla field development, the choice to fixed PSD is
strongly recommended. That would demonstrate in head of time the possible future technical,
warehouse, and management troubleshooting issues.
Recommendation
shakierk@yahoo.com 25/08/2018
Page 3
Well
groups
IP interval Avg. PI Total
Q
Total L.
grd. 5 Ys
Total L.
grd. 10
Ys
BHSP
5trs.
BHSP
10yrs.
BHFP
5yrs.
BHFP
10yrs.
Datum
A 1-4=29 well 2 500 0.383 0.39 2225 2100 1975 1875 8800
B 5-8=25 well 6.5 1200 0.383 0.39 2225 2100 2025 1915 8800
C 9-16=30 well 12.5 1850 0.383 0.39 2225 2100 2065 1952 8800
4. Since normal ESPs can handle free gas up to approximately 20% volume
fraction without gas separation or gas handling equipment [9]. Messla
GOR is too low to consider complex design and/or advance equipment. To
confirm that a down whole sample test at several depths is required to
approve how much gas evolved.
VSD is strongly recommended to determine the extra stages % required to
substitute pressure decline.
Pumps, motors, cables, and pump inventory should be re-evaluated to
fulfil shortage for next 5 years.
Purchasing new equipment or replacing old equipment will prepare based
on the new stock shortages.
o Due to the calculated TDH, 3 pumps in tandem or more will be
expected. Tandem should be selected as short as possible.
o Three or more pumps in tandem will provide inventory options to
designer to fulfill shortages using only the 3rd
tandem as the
changeable item. The new inventory should be based on this
arrangement.
o Special strength care should be paid when 3 tandem pump and/or
motors purchase, that shaft limited by-the maximum burst-pressure
rating of the pump housing - the maximum allowed axial load on
the pump’s main thrust bearing.
Existing cables should be extended for the new PSD requirements’ as the
field not targeted to produce on full wells load, hence No overseas
purchasing would be required.
References:
[1] Challenges of Using Electrical Submersible Pump (ESP) In High Free Gas Applications. Authors,
Ali Suat Bagci (Eclipse Petroleum Technology Ltd.) | Muharrem Murat Kece (Eclipse Petroleum
Technology Ltd.) | Jocsiris Delida Nava Rivero (Eclipse Petroleum Technology Ltd.). DOI
https://doi.org/10.2118/131760MS SPE-131760-MS. Publisher Society of Petroleum Engineers. Source
International Oil and Gas Conference and Exhibition in China, 8-10 June, Beijing, China- Publication
Date 2010
[2] THE IMPORTANCE OF ELECTRICAL SUBMERSIBLE PUMPS (ESPs) IN MAXIMIZING OIL
RECOVERY by Mazen H.Modahi Submitted in partial fulfilment of the requirements for the degree of
Master of Engineering Major Subject: Petroleum Engineering at Dalhousie University Halifax, Nova
Scotia July, 2012
[3] ELECTRICAL SUBMERSIBLE PUMP SURVIVAL ANALYSIS MICHELLE PFLUEGER
Petroleum Engineer, Chevron Corp. & Master’s Degree Candidate Advisor Dr. Jianhua Huang with
help from PHD Candidate Sophia Chen Department of Statistics, Texas A&M, College Station
MARCH 2011
[4] ARTIFICIAL LIFT MANAGEMENT RECOMMENDATIONS AND SUGGESTIONS OF BEST
PRACTICES Clemente-Marcelo Hirschfeldt* Oil Production Consulting & Training, Comodoro
Rivadavia, Argentina Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia,
Argentina e-mail: marcelo@oilproduction.net (Received Apr. 04, 2011; Accepted Jun. 07, 2011)
shakierk@yahoo.com 25/08/2018
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5. [5] Titel of thesis: Artificial Lift – Electrical Submerged Pump, best practice and future demands within
subsea Applications-Faculty of Science and Technology MASTER’S THESIS-Spring semester, 2010.
Faculty supervisor: Conrad Carstensen, UiS External supervisor: Ole Johan Samdal, Statoil ASA.
[6] Electric Submersible Pumps for Artificial Lift Intelligence John Algeroy Rosharon, Texas, USA for
help in preparation of this article, thanks to Ryan Cox, Rosharon, Texas; Ramez M. Guindi and Grant
Harris, Houston; and Barry Nicholson, Sugar Land, Texas. espWatcher, FloWatcher, MultiPort,
MultiSensor, Phoenix, QUANTUM, RapidSeal and REDA are marks of Schlumberger.
[7]. Vachon G and Furui K: “Production Optimization in ESP Completions with Intelligent Well
Technology by Using Downhole Chokes to Optimize ESP Performance,” paper SPE 93621, presented
at the 14th SPE Middle East Oil and Gas Show and Conference, Bahrain, March 12–15, 2005. 6
[8] Analysis of Influence Factors of Electric Submersible Pump Performance in X Oilfield Ren
Xidong1 , Meng Fanyuan2 , Tian Yuming2 , Du Chunyu2 , Xu Jialiang2 1 (College of Petroleum
Engineering, Northeast Petroleum University, Daqing 163318, China) 2 (College of Petroleum
Engineering, China University of Petroleum (Beijing), Beijing 102249, China).
[9] Nolen, K.B.Analysis of Electric Submersible Pumping Systems [J], SPE 16196, 1987.
[10] Sawatyn S J, Grames K N. The analysis and prediction of Electric Submersible Pump Failures in
the Milne Point Field, Alaska [J]. SPE56663, 2011.
[10] Harun A F, Prado M G. A Simple Model to Predict Natural Gas Separation Efficiency in Pumped
Wells [J]. SPE63045, 2003.
[11] Challenges of Using Electrical Submersible Pump (ESP) In High Free Gas Applications Article ·
April 2013 with 414 Reads DOI: 10.2118/131760-MS Cite this publication Baker Hughes, a GE
Company Muharrem Murat Kece- Jocsiris Delida Nava -Heriot-Watt University
[12] Gabor Takacs, “Electrical submersible pump manual: design, operations, and maintenance”,
published by Elsevier Inc., May 2009.
[13] Divine, D. L., “A Variable Speed Submersible Pumping System”, Paper SPE 8241 presented at the
54th Annual Fall Technical Conference and Exhibition held in Las Vegas, September 23 – 26, 1979.
[14] C. Jose, K. Frank, 2004, “CFD Analysis of Electric Submersible Pumps (ESP) Handling Two-
Phase Mixtures”, Journal of Energy Resources Technology, 126, pp. 99-104.
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