This document discusses in-situ hydraulic testing methods for low permeability materials. It defines hydraulic conductivity and permeability, and describes current UK testing practices like packer injection tests. More sophisticated pulse tests and deconvolution analysis methods are presented, which are useful for very low permeability environments. These specialist techniques allow reliable determination of flow models and permeability for applications like nuclear waste repositories.
Bearing capacity of shallow foundations by abhishek sharma ABHISHEK SHARMA
elements you should know about bearing capacity of shallow foundations are included in it. various indian standards are also used. Bearing capacity theories by various researchers are also included. numericals from GATE CE and ESE CE are also included.
Bearing capacity of shallow foundations by abhishek sharma ABHISHEK SHARMA
elements you should know about bearing capacity of shallow foundations are included in it. various indian standards are also used. Bearing capacity theories by various researchers are also included. numericals from GATE CE and ESE CE are also included.
Tunnelling is a serious engineering project.
In addition to large investment cost, the challenges related to long and deep tunnels are considerable.
Important aspects which needs to be considered are related to the construction works, geology, environment and operation. his module highlights all these aspects.
This presentation is useful for GTU students in Building Construction subject in Subsurface investigation the popular topic in syllabus, this includes more images which will help to students & researchers for same.
Stress is a concept fundamental to Rock Mechanics principles and applications. There is a pre-existing state in the rock mass and we need to understand it, both directly, and as a stress state applies to analysis and design.
1. Purpose of Hydro test.
2. Types of Pressure Test.
3. Procedure of Hydro test.
4. Limitations of Pneumatic Test.
5. Hydro testing test Pressure.
6. Test pressure subjected to external pressure.
7. Hydro test Pressure according to different process.
8. Volume required for the Hydro testing.
9. Pipeline De watering, Cleaning & Drying.
A pumping test is a field experiment in which a well is pumped at a controlled rate and water-level response (drawdown) is measured in one or more surrounding observation wells and optionally in the pumped well (control well) itself; response data from pumping tests are used to estimate the hydraulic properties of aquifers, evaluate well performance and identify aquifer boundaries.
Tunnelling is a serious engineering project.
In addition to large investment cost, the challenges related to long and deep tunnels are considerable.
Important aspects which needs to be considered are related to the construction works, geology, environment and operation. his module highlights all these aspects.
This presentation is useful for GTU students in Building Construction subject in Subsurface investigation the popular topic in syllabus, this includes more images which will help to students & researchers for same.
Stress is a concept fundamental to Rock Mechanics principles and applications. There is a pre-existing state in the rock mass and we need to understand it, both directly, and as a stress state applies to analysis and design.
1. Purpose of Hydro test.
2. Types of Pressure Test.
3. Procedure of Hydro test.
4. Limitations of Pneumatic Test.
5. Hydro testing test Pressure.
6. Test pressure subjected to external pressure.
7. Hydro test Pressure according to different process.
8. Volume required for the Hydro testing.
9. Pipeline De watering, Cleaning & Drying.
A pumping test is a field experiment in which a well is pumped at a controlled rate and water-level response (drawdown) is measured in one or more surrounding observation wells and optionally in the pumped well (control well) itself; response data from pumping tests are used to estimate the hydraulic properties of aquifers, evaluate well performance and identify aquifer boundaries.
This is in continuation to my previous post (walk through-piping).
Generally, when we talk about Pipe stress analysis basics, we tend to quickly jump to Failure theories, B31.3, Caesar II, Static & Dynamic, offshore /onshore, jacketed piping etc.
Walk through Pipe stress is to ease into piping stress world with its polite introduction to curious techies, without having hold on Forces/moments/displacement equations.
Pipe Stress Analysis Basics will be taken next.
regards
Ashish
Presentation given by Auli Niemi of Uppsala University on "PANACEA & TRUST Projects Status update" at the EC FP7 Projects: Leading the way in CCS implementation event, London, 14-15 April 2014
The pressure test is a key event in the installation of all Fusible PVC® products, including Fusible C-900®, Fusible C-905®, and FPVC®. There are, in a lot of installations, more events beyond the pressure test that define completion of the project. For pipe supply and fusion services however, the pressure test can define completion of services in the manner expected
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
When stars align: studies in data quality, knowledge graphs, and machine lear...
In situ permeability testing in boreholes
1. www.preene.com
IN-SITU HYDRAULIC TESTING OF LOW
PERMEABILITY MATERIALS
Dr Martin Preene, Preene Groundwater Consulting, UK
Stephan Rohs, Golder Associates, Germany
2. www.preene.com
• Definitions and current UK
practice
• Specialist applications
• Test equipment
• Test interpretation
• Conclusion
SYNOPSIS
3. www.preene.com
PRACTICE PROFILE
Preene Groundwater Consulting is the Professional Practice
of Dr Martin Preene and provides specialist advice and design
services in the fields of dewatering, groundwater engineering
and hydrogeology to clients worldwide
Dr Martin Preene has more than 25 years’ experience on
projects worldwide in the investigation, design, installation
and operation of groundwater control and dewatering
systems. He is widely published on dewatering and
groundwater control and is the author of the UK industry
guidance on dewatering (CIRIA Report C515 Groundwater
Control Design and Practice) as well as a dewatering text book
(Groundwater Lowering in Construction: A Practical Guide to
Dewatering)
4. www.preene.com
• Hydraulic conductivity is a measure of how easily water can pass
through soil or rock. Also known as coefficient of permeability or
permeability
• Symbol k
• Units of velocity – metres/sec, metres/day
• Very wide range of values in natural soils and rocks,10-2 to 10-11 m/s
• Hydraulic conductivity depends on the properties of the soil/rock
and the properties of water. The viscosity of water varies with
temperature, so hydraulic conductivity will vary with temperature
DEFINITION OF PERMEABILITY
5. www.preene.com
• The goal of hydraulic testing is to characterize the hydraulic
properties of the system composed of the borehole and
geological formation
DEFINITION OF HYDRAULIC TESTING
Formation properties:
Permeability
Static formation pressure
Flow model
Borehole properties:
Wellbore storage coefficient
Near wellbore properties:
Skin
6. www.preene.com
• Hydraulic properties (including permeability) cannot be
measured directly
• They are derived from the hydraulic reaction (variation
of pressure and/or flow) of the system:
– Pressure (P) in the test interval as function of time P = f1(t)
– Flow rate (q) of the test interval as function of time q = f2(t)
DEFINITION OF HYDRAULIC TESTING
7. www.preene.com
DEFINITION OF HYDRAULIC TESTINGFLOWRATE
ZEIT
CONSTANT PRESSURE TESTS
Pressure recovery
CONSTANT RATE TESTS SLUG- AND PULSE-TESTS
Pressure recovery
PRESSURE
8. www.preene.com
• Current (and historic) UK practice is defined in BS5930:1999 (amended 2010)
CURRENT UK GEOTECHNICAL PRACTICE
Packer injection
tests (sometimes
referred to as
Lugeon tests)
Variable and
constant head tests
in boreholes,
typically analysed
by the methods of
Hvorslev (1951)
Falling
head
Rising
head
9. www.preene.com
• Analysis methods are based on references from the 1950s and 1960s
CURRENT UK GEOTECHNICAL PRACTICE
New standards (related to Eurocode 7) have being
developed for permeability testing for geotechnical
purposes
BS EN ISO 22282 Geohydraulic Tests
Part 1. General rules
Part 2. Water permeability test in borehole without packer
Part 3. Water pressure test in rock
Part 4. Pumping tests
Part 5. Infiltrometer tests
Part 6. Closed packer systems
The new standards use similar methods of analysis to
BS5930
More sophisticated methods of testing and analysis have
been developed outside the geotechnical industry
10. www.preene.com
• The specialist testing and interpretation methods described
in this presentation are derived from methods used in
reservoir engineering in the oil and gas industries
• Potential applications related to construction and
geotechnics include:
– Nuclear repository engineering
– High specification cut-off walls
– Critical consolidation analyses
– Unconventional gas (shale gas) development
– Gas storage caverns
– Deep geothermal systems
APPLICATIONS FOR SPECIALIST TESTING
11. www.preene.com
• In moderate to high permeability
environments constant rate tests and/or slug
tests are appropriate
• In low permeability environments the choice
of viable test methods is limited:
– Very low flow rates involved
– Large wellbore storage effect
– Time constraints
TEST DESIGN
12. www.preene.com
• Pulse tests are an appropriate hydraulic test method for very low
permeabilities
• For a pulse test a defined volume of test fluid is injected or extracted from
the test interval, which results in a pressure decrease or increase. The
subsequent pressure recovery is used in the analysis
TEST DESIGN
2250
2500
2750
3000
3250
3500
3750
4000
4250
4500
0 5 10 15 20 25 30 35 40 45 50
Elapsed Time [hrs]
Pressure[kPa]
15
16
17
18
19
20
Temperature[°C]
P2 (Interval)
T2 (Interval)
PW DEF
INF +
COM PSR
13. www.preene.com
• A typical pulse test consists of the following steps:
1. Packer Inflation (INF) and Packer Compliance
(COM)
2. Pressure Static Recovery (PSR)
3. Pulse Injection (PI) or Pulse Withdrawal (PW)
4. Packer Deflation (DEF)
TEST DESIGN
14. www.preene.com
TEST EQUIPMENT
Control lines
Pressure gauges
Shut-in tool
Upper Packer
Test interval
Lower Packer
Main parts of the downhole
equipment
1. Packer to isolate the
section of interest
2. Pressure gauges
3. Shut-in tool (SIT)
15. www.preene.com
• Volume change of test interval due to:
1. Packer compliance
2. Borehole convergence
• Temperature change
• Borehole history effects
INFLUENCES ON TEST RESPONSE
16. www.preene.com
• Traditional geotechnical methods of analysis are based on the
analysis of pressure (or head) vs time (e.g. Hvorslev analysis)
• More sophisticated analyses use the ‘first derivative’ (the rate of
change of fluid pressure with time) as well as pressure vs. time
• Furthermore, tests are interpretated against the wider geological
context and conceptual model
– Suitable flow regime (porous media, multiple fissures, single fissure)
– Borehole history
– Strata type and hydrogeological conceptual model
• The desired outcome is to ‘test interpretation’ rather than simply
‘analysing’ the test data
ANALYSIS METHODS
17. www.preene.com
– Pulse test analysis method is based on a signal processing
technique known as deconvolution, which:
1. Increases the ability to identify an appropiate flow model
2. Improves the sensitivity of the analysis with regard to
permeability
– Analysis is normally done
by numerical modelling
using proprietary software
packages
– Multiple analyses allow
better interpretation of
test results
– The numerical analysis
allows a full test simulation
TEST INTERPRETATION
18. www.preene.com
• Parameter correlation
– e.g. influence of different borehole
histories on parameters, including
formation permeability and static
formation pressure
• Relationship between
different parameters (e.g.
static formation pressure
and permeability)
TEST INTERPRETATION
19. www.preene.com
• More sophisticated methods of permeability testing and
analysis have been developed in other industries and may
have applications in geotechnical engineering
• Pulse tests are an appropriate method to measure the
hydraulic properties of very low permeable formations
• The deconvolution method of analysis allows a reliable flow
model identification and permeability estimation and, in
combination with statistical methods, the reliability of the
derived parameters and connected uncertainties can be
quantified
• These methods are likely to be used in any future
investigations for nuclear repository engineering
CONCLUSION
20. www.preene.com
IN-SITU HYDRAULIC TESTING OF LOW
PERMEABILITY MATERIALS
Dr Martin Preene, Preene Groundwater Consulting, UK
Stephan Rohs, Golder Associates, Germany