This document discusses directional drilling techniques and their applications. It begins by defining directional drilling as deflecting a wellbore in a specified direction to reach a target below the surface. It then lists several applications of directional drilling including drilling multiple wells from a single location, drilling in inaccessible locations, avoiding geological problems, sidetracking, relief well drilling, and horizontal drilling. The document also discusses directional drilling applications in mining, construction, and geothermal engineering. It provides details on well profiles, azimuth and quadrants, horizontal well types, and directional drilling assemblies for building angle and holding angle.
The objective of this project is to investigate the measurement methods while drilling a well and perform a general assessment and comparison on the methods.
Drilling fluids are absolutely essential during the drilling process and considered the primary well control.
Know more now about such a very important component of the drilling process.
Introduction of Directional Drilling
By Syamsu Setiabudi
• Reference and Coordinates SYSTEM
• Types AND Calculation of DIRECTIONAL Well Trajectories
• Directional SURVEY & TOOLS
• DIRECTIONAL DRILLING OPERATION
• BHA BASIC DESIGN & APPLICATION
The objective of this project is to investigate the measurement methods while drilling a well and perform a general assessment and comparison on the methods.
Drilling fluids are absolutely essential during the drilling process and considered the primary well control.
Know more now about such a very important component of the drilling process.
Introduction of Directional Drilling
By Syamsu Setiabudi
• Reference and Coordinates SYSTEM
• Types AND Calculation of DIRECTIONAL Well Trajectories
• Directional SURVEY & TOOLS
• DIRECTIONAL DRILLING OPERATION
• BHA BASIC DESIGN & APPLICATION
The presentation highlights the root causes of major drilling issues such as formation pressure uncertainty, subsurface feature like mud volcanoes, major fault, poor well planning & etc. Then it elaborates on consequences of all above on examples of wellbore instability, sticking, gumbo & so on.
This is an academic lecture for Diploma in Engineering 7th Semester Mining and Mine Survey Technology. The Course related to this presentation is Basic of well planning.
The presentation highlights the root causes of major drilling issues such as formation pressure uncertainty, subsurface feature like mud volcanoes, major fault, poor well planning & etc. Then it elaborates on consequences of all above on examples of wellbore instability, sticking, gumbo & so on.
This is an academic lecture for Diploma in Engineering 7th Semester Mining and Mine Survey Technology. The Course related to this presentation is Basic of well planning.
The Austrian Standards Institute published ÖNORM B 2203-1 “Underground Works – Works contract, Part 1: Cyclic driving (conventional tunnelling)” in 2001.
This Austrian Standard includes particular directives for tendering procedures, preparation of the bid and terms of contract for the execution of conventional tunnelling called “New Austrian Tunnelling Method (NATM)”.
In addition to the Standard the Austrian Society for Geomechanics in 2011 published the document “The Austrian Practice of NATM Tunnelling Contracts” which describes the application of the Standard in detail with respect to the NATM. The main chapters of the document are
Tendering and Costing as well as Construction and Payment with information in detail about
time-dependent costs,
tunnelling interruptions
, tunnel classes
, difficulties due to water ingress
, over-excavation, excess concrete
, selection of supporting measures and classifying tunnelling
. Examples describing the method are presented in an annex
. The Austrian Society for Geomechanics recommends the download of this document in addition to the Austrian Standard ÖNORM B 2203-1:2001. The document “The Austrian Practice of NATM Tunnelling Contracts” with its annex is free of charge. Learn more: http://www.as-institute.at/en/standards/downloads.html
Closing Lecture: World Tunnel Congress 2014, Iguassu Falls, Brazil
Quo Vadis Tunnel Engineering?Predicting the Unpredictable
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Upstream business in tough condition but future development still promising. Re-entry drilling using hydraulic work over unit in offshore mature filed will viable in economic point of view.
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Horizontal drilling machines are typically heavy-duty vehicles fitted with track drives, operator controls, and drilling machinery. Materials used for pipes include PVC, polyethylene, polypropylene, ductile iron, and steel.
A Non disruptive Technology or a trenchless technique with the help of machine(HDD) for laying any kind of Pipelines including OFC, Power Cable, Water, Sewerage Pipelines & CNG/PNG etc..
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
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Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
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CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
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Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
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2. DIRECTIONAL DRILLING
“Directional drilling is defined as an art and
science involving deflection of a well bore
in a specified direction in order to reach a
predetermined object below the surface of
the earth”.
2
3. APPLICATIONS OF DIRECTIONAL DRILLING
1. Multiple wells from single location.
2. Inaccessible locations.
3. Drilling to avoid geological problems.
• Fault drilling.
• Salt dome drilling.
4. Side tracking and straightening.
5. Relief well drilling.
6. Controlling straight holes.
7. Horizontal well.
8. ERD well.
9. Multilateral drilling.
3
5. MULTIPLE WELLS FROM SINGLE
LOCATION
Optimum number of wells can be drilled from
a single platform or artificial island. This
greatly simplifies gathering systems and
production techniques .
5
9. DRILLING TO AVOID GEOLOGICAL
PROBLEMS
A. FAULT DRILLING:
This eliminates the hazard of drilling a
vertical well through steeply inclined fault
plane which could slip and shear the
casing.
9
11. B. SALT DOME DRILLING
To reach the producing formation which
often lie underneath the over hanging
cap of the dome, the well is first drilled at
one side of the dome and is then
deviated to producing zone to avoid
drilling problems such as large washouts,
lost circulation and corrosion .
11
13. SIDE TRACKING & STRAIGHTENING
It is used as remedial operation either to side
track obstruction by deviating the well bore
away from obstruction by deviating the well
bore back to vertical by straightening out
crooked holes.
13
15. RELIEF WELL DRILLING
The technique is applied to the drilling of
relief wells so that mud may be pumped
into the reservoir of the uncontrolled well.
15
17. ERD WELL
Advantages:
1.Increased horizontal displacement from
central platform.
2. Increased penetration length of reservoir.
3. Require less number of wells to develop a
field.
4. Require less number of platforms to
develop a field in offshore.
17
21. HORIZONTAL WELL
Advantages:
1.Increasing the drainage area.
2.Prevention of gas coning or water coning
problems.
3.Increased penetration of the producing
formation.
4.Increasing the efficiency of enhanced oil
recovery ( EOR ).
5.Improving productivity in fractured
reservoirs by intersecting a numbers of
vertical fractures.
21
25. Mutilateral. Drilling
Multilateral well has been defined as a well
that has more than one horizontal or near
horizontal laterals drilled from single site and
connected back to a single well bore.
Applications
. Greater reservoir exposure.
· Drain more than one reservoir.
· Exploit irregular reservoirs efficiently.
· Speed up reservoir drainage.
· 25
26. Mutilateral. Drilling
· Reduction in drilling cost per unit length
of the well bore contacting, the reservoir
rock.
· Ability to obtain a given length of
horizontal well bore in reservoir where
drag would perhaps limit the length of
single horizontal well bore.
· Reduction in number of slots and thus
the number of production platforms.
26
28. NON PETROLEUM APPLICATIONS
A. MINING INDUSTRY
- Directional wells are used to produce
methane gas that is contained in coal seams.
- Methane presents a safety hazard and must
be drained off before mining operations can
begin.
-In deep coal seams that are beyond the
reach of conventional mining techniques,
directional wells can be drilled for in situ
gasification projects.
28
30. B. CONSTRUCTION INDUSTRY
• A small diameter pilot hole is drilled in a
smooth arc beneath the river until it
immerges on the other side. This acts as a
guide for the large diameter pipe forming
the conduit.
• The hole is drilled through soft sediments
about 40’ below the river bed. This
techniques has been used to cross rivers
up to 200’ wide.
30
32. C.GEO THERMAL ENGINEERING
High geothermal gradient found in some
rocks( e.g. granite) can be harnessed to
provide energy.
Extracting the heat from this rocks requires
the drilling of injection and production
wells.
32
42. A radius of 100ft is commonly
used as target zone depending
on particular requirements e.g
a relief well requires much
smaller target in order to be
effective. Smaller the target,
greater number of correction
runs. So longer drilling time ,
high drilling costs. So the
target zone should be as large
as the geologist/reservoir
engineer can allow. DD’s job is
then to place the wellbore
within the target zone at
minimum cost
42
44. TYPES OF WELL PROFILES
a. L- TYPE
b. S- TYPE
c. J- TYPE
44
45. TYPE I (BUILD AND HOLD OR ‘L’ TYPE)
• This is the most common and simplest
profile for a directional well.
• The well is drilled down vertically to KOP,
where the well is deviated to required
inclination and further maintained to target.
• Shallow KOP selected to reduce inclination.
• This profile can be applied where large
displacements are required at relatively
shallow target depths.
• Under normal condition inclination should be
15 to 55°.
45
47. TYPE II (BUILD HOLD AND DROP OR ‘S’
TYPE)
•This profile is similar to type-I up to tangential
section. Here the profile enters a drop of section
where inclination is reduced and in some cases
becomes vertical as it reaches the target.
•More torque and drag can be expected due to the
additional bend.
•Used where target is deep but horizontal
displacement is relatively small.
•It has also application when completing a well that
intersect multiple producing zones.
•Drilling of relief well where it is necessary to run
parallel to wild well
•Lease or target limitations.
47
49. TYPE III (DEEP KICK OFF AND BUILD ‘J’
TYPE)
• Initial deflection is started well below the
surface and angle is built up to bottom.
• It is used in particular situations like salt dome
drilling, fault drilling and side- tracking or
repositioning of target.
• Disadvantages:
• Formation may be harder & less
responsive to deflection.
• More tripping time to change BHA while
deflecting.
• BUR is more difficult to control.
49
53. HORIZONTAL WELL PROFILES
• HORIZONTAL WELLS ARE CATEGORIZED
BY THE RADIUS OF CURVATURE ADOPTED
TO MAKE THE WELL HORIZONTAL. THEY
ARE ALSO CLASSIFIED BY BUILD UP RATES
WHICH IS INVERSELY PROPORTIONAL TO
THE RADIUS OF CURVATURE:
– LONG RADIUS
– MEDIUM RADIUS
– SHORT RADIUS
– ULTRA SHORT RADIUS
53
55. BUILDUP SECTION BETWEEN 1°- 6°/100’ OR RADIUS LENGTH BETWEEN
1000’-5000’
• ADVANTAGES:-
– EASIER AS CONVENTIONAL DOWNHOLE HARDWARE IS USED
– PDM MAY NOT BE REQUIRED
– LOWER DOG - LEG SEVERITY GIVES LESS TORQUE AND DRAG
– LONGER LATERAL SECTIONS(3500’ TO 5000’) (1000M TO 1500M)
– EXTENDED REACH FROM SURFACE LOCATIONS
– ACCOMMODATES FULL LOGGING ALL COMPLETION METHODS
STIMULATION WORKOVER AND GASLIFT EQUIPMENT.
• DISADVANTAGES:-
– LONG RADIUS NECESSITATES BIGGER RIG, TOP DRIVE, LARGER
PUMPS AND GREATER MUD MANAGEMENT CAPABILITIES
– LONGER OPEN HOLE SECTIONS INCREASE RISK OF PIPE
STICKING ,KICKS AND BOREHOLE DAMAGE
– LESS PRECISE CONTROL OVER T.V.D
– LITTLE USE IN SMALL LEASES BECAUSE OF LONG
DISPLACEMENTS.
Long Radius
55
57. • BUILDUP SECTION BETWEEN 8°-20°/100’ OR RADIUS LENGTH
BETWEEN 716’ TO 286’(218M TO 87M)
– ADVANTAGES:-
• SUPERIOR IN PRECISION COMPARED TO LONG RADIUS
• ACCOMMODATION OF NORMAL/SMALL SIZE M.W.D
TOOLS
• ABLE TO DRILL LONG HORIZONTAL SECTION UPTO 5000’
– DISADVANTAGES:-
• TORQUE AND DRAG HIGHER THAN LONG RADIUS
• LIMITATION IN COMPLETION AND WORKOVER
OPERATIONS
Medium Radius
57
59. • Buildup section between 1°-3.5°/1’ and radius
length between 57’ to 16’
– Advantages:-
• Precise vertical placement of horizontal drain
• KOP below fluid contacts results less risk of poor
isolation
– Disadvantages:-
• Requires customized drilling equipment
• No control over bore hole azimuth (within 20°)
• Limited to open hole completion
• No coring and logging services
Short Radius
59
63. DROPPING ROTARY ASSEMBLY
• Angle dropping principle is based on
pendulum principle
• Placing a stabilizer above the point of
tangency causes a reverse action and
the assembly becomes an angle
dropping assembly.
• The section of drill collars below the
stabilizer bends and sags downwards
due to pull of gravity, somewhat like the
action of a pendulum. so this assembly
is often called as pendulum assembly.
64. The stabilizer is normally placed 30’, 60’ or 90’
above the bit. As the distance increases, more
bend occurs and more drill collar weight forces
the bit to the lower side of the hole resulting in
increase of angle dropping rate.
Tentative guideline
30’: 0.25-.75°/100’
60’: 0.5-1.25°/100’
90’: 0.5-2.5°/100’
Variables for dropping rate
• Stiffer the drill collar, less the bending rate.
• More the drift angle in the well, greater the
dropping rate
• Higher the WOB, lesser the angle drop rate
• All the variables equal (drift angle, WOB etc.,
increase in rotary speed will result in increase in
angle drop.
The exact position of stabilizer depends on drill
collar size and weight, hole diameter, inclination
and WOB
The is adjusted with subs and pony drill collars
to increase or decrease the rate of drop
65. HOLDING ASSEMBLY:
• Packed hole assemblies are used when it is
necessary to keep angle and direction change to a
minimum
• In directional wells, packed hole assemblies are
used after the maximum drift angle is reached and it
is desired to maintain the angle.
• The stiff rigid assembly fits closely in the hole and is
held in place by multiple stabilizers.
• The stabilizers are normally placed at 0-10’-40’ or
0-10’-40-70’ above the bit.
• The rigidity and stiffness force the bha to remain in
the same relative position.
• Its efficiency increases by increasing stiffness and
rigidity
66. Given set of conditions determining hole size, d/collar size,
inclination, WOB, to lesser degree RPM , these two stabilizer
systems will have greater build tendency from 4 to 1.
67. Three stabilizer packed hole assemblies are designed to hold the bit on
course. These assemblies may build or drop gradually due to local conditions
and may be fine tuned by the use of under gauge stabilizers.