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basic Introduction drilling well completion

Geography Independent Summative Unit Grade 9
by

satria satria

on 22 February 2013

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Transcript of basic Introduction drilling well completion

What is common products / tools in Completion? Gas Lift Systems
Subsurface Flow Controls
Subsurface Safety Systems
Packers
Subsurface Slickline Tools
Liner Systems
Perforation System
Smart Completion System Basic Introduction Drilling Well Completion By : Syatria Putra Coil Tubing Single and Multizone.
Deep and Shallow
Pumping, flowing, and injection
Drillable and retrievable
High and Low pressure
Hot and Cold
Hydraulic, Mechanical, and Electric line set
Rugged and Routine Reliability of Closure, the most important function of a subsurface safety valve is its ability to close in a catastrophic situation
Economical Cost
Versatility / Deliverability
Additional Features What Is Well Completion Is the process of making a well ready for production (or injection). This principally involves preparing the bottom of the hole to the required specifications, running in the production tubing and its associated down hole tools as well as perforating and stimulating as required. Sometimes, the process of running in and cementing the casing is also included. Gas Lift System Aplications Production Potential
Increase Production of Flowing Wells
Unload Excess Fluids From Gas Wells
Going Deeper into the Issue How is it done? Subsurface Safety Equipment Two Methods: Onshore Offshore Well Casing Well Head What to Look Perforation Casing Gun Perforation
Through Tubing Perforation
Tubing Conveyed Perforation (TCP) Packers Oil spills harm the Arctic environment and disrupt the sensitive environment
When a oil spill does occur, it is harder for crews to acess as well as clean the spill itself
Drilling in the Arctic will not decrease dependence on the oil
Drilling involves the release of high amounts of pollutants Danke!! Subsurface Flow Control Systems Artificial Lift Method - Production Potential
- Gas / Oil Ratio
- Well bore Size
- Corrosion or Erosion Potential of Produced Fluids
- Availability of Power Sources
- Surface Facility or Space Limitation
- Service Availability
- Personal Capabilities Gas Lift Techniques Used To : > Designed to maintain production control for the life of the well
> Subsurface flow control equipment includes both tubular flow control equipment and production tool.
> Tubular flow control equipment is made up as part of the production tubing string and includes landing nipples, circulation / production sleeves, blast joints, and flow coupling
> Production Tool Equipment included lock mandrel, plugs, equalizing devices, flow regulators, tubing stop, packoffs, pressure and temperature gauge hanger, etc It is a safety system which may be used in an overall safety installation and work with wireline subsurface safety system OPERATIONAL CONSIDERTAIONS CATAGORIES <
Running, Setting, and tubing Space Out
Production and Treating
Retrieving Installing well casing is an important part of the drilling and completion process. Well casing consists of a series of metal tubes installed in the freshly drilled hole. Casing strengthens the sides of the well hole, ensures that no oil or natural gas seeps out of the well hole as it is brought to the surface, and keeps other fluids or gases from seeping into the formation through the well. A good deal of planning is necessary to ensure that the proper casing for each well is installed. The type of casing used depends on the subsurface characteristics of the well, including the diameter of the well and the pressures and temperatures experienced throughout the well. The diameter of the well hole depends on the size of the drill bit used. In most wells, the diameter of the well hole decreases the deeper it is drilled, leading to a type of conical shape that must be taken into account when installing casing.
There are five different types of well casing 1. Conductor Casing
2. Surface Casing
3. Intermediate Casing
4. Liner String
5. Production Casing The wellhead consists of the pieces of equipment mounted at the opening of the well to manage the extraction of hydrocarbons from the underground formation. It prevents leaking of oil or natural gas out of the well, and also prevents blowouts caused by high pressure. Formations that are under high pressure typically require wellheads that can withstand a great deal of upward pressure from the escaping gases and liquids. These wellheads must be able to withstand pressures of up to 20,000 pounds per square inch (psi)
Coiled Tubing: What do we do with it? Uncoiled into live oil and gas wells to perform maintenance operations
placement of chemicals
cleaning
manipulation of mechanical tools
milling / drilling
logging / perforating
A single zone completion using a hydraulic set retrievable packer is a simple,
very commonly used design.

Design Advantages Retrievable
Allows circulation above the packer
Packer may be set after well head installation
Flow may be controlled or shut off using the profile nipples and/or
sliding sleeve
Design allows for the installation & retrieval of recording devices
and flowing pressure / build up data acquisition.

Design Disadvantages
Suitable for low to medium pressure differentials only
Limited ability to handle tubing forces
Limited material selection

Additional Equipment
That Could Be Added
Flow couplings if required
Artificial lift equipment
Safety valve
A single zone completion using a high performance retrievable mechanical
double grip packer is a common completion design primarily used in single
zone gas well completions

Design Advantages
Retrievable
Allows circulation above the packer
Packer may be utilized as a bridge plug
Flow may be controlled or shut off using the profile nipples and/or
sliding sleeve
Design allows for the installation & retrieval of recording devices
Design is capable of handling medium high differential pressures
and high tubing forces

Design Disadvantages
limited material selection
Pressure handling capability of some sizes may be limited

Additional Equipment That Could Be Added
Flow couplings if required
Artificial lift equipment
Safety valve
TCP assembly
This is a common completion used in underbalanced perforating of single zone
wells.

Design Advantages
Retrievable
W/L setting allows exact depth control
Packer may be utilized as a bridge plug
Allows flow control using profile nipples
Design is capable of handling medium high differential pressures
and high tubing forces.

Design Disadvantages
Limited material selection
Pressure handling capabilities of some sizes may be limited

Additional Equipment
That Can Be Added
Flow couplings if required
Artificial lift equipment
Safety valve
Sliding sleeve
This is an example of a deeper single string gas well completion which allows
for tubing movement.
Design Advantages
Suitable for high pressure sour applications
Locator seal assembly can be spaced out to allow for anticipated
tubing movement
Mill out sub allows for one-trip removal of the packer and tail pipe
Design allows for pressure recorder installation in the tail pipe
Additional Equipment
That Can Be Added
Safety valve
Sliding sleeve above the seal assembly to allow circulation above
the packer
Chemical insection nipple or mandrel above the seal assembly This is a common completion type used in those wells where it is advantageous
to produce two zones simultaneously.
Design Advantages
All equipment is retrievable
Both zones can be produced independently and simultaneously
Packers may be set after the well head is installed
Sliding sleeve may be used to open communication between the
tubing strings
Additional Equipment
That Can Be Used
Sliding sleeves above the dual string packer
Well configurations in both tail pipe assemblies for recorders
Selective set packers
Gas lift equipment
Safety valves


This type of completion is commonly used in shallow low pressure sweet
natural gas wells in North America. Lower zone is produced up the tubing
string and upper zone up the annulus.
Design Advantages
Economical
Retrievable
Packer may be utilized as a bridge plug
Good flow control with profile nipples and sliding sleeve
Allows for installation and retrieval of recorders
Design Disadvantages
Suitable for shallow “sweet” completions only
Suspectable to fill problems from upper zone
Additional Equipment
That Can Be Used
Provision for rod pump, plunger lift or siphon tube This completion design allows the selective production of multiple zones up
one string of tubing.
Design Advantages

Allows control of each zone individually
Retrievable
Hydraulic packers may be set after installation of the well head
Design Disadvantages
Restricts production to one zone at a time
Limited material selection in packers
Limited ability to handle tubing forces
Additional Equipment
That Can Be Added

Sliding sleeve above top packer to allow circulation between the
annulus and tubing
Blast joints
Recorder provision below lower packer
Full transcript