Coiled Tubing Module 1
Section
Title
Page Number

1

THE COILED TUBING WELL INTERVENTION METHOD

1-1

1.1

DESCRIPTION OF THE COILED TUBING SERVICE

1-1

1.2

THE COILED TUBING UNIT

1-1

1.2.1

Power Pack

1-3

1.2.2

Control Cabin

1-5

1.2.3

Reel

1-8

1.2.4

Injector Head

1-10

1.3

GOOSE NECK

1-15

     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
Section
Title
Page Number

2

PLANNING AND SAFETY

1-1

2.1

PRE-JOB PLANNING

2-1

2.2

OPERATIONAL CONSIDERATIONS

2-1

2.2.1

Gas Wells

2-1

2.2.2

High Wellhead Pressures

2-1

2.2.3

Toolstring Lengths

2-1

2.2.4

Long BHA Deployments

2-1

2.2.5

Deployment Considerations

2-1

2.2.6

Rig Floor Equipment

2-2

2.3

COILED TUBING EQUIPMENT CONSIDERATIONS

2-2

2.3.1

Well Control Equipment

2-2

2.3.2

Control Hoses

2-2

2.3.3

Support Stand

2-3

2.3.4

Tie-Back Points

2-3

2.4

SAFETY CONSIDERATIONS

2-3

2.4.1

General Safety Considerations

2-3

2.4.2

Well Control Considerations

2-4

2.4.3

Coiled Tubing Considerations

2-5

2.5

RUNNING AND PULLING PROCEDURES

2-5

2.5.1

Procedure

2-5

2.5.2

Running/Pulling Procedural Guidelines

2-7

2.6

EMERGENCY PROCEDURES

2-8

2.6.1

Platform Shutdown

2-8

2.6.2

Stripper/Packer Element Leak

2-8

2.6.3

Leak Between Tree And BOPs

2-8

2.6.4

Tubing Pinhole Leak

2-9

2.6.5

Tubing Rupture

2-9

2.6.6

Tubing Separates Downhole

2-9

Section
Title
Page Number

3

PRESSURE CONTROL EQUIPMENT

3-1

3.1

STRIPPER/PACKER

3-1

3.1.1

Conventional Stripper

3-2

3.1.2

Side Door Stripper

3-2

3.1.3

Radial Stripper

3-2

3.2

BOP

3-7

3.3

SHEAR/SEAL

3-11

3.4

PRESSURE CONTROL STACK-UP ARRANGEMENTS

3-13

     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
Section
Title
Page Number

4

DOWNHOLE TOOL SELECTION

4-1

4.1

END CONNECTOR

4-1

4.1.1

Roll-On End Connector

4-1

4.1.2

Roll-On Double End Connector

4-1

4.1.3

Crimping Tool

4-3

4.1.4

Dimple Connector

4-4

4.1.5

External Slip Connector

4-5

4.1.6

Electric Wireline Connector

4-6

4.2

CHECK VALVES

4-7

4.2.1

Ball Check Valve

4-7

4.2.2

Dart Check Valve

4-8

4.2.3

Flapper Check Valve

4-9

4.2.4

Spring Return Check Valve

4-10

4.3

PRESSURE RETAINING CHECK VALVE

4-11

4.4

RELEASE JOINTS

4-12

4.4.1

Pressure Activated Release Joint

4-13

4.4.2

Tension Activated Release Joint

4-14

4.5

ANCILLIARY TOOLING

4-15

4.6

TOOLSTRING CONFIGURATION

4-21

4.6.1

Operation

4-21

4.6.2

Limitations of Toolstring

4-21

4.6.3

Wellbore Restrictions

4-21

4.6.4

Wellbore Deviations/Severe Doglegs/Horizontal Sections

4-21

4.6.5

Wellbore Fluids

4-21

     
Section
Title
Page Number

5

COILED PIPE

5-1

5.1

COILED PIPE MANUFACTURERS

5-1

5.2

TUBING MANUFACTURING HISTORY

5-2

5.3

TUBING MATERIALS

5-3

5.4

MANUFACTURING PROCESS

5-4

5.4.1

Standard Tube-to-Tube Weld

5-4

5.4.2

Continuous Milled Coil Tubing

5-5

5.4.3

Tubing Forming Rollers

5-7

5.4.4

Tapered String Welding

5-8

5.5

COILED TUBING APPLICATIONS

5-9

5.5.1

Workover and Drilling Services

5-9

5.5.2

Completions

5-9

5.5.3

Flowlines

5-9

5.6

FUTURE PIPE DEVELOPMENTS

5-9

5.6.1

High Strength Materials

5-9

5.6.2

Composite Materials

5-10

5.7

COILED TUBING LIMITATIONS

5-10

5.8

TUBING LIFE LIMITS

5-11

5.8.1

Fatigue Due To Bending And Pressure

5-12

5.8.2

Pressure And Tension Limits

5-16

5.8.3

Diameter And Ovality Limits

5-18

5.8.4

Coiled Tubing Buckling And Lockup

5-18

5.8.5

Coiled Tubing Forces Model Parameters

5-19

Section
Title
Page Number

6

COMPUTER SIMULATION AND MONITORING

6-1

6.1

SOFTWARE TECHNOLOGY

6-1

6.1.1

Model Features Of BUCKLE

6-1

6.1.2

Model Features Of CDRAG

6-2

6.1.3

Model Features Of CSTRESS

6-2

6.1.4

Model Features Of TRIAX1

6-4

6.1.5

Model Features Of CEMENT

6-4

6.1.6

Model Features Of HYDMOD

6-5

6.1.7

Model Features Of PROMOD

6-5

6.1.8

Model Features Of WELCON

6-6

6.2

DATA ACQUISITION SYSTEMS

6-7

     
     
     
     
     
     
     
     
     
     
     
     
Section
Title
Page Number

7

COILED TUBING APPLICATIONS

7-1

7.1

GAS LIFTING

7-1

7.1.1

Equipment Required

7-2

7.1.2

Downhole Tools

7-2

7.2

SAND CLEANOUT

7-6

7.2.1

Sand Clean-out

7-6

7.2.2

Equipment

7-7

7.2.3

Downhole Tools

7-7

7.3

ACID SPOTTING

7-11

7.3.1

Acid Washing

7-11

7.3.2

Equipment

7-11

7.3.3

Downhole Tools

7-11

7.4

CEMENTING

7-16

7.4.1

Cementing

7-16

7.4.2

Equipment

7-16

7.4.3

Downhole Tools

7-16

7.5

MILLING AND UNDER-REAMING

7-24

7.5.1

Milling and Under-Reaming

7-24

7.5.2

Equipment

7-24

7.5.3

Downhole Tools

7-24

     
     
     
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