W I L D W E L L C O N T R O L COILED TUBING

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Melvyn Porter
5 years ago
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1 COILED TUBING

2 Coiled Tubing Learning Objectives You will learn about types of coiled tubing rigs. You will learn best practices and techniques for conducting coiled tubing operations. You will learn the types of components for CT rigs, the tubing, strippers, rams, power packs, tools, controls, BOPs, and shear seal rams. You will learn how to handle common problems confronting coiled tubing operators.

3 Coiled Tubing Overview The use of long lengths of small diameter pipe allows wells to be worked over economically. Lengths are coiled onto large reels for moving, storage, and work. the time of conventional or workover units of similar capability. CT units can perform most operations required in normal workover and completion operations. CT units can rig up/down in a fraction of CT units can work on live wells.

4 Typical Coiled Tubing Rig Up HT400 Pump Suction Line Circulating Tank 10M Dual Choke Manifold Goosneck Rad. 94 Injector Head Injector Stand Iron Basket Hose Basket Tool Box Power Pack Return Line 2 Discharge Line THE Line 3-1/16 15M WP psi Riser 3-1/16 15M WP psi Blind Shear Ram Tree Connection 3-1/16 10M WP psi Wellhead Blind Cutters Pipe Slips 3-1/16 15M Pipe Ram 3-1/16 15M Gate Valve Reel w/ 1.5 CT 4000 ft. Operator s Cab

Full Bore Two-Way Valve New development of master valves subsea completions has led to the development of a full bore two-way sealing master valve.

5 Full Bore Two-Way Valve New development of master valves subsea completions has led to the development of a full bore two-way sealing master valve. Stripper assembly Quad BOP How are full bore two-way sealing valves used in workovers, completions, wireline, coiled tubing and snubbing? What advantages do they provide for the operator? They hold pressure from both directions. No need to install back pressure valves to pressure test the BOP stack in coiled tubing and snubbing. Flow Tee Pipe Ram Reiser pool Shear/Blind Full Bore Two Way Sealing Valve Well Head Valves

6 Coiled Tubing Applications Coiled tubing had few applications when first introduced because of tubing limits. Tubing improvements and innovations in downhole tools have greatly enhanced coiled tubing applications and services. Washing Sand and/or Fill Tubing Scale Removal Remedial Cementing Thru-Tubing Fishing

7 Washing Sand and/or Fill Packer Casing Tubing Coiled Tubing

8 Tubing Scale Removal Coil Tubing Casing Scale Removal Tool Tubing Packer

9 Remedial Cementing Packer Casing Tubing Coil Tubing Inflatable Packer

10 Thru-Tubing Fishing Shock Absorber Accelerator Jar Fishing Tool

11 Coiled Tubing Services include initiating well flow, pipeline and flowline cleaning, gas lift equipment services, shifting of sliding sleeves, BHP/BHT surveys, and services done by wireline. Other services include: Setting Inflatables Packers Drilling Composite Plugs Setting/Retrieving Bridge Plugs Reservoir Stimulation

12 Setting Inflatables Thru tubing straddlepack pack-off Tubing Casing Inflatable Straddlepack

13 Drilling Composite Plugs Drill Collars PDM PDC Drill Bit Bridge Plug

14 Setting/Retrieving Bridge Plugs Coil Tubing Setting Tool Bridge Plug

15 Reservoir Stimulation Tubing Packer Casing Coil Tubing Acidizing Head

16 Coiled Tubing Other Applications for coiled tubing: Siphon String Installation Coiled Tubing Completions Frac Packs Coiled Tubing Conveyed Formation Drilling Data Acquisition Coiled Tubing Perforating

17 Siphon String Installation Packer Casing Tubing Coiled Tubing Installed as a Siphon String

18 Coiled Tubing Completions Spoolable Completions Tubing Casing Coil Tubing Inflatable Packer

19 Frac Packs Diagram shows flowback to cleanup after a frac job. Gravel Pack Screen Liner

20 Coiled Tubing Perforating Stiff Wireline hidden inside Coil Tubing Stiff Wireline BPV TRT Perforating Guns Sump Packer

21 What the Coiled Tubing Can Do! W I L D W E L L C O N T R O L Kill a well by forward circulation. Pump nitrogen to bring well in. Clean out sand. Stiff wireline sets bridge plugs or perforates. Run DST s or production tests. Set straddle packers. Multiple trips in and out of well. Perform work without killing the well. Run spoolable completions. Run wireline operations: logs, surveys, etc. Dump or squeeze cement slurry Carry out drilling/milling operations.

22 Coiled Tubing Injection Head W I L D W E L L C O N T R O L

23 Coiled Tubing Injection Head

24 Coiled Tubing Injector Chains Linear Beams Hydraulic Cylinders Roller Chain Gripper Chain

25 Unsupported Column Length Coiled Tubing Buckling

26 Anti-Buckling Guide Anti-Bucking Guide

27 Gooseneck- Tubing Guide Arch Lifting Bail Rollers Tubing Guide Tubing Retainer Swivel Radius of tubing guide arch should be at least thirty times the specified OD of the coiled tubing.

The service reel, left photo, has a hydraulic swivel on front side;

28 Coiled Tubing Services Reel The Core radius should be at least twenty (20) times the specified coiled tubing diameter. The service reel, left photo, has a hydraulic swivel on front side; on rear side, some service reels have an electric swivel used with stiff wireline operations.

29 Coiled Tubing Services Reel Flange Diameter Core Diameter Turbine Counter Level Wind Assembly Reel Brake Drive System Reel Drive Motor Side View Front View

30 CT Service Reel & Hydraulic Motor

31 CT Service Reel & Level-Wind

32 Coiled Tubing Service Reel Counter

33 Fluid Swivel and High Pressure Connection

34 Swivel and High Pressure Connection

35 Coiled Tubing Damage, Fatigue, Failure Tubing degradation occurs when: Corrosive fluids, acids, are circulated through the tubing, or when the string is in a corrosive environment such as H 2 S or CO 2. Abrasive fluids, cement slurry or sand-laden fluid will erode the tubing on surface contact both inside and outside, and shorten its working life. Tension is the major stress factor once the coiled tubing is in the well. Buckling of CT strings occurs in highly deviated or horizontal wellbores.

36 Coiled Tubing Damage, Fatigue, Failure Tension is the major stress factor once the coiled tubing is in the well. Tension is the major stress factor once the coiled tubing is in the well. Tension, or hanging weight, occurs from the point of suspension, the chains, to the bottom of the string. The tension load is affected by: - Hole angle. - Buoyancy of the fluid into which the tubing is run. - External versus internal pressures. - Wellbore obstructions, stuck pipe, and drag. If tension load exceeds tensile strength of tubing, pipe will part, usually just below the injector, where the greatest tension load occurs. Excessive tension contributes greatly to a decrease in collapse resistance.

37 Coiled Tubing Damage, Fatigue, Failure Tubing degradation includes buckling. Buckling of CT strings occur in highly deviated or horizontal wellbores. String buckling starts when the natural radius of curvature is exceeded while the string is run in the hole. The radius of curvature is the natural string bend from being stored on a reel. In most coiled tubing sizes the radius of curvature is around 24 feet. With the string in tension the radius of curvature disappears as the string straightens. Completely relaxed tension loads allows the radius of curvature to be seen. With the lower part of the string in compression, as in a deviated or horizontal well, the radius of curvature can be exceeded and the string gives way to buckling.

38 Coiled Tubing Failures Field Coiled Tubing Failures Corrosion Field/Rig Damage Mfg Problem Wear Field Weld Temp

39 Coiled Tubing Failures Sinusoidal Buckling of Coiled Tubing The force required to push the tubing string into a deviated or horizontal well increases with the length of tubing introduced into the deviated section. When the force reaches a certain level the tubing string will snap into a sinusoidal configuration. The period and amplitude of the wave is dependent on the dimensions of the coiled tubing and the tubing into which it is being run.

40 Coiled Tubing Failures Helical Buckling of Coiled Tubing Increased length of tubing in the well leads to helical buckling. Once helical buckling takes place helical lockup is a real possibility. Helical lockup is where frictional forces by contact between the tubing ID and the coiled tubing OD exceed the pushing force. Now it is no longer possible to force any more coiled tubing into the deviated section of the well. More tubing can be further in at the surface resulting in a longer buckled section causing permanent damage or failure of the coiled tubing.

41 Coiled Tubing Failures Sinusoidal Buckling Helical Buckling

42 Coiled Tubing Failures Ovality is the degree to which the tubing is out of round. The percentage of ovality can be determined by taking random measurements of the tubing and performing the following simple equation: % Ovality = (Max OD Min OD) Design OD Using a machinist s caliper, measure the maximum and minimum diameter and plug the values the formula with the design diameter. The results yield a percentage of ovality. The smaller the percent ovality the better. A small degree in ovalitity can mean a decrease in performance and collapse.

43 Coiled Tubing Failures Notes on Ovality The easy place to measure is at the end of the tubing reel. If the tubing end is OK, there s no guarantee the entire reel is OK. Coiled tubing manufacturers never guarantee round tubing due to: - The extreme stress the steel is subjected to during manufacturing. - The steel is initially in a flat state, shaped into a circle and welded to form the tubing, and lastly, is spooled onto a reel. Stressing the steel in three dimensions will result in a reel of tubing that is not perfectly round in diameter. Many assume that coiled tubing has at least a 5% ovality factor.

44 Coiled Tubing Failures Injector Gripping Forces The injector damages CT when it grips and manipulates the CT. Two opposing continuous chains with single links have gripper blocks. The gripper diameters are sized per the coiled tubing used. The gripping force, or chain tension is adjustable. Slip Marks Injector Chain (repeating marks)

45 Coiled Tubing Failures Excessive forces in deep wells with severe hanging loads or misaligned chain blocks will cause pipe scaring and will greatly reduce the working life of the string. Hanging-off of the coiled tubing is done by means of slip rams. Slip rams have two opposing pieces that make contact with the pipe. Pipe scarring takes place when hanging-off. This promotes corrosion, and also weakens the pipe and shortens its effective life. Slip Marks Injector Chain (repeating marks)

46 Coiled Tubing Failures Three types of Cracks occur in a string of coiled tubing. They are first noticed as pinholes in the tubing string. Without immediate attention they can develop into cracks that will lead to failure of the string. The three kinds of cracks are shown in this illustration: Transverse Crack Longitudinal Crack Angled Crack

47 Coiled Tubing Failures Pitting of the tubing is usually associated with localized corrosion which can occur both internally and externally. External pitting is caused by direct contact with corrosive wellbore or treatment fluids, atmospheric corrosion or can be a combination of both. External Weld Bead Internal

48 Coiled Tubing Failures Internal pitting is directly related to contact with improperly inhibited treatment fluids or failure to flush the coiled tubing following the use of a corrosive fluid. The weld bead is an electrolytic corrosive metallic cell. External Weld Bead Internal

49 Coiled Tubing Failures Slip Marks Injector Chain (repeating marks) External Weld Bead Internal Transverse Crack Longitudinal Crack Angled Crack

50 Cyclic Stress Reversals While Running Coiled Tubing Damage because of the bending cycle

Strain Bending Events During Coiled Tubing Operations One Trip in/out 1 6 2 3 4 5

51 Strain Bending Events During Coiled Tubing Operations One Trip in/out In Out Time Bending Events 2 & Bending Events 2 & 5 3 Bending Events 1 & 6 1 6

52 Pitting & Tensile Overloading Produce MOST Of The Coiled Tubing Failures Fatigue - 13 Pitting - 26 Corrosion - 8 H2S Stress - 13 Tension - 24 Hel. Buck. - 5 Mech. Damage - 3 Welds - 8

53 Coiled Tubing Failures Abrasion decreases wall thickness and string performance. Round dents have little effect on string strength; but sharp scratches and gouges cause string corrosion. Localized abrasions are from direct contact with wellbore tubulars and associated with sinusoidal or helical buckling.

54 Coiled Tubing Failures Longitudinal scratches are the result of contact with sharp edges in the wellbore, BOPs, or the coiled tubing handling and spooling equipment. Round Dents Localized Abrasions Longitudinal Scratch

55 Coiled Tubing Failures Other sources of damage: Careless handling and inadequate maintenance. Operations that present hazards to the tubing: - Spooling and unspooling. - Loading and offloading. - Handling on location. A coiled tubing string allowed to become encrusted with rust will surely fail before one which is better maintained.

56 Coiled Tubing Failures Ballooning and necking cause problems with handling equipment in the injector and chains, and with the pressure control equipment such as the stripper and BOPs. Additionally, tubing performance (especially tensile and collapse) and tubing life can be affected. Balooning Necking Ovality

57 Coiled Tubing Failures Necking is due to over-stressing a section of the string via tension loading. Ballooning results from cycling the tubing under pressure. Balooning Necking Ovality

58 Coiled Tubing - Conventional Stripper Strippers are primary barriers to wellhead pressure. The packing stack must be accessed from above. The energizing stripper applies pressure to lower bushing and compresses packing in an upward direction. Energizing stripper is called packing. When packed, wellbore pressure assists closing. Availability: 5M and 10M psi. WP Packing Arrangement Mounting Flange Hydraulic Pack and Retract Mechanism Stripper Connection to Tandem Stripper, BOP or Lubricator Conventional Stripper

59 Coiled Tubing - Tandem Stripper The Tandem Stripper is used in conjunction with a stripper as a backup in case of wear or failure. Tandem Stripper

Conventional Packing Arrangement Inserts may be urethane,

Designs have three components: Energizer Packer insert

60 Conventional Packing Arrangement Inserts may be urethane, nitrile, or viton elastomer depending on service requirements. Split inserts are replaceable with coiled tubing in place. Designs have three components: Energizer Packer insert Non-extrusion ring Top Busing and Retaining Pins Non-Extrusion Ring Packing Insert Stripper Energizer Lower Bushing Packing Element

Coiled Tubing - Side Door Strippers The Side Door Stripper provides easier access to the packing element through the side door. Eliminates accessing the stripper from above.

61 Coiled Tubing - Side Door Strippers The Side Door Stripper provides easier access to the packing element through the side door. Eliminates accessing the stripper from above. The side door stripper is available in two models. Hydraulic Pack and Retract Mechanism Mounting Flange Side Door Packing Arrangement Bottom Connector Side Door Stripper with Downward Acting Hydraulics Side Door Stripper with Upward Acting Hydraulics

62 Coiled Tubing Side Door Strippers Hydraulic Cylinder Unit w/ Doors Closed Securing Flange for Injector Head Body Side Door Locking Bolt Locking Doors Annulus Ports Body Side Door Quick Union Bushing Sleeve Hydraulic to Energize Unit w/ One Door Open Hydraulic to Pumpup Cylinder Packer Cylinder Sleeve Packing M Seals Coil Tubing Lower Bushing Unit w/ Both Doors Open Cylinder Sleeve Exposed Unit w/ Piston at Top of Stroke - One Packing in Place & Coil Tubing

Packing elements fully retracted to clear oversized or

63 Coiled Tubing - Radial Stripper Single piece body has few leak paths. Packer is accessible from the side. Packing elements fully retracted to clear oversized or upset tools Actuated radially. Stripper height is reduced.

packer because it has two packing elements that can be

64 Coiled Tubing Over-Under Tandem Stripper W I L D W E L L C O N T R O L Industry recommends the use of a tandem stripper packer because it has two packing elements that can be activated individually. The life of the sealing elements is extended.

65 Coiled Tubing - Quad BOP BOP s are secondary barriers in coiled tubing operations. Quad BOPs are arranged in this order (API RP 5C7) starting from top : blind ram, shear ram, slip ram then pipe ram. Kill Port Blind Rams Shear Rams Slip Rams Pipe Rams

66 Coiled Tubing - Quad BOP Equalizing ports are used to avoid opening blind rams or pipe rams under differential pressure. Rams are not designed to close when tubing is moving. The kill port allows pumping down annulus or down tubing after shearing. Kill Port Blind Rams Shear Rams Slip Rams Pipe Rams

67 Coiled Tubing - Combination BOP Combi BOP s have two main advantages over single function BOPs: less height and fewer steps for emergency shut-in procedures. Most combination rams are designed to have wellbore pressure assist. They should not be opened until differential pressure is equalized. Blind/Shear Rams Pipe/Slip Rams Kill Port Combi BOP

68 Kill Port BOPs have a 2 OD kill nipple between the slip rams and shear rams. This enables the kill fluid to be pumped down the sheared tubing during emergency operations (and when pressure testing). Never use the kill port as a circulation line. Blind/Shear Rams Pipe/Slip Rams Kill Port Combi BOP

69 Coiled Tubing - Shear Seal BOP Shear/seal rams are tertiary barriers provide emergency shearing capability. The shear blades are designed for minimum deformation to the tubing so kill fluid can be pumped through the suspended coiled tubing after the cut. Shear/Seal BOP

70 BOP Closing and Equalizing Components The hydraulic actuator is used to open and close the rams. The hand wheel can be used to close only and also serves as ram lock. The weep hole and vent are used for detection and prevention of communication between the wellbore and hydraulic system. Equalizing Valve Assembly BOP Hydraulic Actuator

71 BOP Closing and Equalizing Components The ram position indicator provides a visual indication of ram travel and position. An equalizing valve, left, is used to balance pressure across closed pipe, blind or combi rams before opening. The equalizing valve must be left in closed position during normal operations. Equalizing Valve Assembly BOP Hydraulic Actuator

72 BOP Closing and Components HYDRAULIC PASSAGES DRILLED THROUGH BONNET ADAPTER RETAINER SET SCREW & WOODRUFF KEY CLOSING TUBE ELBOW HEX RETAINER INDICATOR ACTUATOR ROD BONNET SEAL SEAL PISTON GUIDE PISTON RETAINER ROD NUT PISTON CYLINDER KEY SLEEVE NUT HYDRAULIC CAP STEM RETAINER BEARING ASSEMBLY

73 Coiled Tubing - Flow Cross

74 Quad BOP Ram Assemblies Shear rams are used to cut the coiled tubing in emergency situations, and serve as a tertiary barrier. The shear ram blades minimize tubing deformation this allows an opening to pump kill fluids. Ram Body Retainer Screw Shear Blade Shear Blade (inverted) Shear Ram Assembly

75 Quad BOP Ram Assemblies The blades are case hardened with softer inner cores to resist sulfide stress cracking. Blind rams seal the wellbore when no tubing is across them. Blind rams must be equalized before opening. Ram Body Seal Ram Body Retainer Bar Ram Seal Blind Ram Assembly

Quad BOP Ram Assemblies Slip rams used to close and hold tubing in place, are bi-directional. Slips hold coiled tubing in place against upward and downward forces.

76 Quad BOP Ram Assemblies Slip rams used to close and hold tubing in place, are bi-directional. Slips hold coiled tubing in place against upward and downward forces. Replaceable slip inserts are machined to fit one size tubing only. Pipe rams seal around tubing. Pipe rams are wellbore pressure assisted. Pressure across them must be equalized before opening. Ram Body Slip Insert Retainer Pin Slip Ram Assembly

77 Combi BOP Ram Assembles Shear/seal rams are designed to cut tubing and seal the wellbore following the shear. Ram Body Seal Rams should be used only when it is not necessary for tubing to fall after cutting. They must be equalized before opening. Shear/Seal Blade Ram Body Retainer Bar Shear/Seal Blade (inverted) Shear/Seal Ram Assembly

78 Combi BOP Ram Assembles Pipe/slip rams are used to seal the wellbore and to secure the tubing in place. Rams are wellbore pressure assisted. Pressure across them must be equalized before opening. Ram Seal Push Rod Slip Insert Pipe Ram Push Rod Ram Body Pipe/Slip Ram Assembly

79 Power Pack Power pack supplies the hydraulic fluid to operate the coiled tubing unit including the injector and the BOPs. Power packs include a diesel engine to power hydraulic pumps. The system is regulated to a maximum pressure based on the job and wellhead pressure.

80 Power Pack Accumulators to power BOPs installed on the control cabin skid, used if a hydraulic power failure or if hydraulic fluid is not enough to run the BOPs. Accumulator contains a useable volume greater than is required to fully operate the BOPs and all associated valves.

81 Power Pack Marine Design

82 Coiled Tubing Control Console The control cab contains the control console which regulates every function of the coiled tubing unit.

83 Coiled Tubing Control Console The cab is lined up behind reel, in line with the wellhead. Some control cabs mounted on a hydraulic scissor lift so operator has clear view of the wellhead. It is advisable/mandatory that an ESD valve be installed in the control cab in case of emergency.

84 Coiled Tubing Console Control Well Control Stack Pressure Control Strippre Pressure Gauge Injector Pressure Control Reel Pressure Control Injector Speed (Hi Lo) Well Control Stack Pressure Stripper Pressure Control Injector Hydraulic Pressure Reel Hydraulic Pressure Injector Chain Traction Pressure Pumped Fluid Circulation Pressure Well Control Stag Ram Valves Injector Brake Injector Control Load Indicator Emg. Kill Switches Reel Controls Engine Throttle Wellhead Pressure

85 Coiled Tubing Hydraulic Controls Stripper systems are usually dual acting. Able to pack and retract hydraulically. Stripper hydraulic system pressure should be compatible with rating of stripper. Most capable of 5000 psi. All items MUST be Function tested after initial installation to ensure the correct connections made. NEUTRAL RETRACT PACK STRIPPER #1 STRIPPER #2 STRIPPER SYSTEM PRESSURE 5000 PSI MAX STRIPPER PRESSURE ADJUST AND REGULATOR CONTROL NEUTRAL RETRACT PACK Stripper Controls and Instrumentation

86 Coiled Tubing Hydraulic Controls BOP systems usually require at least two (2) controls be shifted to actuate a ram to prevent accidental operation. Hydraulic systems are equipped with an accumulator to allow several BOP operations without benefit of CTU power pack. SHEAR RAM CLOSE OPEN CLOSE SLIP RAM CLOSE OPEN BLIND RAM CLOSE OPEN PIPE RAM CLOSE OPEN ON OFF BOP PRESSURE BOP SUPPLY BOP SUPPLY PRESSURE BOP Controls and Instrumentation

87 Coiled Tubing Dimple Connector Coiled Tubing Set Screw O-Ring

88 Coiled Tubing Grapple Connector Coiled Tubing Set Screw Grapple O-Ring

Coiled Tubing C.A.R.S.A.C. The combination anti-rotation self aligning connector (C.A.R.S.A.C.) is designed to assist with the tubing make-up where it is difficult to rotate the tools to engage threads.

89 Coiled Tubing C.A.R.S.A.C. The combination anti-rotation self aligning connector (C.A.R.S.A.C.) is designed to assist with the tubing make-up where it is difficult to rotate the tools to engage threads. This tools allows a high degree of torque to be transmitted through it. This is achieved by the combination of a locking taper (which permits easy stabbing) and a self aligning anti-rotation connector.

special crimping tool. Pressure sealing is accomplished via the o-ring.

90 Standard Coiled Tubing Tools The roll on connector is attached to the inside diameter of the coiled tubing being held in place by crimping the coiled tubing around the profile of the connector by a special crimping tool. Pressure sealing is accomplished via the o-ring. This connector contributes to higher circulating pressures due to the internal restriction. O-Ring Crimped Coiled Tubing Roll On Connector

91 Standard Coiled Tubing Tools The ball and seat check valve is designed to allow pumping to be accomplished past the ball but prevents flow up the coiled tubing. Top Connection Ball and Seat Bottom Connection W I L D W E L L C O N T R O L Ball and Seat Check Valve

Results in lower pump pressures due to the greater useable diameter of the flapper check.

92 Standard Coiled Tubing Tools The flapper type check valve allows for pumping through the string of coiled tubing but disallows back flow through the tubing. Results in lower pump pressures due to the greater useable diameter of the flapper check. The flapper valve is the preferred type of BPV for CT operators. Top Connection Flapper and Seat Bottom Connection Single Flapper Dual Flapper

93 Jetting and Circulating Subs Jetting subs and nozzles come in many designs and sizes based on the job at hand. Where return volume is the main concern, use a large port sub as shown in the top and middle diagrams. If turbulence at the sub is needed, the lower sub would be used. Single Jetting Sub Muleshoe Jetting Sub Multi-Angle Jetting Sub

94 Jetting and Circulating Subs Upper Sub The release joint allows the coiled tubing to be disengaged from the bottom hole assembly. The types of release subs are: Pressure activated Tension activated Combination pressure/tension The pressure activated sub uses a ball pumped through the string and lands in the sub to seal. Ball and Seat Collet Spring W I L D W E L L C O N T R O L Release Joint

95 Jetting and Circulating Subs Upper Sub Pump pressure then overcomes the friction bite of a collet and the string becomes free. The tension activated release joint relies on shear pins which must be failed for the string to become free of the bottom hole assembly. A fishing neck looking up allows the string to be reconnected with the appropriate fishing tool. Ball and Seat Collet Spring W I L D W E L L C O N T R O L Release Joint

96 Coiled Tubing Logging

97 Horizontal Cable Installation Requirements: Long Straight Location Wireline Unit Coiled Tubing Unit Pumping Equipment High Pressure Flow Lateral CT Connector Lubricator Wireline Crossover Pig

98 Stiff Wire Line for Coil Tubing Wireline Pressure Bulkhead CT to Inner Wrap on Reel Wire Line Collector Electric Line to Collector on other CT axle CT Reel Isolation Valve CT Reel Rotating Swivel Reel Axle

99 CT - Vertical Cable Installation Requirements: Cool Well Wireline Unit CT Unit Coiled Tubing Wireline Wellbore Bullnose

100 Coiled Tubing Bottom Hole Connector Coiled Tubing CT Connector Swivel Cable Clamp Electrical & Pressure Bulkhead PEH-E PEH-A PEH-AB Head Flow Check Valve Standard Rope Socket Config.

101 Stiff Wireline Perforating The perforating gun is run below the packer with the coiled tubing.

102 Stiff Wireline Perforating Locates the interval to be perforated.

103 Stiff Wireline Perforating Gun is fired by electrical current.

104 Stiff Wireline Perforating Well bore is charged from the perforations by 5000 psi formation pressure.

105 Stiff Wireline Perforating Pressure from the formation returns and travels downwards and upwards.

106 Stiff Wireline Perforating Forces then rebound. Now calculate the force underneath the packer.

107 Stiff Wireline Perforating Force = (ID, ins) 2 x x Pressure, psi = (6.25) 2 x x 5,000 = 153,398 pounds force Plus 50,000 pounds shock force (from firing perforating tool) Total Force = 153, ,000 = 203,398 lbs

108 Stiff Wireline Perforating Force travels up: Corkscrews tailpipe Bursts casing at packer seal

109 Stiff Wireline Perforating Tubing is: Corkscrewed Packer is unseated, and blown up hole

110 Coiled Tubing Drilling CT Unit on Location and Drilling Ahead

111 Coiled Tubing Drilling BOP Stack

112 BHA for Milling Coiled Tubing CT Connector Dual BP Valve Hydraulic Disconnect Dual Circulating Sub Titan Motor Carbide Mill

113 Milling on Bridge Plug Coiled Tubing CT Connector Dual BP Valve Hydraulic Disconnect Dual Circulating Sub Titan Motor Carbide Mill Bridge Plug

114 Coiled Tubing Down Hole Motor The Titan Downhole CT Motor: Motor designed in response to current limitations found in CT motors. Rugged motor with very high performance. Motor has nonroller/ non-ball, lubricated bearing pack. Titan motor allows for very high jar loading. No traditional bearings to damage by impact. Strength enhancements in the drive shaft. Allows for greater side loading at the bit box. Titan Motor

115 Coiled Tubing PDC Bits and Mills PDC Bits and Mills

116 Coiled Tubing Mill and PDC Bit Mill and PDC Bit

117 Coiled Tubing Dual Circulation Sub The CT dual circulation sub provides a way to circulate the annulus when activated. The sub also has a rupture disc included. This sub may be used if no other way to circulate can be found.

118 Fishing Tools W I L D W E L L C O N T R O L Flow Activated HD Running/Pulling Tool GS Type Pulling/Retrieving Tool With J-mechanism

119 Fishing Tools Overshot Spear

120 Fishing Tools Shown activated >> Shifting Tool

121 Fishing Tools Accelerators Jars

Injection Port ½ NPT Monitor or Chemical Injection Port Upper

122 Wireline Guide for Coiled Tubing WL Guide For 1.25 CT Slip Actuation Pin ½ NPT Grease Injection Port ½ Hyd. Injection Port ½ NPT Monitor or Chemical Injection Port Upper Interference Seal Ass. Slip & Bowl Assembly Lower Interference Seal Assy. Valve Removal Plug Preparation

123 Coiled Tubing Tubing-Hanger

124 Coiled Tubing Packoff Installed

125 Spoolable Completion CT Gas Lift Installation 7-5/8 Casing 2-7/8 Tubing 1 OD Gas Lift Valves Coiled Tubing Landing Nipple

126 Spoolable-Completion Extension 7-5/8 Casing 2-7/8 Tubing Safety Valve Hanger Packer 1 OD Gas Lift Valves Coiled Tubing Landing Nipple Lower Sand

127 CT Gas Lift Mandrel with Connectors

128 Coiled Tubing Choke Manifold

129 Coiled Tubing Choke Manifold

130 Coiled Tubing Access Window SDDT MALE QUICK STAB CONNECTOR GUIDE TOOL

Coiled Tubing Learning Objectives You learned about types of coiled tubing rigs. You learned best practices and techniques for conducting coiled tubing operations.

131 Coiled Tubing Learning Objectives You learned about types of coiled tubing rigs. You learned best practices and techniques for conducting coiled tubing operations. You learned the types of components for CT rigs, the tubing, strippers, rams, power packs, tools, controls, BOPs, and shear seal rams. You learned how to handle common problems confronting coiled tubing operators.

Intervention Barriers

Intervention Barriers A barrier is defined as a means of containing wellbore pressure and fluids. Two effective barriers are required for most intervention operations. Consider when barriers are effective