US20040211571A1 - Control line protector - Google Patents

Control line protector Download PDF

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Publication number
US20040211571A1
US20040211571A1 US10/778,774 US77877404A US2004211571A1 US 20040211571 A1 US20040211571 A1 US 20040211571A1 US 77877404 A US77877404 A US 77877404A US 2004211571 A1 US2004211571 A1 US 2004211571A1
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US
United States
Prior art keywords
control line
protector
receptacle
protecting
bare
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/778,774
Inventor
Oswaldo Moreira
Kevin Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baker Hughes Holdings LLC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US10/778,774 priority Critical patent/US20040211571A1/en
Assigned to BAKER HUGHES INCORPORATED reassignment BAKER HUGHES INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JONES, KEVIN R., MOREIRA, OSWALDO M.
Publication of US20040211571A1 publication Critical patent/US20040211571A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1042—Elastomer protector or centering means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1042—Elastomer protector or centering means
    • E21B17/105—Elastomer protector or centering means split type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/046—Flexible cables, conductors, or cords, e.g. trailing cables attached to objects sunk in bore holes, e.g. well drilling means, well pumps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/08—Flat or ribbon cables
    • H01B7/0869—Flat or ribbon cables comprising one or more armouring, tensile- or compression-resistant elements

Definitions

  • control lines have long been an important component of successful operations downhole. These may be hydraulic, electrical, fiber, etc. Control lines are needed to communicate with devices positioned downhole and therefore remote from a surface location at which personnel may be stationed.
  • TEC tubing encapsulated conductors
  • a flat pack is matrix of material, usually a polymer, into which is embedded a control line and cables for crush resistance.
  • the control line is completely encapsulated which is beneficial but the concept suffers in application due to the need at certain downhole tools to strip off the flat pack in order to pass the control line through the device.
  • a packer is one such device.
  • the result of a pass through is an exposed control line for a length which may be quite extended.
  • the exposed length of control line is subject to all stress factors. This has been avoided by using many splices in the line (i.e., no real feed-throughs, just breaks and splices at devices). There has been, however, no practical solution to the problem.
  • a control line protector including a matrix having at least one bumper and at least one receptacle.
  • a method for protecting a bare control line by positioning a protector having a matrix at least one bumper and at least one receptacle configured to accept the control line.
  • FIG. 1 is a cross-sectional representation of a first embodiment of a retrofit protector
  • FIG. 2 is a cross-sectional representation of a second embodiment of a retrofit protector
  • FIG. 3A is a cross-sectional representation of a third embodiment of a retrofit protector
  • FIG. 3B is an elevation view of the protector of FIG. 3A;
  • FIGS. 3C-3F are alternate elevation view like 3 B but with distinct constructions of the protector
  • FIG. 4 is a cross-sectional representation of a fourth embodiment of a retrofit protector.
  • FIG. 5 is a cross-sectional representation of a fifth embodiment of a retrofit protector.
  • the protector 10 comprises a matrix 12 , at least one bumper 14 and at least one receptacle 16 .
  • the matrix comprises a material capable of being formed to a configuration substantially as shown and holding that shape.
  • the matrix comprises a material that is resistant to vibration, abrasion, erosion, chemicals and mechanical compression or tension.
  • the material is polymeric.
  • Bumper(s) 14 comprise any relatively strong material having both tensile and compression resistant characteristics such as steel cable. Since flexibility is also desirable, stranded cable may be indicated for some embodiments.
  • the matrix and bumpers are similar but the receptacle 16 is distinct.
  • receptacle 16 a is configured to extend into a control area 20 of matrix 12 from one side 22 of protector 10 .
  • receptacle opening 24 is of a dimension smaller than a control line (not shown) to be housed in receptacle 16 a to a degree calculated to provide retention of the control line in receptacle 16 a while taking into account deformability of matrix 12 such that a control line is “snappable” into receptacle 16 a by hand or by suitable equipment, depending upon application.
  • a control line is “snappable” into receptacle 16 a by hand or by suitable equipment, depending upon application.
  • one embodiment employees a receptacle bore 26 of about 61 ⁇ 2 millimeters whereas the receptacle opening 24 a is about 4 millimeters wide.
  • receptacle 16 a is offset from a centerline of the protector 10 in the longer direction depicted. This position reduces insertion force of the control line and increases protection of the control line by enhancing crush resistance particularly from crushing against a casing or open bore wall of a wellbore in which the protector is run.
  • receptacle opening 24 b is provided with an angle to ease installation of a control line.
  • the angle is of about 5° to about 25° and reduces the force required to insert the control line into receptacle 16 b , while still requiring passage through a smaller dimension area calculated to retain the control line.
  • this system may be helpful in that it will tend to be more gentle on the control line.
  • FIG. 3 A third embodiment is illustrated in FIG. 3.
  • This embodiment provides closure of the receptacle opening discussed in the previous embodiments.
  • the embodiment of FIG. 3 includes a living hinge 30 on surface 32 .
  • Surface 32 as illustrated is shown continuous. This is because receptacle opening 24 c is configured to overlap itself when the protector 10 is in the closed position.
  • protector 10 In order to insert a control line in protector 10 , protector 10 is bent such that surface 32 becomes V-shape to open receptacle opening 24 c , thus allowing a control line to be installed into receptacle bore 26 .
  • Protector 10 is then bent back to straighten surface 32 , and close receptacle opening 24 c around the control line. In such configuration the control line is well protected 360° around the line.
  • FIG. 3B is provided which is taken on line 3 B- 3 B in FIG. 3A. Alternate overlapping structures visible on the 3 B view are illustrated in FIGS. 3C-3F.
  • receptacle 16 d is simply U-shaped and cut into surface 22 .
  • the retention of the control line may be provided by an adherent such as a thermo fixed glue or an epoxy formulation or other glue applied to the receptacle before or after installation of the control line.
  • a polymer or other type of stick tape is similarly employable. It is also contemplated that mechanical compression against the control line occasioned by the protector 10 being clamped to a tubular with the receptacle opening toward the tubular and the clamp positioned perimetrically around both to clamp the protector to the tubular.
  • the protector Due to the curved outside surface of the tubular, the protector is urged into an arcuate condition when considered in cross-section. Because of the arcuate condition the sides of the receptacle opening are urged toward each other effectively pinching the control line in place. It will also be appreciated that each of the foregoing methods for retention may be combined in whole or in part.
  • a receptacle 16 e is fully enclosed to both of side 22 and side 32 of protector 10 .
  • bore 26 e is in fact a closed bore through the center area of a matrix 12 .
  • the control line 26 is fed through receptacle bore 26 e from one end.

Abstract

Disclosed herein is a control line protector including a matrix having at least one bumper and at least one receptacle. Further disclosed herein is a method for protecting a bare control line by positioning a protector having a matrix at least one bumper and at least one receptacle configured to accept the control line.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application claims the benefit of an earlier filing date from U.S. Provisional Application Serial No. 60/464,818 filed Apr. 23, 2003, the entire disclosure of which is incorporated herein by reference.[0001]
    • BACKGROUND
  • In the hydrocarbon exploration and recovery arts, control lines have long been an important component of successful operations downhole. These may be hydraulic, electrical, fiber, etc. Control lines are needed to communicate with devices positioned downhole and therefore remote from a surface location at which personnel may be stationed. [0002]
  • Because of the harsh downhole conditions, including chemical and mechanical stress, among others, protection of control lines is desirable. [0003]
  • To this end, the industry has produced tubing encapsulated conductors (TEC) which configures an electrical or other conductor, inside a tube of usually {fraction (1/4)} inch diameter. TEC line is very effective but unfortunately still suffers from stresses in the downhole environment. [0004]
  • In order to improve longevity, the industry has created what is commercially known as a “flat pack”. A flat pack is matrix of material, usually a polymer, into which is embedded a control line and cables for crush resistance. The control line is completely encapsulated which is beneficial but the concept suffers in application due to the need at certain downhole tools to strip off the flat pack in order to pass the control line through the device. A packer is one such device. The result of a pass through is an exposed control line for a length which may be quite extended. The exposed length of control line is subject to all stress factors. This has been avoided by using many splices in the line (i.e., no real feed-throughs, just breaks and splices at devices). There has been, however, no practical solution to the problem. [0005]
    • SUMMARY
  • Disclosed herein is a control line protector including a matrix having at least one bumper and at least one receptacle. [0006]
  • Further disclosed herein is a method for protecting a bare control line by positioning a protector having a matrix at least one bumper and at least one receptacle configured to accept the control line.[0007]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Referring now to the drawings wherein like elements are numbered alike in the several figures: [0008]
  • FIG. 1 is a cross-sectional representation of a first embodiment of a retrofit protector; [0009]
  • FIG. 2 is a cross-sectional representation of a second embodiment of a retrofit protector; [0010]
  • FIG. 3A is a cross-sectional representation of a third embodiment of a retrofit protector; [0011]
  • FIG. 3B is an elevation view of the protector of FIG. 3A; [0012]
  • FIGS. 3C-3F are alternate elevation view like [0013] 3B but with distinct constructions of the protector;
  • FIG. 4 is a cross-sectional representation of a fourth embodiment of a retrofit protector; and [0014]
  • FIG. 5 is a cross-sectional representation of a fifth embodiment of a retrofit protector.[0015]
    • DETAILED DESCRIPTION
  • Referring to FIG. 1, a first embodiment of a retrofit protector is illustrated. The [0016] protector 10 comprises a matrix 12, at least one bumper 14 and at least one receptacle 16. The matrix comprises a material capable of being formed to a configuration substantially as shown and holding that shape. In addition the matrix comprises a material that is resistant to vibration, abrasion, erosion, chemicals and mechanical compression or tension. In one embodiment the material is polymeric. Bumper(s) 14 comprise any relatively strong material having both tensile and compression resistant characteristics such as steel cable. Since flexibility is also desirable, stranded cable may be indicated for some embodiments. In each of the embodiments illustrated the matrix and bumpers are similar but the receptacle 16 is distinct.
  • Still referring to FIG. 1, [0017] receptacle 16 a is configured to extend into a control area 20 of matrix 12 from one side 22 of protector 10. In this particular embodiment receptacle opening 24 is of a dimension smaller than a control line (not shown) to be housed in receptacle 16 a to a degree calculated to provide retention of the control line in receptacle 16 a while taking into account deformability of matrix 12 such that a control line is “snappable” into receptacle 16 a by hand or by suitable equipment, depending upon application. For example only, one embodiment employees a receptacle bore 26 of about 6½ millimeters whereas the receptacle opening 24 a is about 4 millimeters wide. It should be noted that in this and some of the embodiments discussed below, that receptacle 16 a is offset from a centerline of the protector 10 in the longer direction depicted. This position reduces insertion force of the control line and increases protection of the control line by enhancing crush resistance particularly from crushing against a casing or open bore wall of a wellbore in which the protector is run.
  • In a second embodiment, referring to FIG. 2, receptacle opening [0018] 24 b is provided with an angle to ease installation of a control line. The angle is of about 5° to about 25° and reduces the force required to insert the control line into receptacle 16 b, while still requiring passage through a smaller dimension area calculated to retain the control line. Depending upon the type of control line being inserted, this system may be helpful in that it will tend to be more gentle on the control line.
  • A third embodiment is illustrated in FIG. 3. This embodiment provides closure of the receptacle opening discussed in the previous embodiments. The embodiment of FIG. 3 includes a [0019] living hinge 30 on surface 32. Surface 32 as illustrated is shown continuous. This is because receptacle opening 24 c is configured to overlap itself when the protector 10 is in the closed position. In order to insert a control line in protector 10, protector 10 is bent such that surface 32 becomes V-shape to open receptacle opening 24 c, thus allowing a control line to be installed into receptacle bore 26. Protector 10 is then bent back to straighten surface 32, and close receptacle opening 24 c around the control line. In such configuration the control line is well protected 360° around the line. To illustrate the receptacle opening 24 c, FIG. 3B is provided which is taken on line 3B-3B in FIG. 3A. Alternate overlapping structures visible on the 3B view are illustrated in FIGS. 3C-3F.
  • Referring to FIG. 4, another embodiment of [0020] protector 10 is illustrated. In this embodiment receptacle 16 d is simply U-shaped and cut into surface 22. In this embodiment the retention of the control line may be provided by an adherent such as a thermo fixed glue or an epoxy formulation or other glue applied to the receptacle before or after installation of the control line. Alternatively a polymer or other type of stick tape is similarly employable. It is also contemplated that mechanical compression against the control line occasioned by the protector 10 being clamped to a tubular with the receptacle opening toward the tubular and the clamp positioned perimetrically around both to clamp the protector to the tubular. Due to the curved outside surface of the tubular, the protector is urged into an arcuate condition when considered in cross-section. Because of the arcuate condition the sides of the receptacle opening are urged toward each other effectively pinching the control line in place. It will also be appreciated that each of the foregoing methods for retention may be combined in whole or in part.
  • Finally, referring to FIG. 5, a [0021] receptacle 16 e is fully enclosed to both of side 22 and side 32 of protector 10. In this embodiment, bore 26 e is in fact a closed bore through the center area of a matrix 12. In this embodiment the control line 26 is fed through receptacle bore 26 e from one end.
  • In each of the embodiments illustrated herein a control line, which by prior art means would have to be left exposed in the wellbore, or could be protected by an excess number of splices can be effectively protected without the drawbacks inherent in the prior art. [0022]
  • While preferred embodiments of the invention have been shown and described, various modifications and substitutions may be made thereto without departing from the spirit and scope of the invention. Accordingly, it is to be understood that the present invention has been described by way of illustration and not limitation.[0023]

Claims (18)

What is claimed is:
1. A control line protector comprising:
a matrix;
at least one bumper; and
at least one receptacle dimensioned and configured to receive a separate control line.
2. A control line protector as claimed in claim 1 wherein said receptacle includes a receptacle opening.
3. A control line protector as claimed in claim 2 wherein said opening is of a dimension less than said receptacle.
4. A control line protector as claimed in claim 1 wherein said matrix includes a living hinge.
5. A control line protector as claimed in claim 4 wherein said receptacle includes a receptacle opening having an overlapping configuration when closed.
6. A control line protector as claimed in claim 1 wherein said receptacle is offset relative to a centerline of said matrix.
7. A control line protector as claimed in claim 1 wherein said matrix is polymeric.
8. A control line protector as claimed in claim 1 wherein said at least one bumper is a cable.
9. A control line protector as claimed in claim 1 wherein said receptacle includes an adherent.
10. A control line protector as claimed in claim 9 wherein said adherent is a thermo fixed flue, an epoxy formulation and combinations including at least one of the foregoing.
11. A method for protecting a bare control line comprising:
positioning the control line protector of claim 1 around an exposed control line.
12. A method for protecting a bare control line as claimed in claim 11 wherein said positioning is snapping said protector on said control line.
13. A method for protecting a bare control line as claimed in claim 11 wherein said positioning comprises:
bending said protector to open the receptacle opening;
inserting said control line in said protector; and
releasing said protector.
14. A method for protecting a bare control line as claimed in claim 13 wherein said releasing includes urging said protector in a direction to close the receptacle opening.
15. A method for protecting a bare control line as claimed in claim 11 wherein said positioning is feeding the control line into the receptacle in the protector.
16. A method for protecting a bare control line as claimed in claim 11 wherein said method further includes clamping said protector to a tubular structure.
17. A method for protecting a bare control line as claimed in claim 16 wherein said protector is oriented to position the receptacle opening adjacent the tubular structure.
18. A method for protecting a bare control line as claimed in claim 17 wherein said method includes pinching said control line in said receptacle.
US10/778,774 2003-04-23 2004-02-13 Control line protector Abandoned US20040211571A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/778,774 US20040211571A1 (en) 2003-04-23 2004-02-13 Control line protector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46481803P 2003-04-23 2003-04-23
US10/778,774 US20040211571A1 (en) 2003-04-23 2004-02-13 Control line protector

Publications (1)

Publication Number Publication Date
US20040211571A1 true US20040211571A1 (en) 2004-10-28

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US10/778,774 Abandoned US20040211571A1 (en) 2003-04-23 2004-02-13 Control line protector

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US (1) US20040211571A1 (en)
AU (1) AU2004232129A1 (en)
BR (1) BRPI0409697A (en)
CA (1) CA2523121A1 (en)
GB (1) GB0521763D0 (en)
NO (1) NO20054857L (en)
WO (1) WO2004095475A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9388645B2 (en) 2011-12-19 2016-07-12 Baker Hughes Incorporated Apparatus and method for reducing vibration in a borehole
CN106300192A (en) * 2016-09-23 2017-01-04 青岛智享专利技术开发有限公司 A kind of electric power solar powered electric pole electric wire anticollision device, collision-prevention device
WO2022076970A1 (en) * 2020-10-05 2022-04-14 Baker Hughes Oilfield Operations Llc Over element line protector and method

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US4042023A (en) * 1974-09-12 1977-08-16 Weatherford Oil Tool Co., Inc. Control line protector
US4061299A (en) * 1975-05-06 1977-12-06 Nifco Inc. Cord clamp
US4004326A (en) * 1975-12-22 1977-01-25 Borg-Warner Corporation Cable protector
US4600334A (en) * 1978-07-10 1986-07-15 Fenner America Inc. Mounting device without axial motion
US4262703A (en) * 1978-08-08 1981-04-21 Custom Cable Company Impact resistant control line
US4603737A (en) * 1985-08-29 1986-08-05 Spikes Hugh D Line protector
US4874908A (en) * 1987-07-08 1989-10-17 Minnesota Mining And Manufacturing Company Wiring harness
US4775121A (en) * 1987-07-20 1988-10-04 Carty James F Cable clamp
US4997148A (en) * 1988-12-20 1991-03-05 Zsi, Inc. Tubing clamp with hinged cushion
US5263671A (en) * 1991-06-11 1993-11-23 Emhart Inc. Holder for elongate articles
US5542472A (en) * 1993-10-25 1996-08-06 Camco International, Inc. Metal coiled tubing with signal transmitting passageway
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US5780773A (en) * 1996-03-12 1998-07-14 Wakamatsu; Toshio Cable supporting member
US6073891A (en) * 1998-01-12 2000-06-13 Ips Corporation Snap lock pipe mounting clamp
US6164604A (en) * 1998-02-03 2000-12-26 Oatey Co. Pipe clamps
US6147307A (en) * 1998-10-22 2000-11-14 Cooper Technologies Company Side insertion trap
US6283205B1 (en) * 2000-01-19 2001-09-04 James H. Cannon Polymeric centralizer
US20030019624A1 (en) * 2000-06-08 2003-01-30 Davis Emery W. Wire guard device for wells
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US6666415B2 (en) * 2000-12-01 2003-12-23 Kris Edward Hansen Method, system and apparatus for guiding and supporting an elongated flexible member
US6848510B2 (en) * 2001-01-16 2005-02-01 Schlumberger Technology Corporation Screen and method having a partial screen wrap
US20030056947A1 (en) * 2001-09-26 2003-03-27 Weatherford/Lamb, Inc. Profiled recess for instrumented expandable components

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9388645B2 (en) 2011-12-19 2016-07-12 Baker Hughes Incorporated Apparatus and method for reducing vibration in a borehole
CN106300192A (en) * 2016-09-23 2017-01-04 青岛智享专利技术开发有限公司 A kind of electric power solar powered electric pole electric wire anticollision device, collision-prevention device
WO2022076970A1 (en) * 2020-10-05 2022-04-14 Baker Hughes Oilfield Operations Llc Over element line protector and method
GB2614678A (en) * 2020-10-05 2023-07-12 Baker Hughes Oilfield Operations Llc Over element line protector and method

Also Published As

Publication number Publication date
NO20054857L (en) 2005-11-22
NO20054857D0 (en) 2005-10-20
AU2004232129A1 (en) 2004-11-04
BRPI0409697A (en) 2006-04-18
CA2523121A1 (en) 2004-11-04
WO2004095475A2 (en) 2004-11-04
GB0521763D0 (en) 2005-11-30
WO2004095475A3 (en) 2005-01-20

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