WO2001038687A2 - Pipe connecting method - Google Patents

Pipe connecting method Download PDF

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Publication number
WO2001038687A2
WO2001038687A2 PCT/EP2000/011994 EP0011994W WO0138687A2 WO 2001038687 A2 WO2001038687 A2 WO 2001038687A2 EP 0011994 W EP0011994 W EP 0011994W WO 0138687 A2 WO0138687 A2 WO 0138687A2
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
sleeve
end part
memory alloy
shape
Prior art date
Application number
PCT/EP2000/011994
Other languages
French (fr)
Other versions
WO2001038687A3 (en
Inventor
Wilhelmus Hubertus Paulus Maria Heijnen
Original Assignee
Shell Internationale Research Maatschappij B.V.
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 Shell Internationale Research Maatschappij B.V. filed Critical Shell Internationale Research Maatschappij B.V.
Priority to EP00993181A priority Critical patent/EP1234090B1/en
Publication of WO2001038687A2 publication Critical patent/WO2001038687A2/en
Publication of WO2001038687A3 publication Critical patent/WO2001038687A3/en
Priority to NO20022510A priority patent/NO326362B1/en

Links

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
    • E21B17/02—Couplings; joints
    • E21B17/08—Casing joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/042—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using explosives
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • E21B43/105—Expanding tools specially adapted therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure
    • Y10T29/49806—Explosively shaping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49865—Assembling or joining with prestressing of part by temperature differential [e.g., shrink fit]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/4994—Radially expanding internal tube

Definitions

  • the present invention relates to a method of connecting pipes.
  • These pipes can be sections of a pipeline or well tubulars that are used in a well for producing hydrocarbons from an underground reservoir.
  • the method is used in connection with interconnecting casing strings or liners.
  • the casing string is a string of steel pipe sections that is used to line a borehole extending through an underground formation, and that is secured to the formation by means of cement.
  • the outer diameter of the next casing string has to be smaller than the inner diameter of the preceding casing string.
  • the next casing string may also be a so-called liner.
  • the expression 'casing string' will also be used to refer to a liner.
  • these techniques do not allow expanding the connection where the next casing string is hung off from the previous casing string.
  • a method of connecting a first pipe to a second pipe having an end part fitting into an end part of the first pipe comprising a) arranging the end part of the second pipe within the end part of the first pipe; b) arranging a sleeve of a deformable material between said end parts; and c) radially expanding the end part of the second pipe towards the end part of the first pipe so as to bias the sleeve between said end parts.
  • the sleeve can for example be made of a hard elastomer or a ductile metal, however it is preferred that the sleeve is made of a shape-memory alloy so that the sleeve is expandable upon heating of the sleeve to the transition temperature of the shape-memory alloy, and wherein the method further comprises: d) after step c) , heating the sleeve to the transition temperature of the shape-memory alloy thereby expanding the sleeve to form a metal-to-metal seal between said end parts .
  • each sleeve is heated to the transition temperature of the shape-memory alloy thereby expanding the sleeves to form a metal-to- metal seal between said end parts.
  • each sleeve is expandable by virtue of an increase of the wall thickness of the sleeve upon heating of the sleeve to the transition temperature of the shape- memory alloy.
  • the casing strings 16 and 21 are arranged in a borehole (not shown) drilled in the underground formation, and the preceding casing string 21 is secured to the formation by means of cement (not shown) .
  • the next casing string can be lowered through the preceding one, its outer diameter is smaller than the inner diameter of the preceding casing string 21.
  • the device 10 comprises a cylindrical body 30 provided with an annular shoulder 32 for positioning the device 10 at the top end 15 of the next casing string 16. The device 10 is lowered into the preceding casing string 21 at the lower end of a drill string 31, of which the lower end is connected to the upper end of the cylindrical body 30.
  • the cylindrical body 30 is provided with an annular recess 34, in which annular recess 34 is arranged an explosive charge 37, which explosive charge 37 is covered by a protective sleeve 38.
  • the cylindrical body 30 further comprises a device 40 for detonating the explosive charge 37.
  • the device 40 for detonating the explosive charge is activated from surface by passing a signal through a cable 41 that extends to surface. The detonation is passed from the detonator 40 to the explosive charge 34 by transfer conduit 42.
  • the device 10 is brought into position as shown in the drawing, and the device 40 for detonating the explosive charge 37 is activated.
  • the explosion of the explosive charge 37 causes the top end 15 of the next casing string 16 to deform.
  • the anvil section 23 of the bottom end 20 of the preceding casing string 21 prevents further expansion of the top end 15, and thus the two casing strings are interconnected.
  • the device 10 is pulled out of the well .
  • anvil section 23 is provided with an annular recess 45.
  • a sleeve of shape-memory alloy (not shown) is provided on the outer surface of the first end of the second pipe and on the inner surface of anvil section, wherein the shape- memory alloy expands on heating to provide a metal-to- metal seal.
  • the seal can also be a hard elastomeric part or a metal part.
  • the inner diameter of the anvil section can be so selected that the inner diameter of the second pipe
  • the second pipe (after expansion) is substantially equal to the inner diameter of the first pipe.
  • the second pipe can be expanded over its full length, so that its inner diameter is not less than the inner diameter of the first pipe.
  • device according to the present invention allows a connection such that the inner diameter at the connection is substantial equal to the inner diameter of the first pipe.

Abstract

A method of connecting a first pipe to a second pipe having an end part fitting into an end part of the first pipe, comprising arranging the end part of the second pipe within the end part of the first pipe, arranging a sleeve of a deformable material between said end parts, and radially expanding the end part of the second pipe towards the end pipe of the first pipe so as to bias the sleeve between said end parts.

Description

PIPE CONNECTING METHOD
The present invention relates to a method of connecting pipes. These pipes can be sections of a pipeline or well tubulars that are used in a well for producing hydrocarbons from an underground reservoir. In particular the method is used in connection with interconnecting casing strings or liners. The casing string is a string of steel pipe sections that is used to line a borehole extending through an underground formation, and that is secured to the formation by means of cement. In a single well there may be two or more casing strings, wherein the upper end of the next casing string is hung off from the lower end of the preceding casing string. In order to be able to bring the next casing string into place, the outer diameter of the next casing string has to be smaller than the inner diameter of the preceding casing string. The next casing string may also be a so-called liner. In the specification the expression 'casing string' will also be used to refer to a liner. Nowadays there are techniques that allow enlarging the diameter of a casing string when it is in the borehole. However, these techniques do not allow expanding the connection where the next casing string is hung off from the previous casing string. Thus there is a need to provide a method that enables connecting a first pipe to a second pipe such that the inner diameter at the connection is not less than the inner diameter of the second pipe and that the pipes are adequately sealed at the connection. In accordance with the invention there is provided a method of connecting a first pipe to a second pipe having an end part fitting into an end part of the first pipe, comprising a) arranging the end part of the second pipe within the end part of the first pipe; b) arranging a sleeve of a deformable material between said end parts; and c) radially expanding the end part of the second pipe towards the end part of the first pipe so as to bias the sleeve between said end parts. By biasing the sleeve of deformable material between the end parts an adequate seal is achieved between the pipes .
The sleeve can for example be made of a hard elastomer or a ductile metal, however it is preferred that the sleeve is made of a shape-memory alloy so that the sleeve is expandable upon heating of the sleeve to the transition temperature of the shape-memory alloy, and wherein the method further comprises: d) after step c) , heating the sleeve to the transition temperature of the shape-memory alloy thereby expanding the sleeve to form a metal-to-metal seal between said end parts .
Suitably two said shape-memory alloy sleeves are arranged concentrically between said end parts, one of the sleeves being connected to the outer surface of the end part of the second pipe, and the other sleeve being connected to the inner surface of the end part of the first pipe, and wherein after step c) each sleeve is heated to the transition temperature of the shape-memory alloy thereby expanding the sleeves to form a metal-to- metal seal between said end parts.
Preferably each sleeve is expandable by virtue of an increase of the wall thickness of the sleeve upon heating of the sleeve to the transition temperature of the shape- memory alloy. The invention will now be described by way of example in more detail with reference to the accompanying drawing showing schematically a partial longitudinal section of the device 10 according to the present invention in a position in which it can connect the first end of a second pipe in the form of the top end 15 of a next casing string 16 to the second end of a first pipe in the form of the bottom end 20 a preceding casing string 21. The bottom end 20 is provided with an anvil section 23. The casing strings 16 and 21 are arranged in a borehole (not shown) drilled in the underground formation, and the preceding casing string 21 is secured to the formation by means of cement (not shown) . In order that the next casing string can be lowered through the preceding one, its outer diameter is smaller than the inner diameter of the preceding casing string 21. The device 10 comprises a cylindrical body 30 provided with an annular shoulder 32 for positioning the device 10 at the top end 15 of the next casing string 16. The device 10 is lowered into the preceding casing string 21 at the lower end of a drill string 31, of which the lower end is connected to the upper end of the cylindrical body 30.
The cylindrical body 30 is provided with an annular recess 34, in which annular recess 34 is arranged an explosive charge 37, which explosive charge 37 is covered by a protective sleeve 38. The cylindrical body 30 further comprises a device 40 for detonating the explosive charge 37. The device 40 for detonating the explosive charge is activated from surface by passing a signal through a cable 41 that extends to surface. The detonation is passed from the detonator 40 to the explosive charge 34 by transfer conduit 42.
During normal operation, the device 10 is brought into position as shown in the drawing, and the device 40 for detonating the explosive charge 37 is activated. The explosion of the explosive charge 37 causes the top end 15 of the next casing string 16 to deform. The anvil section 23 of the bottom end 20 of the preceding casing string 21 prevents further expansion of the top end 15, and thus the two casing strings are interconnected. After having made the connection the device 10 is pulled out of the well .
In order to improve the strength of the connection the anvil section 23 is provided with an annular recess 45.
In order to improve the sealing of the connection, a sleeve of shape-memory alloy (not shown) is provided on the outer surface of the first end of the second pipe and on the inner surface of anvil section, wherein the shape- memory alloy expands on heating to provide a metal-to- metal seal. Alternatively, the seal can also be a hard elastomeric part or a metal part.
The inner diameter of the anvil section can be so selected that the inner diameter of the second pipe
(after expansion) is substantially equal to the inner diameter of the first pipe. Moreover, with known techniques the second pipe can be expanded over its full length, so that its inner diameter is not less than the inner diameter of the first pipe.
Thus the use of device according to the present invention allows a connection such that the inner diameter at the connection is substantial equal to the inner diameter of the first pipe.

Claims

C L A I M S
1. A method of connecting a first pipe to a second pipe having an end part fitting into an end part of the first pipe, comprising a) arranging the end part of the second pipe within the end part of the first pipe; b) arranging a sleeve of a deformable material between said end parts; and c) radially expanding the end part of the second pipe towards the end part of the first pipe so as to bias the sleeve between said end parts.
2. The method of claim 1, wherein the sleeve is made of a hard elastomer or a ductile metal.
3. The method of claim 1, wherein the sleeve is made of a shape-memory alloy so that the sleeve is expandable upon heating of the sleeve to the transition temperature of the shape-memory alloy, and wherein the method further comprises : d) after step c) , heating the sleeve to the transition temperature of the shape-memory alloy thereby expanding the sleeve to form a metal-to-metal seal between said end parts .
4. The method of claim 3, wherein two said shape-memory alloy sleeves are arranged concentrically between said end parts, one of the sleeves being connected to the outer surface of the end part of the second pipe, and the other sleeve being connected to the inner surface of the end part of the first pipe, and wherein after step c) each sleeve is heated to the transition temperature of the shape-memory alloy thereby expanding the sleeves to form a metal-to-metal seal between said end parts.
5. The method of claim 3 or 4 , wherein each sleeve is expandable by virtue of an increase of the wall thickness of the sleeve upon heating of the sleeve to the transition temperature of the shape-memory alloy.
6. The method of any one of claims 1-5, wherein the inner surface of the end part of the first pipe is provided with an annular recess.
7. The method of any one of claims 1-5, wherein step c) comprises installing a device provided with an explosive charge in the end part of the second pipe, and detonating the explosive charge.
8. The method of claim 7, wherein said device comprises a cylindrical body provided with an annular shoulder for positioning the device against the end part of the second pipe, and an annular recess in which the explosive charge is arranged.
9. The method of any one of claims 1-8, wherein the first pipe is an upper wellbore casing and the second pipe is a lower wellbore casing.
10. The method substantially as described hereinbefore with reference to the drawing.
PCT/EP2000/011994 1999-11-29 2000-11-28 Pipe connecting method WO2001038687A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00993181A EP1234090B1 (en) 1999-11-29 2000-11-28 Pipe connecting method
NO20022510A NO326362B1 (en) 1999-11-29 2002-05-28 Procedure for interconnecting rudder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99309531.4 1999-11-29
EP99309531 1999-11-29

Publications (2)

Publication Number Publication Date
WO2001038687A2 true WO2001038687A2 (en) 2001-05-31
WO2001038687A3 WO2001038687A3 (en) 2001-11-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/011994 WO2001038687A2 (en) 1999-11-29 2000-11-28 Pipe connecting method

Country Status (6)

Country Link
US (1) US6907652B1 (en)
EP (1) EP1234090B1 (en)
GC (1) GC0000351A (en)
NO (1) NO326362B1 (en)
OA (1) OA12103A (en)
WO (1) WO2001038687A2 (en)

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WO2014055089A1 (en) * 2012-10-05 2014-04-10 Halliburton Energy Services, Inc. Well tool with dynamic metal-to-metal shape memory material seal
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WO2020139322A1 (en) * 2018-12-26 2020-07-02 Halliburton Energy Services, Inc. Method and system for creating metal-to-metal seal
US11767730B2 (en) 2018-12-26 2023-09-26 Halliburton Energy Services, Inc. Method and system for creating metal-to-metal

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OA12103A (en) 2006-05-04
EP1234090B1 (en) 2003-08-06
EP1234090A2 (en) 2002-08-28
US6907652B1 (en) 2005-06-21
NO20022510L (en) 2002-07-25
WO2001038687A3 (en) 2001-11-29
NO326362B1 (en) 2008-11-17
GC0000351A (en) 2007-03-31
NO20022510D0 (en) 2002-05-28

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