US3079177A - Broken casing coupling means with removable inner guide and permanent overshot - Google Patents

Broken casing coupling means with removable inner guide and permanent overshot Download PDF

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Publication number
US3079177A
US3079177A US138184A US13818461A US3079177A US 3079177 A US3079177 A US 3079177A US 138184 A US138184 A US 138184A US 13818461 A US13818461 A US 13818461A US 3079177 A US3079177 A US 3079177A
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United States
Prior art keywords
casing
pipe string
extension member
guide member
section
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Expired - Lifetime
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US138184A
Inventor
James G Walvoord
Vergil L Garlington
George H Hacke
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Jersey Production Research Co
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Jersey Production Research Co
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/10—Reconditioning of well casings, e.g. straightening
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B17/021—Devices for subsurface connecting or disconnecting by rotation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot

Definitions

  • This invention relates to apparatus for assembling a pipe string in a borehole, and more particularly to apparatus for facilitating the interconnection of well pipe string sections where one section is permanently positioned in the bottom of a borehole.
  • a tubular extension member is provided for the upper pipe string section, having an inner diameter somewhat greater than the outer diameter of the lower pipe string section, or fish, remaining in the borehole.
  • Grapple means are provided in the extension member for gripping the lower pipe string section when slid thereover.
  • a retrievable guide member extending through the extension member to below the lower end of the extension member so as to enter the bore of the lower pipe string section.
  • FIG. 1 is an elevational view partially in cross section of an embodiment of the invention in position in a bore hole during connection operations;
  • FIG. 2 is an elevatioual view of the apparatus of FIG. 1 after the well pipe sections have been interconnected.
  • FIGS. 1 and 2 there is shown a lower casing string 27 in a borehole 25. It is assumed that the lower casing section 27 has become twisted off during a well completion operation and that it is desired to reconnect an upper casing string thereto.
  • a section of an upper casing string 1 is illustrated as being of somewhat greater diameter than the diameter of lower casing string 27.
  • a tubular extension member for casing string 1 comprises a casing sub or safety joint 5 threadedly connected to the housing of a casing patch tool 11, and a lowermost outer guide member 23.
  • grapple or slips 13 connected to an annular carrier member 15 therefor.
  • the carrier member 15 rests on a shoulder 17 at the upper end of outer guide member 23 and includes an annular sealing element 16 for effecting a fluid seal between carrier member 15 and the casing patch tool housing. It is manitest that the grapple 13 and the carrier member 15 therefor will be securely held within the casing patch tool housing.
  • a suitable casing patch tool is illustrated and described at page 796 of the Composite Catalog of Oil Field Equipment and Services, 22d edition (1957).
  • Threads 7 are provided in the bore of the tubular extension member immediately above the grapple 13.
  • the threads are here shown as being within the bore of the safety joint 5. The function of the threads will become apparent below.
  • the inner diameter of the outer guide member 23 is somewhat greater than the outer diameter of casing section 27 so that the outer guide member can slide over the casing section to permit the grapple 13 to grip the casing section 27 after the grapple is slid thereover.
  • the inner guide member 19 is in the form of a truncated cone so as to facilitate stabbing of the guide member into the bore of the casing section 27.
  • the space between the inner guide member 19 and the grapple 13 is substantially greater than the thickness of the casing section 27.
  • a fishing neck 3 is afiixed to the upper end of the inner guide member 19 so that a work string overshot 33 (see FIG. 2) in the lower end of a work string 31 may be slid thereover and affixed thereto.
  • a longitudinal bore 21 extends through the inner guide member 19 and fishing neck 3 so that fluids may pass therethrough into the bore of the casing string 1 as the casing string is lowered through the borehole.
  • the apparatus described above is lowered until the lower end of the inner guide member 153 is substantially at the upper end of casing string 27.
  • the guide member 19 is stabbed into the bore of the casing 27, and the string is lowered until the grapple 13 grips the casing string 27, as shown in FIG. 2.
  • a work string 31 and overshot 33 preferably having slips therein, are lowered in the casing until the fishing neck 3 is engaged and gripped.
  • the inner guide member 15 is rotated counterclockwise, as viewed, until it is released from the safety joint 5.
  • a mill is lowered through the casing string 1 to cut out the internal threads 7 in the safety joint 5. If it is so desired, casing 1 may be dis connected from safety joint 5 and a casing string of smaller diameter may be connected thereto.
  • Apparatus for connecting together upper and lower pipe string sections in a borehole comprising:
  • a tubular extension member for said upper pipe string section having an inner diameter greater than the outer diameter of said lower pipe string section;
  • annular grapple means connected in said extension member for gripping said lower pipe string section when slid thereover;
  • a retrievable inner guide member detachably aiiixed to the upper end of said extension member within the bore of said extension member above said grapple means and extending through said extension member and grapple means to below the lower end of said extension member so as to enter the bore of said lower pipe string section, said guide member having a longitudinal bore therethrough;
  • a fishing neck connected on said guide member extending above the threaded portion thereof to permit disengagement of said guide member from said extension member and retrieval of said extension member from the pipe string.
  • Apparatus for connecting together upper and lower pipe string sections in a borehole comprising:
  • a tubular extension member for said upper pipe string section having an inner diameter greater than the outer diameter of said lower pipe string section;
  • grapple means in said extension member for gripping said lower pipe string section when slid thereover;
  • a retrievable, substantially conical inner guide member having a threaded upper portion engaging said internal threads of said tubular extension member, extending below the lower end of said extension member to enter the bore of said lower pipe string section;
  • said guide member having a longitudinal bore therethrough and a fishing neck on said guide member extending above the threaded portion thereof to permit disengagement of said guide member from said extension member by a work string overshot.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Earth Drilling (AREA)

Description

Feb. 26, 1963 J. a. WALVOORD IETAI. 3, 7
BROKEN CASING COUPLING MEANS WITH REMOVABLE INNER GUIDE AND PERMANENT OVERSHOT Filed Sept. 14, 1961 FIG.\. l FIGZ.
1 k 7 7' I 313% L I i I ii 11 I x 3 1 W 2 :k i E 5 I 5 l 1- 7 94 k I I 9'44 I97 n H l H4 l 5 1 I34 1 I3 k IS l i I57 I l i l6+ i 1 5 17 I7 I 23 l I 23 I a \[l :;l |l I l I I I I I 1| I 27- I I I 274 k 11 L JAMES s. WALVOORD, GEORGE H. HACKE, I y VERGIL GARLINGTON,
ATTORNEY.
\ INVENTORS.
United States Patent fifice 3,079,177 Patented Feb. as, was
BROKEN CASING cohrirNo MEANS wrrrr RE- MOVABLE INNER onion AND PERMANENT.
ovnusnor James G. Walvoord and Vergil L. Garlington, Grand isle, 'and George H. Hacke, New Orleans, La, assignors, by mesne assignments, to Jersey Production Research Company, Tulsa, Okla, a corporation of Delaware Filed Sept. 14, 1961, Ser. No. 138,184 2 Claims. (Cl. 285-27) This invention relates to apparatus for assembling a pipe string in a borehole, and more particularly to apparatus for facilitating the interconnection of well pipe string sections where one section is permanently positioned in the bottom of a borehole.
It is not uncommon for a section of a well pipe string, such as a casing string, to corrode or be otherwise damaged so that it is necessary to cut the casing below the damaged portion in order to effect a repair. In such a circumstance, the operator has the choice or" attempting the reconnection of the pipe string sections or of bypassing the casing string remaining in the bottom of the well bore by directional drilling techniques. It is manifest that reconnection of the pipe string sections is the most desirable of the above alternatives, and it is also apparent that such reconnection can be quite difiicult.
In accordance with the teachings of the invention, a tubular extension member is provided for the upper pipe string section, having an inner diameter somewhat greater than the outer diameter of the lower pipe string section, or fish, remaining in the borehole. Grapple means are provided in the extension member for gripping the lower pipe string section when slid thereover. Detachably connected to the tubular extension member Within the bore thereof is a retrievable guide member extending through the extension member to below the lower end of the extension member so as to enter the bore of the lower pipe string section. When the tubular extension member is lowered over the lower pipe string section, the guide member serves to locate the pipe string section and properly position the extension member thereover. After the grapple is set, the guide member is disconnected and retrieved from the borehole, thus providing a bore through which other pipe strings may be lowered or through which produc ion may be initiated.
Objects and features of the invention not apparent from the above discussion will become evident upon consideration of the following more detailed description thereof when taken in connection with the accompanying drawings, wherein:
FIG. 1 is an elevational view partially in cross section of an embodiment of the invention in position in a bore hole during connection operations; and
FIG. 2 is an elevatioual view of the apparatus of FIG. 1 after the well pipe sections have been interconnected.
With reference now to FIGS. 1 and 2, there is shown a lower casing string 27 in a borehole 25. It is assumed that the lower casing section 27 has become twisted off during a well completion operation and that it is desired to reconnect an upper casing string thereto. A section of an upper casing string 1 is illustrated as being of somewhat greater diameter than the diameter of lower casing string 27. A tubular extension member for casing string 1 comprises a casing sub or safety joint 5 threadedly connected to the housing of a casing patch tool 11, and a lowermost outer guide member 23. Within the housing of casing patch tool 11 is positioned grapple or slips 13 connected to an annular carrier member 15 therefor. The carrier member 15 rests on a shoulder 17 at the upper end of outer guide member 23 and includes an annular sealing element 16 for effecting a fluid seal between carrier member 15 and the casing patch tool housing. It is manitest that the grapple 13 and the carrier member 15 therefor will be securely held within the casing patch tool housing. A suitable casing patch tool is illustrated and described at page 796 of the Composite Catalog of Oil Field Equipment and Services, 22d edition (1957).
Left-hand internal threads 7 are provided in the bore of the tubular extension member immediately above the grapple 13. The threads are here shown as being within the bore of the safety joint 5. The function of the threads will become apparent below. The inner diameter of the outer guide member 23 is somewhat greater than the outer diameter of casing section 27 so that the outer guide member can slide over the casing section to permit the grapple 13 to grip the casing section 27 after the grapple is slid thereover.
A retrievable guide member 19, having a threaded upper section 9 matching the threads '7, is shown extending from the casing sub 5 to substantially below the lowermost end of outer guide mmeber 23. Preferably, the inner guide member 19 is in the form of a truncated cone so as to facilitate stabbing of the guide member into the bore of the casing section 27. The space between the inner guide member 19 and the grapple 13 is substantially greater than the thickness of the casing section 27. A fishing neck 3 is afiixed to the upper end of the inner guide member 19 so that a work string overshot 33 (see FIG. 2) in the lower end of a work string 31 may be slid thereover and affixed thereto. A longitudinal bore 21 extends through the inner guide member 19 and fishing neck 3 so that fluids may pass therethrough into the bore of the casing string 1 as the casing string is lowered through the borehole.
The apparatus described above is lowered until the lower end of the inner guide member 153 is substantially at the upper end of casing string 27. The guide member 19 is stabbed into the bore of the casing 27, and the string is lowered until the grapple 13 grips the casing string 27, as shown in FIG. 2. A work string 31 and overshot 33, preferably having slips therein, are lowered in the casing until the fishing neck 3 is engaged and gripped. The inner guide member 15 is rotated counterclockwise, as viewed, until it is released from the safety joint 5. After the inner guide member 19 and work string have been removed from the borehole, a mill is lowered through the casing string 1 to cut out the internal threads 7 in the safety joint 5. If it is so desired, casing 1 may be dis connected from safety joint 5 and a casing string of smaller diameter may be connected thereto.
The invention is not necessarily to be restricted to the specific structural details or arrangement of parts herein set forth, as various modifications thereof may be efiected without departing from the spirit and scope of the invention.
The objects and features of the invention having been completely described above, what is claimed is:
1. Apparatus for connecting together upper and lower pipe string sections in a borehole, comprising:
a tubular extension member for said upper pipe string section having an inner diameter greater than the outer diameter of said lower pipe string section;
annular grapple means connected in said extension member for gripping said lower pipe string section when slid thereover;
a retrievable inner guide member detachably aiiixed to the upper end of said extension member within the bore of said extension member above said grapple means and extending through said extension member and grapple means to below the lower end of said extension member so as to enter the bore of said lower pipe string section, said guide member having a longitudinal bore therethrough; and
a fishing neck connected on said guide member extending above the threaded portion thereof to permit disengagement of said guide member from said extension member and retrieval of said extension member from the pipe string.
2. Apparatus for connecting together upper and lower pipe string sections in a borehole, comprising:
a tubular extension member for said upper pipe string section having an inner diameter greater than the outer diameter of said lower pipe string section;
grapple means in said extension member for gripping said lower pipe string section when slid thereover;
internal threads in the bore of said tubular extension member above said grapple means;
a retrievable, substantially conical inner guide member having a threaded upper portion engaging said internal threads of said tubular extension member, extending below the lower end of said extension member to enter the bore of said lower pipe string section;
said guide member having a longitudinal bore therethrough and a fishing neck on said guide member extending above the threaded portion thereof to permit disengagement of said guide member from said extension member by a work string overshot.
References Cited in the tile of this patent UNITED STATES PATENTS 1,751,998 Hinderliter Mar. 25, 1930

Claims (1)

  1. 2. APPARATUS FOR CONNECTING TOGETHER UPPER AND LOWER PIPE STRING SECTIONS IN A BOREHOLE, COMPRISING: A TUBULAR EXTENSION MEMBER FOR SAID UPPER PIPE STRING SECTION HAVING AN INNER DIAMETER GREATER THAN THE OUTER DIAMETER OF SAID LOWER PIPE STRING SECTION; GRAPPLE MEANS IN SAID EXTENSION MEMBER FOR GRIPPING SAID LOWER PIPE STRING SECTION WHEN SLID THEREOVER; INTERNAL THREADS IN THE BORE OF SAID TUBULAR EXTENSION MEMBER ABOVE SAID GRAPPLE MEANS; A RETRIEVABLE, SUBSTANTIALLY CONICAL INNER GUIDE MEMBER HAVING A THREADED UPPER PORTION ENGAGING SAID IN-
US138184A 1961-09-14 1961-09-14 Broken casing coupling means with removable inner guide and permanent overshot Expired - Lifetime US3079177A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0210771A1 (en) * 1985-07-12 1987-02-04 Dailey Petroleum Services Corp. Spiralling tapered slip-on drill string stabilizer
EP0436417A2 (en) * 1989-12-15 1991-07-10 Schlumberger Limited A tubing and wireline conveyed perforating method and apparatus
US5095993A (en) * 1989-12-15 1992-03-17 Schlumberger Technology Corporation Anchor apparatus for a tubing and wireline conveyed method and apparatus
US20070023190A1 (en) * 2005-07-29 2007-02-01 Hall David R Stab Guide
CN103628837A (en) * 2013-11-11 2014-03-12 江苏君鑫谊石油机械有限公司 Multifunctional novel patching connector for casing joint

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751998A (en) * 1928-10-22 1930-03-25 Frank J Hinderliter Combination tap and die fishing tool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751998A (en) * 1928-10-22 1930-03-25 Frank J Hinderliter Combination tap and die fishing tool

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0210771A1 (en) * 1985-07-12 1987-02-04 Dailey Petroleum Services Corp. Spiralling tapered slip-on drill string stabilizer
EP0436417A2 (en) * 1989-12-15 1991-07-10 Schlumberger Limited A tubing and wireline conveyed perforating method and apparatus
US5095993A (en) * 1989-12-15 1992-03-17 Schlumberger Technology Corporation Anchor apparatus for a tubing and wireline conveyed method and apparatus
EP0436417A3 (en) * 1989-12-15 1992-08-05 Schlumberger Limited A tubing and wireline conveyed perforating method and apparatus
US20070023190A1 (en) * 2005-07-29 2007-02-01 Hall David R Stab Guide
US7275594B2 (en) * 2005-07-29 2007-10-02 Intelliserv, Inc. Stab guide
CN103628837A (en) * 2013-11-11 2014-03-12 江苏君鑫谊石油机械有限公司 Multifunctional novel patching connector for casing joint

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