US2821362A - Extensible whipstock - Google Patents

Extensible whipstock Download PDF

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Publication number
US2821362A
US2821362A US524428A US52442855A US2821362A US 2821362 A US2821362 A US 2821362A US 524428 A US524428 A US 524428A US 52442855 A US52442855 A US 52442855A US 2821362 A US2821362 A US 2821362A
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Prior art keywords
whipstock
plate
collar
ring
bit
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US524428A
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Albert J Hatcher
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WAYNE A JONES
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WAYNE A JONES
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    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock

Definitions

  • This invention relates to a whipstock which is used in oil and gas wells for the purpose of deflecting a bit in the well bore, for the purpose of either straightening that bore or to direct the bit at an angle therefrom, so that a productive area adjacent to the well bore may be penetrated.
  • This invention also relates to a whipstock in which the drilling bit is guided for a greater distance than is possible in whipstocks heretofore in use.
  • An object of my invention is to provide a whipstock with an extensible surface, said surface continuing the angular surface presented by the main whipstock body so that the drilling bit will be guided and directed for a greater distance.
  • Another object of my invention is to provide a novel extensible whipstock of the character stated, in which a plate is slidably mounted on the whipstock and is movable downwardly when engaged by a projection or collar on the drill pipe.
  • Still another object of my invention is to provide a novel extensible whipstock of the character stated, in which the movable or adjustable plate thereon can be extended in one direction of movement of the drill pipe and can be retrieved from the oil well on upward movement of the drill pipe, together with the main body of the whipstock.
  • Figure l is a longitudinal sectional view of my whipstock positioned within the bore of a well.
  • Figure 2 is an enlarged sectional view taken on line 2 2 of Figure l.
  • Figure 3 is a fragmentary longitudinal sectional view of the upper or collar portion of my whipstock.
  • the numeral 1 indicates the bore of a well, such as an oil well, and the formation or undrilled part of the bore is represented at 2.
  • a whipstock When a whipstock is used it is necessary to dellect the bore 1 from its vertical direction, as shown at 3.
  • the bit 4 is directed at an angle from the bore 1 by means of the whipstock 5 which is positioned immediately above the formation 2, or the bottom of the hole.
  • the bit 4 is mounted on the lower end of the drill pipe 6 and this drill pipe has collars 7 thereon spaced at regular intervals for the purpose of connecting or coupling the various sections of the drill pipe.
  • the whipstock S includes a lower body 8 which is formed with a sharp point or edge 9 which is embedded in the formation 2 to hold the whipstock body 8 against rotation.
  • a tapered o1' inclined surface 10 is formed on one side of the body and is also arcuate in cross section, and this inclined surface extends from the bottom of the body 8 to an upwardly projecting stem portion 11.
  • the stem portion 11 of the body 8 extends upwardly to and is preferably integral with a collar 12 which is positioned at the upper end thereof.
  • the stem portion 11 is arcuate in cross section to conform in shape to the surface 10.
  • This slot extends from the collar 12 to the top of the body 8 so that the plate 13 may have a very appreciable vertical movement and can be projected a substantial distance below the bottom edge of the whipstock body 8.
  • the plate 13 will be guided in its vertical movement from extended to retracted position, as will be subsequently described.
  • the plate 13 is provided with a ring 16 at its upper end and this ring is seated within the collar 12.
  • the ring 16 is held within the collar 12 by suitable latches or spring detents 17.
  • the ring 16 is of such diameter that the coupling 7 on the drill pipe 6 will engage the ring as the bit 4 moves downwardly, so that the plate 13 will project below the lower edge of the body 8, thus acting as a further or additional guide for the bit 4 and more eectively directing the bit in the desired direction.
  • the bit 4 will engage the ring 16, returning that ring to its position within the collar 12, and in turn this collar and the whipstock 1 will be picked up and thus the entire structure can be removed from the well after it has been used.
  • the same procedure is used in lowering the tool into the well, that is, the entire structure is supported on the bit 4 and is thus lowered into the well until bottom is reached.
  • the distance from the bit 4 to the coupling 7 is such that the bit will be started on its angular direction by the angular surface 10', and thereafter the plate 13 is released and is pushed downwardly, together with the bit 4, to more elfectively guide that bit.
  • An extensible whipstock comprising an elongated body, a collar on the upper end of said body, said body having a longitudinally extending and tapered deflecting surface thereon, a flexible plate resting on the body and extending longitudinally thereof from below said collar to the lower edge of said body, means slidably coupling the plate to the body, said plate resting on the tapered deflecting surface of said body, a ring on the upper end of said plate, said ring being seated in said collar in one position of the plate, and a releasable latch means coupling said ring to the collar, said latch means being releasable to permit said plate to slide and project an appreciable distance below the lower edge of the body.
  • An extensible whipstock comprising an elongated body, a collar on the upper end of said body, said body having a longitudinally extending and tapered deflecting surface thereon, a exible plate resting on the body and extending longitudinally thereof from below said collar to the lower edge of said body, means slidably coupling the plate to the body, said means including a rail on the plate, and track means on the body engageable by the rail, said plate resting on the tapered deecting surface of said body, a ring on the upper end of said plate, said ring being seated in said collar in one position of the plate, and a releasable latch means coupling said ring to the collar, said latch means being releasable to permit said plate to slide and project an appreciable distance below the lower edge of the body.
  • An extensible whipstock comprising an elongated 3 body, a collar on the upper end of said body, said body having a longitudinally extending and tapered deilecting surface thereon, a flexible plate resting on the body and extending longitudinally thereof from below said collar to the lower edge of said body, means slidably coupling the plate to the body including a rail projecting from said plate, said body having a longitudinally extending slot formed therein into which said rail extends, said plate resting onv the tapered deecting surface of said body, a ring on the upper end of said plate, said ring being seated in said collar in one position of the plate, and a releasable latch means coupling said n'ng to the collar, said latch means being releasable to permit said plate to slide and project an appreciable distance below the lower edge of the body.
  • An extensible whipstock comprising a body, a collar at the upper end of said' body, said body having a longitudinally extending tapered deecting surface thereon, the de'ecting surface of said body being substantially concave in shape, a exible plate resting on the deilecting surface of the bodyy and extending longitudinally thereof from said collar to the lower edge thereof, means slidably coupling the plate to the body, a ring on the upper end of said plate, said ring being seated in said collar in one position of the plate, and a releasable latch means coupling said plate to the collar, said latch means being releasable to permit said plate to slide and project an appreciable distance below the lower edge of the body.

Description

A. .1.YV HATCHER EXTENSIBLE WHIPSTOCK Jan. 28, 1958 Filed July 26, 1955 i 1 lf2 United States Patent O EXTENSIBLE WHIPSTOCK Albert J. Hatcher, Long Beach, Calif., assigner of fifty percent to Wayne A. Jones, Bellflower, Calif.
Application July 26, 1955, Serial No. 524,428
4 Claims. (Cl. Z55- 1.6)
This invention relates to a whipstock which is used in oil and gas wells for the purpose of deflecting a bit in the well bore, for the purpose of either straightening that bore or to direct the bit at an angle therefrom, so that a productive area adjacent to the well bore may be penetrated. This invention also relates to a whipstock in which the drilling bit is guided for a greater distance than is possible in whipstocks heretofore in use.
An object of my invention is to provide a whipstock with an extensible surface, said surface continuing the angular surface presented by the main whipstock body so that the drilling bit will be guided and directed for a greater distance.
Another object of my invention is to provide a novel extensible whipstock of the character stated, in which a plate is slidably mounted on the whipstock and is movable downwardly when engaged by a projection or collar on the drill pipe.
Still another object of my invention is to provide a novel extensible whipstock of the character stated, in which the movable or adjustable plate thereon can be extended in one direction of movement of the drill pipe and can be retrieved from the oil well on upward movement of the drill pipe, together with the main body of the whipstock.
Other objects, advantages and features of invention may appear from the accompanying drawing, the subjoined detailed description and the appended claims.
In the drawing:
Figure l is a longitudinal sectional view of my whipstock positioned within the bore of a well.
Figure 2 is an enlarged sectional view taken on line 2 2 of Figure l.
Figure 3 is a fragmentary longitudinal sectional view of the upper or collar portion of my whipstock.
Referring more particularly to the drawing, the numeral 1 indicates the bore of a well, such as an oil well, and the formation or undrilled part of the bore is represented at 2. When a whipstock is used it is necessary to dellect the bore 1 from its vertical direction, as shown at 3. For this purpose the bit 4 is directed at an angle from the bore 1 by means of the whipstock 5 which is positioned immediately above the formation 2, or the bottom of the hole. The bit 4 is mounted on the lower end of the drill pipe 6 and this drill pipe has collars 7 thereon spaced at regular intervals for the purpose of connecting or coupling the various sections of the drill pipe. The whipstock S includes a lower body 8 which is formed with a sharp point or edge 9 which is embedded in the formation 2 to hold the whipstock body 8 against rotation. A tapered o1' inclined surface 10 is formed on one side of the body and is also arcuate in cross section, and this inclined surface extends from the bottom of the body 8 to an upwardly projecting stem portion 11. The stem portion 11 of the body 8 extends upwardly to and is preferably integral with a collar 12 which is positioned at the upper end thereof. The stem portion 11 is arcuate in cross section to conform in shape to the surface 10.
2,821,362 Patented Jan. 28, 1958 ICC As thus far described the whipstock is usual and well known and is particularly shown and described in Patent No. 1,970,761, August 2l, 1934. In order that the bearing surface of the whipstock may be extended so that the bit 4 will be guided for a greater distance, I provide an extension plate 13 which extends from top to bottom of the whipstock 1 and normally lies against the inclined surface 16. The plate 13 is preferably arcuate in crosssection, conforming to the shape of the arcuate stem portion 11, as well as the arcuate shape of the inclined surface 10. The plate 13 is provided with a guide strip 14 which fits in an appropriate rail 15 on the neck 11. The rail 15 is mounted in a vertical slot 15' in the stem 11. This slot extends from the collar 12 to the top of the body 8 so that the plate 13 may have a very appreciable vertical movement and can be projected a substantial distance below the bottom edge of the whipstock body 8. Thus the plate 13 will be guided in its vertical movement from extended to retracted position, as will be subsequently described.
The plate 13 is provided with a ring 16 at its upper end and this ring is seated within the collar 12. The ring 16 is held within the collar 12 by suitable latches or spring detents 17. The ring 16 is of such diameter that the coupling 7 on the drill pipe 6 will engage the ring as the bit 4 moves downwardly, so that the plate 13 will project below the lower edge of the body 8, thus acting as a further or additional guide for the bit 4 and more eectively directing the bit in the desired direction. When the whipstock is to be removed from the well the bit 4 will engage the ring 16, returning that ring to its position within the collar 12, and in turn this collar and the whipstock 1 will be picked up and thus the entire structure can be removed from the well after it has been used. The same procedure is used in lowering the tool into the well, that is, the entire structure is supported on the bit 4 and is thus lowered into the well until bottom is reached. The distance from the bit 4 to the coupling 7 is such that the bit will be started on its angular direction by the angular surface 10', and thereafter the plate 13 is released and is pushed downwardly, together with the bit 4, to more elfectively guide that bit.
Having described my invention, I claim:
l. An extensible whipstock comprising an elongated body, a collar on the upper end of said body, said body having a longitudinally extending and tapered deflecting surface thereon, a flexible plate resting on the body and extending longitudinally thereof from below said collar to the lower edge of said body, means slidably coupling the plate to the body, said plate resting on the tapered deflecting surface of said body, a ring on the upper end of said plate, said ring being seated in said collar in one position of the plate, and a releasable latch means coupling said ring to the collar, said latch means being releasable to permit said plate to slide and project an appreciable distance below the lower edge of the body.
2. An extensible whipstock comprising an elongated body, a collar on the upper end of said body, said body having a longitudinally extending and tapered deflecting surface thereon, a exible plate resting on the body and extending longitudinally thereof from below said collar to the lower edge of said body, means slidably coupling the plate to the body, said means including a rail on the plate, and track means on the body engageable by the rail, said plate resting on the tapered deecting surface of said body, a ring on the upper end of said plate, said ring being seated in said collar in one position of the plate, and a releasable latch means coupling said ring to the collar, said latch means being releasable to permit said plate to slide and project an appreciable distance below the lower edge of the body.
3. An extensible whipstock comprising an elongated 3 body, a collar on the upper end of said body, said body having a longitudinally extending and tapered deilecting surface thereon, a flexible plate resting on the body and extending longitudinally thereof from below said collar to the lower edge of said body, means slidably coupling the plate to the body including a rail projecting from said plate, said body having a longitudinally extending slot formed therein into which said rail extends, said plate resting onv the tapered deecting surface of said body, a ring on the upper end of said plate, said ring being seated in said collar in one position of the plate, and a releasable latch means coupling said n'ng to the collar, said latch means being releasable to permit said plate to slide and project an appreciable distance below the lower edge of the body.
4. An extensible whipstock comprising a body, a collar at the upper end of said' body, said body having a longitudinally extending tapered deecting surface thereon, the de'ecting surface of said body being substantially concave in shape, a exible plate resting on the deilecting surface of the bodyy and extending longitudinally thereof from said collar to the lower edge thereof, means slidably coupling the plate to the body, a ring on the upper end of said plate, said ring being seated in said collar in one position of the plate, and a releasable latch means coupling said plate to the collar, said latch means being releasable to permit said plate to slide and project an appreciable distance below the lower edge of the body.
References Cited in the le of this patent UNITED STATES PATENTS 1,970,761 McVicar Aug. 2l, 1934 2,105,721 Cutrer et al. Jan. 18, 1938 2,334,746 Brantly NOV. 23, 1943 2,586,878 Staton ..2 Feb. 26, 1952 2,669,430 Zublin Feb. 16, 1954
US524428A 1955-07-26 1955-07-26 Extensible whipstock Expired - Lifetime US2821362A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3116799A (en) * 1960-08-01 1964-01-07 Drilling Control Corp Whipstock apparatus and method of using the same
US4431068A (en) * 1979-02-16 1984-02-14 Mobil Oil Corporation Extended reach drilling method
US5012877A (en) * 1989-11-30 1991-05-07 Amoco Corporation Apparatus for deflecting a drill string
US5361833A (en) * 1993-11-18 1994-11-08 Triumph*Lor, Inc. Bottom set, non-retrievable whipstock assembly
US5425419A (en) * 1994-02-25 1995-06-20 Sieber; Bobby G. Whipstock apparatus and methods of use
US5535822A (en) * 1994-09-08 1996-07-16 Enterra Corporation Apparatus for retrieving whipstock
USRE37867E1 (en) 1993-01-04 2002-10-08 Halliburton Energy Services, Inc. Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes
US20040182568A1 (en) * 2002-05-02 2004-09-23 Halliburton Energy Services Expanding wellbore junction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1970761A (en) * 1932-10-03 1934-08-21 John Eastman Whipstock
US2105721A (en) * 1935-06-04 1938-01-18 George J Barrett And Sosthene Whipstock
US2334746A (en) * 1940-11-12 1943-11-23 Drilling And Exploration Compa Collapsible whipstock
US2586878A (en) * 1947-05-08 1952-02-26 Eastman Oil Well Survey Co Drilling apparatus
US2669430A (en) * 1951-11-06 1954-02-16 John A Zublin Apparatus for drilling deviating bores utilizing a plurality of straight tubular drill guide sections

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1970761A (en) * 1932-10-03 1934-08-21 John Eastman Whipstock
US2105721A (en) * 1935-06-04 1938-01-18 George J Barrett And Sosthene Whipstock
US2334746A (en) * 1940-11-12 1943-11-23 Drilling And Exploration Compa Collapsible whipstock
US2586878A (en) * 1947-05-08 1952-02-26 Eastman Oil Well Survey Co Drilling apparatus
US2669430A (en) * 1951-11-06 1954-02-16 John A Zublin Apparatus for drilling deviating bores utilizing a plurality of straight tubular drill guide sections

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3116799A (en) * 1960-08-01 1964-01-07 Drilling Control Corp Whipstock apparatus and method of using the same
US4431068A (en) * 1979-02-16 1984-02-14 Mobil Oil Corporation Extended reach drilling method
US5012877A (en) * 1989-11-30 1991-05-07 Amoco Corporation Apparatus for deflecting a drill string
USRE37867E1 (en) 1993-01-04 2002-10-08 Halliburton Energy Services, Inc. Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes
USRE40067E1 (en) 1993-01-04 2008-02-19 Halliburton Energy Services, Inc. Downhole equipment tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes
USRE39141E1 (en) 1993-01-04 2006-06-27 Halliburton Energy Services Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes
USRE38642E1 (en) 1993-01-04 2004-11-02 Halliburton Energy Services, Inc. Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes
USRE38636E1 (en) 1993-01-04 2004-10-26 Halliburton Energy Services, Inc. Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical oil wells connected to liner-equipped multiple drainholes
USRE38616E1 (en) 1993-01-04 2004-10-12 Halliburton Energy Services, Inc. Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes
US5361833A (en) * 1993-11-18 1994-11-08 Triumph*Lor, Inc. Bottom set, non-retrievable whipstock assembly
US5467821A (en) * 1994-02-25 1995-11-21 Sieber; Bobby G. Rectilinear tool for use with a slotted face wellbore deviation assembly
US5549163A (en) * 1994-02-25 1996-08-27 Sieber; Bobby G. Piston sleeve valve for use with oilfield fishing operations
US5553671A (en) * 1994-02-25 1996-09-10 Sieber; Bobby G. Piston sub for isolating drilling fluids from hydraulic fluids
US5499682A (en) * 1994-02-25 1996-03-19 Sieber; Bobby G. Method for setting a slotted face wellbore deviation assembly using a rectilinear setting tool
US5474133A (en) * 1994-02-25 1995-12-12 Sieber; Bobby G. Method for retreiving a slotted face wellbore deviation assembly using a retrieval tool
US5474125A (en) * 1994-02-25 1995-12-12 Sieber; Bobby G. Retrieval tool for use with a slotted face wellbore deviation assembly
US5467820A (en) * 1994-02-25 1995-11-21 Sieber; Bobby G. Slotted face wellbore deviation assembly
US5425419A (en) * 1994-02-25 1995-06-20 Sieber; Bobby G. Whipstock apparatus and methods of use
US5535822A (en) * 1994-09-08 1996-07-16 Enterra Corporation Apparatus for retrieving whipstock
US20040182568A1 (en) * 2002-05-02 2004-09-23 Halliburton Energy Services Expanding wellbore junction
US6935422B2 (en) * 2002-05-02 2005-08-30 Halliburton Energy Services, Inc. Expanding wellbore junction

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