US2207920A - Expanding foot piece for whipstocks - Google Patents

Expanding foot piece for whipstocks Download PDF

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Publication number
US2207920A
US2207920A US171465A US17146537A US2207920A US 2207920 A US2207920 A US 2207920A US 171465 A US171465 A US 171465A US 17146537 A US17146537 A US 17146537A US 2207920 A US2207920 A US 2207920A
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United States
Prior art keywords
whipstock
foot piece
well bore
whipstocks
position
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.)
Expired - Lifetime
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US171465A
Inventor
James D Hughes
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Eastman Oil Well Survey Co
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Eastman Oil Well Survey Co
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Application filed by Eastman Oil Well Survey Co filed Critical Eastman Oil Well Survey Co
Priority to US171465A priority Critical patent/US2207920A/en
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Publication of US2207920A publication Critical patent/US2207920A/en
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Application status is Expired - Lifetime legal-status Critical

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling
    • E21B7/06Deflecting the direction of boreholes
    • E21B7/061Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock

Description

July 16, 1940. J, HUGHES 2,207,920

EXPANDING FOOT PIECE FOR WHIPSTOCKS Filed 001;. 28, 1937 Patented July 16, 1940 UNITED STATES PATENT OFFICE 2,207,920 EXPANDING FOOT PIECE FOR WHIPSTOCKS Application October 28, 1937, Serial No. 171,465

1 Claim.

which may be lowered into the well bore anchored in position to cause deflection of the drill bit and thereafter the anchoring portion thereof released and the whipstock removed from the well bore along with the drill bit.

In directional drilling it is desirable to set the whipstock in the well bore in a predetermined and oriented position so as to direct the well bore in the desired manner. The practice has therefore grown up of inserting the drill bit and the whipstock into the well bore as a unit and orienting the whipstock so that the deflecting face will direct the drill bit in .the desired manner. It "is of course necessary to anchor the whipstock so that when the drill bit is released therefrom to perform the drilling operation that the whipstock may be securely anchored in position.

The present invention contemplates an expanding foot piece or anchor for the whipstock which can be set to hold the whipstock in the desired predetermined position and which may thereafter be released so that the whipstock may be readily removed.

7 Another object of the invention is to provide a wedge type anchor for removable whipstocks.

Still another object of the invention is to provide 'a telescoping foot piece for whipstocks so that it may be wedged in position in the well bore to anchor the whipstock;-

Still another object of the invention is to ofl'set a whipstock in a well bore by moving the base thereof. laterally in the direction in which the well bore is to be deflected.

Other and further objects of the invention will be readily apparent when the. following description is considered in connection with the accompanyingdrawing wherein:

Fig. 1 is a vertical sectional view of the whip stock assembled and ready for connection to the drill bit. I

Fig. 2 is a side elevation of the whipstock lowered into position and set in the well bore with the drill hit in-position to be released thererom.

Figs. 3 and are sections taken on the lines 33 and 44 of Fig. 1, respectively.

Fig. 5 is a bottom plan view of the whipstock showing "the arrangement of the teeth thereon to hold the whipstock in position. r The upper end of. the whipstock is of the general type shown in the patent to McVicar, 1,910,761, granted August 21, 1934, and includes a collar 2 which has a passage 3 therethrough to receive the drill stem 4. The drill stem has a (Cl. 255-1) The invention relates to a whipstock of. the type drill bit 5 connected thereto. A pin I is arranged to pass through the opening 8 in the collar 2 and in this manner the whipstock is fastened to the drill stem so that the assembly may be lowered into the well bore. This pin prevents relative rotation of the whipstock with respect to the drill stem so that if it is desired to orient the drill stem into position the operator is assured that the whipstock will be fixed in the" desired and predetermined direction when his orientation has been completed. Of course, the pin 1 is arranged to shear when a suflicient weight is placed upon the drill stem so that the drill bit may advance to cut away the side 10 of the well bore II.

The whipstock l2 includes the body portion l3 which has the inclined deflecting face ll thereon. This body I2 may be of any desired length or configuration and the angle of the deflecting face It may be varied for diiferent whipstocks. depending upon the angle of deflection which is desired.

In order that the whipstock maybe readily anchored in position when it reaches the desired elevation a foot piece has been connected thereto. This'foot piece has a toothed lower end 2! so'that it may bite into the bottom 22 of the well bore II and is of a diameter to flt into the well bore. This piece has a wedged or tapered face 23 thereon which is inclined with respect to the longitudinal axis of the whipstock and the foot piece. This face 23 may have a dovetail groove 25 therein which is arranged to flt with a dove-tail'tongue 26 which is provided on the lower tapered end 21 of the whipstock body l3. In this manner there may be relative sliding movement between the foot piece and the whip- .stock, and as seen in Fig. 2, when the foot piece is anchored against the well bore, pressure applied to the whipstock body l3 will cause it to slide along the face 23 to assume the expanded position there shown, in that the whipstock will be moved to the left so that the heel 30 thereof will wedge against the side of the well bore and at the same time the foot piece 20 will be wedged against'the opposite side 3| of the well bore. This sliding movement will'also move the base of the whipstock to the left so that the deflecting face It assumes a greater inclination than its normal angle of inclination with respect to its longitudinal axis of the well bore. In this manner the angle of. deflection may be increased somewhat.

A retainer pin 40 is carried by the foot piece 20 and as seen in Fig. 1 it projects into the dovetail groove 25 The tongue 26 on the lower end of the whipstock is cut away to provide a space 33 which terminates in the upper shoulder 34 and the lower shoulder 35. In this manner the relative sliding movement of the foot piece and the whipstock is limited. In the upper position the whipstock may be lowered into the well bore and in the lowermost position, as shown in Fig. 2 the foot piece limits the downward movement of the 30 from engagement with the well bore and to allow the foot piece to telescope along the bottom 21 of the whipstock to its retracted position. In

I this manner the whipstock is readily removable.

Anydesired means may be provided to prevent inadvertent telescoping of the foot piece until a predetermined pressure is exerted thereon.

Broadly, the invention contemplates a removable type of whipstock which can be lowered into the well bore and anchored into position and readily withdrawn by merely lifting up on the whipstock.

What is claimed is: I

A retrievable whipstock including a body, means at the top thereof to receive the drill stem and drill bit for lowering and retrieving the whipstock, a deflecting face on said body, a tapered bottom on said body inclined across from the back, a dovetailed tongue projecting from said bottom, a cutaway portion between the ends of said tongue to provide spaced stop shoulders, a

. foot piece, a top face thereon which is complementary to said bottom, a dovetail groove to receive said tongue to slide therein, and a stop pin projecting into said groove to be abutted'by said shoulders to limit the movement of the body relative to said foot piece and to suspend the foot 20 piece on the body during lowering and retrieving.

JAMES D. HUGHES.

US171465A 1937-10-28 1937-10-28 Expanding foot piece for whipstocks Expired - Lifetime US2207920A (en)

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Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506799A (en) * 1945-01-22 1950-05-09 Eastman Oil Well Survey Co Casing whipstock
US2642267A (en) * 1951-01-17 1953-06-16 John A Zublin Apparatus for initiating and drilling deviating curved bores from existing vertical wll bores
DE1025361B (en) * 1956-10-03 1958-03-06 Rhokana Corp Ltd Richtkoerper for correcting deviating from the vertical Bohrloechernzur vertical
US2950900A (en) * 1955-10-13 1960-08-30 Alfred C Wynes Redirecting deflected boreholes
US3421590A (en) * 1965-11-26 1969-01-14 Western Mining Corp Apparatus for deflecting a borehole
US4305462A (en) * 1978-02-16 1981-12-15 Boart International Limited Apparatus for positioning deflection wedges
US4397360A (en) * 1981-07-06 1983-08-09 Atlantic Richfield Company Method for forming drain holes from a cased well
US5012877A (en) * 1989-11-30 1991-05-07 Amoco Corporation Apparatus for deflecting a drill string
US5335737A (en) * 1992-11-19 1994-08-09 Smith International, Inc. Retrievable whipstock
US5361833A (en) * 1993-11-18 1994-11-08 Triumph*Lor, Inc. Bottom set, non-retrievable whipstock assembly
US5409060A (en) * 1993-09-10 1995-04-25 Weatherford U.S., Inc. Wellbore tool orientation
US5425417A (en) * 1993-09-10 1995-06-20 Weatherford U.S., Inc. Wellbore tool setting system
US5535822A (en) * 1994-09-08 1996-07-16 Enterra Corporation Apparatus for retrieving whipstock
US5727629A (en) * 1996-01-24 1998-03-17 Weatherford/Lamb, Inc. Wellbore milling guide and method
US5730221A (en) * 1996-07-15 1998-03-24 Halliburton Energy Services, Inc Methods of completing a subterranean well
US5785133A (en) * 1995-08-29 1998-07-28 Tiw Corporation Multiple lateral hydrocarbon recovery system and method
US5803176A (en) * 1996-01-24 1998-09-08 Weatherford/Lamb, Inc. Sidetracking operations
US5813465A (en) * 1996-07-15 1998-09-29 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US5826651A (en) * 1993-09-10 1998-10-27 Weatherford/Lamb, Inc. Wellbore single trip milling
US5833003A (en) * 1996-07-15 1998-11-10 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US5836387A (en) * 1993-09-10 1998-11-17 Weatherford/Lamb, Inc. System for securing an item in a tubular channel in a wellbore
US5862862A (en) * 1996-07-15 1999-01-26 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US5871046A (en) * 1994-01-25 1999-02-16 Halliburton Energy Services, Inc. Orienting, retrievable whipstock anchor
US6059037A (en) * 1996-07-15 2000-05-09 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6076602A (en) * 1996-07-15 2000-06-20 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6092601A (en) * 1996-07-15 2000-07-25 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6116344A (en) * 1996-07-15 2000-09-12 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6135206A (en) * 1996-07-15 2000-10-24 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6668945B2 (en) 2001-11-13 2003-12-30 Schlumberger Technology Corp. Method and apparatus for milling a window in a well casing or liner
US20040089443A1 (en) * 1996-05-03 2004-05-13 Smith International, Inc. One trip milling system
US6786282B2 (en) 2001-06-25 2004-09-07 Schlumberger Technology Corporation Milling apparatus and method for a well
US20060207771A1 (en) * 2005-03-04 2006-09-21 Rios Aristeo Iii Whipstock anchor
WO2010138877A1 (en) * 2009-05-29 2010-12-02 Varel International, Ind., L.P. Whipstock attachment to a fixed cutter drilling or milling bit
US20100307837A1 (en) * 2009-06-05 2010-12-09 Varel International, Ind., L.P. Casing bit and casing reamer designs
US20100319996A1 (en) * 2009-05-29 2010-12-23 Varel International, Ind., L.P. Milling cap for a polycrystalline diamond compact cutter
US20110209922A1 (en) * 2009-06-05 2011-09-01 Varel International Casing end tool
US8657036B2 (en) 2009-01-15 2014-02-25 Downhole Products Limited Tubing shoe

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506799A (en) * 1945-01-22 1950-05-09 Eastman Oil Well Survey Co Casing whipstock
US2642267A (en) * 1951-01-17 1953-06-16 John A Zublin Apparatus for initiating and drilling deviating curved bores from existing vertical wll bores
US2950900A (en) * 1955-10-13 1960-08-30 Alfred C Wynes Redirecting deflected boreholes
DE1025361B (en) * 1956-10-03 1958-03-06 Rhokana Corp Ltd Richtkoerper for correcting deviating from the vertical Bohrloechernzur vertical
US3421590A (en) * 1965-11-26 1969-01-14 Western Mining Corp Apparatus for deflecting a borehole
US4305462A (en) * 1978-02-16 1981-12-15 Boart International Limited Apparatus for positioning deflection wedges
US4397360A (en) * 1981-07-06 1983-08-09 Atlantic Richfield Company Method for forming drain holes from a cased well
US5012877A (en) * 1989-11-30 1991-05-07 Amoco Corporation Apparatus for deflecting a drill string
US5335737A (en) * 1992-11-19 1994-08-09 Smith International, Inc. Retrievable whipstock
US5427179A (en) * 1992-11-19 1995-06-27 Smith International, Inc. Retrievable whipstock
US6035939A (en) * 1993-09-10 2000-03-14 Weatherford/Lamb, Inc. Wellbore anchor system
US5425417A (en) * 1993-09-10 1995-06-20 Weatherford U.S., Inc. Wellbore tool setting system
US5826651A (en) * 1993-09-10 1998-10-27 Weatherford/Lamb, Inc. Wellbore single trip milling
US5452759A (en) * 1993-09-10 1995-09-26 Weatherford U.S., Inc. Whipstock system
US5409060A (en) * 1993-09-10 1995-04-25 Weatherford U.S., Inc. Wellbore tool orientation
US5836387A (en) * 1993-09-10 1998-11-17 Weatherford/Lamb, Inc. System for securing an item in a tubular channel in a wellbore
US5361833A (en) * 1993-11-18 1994-11-08 Triumph*Lor, Inc. Bottom set, non-retrievable whipstock assembly
US5871046A (en) * 1994-01-25 1999-02-16 Halliburton Energy Services, Inc. Orienting, retrievable whipstock anchor
US5535822A (en) * 1994-09-08 1996-07-16 Enterra Corporation Apparatus for retrieving whipstock
US5785133A (en) * 1995-08-29 1998-07-28 Tiw Corporation Multiple lateral hydrocarbon recovery system and method
US5803176A (en) * 1996-01-24 1998-09-08 Weatherford/Lamb, Inc. Sidetracking operations
US5806600A (en) * 1996-01-24 1998-09-15 Halford, Sr.; Hubert E. Whipstock system
US5727629A (en) * 1996-01-24 1998-03-17 Weatherford/Lamb, Inc. Wellbore milling guide and method
US5769166A (en) * 1996-01-24 1998-06-23 Weatherford/Lamb, Inc. Wellbore window milling method
US20040089443A1 (en) * 1996-05-03 2004-05-13 Smith International, Inc. One trip milling system
US7207401B2 (en) 1996-05-03 2007-04-24 Smith International, Inc. One trip milling system
US5833003A (en) * 1996-07-15 1998-11-10 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US5813465A (en) * 1996-07-15 1998-09-29 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6059037A (en) * 1996-07-15 2000-05-09 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6076602A (en) * 1996-07-15 2000-06-20 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6092601A (en) * 1996-07-15 2000-07-25 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6116344A (en) * 1996-07-15 2000-09-12 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6135206A (en) * 1996-07-15 2000-10-24 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US5730221A (en) * 1996-07-15 1998-03-24 Halliburton Energy Services, Inc Methods of completing a subterranean well
US5862862A (en) * 1996-07-15 1999-01-26 Halliburton Energy Services, Inc. Apparatus for completing a subterranean well and associated methods of using same
US6786282B2 (en) 2001-06-25 2004-09-07 Schlumberger Technology Corporation Milling apparatus and method for a well
US6668945B2 (en) 2001-11-13 2003-12-30 Schlumberger Technology Corp. Method and apparatus for milling a window in a well casing or liner
US20060207771A1 (en) * 2005-03-04 2006-09-21 Rios Aristeo Iii Whipstock anchor
US7963341B2 (en) * 2005-03-04 2011-06-21 Weatherford/Lamb, Inc. Apparatus and methods of use for a whipstock anchor
US8657036B2 (en) 2009-01-15 2014-02-25 Downhole Products Limited Tubing shoe
US8327944B2 (en) 2009-05-29 2012-12-11 Varel International, Ind., L.P. Whipstock attachment to a fixed cutter drilling or milling bit
US20100319997A1 (en) * 2009-05-29 2010-12-23 Varel International, Ind., L.P. Whipstock attachment to a fixed cutter drilling or milling bit
US20100319996A1 (en) * 2009-05-29 2010-12-23 Varel International, Ind., L.P. Milling cap for a polycrystalline diamond compact cutter
CN102395743B (en) 2009-05-29 2014-10-29 维拉国际工业有限公司 Connecting the fixed cutter drill bit or milling whipstock
CN102395743A (en) * 2009-05-29 2012-03-28 维拉国际工业有限公司 Whipstock attachment to a fixed cutter drilling or milling bit
US8517123B2 (en) 2009-05-29 2013-08-27 Varel International, Ind., L.P. Milling cap for a polycrystalline diamond compact cutter
WO2010138877A1 (en) * 2009-05-29 2010-12-02 Varel International, Ind., L.P. Whipstock attachment to a fixed cutter drilling or milling bit
US20100307837A1 (en) * 2009-06-05 2010-12-09 Varel International, Ind., L.P. Casing bit and casing reamer designs
US8561729B2 (en) 2009-06-05 2013-10-22 Varel International, Ind., L.P. Casing bit and casing reamer designs
US20110209922A1 (en) * 2009-06-05 2011-09-01 Varel International Casing end tool

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