[특허]System for in situ replacement of cutting means for a ground drill

[미국특허] System for in situ replacement of cutting means for a ground drill 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-010/64
출원번호	US-0433402 (1995-07-07)
우선권정보	AU-0009407 (1993-06-16); AU-0004158 (1994-03-02); AU-0004159 (1994-03-02)
국제출원번호	PCT/AU94/00322 (1994-06-15)
§371/§102 date	19950707 (19950707)
국제공개번호	WO-9429567 (1994-12-22)
발명자 / 주소	McLeod Gavin Thomas (Bullcreek AUX) Egan Matthew Vance (Leeming AUX)
출원인 / 주소	Down Hole Technologies Pty Ltd. (Myaree AUX 03)
인용정보	피인용 횟수 : 85 인용 특허 : 7

초록 ▼

A retractable drill bit system (10) comprises a drive sub (18) which is adapted for connection to a lower end of a drill (12), a tool (20) for installing and retractable drill bit segments (22) from the drive sub (18); and an insert (24) for selectively locking the bit segments (22) to an end of the drive sub (18) and releasing the bit segments (22). A plurality of recesses (5B) are formed about an inner circumferential wall at one end of the drive sub (18) and a landing seat (32) formed about the inner wall upstream of the recesses (58). The area of the interior wall between the landing seat (32) and recesses (58) is profiled with a series of tapered and level surfaces. The tool (20) includes a slidable cradle (176) extending from one end about which the bit segments (22) are held during installation and retrieval. The bit segments (22) being held in place about the cradle by an elastic band (198). The insert (24) is provided at one end with a series of keyways (218) which locate over the bit segments (22) when the bit segments are locked to the drive sub (18). The insert (24) is always retained within the drive sub (18). Bit segments (22) are carried by the tool (20) to the drive sub (18) and locked in place by the insert (24). The tool (20) can then be withdrawn and the drill (12) operated in the normal manner. To receive the bit segments (22), the tool (20) is relowered into the drill and then withdrawn a short distance to retract the insert (24) so that the bit segments (22) collapse back onto the cradle (176) and can then be withdrawn from the drill (12).

대표청구항 ▼

A system for in situ replacement of cutting means of a ground drill where the cutting means is composed of a plurality of segments, said system comprising: a tubular member adapted for connection to a lower end of said ground drill, said tubular member provided with seating means formed circumferentially about an inner wall of said tubular member for seating said segments in a cutting position in which said segments can contact the ground; a substantially cylindrical insert retained in said member, said insert being moveable between an installation position in which said insert locates said segments in said seating means and retains said segments in said cutting position between said insert and said member and, a retrieval position in which said insert is retracted to release said segments from between said insert and said member whereby said segments can be retrieved for replacement.

이 특허에 인용된 특허 (7) 인용/피인용 타임라인 분석

Mayfield Walter G. (#8 Farnham Park Houston TX 77024), Downhole retrievable drill bit.
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Bowles Raymond Ernest (West Preston AU), Drill.
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Leturno Richard E. (Plano TX), Drilling with casing and retrievable drill bit.
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Leggett Henry H. (Singapore SGX), Mechanical latching device operated by dead weight and tension.
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Tucker John D. (Cedar Falls IA) Cozad Ronald E. (Waterloo IA) Kaiser Robert A. (Palmer IA), Retractable bit system.
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Nenkov Nikolay D. (Sofia BGX), Retractable core drill bit.
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Henson Randy H. (Plano TX) Baillie Lloyd A. (Plano TX), Retrievable bit and eccentric reamer assembly.
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이 특허를 인용한 특허 (85) 인용/피인용 타임라인 분석

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Vail, III,William Banning, Apparatus and method for completing oil and gas wells.
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Galloway, Gregory G.; Brunnert, David J., Apparatus and method for drilling with casing.
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Pietras,Bernd Georg, Apparatus and method for facilitating the connection of tubulars using a top drive.
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Galloway, Gregory G.; Brunnert, David J., Apparatus and method of drilling with casing.
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Galloway,Gregory G.; Brunnert,David J., Apparatus and method of drilling with casing.
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Giroux,Richard L.; Galloway,Gregory G.; Le,Tuong Thanh; Jackson,Raymond H.; Nazzal,Gregory R.; Swarr,James C.; Brunnert,David J.; Beasley,William M.; Lirette,Brent J.; Odell,Albert C.; Terry,Jim; McKay,Dave; Alkhatib,Samir; Wardley,Mike, Apparatus and methods for drilling a wellbore using casing.
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Treviranus, Joachim; Kreuger, Sven, Apparatus and methods for drilling wellbores that utilize a detachable reamer.
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Haugen, David M.; Tilton, Frederick T., Apparatus and methods for drilling with casing.
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Haugen,David M.; Tilton,Frederick T., Apparatus and methods for drilling with casing.
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Pietras,Bernd Georg, Apparatus and methods for facilitating the connection of tubulars using a top drive.
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Haugen,David M., Apparatus and methods for tubular makeup interlock.
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Giroux,Richard Lee; Odell, II,Albert C.; Thompson,Gary; Haugen,David; Le,Tuong Thanh; Dugal,Robert; Heidecke,Karsten; Shahin,David, Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly.
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Pietras,Bernd Georg, Apparatus for connecting tublars using a top drive.
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Pietras,Bernd Georg, Apparatus for facilitating the connection of tubulars using a top drive.
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Simpson,Neil Andrew Abercrombie; Harrall,Simon John, Bore lining and drilling.
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Pietras,Bernd Georg; Bailey,Thomas F.; Vuyk, Jr.,Adrian; Wilson,Carl J., Casing running and drilling system.
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Pietras,Bernd Georg, Casing running head.
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Drenth, Christopher L., Core barrel assemblies with braking devices.
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Drenth, Christopher L., Core barrel head assembly with axial groove.
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Drenth, Christopher L., Core barrel head assembly with tapered design.
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Drenth, Christopher L., Core barrel latch body.
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Drenth, Christopher L., Core barrel latch body with axial grooves.
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Drenth, Christopher L., Core barrel retracting case.
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Drenth, Christopher L., Core barrel sleeve with axial grooves.
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Drenth, Christopher L., Core drilling tools with external fluid pathways.
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Drenth, Christopher L., Core drilling tools with external fluid pathways.
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Drenth, Christopher L.; Iondov, George; Ibrahim, George, Core drilling tools with retractably lockable driven latch mechanisms.
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Drenth, Christopher L.; Iondov, George; Ibrahim, George, Core drilling tools with retractably lockable driven latch mechanisms.
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Tulloch,Rory McCrae, Expandable apparatus for drift and reaming borehole.
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Gledhill, Andrew D.; Fuller, Mark S.; Dalrymple, Kenneth J., Expandable bit with secondary release device.
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Carter,Thurman B.; Brunnert,David J.; Haugen,David M., Full bore lined wellbores.
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Drenth, Chris Lloyd, High productivity core drilling system.
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Drenth, Christopher L., High productivity core drilling system.
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Drenth, Christopher L., Latch body.
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Drenth, Christopher L., Latch body.
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Drenth, Christopher L., Latch body.
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Vail, III,William Banning, Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells.
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Pietras,Bernd Georg, Method and apparatus for connecting tubulars using a top drive.
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McDaniel,Gary; Thomas, Jr.,Allen Keith; Cummins,Patrick D.; Hill,Troy F.; Cummins,Tracy J.; Boutwell, Jr.,Doyle Frederic; Hayes,Michael, Method and apparatus for handling wellbore tubulars.
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Glaser,Mark C.; Allen,Jack R.; Ferguson,Gerald M.; Alvarez,Ralph A., Method of drilling and completing multiple wellbores inside a single caisson.
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Vail, III,William Banning, Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells.
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Vail, III,William Banning, Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells.
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Vail, III,William Banning, Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells.
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Vail, III,William Banning, Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells.
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Pietras, Bernd Georg, Methods and apparatus for connecting tubulars using a top drive.
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Giroux,Richard L.; Galloway,Gregory G.; Brunnert,David J.; Maguire,Patrick G.; Le,Tuong Thanh; Odell, II,Albert C.; Haugen,David M.; Tilton,Frederick T.; Lirette,Brent J.; Murray,Mark; Moyes,Peter Barnes, Methods and apparatus for wellbore construction and completion.
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Lirette, Brent J.; Brunnert, David J., Methods and apparatus for wellbore construction and completion.
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Boyle, John, Vessel for well intervention.
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Tilton,Frederick T.; Brunnert,David J., Wired casing.
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[미국특허] System for in situ replacement of cutting means for a ground drill 원문보기

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[미국특허] System for in situ replacement of cutting means for a ground drill 원문보기

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