[특허]Downhole force generator

Downhole force generator 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-031/00 E21B-019/22 E21B-023/00
출원번호	US-0574815 (1990-08-30)
발명자 / 주소	Kilgore Marion D. (Dallas TX)
출원인 / 주소	Otis Engineering Corporation (Dallas TX 02)
인용정보	피인용 횟수 : 40 인용 특허 : 0

초록 ▼

A hydraulic well tool for running into a flow conduit of a well on a handling string, such as reeled tubing or jointed pipe, for generating and applying an axial force to an object in the well, the well tool including an anchoring mechanism actuatable by fluid pressure in the handling string for anchoring the well tool in the flow conduit, this well tool further including a piston/cylinder arrangement also actuatable by fluid pressure in the flow conduit for moving the aforementioned object. The object may be a well tool, a sliding sleeve, a fish, or other well tool. The hydraulic well tool may be provided with a suitable device to permit increasing the pressure in the handling string for actuation of the anchoring mechanism and the piston/cylinder arrangement. Devices suitable for such purpose include a flow restrictor, ball and seat, velocity check valves, plugs, or the like devices. The displacement of such object is brought about hydraulically while the well tool is anchored in the flow conduit and without axially stressing the handling string. The anchoring mechanism includes piston type anchor members each formed with a sinusoidal seal ring recess at its inner end for increasing the stroke of the anchor members, and with a recess running across the inner face of the anchor member in a direction parallel to the longitudinal axis of the well tool to avoid obstructing the longitudinal body bore.

대표청구항 ▼

A well tool for generating and applying an upward axial force to an object at a subsurface location in a well flow conductor, comprising: (a) body means, including: (i) an upper body member having a longitudinal bore extending therethrough and having means at its upper end for attachment to a handling string, (ii) pressure responsive means near the upper end of said upper body member for anchoring the same in said well flow conductor, (iii) piston means on said upper body member a spaced distance below said anchoring means, (iv) a lower body member having a longitudinal bore extending therethrough, an upper portion of said bore being enlarged and in which said piston means of said upper body member is reciprocable, said piston means providing in said cylinder means a power chamber and an exhaust chamber, including seal means for sealing between said piston means and said cylinder means and between said upper body member and said lower body member at both the upper and lower ends of said cylinder means, (v) means at the lower end of said lower body member for attachment thereto of an operating tool, (vi) means on said upper body member for conducting power fluid from said bore thereof into said power chamber, (vii) means on said lower body means for conducting fluids from said exhaust chamber, (viii) means on said piston and in said cylinder for limiting movement of said piston therein, and (ix) means for closing said bore of said lower body member below said piston means to permit building of fluid pressure thereabove for actuating said anchoring means and for actuation of said well tool, said lower body being provided with a seat in its lower portion, which seat is engageable by a ball closure member for permitting pressure to be built thereabove for actuation of said anchor means and said piston/cylinder means, and a spring associated with said seat for holding said ball closure member off said seat until the downward flow of fluids past said ball closure member is sufficient to overcome said spring and cause seating of said ball closure member.

이 특허를 인용한 특허 (40)

Appleton Robert Patrick,GBX, Actuating ball.
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Leo D. Hudson ; Jefferey D. Herndon, Apparatus and method for hanging tubulars in wells.
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Mackenzie,Alan, Apparatus and method for radially expanding a tubular member.
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Mackenzie, Alan, Apparatus and methods for radially expanding a tubular member.
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Heijnen, Wilhelmus Hubertus Paulus Maria, Apparatus for sealing off a part of a wall in a section drilled into an earth formation, and a method for applying the apparatus.
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Head, Philip, Coiled tubing deployed ESP.
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Grant E. E. George CA; Stephen M. Begg CA, Deviated borehole drilling assembly.
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Heijnen, Wilhelmus Hubertus Paulus Maria; Brink, David Ian, Device and a system and a method of moving in a tubular channel.
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Heijnen, Wilhelmus Hubertus Paulus Maria; Peters, Robert Bouke, Downhole apparatus.
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Angman,Per G.; Hughes,John, Downhole axial force generating tool.
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Obrejanu, Marcel, Downhole force generator.
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Obrejanu, Marcel, Downhole force generator.
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Clemens,Jack G.; Moore,Darrell W.; Campbell,Michael, Downhole force generator and method for use of same.
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Gano John C., Downhole hydraulic power source.
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Clemens,Jack G.; Foster,Jerry C.; Thurman,Robert L., Downhole impact generator and method for use of same.
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Gordon,Scott Alistair; Chandler,Tom; Waddington,John; Dove,Johnny Mack; Vidrine,William L.; Hall,Glen; Clemens,Jack Gammill, Downhole perforator assembly and method for use of same.
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Telfer, George, Downhole tool and method.
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Watson, Brock W.; Moeller, Daniel K., Entry guide formation on a well liner hanger.
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Moeller, Daniel Keith, Expandable wellbore liner system.
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Sherman, Scott, Fracturing tool anchor.
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Mireles ; Jr. Hector H. (Spring TX) Constantine ; Jr. Jesse J. (Kingwood TX), Hydraulic power stroker for shifting of sliding sleeves.
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Braddick, Britt O., Hydraulically powered fishing tool and method.
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Mouton, David E.; Amezaga, Federico; Hollingsworth, Jim, Hydrostatic tubular lifting system.
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Hughes, John; Thomas, John Wilson, Low pressure-set packer.
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Kilgore Marion D., Method and apparatus for controlling fluid flow within wellbore with selectively set and unset packer assembly.
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Kilgore, Marion D., Method and apparatus for controlling fluid flow within wellbore with selectively set and unset packer assembly.
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Bailey Gary L. ; Hudson Leo D. ; Warren Sherman R. ; Woods Ross S., Method and apparatus for hanging tubulars in wells.
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Heijnen, Wilhelmus Hubertus Paulus Maria; Peters, Robert Bouke; Brink, David Ian, Method and system for well and reservoir management in open hole completions as well as method and system for producing crude oil.
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Redlinger, Thomas M.; Vreeland, Christopher M., Method for jarring with a downhole pulling tool.
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Kilgore,Marion D.; Patterson,Daniel L., Packer releasing methods.
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Myhre Morton,NOX, Pressure-boost device for downhole tools.
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Myhre, Morten, Pressure-boost device for downhole tools.
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Brisco, David P.; Watson, Brock W.; Echols, Ralph H., Running tool for expandable liner hanger and associated methods.
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Shy Perry C., Selectively locking locator.
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Watson, Brock W., Setting tool for expandable liner hanger and associated methods.
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Watson, Brock W., Setting tool for expandable liner hanger and associated methods.
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Watson, Brock W., Setting tool for expandable liner hanger and associated methods.
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Henderson, William David; Cavender, Travis Wayne, Upper zone isolation tool for intelligent well completions.
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Gano, John C.; Schwendemann, Kenneth L.; Towers, Darrin N.; Echols, Ralph Harvey; Shy, Perry Carter, Wear-resistant, variable diameter expansion tool and expansion methods.
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Gano, John C.; Schwendemann, Kenneth L.; Towers, Darrin N.; Echols, Ralph Harvey; Shy, Perry Carter, Wear-resistant, variable diameter expansion tool and expansion methods.
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