Ruhle James L. (2535 E. Balfour Ave. Fullerton CA 92634)
인용정보
피인용 횟수 :
15인용 특허 :
2
초록▼
A low-cost retrievable light-weight high-speed thin-kerf reversible electrically-driven core-sampling method and apparatus that is independent of the weight of any drill pipe, drill collars, or any other heavy cylindrical or tubular conduit associated with the coring operation. The flow direction of
A low-cost retrievable light-weight high-speed thin-kerf reversible electrically-driven core-sampling method and apparatus that is independent of the weight of any drill pipe, drill collars, or any other heavy cylindrical or tubular conduit associated with the coring operation. The flow direction of electric current to the direct-current electric motor of the core-sampling assembly is automatically reversed at frequent intervals so as to cause corresponding reversals in the direction of rotation of its core bit, resulting in the cancellation of any lateral forces on the core bit produced by reactive torque created during the coring operation, since such forces are alternately applied in opposite directions, thus, eliminating any corehole deviation that, otherwise, might occur from the lateral force created by the reactive torque of a down-hole motor that is rotated in just one direction. Geologically-induced lateral forces on the core bit are also minimized because of the light weight and high speed of the reversible electrically-driven core-sampling assembly, which quickly decreases its angle with the vertical, should its trajectory deviate from the vertical.
대표청구항▼
The invention of a wire-line conveyed assembly of down-hole reversible electrically-driven high-speed thin-kerf coresampling apparatus comprising: a suitable wire-line conveyance system with connecting means suitable for the support and conveyance of said coresampling assembly through suitable cylin
The invention of a wire-line conveyed assembly of down-hole reversible electrically-driven high-speed thin-kerf coresampling apparatus comprising: a suitable wire-line conveyance system with connecting means suitable for the support and conveyance of said coresampling assembly through suitable cylindrical conduit to and from the bottom of a hole excavated in rock, and with electrical-connecting means suitable for the transmission of electric power to said core-sampling assembly, a suitable weighted unit, or sinker bar, through which passes said suitable wire-line conveyance system, and to which is rigidly affixed a plurality of guide fins arranged in a longitudinal manner on the exterior surface of said suitable weighted unit, or sinker bar, a suitable reversible direct-current electric motor rigidly affixed to the bottom of said suitable weighted unit, or sinker bar, to which is rigidly affixed a plurality of centralizing heat-sink fins, arranged in a longitudinal manner on the exterior surface of said suitable direct-current electric motor, with suitable electrical-connecting means between said suitable wire-line conveyance system and said suitable direct-current electric motor, and with a motor-case extension and a suitable splined rotational output shaft extending downward from the bottom of said suitable direct-current electric motor, said suitable splined rotational output shaft enveloped at the bottom of said suitable direct-current electric motor by suitable pressure-actuated sealing means so as to exclude outside fluid entry into said suitable direct-current electric motor, a suitable pressure-actuated annular cup seal enveloping said motor-case extension with its sealing lip facing up, and a plurality of side ports through said motorcase extension, said side ports situated above said suitable up-facing pressure-actuated annular cup seal, and a circumferential inward-facing shoulder rigidly affixed to the bottom of said motor-case extension, below which is situated a suitable bearing support, or circumferential thrust bearing, a suitable rotating outer cylindrical core barrel with suitable splined connecting means to said suitable splined rotational output shaft, containing a circumferential out-facing shoulder around its topmost perimeter, above which is situated suitable pressure-actuated sealing means, said suitable rotating outer cylindrical core barrel also containing a plurality of inclined fluid passageways at its top, below which is situated, at the lowermost extremity of said suitable cylindrical core barrel, a suitable core bit containing suitable water courses, a suitable nonrotating inner cylindrical core barrel containing at its topmost extremity suitable pressure-actuated sealing means, below which is situated a central and axial fluid passageway, said suitable nonrotating inner cylindrical core barrel also containing near its top a circumferential out-facing shoulder upon which is situated a suitable swivel bearing, and below which is situated a plurality of side ports and a suitable oneway check valve that allows fluid passage in an upward direction only, whereas near the lower extremity of said suitable nonrotating inner cylindrical core barrel is situated circumferentially near its bottom interior a suitable core-restraining device, or core catcher, a suitable hole-enlarging means, or hole opener, operating in either the linear-motion or rotational excavation mode, with said suitable hole enlarging means, or hole opener, containing a central and axial bore of sufficient diameter to allow the passage of said reversible electrically-driven core-sampling assembly, with said central and axial bore containing in its wall a plurality of longitudinally-arranged guide slots.
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이 특허에 인용된 특허 (2)
Desrochers Grard (Ville Mercier CAX) Dubreuil Louis (Montral CAX) Grumich Joseph (St-Lambert CAX), Continuous, undisturbed sampling by rotational boring in non-plastic granular tills.
Tchakarov, Borislav; Sagoo, Bahadur; Phan, Quan; Ashcraft, David, Rotary coring device and method for acquiring a sidewall core from an earth formation.
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