초록 ▼

A steering assembly includes upper and lower tubular housings connected by a universal joint. An angle cam is disposed on the end of the lower housing and projects into the upper housing. A plurality of wedge members extend axially from the upper housing and into engagement with the angle cam. Drive

A steering assembly includes upper and lower tubular housings connected by a universal joint. An angle cam is disposed on the end of the lower housing and projects into the upper housing. A plurality of wedge members extend axially from the upper housing and into engagement with the angle cam. Drive trains are connected to the wedge members to move the wedge members toward and away from the angle cam so as to pivot the lower housing at the universal joint and change the angle and azimuth of the lower housing with respect to the upper housing. The lower housing is connected to a bearing pack supporting a drill bit such that upon changing the angle and azimuth of the lower housing, the direction of the drilling of the drill bit is also changed. The steering assembly being connected to composite tubing having conductors in the wall thereof for conducting data and commands between the steering assembly and a processor at the surface and for providing power to the steering assembly. Data on the position of the bit is transmitted to a processor which determines the direction of drilling and selectively transmits commands to the steering assembly to change the bend angle and direction of the drilling of the bit.

대표청구항 ▼

A steering assembly includes upper and lower tubular housings connected by a universal joint. An angle cam is disposed on the end of the lower housing and projects into the upper housing. A plurality of wedge members extend axially from the upper housing and into engagement with the angle cam. Drive

A steering assembly includes upper and lower tubular housings connected by a universal joint. An angle cam is disposed on the end of the lower housing and projects into the upper housing. A plurality of wedge members extend axially from the upper housing and into engagement with the angle cam. Drive trains are connected to the wedge members to move the wedge members toward and away from the angle cam so as to pivot the lower housing at the universal joint and change the angle and azimuth of the lower housing with respect to the upper housing. The lower housing is connected to a bearing pack supporting a drill bit such that upon changing the angle and azimuth of the lower housing, the direction of the drilling of the drill bit is also changed. The steering assembly being connected to composite tubing having conductors in the wall thereof for conducting data and commands between the steering assembly and a processor at the surface and for providing power to the steering assembly. Data on the position of the bit is transmitted to a processor which determines the direction of drilling and selectively transmits commands to the steering assembly to change the bend angle and direction of the drilling of the bit. 4043393, 19770800, Fisher et al.; US-4049053, 19770900, Fisher et al.; US-4057293, 19771100, Garrett; US-4067390, 19780100, Camacho et al.; US-4069868, 19780100, Terry; US-4076761, 19780200, Chang et al.; US-4084637, 19780400, Todd; US-4087130, 19780500, Garrett; US-4089372, 19780500, Terry; US-4089374, 19780500, Terry; US-4093025, 19780600, Terry; US-4093026, 19780600, Ridley; US-4096163, 19780600, Chang et al.; US-4114688, 19780900, Terry; US-4130575, 19781200, Jorn; US-4133825, 19790100, Stroud et al.; US-4138442, 19790200, Chang et al.; US-4144935, 19790300, Bridges et al.; US-RE30019, 19790600, Lindquist; US-4183405, 19800100, Magnie; US-4186801, 19800200, Madgavkar et al.; US-4197911, 19800400, Anada; US-4228854, 19801000, Sacuta; US-4243101, 19810100, Grupping; US-4250230, 19810200, Terry; US-4250962, 19810200, Madgavkar et al.; US-4252191, 19810200, Pusch et al.; US-4273188, 19810600, Vogel et al.; US-4274487, 19810600, Hollingsworth et al.; US-4277416, 19810700, Grant; US-RE30738, 19810900, Bridges et al.; US-4299086, 19811100, Madgavkar et al.; US-4299285, 19811100, Tsai et al.; US-4306621, 19811200, Boyd et al.; US-4324292, 19820400, Jacobs et al.; US-4344483, 19820800, Fisher et al.; US-4353418, 19821000, Hoekstra et al.; US-4359687, 19821100, Vinegar et al.; US-4363361, 19821200, Madgavkar et al.; US-4366668, 19830100, Madgavkar et al.; US-4378048, 19830300, Madgavkar et al.; US-4381641, 19830500, Madgavkar et al.; US-4384613, 19830500, Owen et al.; US-4396062, 19830800, Iskander; US-4397732, 19830800, Hoover et al.; US-4398151, 19830800, Vinegar et al.; US-4407973, 19831000, van Dijk et al.; US-4409090, 19831000, Hanson et al.; US-4412124, 19831000, Kobayashi; US-4423311, 19831200, Varney, Sr.; US-4444255, 19840400, Geoffrey et al.; US-4444258, 19840400, Kalmar; US-4448251, 19840500, Stine; US-4448252, 19840500, Stoddard et al.; US-4457365, 19840700, Kasevich et al.; US-4463807, 19840800, Stoddard et al.; US-4476927, 19841000, Riggs; US-4485869, 19841200, Sresty et al.; US-4489782, 19841200, Perkins; US-4501445, 19850200, Gregoli; US-4508170, 19850400, Littmann; US-4524113, 19850600, Lesieur; US-4524826, 19850600, Savage; US-4530401, 19850700, Hartman et al.; US-4537252, 19850800, Puri; US-4540882, 19850900, Vinegar et al.; US-4542648, 19850900, Vinegar et al.; US-4549396, 19851000, Garwood et al.; US-4570715, 19860200, Van Meurs et al.; US-4571491, 19860200, Vinegar et al.; US-4572299, 19860200, Vanegmond et al.; US-4573530, 19860300, Audeh et al.; US-4576231, 19860300, Dowling et al.; US-4583046, 19860400, Vinegar et al.; US-4583242, 19860400, Vinegar et al.; US-4592423, 19860600, Savage et al.; US-4594468, 19860600, Minderhoud et al.; US-4597441, 19860700, Ware et al.; US-4605680, 19860800, Beuther et al.; US-4608818, 19860900, Goebel et al.; US-4613754, 19860900, Vinegar et al.; US-4616705, 19861000, Stegemeier et al.; US-4626665, 19861200, Fort, III; US-4635197, 19870100, Vinegar et al.; US-4637464, 19870100, Forgac et al.; US-4640352, 19870200, Vanmeurs et al.; US-4644283, 19870200, Vinegar et al.; US-4651825, 19870300, Wilson; US-4658215, 19870400, Vinegar et al.; US-4662438, 19870500, Taflove et al.; US-4662439, 19870500, Puri; US-4662443, 19870500, Puri et al.; US-4663711, 19870500, Vinegar et al.; US-4671102, 19870600, Vinegar et al.; US-4691771, 19870900, Ware et al.; US-4694907, 19870900, Stahl et al.; US-4704514, 19871100, Van Edmond et al.; US-4716960, 19880100, Eastlund et al.; US-4719423, 19880100, Vinegar et al.; US-4