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公开(公告)号：US10995554B2
公开(公告)日：2021-05-04
申请号：US16477643
申请日：2018-01-12
发明人： Zhiguo Ren , Xu Fu , Stewart Blake Brazil , Chengbao Wang
摘要： An auto-adjustable directional drilling apparatus comprises: a drive-shaft housing; a drill collar coupled to the drive-shaft housing; a drive shaft passing through the drive-shaft housing and the drill collar; an active stabilizer fixed to the drive-shaft housing and movably coupled to the drill collar; a sliding assembly comprising a base support fixed to the drill collar and a sliding base coupled to the drive-shaft housing, wherein the base support defines a slide way and the sliding base is slidably disposed in the slide way; and an actuating module coupled to the sliding base to drive the sliding base to slide along the slide way. An auto-adjustable directional drilling method is also disclosed.
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公开(公告)号：US10018044B2
公开(公告)日：2018-07-10
申请号：US14614705
申请日：2015-02-05
发明人： Lishun Hu , Junli Xue , Ming Su , Fengcheng Sun , Jie Zhang , Zhiguo Ren
摘要： A power integrated system includes a gas storage unit, a gas driven generator, a power bus, a drilling rig, oil/gas production equipment, and a gas reformer. The gas storage unit is used for storing natural gas. The gas driven generator is used for generating electric power based on the stored natural gas. The power bus is used for receiving the electric power generated by the gas driven generator. The drilling rig is used for being driven by the electric power from the power bus. The oil/gas production equipment is used for being driven by the electric power from the power bus and for generating associated gas. The gas reformer is used for reforming the associated gas and supplying the reformed gas to the gas storage unit.
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公开(公告)号：US11028646B2
公开(公告)日：2021-06-08
申请号：US16488976
申请日：2018-02-23
发明人： Zhiguo Ren , Xu Fu , Stewart Blake Brazil , Chengbao Wang
摘要： A rotary steerable drilling system includes a collar, a drill bit, and a bit shaft connecting the drill bit to the collar. The bit shaft is coupled to the collar through a joint capable of transmitting a torque from the collar to the bit shaft and is swingable with respect to the collar around the joint. The system, further includes first eccentric wheel and second eccentric wheel coupled to the bit shaft and rotatable to swing the bit shaft with respect to the collar around the joint to change a drilling direction, a controller for controlling the first eccentric wheel and second eccentric wheel to harmoniously rotate such that the swing of the bit shaft substantially compensates rotation of the bit shaft, and an active stabilizer mounted on the bit shaft and capable of pushing the bit shaft to deviate to cause a lateral displacement and a tilt angle of the drill bit.
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公开(公告)号：US11105155B2
公开(公告)日：2021-08-31
申请号：US16476164
申请日：2018-01-05
发明人： Zhiguo Ren , Xu Fu , Chengbao Wang , Stewart Blake Brazil
IPC分类号： E21B7/06 , E21B44/04 , E21B47/022 , E21B17/10 , E21B47/12
摘要： A drilling system includes a rotatable string for connecting with a bit for drilling a borehole, and an active stabilizer which includes a body having an outer surface for contacting a wall of the borehole, and a plurality of actuators connecting the body and the string and capable of driving the string to deviate away from a center of the borehole with a displacement to change a drilling direction. The drilling system further includes a module for measuring direction parameters including at least one of a declination angle and an azimuth angle of the borehole, a module for measuring imbalance parameters including at least one of a lateral force, a bending moment and a torque near the drill bit, and a controller including a calculator for calculating an adjustment needed for the displacement, based on the measured parameters and expected values of these parameters.
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