Slurry power bidirectional control hydraulic system for drilling and operation method thereof

A hydraulic system and two-way control technology, applied in drilling equipment and methods, drilling equipment, earthwork drilling and production, etc., can solve problems such as simple structure and achieve the effect of reducing demand

Active Publication Date: 2014-01-29
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no self-developed rotary steerable drilling tool with simple structure and less demand for the corresponding components of the downhole power system in China.

Method used

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  • Slurry power bidirectional control hydraulic system for drilling and operation method thereof
  • Slurry power bidirectional control hydraulic system for drilling and operation method thereof

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] Such as figure 1 As shown, the present invention comprises No. 1 power bladder device 1, No. 2 oil storage bladder device 2, No. 1 electromagnetic valve 3, No. 2 electromagnetic valve 4 and power piston cylinder 5.

[0015] The No. 1 power bladder device 1 includes a mud power bladder 6, the input port 7 of the mud power bladder 6 is open, and is used to inject mud into the mud power bladder 6, and a drill string is provided near the input port 7 of the mud power bladder 6. Pressure sensor, the outer sealing cover of mud power bladder 6 is provided with a metal shell 8, is filled with hydraulic oil 9 between metal shell 8 and mud power bladder 6, is connected with a hydraulic oil circuit 10 on the metal shell 8.

[0016] The No. 2 oil storage bladder device 2 includes an oil storage bladder 11 filled with hydraulic oil 12, the input port of th...

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Abstract

The invention relates to a slurry power bidirectional control hydraulic system for drilling and an operation method thereof, which are characterized in that the slurry power bidirectional control hydraulic system comprises a No. 1 power bladder device, a No. 2 oil storage bladder device, a No. 1 solenoid valve, a No. 2 solenoid valve and a power piston cylinder; the power piston cylinder is divided into a piston cavity and a piston rod cavity by a piston rod and a power piston; the piston cavity is connected with the No. 1 solenoid valve and the No. 2 solenoid valve in parallel through a hydraulic oil way; the No. 1 solenoid valve is also connected with the No. 1 power bladder device through the hydraulic oil way; the No. 2 solenoid valve is also connected with the No. 2 oil storage bladder device through the hydraulic oil way; the piston rod cavity is connected with the No. 1 power bladder device and the No. 2 oil storage bladder device in parallel through the hydraulic oil way; and a one-way valve is also arranged on the hydraulic oil way by which the piston rod cavity is connected with the No. 2 oil storage bladder device. The slurry power bidirectional control hydraulic system bidirectionally displaces and controls a wing rib guide mechanism through taking drilling circulating slurry as power, is simple in structure, is convenient to operate, has less required corresponding components of an underground power system and can be widely applied to a rotary guide drilling system.

Description

technical field [0001] The invention relates to a drilling tool hydraulic system and its operating method, in particular to a mud power bidirectional control hydraulic system used for a steering actuator in a rotary steerable drilling system and its operating method. Background technique [0002] Baker Hughes' AutoTrak rotary closed-loop drilling tool controls the wellbore trajectory by applying different pressures on the three ribs to form a steering force vector; Schlumberger's PowerDrive modulated full-rotary steering drilling tool is used to withstand high pressure The frequency and direction of a wing rib hitting the well wall to control the wellbore trajectory; Halliburton’s Geo-Pilot rotary steering automatic drilling tool forms eccentric displacement and drives the The shaft is bent to control the wellbore trajectory. At present, there is no self-developed rotary steerable drilling tool with simple structure and less demand for the corresponding components of the do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/08F15B1/02
Inventor 蒋世全姜伟傅鑫生李汉兴周建良刘恩惠牛海峰
Owner CHINA NAT OFFSHORE OIL CORP
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