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Title:
PUSH-THE-BIT ROTARY STEERABLE DEVICE AND METHOD FOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2016/050142
Kind Code:
A1
Abstract:
A push-the-bit rotary steerable device (100), comprising: a mandrel (12) provided with a central passage (12a); an outer sleeve (14) connected outside the mandrel (12) in a rotating sleeving way; a plurality of swinging type wing ribs (17) circumferentially arranged in the outer wall of the outer sleeve (14) at intervals; an actuation mechanism (18), used for controlling each swinging type wing rib (17) to swing; a plurality of detectors (15) circumferentially arranged in the outer wall of the outer sleeve at intervals, the detectors (15) being structured to detect the distances between the detectors (15) and a well wall in real time; and a controller (16), structured to determine, according to the detected distances, whether the actuation mechanism is required to actuate the swinging type wing ribs (17) to swing. Also disclosed is a method for using the push-the-bit rotary steerable device. According to the push-the-bit rotary steerable device, expanding and reducing well sections can be timely detected by the real-time detection of the detectors, so that the rotary steerable device can be prevented from steering at the well sections, the steering of the rotary steerable device can be prevented from being deviated from a preset direction, and the well inclination and the azimuth of a drilled inclined well are further ensured.

Inventors:
XIAO HONGBING (CN)
YANG JINZHOU (CN)
HAN LAIJU (CN)
LI ZUOHUI (CN)
ZHANG HAIHUA (CN)
TANG ZHIJUN (CN)
ZHOU YANJUN (CN)
Application Number:
PCT/CN2015/089714
Publication Date:
April 07, 2016
Filing Date:
September 16, 2015
Export Citation:
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Assignee:
SINOPEC SHENGLI PETROLEUM ENGINEERING CO LTD DRILLING TECHNOLOGY RES INST (CN)
International Classes:
E21B7/04; E21B7/06; E21B44/00
Foreign References:
CN103939017A2014-07-23
CN103437704A2013-12-11
CN1357675A2002-07-10
GB2230288A1990-10-17
US7631707B22009-12-15
CN204238856U2015-04-01
CN204266921U2015-04-15
Attorney, Agent or Firm:
DONGYING SHUANGQIAO PATENT AGENT CO., LTD (CN)
东营双桥专利代理有限责任公司 (CN)
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