Eight-edged turnover test device
A test device, the technology of octagonal frame, applied in the field of octagonal turning test device, can solve the problems of difficult power drilling tools, increased difficulty of bottomhole tool face control, inability to realize large displacement extension of borehole, etc., to ensure processing , The test results are accurate and reliable, and the effect of ensuring the accuracy of the measurement
Active Publication Date: 2016-04-20
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology
However, the use of the existing power steering technology is not conducive to the selection of the drill bit. The existence of large friction in the "sliding" mode makes it more difficult to control the bottom hole tool face, and it is impossible to achieve large displacement extension of the borehole and accurate borehole trajectory. Control, especially for highly deviated wells and extended reach wells, it is difficult or even impossible for conventional power drilling tools to meet the needs. To complete complex well trajectory and truly realize downhole closed-loop control, it is necessary to develop a more flexible and fully adjustable Automated intelligent drilling system
Method used
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[0017] The present invention will be described in further detail below in conjunction with the drawings.
[0018] As attached figure 1 , 2 As shown in and 3, the octagonal inversion test device is composed of an octagonal frame 1 and a sleeve 2.
[0019] Reference figure 2 , The octagonal frame 1 is provided with eight edge faces 3 and two end faces 4, the angle between adjacent edge faces is 135o, the two end faces 4 are parallel to each other and perpendicular to the edge face 3, and two pairs of relatively parallel edge faces 3 are provided There is a sleeve positioning hole 5. Four bosses 6 are installed on each edge surface 3 to provide a plane reference for precise machining. On each end face 4, 8 bosses 6 are installed to provide a plane reference for precise machining.
[0020] Reference image 3 The sleeve 2 has a two-stage structure and adopts a screw thread and a top block 9 locking method. The sleeve 2 is vertically installed in the sleeve positioning holes 5 of a pa...
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The invention discloses an eight-edged turnover test device, comprising an eight-edged frame and a sleeve, wherein the eight-edged frame is provided with eight edge planes and two end surfaces, an included angle of adjacent edge planes is 135 degrees, the two end surfaces are parallel to each other and perpendicular to the edge planes, and at least one pair of opposing parallel edge planes are provided with sleeve positioning holes; one end of the sleeve is provided with an instrument chamber; the sleeve and the sleeve positioning holes in the eight-edged frame are in coaxial insertion fit, and both the eight-edged frame and the sleeve are made of nonmagnetic or weakly magnetic material. The device made of the nonmagnetic or weakly magnetic material is free of electromagnetic interference upon a sensor sub to be tested, and can provide a standard angular position for an automated intelligent drilling system sensor sub, acquire a sensor sub angular measurement error and thus calibrate and correct a control system measured sub error.
Description
Technical field [0001] The invention relates to the field of testing devices for drilling measuring instruments, in particular to an automatic and intelligent drilling system sensor subsection used for calibration and testing of automatic vertical drilling systems, rotary steering drilling systems, etc. in petroleum drilling engineering, providing sensor subsection standards The angle position is an eight-sided flipping test device that obtains the angle measurement error of the sensor sub-section, thereby calibrating and correcting the measurement error of the control system. Background technique [0002] Changes in the demand for drilling methods have led to continuous improvement of drilling tools. As special process wells such as extended-reach horizontal wells, long horizontal horizontal wells and three-dimensional multi-target wells have become important means to improve oil and gas recovery in the development of oil and gas fields, domestic Researches on advanced automatio...
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Inventor 王义峰孙峰刘文庭陈威高丽萍
Owner CHINA PETROCHEMICAL CORP