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Mechanical survey system based on drilling fluid circulation

A drilling fluid circulation and mechanical technology, applied in the field of drilling, can solve the problems of no research reports, etc., and achieve the effects of avoiding large construction errors, low use cost, and easy correction and treatment

Pending Publication Date: 2019-09-17
自贡中兴耐磨新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent "self-adjusting mechanical inclinometer while drilling" declared by the East China Petroleum Geology Bureau of the former Ministry of Geology and Mineral Resources in 1986 involves mechanical inclinometers, but no products have come out, and there are no related research reports.

Method used

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  • Mechanical survey system based on drilling fluid circulation
  • Mechanical survey system based on drilling fluid circulation
  • Mechanical survey system based on drilling fluid circulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] like figure 1As shown, in this embodiment, a mechanical inclinometer system based on drilling fluid circulation includes a pump 1, a flow pipe 2, a drill pipe 4, a drill collar 9, and a mechanical inclinometer that are sequentially connected in accordance with the drilling fluid flow direction. 5 and a drill bit 6, the inclinometer 5 is provided with a pulse generating device 51 for converting the measured information into a pulse signal, and the flow pipe 2 is communicated with a device for detecting the pulse signal generated by the pulse generating device 51. The sensor 3 is electrically connected to a signal processing system 7, and the drill rod 4 is connected to a support system.

[0035] The inclinometer 5 adopts a mechanical structure. During the drilling process, it can realize the measurement while drilling to detect the downhole parameters. It does not need to take out the drill bit, and it will not affect the work of the drill bit and cause the phenomenon of...

Embodiment 2

[0040] like image 3 , Figure 4 As shown, on the basis of the above embodiments, in this embodiment, the pulse generating device 51 includes a pulse ring 511 communicated with the casing 56, several joints arranged in the pulse ring 511 and coaxial with the pulse ring 511 The flow ring 512, the pulse rod 515 arranged in the pulse ring 511, the pulse rod 5141 located in the pulse ring 511 and slidingly connected with the pulse rod 515, the pulse valve 514 connected with the pulse rod 5141, and the middle part of the throttle ring 512 It is an orifice 513 coaxial with the pulse ring 511 . The pulse generating device 51 is provided with a connecting hole 516 communicating with the drill collar 9.

[0041] When the drilling fluid pumped by the pump 1 enters the pulse ring 511, the pulse valve 514 moves downward under the action of the drilling fluid. When the pulse valve 514 passes through the orifice 513, the flow area of ​​the drilling fluid changes from large to small. beco...

Embodiment 3

[0057] like Figure 9 As shown, on the basis of the above embodiments, in this embodiment, the damping device 54 includes a damping outer cylinder 541 arranged in the housing 56 and having a through hole, and is slidably arranged on the damping outer cylinder 541 close to the inclinometer mechanism. The damping pulse rod 543 at one end of the mechanism 53, the damping valve 542 arranged in the damping outer cylinder 541, and the damping piston 544 slidingly arranged in the damping outer cylinder 541, the damping piston 544 and the damping pulse rod 543 are respectively located at the damping valve 542 both ends.

[0058] The damping outer cylinder 541 is filled with lubricating oil, and the damping pulse rod 543 tends to move downward under the impact force of the drilling fluid. Since the hydraulic oil is incompressible, the pressure of the upper cavity in the damping outer cylinder 541 rises. When the pressure difference between the upper cavity and the lower cavity is suff...

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Abstract

The invention discloses a mechanical survey system based on drilling fluid circulation. The mechanical survey system comprises a pump, a flow tube, a drill pipe, a drill collar, a mechanical survey instrument and a drill bit which sequentially communicate in the circulation direction of drilling fluid; a pulse generating device for converting the measured information into a pulse signal is disposed in the survey instrument, and the flow tube is provided with a sensor for detecting the pulse signal generated by the pulse generating device in a communication mode, and the sensor is electrically connected with a signal processing system. The drill pipe is connected with a support system. The mechanical survey system has the beneficial effects that according to the scheme, the function of wireless survey while drilling can be realized, the parameters of the drilling can be measured without affecting normal drilling, the situation that construction errors are large due to the delay of the measurement data is avoided, and the correct processing can be performed on the errors timely.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a mechanical inclinometer system based on drilling fluid circulation. Background technique [0002] Well deviation is a very important issue in oil and gas drilling. In particular, the problem of well deviation under high and steep structural conditions not only results in low ROP, but also leads to long drilling cycle and high drilling cost, and often results in serious unqualified well body quality, which leads to halfway filling and re-drilling or scrapping, delaying the well construction period or even failing to reach the target. To the intended purpose of exploration and development. Since the 1920s, engineering technicians and scientific research workers have carried out theoretical research and tool development on the well deviation problem and anti-deviation measures, proposed a variety of well deviation control programs, and developed some anti-deviation tools. These...

Claims

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Application Information

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IPC IPC(8): E21B47/022E21B47/18
CPCE21B47/022E21B47/18
Inventor 钟健陈桂芳雷本禄郭其勇陈建袁野
Owner 自贡中兴耐磨新材料有限公司
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