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Inclinometer while drilling for short radius

An inclinometer while drilling, short-radius technology, applied in the field of inclinometers, can solve the problems of low work efficiency, and achieve the effects of convenient operation, stable pulse signal and novel structure design

Active Publication Date: 2019-09-24
BEIJING LIUHE GREATNESS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing wireless MWD while drilling is inefficient and needs to be improved

Method used

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  • Inclinometer while drilling for short radius

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Embodiment Construction

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0014] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying...

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Abstract

The invention discloses an inclinometer while drilling for short radius. The inclinometer while drilling for short radius comprises a first suspension drill collar and a second suspension drill collar, wherein the first suspension drill collar and the second suspension drill collar are connected by a flexible hinged joint, a first battery pack is mounted on the inner wall of the first suspension drill collar, a rotary valve pulser is further mounted at the end of the first suspension drill collar, the first battery pack supplies power to the pulser through an auxiliary connection seat in a threading mode; and an integral short section is mounted in the second suspension drill collar, after the integral short section is mounted into an anti-pressure cylinder and is connected with the second suspension drill collar through the auxiliary connection seat, a second battery pack is mounted on the inner wall of the second suspension drill collar, and the second battery pack supplies power to the integral short section in a threading mode. The inclinometer while drilling for the short radius has the advantages of novel structure design, convenient operation, stable pulse signals and high anti-interference ability; a wireless short-transmission technology is adopted, the bending angle is large; and a power-saving mode is adopted to reduce consumption.

Description

technical field [0001] The invention relates to the technical field of inclinometers, in particular to a short-radius inclinometer while drilling. Background technique [0002] Short-radius sidetracking horizontal wells started earlier in foreign countries, the technology is becoming more and more perfect, and the application scale is expanding continuously. [0003] The articulated screw motor system independently developed by the Machinery Institute of Petroleum Exploration and Development Research Institute uses the power required by the joints of two screw motors, which are connected by hinged joints. The maximum rigid length is 1.5m, the build-up rate is 3°-5° / m, and the radius of curvature is ≤18m. The wellbore can be changed from vertical to horizontal within the length of 28m curved wellbore. The prototype laboratory test and field intermediate test meet the design requirements. And through the acceptance and evaluation of relevant experts, there are two specificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/022E21B47/12E21B17/16
CPCE21B47/022E21B47/12E21B17/16
Inventor 冯建宇郑学峰
Owner BEIJING LIUHE GREATNESS TECH