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Downhole positioning device

A technology of positioning device and limit pin, which is applied in wellbore/well components, measurement, earth-moving drilling and production, etc., can solve the problems of low reliability and safety of oil and water well monitoring

Inactive Publication Date: 2020-03-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a downhole positioning device, which can solve the problem of low reliability and safety in the monitoring of oil and water wells in the related art

Method used

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] figure 1 It is a structural schematic diagram of a downhole positioning device provided by an embodiment of the present invention, such as figure 1 shown, including:

[0036] A main structure 101 , a linkage rod 102 , at least two support arms 103 and a support arm housing 104 .

[0037] The linkage rod 102 includes a rod body 102a, a fishing cap 102b at one end of the rod body 102a, and a slot structure 102c at the other end of the rod body 102a. The main structure 101 is sleeved on the rod body 102a.

[0038] The main body structure 101 is connected with the support arm housing 104 .

[0039] Each support arm 103 includes a support arm main body 103a and an engaging structure 103b located at one end of the support arm main ...

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Abstract

The invention discloses a downhole positioning device and belongs to the technical field of downhole monitoring. The downhole positioning device comprises a main body structure, a linkage rod, at least two supporting arms and supporting arm shells; the linkage rod comprises a rod main body, a salvaging cap positioned at one end of the rod main body as well as a clamping groove structure positionedat the other end of the rod main body; the main body structure is in sleeving connection with the rod main body; the main body structure is connected with the supporting arm shells; each supporting arm comprises a supporting arm main body and a clamping structure positioned at one end of the supporting arm main body; the clamping structure is arranged in the clamping groove structure; a supporting point is arranged between the clamping structure and the supporting main body; and each supporting arm is movably connected with the supporting arm shell through the supporting point. The downhole positioning device can fix a monitoring instrument underground and can fix the underground position of the monitoring instrument without a steel wire or a cable compared with the prior art, so that thefall-into-well accident caused by breakage under the corrosion of the steel wire or the cable is avoided and the monitoring reliability and safety of an oil water well are improved.

Description

technical field [0001] The invention relates to the technical field of downhole monitoring, in particular to an downhole positioning device. Background technique [0002] Since the geological conditions of the area where the oil and water wells are located are usually complex, in order to achieve safe and effective exploitation of the oil and water wells, it is necessary to monitor the environmental parameters and liquid parameters of the oil and water wells. Among them, the environmental parameters of the oil-water well include formation pressure and temperature in the area where the oil-water well is located, and the liquid parameters of the oil-water well include the liquid production rate of the oil-water well, the water content in the liquid, and the liquid flow rate. [0003] In the related technology, the monitoring instrument is lowered into the specified depth of the oil-water well through steel wire or cable, and the monitoring instrument monitors the environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/01
CPCE21B47/01
Inventor 赵立安陈显程子阳赵跃华尤立忠唐秀梅刘鹏张清胧
Owner PETROCHINA CO LTD
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