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Mechanical backup device for petroleum logging tool

A pushing device and oil logging technology, which is applied in wellbore/well components, earthwork drilling and production, etc., can solve the problems of low consistency of action execution, and achieve the effects of overcoming aging, improving success rate, and strong reliability

Active Publication Date: 2013-07-31
WUHAN HAIWANG MECHANICAL & ELECTRICAL ENGTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of low consistency in the action execution of the push arm of the existing petroleum logging instrument, and provide a mechanical pushing device of the petroleum logging instrument with more consistent action execution and more reliable signal acquisition

Method used

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  • Mechanical backup device for petroleum logging tool
  • Mechanical backup device for petroleum logging tool
  • Mechanical backup device for petroleum logging tool

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Experimental program
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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Such as Figure 1~4 As shown, the mechanical pushing device of the petroleum logging instrument of the present invention includes a cylindrical casing 23 , and three pushing parts that can be accommodated in the casing 23 are evenly arranged on the outer side of the casing 23 along the circumferential direction.

[0031] Such as image 3 As shown, the pushing part includes an insulating pushing plate 13, a thrust rod 15, and a first support arm 7 and a second supporting arm 8 for keeping the insulating pushing plate 13 arranged parallel to the center line of the housing 23, and the insulating pushing The two ends of the plate 13 are respectively hinged with one end of the first support arm 7 and one end of the second support arm 8, and the other end of the first support arm 7 and the other end of the second support arm 8 are r...

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Abstract

The invention discloses a mechanical backup device for a petroleum logging tool, which comprises a cylindrical housing; a plurality of backup parts capable of being accommodated in the housing are uniformly arranged on the outer side of the housing in the circumferential direction; the backup parts improve the success rate of pricking probes into a sleeve wall effectively through adopting a mechanical backup way; the force of pricking the probe in a sleeve is large, and the action consistency is high; the three probes uniformly distributed on the circumference can be firmly pricked on the sleeve wall to form a stable measuring environment, the working efficiency is high, the reliability is strong, and the operation is simple; a driving force for driving the backup parts is provided, without adopting hydraulic expansion and contraction of a rubber part, so that the defects that the rubber is easy to age and the service life is short are overcame, so that the mechanical backup device can be repeatedly used; and the selectivity of the driving force is wide, and power can be provided for the mechanical backup device through hydraulic driving or motor driving.

Description

technical field [0001] The invention relates to an electrical logging device in the field of petroleum industry development, in particular to a mechanical pushing device of a petroleum logging instrument. Background technique [0002] Knowing the oil reserve and the distribution of oil layers in the formation plays an important guiding role in the various exploitations of the oilfield. In recent decades, through a series of research and development, people have divided the conventional methods of proving the distribution and reserves of oil layers into: electrical logging, nuclear logging, acoustic logging, etc., and most electrical methods Well logging measures the resistivity of the rock surrounding the borehole, and this measured resistivity, in general, is indicative of the type of rock. Resistivity logging is a logging method to distinguish the rock properties on the drilling section according to the different resistivity of various rocks in nature. Since the rock res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
Inventor 刘情超付永前孙扬喆周艳平金为武李咸坤吴昊程波
Owner WUHAN HAIWANG MECHANICAL & ELECTRICAL ENGTECH
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