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A Borehole Stress Gauge Mounting and Free Recovery Locator

A technology of borehole stress gauge and locator, which is applied in earth-moving drilling, wellbore/well components, etc., can solve problems such as damage and stuck teeth cannot be withdrawn, and can reduce the accuracy requirements, simplify the production process, and avoid damage. Effect

Active Publication Date: 2021-06-22
INST OF GEOMECHANICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the disadvantages of the above-mentioned equipment and technical solutions are that the teeth cannot be smoothly withdrawn from the well wall, and the stress gauge can only be recovered by destroying the above-mentioned positioning structure.

Method used

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  • A Borehole Stress Gauge Mounting and Free Recovery Locator
  • A Borehole Stress Gauge Mounting and Free Recovery Locator
  • A Borehole Stress Gauge Mounting and Free Recovery Locator

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0042] figure 1 Schematic diagram of the structure of the borehole stress gauge installation and free recovery locator provided by the first embodiment of the present invention. Please refer to figure 1 , the present embodiment provides a drilling stress gauge installation and free recovery positioner, which includes a base 100 , a guide post 200 , a sleeve 300 , a latch 400 , a support rod 500 , an elastic member 600 and a limit mechanism 700 .

[0043] Wherein, the guide column 200 is fixedly arranged on the base 100, the sleeve 300 is arranged around the outside of the guide column 200 and can move along the length direction of the guide column 200; 420, the hinged end 410 is hinged with the base 100, and the insertion end 420 is used to insert into the well wall; the two ends of the support rod 500 are respectively hinged with the middle part of the latch 400 and the sleeve 300; when the sleeve 300 moves toward the base 100 , the support rod 500 can push the insertion en...

no. 2 example

[0052] figure 2 A schematic diagram of the local structure of the first borehole stress gauge installation and free recovery locator provided in the second embodiment of the present invention; image 3 It is a schematic diagram of the partial structure of the second drilling stress gauge installation and free recovery positioner provided by the second embodiment of the present invention. Please refer to figure 2 , image 3 , this embodiment provides a borehole stress gauge installation and free recovery locator, which is roughly the same as the borehole stress gauge installation and free recovery locator of the first embodiment, the difference between the two is that the borehole stress gauge of this embodiment The limit mechanism 700 in the gauge installation and free recovery locator includes a swing rod 710; the guide post 200 is a hollow cylinder, and the side wall of the guide post 200 is provided with a through hole 210; the swing rod 710 is hinged on the inner wall ...

no. 3 example

[0057] Figure 4 A schematic diagram of the partial structure of the borehole stress gauge installation and free recovery locator provided by the third embodiment of the present invention. Please refer to Figure 4 , this embodiment provides a borehole stress gauge installation and free recovery locator, which is roughly the same as the borehole stress gauge installation and free recovery locator of the second embodiment, the difference between the two lies in the borehole stress gauge installation and free recovery locator of the second embodiment. The driving device in the meter installation and free recovery positioner also includes a gear set 760 and a rotating rod 770; Connected, the eccentric wheel 750 is arranged on the rotating rod 770; the motor 740 drives the rotating rod 770 to rotate through the gear set 760, and the rotating rod 770 pushes the swing rod 710 to swing through the eccentric wheel 750.

[0058] On the basis of the second embodiment and the third emb...

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PUM

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Abstract

The invention provides a positioning device for drilling stress gauge installation and free recovery, which includes a base, a guide column, a sleeve, a locking tooth, a support rod, an elastic member and a limit mechanism; the guide column is fixedly arranged on the base, and the sleeve The cylinder is set around the outer side of the guide column and can move along the length direction of the guide column; the two ends of the latch are respectively the hinged end and the insertion end, and the hinged end is hinged to the base; the two ends of the support rod are respectively hinged to the middle of the latch and the sleeve; when the sleeve moves toward the base, the support rod can push the plug-in end to swing in a direction away from the guide post; both the elastic part and the limit mechanism are arranged on the guide post, and the elastic part is used to push the sleeve toward the guide post. The movement towards the base; the limit mechanism is used to limit the movement of the sleeve towards the base. The locator of the present invention uses the elastic member to push the sleeve to expand the clamping tooth, so as to realize the fixation of the stress gauge in the deep well, recover the stress gauge, and the clamping tooth can withdraw from the well wall only by overcoming the spring force, so as to realize the non-destructive operation of the stress gauge Recycle.

Description

technical field [0001] The invention relates to the technical field of deep well ground stress detection, in particular to a positioning device for drilling stress gauge installation and free recovery. Background technique [0002] At present, placing and fixing the strain gauge at the predetermined position of the deep well is realized in the following way: a spring and a bayonet are arranged in the outer sleeve of the strain gauge, and a bell mouth is provided on the side wall of the outer sleeve. When the strain gauge is slowly lowered to the predetermined position, the tool is used to push the spring and the latch to the bell mouth, and finally the elastic force of the spring pushes the latch laterally from the bell mouth. When the latch is inserted into the well wall of the deep well, the strain gauge is released. fixed in a deep well. [0003] However, the disadvantages of the above-mentioned equipment and technical solutions are that the locking teeth cannot be withd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B23/01
CPCE21B23/01
Inventor 张重远何满潮吴满路王新富方向阳
Owner INST OF GEOMECHANICS
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