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An underground positioning adjustment arm

A technology of positioning adjustment and arm clamping, which is applied in wellbore/well components, production fluid, measurement, etc., and can solve problems such as the inability to retract the docking claw, the inaccurate positioning of the water distributor, and the inability to determine the exact docking position of the water distributor.

Active Publication Date: 2020-08-25
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional judgment method has certain limitations, especially for concentric water injection wells, the measuring and adjusting instrument will also generate a docking signal at the tubing collar, packer, etc., which may easily cause misjudgment and may lead to inaccurate positioning deviation from the water distributor
In addition, the positioning adjustment mechanism used in the existing measuring and adjusting instrument still has the following problems: when the parts in the instrument fail, the docking claws of the positioning adjustment mechanism cannot be retracted, resulting in being stuck with the water distributor, and the experiment cannot be continued; Due to the movement of the docking claw, the exact docking position with the water distributor cannot be determined

Method used

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  • An underground positioning adjustment arm
  • An underground positioning adjustment arm
  • An underground positioning adjustment arm

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing:

[0025] This kind of downhole positioning and adjusting arm includes a card arm bin 1, and the card arm bin 1 includes a left arm device 3, a right arm device 4, a cam 5, an arm screw 6, a spring 7, a mandrel 10, a copper coupling 11, etc. main part.

[0026] Such as figure 1 with image 3 As shown, the spring 7 is located at the inner end of the U-shaped groove 2 of the card arm compartment, and the set screws 8 are installed at the bottom of the left and right arm devices to block the spring 7. The set screws 8 give the spring 7 compression during the retraction process of the adjusting arm. The spring 7 makes the spring 7 have elastic force; during the extension process, due to the elastic force of the spring 7, a lateral force in the spring 7 ejection direction is given to the set screw 8. exist figure 1 , 3 In 6, the shape and size of the square through hole 20 ins...

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PUM

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Abstract

A downhole positioning regulating arm. Including left arm device, right arm device, cam, connecting arm screw, spring, mandrel and copper coupling; A cam mechanism is placed in the inner groove of the arm device, the cam and the mandrel are threaded through the shaft screw, and the mandrel and the motor are connected through the groove inside the upper and lower ends of the copper coupling, so that the motor, copper coupling, The mandrel and the cam rotate synchronously; the magnetic steel is installed in the two adjacent holes on the outer surface of the copper coupling, and the Hall element is installed at the corresponding position in the straight groove on the side of the motor casing for induction with the above magnetic steel. generate an induction signal. The regulating arm of this kind can be retracted under the manual operation of the user, and can monitor the movement position and condition of the regulating arm in real time.

Description

technical field [0001] The invention relates to a positioning adjustment mechanism applied in the technical field of downhole docking measurement and adjustment. Background technique [0002] At present, water flooding technology is widely used in oilfields. Water flooding wells need to use downhole measuring and adjusting instruments to adjust the injection flow rate of water distributors in each layer. When adjusting, the downhole measuring and adjusting instrument first connects with the water distributor in the water well string, and then adjusts the water distributor, so as to control the water injection volume of the layer. How to judge whether the test and adjustment instrument is successfully connected with the water distributor plays an important role in the success of the test and adjustment and ensuring the effect of the test and adjustment. The traditional docking judging method is to generate a docking signal through the axial movement of the docking claw or ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20E21B47/00
CPCE21B43/20E21B47/00
Inventor 任福深刘扬王中杨王宝金孙鹏宇范玉坤
Owner NORTHEAST GASOLINEEUM UNIV
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