Method for throwing and fishing out underground restrictor from gas well without utilizing steel wires
A choke and natural gas technology, applied in wellbore/well parts, production fluid, earthwork drilling and production, etc., can solve the problems of long operation period, complicated operation procedures, high fishing cost, etc., and meet the convenience of on-site operation and technical requirements Low, accurate and reliable delivery effect
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[0035] Embodiment 1: Taking a method of fishing a downhole choke without steel wire in a natural gas well as an example, the present invention will be further described in detail.
[0036] Taking a gas well whose inner diameter is 40 millimeters and the downhole restrictor 31 is lowered into a depth of 2000 meters as an example, the present invention will be further described in detail.
[0037] The method of fishing the downhole choke without steel wire in the natural gas well:
[0038] A. Downhole gas production string: First, connect the outer working barrel 17 of the downhole choke to the tubing 34 through the tubing joint 27, then lower the outer working barrel 17 of the downhole choke to the design depth of the downhole along with the tubing string, and set the wellhead , install the wellhead device 32, and close the oil pipe valve of the wellhead device 32.
[0039] refer to Figure 4 . The delivery string is composed of a capture thrower 30 , a downhole choke 31 , a...
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