An Electromagnetic Guided Fishing Method
A guiding and electromagnetic technology, which is applied in the field of electromagnetic guiding fishing, can solve the problems such as the success rate of fishing methods that cannot work normally, and achieve the effects of high success rate and efficiency of fishing, convenient operation, and simple convenience
Active Publication Date: 2022-03-25
PETROCHINA CO LTD +1
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Problems solved by technology
[0003] The purpose of the present invention is to provide an electromagnetic guided fishing method that solves the problem that the existing fishing tool guidance cannot work normally and the success rate of the fishing method is low
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[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS: The present invention will be further described below in conjunction with the accompanying drawings: an electromagnetic-guided throwing and fishing method, which is realized by the following devices; the device is composed of an electromagnetic-guided throwing tool and a magnetic-guided eccentric dispensing device, wherein The electromagnetic-guided casting and fishing tool is lowered into the magnetically-guided eccentric dispensing device.
[0019] The electromagnetic guided fishing tool consists of cable 1, cable joint 2, fishing device main body 3, guide coil 4, fixing pin 5, tightening wheel 6, casting and fishing claw 7, coil bobbin 8, coil 9, magnet bar 10, flow adjustment The device 11 and the lower cone 12 are composed, wherein the cable 1 is connected to the guide coil 4 through the cable joint 2 and the upper end of the main body 3 of the fishing device, and the lower end of the cable joint 2 is threadedly con...
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The invention relates to the technical field of oil recovery engineering in an oil field, and belongs to an electromagnetic guiding fishing method applied in an injection well of an oil field. The invention solves the problem that the guidance of the existing throwing tool cannot work normally and the success rate of the throwing method is low. The invention adopts the interaction mode of the electromagnetic field and the permanent magnetic field to realize the guidance of the flow regulating device and the replacement of the throwing and fishing. The electromagnetic guiding fishing tool of the present invention is lowered into the magnetic guiding eccentric dispensing device, and the ground is energized to cause the guiding coil to generate an electromagnetic field, which interacts with the magnetic field generated by the magnet ring of the magnetic guiding eccentric dispensing device to make the electromagnetic guiding fishing tool The throwing claw of the magnetic guidance eccentric dispensing device rotates to the same direction as the eccentric hole of the magnetically guided eccentric dispensing device, and then ejects the flow regulating device into the eccentric hole of the magnetically guided eccentric dispensing device to complete the guiding and fishing. The invention has the advantages of simple and novel structure, simple and convenient operation, high throwing success rate and efficiency, and the like.
Description
technical field [0001] The invention relates to the technical field of oil production engineering in oil fields, and belongs to an electromagnetic guide casting and fishing method applied in oil field injection wells. Background technique [0002] With the needs of oilfield development, many fishing tools and dispensing devices have been invented. A throwing device, authorized announcement number: CN206299360U; permanent throwing device and using method for high-inclination water injection well, CN110185404A, all adopting traditional mechanical guiding and throwing, which is beneficial to the guide body and eccentricity on the throwing device The guide tip in the dispensing device is used together to complete the rotational guidance of the overshot in the wellbore. Since the downhole eccentric dispensing device is placed in the well for a long time, impurities are easy to accumulate in the centralizer with the guide tip installed, so that the guide body of the fishing devic...
Claims
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IPC IPC(8): E21B23/00E21B31/14E21B31/06
CPCE21B23/00E21B31/14E21B31/06
Inventor 李海成蔡萌刘崇江宋兴良韩宇高光磊王玲王晶唐俊东李建云王丽娟
Owner PETROCHINA CO LTD