Fishing equipment and working method for downhole operation in oil field

Abstract

The invention relates to the technical field of downhole operations in oil fields, and discloses fishing equipment for downhole operations in oil fields and a working method thereof. There is a stabilizing mechanism, one side of the connecting shell is fixedly installed with an connecting plate, and an outer cylinder is fixedly installed between several connecting plates, an inner cylinder is installed in rotation in the outer cylinder, and a fishing mechanism is installed in the inner cylinder, A collection mechanism is installed at the bottom of one side of the inner cylinder. According to the present invention, the guide wheels in oilfield wells with different diameters can be in contact with the inner wall of the salvage well, so as to ensure that the lifting process of the whole fishing equipment in the oilfield well is more stable. Under the oil field, the position of the fishing mechanism can be adjusted through the rotation of the inner cylinder according to the position of the salvaged object, and the salvaged mechanism can be moved to directly above the location of the salvaged object, so that the position adjustment of the salvaged mechanism is more accurate.

Description

technical field [0001] The invention relates to the technical field of oilfield downhole operations, in particular to a salvage device used for oilfield downhole operations and a working method thereof. Background technique [0002] Oil and natural gas are buried in the oil and gas layers tens of meters to several kilometers underground. To extract it, an oil and gas channel needs to be established between the surface and the underground oil and gas layer. This channel is the oil field well. During the operation of the oil field underground , Often there will be falling material into the well, such as metal objects and non-metal objects. After falling to the bottom of the well, it will cause wear or sticking to the drill pipe and drill bit, resulting in damage to the drill pipe and drill bit. Due to size limitations, specific salvage devices are generally required to salvage the blanks. Existing salvage equipment has low salvage precision, and at the same time, the lifting ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide fishing equipment and its working method for downhole operations in oilfields, and solve the following technical problems: (1) solve the problem that the fishing accuracy of fishing equipment for downhole operations in oilfields in the prior art is not high, and at the same time, the lifting process in the oilfield well Unstable technical problems; (2) solve the technical problem that the salvage equipment in the oilfield downhole operation in the prior art cannot store the salvage; (3) solve the salvage surface of the salvage in the prior art The oil is difficult to filter out, resulting in the technical problem of oil waste after salvage

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