Fishing device for oilfield downhole operation

Abstract

The invention discloses a fishing device for oil field downhole operation, and relates to the technical field of oil field well operation auxiliary equipment. The fishing device comprises a fixing plate, fixing rods, a lifting mechanism, a first motor and a salvaging mechanism, the fixing rods are fixed to the front side and the rear side of the lower surface of the fixing plate, limiting rods areinserted into the left ends and the right ends of the fixing rods and fixed through bolts, the other ends of the limiting rods are arranged in a triangular cone shape, the lifting mechanism is arranged on the lower side of the fixing plate, a first motor is fixed to the lower surface of a lifting plate in the lifting mechanism and connected with an external power source, an output shaft of the first motor is fixedly connected with the outer side wall of the upper side of a fishing box in the fishing mechanism, a balancing weight is fixed to the outer side wall of the lower side of the fishingbox and arranged in an inverted triangular cone shape, and a plurality of scrapers are equiangularly fixed on the lower side of the outer ring wall of the balancing weight. When reaching the lowermost side of an oil field well, the fishing device can extend out for fishing, so that the fishing device can enter from a wellhead conveniently, time and labor are saved during fishing, and the fishingdevice has the advantages of reasonable arrangement, low manufacturing cost and the like.

Description

technical field [0001] The invention relates to the technical field of oilfield well operation auxiliary equipment, in particular to a fishing device for oilfield downhole operations. Background technique [0002] Oil and natural gas are buried in oil and gas layers tens of meters to thousands of meters underground. To extract them, an oil and gas channel needs to be established between the surface and the underground oil and gas layers. This channel is the oil field well. During the underground operation of the oil field , there are often blanking materials falling into the well, such as some nuts, screws, and wrenches. These blanking materials are generally made of metal. Rods and drill bits are damaged. Due to the size limitation of the wellhead, a specific fishing device is generally required to fish the blanks. However, when the fishing devices in the prior art are in use, it is difficult to fish small objects, and it is time-consuming and laborious. Contents of the i...

AI Technical Summary

Problems solved by technology

[0002] Oil and natural gas are buried in oil and gas layers tens of meters to thousands of meters underground. To extract them, an oil and gas channel needs to be established between the surface and the underground oil and gas layers. This channel is the oil field well. During the underground operation of the oil field , there are often blanking materials falling into the well, such as some nuts, screws, and wrenches. These blanking materials are generally made of metal. The rod and drill bit are damaged. Due to the size limitation of the wellhead, a specific fishing device is generally required to salvage the blanked material. However, when the fishing device in the prior art is used, it is difficult to fish small objects, and it is time-consuming and laborious.

Images