Horizontal well strong magnetic die

Abstract

The invention discloses a horizontal well strong magnetic die, which comprises an upper connector, a core shaft and a lower connector connected sequentially, wherein an outer cylinder is sleeved outside the core shaft; a plurality of spiral grooves are arranged on the peripheral face of the outer cylinder at intervals; a plurality of counter bores are arranged in each spiral groove at intervals; a magnet is arranged in each counter bore. The magnets of the horizontal well strong magnetic die adopt a spiral line distribution mode, so that mutual interference between the magnets is avoided, and an adsorption plane is a magnetic end face; a special-shaped spiral winding raised rib structure on the surface of the outer cylinder enables a tool to have a centralizing function and to be automatically rotated in a well entering process; compared with similar products, the tool has large adsorption capacity, relatively thorough adsorption cleaning, and is suitable for fishing metal chippings in a vertical shaft, a horizontal well or a highly-deviated well.

Description

technical field [0001] The invention relates to the field of exploration and development of petroleum and natural gas, in particular to a strong magnetic fisher for horizontal wells. Background technique [0002] With the rapid development of oil exploration technology in the world, directional well drilling and horizontal well drilling technology are becoming more and more mature, and the exploration and development of horizontal wells has become an important part of the world's oil and gas exploration and development. For domestic and foreign oilfield companies, the dynamic monitoring of horizontal wells has become an urgent technical problem to be solved. After a breakthrough was made in the logging of casing non-spontaneous well fluid-producing profiles in domestic research, new technical problems such as iron filings and magnetic properties in the horizontal section appeared, and it was urgent to design a special "horizontal well strong magnetic fisher". Effective remo...

AI Technical Summary

Problems solved by technology

In the liquid production profile test of a horizontal well, a large amount of iron filings and other impurities remaining in the horizontal section can easily enter the turbine flowmeter. Too much or too large impurities will cause serious errors in the data of the turbine flowmeter, and even cause the test to fail

Since the horizontal well fluid production profile logging technology is the unique technology of oil and gas well testing companies, tools in related fields cannot solve this industry technical problem in the horizontal well fluid production profile logging, which is why domestic and foreign well logging companies have been unable Solved industry technical problems

[0004] At present, domestic overhaulers used to salvage impurities such as iron filings in wells all have a single-magnet structure. The adsorption efficiency of this structure is low, and the magnets are mostly installed at the axial end of the overhauler, which is only suitable for vertical wells.

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