Top conversion tool used for preventing sand

Abstract

The invention relates to a top conversion tool used for preventing sand. The top conversion tool used for preventing the sand is characterized in that a machinery hand releasing tool, a rotating connector tool, module sealing units, a top circulation nipple, a central pipe X-over, an oil pipe nipple and a washpipe X-over are included, the lower portion of the machinery hand releasing tool is connected with the rotating connector tool, the lower portion of the rotating connector tool is connected with the top circulation nipple, the lower portion of the top circulation nipple is connected with a plurality of module sealing units, the bottom of each module sealing unit is connected with the washpipe X-over, and the central pipe X-over is connected inside the machinery hand releasing tool. The machinery hand releasing tool comprises an upper connector, a righting ring, a mandrel, a square buckle nipple and a lower mandrel. The rotating connector tool comprises an upper connector, a setting cylinder, a mandrel and a lower connector. Each module sealing unit comprises a sealing module, a sealing ring and a module nipple. The top conversion tool used for preventing the sand has the advantages of being capable of achieving that an outer layer anti-sand tool can be reliably connected into a well and can be effectively and smoothly released from a hand, avoiding rotating friction caused by an overlong tubular column, greatly reducing field operation risks and achieving gravel filling work and reverse circulation work by being matched with the outer anti-sand tubular column.

Description

technical field [0001] The invention belongs to the technical field of oil field development and production, in particular to a sand control top conversion tool used in gravel filling well completion sand control operations. Background technique [0002] In the current well-known oilfield development, with the increase of drilling and production of deep wells and complex wells, especially the continuous innovation and improvement of completion technology, higher requirements are put forward for the functions and use of well completion tools. The top conversion tool is a necessary service tool to realize the outer sand control tool to complete different operations in the gravel filling sand control operation. Although there are various top conversion tools on the market, after a long-term investigation, it is found that they all have different technical bottlenecks. . Firstly, the traditional top conversion tool fails to achieve reliable connection with the top packer assemb...

AI Technical Summary

Problems solved by technology

Firstly, the traditional top conversion tool fails to achieve reliable connection with the top packer assembly for setting in the well and easy and effective smooth release, which cannot prevent the accidental setting of the packer in advance; secondly, some top conversion tools cannot realize The effective dynamic cooperation with the outer sand control tools such as the top packer assembly, and the large rotational friction generated during the operation of the moving string due to the service string is too long, cannot guarantee its long-term repeated operation as a service tool Putting into production and application brings great operational risks to on-site operations

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