A surface vacuum oil injection device for oil drilling rotary steerable tools

Abstract

The invention discloses a ground vacuum oiling device for oil drilling rotary steering tools. A device body comprises a circulation system, a vacuum system, an automatic control system and a vacuum pressure balance pipeline. The circulation system comprises an oiling motor, an oiling pump, a granulometer, an oil pressure gauge, a stop valve, a filter, an oil tank, an oil inlet pipeline, an oil returning pipeline and a quick coupling connected with the pipelines; the vacuum system comprises a vacuum pump, a vacuum gauge, a vacuum degree display unit, a connection pipeline and a connection joint; the control system comprises a computer, a programmable logic controller, and a driving circuit power supply; the vacuum pressure balance pipeline comprises a pressure balance pipeline, a pipeline joint and a balance joint; a rack structure of the circulation system, the vacuum system and the control system is installed; and a temperature display unit and a force display unit are installed.

Description

technical field [0001] The design of the invention relates to the technical field of measuring instruments while drilling, in particular to a ground vacuum oiling device for oil drilling rotary steerable tools. Background technique [0002] The current large-scale development of unconventional energy sources such as shale gas has greatly increased the demand for rotary steerable drilling systems. Push-by rotary steerable drilling systems, as one of the types, have also been applied in large-scale engineering without exception. Among them, the hydraulic module is the key component to realize the reliable application of the push-on rotary steerable steering system. Its main function is to complete the actions of the steering commands, and to guide according to the steering commands such as increasing slope, descending slope, increasing azimuth, descending azimuth, and stabilizing the slope and azimuth. Drilling is to complete the well trajectory drilling task according to the ...

AI Technical Summary

Problems solved by technology

In order to ensure that the hydraulic module successfully completes the guidance command, the stability and reliability of the hydraulic module must be guaranteed. In addition to the performance of the accessories, the stability and reliability of the hydraulic module also depends on the vacuum degree of the hydraulic oil injected. If there are air bubbles, the air bubbles will expand and become larger under the action of high temperature downhole, which will cause accelerated wear of spare parts and swelling and deformation of the rubber tube, and the execution efficiency of the hydraulic unit will be significantly reduced, and the service life will be greatly reduced. Therefore, increase the oil injection vacuum It is especially important to reduce the air bubbles in the hydraulic oil

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