Electro-hydraulic compound penetration device for horizontal subsea tree system

Abstract

The invention discloses an electro-hydraulic compound penetration device for a horizontal subsea tree system. A shell inner cavity of a penetration device main body has the same diameter with a through hole in a tree body and is communicated with the through hole; an electric male joint and a hydraulic male joint are installed in a support frame in the shell inner cavity; a piston rod is arranged at the other end of the shell inner cavity; a dustproof cover, an input tube joint and an electric joint are arranged on the outer circle of the middle section of the penetration device main body, and multiple channels are arranged in the piston rod; the other end of the piston rod is in threaded connection with an internal thread driving shaft, a thrust bearing is arranged on the outer circumference of the internal thread driving shaft, the thrust bearing is provided with a retaining collar and a bearing retainer respectively, and the bearing retainer is in threaded connection with an inner lining; and a plurality of anti-rotating keys II are uniformly distributed on the inner lining in a peripheral direction. The device disclosed by the invention is reliable in performance, and capable of effectively ensuring that setting and recovering operations for an oil tube hanger system can be carried out smoothly.

Description

technical field [0001] The invention belongs to the technical field of offshore oil and gas drilling equipment, and relates to an electro-hydraulic composite penetrating device for an underwater horizontal Christmas tree system. Background technique [0002] The subsea Christmas tree system is one of the key production equipment for deep sea oil and gas exploration and development. Currently, it is mainly divided into two types: horizontal and vertical. The subsea tubing hanger is mainly used to hang the tubing string, provide channels for oil and gas production and annulus, provide interfaces and channels for downhole control, communication and chemical injection, and seal the annulus channels inside the Christmas tree. [0003] The device is mainly used in the underwater horizontal Christmas tree system. In the actual operation process, after the Christmas tree is installed on the wellhead, it is lowered into the tubing hanger system. Due to the requirements of the oil (...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an electro-hydraulic composite penetrating device for an underwater horizontal Christmas tree system, which solves the problems of the existing independent penetrating device, such as complex structure, large number of penetrating devices, large space occupation, strict requirements on equipment processing accuracy, and cumbersome operation. question

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