Deep-water packer

Abstract

The invention relates to a deep-water packer and belongs to the technical field of deep-sea oil-gas testing operation equipment. The packer comprises an upper connector, a central pipe, a lower connector, a clamp, a rubber sleeve, a sliding sleeve and a locking sleeve, and the upper connector is mounted at the top end of the central pipe; the lower connector is mounted at the bottom end of the central pipe, the clamp is mounted on the position, below the upper connector, of the central pipe, and the position, below an upper conical body, of the central pipe is sleeved with the sliding sleeve and the locking sleeve; and a lower conical body is mounted on the position, below the locking sleeve, of the central pipe, and a pressing piece is arranged between the lower conical body and the locking sleeve. The packer is compact in structure and easy and convenient to operate, the defects that the existing operation that pulling up and putting down of a pipe column are utilized to control packer seat sealing and sealing removal is tedious and long in time consumption are overcome, and the problem that an existing packer is subjected to sealing removal in advance when hydraulic oil ways lose efficacy, so that the stratum environment is polluted and destroyed is solved; two hydraulic oil ways of the deep-water packer do not affect the seat sealing state of the packer, and seat sealing is reliable; and the deep-water packer is particularly suitable for ocean deep-water oil-gas well operation.

Description

technical field [0001] The invention relates to a deep-water packer, belonging to the technical field of deep-sea oil and gas testing operation equipment. Background technique [0002] Packers are divided into rotating seat packers and non-rotating seat packers, among which non-rotating seat packers include lifting mechanical packers and various types of hydraulic packers. The lifting and lowering of the mechanical packer uses the lifting and lowering of the pipe string to control the setting and unsealing of the packer, so the operation is cumbersome and time-consuming, while the hydraulic packer is often caused by harsh environmental factors. The disconnection of the hydraulic oil circuit causes the packer to be unsealed in advance. Offshore deepwater oil and gas wells have high requirements for formation protection, and early unseal often leads to serious formation pollution. Contents of the invention [0003] The purpose of the present invention is to provide a simple...

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Problems solved by technology

[0003] The object of the present invention is to provide a simple structure, good practicability, which can effectively avoid the existing lifting and lowering of the pipe string to control the setting and unsealing of the packer. The operation of the seal is cumbersome, and the set seal is reliable; it is a deep-water packer that solves the problem that the existing packer unseals in advance when the hydraulic oil circuit fails, thereby polluting and destroying the formation environment

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