Slip expansion-type deep-water packer

Abstract

The invention relates to a slip expansion-type deep-water packer, and belongs to the technical field of deep-sea oil and gas drilling and production equipment. The packer comprises an upper joint, a friction reversing piece, a central pipe and a slip. A lower joint is installed at one end of the central pipe, the upper joint is installed at the other end of the central pipe, and a slip seat is installed on the central pipe between the upper joint and the lower joint in a sliding mode. A rubber cylinder A and a rubber cylinder B are installed on the central pipe on one side of the slip seat through a pressing ring, and the slip is installed on the center pipe on the other side of the slip seat through a slip limit sleeve and a pin column. The slip expansion-type deep-water packer is simplein structure and high in reliability, and can effectively solve the problem that shoulder protrusions occur on the end surfaces of the rubber cylinders and the sealing performance is poor when the packer is squeezed and blocked for packing; at the same time, the problems of low blocking efficiency, poor sealing performance, slip failure and the like caused by friction dead-clamping and clamping-tooth abrasion when an existing slip expands and locks walls of the cylinders, and the problems of pollution and damage to the formation environment are solved; and the slip expansion-type deep-water packer is especially suitable for the deep sea oil and gas drilling and production operations.

Description

technical field [0001] The invention relates to a slip expansion type deep-water packer, which belongs to the technical field of deep-sea oil and gas drilling equipment. Background technique [0002] In the actual work of the existing packer, there are problems such as poor sealing due to the shoulder protrusion phenomenon on the end surface of the rubber tube when the packer is squeezed and sealed; at the same time, frictional jamming and Tooth wear and other phenomena, resulting in low sealing efficiency, poor sealing, slip failure and other problems. Especially in offshore drilling and production, due to the high protection requirements of deep-water oil and gas wells on the formation, the poor sealing performance of the packer often leads to serious formation pollution. In order to ensure the construction safety of deep-sea oil and gas drilling and production, it is necessary to Improve. Contents of the invention [0003] The purpose of the present invention is to pr...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a simple structure and strong reliability, which can effectively avoid the problem of poor sealing due to the shoulder protrusion on the end face of the rubber tube when the existing packer is squeezed and sealed, and at the same time solve the problem of expansion of the existing slips. Slip expansion deepwater packer with low plugging efficiency, poor sealing performance and slip failure caused by frictional sticking and tooth wear when the barrel wall is locked, thus polluting and destroying the formation environment

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