Naked eye packer

A packer and open hole technology, which is applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc., can solve problems such as reservoir isolation, no protection measures, and reduced pressure bearing capacity, and achieve Increased pressure bearing capacity, ingenious structural design, and high pressure bearing capacity

Active Publication Date: 2014-03-26
TIANJIN ANTON PETROLEUM MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rubber sleeve of the prior art packer usually has no protective measures. After downhole setting, the rubber sleeve may be damaged due to the up and down movement of the pipe string during construction, resulting in a greatly reduced pressure bearing capacity and even sealing failure. Cannot effectively seal the reservoir

Method used

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  • Naked eye packer
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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0022] figure 1 It is a half-sectional view of the structure of the open hole packer of the present invention. figure 2 It is a schematic structural diagram of the first auxiliary rubber cartridge in the present invention. Such as figure 1 with figure 2 As shown, the open hole packer includes: a mandrel 17 with an axial through hole, one end of the mandrel 17 is connected to the first joint 1, the other end of the mandrel 17 is connected to the second joint 18, and the first joint 18 is connected to the mandrel 17. 1 to the second joint 18 are sequentially socketed with the left shear ring 3, the limit ring 5, the first auxiliary rubber cylinder pressure ring 22, the first auxiliary rubber cylinder 6, the first spacer ring 7, the main rubber cylinder 9, the second spacer Ring 23,...

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Abstract

The invention discloses a naked eye packer. The naked eye packer comprises a core shaft with an axial through hole, wherein one end of the core shaft is connected with a first joint and the other end is connected with a second joint; a left shearing ring, a limit ring, a first auxiliary rubber cylinder pressing ring, a first auxiliary rubber cylinder, a first packing ring, a main rubber cylinder, a second rubber cylinder, a second rubber cylinder rubber cylinder, a right shearing ring, a piston and a check ring are sequentially sleeved on the core shaft from the first joint; a first pressure transmitting hole and a first slip which correspond to the left shearing ring are formed in the core shaft; a supporting ring is arranged between the main rubber cylinder and the core shaft; an outer sleeve is sleeved on the piston; one end of the outer sleeve is connected with the second joint and the other end is connected with the shearing ring; a second slip corresponding to the piston is arranged on the core shaft; a second pressure transmitting hole is also formed in the core shaft and is positioned between the check ring and the piston. The rubber cylinder is high in loading capacity.

Description

technical field [0001] The invention relates to an open hole packer, which belongs to the technical field of downhole tools for oil and gas well shaft operations. Background technique [0002] Open hole completion and reconstruction of vertical wells or horizontal wells in oil and gas fields are completed and stimulated in stages using open hole packers. Targeted stimulation measures can be taken for each production layer, or increase the acid strength or increase the sand pressure. The scale of fractures can be increased, so as to truly achieve the goal of effectively removing near-wellbore plugging and communicating with reservoirs in all production intervals. The open hole packer is one of the important tools in the staged reconstruction process of open hole well completion. It plays a key role in isolating the open hole reservoir section. Facing the complex downhole environment, the performance of the open hole packer’s rubber cartridge is the key to the effective One o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/127E21B33/129
Inventor 张鼎业张红乔鸿云王鹏
Owner TIANJIN ANTON PETROLEUM MACHINERY MFG
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