Suspension packer with full-bore low setting pressure, return plug and construction process

A hanging packer and full-bore technology, which is applied in the field of petroleum engineering fracturing, can solve problems such as secondary operation difficulties and achieve the effect of ensuring the safety of entering the well

Pending Publication Date: 2019-04-23
PETRO KING ENERGY TECH HUIZHOU CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a full-bore low-sealing pressure suspension packer, tie-back plug and construction technology, which solves the problem of difficult secondary follow-up operations in the prior art

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  • Suspension packer with full-bore low setting pressure, return plug and construction process
  • Suspension packer with full-bore low setting pressure, return plug and construction process
  • Suspension packer with full-bore low setting pressure, return plug and construction process

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Embodiment Construction

[0028] Below in conjunction with the accompanying drawings and embodiments, the full-bore low-sealing pressure suspension packer, tie-back plug and construction process of the present invention will be further described:

[0029] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " Vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings , is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0030] like Figure 1-3 As shown, the f...

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Abstract

The invention relates to a suspension packer with full-bore low setting pressure, a return plug and a construction process. The suspension packer includes a mandrel assembly, wherein one end of the mandrel assembly is connected with a return barrel assembly for realizing a full bore; a hydraulic assembly for providing setting pressure is arranged on the other end of the mandrel assembly. The return barrel assembly is arranged on the upper portion of the suspension packer and used for being connected with delivery tools and connected with the return plug when returning, so that the full bore ofthe suspension packer is realized, prerequisites are provided for the secondary and subsequent operation of an oil and gas well to ensure the smooth progress of the secondary-level follow-up operation, and the number of stages of a ball injection sliding sleeve staged fracturing process is increased; the suspension packer can be used cooperatively with the high-strength special delivery tools toensure the safety of the tools into the well; and the hydraulic assembly is used to reduce the full setting pressure so that the problems that the pressure level of the surface pipeline of part of drilling teams is low and pump trucks for ground construction cannot achieve high pressure can be solved.

Description

technical field [0001] The invention relates to the technical field of petroleum engineering fracturing, and more specifically relates to a full-diameter low-sealing pressure suspension packer, a tie-back plug and a construction process. Background technique [0002] In the technical field of petroleum engineering well completion and fracturing operations, it is necessary to use hanger packers to complete wells to provide conditions for subsequent fracturing operations. The inner diameter of commonly used hanger packers is smaller than the liner (casing), and Unable to achieve full bore, resulting in difficulties in secondary follow-up operations. Contents of the invention [0003] The purpose of the present invention is to provide a suspension packer with full diameter and low sealing pressure, tie-back plug and construction technology, which solves the problem of difficult secondary follow-up operation in the prior art. [0004] The technical solution adopted by the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/06E21B33/12E21B43/26E21B17/02
CPCE21B23/06E21B17/02E21B33/12E21B43/26
Inventor 王金龙曾维忠赵锦栋孙雪猛庞瑞杰
Owner PETRO KING ENERGY TECH HUIZHOU CO LTD
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