Integratedsoluble bridge plug and preparation method thereof

A soluble bridge plug and soluble bridge technology, applied in drilling equipment, earthwork drilling, wellbore/well components, etc., can solve problems such as affecting production efficiency, difficult to remove bridge plugs, and unsatisfactory effects, achieving structural Simple, simplified structure, fast dissolving effect

Inactive Publication Date: 2019-09-20
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the soluble bridge plug solves the clogging problem of the oil well, due to the limitation of the current technical level, the dissolution of the bridge plug is affected by many factors (such as temperature, salinity, etc.), so the effect is not ideal; moreover, during the fracturing process, Due to formation pressure, the wellbore is compr

Method used

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  • Integratedsoluble bridge plug and preparation method thereof
  • Integratedsoluble bridge plug and preparation method thereof
  • Integratedsoluble bridge plug and preparation method thereof

Examples

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Effect test

preparation example Construction

[0053] A preparation method of an integrated soluble bridge plug of the present invention comprises the following steps:

[0054] S1, the vertebral body 7 is organically combined with the rubber 6 as a rubber mold connector through mold vulcanization;

[0055] The rubber 6 is vulcanized to the outside of the vertebral body 7. During the setting process, the rubber 6 expands as the outer diameter of the vertebral body 7 increases, so as to achieve the sealing effect. The ball seat 1 is processed at the tail of the vertebral body 7.

[0056] Put the cone into the vulcanization mold, the rubber is evenly filled outside the cone, the mold is sealed, and the mold is heated through a flat vulcanizer, and pressure is applied to the mold to make the rubber closely fit to the outside of the cone;

[0057] The vertebral body 7 is a soluble metal or a soluble non-metal, and the soluble metal can be magnesium alloy, magnesium-aluminum alloy; the soluble non-metal is: soluble plastic, solu...

Embodiment

[0067] see Figure 7 , put the bridge plug into the well, its working method is as follows: the plug is used as a sealing push cylinder to push the cone forward, and the adapter pulls the lower joint to move backward, so that the slip and the cone rubber compound move to the middle, so that the rubber can be more Well, it is safer to achieve the sealing effect with the inner wall of the casing.

[0068] The present invention provides a new structure soluble bridge plug integrating soluble rubber and soluble vertebral body vulcanization and its manufacturing method. Because of its small volume, it can effectively carry out sealing operation through the pressure deformation zone of the wellbore; at the same time, it reduces the In addition to being able to completely dissolve or degrade in the well after fracturing, it can also degrade within a set time, so the manufactured bridge plug has small volume, strong strength High, adapt to various temperature conditions, and can stil...

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Abstract

The invention discloses an integrated soluble bridge plug and a preparation method thereof. The integrated soluble bridge plug includes a soluble bridge plug, the soluble bridge plug sleeves a tension rod, a ball seat is arranged between the soluble bridge plug and the tension rod, a lower joint is arranged at one end of the tension rod, a clamping tile is arranged between the lower joint and the soluble bridge plug and sleeves the tension rod, and the soluble bridge plug is of a composite structure and made of rubber and vertebral vulcanization. The integrated soluble bridge plug is small in volume, large in diameter, simple in structure and high in dissolution speed.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling, and particularly relates to an integrated soluble bridge plug and a preparation method thereof. Background technique [0002] With the development of global oil and gas fields and the continuous depletion of energy, unconventional oil and gas will become an important replacement for oil and natural gas energy in the future. However, due to the large specific gravity, many impurities, high viscosity of unconventional oil reservoirs, and low porosity and ultra-low permeability of unconventional natural gas reservoirs, these oil and gas production costs are relatively high, but with the reduction of conventional oil and gas resources and With rising production costs, more and more attention has been paid to the development and utilization of unconventional oil and gas. For the exploitation of such unconventional oil and gas reservoirs, reservoir reconstruction can be carried out first to...

Claims

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Application Information

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IPC IPC(8): E21B33/134E21B33/127E21B33/129E21B19/10B29C67/24
CPCB29C67/243E21B19/10E21B33/127E21B33/129E21B33/134
Inventor 秦民君慕光华席君杰高峰孙志忠黄传兵成随牛冯滨刘杨周宁侠
Owner BC P INC CHINA NAT PETROLEUM CORP
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