Dissolvable bridge plug and bridge plug fracturing system

A technology of bridge plugs and components, applied in the field of dissolvable bridge plugs and bridge plug fracturing systems, which can solve the problems of difficult operation of drilling plugs and drilling debris affecting normal operations, etc.

Active Publication Date: 2017-08-04
克拉玛依启源石油科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a dissolvable bridge plug, that is, a bridge plug fracturing system, to alleviate the technical problems in the prior art that the operation of drilling plugs is difficult and that drilling debris affects normal operations

Method used

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  • Dissolvable bridge plug and bridge plug fracturing system
  • Dissolvable bridge plug and bridge plug fracturing system
  • Dissolvable bridge plug and bridge plug fracturing system

Examples

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Embodiment 1

[0057] This embodiment provides a dissolvable bridge plug 100, please refer to Figure 1 to Figure 3 ,include:

[0058] The central pipe 110 has a central flow channel, and the connecting end is used for connecting the setting tool 400;

[0059] The rubber cartridge assembly 120 is set on the central tube 110 and is used for radially positioning the bridge plug 100 in the extrusion state;

[0060] The vertebral body assembly 130 is sleeved on the central tube 110 and located on both sides of the rubber tube assembly 120, for applying a relative extrusion force to the rubber tube assembly 120 along the axial direction of the central tube 110;

[0061] The slip assembly 140 is sleeved on the central tube 110 and located on both sides of the vertebral body assembly 130 away from the rubber barrel assembly 120 , for axially positioning the bridge plug 100 and for driving the vertebral body assembly 130 to move toward the rubber barrel assembly 120 ;

[0062] The push ring 150 is...

Embodiment 2

[0101] This embodiment provides a pumping bridge plug 100 fracturing system, please refer to image 3 , including the dissolvable bridge plug 100 in Example 1. It also includes: a perforating gun, a setting tool 400, a cable joint 300, a cable 200, and the like.

[0102] Using the pumping bridge plug 100 fracturing system provided in this embodiment, since the bridge plug 100 can achieve precise axial and radial positioning, and each part of the bridge plug 100 can be effectively dissolved, it can effectively avoid the There are difficulties in the drilling operation of the bridge plug 100 and the problems of drilling debris.

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Abstract

The invention relates to the technical field of bridge plugs, in particular to a dissolvable bridge plug and a bridge plug fracturing system. The dissolvable bridge plug comprises a center tube, a rubber cylinder assembly, cone assemblies, kava assemblies and a pushing ring. The center tube is sleeved with the rubber cylinder assembly; the center tube is sleeved with the cone assemblies, and the cone assemblies are located on the two sides of the rubber cylinder assembly; the center tube is sleeved with the kava assemblies, and the kava assemblies are located on the two sides, away from the rubber cylinder assembly, of the cone assemblies; a rubber cylinder is sleeved with the pushing ring, and the pushing ring is located on the outer sides, close to the connecting end of a bridge plug, of the kava assemblies; the center tube, the rubber cylinder assembly, the cone assemblies, the kava assemblies and the pushing ring are made from dissolvable materials. As the bridge plug is dissolvable, the plug drilling process of the prior art is omitted through degradation work of the bridge plug, and the drilling cutting problem caused by the plug drilling process is also solved.

Description

technical field [0001] The invention relates to the technical field of bridge plugs, in particular to a dissolvable bridge plug and a bridge plug fracturing system. Background technique [0002] Shale gas reservoirs are characterized by ultra-low permeability, large thickness, and developed natural fractures. The gas is mainly adsorbed on the surface of organic matter in an adsorbed state. It is difficult to obtain a good production stimulation effect by conventional stimulation to form a single fracture. Therefore, volume fracturing must be performed on shale with well-developed natural fractures, high siliceous content and high brittleness coefficient, and the natural fractures can be connected through hydraulic fractures to enhance the permeability, thereby improving the economic benefits of shale gas wells. [0003] In the development of unconventional oil and natural gas (including shale oil, shale gas, tight oil and gas, etc.) resources, three key technologies ensure t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/127E21B33/134E21B43/26C22C23/02C22C23/00C08L67/04C08L63/00C08L9/02
CPCE21B33/127E21B33/134E21B43/26C22C23/00C22C23/02C08L9/02C08L63/00C08L67/04C08L2205/03
Inventor 赵燕青姜文贵廖维宇
Owner 克拉玛依启源石油科技有限公司
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