Fracturing method of cluster-type horizontal wall

A horizontal well and horizontal direction technology, which is applied in the direction of earthwork drilling, wellbore/well components, production fluid, etc., can solve the problems affecting the recovery rate of cluster horizontal wells, large fluid seepage resistance, and weak recovery complementary ability , to achieve the effect of reducing the area of ​​dead oil zone, reducing seepage resistance and reliable implementation

Inactive Publication Date: 2017-03-08
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, the recovery complementary ability of such adjacent horizontal sections is weak, and the fluid seepage resistance is large, so that a large dead oil zone is formed between the fractures in each fracture group, which affects the recovery of cluster horizontal wells.

Method used

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  • Fracturing method of cluster-type horizontal wall
  • Fracturing method of cluster-type horizontal wall
  • Fracturing method of cluster-type horizontal wall

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] The fracturing method for cluster horizontal wells according to the present invention is suitable for stimulation fracturing of cluster horizontal wells. figure 1 It is a flow chart of the fracturing method for cluster horizontal wells according to the present invention; figure 2 Shown is a cluster horizontal well and fractures produced by the first embodiment of the method for fracturing a cluster horizontal well according to the present invention.

[0025] Such as figure 2 As shown, the cluster of horizontal wells includes a plurality of horizontal wells 10 . In one embodiment, a horizontal section 101 can be connected with a vertical section 102 to form a horizontal well 10 . In another embodiment not shown, more than two horizontal sections 101 can be connected with one vertical section 102 to form a horizontal well 10 . For any horizontal well 10 in the cl...

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Abstract

The invention relates to a fracturing method of a cluster-type horizontal wall. The cluster-type horizontal wall comprises multiple horizontal sections located in the same storage layer and parallel mutually. The fracturing method includes the steps: selecting two lines of opposite fracturing point groups on the horizontal sections, wherein the fracturing point groups are formed by multiple fracturing points partitioned along the horizontal and the fracturing points of the neighboring horizontal sections are staggered mutually; implementing fracture on the storage layers on the fracturing points to form multiple cracks. With the method, recovery efficiency of the cluster-type horizontal wall can be increased.

Description

technical field [0001] The invention belongs to the technical field of oil and gas resource exploitation, and in particular relates to a fracturing method for cluster horizontal wells. Background technique [0002] Cluster horizontal wells are widely used in most oil and gas fields due to their outstanding advantages such as small footprint, less drilling relocation, and low cost. The quality of the fracturing method can directly affect the recovery of cluster horizontal wells, so how to improve the existing fracturing methods to increase the recovery of cluster horizontal wells is a technical problem that people hope to solve but fails . [0003] Existing cluster horizontal wells include multiple horizontal sections parallel to each other and located in the same reservoir. After the existing fracturing method is implemented, two rows of fracture groups opposite to each other are formed near each horizontal section. . However, the recovery complementary ability of such ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26
Inventor 陈作吴春方刘世华周林波王宝峰刘建坤李奎为
Owner CHINA PETROLEUM & CHEM CORP
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