Hybrid temporary plugging volume fracturing method suitable for deep shale gas horizontal well

A volume fracturing and horizontal well technology, applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc.

Active Publication Date: 2017-02-22
ORIENT BAOLIN TECH DEV BEIJING
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to field data and experience, it is judged that the causes of casing deformation are complex and numerous, and the well conditions after casing deformation are also different. The emergence of this problem has seriously affected the fracturing process of shale gas horizontal wells, but the fracturing As a necessary condition and effective measure for shale gas wells to obtain effective productivity, it is necessary to effectively and uniformly stimulate the deformed section as much as

Method used

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  • Hybrid temporary plugging volume fracturing method suitable for deep shale gas horizontal well
  • Hybrid temporary plugging volume fracturing method suitable for deep shale gas horizontal well
  • Hybrid temporary plugging volume fracturing method suitable for deep shale gas horizontal well

Examples

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Example Embodiment

[0122] Example 1

[0123] This embodiment provides a mixed temporary plugging volume fracturing system suitable for deep shale gas horizontal wells, which includes: multiple sets of liquid tanks, a main sand mixing vehicle, an auxiliary sand mixing vehicle, a sand tank, and multiple fracturing vehicles , Hydraulic valve 1 and second hydraulic valve 2;

[0124] Wherein, the multiple groups of liquid tanks (10 groups) are respectively connected to the main sand mixer and the auxiliary sand mixer through a liquid supply pipeline;

[0125] The sand tank is connected to the mixing tank of the main sand mixer through a pipeline;

[0126] The outlet of the auxiliary sand mixer is connected to the first high-pressure manifold via a plug valve through a hose line, and the first high-pressure manifold is then connected to the wellhead;

[0127] The outlets of the main sand mixing truck are respectively connected to the inlets of multiple fracturing trucks through a low pressure manifold, and the...

Example Embodiment

[0129] Example 2

[0130] This embodiment provides a mixed temporary plugging volume fracturing method suitable for deep shale gas horizontal wells. The process flow chart is as follows figure 1 Shown:

[0131] In order to facilitate the adjustment of the on-site construction plan, ensure the fracturing construction effect, visually analyze the fracturing construction effect, and facilitate the subsequent analysis of the fracturing effect, it is necessary to use microseismic equipment to monitor the occurrence of microseismic event points during the fracturing construction process in real time and Distribution.

[0132] From figure 2 It can be seen that the acid tank is a tank used to store the acid solution of hydrochloric acid. Usually, before fracturing construction, the blasthole of the variable well section and the whole wellbore near the wellbore are infiltrated with hydrochloric acid. The acid is discharged from the acid tank, enters the fracturing truck through the acid su...

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Abstract

The invention provides a hybrid temporary plugging volume fracturing method suitable for a deep shale gas horizontal well. The method comprises the following steps that 1, wiper trip and well washing operation is conducted on a horizontal well subjected to suspected casing deformation, whether the horizontal well is subjected to casing deformation or not is determined, and if yes, the casing deformation position and length are further determined; 2, after the casing deformation position is determined, perforation position and parameters are determined according to geology and well logging parameters; 3, a perforating gun type and a perforation mode are determined according to the wiper trip condition; 4, the size of construction is determined according to the casing deformation section length and the perforation number; 5, a treatment mode of a fractured section is determined according to different well conditions after casing deformation occurs; 6, on the basis of the perforating gun type, temporary plugging diversion fracturing operation is implemented in a perforation hole and section or a fracturing effective flow channel within the fracture through a hybrid temporary plugging volume fracturing temporary plugging diversion technology, and the overall transformation volume is increased.

Description

technical field [0001] The invention relates to the technical field of unconventional oil and natural gas stimulation, in particular to a hybrid (MCP) temporary plugging volume fracturing method suitable for deep shale gas horizontal wells. Background technique [0002] Shale gas reservoir is a typical unconventional natural gas reservoir with low permeability and low porosity. This resource occupies a large proportion of my country's oil and gas resources, but its geological conditions are special, and its development cost is high and difficult. At the same time, in order to solve the problem of operation efficiency and reduce the operation cost, the domestic field has turned the well site or platform into a factory operation, and regards drilling, cementing, perforation, multi-stage fracturing and other constructions as each process on the assembly line. Completing the drilling, completion and production of multiple wells on the same well site can greatly improve the utiliza...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/267E21B43/27E21B43/116
CPCE21B43/116E21B43/26E21B43/261E21B43/267
Inventor 杜林麟张斌马利宝
Owner ORIENT BAOLIN TECH DEV BEIJING
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