Well group development method

A well group and fracturing well technology, which is applied in the field of well group development, can solve the problems of low viscosity, poor sand carrying effect, not involving multi-well or well group fracturing mode, etc.

Inactive Publication Date: 2021-09-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, the current patents related to carbon dioxide fracturing are mostly aimed at single well construction technology, equipment, processes or methods, etc., and do not involve the fracturing mode of multiple wells or well groups
At the same time, carbon dioxide fracturing fluid has low viscosity and poor sand-carrying effect, and a single carbon dioxide fracturing fluid cannot create main fractures with a certain length and width
It can be seen that the above-mentioned traditional fracturing methods are no longer suitable for the development of tight oil and gas reservoirs.

Method used

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Embodiment Construction

[0029] The invention will be further described below with reference to the accompanying drawings.

[0030] The application provides a development method of a well group for ultimately achieving the overall effectively transformation of the reservoir block based on the wellbential fracturing and improves capacity. In the well group development method, the well is operated in accordance with the coding order, and corresponding to the wells, the fracturing operation is carried out after the drilling operation, where at least one well is in the case, and the well is not in time to return production. Reduce the effect of rear pressure fracture in maintaining pressure. In the well on the well, at least one well is not fractured after the drilling, and thereby reducing the effect of fracturing on the drilling between the positive pressure fracture well and the positive drilling.

[0031] Below figure 1 One embodiment of the well group development method will be discussed in detail.

[00...

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Abstract

The invention provides a well group development method which comprises the steps that firstly, a plurality of wells of a well group are coded in sequence, then the wells are operated according to the coding sequence, fracturing operation is carried out after drilling operation is carried out corresponding to the wells, at least one well is shut down after fracturing, flowback production is not carried out in time, and the well group development process is carried out after fracturing. According to the well group development method, the turnover efficiency of equipment can be improved, the overall construction period is shortened, and the overall operation cost is reduced.

Description

Technical field [0001] The present invention relates to the field of oil and gas field development engineering, and in particular to a well group development method. Background technique [0002] With the development of oil and gas field development, the fracturing technology has also made very great progress. For example, the carbon dioxide fracturing method has also been widely used. Carbon dioxide fracturing uses liquid or supercritical carbon dioxide into the formation, using the characteristics of complex cracks by carbon dioxide to achieve higher degrees of reservoirs, and achieve multiple energy of the reservoir, and the crude oil. As Lu Yucheng (2013), the supercritical carbon dioxide fracture method and system (CN201310220539.3) ", which proposed a supercritical carbon dioxide fracturing system for developing shale gas, including storage tanks, booster pumps. Equivalence, elaborate the workflow of the system. In the invention patent "liquid carbon dioxide dry method," li...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B43/267
CPCE21B43/26E21B43/261E21B43/267
Inventor 贺甲元李小龙王海波李凤霞杨科峰周彤
Owner CHINA PETROLEUM & CHEM CORP
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