Fracturing method used for oil gas well

A technology for oil and gas wells and fracturing, which is applied in the field of fracturing of oil and gas wells, can solve the problems of high formation fracturing pressure, high requirements on fracturing equipment, and increase the cost of reservoir stimulation operations, so as to reduce fracturing pressure and reduce fracturing. The effect of cracking costs
CN110878686AInactive Publication Date: 2020-03-13CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2020-03-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention puts forward a fracturing method used for an oil gas well. The fracturing method comprises the following steps of: firstly, carrying out exploration to determine a fixed point in a layerrich in oil gases in a shaft; then, lowering the crack initiation pressure of a stratum near the fixed point; and pumping fracturing fluid into the stratum to form a fracture network. By use of the fracturing method, the position of a crack initiation point can be determined, the crack initiation pressure of the corresponding stratum can be lowered, and therefore, the purposes of communicating reservoir strata to a maximum degree and lowering fracturing cost can be achieved.
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Description

technical field

[0001] The invention relates to the technical field of downhole construction of oil and gas wells, in particular to a fracturing method for oil and gas wells. Background technique

[0002] Open hole staged fracturing completion of horizontal wells is one of the important stimulation measures used in the development of low pressure and low permeability oil and gas reservoirs. In order to improve the productivity of horizontal wells, this technology adopts the completion method of open hole packers in horizontal wells, divides the horizontal section into the designed number of layers according to the geological conditions, and then uses the ball throwing method to open each ball sliding sleeve step by step to realize staged fracturing the goal of.

[0003] This method has the following problems: after the sliding sleeve between the two packers is opened, the position of the formation fracture is the point where the formation fracture pressure is the smallest i...

Claims

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