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Method for optimizing fracture parameters of target fracturing acidizing well

A fracturing acidizing and optimization method technology, applied in design optimization/simulation, earthwork drilling, wellbore/well components, etc., can solve problems such as optimization methods of fracture parameters for targeted fracturing and acidizing.

Active Publication Date: 2018-12-18
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

At present, the optimization of fracture parameters for fracturing and acidizing wells is mainly carried out for regular plane and regular fractures, and there is no report on the optimization method of fracture parameters for targeted fracturing and acidizing fractures.

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  • Method for optimizing fracture parameters of target fracturing acidizing well
  • Method for optimizing fracture parameters of target fracturing acidizing well
  • Method for optimizing fracture parameters of target fracturing acidizing well

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Embodiment Construction

[0178] The implementation of the present invention will be described in detail below with examples, so as to fully understand and implement the implementation process of how the present invention uses technical means to solve technical problems and achieve technical effects.

[0179] The invention discloses a method for optimizing fracture parameters of targeted fracturing and acidizing wells, which mainly includes the following steps:

[0180] Step 1. Collect basic parameters of reservoir geology and fluid properties

[0181] Reservoir geological and fluid basic parameters, including gas reservoir length, gas reservoir width, gas reservoir thickness, gas reservoir stress sensitivity coefficient, gas reservoir irreducible water saturation, reservoir temperature, reservoir permeability, reservoir porosity, original formation Pressure, natural gas pseudo-critical temperature, natural gas pseudo-critical pressure, natural gas pseudo-critical temperature, natural gas compression c...

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Abstract

A method for optimizing fracture parameters of target fracturing acidizing well includes such steps as uniformly dividing branch fractures into ns line confluence with equal length through space dispersion for single wing of main fracture, and establishing reservoir percolation model with reservoir boundary effect and stress sensitivity for each line confluence; considering the heterogeneous flowof fluid along irregular fracture surface into the main fracture, targeted fracturing acidizing branch fractures, targeted fracturing acidizing branch fractures into the main fracture, considering theheterogeneous conductivity distribution in the main fracture, and the influence of high-speed heterogeneous Darcy effect in the main fracture, the pressure drop model of fluid in the hydraulic fracture being established. A production calculation model of fracturing acidizing wells with high velocity and non-Darcy flow of coupled fluid in reservoir matrix and targeted fracturing acidizing fractures is established. Fracture parameters of targeted fracturing acidizing wells are optimized to increase cumulative production rate of targeted fracturing acidizing wells for 360 days. The invention provides a reasonable basis for optimizing design of fracture parameters of targeted fracturing acidizing wells and improves the effect of reservoir reconstruction.

Description

technical field [0001] The invention relates to a method for optimizing fracture parameters of fracturing and acidizing wells, in particular to a method for optimizing fracture parameters of targeted fracturing and acidizing wells. Background technique [0002] Fracturing and acidizing is an important technical means widely used to improve the production of low permeability oil and gas wells. In fracturing and acidizing stimulation, fractures always extend and expand along the direction of the minimum principal stress. After the fracturing and acidizing construction is completed, the fluid along the length of the fracture continuously flows into the hydraulic fracture, and further flows through the fracture to the bottom of the well, and the fluid along the length of the fracture can be effectively mobilized. However, in areas far away from fractures, a large amount of oil and gas resources cannot be effectively developed. In order to further improve the oil and gas resour...

Claims

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Application Information

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IPC IPC(8): G06F17/50E21B43/27
CPCE21B43/26G06F30/20
Inventor 曾凡辉文超郭建春彭凡向建华
Owner SOUTHWEST PETROLEUM UNIV
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