A Fast Calculation Method of Flow Field Velocity in Injection-production Well Pattern

A calculation method and injection-production well technology, applied in design optimization/simulation, instrumentation, informatics, etc., can solve problems such as strong ambiguity, low reliability, weak qualitative and quantitative methods, and complex methods, and achieve practical engineering theory Applied value, simple calculation, effect of enriching research methods

Active Publication Date: 2020-06-26
CHANGZHOU UNIV
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Problems solved by technology

[0005] The main purpose of the embodiments of the present invention is to provide a fast calculation method for the flow field velocity of injection-production well pattern, so as to solve the problem that the existing flow field velocity calculation methods are either complex, costly, and long in cycle, or qualitatively strengthened, quantitatively weak, and fuzzy. Defects with strong sex and low reliability

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  • A Fast Calculation Method of Flow Field Velocity in Injection-production Well Pattern
  • A Fast Calculation Method of Flow Field Velocity in Injection-production Well Pattern
  • A Fast Calculation Method of Flow Field Velocity in Injection-production Well Pattern

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Embodiment 1

[0027] This embodiment provides a fast calculation method for the flow field velocity of the injection-production well pattern, such as figure 1 As shown, the method includes:

[0028] Step 1: Approximate calculation method of injection-production streamline based on diamond model and linear model

[0029] Let the P coordinate of any point between injection and production wells be (X p , Y p ), respectively calculate any point P to the water injection well Inj(X 1 , Y 1 ) distance d 1 And to the production well Pro(X 2 , Y 2 ) distance d 2 .

[0030] (1) Approximate calculation method of injection-production streamline based on diamond model

[0031] For linear models such as figure 2 As shown, the straight line segment d 1 slope K 1 for:

[0032] straight line d 1 The equation is: Y=K 1 (X-X 1 )+Y 1

[0033] Coordinates of the middle point O of the line between injection and production wells:

[0034] The slope K of the vertical line connecting the inj...

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Abstract

The invention provides a rapid calculation method for an injection-production well pattern flow field velocity. The method comprises an injection-production flow line approximate calculation method, a flow line-wound fault calculation method, a flow line curvature-to-velocity correction factor C calculation method, an injection-production included angle-to-velocity correction factor M calculation method and an injection-production well pattern flow field velocity calculation method. According to the method, flow field distribution between injection-production wells is established according to the injection-production flow line approximate calculation method and the flow line-wound fault calculation method; the flow line curvature-to-velocity correction factor C calculation method and the injection-production included angle-to-velocity correction factor M calculation method are utilized to calculate correction factors of the flow field velocity; and the injection-production well pattern flow field velocity calculation method applied to flow field velocity calculation. Through the method, the limitations that in a flow field research process, a seepage mechanical method cannot reflect heterogeneous characteristics of an oil reservoir, and a numerical simulation method is complicated in process and long in research cycle and has personnel requirements are solved, and therefore rapid calculation of an injection-production well pattern fluid velocity field is realized.

Description

technical field [0001] The invention relates to the research field of reservoir flow field distribution and flow field velocity in reservoir development and adjustment, and in particular relates to the field of a fast calculation method for flow field velocity of injection-production well pattern. Background technique [0002] In the process of oilfield development, especially in the period of ultra-high water cut, no matter using the conventional hydrodynamic method to enhance the recovery factor or the tertiary oil recovery method of injecting chemical agents, the first task is to find out the reservoir injection-production flow field and flow velocity. Clarify the direction of water channeling to determine the development contradiction, and carry out targeted well pattern adjustment scheme design and liquid volume optimization design according to the flow field contradiction. It can be seen that on the basis of the injection-production well pattern, establishing a fast ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F111/10
CPCG16Z99/00
Inventor 郭文敏吕爱华
Owner CHANGZHOU UNIV
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