Method and system for measuring and calculating equivalent boundary distance of multilayer commingled producing well reservoir

Abstract

The invention provides a method and a system for measuring and calculating the equivalent boundary distance of multilayer commingled producing well reservoir, and belongs to the field of oil and gas field development. The measuring and calculating method comprises the following steps that the measured pressure value which is changed alone the time of the measured bottom hole pressure of the multilayer commingled producing well is acquired; a theoretical pressure value which is changed alone the time of the theoretical bottom hole pressure of the multilayer commingled producing well is simulated according to a pre-configured seepage model, wherein the seepage model is pre-configured according to the difference of the distance of each reservoir boundary of the multilayer commingled producingwell; an error between the measured pressure value and the theoretical pressure value corresponding to the same time is calculated, and the seepage model is corrected according to the error; and according to the corrected seepage model, the equivalent boundary distance of the multilayer commingled producing well is measured. By adopting the technical scheme, the difference between the boundary distances of each reservoir of the multilayer commingled producing well is fully considered, the characteristics of each reservoir can be interpreted more accurately, the more accurate boundary equivalent distance is obtained, and important guiding significance is achieved for the implementation of single well dynamic reserves, subsequent well network encryption and the like.

Description

technical field [0001] The invention relates to the field of oil and gas field development, in particular to a method and a system for measuring and calculating the equivalent boundary distance of a multi-layer combined production well reservoir. Background technique [0002] Due to reservoir deposition and later tectonic effects, there is vertical heterogeneity among the physical properties of the reservoirs in the joint production well, and the boundary distance of each reservoir is different. The existing pressure analysis method of joint production wells considers that the boundary distance of each reservoir in multi-combined production wells is the same, and does not consider the difference in the boundary distance of each layer of joint production wells. [0003] In the process of implementing the present invention, the inventors of the present application found that the above solutions in the prior art cannot accurately express the vertical heterogeneity of the measur...

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Problems solved by technology

[0003] In the process of realizing the present invention, the inventors of the present application found that the above-mentioned solutions in the prior art cannot accurately express the vertical heterogeneity of the measured combined production gas well reservoir

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