A Method for Finely Describing the Spatial Distribution of Fluvial Facies Reservoirs
A spatial distribution and river technology, applied in image data processing, 3D modeling, instruments, etc., can solve the problem of inaccurate parameters describing the spatial distribution of fluvial reservoirs, achieve accurate mean value and distribution range of parameters, and improve accuracy Effect
Active Publication Date: 2018-03-13
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
[0004] In the process of implementing this application, the inventors found that there are at least the following problems in the prior art: the existing method for describing the spatial distribution of fluvial facies reservoirs, in the process of describing the spatial distribution of reservoirs, directly takes the area similar to the target area The parameter values of the target area are directly used as the parameter values of the target area, and the parameters describing the spatial distribution of fluvial reservoirs are inaccurate
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[0029] The embodiment of the present application provides a method for finely describing the spatial distribution of fluvial reservoirs.
[0030] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0031] An embodiment of a method for finely describing the spatial distribution of fluvial reservoirs in the present application is introduced below.
[0032] figure 1 It is a flowchart of an embodim...
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The embodiment of the present application discloses a method for finely describing the spatial distribution of fluvial reservoirs. The method includes: obtaining research data of modern fluvial sedimentary facies; counting the research data of modern fluvial sedimentary facies to obtain the statistical results of the first parameter, and determine the first The average value and distribution range of the parameters; according to the single well data in the study area and the research data of modern river sedimentary facies, the values of the calculated parameters associated with the second parameter are counted to determine the average value and distribution range of the second parameter; according to the first parameter and the second parameter For the average value and distribution range of the two parameters, the stochastic model is obtained by using the random simulation method based on the goal to achieve multiple random simulations; the probability body of the river sedimentary microfacies obtained by the stochastic simulation model is counted, and the final stochastic model is selected based on the principle of maximum probability. The stochastic model describes the spatial distribution of fluvial reservoirs in the study area. The embodiment of the present application provides a method for finely describing the spatial distribution of fluvial reservoirs, which can finely describe the spatial distribution of fluvial reservoirs.
Description
technical field [0001] The present application relates to the technical field of reservoir characterization, in particular to a method for finely describing the spatial distribution of fluvial reservoirs. Background technique [0002] Fluvial facies reservoirs are one of the important oil and gas reservoirs in China. The oil reserves in fluvial facies reservoirs account for about half of the produced reserves of China's developed oilfields. It is more difficult to develop water flooding facies reservoirs, and the average recovery rate of fluvial facies reservoirs is 29.8% in the oilfields that have been put into water flooding development in China. Meandering river and discriminating river reservoirs are the most common fluvial reservoirs, and finely delineating the spatial distribution of fluvial reservoirs plays an extremely important role in improving the recovery of fluvial reservoirs. [0003] Existing methods for describing the spatial distribution of fluvial reservoi...
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IPC IPC(8): G06T17/05
Inventor 唐资昌刘媛李东阳王学军
Owner BC P INC CHINA NAT PETROLEUM CORP