Injection-production relation optimizing and adjusting method for well group

An adjustment method and technology of well groups, which are applied in the fields of fluid production, earthwork drilling, wellbore/well components, etc., can solve the problems of low model conformity rate and single consideration factors, and achieve accurate distribution of remaining oil and well group adjustment. Parameter reliable effect

Inactive Publication Date: 2015-03-25
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for optimizing and adjusting the injection-production relationship of w

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  • Injection-production relation optimizing and adjusting method for well group
  • Injection-production relation optimizing and adjusting method for well group
  • Injection-production relation optimizing and adjusting method for well group

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Embodiment Construction

[0052] Below in conjunction with Zhongyuan Oilfield Wei 42 block Wei 42-23 well group optimization adjustment example and accompanying drawing, the embodiment of the present invention is described in further detail, byfigure 1 As can be seen, the concrete steps of the present invention are as follows:

[0053] 1. Compile the sedimentary microfacies distribution map, sand layer structure map, effective thickness contour map, porosity contour map, and permeability contour map of Block Wei 42 in Zhongyuan Oilfield

[0054] 1.1 Collection and sorting of Zhongyuan Oilfield Wei 42 block data: basic data include 5 types of data: seismic data, drilling geological data, fluid analysis data, rock analysis data, and development dynamic data.

[0055] Seismic data: top structure data, sand body distribution data, attribute distribution data and fault data.

[0056] Drilling geological data: drilling geological information, well deviation data, breakpoint data, single well flow unit data, ...

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Abstract

The invention provides an injection-production relation optimizing and adjusting method for a well group and belongs to the field of oil field development projects. According to the injection-production relation optimizing and adjusting method for the well group, a three-dimensional phase-control geologic model of a block to be adjusted is established by drawing a depositional microfacie distribution diagram, a sand group structural map, an effective thickness contour diagram, a porosity contour diagram and a permeability contour diagram of the block to be adjusted, the remaining oil saturation distribution state of the well group in the block to be adjusted is determined, and the injection-production relation of the well group in the block to be adjusted is optimized and adjusted. Through depositional microfacie control, the geologic model which is more similar to the actual stratum is established, the influence of depositional microfacies is fully considered during numerical simulation of the well group, permeability saturation curves corresponding to the percolation characteristics of different depositional microfacies are provided for the different depositional microfacies, and the simulated remaining oil distribution states in different facie belts are more accurate. Well group adjustment parameters obtained on the basis are more reliable, and a more objective theoretical basis is provided for continuous and efficient development of oil fields and scientific decision-making.

Description

technical field [0001] The invention relates to a method for optimizing and adjusting the injection-production relationship of a well group, which belongs to the field of oilfield development engineering, and specifically belongs to the technical field of optimizing and adjusting the injection-production relationship of a well group in the later stage of oilfield development. Background technique [0002] Most old oilfields in China adopt the water flooding development method, and have entered the stage of high water cut development, the distribution of remaining oil is scattered, it is difficult to adjust and tap the potential, and large-scale adjustment can no longer meet the development requirements. The well group optimization and adjustment can optimize the target area in a targeted manner, improve the degree of reserve water driving and reduce production decline, which is of great significance to the sustained and stable production of mature oilfields. [0003] The mai...

Claims

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Application Information

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IPC IPC(8): E21B43/30G06F17/50
CPCE21B43/30G06F30/00
Inventor 朱黎明李中超赵磊王自立毛立华袁振武韩圆庆高江博
Owner CHINA PETROLEUM & CHEM CORP
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