High-water-cut oil field layer recombination scheme selection method and high-water-cut oil field layer recombination scheme selection system

A layer reorganization and scheme technology, applied in the fields of earth drilling, special data processing applications, instruments, etc., can solve the problems of incompatibility between efficiency and effect, and achieve the effect of rapid and effective selection

Active Publication Date: 2012-02-08
PETROCHINA CO LTD
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  • Application Information

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Problems solved by technology

[0005] The main purpose of the embodiment of the present invention is to provide a method and device for selecting a stratum reorganization scheme in a high water-cut oilfield, so as to solve the problem that the stratum reorganization scheme in the prior art cannot balance efficiency and effect

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  • High-water-cut oil field layer recombination scheme selection method and high-water-cut oil field layer recombination scheme selection system
  • High-water-cut oil field layer recombination scheme selection method and high-water-cut oil field layer recombination scheme selection system
  • High-water-cut oil field layer recombination scheme selection method and high-water-cut oil field layer recombination scheme selection system

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Embodiment 1

[0028] The embodiment of the present invention provides a method for selecting a high water-cut oilfield layer recombination scheme, such as figure 1 As shown, the method includes:

[0029] Step 101, according to the permeability, production degree, comprehensive water content difference and interlayer distribution among the single sand layers, determine multiple layer reorganization schemes;

[0030] Step 102, according to the characteristics of the reservoir and the development effect, the effect value of each effect factor in each stratum reorganization plan is obtained, wherein the effect factors include: block recovery level difference, block comprehensive water cut level difference, block seepage Rate difference, recovery level difference within a layer system, comprehensive water cut level difference within a layer system, permeability level difference within a layer system, well section length, number of combined layers, recovery level difference between layers, compre...

Embodiment 2

[0164] The embodiment of the present invention also provides a device for selecting a recombination scheme of a high water-cut oilfield layer, and the device is preferably used to realize the method in the first embodiment above. Figure 5 is the block diagram of the device, such as Figure 5 As shown, the device includes;

[0165] Layer reorganization plan determination unit 1 is used to determine multiple layer reorganization plans according to the permeability, recovery degree, comprehensive water cut difference and interlayer distribution of each single sand layer;

[0166] The effect factor effect value acquisition unit 2 is used to obtain the effect value of each effect factor in each stratum recombination scheme according to the characteristics of the reservoir and the development effect, wherein the effect factors include: block recovery degree difference, block Comprehensive water cut gradient, block permeability gradient, production degree gradient within a layer sy...

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Abstract

The invention provides a high-water-cut oil field layer recombination scheme selection method and a high-water-cut oil field layer recombination scheme selection system. The method includes the following steps: according to the difference of permeability, recovery percentage and comprehensive water cut between single sand layers and the distribution of interlayers, determining a plurality of layer recombination schemes; according to the characteristics and exploitation effect of an oil reservoir, working out the effect value of each effect factor in each layer recombination scheme; according to the significance of each effect factor, determining the weight of each effect factor; weighting the effect value of each effect factor and the weight of each effect factor to obtain the effect sample information (including the effect value of each layer recombination scheme) of each layer recombination scheme meeting a predetermined recombination goal; according to the effect sample information, adopting floor effect measurement operation to obtain effect measurement information; and according to the effect measurement information, selecting a scheme meeting the predetermined recombination goal from the layer recombination schemes.

Description

technical field [0001] The invention relates to the field of petroleum exploitation, in particular to a method and a device for selecting a reorganization scheme of a high water-cut oilfield layer. Background technique [0002] The layered sandstone reservoirs developed by water flooding in my country can be subdivided into tens to more than one hundred single oil layers in the vertical direction. Due to the heterogeneity of continental deposits, the physical properties of each oil layer are different. , the permeability varies greatly, and the ability of oil, gas, water and other fluids to pass through can vary by hundreds to thousands of times. After many years of development and adjustment, such reservoirs entered the high water cut stage, with severe interlayer interference and single layer overburden, and the development effect gradually deteriorated. Moreover, after decades of development, the mature oilfields developed by PetroChina have entered the "double high" stag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00E21B49/00
Inventor 邓宝荣张吉群李巧云宋杰谷小清常军华李华刘双双许晓明
Owner PETROCHINA CO LTD
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