Unconventional oil and gas geological engineering integrated development operational research optimization quantitative decision method
A decision-making method and unconventional technology, applied in the field of development and unconventional oil and gas exploration, can solve problems affecting cost and output, and achieve the effect of improving the overall development benefit
Pending Publication Date: 2021-02-12
CHINA UNIV OF PETROLEUM (EAST CHINA) +2
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Problems solved by technology
Because so many factors affect cost and output at the same time, it is difficult for experts to give the best judgment and decision based on their own experience
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Embodiment 1
[0025] Embodiment 1: as figure 1 As mentioned above, the operational research optimization quantitative decision-making method for unconventional oil and gas geo-engineering integrated development, taking shale gas in unconventional oil and gas as an example, the optimal decision-making of geo-engineering integrated development includes the following steps.
[0026] Step 1: Based on the development and distribution, lithology, lithofacies, brittleness, porosity, permeability, in-situ stress, geochemical characteristics and oil-gas properties of shale gas reservoirs in the target interval of the comprehensive study area, it is considered that the research The target layer in the area belongs to the marine sedimentary strata, and the geological parameters are relatively stable on the plane. It is determined that the matrix porosity of the target layer is 4.0%, the matrix permeability is 0.002 mD, the gas saturation is 65%, and the formation pressure is 38 MPa, the buried depth o...
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The invention discloses an unconventional oil and gas geological engineering integrated development operational research optimization quantitative decision-making method, and belongs to the field of unconventional oil and gas exploration and development. The method is used for unconventional oil and gas geology and engineering integrated development optimization decision. The method comprises thefollowing steps: (1) determining geological condition characteristics of a target interval of a research area, wherein the geological condition characteristics comprise structure, lithology, porosity,permeability, oil-gas saturation, formation pressure, ground stress, reservoir thickness, natural fractures and the like; (2) establishing a relationship between the single-well output oil-gas quantity and geological conditions and engineering parameters; (3) establishing a relationship between single-well drilling, fracturing and oil and gas production engineering cost and engineering parametersand geological conditions; (4) block benefits and block drilling, fracturing and oil and gas production engineering costs are determined, a block production unconventional oil and gas benefit function is established, and the block benefits are equal to the block total benefits minus the total cost; and (5) solving an extreme value of the benefit function by utilizing an operational research optimization theory and technical optimization, and obtaining corresponding optimal engineering construction parameters when the unconventional oil and gas exploitation benefit of the target interval of the research area is maximum.
Description
technical field [0001] The invention relates to an operational research optimization quantitative decision-making method for integrated development of unconventional oil and gas geological engineering, and belongs to the technical field of unconventional oil and gas exploration and development. Background technique [0002] Oil and gas geological conditions determine that domestic conventional oil and gas have little potential to increase production. Economic and social development has increased energy demand and the continuous consumption of conventional oil and gas resources has made the contradiction between oil and gas supply and demand in my country increasingly prominent. In recent years, my country's dependence on imported oil and gas has reached 70% and 45% respectively, far exceeding the energy security warning line, and is still rising. my country's energy security situation is extremely severe. Therefore, unconventional oil and gas, including shale oil and gas, ti...
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IPC IPC(8): G06F30/20G06F17/15E21B43/16G06F111/06
CPCE21B43/16G06F17/15G06F30/20G06F2111/06
Inventor 卢双舫陈方文方志雄何希鹏张俊王惠君薛海涛唐明明乔露傅征李克文
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)