Quantitative evaluation method of heavy oil steam stimulation water flooded layer

A technology for quantitative evaluation and water-flooded formations, applied in surveying, earthwork drilling and production, wellbore/well components, etc., can solve problems such as inability to judge water-flooded degree, unstable fluid production components, and water-flooded bottom of oil layers, etc., to achieve Conducive to promotion, good operability, simple application effect

Active Publication Date: 2015-07-29
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0003] 1. Heavy oil steam injection huff and puff development is an intermittent production method, and its development process is steam injection-simmering well-oil production-steam injection. The biggest difference from continuous production driven by water injection is that the components of the produced liquid during the production process are Unstable, the degree of flooding cannot be judged intuitively from the wate

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  • Quantitative evaluation method of heavy oil steam stimulation water flooded layer
  • Quantitative evaluation method of heavy oil steam stimulation water flooded layer
  • Quantitative evaluation method of heavy oil steam stimulation water flooded layer

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[0050] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0051] Such as figure 1 as shown, figure 1 It is a flow chart of a specific embodiment of the quantitative evaluation method of heavy oil steam huff and puff water-flooded layer of the present invention.

[0052] In step 101, the resistivity of the mixed formation water in the heavy oil huff and puff water-flooded layer is determined according to the analysis and test data of the formation water in the water-flooded layer or the logging curve data. For wells with formation water analysis data, use the water analysis data of the target layer of the well to determine the mixed formation water resistivity R of the steam huff and puff water flooded layer z . In the formation mixed salt solution, due to the different mobility of various ions, their...

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Abstract

The invention provides a quantitative evaluation method of a heavy oil steam stimulation water flooded layer. The quantitative evaluation method of the heavy oil steam stimulation water flooded layer comprises the following steps: step 1, determining resistivity of mixed formation water of the heavy soil stimulation water flooded layer according to analysis assay data or logging curve data of the formation water of the water flooded layer; step 2, calculating oil reservoir water saturation Sw according to rock resistivity of a coring well by using an archies formula on the basis of determining the resistivity of the mixed formation water of the heavy oil stimulation water flooded layer; step 3, calculating oil displacement efficiency eta of the water flooded layer according to the calculated oil reservoir water saturation Sw and oil-water relative permeability test data of the coring well; step 4, establishing a heavy oil stimulation water flooding degree judgment standard to realize quantitative judgment and recognition of the water flooding degree of the heavy oil stimulation. The quantitative evaluation method of the heavy oil steam stimulation water flooded layer has better operability, contributes to generalization, and provides a practical and feasible method for fine description of the heavy oil reservoir stimulation water flooded layer.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to a quantitative evaluation method for heavy oil steam huff and puff water-flooded layers. Background technique [0002] At present, the main targets of water flooding evaluation in major oilfields are water flooding thin oil reservoirs (the viscosity value of crude oil is generally less than 50mPa·s, and the density of crude oil is less than 0.9200g / cm 3 ), its evaluation method is not suitable for steam huff and puff heavy oil reservoirs (the viscosity of crude oil is generally greater than 50mPa·s, and the density of crude oil is greater than 0.9200g / cm 3 ), mainly in the following aspects: [0003] 1. Heavy oil steam injection huff and puff development is an intermittent production method, and its development process is steam injection-simmering well-oil production-steam injection. The biggest difference from continuous production driven by water injection is that...

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Application Information

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IPC IPC(8): E21B47/10E21B49/00
CPCE21B47/10E21B49/00
Inventor 李伟忠刘西雷牛丽娟王玉环梁金萍路言秋安洁陈明铭赵衍彬吴兆徽崔卫东宿文浩孙钰韩文杰战艾婷
Owner CHINA PETROLEUM & CHEM CORP
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