Method and device for predicting CO2 miscible flooding effected oil well gas channeling time of low-permeability reservoir
A time prediction, miscible flooding technology, applied in wellbore/well components, earthwork drilling, climate sustainability, etc. precise effect
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Embodiment 1
[0076] Example 1; A low-permeability reservoir CO 2 A method for predicting gas channeling time of a miscible flooding effective oil well, the prediction method includes the following steps:
[0077] S10: Use CMG numerical simulation software to simulate to obtain an oil field model, the parameters of the oil field model include the oil production rate of the oil well and the CO in the produced gas. 2 The mole fraction of the oil well is used to analyze the oil production rate and the CO in the produced gas 2 The corresponding relationship between the two mole fractions and the fluid flow stage of each reservoir;
[0078] In the specific implementation, the CMG numerical simulation software was used to simulate an oil well in the G69 block, and the following results were obtained: figure 1 Schematic diagram of the different flow stages of a G69 well model shown. And through the simulation of the oil production rate of a certain oil well in block G69 and the mole fraction of...
Embodiment 2
[0119] Example 2; A low permeability oil reservoir CO 2 A device for predicting gas channeling time in miscible flooded wells, based on a CO 2 A method for predicting the gas breakthrough time of a miscible flooding-effective oil well is provided with a computer device, which includes a storage and a high-speed processor.
[0120] A computer program is stored in the storage, and the computer program comprises an effective oil well dynamic analysis module 1, an effective oil well gas channeling early warning module 2, a gas channeling time influencing factor analysis module 3, a gas channeling time prediction model training module 4 and Development well gas channeling time prediction module 5.
[0121] Effective oil well performance analysis module 1 analyzes the production performance of effective oil wells, and divides low permeability oil reservoirs into CO according to the limit thresholds of indicators such as oil production rate and CO2 mole fraction in produced gas. 2 ...
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