Novel method for predicting relative permeability of low-permeability reservoir
The invention belongs to the technical field of oil-gas field development, and relates to a novel method for predicting the relative permeability of a low-permeability reservoir. A percolation threshold theory is utilized, a low-permeability oil reservoir constant-speed mercury injection test result...
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| creator | CUI PENGXING DANG HAILONG SHI LIHUA LIANG WEIWEI WANG TAO WANG XIAOFENG DU YAN TANG HOUJUN WANG QIAN ZHAO XISEN HOU BINCHI |
| description | The invention belongs to the technical field of oil-gas field development, and relates to a novel method for predicting the relative permeability of a low-permeability reservoir. A percolation threshold theory is utilized, a low-permeability oil reservoir constant-speed mercury injection test result is combined, a three-dimensional pore throat network distribution model considering gravity influence in the vertical direction is established on the basis of a microscopic motion equation considering solid-liquid molecular force action, a large linear equation set is combined, pore node pressure is solved, and the oil-water relative permeability is calculated. Compared with a traditional core displacement experiment, the method has the advantages that the influence of a microscale effect and gravity is considered, the movement rule of fluid in a reservoir can be reflected more truly, the oil-water relative permeability can be calculated quickly and accurately according to the pore throat characteristics of the lo |
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| subjects | CALCULATING COMPUTING COUNTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ELECTRIC DIGITAL DATA PROCESSING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS |
| title | Novel method for predicting relative permeability of low-permeability reservoir |
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