Well testing analysis method and device for linear water-invasion reservoir with partially connected faults

Abstract

The invention relates to a well test analysis method and device for a linear water invasion reservoir with part connected faults. The method includes the following steps: 1) collecting the well bottom pressure value of a linear water invasion reservoir producing well with the part connected faults; 2) calculating an actual well bottom pressure change relationship value of the linear water invasion reservoir producing well with the part connected faults; 3) according to a well bottom pressure expression and inputted simulation parameter value of the linear water invasion reservoir producing well with the part connected faults, calculating a simulation well bottom pressure change relationship value of the linear water invasion reservoir producing well with the part connected faults; 4) according to the actual well bottom pressure change relationship value, correcting the simulation parameter value corresponding to the simulation well bottom pressure change relationship value, and based on the corrected simulation parameter value, obtaining a well test interpretation parameter value of the linear water invasion reservoir with the part connected faults to provide a basis for fault connection degree and water body study. The method and the device can be widely applied to the well test analysis of the linear water invasion reservoir with the part connected faults.

Description

technical field [0001] The invention relates to an oil and gas well testing analysis method and device in the petroleum industry, in particular to a well testing analysis method and device for a linear water-invasion oil reservoir with partially connected faults. Background technique [0002] In the process of oil and gas migration and accumulation, faults play an important role in controlling the distribution of oil and gas accumulation. They can be both barriers for oil and gas accumulation and pathways for oil and gas migration. In the process of oil and gas development, the existence of faults directly controls the law of oil-water movement and affects the effect of water injection development. The role of faults in oil and gas migration, accumulation and water injection development depends critically on the sealability of faults, and it is of great significance to conduct well test analysis and research on fault sealability. [0003] At present, the research on well te...

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Problems solved by technology

However, since the reservoir types and boundary conditions of production wells in linear water-invasion reservoirs with partially connected faults are quite different from those of lateral horizontal wells in triple-media reservoirs, it is not possible to conduct direct research on linear water-invasion reservoirs with partially connected faults. Well test analysis, well test analysis for linear water-invasion reservoirs with partially connected faults remains to be studied

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