Completion parameters and productivity optimization method of two-phase flow perforation in high temperature and high pressure oil and gas vertical wells

Abstract

The invention belongs to the technical field of oil and gas reservoir development engineering management, and particularly discloses a high-temperature high-pressure oil-gas vertical well two-phase flow perforation completion parameter and capacity optimization method, which relates to construction of a high-temperature high-pressure oil-gas vertical well two-phase flow model, a reservoir filtration steady-state model and a wellbore two-phase flow model, liquid holdup analysis, two-phase flow capacity optimization, algorithm flow design and the like. The method comprises the following steps: A, constructing the reservoir filtration steady-state model; B, constructing the wellbore two-phase flow model; C, analyzing and calculating liquid holdup of a fluid; D, constructing a two-phase flow capacity optimization model; and E, solving the two-phase flow capacity optimization model. According to the method, optimal perforation distribution is accurately predicted and parameters are optimized, so that the design level of an oil-gas mining device can be greatly improved and oil-gas reservoir development is facilitated.

Description

technical field [0001] The invention belongs to the technical field of oil and gas reservoir development engineering management, and specifically relates to a high-temperature and high-pressure oil-gas vertical well two-phase flow perforation completion parameter and productivity optimization method, which involves a high-temperature and high-pressure oil-gas vertical well two-phase flow model and a reservoir seepage steady-state model , Wellbore two-phase flow model construction, liquid holdup analysis, two-phase flow productivity optimization and algorithm flow design, etc. Background technique [0002] Because liquids and gases have the characteristics of flow, they are generally referred to as fluids. The so-called two-phase flow or multiphase flow refers to the flow of two or more different phase substances at the same time, such as the mixed flow of gas and liquid, the mixed flow of gas and solid, the mixed flow of liquid and solid, and the mixed flow of oil, gas and w...

AI Technical Summary

Problems solved by technology

Among them, the mathematical expressions of the split flow model and the flow equalization model are relatively simple, but they cannot meet the production accuracy requirements in engineering applications. The flow equalization model is only suitable for partial flow patterns, and the split flow model is suitable for horizontal pipe flow but not for vertical well pipe flow.

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