Simulation device for variable mass flow of oil-gas-water three-phase fluid in wellbore with complex structure

Abstract

The invention discloses a device for simulating the oil-gas-water three-phase fluid variable mass flowing in a complex structural well shaft. The device comprises a simulation well shaft (1), a gas supply device (2) connected with the simulation well shaft (1), an oil supply device (3) and a water supply device. By utilizing the device, the flowing of a single phase fluid, a gas-liquid two-phase fluid, an oil-water two-phase fluid and an oil-gas-water three-phase fluid can be simulated with very wide simulation range, and the obtained experiment data is more accurate and good applicability is realized.

Description

technical field [0001] The invention relates to an indoor experiment simulation device in the petroleum industry, in particular to a large-scale simulation device for variable mass flow of oil-gas-water three-phase fluid in a wellbore with a complex structure. Background technique [0002] As a high-efficiency oil and gas recovery technology, complex structure wells are a new technology developed rapidly in the world oilfield development at the end of the 20th century. Using this technology can usually greatly improve the productivity and ultimate recovery of a single well, especially for Some special unconventional oil and gas reservoirs, such as low permeability, multiple fractures, and thin production layers, have more significant production benefits. At present, many countries in the world are using complex structure well technology to exploit oil and gas reservoirs. Although oil and gas resources can be effectively exploited by using complex structure wells, there are ...

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Problems solved by technology

[0011] In order to solve the technical problem that the simulation device in the prior art cannot simulate the three-phase flow experiment of oil, gas and water in the wellbore, the present invention provides a simulation device for the variable mass flow of the oil, gas and water three-phase fluid in the wellbore with complex structure. Simulate the complex flow process of oil-gas-water three-phase fluid in the target well section of horizontal well during the exploitation of crude oil, natural gas and formation water, and study the pressure drop law and its main influencing parameters of multi-phase fluid mass flow in the wellbore of horizontal wellbore. Provide reliable data support for the complex flow model research of single-phase, oil-water two-phase, gas-liquid two-phase and oil-gas-water three-phase flow in the completion section of the well

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