High temperature, high pressure core dynamic harm valuation test instrument

Abstract

The invention is a high pressure high temperature rock core dynamic damage estimate apparatus. It comprises straight pump mud pump, high pressure liquor tank, side plane circulating multi test point rock core pick, flow meter, gas source, pressure sensor, round pressing pump, return pressure controller, data gatherer and computer. Based on simulated rock temperature, pressure, flow speed, first obtain the original percolation rate on each section of rock core, then the mud pump drives the well liquor in the high pressure liquor container, obtain the percolation rate of each section of rock core without taking out the rock core, finally make out an evaluation of the damage the well liquor to the rock core so to pick out the drill liquor protective to the oil layer and the complete well liquor system.

Description

Technical field: [0001] The invention relates to an indoor simulation of the invasion of the well fluid into the reservoir under the high temperature, high pressure and flowing state of the formation in the petroleum industry, as well as the depth and degree of the invasion into the reservoir, and can also perform various sensitivity evaluation tests of the reservoir The utility model relates to a high-temperature and high-pressure core dynamic damage evaluation tester with an optimized formulation of well-entry fluid, which belongs to the field of experimental equipment for oil and gas layer protection in petroleum exploration and development. Background technique: [0002] Protecting oil layers and preventing damage is a systematic project that runs through the entire process of exploration and development of oil and gas wells. The internal cause of formation damage lies in the properties of the oil and gas reservoir itself, such as lithology, physical properties and forma...

AI Technical Summary

Problems solved by technology

[0004] At present, there is only a single well-entry fluid damage device for simulating drilling and a multi-stage permeability gradiometer for measuring the depth and degree of core damage by well-entry fluid in China.

However, oil and gas layer protection runs through every production process of oil and gas exploration and development. It is a comprehensive supporting technology involving multiple disciplines. The above-mentioned instruments and devices are far from meeting the needs of actual production.

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