High-temperature high-pressure multifunctional horizontal well damage appraisement instrument

Abstract

The invention relates to a high temperature and high pressure multi-functional horizontal well damage assessment instrument which mainly comprises a working fluid cycle kettle body, a long core gripper, three short core grippers, a confining pressure pump, a collection control box, and a bracket; the long core gripper and the short core grippers are connected together by the cycle kettle body and supported by the bracket with the angle of 90 degrees respectively and the axial lines on the same plane; the top part of the cycle kettle body has a pressurizing hole; the bottom part of the cycle kettle body has a fluid discharge port; the cycle kettle body has a magnetic rotor; the plunger of each gripper is hollow and is connected with a flowmeter; a rubber sleeve has an electrode, a pressure measurement point and an electrode measurement point, and the like; and the internal part of the collection control box has a temperature controller, a cycle motor controller and a data acquisition card. The invention has high automatic degree, can simulate the damage on the top part, side part and bottom part of the horizontal well body caused by the working fluid in the drilling process of the horizontal well under the temperature and pressure conditions, monitor the filtration loss process of the working fluid and the changing situations of the resistivity and pressure of the long core at different sections along with the time, and evaluate the damage degree and depth on different parts of the long core caused by the working fluid.

Description

Technical field: [0001] The invention relates to experimental equipment for evaluating indoor high-temperature and high-pressure working fluid damage in the oil and natural gas industry. The equipment can monitor the instantaneous filtration loss of the working fluid and the penetration depth of the working fluid during the formation of the filter cake, determine the degree of damage, and simulate the impact of the working fluid on the horizontal well section. The degree of damage to the top, side and bottom cores and the influence of drill tool eccentricity on core damage, conduct core fluid sensitivity experiments, optimize oil and gas field working fluids, monitor water injection or polymer injection processes, etc., which belong to the oil and gas exploration and development process of oil and gas Experimental equipment for layer protection. Background technique: [0002] During operations such as drilling, well completion, and stimulation, the solid and liquid phases of...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-temperature and high-pressure multifunctional horizontal well damage evaluation instrument, which has the characteristics of high automation, complete functions, saving working fluid consumption, etc., and can simulate oil and gas drilling, well completion, workover, production stimulation, water injection and other operational links. Fluid damage to reservoirs, especially horizontal wells, can simulate downhole conditions, especially the effects of drilling tool eccentricity, soaking time, anisotropy and gravity on damage in horizontal wells, and overcome the clogging and consumption of working fluid circulation pipelines in conventional experimental equipment Big deficiency

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