High-temperature-resisting and high-pressure-resisting sealing piston, piston rod combination and thickened oil high-pressure texture analyzer

Abstract

The invention provides a high-temperature-resisting and high-pressure-resisting sealing piston, a piston rod combination and a thickened oil high-pressure texture analyzer and relates to an oil field high-pressure texture analyzing device. The invention aims at providing the high-temperature-resisting and high-pressure-resisting sealing piston, the piston rod combination and the analyzer, which can be used for carrying out a thickened oil PVT experiment under high-temperature and high-pressure conditions. The high-temperature-resisting and high-pressure-resisting sealing piston comprises a piston main body, wherein an annular flange is arranged on the surface of the piston main body; the annular flange is vertical to the axis of the piston main body; and on the surface of the piston main body, a high-temperature and high-pressure retainer ring, a high-temperature and high-pressure sealing ring, a high-temperature and high-pressure retainer ring, a guide supporting ring and a fastening nut are tightly and symmetrically arranged at the left and right ends of the piston main body respectively by taking the annular flange as the center.

Description

technical field [0001] The invention relates to an oilfield high-pressure physical property analysis device, in particular to a piston, a plug rod combination and an analyzer. Background technique [0002] In the study of thermal recovery of heavy oil, due to the high viscosity of heavy oil, it is necessary to inject a fluid much higher than the formation temperature in the process of thermal oil recovery. High temperature severely affects the viscosity and physical properties of the formation fluid. Measure and study. At present, the maximum working temperature of relevant domestic experimental equipment is 180°C, which is generally only suitable for PVT experiments on crude oil with relatively thin viscosity; the maximum operating temperature of the PVT equipment of French ST company is 240°C, which cannot meet the PVT experiments of heavy oil under high temperature and high pressure conditions. . Contents of the invention [0003] (1) The technical problem to be solve...

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Problems solved by technology

At present, the maximum working temperature of relevant domestic experimental equipment is 180°C, which is generally only suitable for PVT experiments on crude oil with relatively thin viscosity; the maximum operating temperature of the PVT equipment of French ST company is 240°C, which cannot meet the PVT experiments of heavy oil under high temperature and high pressure conditions.

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