High temperature and high pressure resistant sealed piston, plug rod combination and heavy oil high pressure physical property analyzer

Abstract

The invention relates to a combination of a high-temperature and high-pressure resistant sealing piston, a plug rod and a heavy oil high-pressure physical property analyzer, which relates to an oilfield high-pressure physical property analysis device. Its purpose is to provide a high temperature and high pressure resistant sealing piston, plug rod combination and analyzer that can meet the heavy oil PVT experiment under high temperature and high pressure conditions. A high temperature and high pressure resistant sealing piston of the present invention comprises: a piston body; an annular flange is provided on the surface of the piston body, and the annular flange is arranged perpendicular to the axis of the piston body; on the surface of the piston body, With the annular flange as the center, a high-temperature and high-pressure retaining ring, a high-temperature and high-pressure sealing ring, a high-temperature and high-pressure retaining ring, a guide support ring and a fastening nut are arranged symmetrically to the left and right ends of the piston body.

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 research. 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 so...

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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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