High-temperature and high-pressure fluid solid-phase precipitation amount measuring device and method

Abstract

The invention discloses a high-temperature and high-pressure fluid solid-phase precipitation amount measuring device and method. The high-temperature and high-pressure fluid solid-phase precipitationamount measuring device takes a high-low temperature alternating test box and a volume-variable high-pressure reaction kettle with a stirring function as cores, and comprises a reaction kettle system,a stirring system, a sample transferring system and a measuring system. The high-temperature and high-pressure fluid solid-phase precipitation amount measuring device is characterized by: measuring the mass and solid phase mass percentage of an experimental fluid by configuring the experimental fluid to be measured; transferring a sample from the sample transferring cylinder to a reaction kettlein a pressure maintaining manner, and starting to cool the reaction kettle after sample transferring; after the experimental temperature is reached, discharging a certain amount of supernatant, measuring the mass of the supernatant and the solid-phase mass percentage at the temperature, and calculating to obtain the solid-phase precipitation amount at the temperature; and after the steps are repeated, a relation curve of the solid-phase precipitation amount and the temperature under the pressure can be obtained, and a relation curve of the solid-phase precipitation amount and the temperature under different pressures can be obtained by changing the pressure. According to the high-temperature and high-pressure fluid solid-phase precipitation amount measuring device and the method, the solid-phase precipitation amounts of the fluid at different temperatures, pressures and time can be conveniently determined, the experimental process is simplified, and the experimental data precision is improved.

Description

technical field [0001] The invention relates to the technical field of petroleum instruments, in particular to a device and method for measuring the amount of solid-phase precipitation of a high-temperature and high-pressure fluid. Background technique [0002] In the process of petroleum development and production, the problem of solid phase precipitation is a serious problem faced by oil and gas well production. Solid phase precipitation includes: precipitation of wax, benzene, scale, colloid, asphaltenes, and salts. The precipitation of wax, benzene, colloid, asphaltenes, and salts refers to the precipitation of wax, benzene and other molecules in the fluid when the temperature of the fluid is lower than the temperature of the solid phase precipitation point. Scale precipitation means that when the ion concentration in the water exceeds the concentration potential, the ions in the water will be precipitated. When the content of asphaltene and colloid in the fluid is hig...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a high-temperature and high-pressure fluid solid-phase precipitation measurement device and method, aiming to solve the technical problems of high-temperature and high-pressure fluid solid-phase precipitation measurement experimental process is cumbersome and experimental results are inaccurate in the prior art

Images