Patent ID: 9594038
Date: 2017-03-14
CPC Classifications: E21B,G01N

Claim:
1. A device for measuring a supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities, comprising: a supercritical carbon dioxide fracturing fluid throttling coefficient measurement system and a supercritical carbon dioxide fracturing fluid viscosity adjustment apparatus, wherein the supercritical carbon dioxide fracturing fluid throttling coefficient measurement system is configured to determine a throttling coefficient of a high temperature and high pressure supercritical carbon dioxide fracturing fluid, and the supercritical carbon dioxide fracturing fluid viscosity adjustment apparatus is configured to determine a viscosity of the high temperature and high pressure supercritical carbon dioxide fracturing fluid, wherein the supercritical carbon dioxide fracturing fluid throttling coefficient measurement system comprises a constant speed and constant pressure pump, a static mixer, a mass flow meter, an intermediate container, a first screwing valve, a thermal insulation throttling measurement apparatus, a back pressure control apparatus and a second screwing valve; wherein the constant speed and constant pressure pump, the static mixer, the mass flow meter, the intermediate container, the first screwing valve, the thermal insulation throttling measurement apparatus, and the second screwing valve are connected successively through a pipeline to form a closed circulation loop; the intermediate container is disposed in a thermostatic water bath, and the intermediate container is provided with an intermediate container pressure meter and an intermediate container thermometer; the thermal insulation throttling measurement apparatus comprises a cylindrical housing, a perforated plate, a first pressure meter, a first thermometer, a second pressure meter and a second thermometer; the perforated plate is filled with proppant particles and uniformly formed with hole channels on the circular surface of an outer wall thereof; the perforated plate is located in the middle of the cylindrical housing and vertical to the axis of the cylindrical housing; and the first pressure meter, the first thermometer, the second pressure meter and the second thermometer are respectively disposed on two sides of the perforated plate within the cylindrical housing; the supercritical carbon dioxide fracturing fluid is pumped into the static mixer, the mass flow meter and the intermediate container by the constant speed and constant pressure pump, flows into the thermal insulation throttling measurement apparatus through the first screwing valve and passes by the second screwing valve to form a closed circulation loop for measuring the supercritical carbon dioxide fracturing fluid throttling coefficient; and a first pipeline is the pipeline between the second screwing valve and the constant speed and constant pressure pump; the supercritical carbon dioxide fracturing fluid viscosity adjustment apparatus comprises: a third screwing valve, a measurement pipeline segment, a supercritical carbon dioxide booster apparatus and a thickening agent injection apparatus; the third screwing valve is on the pipeline between the intermediate container and the measurement pipeline segment; and the measurement pipeline segment is connected with the first pipeline through a second pipeline; and the supercritical carbon dioxide booster apparatus is coupled to the second pipeline; the thickening agent injection apparatus is coupled to the second pipeline; and the measurement pipeline segment is provided with a measurement pipeline segment differential pressure sensor.