Liquid nitrogen pump equipment loading test and testing device and test and testing method thereof

Abstract

The invention discloses a liquid nitrogen pump equipment loading test and testing device and a test and testing method thereof, which are used for oil-gas field or coal bed gas nitrogen foam fracturing equipment tests. A waterpower damping device unit and a pressure regulation unit are specially arranged, wherein the waterpower damping device unit comprises a water tank, pump unit equipment and a pipe manifold system connected in turn; the pipe manifold system mixes normal-temperature high-pressure gaseous nitrogen from liquid nitrogen pump equipment and high-pressure water from the pump unit equipment to form a high-pressure liquid and gaseous mixture; and the pressure regulation unit pressurizes water discharged from the waterpower damping device unit by adjusting the flow of the high-pressure liquid and gaseous mixture. By loading through a waterpower loading device, the invention avoids technical difficulty and security risk brought by pressure loading of gas; the pressure regulation system is easy, convenient and accurate to operate; the nitrogen discharge of the liquid nitrogen equipment is controlled by a power transmission system and a fluid distribution system of the equipment per se without additional power; and the equipment cost and energy are saved.

Description

technical field [0001] The invention belongs to the technical field of nitrogen foam fracturing pump equipment for oil and gas fields or coalbed methane, and in particular relates to a liquid nitrogen pump equipment loading test and test device and its testing and testing method, which can discharge gas from liquid nitrogen pump equipment in nitrogen foam fracturing equipment Loading and liquid nitrogen pump equipment machine test device, used for discharge flow test, discharge nitrogen pressure loading, testing and testing of liquid nitrogen pump equipment. Background technique [0002] Nitrogen foam fracturing is a new technology developed on the basis of hydraulic fracturing technology, especially suitable for the reconstruction of low pressure, low permeability and water sensitive formations in the process of oil and gas fields and coalbed methane development. It is also widely used in the field of coalbed methane nitrogen flooding development technology. In the existin...

AI Technical Summary

Problems solved by technology

For the testing and testing of high-pressure, large-displacement liquid nitrogen pump equipment, if the above-mentioned direct pressurization method is used, a large pressure regulating valve is required to realize the adjustment of the discharge pressure, which is technically difficult to achieve.

On the other hand, direct pressure regulation of high-pressure and large-displacement gas has high safety risks in regulation and monitoring, resulting in high safety risks in the process of testing and testing.

Images