A system and method for adding emulsion-type drag-reducing water on site

Abstract

The invention provides a system and method for on-site adding of emulsion-type anti-drag water and belongs to the field of oil-gas filed exploration and development. The system for on-site adding of the emulsion-type anti-drag water comprises a connector, a diaphragm pump and a rotor pump. The connector comprises a pipeline short section and an injection short section. The upper end of the pipeline short section is connected with a suction inlet of a fracturing blending truck, and the lower end of the pipeline short section is connected with a water incoming pipeline of a fracturing liquid tank. One end of the injection short section is fixedly connected to the pipe wall of the pipeline short section, an inner cavity of the injection short section communicates with an inner cavity of the pipeline short section, and the other end of the injection short section is connected with a discharge port of the diaphragm pump or a discharge port of the rotor pump. A suction inlet of the diaphragm pump is connected with an anti-drag agent tank, and a suction inlet of the rotor pump is connected with an anti-swelling agent tank or a discharging assisting agent tank.

Description

technical field [0001] The invention belongs to the field of oil and gas field exploration and development, and in particular relates to a system and method for adding emulsion-type drag-reducing water on site, which is used to increase the fracturing volume of shale gas horizontal wells. Background technique [0002] At present, the most important production stimulation measure for foreign shale gas development is to use drag-reducing water fracturing fluid for volume stimulation. The drag reducing water fracturing fluid system is a new fracturing fluid system developed for shale gas reservoir stimulation. Drag-reducing water fracturing fluid refers to a fracturing fluid in which a very small amount of drag reducing agent, surfactant, clay stabilizer and other additives are added to clean water, also known as slippery water fracturing fluid. In the United States, Canada and other countries, the use of drag-reducing water fracturing fluid has achieved significant economic b...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and provide a system and method for adding emulsion-type drag reducing water on site, aiming at the blockage of the drag reducing agent injection pump and pipeline blockage that often occur when injecting drag reducing water in fracturing construction To achieve the goal of mixing drag-reducing water on-line with emulsion-type drag reducing agents, greatly improve the construction timeliness, greatly reduce production waste caused by rain, fog and other factors, and maximize the potential of shale gas reservoirs to increase production. Improve the success rate of fracturing

Images