A fracturing tracer simulation experimental device and experimental method

Abstract

The invention discloses a fracturing tracing simulation experimental device and an experimental method. The experimental device includes a fracturing fluid forward extrusion simulation system and a fracturing fluid flowback simulation system; the fracturing fluid forward extrusion simulation system includes an injection pump, an intermediate container, a storage layer simulation tank, high-pressure liquid tank, and gas cylinder; the fracturing fluid flowback simulation system includes sample bottles, back pressure valves, reservoir simulation tanks, high-pressure liquid tanks, and injection pumps; the reservoir simulation tank includes simulated fractures, simulated supply layers, Simulated reservoir: The simulated supply layer made of epoxy resin-consolidated large-size ceramsite is located at the edge of the reservoir simulation tank, which can simulate the energy replenishment of the far-well reservoir fluid to the near-well zone during the fracturing flowback stage. The experimental device of the present invention includes the process of simulating the extrusion of fracturing fluid into the formation and the flowback process of the fracturing fluid, and has the advantages of complete experimental functions and simple equipment operation, and can meet the requirements of experimental simulation of fracturing tracer technology.

Description

technical field [0001] The invention belongs to the technical field of physical simulation experiments of petroleum and natural gas, and relates to a fracturing tracing simulation experiment device and an experiment method. Background technique [0002] With the large-scale development of low-permeability, ultra-low-permeability, and tight oil and gas fields in my country, fracturing is the key technology to realize the efficient development of such reservoirs. Problems such as effective characterization, large deviation between actual formation of fracture network and simulation results. [0003] At present, the technical method of fracturing tracer has been applied to evaluate the fracturing effect in the mine field. However, due to the high complexity of this technology, purely theoretical research is often difficult to match the actual mine field. At present, the understanding of fracturing fluid flowback characteristics under different fracture shapes, different reservo...

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Problems solved by technology

[0002] With the large-scale development of low-permeability, ultra-low-permeability, and tight oil and gas fields in my country, fracturing is the key technology to realize the efficient development of such reservoirs. Problems such as effective characterization, large deviation between actual formation of fracture network and simulation results, etc.

[0003] At present, the technical method of fracturing tracer has been applied to evaluate the fracturing effect in the mine field. However, due to the high complexity of this technology, purely theoretical research is often difficult to match the actual situation of the mine field.

At present, the understanding of fracturing fluid flowback characteristics under different fracture shapes, different reservoir characteristics, and different flowback regimes is still in its infancy. It is difficult to quantitatively describe the fracturing fracture shape according to the fracturing fluid flowback characteristics. Simulation experiment device to assist theoretical research and field application of fracturing tracer technology

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