Multiphase medium fracturing device for fluid testing and testing system

Abstract

The invention relates to the technical field of oil field fracturing testing, in particular to a multiphase medium fracturing device for fluid testing and a testing system. The device comprises a nickel-based alloy base, a nickel-based alloy main body arranged on the base, and a working channel for fixing the fracturing assembly is arranged in the main body. The fracturing assembly comprises an upper piston rod connected with the press machine and a lower piston rod arranged on the base and matched with the upper piston rod for work, and a fracturing cavity used for containing to-be-treated substance particles is formed between the two piston rods in the working channel. According to the invention, a dynamic stratum environment is simulated in a laboratory environment to carry out a rock core fracturing test. The method is simple, convenient and fast to operate, low in manufacturing cost and capable of achieving simulation testing in the high-temperature and high-pressure environment of a dynamic stratum, and the flow conductivity and permeability of the resin coating type propping agent for fracturing are obtained in a multi-point injection mode by adopting a natural rock core oran artificial rock core. Operation is easy, convenient and rapid, the manufacturing cost is low, and high practicability and application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of oil field fracturing testing, in particular to a multiphase medium fracturing device and testing system for fluid testing. Background technique [0002] Oilfield fracturing is one of the effective measures for oil well stimulation and water well injection. In order to ensure the effect of fracturing, the conductivity and permeability tests of resin-coated proppants for fracturing were carried out. At present, oilfield laboratories usually use standard diversion experimental devices to conduct this experiment. Due to the mismatch between the internal size of the diversion chamber and the size of the core drilled in China, the experimental device needs to be specially processed for the core. It is very difficult to import cores similar to oilfield formations from abroad. Usually, steel plates are used instead of cores in experiments, so the real environment of formations cannot be simulated; the diversion ...

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Problems solved by technology

It is very difficult to import cores similar to oilfield formations from abroad. Usually, steel plates are used instead of cores in experiments, so the real environment of formations cannot be simulated; the diversion chamber of this device has a single-directional linear flow, and the displacement distance is long. The viscosity of the displacement fluid is required to be less than 5mPa.s, for liquids with a viscosity greater than 100mPa.s, such as fracturing fluid, it is impossible to complete the corresponding displacement experiments; resin-coated curable proppants for fracturing are easy to form high-strength cohesive blocks in high-temperature environments , when taken out after the experiment, it will cause different degrees of damage to the inner wall of the diversion chamber; most of the domestic core displacement experiments use static experiments. There are few studies on dynamic core experiments

Based on the above factors, the existing diversion experimental device cannot meet the needs of core displacement experiments with high viscosity and acid-base fluids

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