Device and method for measuring pitch particle profile control performance parameters

Abstract

The invention relates to a device and method for measuring pitch particle profile control performance parameters. The device mainly comprises a screwed pipe with large drift diameter, a turbulent flow generation tank, a perforation simulating unit and a near-wellbore stratum simulating unit, wherein the turbulent flow generation tank, the perforation simulating unit, the near-wellbore simulating stratum unit, and a columnar rock core to be measured all adopt cylinder structures and have same end face diameters; all end faces are connected end to end in sequence and are clamped for fixing by a rock core clamp holder; a profile control liquid passes each part in sequence and finally enters the columnar rock core to be measured smoothly. The device and the method are safe and reliable, can relatively truly simulate the movement state of pitch particles before and after entering the columnar rock core, efficiently overcome the defects that the particles are relatively seriously blocked in a rock core fracture surface and can not be injected, and realize research and effect evaluation of indoor profile control experiments using the pitch particles.

Description

technical field [0001] The invention relates to the technical field of profile control and water shutoff in the middle and late stages of water flooding oilfields, in particular to a device and a method for measuring the profile control performance parameters of asphalt particles. Background technique [0002] In the process of water flooding development of oilfields for many years, the pore structure, mineral composition, cementation type, etc. of underground reservoirs will change to varying degrees, especially in the case of high injection and production intensity, some of which have the characteristics of weak cementation and so on. The pore throat radius and cementation will increase and decrease, and the permeability of this area will increase. When the subsequent fluid passes through, it will form a dominant channel for water flooding, which will increase the water cut of the oil well. The faster the speed, the lower the water flooding swept coefficient, the higher th...

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a device and method for measuring performance parameters of asphalt particle profile control, which solves the problem that asphalt particles are easy to gather and block the entrance of the columnar core to be tested during the indoor asphalt particle profile control experiment. In order to solve the problem of the large difference between the indoor experiment and the real underground reservoir, and further improve the application technology of particle profile control in the indoor experiment

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