Phase-change sandstone reservoir physical model material and phase-change sandstone reservoir physical model and preparation method

Abstract

Belonging to the field of geophysical exploration, the invention more specifically relates to a phase change sandstone reservoir physical model material, a phase change sandstone reservoir physical model and a preparation method. The phase change sandstone reservoir physical model material comprises the following components: 100 weight parts of Portland cement; 100-400 weight parts of quartz sand(30 meshes); 100-300 weight parts of quartz sand (60 meshes); 50-200 weight parts of quartz sand (120 meshes); 120-240 weight parts of water; 0.5-2 weight parts of a water reducer; 0.2-1 weight part of a defoamer; 80-120 weight parts of epoxy resin; 30-70 weight parts of a curing agent; and 80-120 weight parts of phase change paraffin. The phase change sandstone reservoir model provided by the invention can control the fluid state inside the reservoir by controlling temperature. The sandstone reservoir model has good penetrability, and effective reflection signals can be obtained.

Description

technical field [0001] The invention belongs to the field of geophysical exploration, and more specifically relates to a phase-change sandstone reservoir physical model material, a phase-change sandstone reservoir physical model and a preparation method. Background technique [0002] Earthquake physical simulation is to use ultrasonic waves to simulate field seismic waves in the laboratory, and to excite and receive signals through ultrasonic transducers. It is an effective means to study the laws of seismic wave propagation. Physical models that conform to actual geological structures or different reservoir types are made in the laboratory. To study the kinematics and dynamics characteristics of seismic waves in complex structures and complex reservoirs, the materials for making physical models must have certain geological characteristics. Now major institutions and universities mainly use epoxy resin and silicone rubber to synthesize seismic physical models Material, by ch...

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Problems solved by technology

[0003] One is that epoxy resin and silicone rubber can prepare seismic physical simulation materials with different acoustic wave propagation speeds under the action of external additives, which can be well used for simulation and research of geological structures, but cannot simulate reservoirs with pore structures geological properties

[0004] Second, although the composite material made of epoxy resin and quartz sand and other granular materials has certain pore characteristics, it is difficult for the fluid medium to penetrate in, and it is impossible to conduct saturated fluid experiments, and it is impossible to truly simulate and study the reservoir fluid characteristics.

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