A tight core imbibition test device and imbibition test method
A test method and core technology, applied in the fields of measurement device, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problem of large influence of balance measurement, no consideration of reservoir temperature and pressure conditions, and no consideration of reservoir pressure and permeability. The effect of suction and other problems to achieve the effect of improving the measurement accuracy
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Embodiment 1
[0030] This embodiment provides a compact rock core imbibition experimental device, including an injection unit 11, a rock core chamber 14 and a metering unit 12, the injection unit 11 is used for injecting imbibition liquid into the rock core chamber 14 and controlling the amount of displacement fluid after imbibition To discharge, the core chamber 14 is used to simulate the core imbibition process under reservoir conditions, and the metering unit 12 is used to measure the core imbibition amount;
[0031] The injection unit 11 and the metering unit 12 communicate with the core chamber inlet 24 and the core chamber outlet 25 respectively, and the core chamber 14 is equipped with a core chamber pressure gauge 13 .
[0032] The tight core imbibition experimental device provided in this embodiment considers the sensitivity of the tight core 23 to temperature and pressure, and the core chamber 14 can be pressurized and heated, so that the imbibition test can be carried out under ac...
Embodiment 2
[0034] On the basis of embodiment 1, this embodiment provides a kind of figure 1In the shown tight core imbibition test device, the injection unit 11 includes an inert gas tank 111 and a liquid reservoir 115, and the inert gas tank 111 is connected in parallel with the inlet of the liquid reservoir 115 and the inlet of the core chamber 24, and the liquid reservoir The outlet of 115 is connected to the inlet 24 of the rock core chamber, and a gas inlet control valve 118 is provided between the inlet 24 of the rock chamber and the inert gas tank 111, and a liquid reservoir inlet control valve 118 is provided between the inert gas tank 111 and the inlet of the liquid reservoir 115. A valve 116, and a reservoir outlet control valve 117 is provided between the outlet of the reservoir 115 and the inlet 24 of the rock chamber.
[0035] In this embodiment, the injection unit 11 further includes a compensation pump 113, and the compensation pump 113 communicates with the liquid reservo...
Embodiment 3
[0041] On the basis of embodiment 1 or embodiment 2, this embodiment provides a kind of dense rock core imbibition experiment device, described rock core chamber 14 comprises a sealed container, and a fixed sealing rubber sleeve is fixed inside the sealed container, and the The fixed sealing rubber sleeve is provided with a core holder 21, the inner surface of the core holder 21 has a core rubber sleeve 22, and the sealed container is provided with a confining pressure inlet 27, and the fixed sealing rubber sleeve and the sealed container There is a gap between them, the confining pressure inlet 27 extends into the gap, the core chamber inlet 24 and the rock core chamber outlet 25 are connected to a fixed sealing rubber sleeve, and a temperature sensor 26 is fixed outside the sealed container, and the temperature sensor The probe of 26 stretches in the fixed sealing rubber sleeve.
[0042] like figure 2 As shown, the core rubber sleeve 22 is fixed by the core holder 21, and ...
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