A method for measuring co in three-dimensional seepage process 2 Soluble surfactants in co 2 Concentration distribution device and method in water system
A surfactant and concentration distribution technology, applied in the direction of measuring devices, material separation, and analysis of materials, can solve the problems of no measurement and achieve high accuracy and simple operation
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Embodiment 1
[0025] Embodiment 1: as figure 1 , 2 As shown, a method for measuring CO in three-dimensional seepage process 2 Soluble surfactants in CO 2 A device for concentration distribution in a water system, including a square three-dimensional core model 1 filled with quartz sand; the three-dimensional core model 1 includes a square metal shell 9-4, and the length, width, and thickness of the shell 9-4 are respectively 100cm . There are 21 sampling ports 8 on the top surface and one side of the three-dimensional core model 1 respectively, a total of 42 sampling ports 8, and the three-dimensional core model 1 is surrounded by a heating insulation jacket.
[0026] The inlet of the three-dimensional core model 1 is connected to a phase-parallel emulsion generator and a crude oil injection device through a six-way valve 7, and the inlet of the emulsion generator is connected to a phase-parallel CO 2 Gas injection device and surfactant injection device; the outlet end of the three-dime...
Embodiment 2
[0028] Embodiment 2: a kind of method described in embodiment 1 measures CO in the three-dimensional seepage process 2 Soluble surfactants in CO 2 The measuring method that the device of concentration distribution in the / water system carries out, comprises the following steps:
[0029] Step 1, heating the core temperature of the three-dimensional core model 1 to 30°C-90°C, and maintaining the temperature for 10-12 hours, and then setting the back pressure to the back pressure valve 10 through the gas source bottle 11 to add confining pressure to the core ;Set the back pressure to 10MPa, which is the outlet pressure of the sand-packing model, which determines the reservoir conditions where the sand-packing model is located;
[0030] Step 2, vacuumize the core of the three-dimensional core model 1 and saturate it with water, then pump crude oil into the core at a flow rate of 1ml / min until the core is displaced by crude oil to the state of irreducible water;
[0031] Step 3, ado...
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