Complex heavy oil reservoir oil solubility foaming agent intensified mixed gas huff-puff experimental equipment and application method thereof
A technology for mixing gas and heavy oil reservoirs, applied in the fields of fluid production, earthwork drilling, measurement, etc., can solve the problems of increased crude oil viscosity, decreased formation pressure, poor solubility, etc., to reduce viscosity, reduce dosage, avoid The effect of liquefaction
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Embodiment 1
[0101] An oil-soluble foaming agent enhanced mixed gas throughput experiment device for complex heavy oil reservoirs, comprising: a core holder, a formation water container and a live oil container are connected in parallel at the inlet of the core holder, and the core holder The outlet of the holder is connected in parallel with an oil-soluble foaming agent container and a mixed gas container; the outlet of the core holder is also sequentially connected with an artificial foam oil generation observation window, a back pressure valve and a gas-liquid separation device.
[0102] The gas-liquid separation device includes a separator, a high-precision electronic balance, a gas measurement system and a vacuum pump.
[0103] The core holder is an internal pressure measuring core holder; preferably, the pressure measuring points of the core holder are distributed on the core rubber sleeve of the core holder.
Embodiment 2
[0105] An experimental device for enhancing mixed gas huff and puff with oil-soluble foaming agent in a complex heavy oil reservoir as described in Example 1. The difference is that the length of the core holder is 1m-2m, and the inner diameter is 0.025m-0.075m .
Embodiment 3
[0107] As described in Example 1, a complex heavy oil reservoir oil-soluble foaming agent enhanced mixed gas huff and puff experiment device, the difference is that the artificial foam oil generation observation window includes a visible window outer body, in the visible window body Two thickened glasses are provided, a flow channel arranged in the middle of the thickened glass, a visible window inlet is arranged at one end of the flow channel, and a visible window outlet is arranged on the other end of the flow channel. The outer body of the window is connected with the thickened glass through a hollowed-out window. In practical applications, the artificial foam oil generation observation window can withstand pressure greater than 10 MPa and withstand temperature greater than 50°C. The artificial foam oil generating window is a cube, and the outer body size range of the window is 60-100mm in width, 140-180mm in length, and 40-60mm in height; the visible size range of the windo...
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