Fractured extra-low-permeability reservoir dynamic imbibition stimulation experiment device and application thereof

A technology for simulating cracks and experimental devices, used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve problems such as the inability to simulate dynamic imbibition well

Active Publication Date: 2017-02-01
RES INST OF SHAANXI YANCHANG PETROLEUM GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]After the rock sample is processed into a standard rock sample, the volume method or mass method is used to measure the water absorption and oil discharge of the rock, which is the main method of imbibition experiment at present, but the static Spontaneous imbibition experiments cannot simulate the dynamic imbibition phenomenon that occurs during water flooding in fractured ultra-low permeability reservoirs;

Method used

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  • Fractured extra-low-permeability reservoir dynamic imbibition stimulation experiment device and application thereof
  • Fractured extra-low-permeability reservoir dynamic imbibition stimulation experiment device and application thereof
  • Fractured extra-low-permeability reservoir dynamic imbibition stimulation experiment device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 shown.

[0047] An experimental device for simulating dynamic seepage in fractured ultra-low permeability reservoirs, including a confining pressure pump 1, a constant flow pump 3 and a constant temperature box 6;

[0048] The constant temperature box 6 is provided with an intermediate container 13, a core imbibition chamber 14, an oil-water metering module 15 and a heating device 7;

[0049] The oil-water metering module 15 includes a water metering device 16 and an oil metering device 17 communicated through a fourth communication valve 20; the top opening of the rock core imbibition chamber 14 is communicated with the oil-water metering module 15, and the bottom opening of the rock core imbibition chamber is connected to There is a second strain sensor 22;

[0050] The side wall on the upper side of the core imbibition chamber is connected with a first stress sensor 23, and the first stress sensor 23 is connected with the confining pressure pump 1;...

Embodiment 2

[0053] The experimental device for simulating dynamic imbibition of fractured ultra-low permeability reservoirs as described in Example 1, the difference is that the constant-flow pump is connected with a constant-flow pump oil supply bottle 4 .

Embodiment 3

[0055] The experimental device for simulating dynamic imbibition of fractured ultra-low permeability reservoirs as described in Example 1, the difference is that a light source 9 and a temperature sensor 10 are also arranged in the constant temperature box 6, and the temperature sensor 10 is fixed On the top of the constant temperature box 6 , the temperature sensor 10 is connected with a temperature display 11 ; the wall of the constant temperature box 6 is provided with a vent 8 . The temperature sensor 10 is used to measure the temperature of the constant temperature box 6 . Vent 8 is set, and by air convection, the temperature in the thermostat box 6 is kept constant; secondly, if vent 8 is not provided, a closed space will be formed in the thermostat box 6, when the air in the closed space is heated , the air heating and expansion may change the air pressure in the constant temperature box 6, forming a hidden danger of high pressure.

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Abstract

The invention relates to a fractured extra-low-permeability reservoir dynamic imbibition stimulation experiment device and application thereof. The device comprises a confining pressure pump, a constant flow pump and a constant temperature tank body, wherein an intermediate container, a core imbibition chamber, an oil-water metering module and a heating device are arranged in the constant temperature tank body; the oil-water metering module comprises a water quantity metering device and an oil quantity metering device which are communicated with each other through a fourth communication valve; an opening formed in the top end of the core imbibition chamber is communicated with the oil-water metering module, and an opening formed in the bottom end of the core imbibition chamber is communicated with the constant flow pump through the intermediate container. The device can measure the change relation of imbibition oil production of different-physical-property low permeability-extra-low permeability cores at a certain temperature and pressure along with time; furthermore, the effects of different parameters of fracture size, water drive speed and water drive period on the imbibition amount can be researched.

Description

technical field [0001] The invention relates to an experimental device for simulating dynamic imbibition of fractured ultra-low permeability reservoirs and its application, belonging to the technical field of water drive development of fractured ultra-low permeability reservoirs. Background technique [0002] Fractured low-permeability and ultra-low-permeability reservoirs commonly exist in many domestic oilfields, and are the main potential areas for oil and gas field development at present; compared with conventional pore-type reservoirs, fractured ultra-low-permeability reservoirs are more There are essential differences in mechanism; water injection development is the only way to develop such reservoirs. However, due to the tight reservoir matrix and poor water absorption capacity, the oil displacement efficiency of the fracture system is high, and the oil displacement efficiency of the matrix system is low. In the middle and late stages of production, large-scale remain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/082
Inventor 王香增王成俊蒲春生谷潇雨李晓宋俊强
Owner RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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