High-temperature high-pressure dry gas injection longitudinal wave and efficiency testing device and method for gas condensate reservoir

A technology for high temperature and high pressure, condensate gas reservoirs, which is applied in the fields of earthwork drilling, production of fluids, wellbore/well components, etc. It can solve problems such as inability to explore, incapable of physical simulation of gravity overlay phenomena, and inability to simulate production phenomena well. , to achieve the effect of overcoming phase change and overcoming test instability

Active Publication Date: 2015-04-29
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

At present, obvious gravity overriding phenomenon has been found in the dry gas circulation injection process of some condensate gas reservoirs, that is, in the process of horizontal flooding, a large amount of injected dry gas rises beyond the condensate gas reservoir and accumulates at the top of the condensate gas rese

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  • High-temperature high-pressure dry gas injection longitudinal wave and efficiency testing device and method for gas condensate reservoir
  • High-temperature high-pressure dry gas injection longitudinal wave and efficiency testing device and method for gas condensate reservoir

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Embodiment Construction

[0039] Further illustrate the present invention according to example below in conjunction with accompanying drawing.

[0040] see figure 1 .

[0041] Longitudinal sweep efficiency test device for dry gas injection in high temperature and high pressure condensate gas reservoirs, mainly composed of high pressure displacement pump 1, dry gas intermediate container 2, condensate gas sample intermediate container 3, formation water sample intermediate container 4, data acquisition system 11, high temperature It consists of a high-pressure plate model system 12, a back pressure controller 13, an oil-gas separator 14, and a gas meter 15.

[0042] see figure 2 .

[0043]The high-temperature and high-pressure flat model system 12 is mainly composed of a flat model 16, a model frame 17, a vertical lifting mechanism 18, a temperature control system 19, fastening bolts 21, fluid physical property test points 20, pressure sensors 24 and 25, and is located in the model The flat plate m...

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Abstract

The invention discloses high-temperature high-pressure dry gas injection longitudinal wave and efficiency testing device and method for a gas condensate reservoir. The device mainly comprises a high-pressure displacement pump, a medium container, a data acquiring system, a high-temperature and high-pressure slab model system, a backpressure controller, an oil-gas separator and a gas meter; the high-temperature and high-pressure slab model system mainly comprises a slab model, a model rack, a vertical lifting mechanism, a temperature control system, a fastening bolt, a fluid physical property testing point and a pressure sensor. The method comprises the steps of (1) manufacturing a sand filling model; (2) preparing a condensate gas sample and a formation water sample; (3) recovering the gas reservoir initial condition for the sand filling model; (4) injecting dry gas to replace condensate gas; (5) processing data, and calculating wave and efficiency. The device and method are reliable in principle, simple and convenient to operate, intuitive in measuring results, provide guidance suggestions to the condensate gas reservoir gas injection development effect and preparation of a development scheme, and have a wide application prospect.

Description

technical field [0001] The invention relates to a test device and method for longitudinal displacement sweep efficiency of dry gas injection in high temperature and high pressure condensate gas reservoirs in the field of petroleum and natural gas exploration and development. Background technique [0002] For condensate gas reservoirs with relatively high condensate oil content, the development method of circulating gas injection to maintain formation pressure is usually used to slow down the precipitation of condensate oil and increase the recovery of condensate oil. The recovery of condensate oil is mainly affected by the sweep efficiency of dry gas displacement, and the sweep efficiency directly determines the development effect of cyclic gas injection. At present, obvious gravity overriding phenomenon has been found in the dry gas circulation injection process of some condensate gas reservoirs, that is, in the process of horizontal flooding, a large amount of injected dry...

Claims

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Application Information

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IPC IPC(8): E21B43/18E21B49/00
CPCE21B43/168
Inventor 阳建平伍帅郭平罗玉琼陈一键汪周华杜建芬
Owner SOUTHWEST PETROLEUM UNIV
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