Condensate gas reservoir blockage relieving physical simulation experimental device and condensate gas reservoir blockage relieving physical simulation experimental method
A condensate gas reservoir and physical simulation technology, applied in the field of condensate gas reservoir plugging removal physical simulation experimental equipment, can solve the problems of heavy on-site workload, high cost of injecting natural gas, affecting the normal production time of gas wells, etc., to meet the production requirements , The effect of easy operation
Pending Publication Date: 2016-01-13
CHINA PETROLEUM & CHEM CORP +1
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[0003] The purpose of the present invention is to provide a condensate gas reservoir plugging removal method for the defects of the above-mentioned prior art, such as large on-site workload, influence on t
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[0019] The present invention will be further described below in conjunction with the accompanying drawings.
[0020] Depend on figure 1 It can be seen that the present invention provides a physical simulation experiment device for removing plugging of condensate gas reservoirs. The experimental device is composed of a real model of condensate gas reservoirs, an injection system, a recovery system, and a data analysis system, wherein:
[0021] The condensate gas reservoir model is composed of two core holders 1a and 1b connected in series. The core holder 1a is installed with the core 1h for simulating the main model of the gas reservoir, and the core holder 1b is installed with the core 1i for simulating the near-wellbore zone model. The core holders are wrapped with adjustable constant temperature heaters; the core holders 1a and 1b are respectively provided with pressurized holes 1c and 1d, which are connected through pressurized pipelines, and ring pressure metering pumps a...
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The invention relates to a condensate gas reservoir blockage relieving physical simulation experimental device and a condensate gas reservoir blockage relieving physical simulation experimental method, and belongs to the technical field of oil field development experiment. The experimental device consists of a condensate gas reservoir model, an injection system, a production system and a data analysis system. The experimental device is used for performing preparation for simulating a rock core of a gas layer main model and simulating a rock core of a near wellbore zone model; the prepared rock cores are subjected to vacuum pumping and saturated gas condensation; a condensate gas reservoir blockage relieving experimental model is built; condensate gas reservoir seepage flow passage blockage simulation experiments and blockage relieving simulation experiments are performed; a condensate gas reservoir blockage relieving scheme is made according to obtained experimental data; the stratum temperature, the pressure and the depletion development process of the condensate gas reservoir can be simulated in a laboratory; the dynamic simulation of the depressurizing production and the gas injection swallowing-spitting blockage relieving of the condensate gas reservoir is realized; the blockage relieving gas injection quantity and the injection period of the simulated condensate gas reservoir are determined; the operation is simple and convenient; the implementation is easy; and the investment of a large amount of labor, materials and money on site is not needed.
Description
technical field [0001] The invention relates to a physical simulation experiment device and an experiment method for plugging removal of condensate gas reservoirs, belonging to the technical field of oilfield development experiments. Background technique [0002] During the development of condensate gas reservoirs, when the pressure drops below the dew point, natural gas will turn into liquid and be precipitated in the form of condensate oil, which is the phenomenon of reverse condensation. The accumulation of reverse condensate in the area near the well will block the seepage channel of the formation, reduce the productivity of the gas well, and have an important impact on the development of the gas reservoir. Therefore, the key to the development of the condensate gas reservoir is to remove the plugging of the condensate gas reservoir question. The patent with the application number 200410081127.7 discloses a method of huffing and puffing gas injection in condensate gas w...
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Inventor 李中超杜利许寻聂法健王进安王明周志龙罗松刚
Owner CHINA PETROLEUM & CHEM CORP
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