Experimental device for simulating heavy oil reservoir gas auxiliary steam thermal oil recovery and special model system thereof

A model system and gas-assisted technology, applied in the field of indoor physical simulation experimental devices, can solve the problems of little reference significance of experimental results and large differences in development status

Active Publication Date: 2013-06-19
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The displacement experiment is mainly applied to the one-dimensional sand-packing tube experiment. The one-dimensional sand-packing tube experiment can only simulate the linear displacement experiment, which

Method used

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  • Experimental device for simulating heavy oil reservoir gas auxiliary steam thermal oil recovery and special model system thereof
  • Experimental device for simulating heavy oil reservoir gas auxiliary steam thermal oil recovery and special model system thereof
  • Experimental device for simulating heavy oil reservoir gas auxiliary steam thermal oil recovery and special model system thereof

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Experimental program
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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0033] Such as figure 1 and figure 2 As shown, a model system for simulating gas-assisted steam thermal oil recovery in heavy oil reservoirs provided by the present invention includes a cylindrical shell 31, which is a double-layer structure, and the inner layer is an insulating sleeve 36 to reduce the number of experiments. heat loss in the process. The openings at both ends of the cylindrical barrel 31 are respectively sealed and fitted with the upper cover 28 and the piston 35, and both are sealed and fitted with an O-ring 38; the upper cover 28 is fixedly connected with the cylindrical barrel 31 through a nut 30, and the piston 35 is fixed by the piston. The pressing cap 33 is fixedly connected with the cylinder body 31 . 17 fluid inlets and outlets 29 are arranged on the loam cake 28, and t...

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Abstract

The invention discloses an experimental device for simulating heavy oil reservoir gas auxiliary steam thermal oil recovery and a special model system of the experimental device. The model system consists of a cylinder body. Openings at both ends of the cylinder body are respectively matched with an upper cover and a piston in a sealing mode. The piston is fixed on the cylinder body through a piston fixed pressing cap. At least one fluid in-out hole is formed in the upper cover, and the fluid in-out hole extends to a cavity of the cylinder body and connected with a well model connecting port. The well model connecting port is used for connecting well models. At least one data acquisition port is arranged on the cylinder body. The data acquisition port extends to the cavity of the cylinder body, the piston fixed pressing cap is provided with a liquid inlet, and the liquid inlet extends to a cavity between the piston and the piston fixed pressing cap. The experimental device can carry out precise experiments over a production increasing mechanism and an effect of gas improving steam stimulation and steam drive, the experimental results are genuine and believable, and the device has an important significance for gas auxiliary steam thermal oil recovery and development.

Description

technical field [0001] The invention relates to an experimental device for simulating gas-assisted steam thermal recovery of heavy oil reservoirs and a special model system thereof, belonging to indoor physical simulation experimental devices in the field of oil and gas field development. Background technique [0002] The high viscosity of crude oil has become the main factor restricting the development of heavy oil fields. It is difficult to develop heavy oil fields economically and effectively by using conventional technologies. However, the viscosity of heavy oil is very sensitive to temperature. As the temperature rises, the viscosity drops sharply. It has become the main method of heavy oil production at present. Due to the limited amount of steam injection and heat carrying capacity of steam, the heating radius of the reservoir is limited. Domestic and foreign theoretical and field test studies have shown that mixed injection of steam and gas into the formation is an e...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B43/22
Inventor 梁丹冯国智曾祥林房茂军杨俊茹蒋珊珊
Owner CHINA NAT OFFSHORE OIL CORP
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