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Experimental device and method of super heavy oil reservoir steam-nitrogen-viscosity reducer composite steam stimulation

An experimental device and viscosity reducer technology, applied in the oil and gas field, can solve difficult process simulation and parameter optimization problems, and achieve the effect of injection-production parameter optimization

Inactive Publication Date: 2015-08-26
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

At present, the research on steam-nitrogen-viscosity reducer composite huff and puff technology is still in its infancy, and the existing physical simulation experimental equipment is difficult to achieve accurate and comprehensive process simulation and parameter optimization

Method used

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  • Experimental device and method of super heavy oil reservoir steam-nitrogen-viscosity reducer composite steam stimulation

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Such as figure 1 As shown, a kind of super-heavy oil reservoir steam-nitrogen-viscosity reducer compound huff and puff simulation experimental device of the example of the present invention includes an injection system, a model system, an output metering system and a data acquisition system, consisting of advection pump 1, constant pressure Pump 2, vacuum pump 3, steam generator 4, piston intermediate container 5-9, phase mixer 10, sand filling model 11, constant temperature box 12, ultrasonic separation measuring cylinder 13, ultrasonic generator 14, electronic balance 15, computer 16, pressure Sensors 38-52, temperature sensors 53-59, flowmeters 35-37, inlet and outlet valves 17-33, back pressure valve 34 and heat preservation pipelines.

[0036] Among them, the piston intermediate container 5 is a nitrogen piston intermedia...

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Abstract

The invention discloses an experimental device and method of super heavy oil reservoir steam-nitrogen-viscosity reducer composite steam stimulation. The device comprises an injection system, a model system, a constant-temperature control system, an output metering system and a data collection system. The injection system comprises a steam injection device, a gas buffer device, a viscosity reducer injection device and an oil and water saturation device which are connected in parallel, and the outlet ends of all the devices are connected with the model system. The model system is arranged in the constant-temperature control system, the inlet end of the model system is connected with the injection system, and the outlet end of the model system is connected with the output metering system. The output metering system comprises a return pressure control device and an ultrasonic oil and water separating and metering device, one end of the return pressure control device is connected with an outlet of the model system, and the other end of the return pressure control device is connected with the ultrasonic oil and water separating and metering device. The data collection system comprises a pressure sensor, a temperature sensor, a flowmeter, an electronic scale, a computer data collection system and a data analysis system, and the computer data collection system and the data analysis system achieve data collection and calculation.

Description

technical field [0001] The invention belongs to the technical field of petroleum and natural gas, and relates to an experimental device and an experimental method for composite huffing and puffing of steam-nitrogen-viscosity reducer in super-heavy oil reservoirs. technical background [0002] Heavy oil is an important unconventional oil and gas resource. After more than 30 years of development, heavy oil has become an important part of my country's oil production, with an annual output of more than 10 million tons. Thermal recovery is the most widely used technology in the development of heavy oil reservoirs. It mainly uses steam injection to reduce viscosity and improve the fluidity of crude oil, so as to extract heavy oil. At present, the commonly used thermal recovery technologies mainly include steam huff and puff, steam flooding, oil layer combustion, steam assisted gravity drainage (SAGD) for horizontal wells, and steam huff and puff assisted by carbon dioxide or visc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24E21B43/16E21B43/22
Inventor 孙仁远杨世凯杨元亮乔明全王学忠马瑞国黄爱先沈建新熊启勇杨之照陈洪程春杰徐婷杜殿发范坤坤刘冬冬纪云开雷少飞路永胜孙莹
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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