Liquidity evaluation method for super heavy oil doped liquefied petroleum gas, and matched device thereof

An evaluation method and technology for ultra-heavy oil, applied in gathering and transportation, and ultra-heavy oil exploitation, can solve problems such as no actual production application, and achieve the effects of small footprint, good safety, and convenient operation

Active Publication Date: 2019-07-09
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no reports at home and abroad on the experimental evaluation method and supporting equipment for the research on the production and transportation of super heavy oil mixed with LPG, and there is no actual production application

Method used

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  • Liquidity evaluation method for super heavy oil doped liquefied petroleum gas, and matched device thereof
  • Liquidity evaluation method for super heavy oil doped liquefied petroleum gas, and matched device thereof
  • Liquidity evaluation method for super heavy oil doped liquefied petroleum gas, and matched device thereof

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Experimental program
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Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawing.

[0028] The supporting experimental device of the present invention includes an LPG storage tank, and a cut-off valve V1 is set at the inlet and outlet of the storage tank; the experimental device includes an LPG injection and recovery pipeline composed of several valves and pipelines, and the LPG injection pipeline includes oil pipes, cut-off valves connected in sequence Valve V2, booster suction pump 3 and shut-off valve V5, the recovery pipeline includes oil pipes, shut-off valve V3, booster suction pump 3 and shut-off valve V4 connected in sequence, the injection and recovery pipelines share a booster pump, The injection and recovery of LPG are respectively realized through the switching of valves; the experimental device also includes an oil tank and its accessories, mainly including a motor 5, a connecting piece 6, an oil tank 8, a stirring paddle 9 and test fluid inlet...

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Abstract

The invention provides a liquidity evaluation method for super heavy oil doped LPG (Liquefied Petroleum Gas), and a matched LPG injection and recovery device thereof. The evaluation method provided bythe invention is mainly characterized in that the parameters, including the flow, the pressure difference and the like, of mixed liquid under a condition of different temperatures and different liquefied petroleum gas mixing amounts are tested to simulate pipe flow characteristics, the viscosity reduction and resistance reduction effect of the liquefied petroleum gas on the super heavy oil is analyzed so as to determine reasonable parameters, including mixing amount, operation temperature, pressure and the like, and a theoretical basis is provided for practical petroleum transmission pipelinetechnical design. By use of the matched device provided by the invention, different valves and equipment can be started and closed, under a totally airtight condition, the mixing of the liquefied petroleum gas and the super heavy oil as well as the recovery of the liquefied petroleum gas can be finished, and a circuit and a temperature control device can be conveniently cooperated so as to finisha mixed liquid liquidity evaluation experiment. The device has the advantages of high practicality, good safety, flexibility in operation, convenience in installation and transportation, no environment pollution and the like.

Description

technical field [0001] The invention relates to a method for evaluating the fluidity of super-heavy oil mixed with liquefied petroleum gas and an associated device thereof, belonging to the field of super-heavy oil exploitation, gathering and transportation. Background technique [0002] At present, heavy oil and tar sands account for more than 70% of the world's remaining oil resources, and my country's Xinjiang, Liaohe, and Shengli oilfields have found abundant heavy oil resources. With the continuous exploitation of conventional crude oil, the trend of heavy crude oil is becoming more and more obvious. Heavy oil has the characteristics of high viscosity and easy condensation, and its severe adhesion on the pipe wall brings great difficulties to the production and transportation of heavy oil. Thinning and viscosity-reducing technology of heavy oil (i.e. adding diluents such as light and low-viscosity oils to heavy oil to reduce the viscosity of heavy oil) can greatly impr...

Claims

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Application Information

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IPC IPC(8): G01N11/04
CPCG01N11/04
Inventor 敬加强孙杰邱伊婕熊小琴袁亮宋学华沈晓燕董正淼
Owner SOUTHWEST PETROLEUM UNIV
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