A two-dimensional microscopic visual displacement simulation experiment system for heavy oil and its application method

A displacement simulation and experimental system technology, applied in earth-moving drilling, production fluids, wellbore/well components, etc., can solve the problems of micro-saturation difficulties, high viscosity of heavy oil, and little research on heavy oil, etc. The effect of high work efficiency and low experimental cost

Active Publication Date: 2017-01-25
PETROCHINA CO LTD
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Problems solved by technology

[0002] Understanding and mastering the mechanism of oil and gas development is very important for writing efficient development plans for oilfields. Many scholars at home and abroad have conducted research on the mechanism of various oil recovery methods in reservoirs, but most of them are aimed at thin oil and thick oil. Little research has been done on oil
The main reason is that due to the relatively high viscosity of heavy oil, it is very difficult to microscopically saturate it. A small number of research personnel also use oil diluted according to the viscosity ratio of underground oil and water to carry out experiments, so it is impossible to truly understand the displacement of heavy oil reservoirs. Alternative mechanism

Method used

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  • A two-dimensional microscopic visual displacement simulation experiment system for heavy oil and its application method
  • A two-dimensional microscopic visual displacement simulation experiment system for heavy oil and its application method
  • A two-dimensional microscopic visual displacement simulation experiment system for heavy oil and its application method

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Embodiment 1

[0086] Aiming at the middle and late stages of the development of medium-deep type II heavy oil reservoirs, according to the current technical level is not suitable for steam flooding and SAGD and other technology development, research and development of practical and effective multi-thermal fluid replacement technology for heavy oil reservoirs. One of the research ideas is to reveal the displacement mechanism of the multi-component thermal fluid development and replacement technology for heavy oil reservoirs. Therefore, for the Jin 45 II heavy oil reservoir, the heavy oil two-dimensional microscopic visualization displacement simulation experimental system provided by the present invention is used to separately The research on the development technology mechanism of hot water flooding, urea flooding and urea foam flooding has been carried out, and two-dimensional microscopic visualization flooding experiments of 80℃ hot water flooding, 150℃ urea flooding and 150℃ urea+foam floo...

Embodiment 2

[0102] The problems existing in the process of water injection development in Lukeqin Oilfield, Turpan-Hami Basin are: due to the high viscosity of crude oil in the formation, the large water-oil mobility ratio, and the serious heterogeneity, when the reservoir formation is developed by water injection, the injection water will be The uneven advancement of the high-permeability layer results in low sweeping degree of the medium-low permeability layer and poor oil displacement effect, which seriously affects the development effect of water flooding. Therefore, the research on the deep profile control technology of air foam flooding was carried out. Therefore, for the Tuha heavy oil reservoir, this two-dimensional microscopic visualization physical simulation experiment method was used to carry out the research on the development technology mechanism of air foam + oil displacement agent + viscosity reducer flooding. , using the crude oil from the Tuha heavy oil reservoir to carry...

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Abstract

The invention provides a two-dimensional microcosmic visual thickened oil replacement simulation experiment system and a use method thereof. The two-dimensional microcosmic visual thickened oil replacement simulation experiment system comprises a microcosmic simulation experiment device, a visual data acquisition device, a support device, a multivariate thermal fluid injection device, a confining pressure tracking device and a metering device, wherein the microcosmic simulation experiment device comprises a heating jacket, a clamper and a plate glass microcosmic model; the visual data acquisition device comprises a microscopic shooting device and a computer; the multivariate thermal fluid injection device comprises an ISCO injection pump, an oven and a replacement medium intermediate container, a water intermediate container, a thickened oil intermediate container, a first heat traced pipeline and a bypass pipeline; the confining pressure tracking device comprises an annular pressure tracking pump, an annular pressure tracking pump pressure meter, a vacuum pump and a first vacuum valve. The two-dimensional microcosmic visual thickened oil replacement simulation experiment system give full consideration to characteristics of the thickened oil reservoirs, provides convenience for research on a thickened oil replacement mechanism through microcosmic experiments, has the advantages of low experiment cost, high work efficiency and the like, and can meet with demands on development and research of the thickened oil reservoirs.

Description

technical field [0001] The invention relates to the technical field of laboratory experiments in oilfield development, in particular to a two-dimensional microscopic visualization displacement simulation experiment system for heavy oil and a method for using the same. Background technique [0002] Understanding and mastering the mechanism of oil and gas development is very important for compiling efficient oilfield development plans. Many scholars at home and abroad have carried out research on the mechanism of action of various oil recovery methods in oil reservoirs, but most of them are for thin oil and heavy oil. There is very little research on oils. Mainly due to the relatively high viscosity of heavy oil, it is very difficult to saturate microscopically. A small number of researchers also use the oil diluted by the underground oil-water viscosity ratio to conduct experiments, so they cannot truly understand the flooding of heavy oil reservoirs. alternative mechanism. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/24
CPCE21B43/16
Inventor 张运军沈德煌王红庄蒋有伟李秀峦张世民黄玖高李军辉李杰朱建文董志国
Owner PETROCHINA CO LTD
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