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Unconventional compact sandstone reservoir oil-bearing property and mobility evaluating experiment method

An experimental method and technology for tight sandstone, which are applied in the oil-bearing and mobility evaluation experiments of unconventional tight sandstone reservoirs, and the field of unconventional oil and gas geological analysis experiments. test, etc.

Active Publication Date: 2017-01-04
PETROCHINA CO LTD +1
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Problems solved by technology

However, none of these methods can solve the problem of quantitative simulation and testing of free oil and adsorbed oil in tight sandstone

Method used

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  • Unconventional compact sandstone reservoir oil-bearing property and mobility evaluating experiment method
  • Unconventional compact sandstone reservoir oil-bearing property and mobility evaluating experiment method
  • Unconventional compact sandstone reservoir oil-bearing property and mobility evaluating experiment method

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Embodiment Construction

[0058] The present invention proposes an experimental method for oiliness and mobility evaluation of unconventional tight sandstone reservoirs, which mainly uses quantitative simulation experiment technology to detect different oily tight sandstone samples, including airtight, vacuum, formation temperature, pressure, bound Under water conditions, the gas displacement test method is used to measure the evaluation parameters related to free oil, and the supercritical extraction test method is used to measure the evaluation parameters related to adsorbed oil, so as to achieve the purpose of evaluating the oiliness and mobility of unconventional reservoirs and meet the requirements of unconventional reservoirs. The demand for geological experiments in oil and gas exploration and development. According to the experimental method of the present invention, the performance parameters of oil in different occurrence states of unconventional tight sandstone reservoirs include free oil con...

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Abstract

The invention discloses an unconventional compact sandstone reservoir oil-bearing property and mobility evaluating experiment method. The properties of different occurrence states of oil of an unconventional compact sandstone reservoir can be evaluated by adopting a pressure-maintaining airtight coring method, and the problem that determination of the free oil and adsorbed oil and oil-bearing property and mobility evaluation of an unconventional compact oil-gas exploration sandstone reservoir are difficult is solved. Free oil is not lost due to pressure reduction, degassing or even long-term placement of reservoir sandstones, free oil testing results can simulate underground situations, the objective evaluation of the oil-bearing property, mobility and yield of compact sandstones is achieved, and a new experiment measure and a basis are provided for effective employment, reserves, exploration and development of different occurrence states of oil of the unconventional compact sandstone reservoir.

Description

technical field [0001] The invention relates to an unconventional oil and gas geological analysis experimental method, in particular to an unconventional tight sandstone reservoir oil-bearing and mobility evaluation experimental method, which belongs to the field of unconventional oil and gas exploration. Background technique [0002] In recent years, unconventional oil and gas resources such as tight oil and gas, shale gas, heavy oil, and oil sands have been developed on a large scale, and the global oil industry has entered a new stage in which both conventional and unconventional oil and gas resources are emphasized. Significant progress has been made in tight oil and gas in my country, with the discovery of the Sulige tight gas area in the Ordos Basin, the Gaotaizi and Fuyu tight oil layers in the northern Songliao Basin, etc. Tight oil and gas have become the most realistic unconventional oil and gas resources and are becoming important replacement resources. [0003] T...

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Application Information

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IPC IPC(8): G01N5/00G01N30/00G01N33/28G01N1/28
CPCG01N1/28G01N5/00G01N30/00G01N33/2823G01N2030/009
Inventor 张居和冯子辉霍秋立迟焕远李景坤张琨王淑芝郭伟王雪
Owner PETROCHINA CO LTD
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