Analog measurement method and device of oil saturation in strata

A measurement method and saturation technology, applied in the field of geophysical exploration and testing, can solve the problems of lack of physical simulation, inability to accurately determine underground physical conditions, and low accuracy.

Inactive Publication Date: 2010-06-30
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the above method of determining the oil saturation in the rock formation lacks physical simulation and cannot accurately determine the physical conditions of the subsurface, so the accuracy is not high

Method used

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  • Analog measurement method and device of oil saturation in strata
  • Analog measurement method and device of oil saturation in strata
  • Analog measurement method and device of oil saturation in strata

Examples

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Effect test

Embodiment 1

[0270] The oil-water saturation distribution of different reservoir geological conditions with different types and properties of polymer flooding is given, and the oil displacement mechanism of various chemical displacement agents (polymer, binary and ternary) is deepened.

[0271] Using this technology, for the Pu I1- Pu I4 oil layers in the north first and second row of the Sazhong oilfield, the application of different chemical flooding (high concentration polymer, binary and ternary) after polymer flooding is carried out to further enhance the oil recovery technology. The distribution law of the remaining oil after a polymer flooding was studied in depth, and the oil-water saturation distribution in each stage of the polymer flooding was given. , the flow field changes of different chemical flooding; the distribution law and sweeping coefficient of remaining oil in different chemical flooding layers in different layers of heterogeneous oil layer are determined; the seepage ...

Embodiment 2

[0276] Studying the distribution of oil and water saturation during the displacement process is of great significance for deepening the understanding of the current situation of oilfield development, guiding the oilfield to finely tap potentials, further improving oil recovery, and guiding the subsequent polymer flooding in polymer injection blocks.

[0277] Using this technology, an experimental study of water accumulation and co-flooding in different connection modes was carried out for the second-class oil layer in the Beierxixi block of the Sabei Development Zone. The distribution of oil-water saturation in the process of water-accumulation and co-flooding under different connection modes is given, especially the variation law of oil-water movement and the variation of oil saturation at the water-accumulation contact zone. In the future, it will play a crucial role in guiding the adjustment of the polymer flooding program and improving the recovery factor of the second-clas...

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Abstract

The invention provides an analog measurement method and a device of oil saturation in strata, which belong to a geophysical exploration testing method and an analog device. The analog measurement method of the oil saturation in the strata comprises the steps of simulating an actual stratum (manufacturing an artificial cemented rock core model), arranging an analog well, arranging an oil-water saturation monitoring system in the artificial cemented rock core model, constructing an electric field at the periphery of the wall of the well, obtaining the oil saturation illustrative charts of different pervious courses by measuring the change of the resistivity of the rock core model and the like. The method not only can well simulate and measure the underground geological condition but also can further learn the position of the residual oil of a reservoir and the change rule of the saturation, thereby learning and determining the oil accumulation reserves and the grade in the simulated stratum.

Description

technical field [0001] The invention relates to a geophysical exploration test method, in particular to a method and device for simulating oil saturation in formation (rock), and relates to a method and device for simulating oil saturation based on oil-water front in geophysical exploration. Background technique [0002] In seismic exploration and exploitation, since a large amount of residual oil exists or remains underground, further exploration and development are required, so exploration and development researchers use various means to exploit. Before mining, the reserves and grades of underground oil reservoirs must be evaluated to further evaluate the cost and profit of mining. The accurate determination of the grade of underground oil reservoirs is a world-class problem. Now the commonly used method is to measure the oil and water content of each point in the underground rock, that is, the measurement of oil saturation. At present, the main methods of saturation meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/22G01V3/40
CPCY02A90/30
Inventor 李宜强赵庆辉侯吉瑞隋新光张冬玲任刚
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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