Resistivity data collecting and processing method based on oil-water front

A technology of data acquisition, processing and resistivity, applied in the field of geophysical exploration and testing, can solve the problems of lack of physical simulation, low accuracy, and inability to accurately determine the underground physical conditions, so as to improve oil displacement efficiency and improve comprehensive Benefit, the effect of expanding the impact volume

Inactive Publication Date: 2010-07-07
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0005] However, the above method lacks physical simulation and cannot accurately

Method used

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  • Resistivity data collecting and processing method based on oil-water front
  • Resistivity data collecting and processing method based on oil-water front
  • Resistivity data collecting and processing method based on oil-water front

Examples

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Effect test

Embodiment 1

[0172] Aiming at the main oil layer in the middle block of Xinger District of Daqing Oilfield, the oil displacement mechanism research of different chemical displacement agents (polymer, binary and ternary) was carried out, and the process of polymer, binary and ternary displacement was given. , the front migration law, oil-water saturation distribution and sweep coefficient in different layers of heterogeneous oil layers, quantified the contribution of expanding swept volume and improving oil displacement efficiency to the recovery of different permeable layers at each stage of displacement . In the plan to further tap the remaining oil, fully consider the heterogeneity of the oil layer and the specific requirements of different permeable layers for the EOR method, and adopt the development method of pre-polymer slug plus ASP flooding. As of 2005, this area has achieved a good effect of increasing oil production and reducing water. The daily oil production of 9 central produc...

Embodiment 2

[0183] For the first station-wide high-concentration flooding in the early stage of polymer injection, the 1# station block of the East Block of South 1 District, carried out experimental research on the migration rules and influencing factors of polymer flooding fronts with different molecular weights and different concentrations. Through indoor physical simulation experiments, the differences in the timing of polymers with different molecular weights and different concentrations forming oil walls in the homogeneous model are given; the number of PV injected by polymers with different molecular weights and different concentrations before the high permeability layer breaks through is given, and The optimal adjustment timing is proposed; when the model works, the migration positions of the polymer fronts with different molecular weights and different concentrations are given; the difference in the migration speed of polymers with different molecular weights and different concentr...

Embodiment 3

[0186] Aiming at the Pu I1-4 oil layer in the area east of the No. 140 fault in the South Second Area, polymer flooding experiments were carried out, and the oil-water front migration law of polymer flooding in different permeability layers of heterogeneous oil layers was given; the interlayer channeling flow law ; Breakthrough timing of oil-water front on main line and diversion line at different positions; distribution of remaining oil on main line and diversion line of different permeable layers. The research results provide technical support for the development and adjustment of the polymer flooding process and the subsequent work of tapping the remaining oil potential.

[0187] In the Pu I1-4 oil layer east of the No. 140 fault in the second area of ​​the South, good results have been seen after polymer injection, but the existence of high-permeability layers or large pores makes the concentration of polymer seepage in oil wells increase too quickly, resulting in the accum...

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Abstract

The invention provides a resistivity data collecting and processing method based on an oil-water front, which belongs to a method for measuring the change of the resistivity of a geological stratum with a core containing oil and water in the physical simulation of geophysical exploration and development. The method comprises the steps of simulating an actual stratum (manufacturing an artificial cement rock core model), arranging a simulation well, arranging a front monitoring system and measuring the change of the resistivity in the artificial cement rock core model. 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 oil-water front.

Description

technical field [0001] The invention relates to a geophysical exploration testing method, specifically a method for collecting and processing resistivity data based on an oil-water front, and a method for measuring the resistivity change of a geological layer containing oil-water cores in a physical simulation of geophysical exploration and development Methods. Background technique [0002] In seismic exploration and exploitation, due to the existence or remaining of a large amount of remaining oil in the ground, further exploration and development are required, so exploration and development researchers use various methods to mine. It has been widely used in which the position of oil or mineral is judged by using potential difference or resistivity difference. [0003] For example, in the Chinese patent application number 01123944.1, the measurement of resistivity in rocks is disclosed, wherein probes and electrodes are set in the rocks, and under the action of an external...

Claims

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Application Information

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IPC IPC(8): E21B49/00
Inventor 李宜强侯吉瑞刘其成隋新光张冬玲任刚
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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