Appraisement method for rock wettability
An evaluation method and wettability technology, which is applied in the field of evaluation and reservoir rock wettability measurement, can solve problems such as difficulty in satisfying reservoir rock wettability, complicated measurement methods, and difficult experiments, so as to achieve accurate and reliable evaluation results , strong operability and simple experimental process
Inactive Publication Date: 2008-06-11
LIAOHE GASOLINEEUM EXPLORATION BUREAU
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The measurement methods of these methods are complicated, and require the experimenters to have high experimental skills and strong professional knowledge. Some methods are more difficult to experiment, and the experiment period is longer. The Practical Need to Intuitively Evaluate the Wettability of Reservoir Rocks
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[0018] Process, experiment, measure, calculate, and draw curves on the rock samples obtained by drilling and coring according to the aforementioned experimental procedures, and qualitatively calibrate the measured rock samples by changing the slope k of the relationship curve between rock phase dispersion rate and water saturation wettability.
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The invention relates to a rock wettability evaluating method used for petroleum drilling and exploration, which utilizes the frequency dispersion character of rock electrical parameter to conduct reservoir rock wettability evaluating. The dispersion information of phase has closer relationship with the wettability comparing with the resistivity; therefore the evaluating result is more accurate and reliable. The method has the characters of being simple, visual and convenient, which doesn't need special experiment device and the experiment period is short, the maneuverability is strong, the experiment process is simple, and can be conducted under normal temperature and pressure, and which also can be conducted under stimulating the high temperature and pressure of reservoir condition.
Description
Technical field: [0001] The invention relates to a process method for measuring and evaluating the wettability of reservoir rocks during oil drilling and exploration. Background technique: [0002] In the process of oil drilling and exploration, it is necessary to evaluate and measure parameters such as reservoir rock wettability through coring. These tasks are of great significance to oil reservoir exploration and even future development. At present, among the methods for determining rock wettability in the laboratory, quantitative measurement methods include contact angle measurement, Amott method, USBM method, automatic imbibition method, NMR relaxation method, etc., and qualitative measurement methods include Cryo-SEM method , Wilhelmy dynamic plate method, microporous membrane determination method, relative permeability curve method, etc. The measurement methods of these methods are complicated, and require the experimenters to have high experimental skills and strong ...
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IPC IPC(8): G01N13/00G01N15/08
Inventor 肖占山朱世和王东曾志国马静杨乃静
Owner LIAOHE GASOLINEEUM EXPLORATION BUREAU
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