Interpretation Method of Mud Logging Reservoir Using Multiple Parameters to Calculate Composite Water Cut of Reservoir

A technology of water cut and multi-parameters, which is applied in calculation, earthwork drilling and production, and data processing applications, etc., can solve the problem that the universality and accuracy of interpretation charts cannot meet the requirements of interpretation and evaluation of complex oil and gas layers, and quantitative interpretation and evaluation of reservoirs have not been realized. problems such as layer moisture content, to achieve the effect of improving the interpretation coincidence rate and improving the interpretation accuracy

Active Publication Date: 2022-06-07
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology

[0004] In the mud logging industry, many attempts have been made to combine gas logging and geochemical logging parameters for comprehensive interpretation. There are many established charts for oil, gas and water interpretation and evaluation. Combination, the universality and accuracy of the interpretation chart cannot meet the interpretation and evaluation needs of complex oil and gas layers, and quantitative interpretation and evaluation of the water content of the reservoir has not been realized

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  • Interpretation Method of Mud Logging Reservoir Using Multiple Parameters to Calculate Composite Water Cut of Reservoir
  • Interpretation Method of Mud Logging Reservoir Using Multiple Parameters to Calculate Composite Water Cut of Reservoir
  • Interpretation Method of Mud Logging Reservoir Using Multiple Parameters to Calculate Composite Water Cut of Reservoir

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[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0042] like figure 1 As shown, the concrete realization method of the present invention is as follows:

[0043] 1. Data collection:

[0044] Gas measurement data: The gas measurement data collection requires a quantitative degasser to analyze the gas in the drilling fluid. In order to ensure the reliability of the data compared between the interpreted reservoir and the standard water layer, the gas detection equipment requires a measurement accuracy of 0.0001%.

[0045] Geochemical data: The samples analyzed by geochemical logging technology are mainly wall cores or cores. The samples should be selected quantitatively. Generally, the sample weight is 100 mg ± 5 mg. The S0, S1 an...

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Abstract

The invention discloses a mud logging oil and gas layer interpretation method using multi-parameters to calculate the comprehensive water content of the reservoir, using geological, gas logging and geochemical data obtained from field logging to perform data quality analysis, combined with regional characteristics, and quantify the influencing factors , considering the interpretation weight coefficient of a single technology in the work area, the gaseous and liquid hydrocarbon abundance indices under different oil quality conditions, the total hydrocarbon value and Pg value of typical water layers in the same layer or the same oil-water system, etc., the reservoir Composite moisture calculation. The comprehensive water content of the reservoir is calculated as a quantitative parameter, which can be used to analyze the water content of the reservoir, so as to quantitatively evaluate the oil and gas content of the reservoir. This method highlights the contrast relationship between the water layer and the reservoir, and can quantitatively evaluate the comprehensive oil and gas content of the reservoir. In the process of use, the coincidence rate of mud logging interpretation is improved, and the applicability is strong, which can be popularized and used as a new method of mud logging oil and gas layer interpretation.

Description

technical field [0001] The invention belongs to the field of well logging in the wellbore technology of the petroleum industry exploration industry and is suitable for comprehensive interpretation and evaluation of well logging, in particular to a well logging oil and gas layer interpretation method for calculating the comprehensive water content of a reservoir by using multiple parameters. It is used for the interpretation and evaluation of well logging oil and gas reservoirs, using on-site geology, gas logging and logging geochemical logging data, combined with regional characteristics, quantifying influencing factors, and establishing an evaluation formula between reservoirs and standard water layers. Quantitative interpretation and evaluation of oil and gas identification. Background technique [0002] Gas logging logging and geochemical logging technology are important technical means for logging technology to judge oil quality and interpretation of oil and gas layers. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/02G06Q10/06E21B49/00
CPCG06Q50/02G06Q10/0639E21B49/00
Inventor 谭忠健毛敏袁胜斌胡云吴立伟倪朋勃郭明宇李鸿儒马金鑫吴昊晟刘坤张建斌杨毅
Owner CHINA NAT OFFSHORE OIL CORP
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