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Geological logging explanation evaluating method

An evaluation method, geological logging technology, applied in the direction of seismic signal processing, etc., can solve the problems of improving the production effect of oil wells, affecting the development of oilfields, and unable to quantitatively interpret and evaluate the lithology and oil and gas characteristics of oil and gas reservoirs, so as to improve the timeliness Sexual and Decisional Effects

Inactive Publication Date: 2008-05-21
LIAOHE GASOLINEEUM EXPLORATION BUREAU
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Problems solved by technology

At present, the geological logging interpretation and evaluation methods used in the field can only make qualitative conclusions, and cannot make accurate quantitative interpretation and evaluation of the lithology and oil and gas characteristics of oil and gas reservoirs, thus affecting oilfield development and oil well production effects improvement

Method used

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Experimental program
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Embodiment Construction

[0018] Be explained below in conjunction with accompanying drawing:

[0019] Collect 20 parameters in 6 categories according to the aforementioned implementation steps and technical points, and list them in the table. According to the scoring standards given in Figure 2, Figure 3, and Figure 4, the specific examples are scored one by one, and finally a comprehensive explanation is given based on the scores. Evaluation conclusion. Embodiment: 16 parameters are collected in the 2712~2720m well section of a certain well, and the sum of each parameter scoring value is 115 points, and the highest sub-quality sum of these 16 indicators is 160 points, and its ratio is calculated as 115: 160=71%, it is interpreted as an oil layer, and the oil production was 12.8 tons during the oil test, which shows that the interpretation and evaluation conclusion is accurate and reliable.

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Abstract

The invention relates to a geological logging interpretation and evaluation method for oil drilling exploration. The method is based on wellbore information and collects drilling time, oil and gas characteristics of rock samples, fluorescence characteristics, gas measurement parameters, mud tank surface conditions, storage 20 parameters of 6 categories of layer electrical measurement parameters are stored in the corresponding table, and then the scoring method is used to assign specific points to each parameter item; geological analysis experts make interpretation and evaluation conclusions based on the above parameter information to guide on-site personnel to judge the underground The properties of the reservoir fluid can achieve the goal of protecting oil and gas layers and safe drilling, and provide accurate and reliable geological parameters in time to provide a basis for the next step of work measures or construction plan formulation. The geological interpretation and evaluation method provided by the present invention analyzes and defines the parameters reflecting reservoir characteristics and fluid properties, so that qualitative data can be transformed into quantitative or semi-quantitative interpretation, and from a single evaluation to a comprehensive analysis and evaluation of multiple parameters, which can make Reservoir interpretation and evaluation results or conclusions are more scientific and rational.

Description

Technical field: [0001] The invention relates to a method for geological analysis and oil and gas layer interpretation and evaluation of petroleum drilling exploration engineering. Background technique: [0002] With the development of oilfield exploration and development technology, mud logging technology has also made new improvements and developments. However, the promotion and application of various new technologies must be based on conventional geological mud logging. Only by observing physical data such as cuttings and cores In order to better understand and master the lithological characteristics and oil and gas characteristics of underground oil and gas reservoirs. At present, the geological logging interpretation and evaluation methods used in the field can only make qualitative conclusions, and cannot make accurate quantitative interpretation and evaluation of the lithology and oil and gas characteristics of oil and gas reservoirs, thus affecting oilfield developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 朱逢松倪有利骆福贵陈光权王春辉付小军董乃秋
Owner LIAOHE GASOLINEEUM EXPLORATION BUREAU
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