Well logging quantitative interpretation method based on fast chromatographic analyzer

Abstract

The invention relates to the field of petroleum well logging, in particular to a well logging quantitative interpretation method based on a fast chromatographic analyzer, which is characterized by at least comprising the following steps of: (1) extracting samples; (2) outputting volume percentage parameters of sample de-aerated gas by the fast chromatographic analyzer; (3) submitting the data of the fast chromatographic analyzer (7) to a processing unit for processing; (4) classifying each well obtained by a sampling well drilling system according to the performance of oil contained in the stratum layer by layer; (5) storing the parameters calculated at the step (3) and the stratum contained oil classifying layers obtained at the step (4) in the same layer, finding out common options of each stratum contained oil classifying layer distributed in all sampling drilled wells and corresponding layer analyzing parameters, solving the minimum of the common options of all sampling drilled wells as threshold; (6) marking the obtained stratum contained oil classification of the sampling drilled wells in the whole drilled well region in a form of a geographic information chart; and (7) searching the working key points of the whole drilled well region with the geographic information chart. The invention realizes fast spectrum evaluation and quantization, solves the problems that the traditional interpretation has low coincidence rate and large difficulty and can not be quantitatively interpreted, and provides more reliable technical support for the interpretation and the evaluation of the reservoir property.

Description

technical field [0001] The invention belongs to the field of petroleum mud logging, in particular to a mud logging quantitative interpretation method based on a fast chromatographic analyzer. technical background [0002] In oil mud logging, it is necessary to have an overall understanding of the production area, usually by sampling the production area to obtain first-hand information. A quantitative understanding of the overall picture of the mining area can be obtained from the sampling data. Then carry out the mining of the combination of key points and secondary points. The commonly used methods for quantitative understanding are the Pixler hydrocarbon ratio method, 3H chart method and hydrocarbon component triangular diagram method, etc., which have the advantage of being convenient and quick, but because the accuracy of data collection is limited and affected to varying degrees, the interpretation of coincidence rate The level of interpretation is relatively low, and...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a quantitative interpretation method for mud logging based on a fast chromatographic analyzer, so as to realize rapid chromatographic evaluation and quantification, solve the problems of low coincidence rate, difficult explanation, and inability to quantitatively explain the existing interpretation methods, and provide a new method for reservoir property interpretation. Evaluation provides more reliable technical support

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