Drilling fluid rationing fluorescent logging method

A drilling fluid and fluorescence technology, which is applied in fluorescence/phosphorescence, wellbore/well components, and earth-moving drilling and mining, etc., can solve the problems of less cuttings returning, difficult display, etc., and achieves convenient sampling and simple operation process. , Make up for the effect of accurate oil and gas identification
CN1399127AInactive Publication Date: 2003-02-26CNPC BOHAI DRILLING ENG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CNPC BOHAI DRILLING ENG
Publication Date
2003-02-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

A drilling fluid quantitative fluorescence well logging method includes taking the drilling fluid before entering well as background sample and the drilling fluid returned from the well as logging sample, and soaking the background sample and the logging sample, and analysis by the steps similar to those in rock chip sample analysis. The varied trend of the drilling fluid quantitative fluorescence well logging diagram is used in judging hydrocarbon reservior. The said method is simple and practical, and is used for petroleum exploration.
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Description

technical field

[0001] The invention relates to a mud logging method in oil exploration drilling, in particular to a drilling fluid quantitative fluorescence mud logging method. Background technique

[0002] At present, most geological evaluations in oil exploration and drilling use cuttings fluorescence logging methods, such as the CN1172257A Chinese invention patent application "A Cuttings Fluorescence Logging Method" published in 1998, using a method that has no quenching effect on the fluorescence of crude oil Hexane replaces halogen-containing reagents such as carbon tetrachloride, and the wavelength of the excitation fluorescence light source is 280nm. The grating that can pass the wavelength of 300-500nm is selected, and the fluorescence spectrum analysis instrument is used for quantitative analysis.

[0003] With the application of new drilling technologies and techniques, cuttings are finely broken, sometimes as fine as flour, and drift in the drilling fluid, making...

Claims

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