CN1676875A - Oil field geologic logging method - Google Patents
Oil field geologic logging method Download PDFInfo
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- CN1676875A CN1676875A CN 200510043324 CN200510043324A CN1676875A CN 1676875 A CN1676875 A CN 1676875A CN 200510043324 CN200510043324 CN 200510043324 CN 200510043324 A CN200510043324 A CN 200510043324A CN 1676875 A CN1676875 A CN 1676875A
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- drilling fluid
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The invention relates to a oil well logging technique on oil exploration and well boring. Main steps are as follows: 1, preserve well boring liquor as background sample before the liquor is poured into well, take boring liquor back from the well as boring liquor sample before shattering screening, put both samples into test tube filled with normal ethane and dipping in for 10 to 20 minutes sealing, take out the clarity liquor; 2, analyze and match both samples, work out and take out the background value; 3, with the alteration in sample fluorescence spectrum, assort and ensure the oil display pattern; 4, with the change of sample equivalent oil content, ensure the oil display pattern; 5, continuously analyze the well boring liquor samples with step 1 to step 4, draw fluorescence well logging figure. The invention is of easy sampling and operating while other well logging techs are hard to obtain a exact oil identification due to lack of rock fragments.
Description
One, technical field
The present invention relates to the well logging technology in a kind of oil exploration drilling.
Two, background technology
At present, geologic assessment in the oil exploration drilling uses the fluoroscent logging of detritus method mostly, as disclosed CN1172257A Chinese invention patent in 1998 application " a kind of fluoroscent logging of detritus method ", do not have the sudden hexane that acts on a kind of fluorescence and replace halogen-containing reagent such as carbon tetrachloride crude oil, the fluorescence excitation optical source wavelength is 280nm, select for use and can adopt the quantitative analysis of fluorescence spectrum analyzer device simultaneously by the grating of 300 ~ 500nm wavelength.
Along with the application of boring method, new technology, landwaste is in small, broken bits, and thin sometimes molten mixing in drilling fluid drifted about as flour, and difficult collection is fished for; Sometimes to return output less for landwaste, mixing to fall piece, is difficult for distinguishing truth from false; Sometimes landwaste be detained the shaft bottom or even can't fish for true landwaste, more than all be that in time the discovery oil has increased difficulty.Though can remedy the deficiency of the easy test leakage of above unfavorable factor oil in probing The field gas detection logging, compound logging technology, but shortage accurate quantification, particularly for the well that only depends on conventional well logging technological service, utilizing with the landwaste is that media identification is implemented oil and just seemed very difficult.
Three, summary of the invention
To the objective of the invention is, landwaste in small, broken bits owing to landwaste in order overcoming and to return that output is less, landwaste is detained reasons such as shaft bottom, utilizing existing well logging technology is that the very difficult deficiency of oil is implemented in media identification with the landwaste, and a kind of oil field geologic logging method is provided.
Key step of the present invention is as follows:
(1) before going into well, gets drilling fluid drilling fluid as drilling fluid background sample, before reciprocating sieve, get return out well head drilling fluid as the drilling fluid sample, drilling fluid sample and drilling fluid background sample put into n-hexane reagent is housed in vitro, sealing was soaked 10 ~ 20 minutes, get its transparency liquid then, analyze the concrete operations step and the operational procedure of chip sample with reference to the quantitative fluorescence analysis instrument and analyze; (2) drilling fluid background sample and drilling fluid sample are analyzed contrast, observe spectrogram form and suitable oil content and change, carry out analysis-by-synthesis, determine and the background correction value; (3) utilize the metamorphosis of fluorescent spectrogram, and compare, distinguish and implement the oil rule with this area standard spectrogram; (4) utilize the variation of the suitable oil content of sample, and compare, implement the oil rule with this area standard oil sample spectrogram; (5) according to step (1) ~ (4) the drilling fluid sample that extracts is analyzed continuously, every bit is analyzed the suitable oil content numerical value line of gained, draw out drilling fluid rationing fluorescent logging figure, utilize drilling fluid rationing fluorescent logging figure variation trend to judge oil-gas Layer.
The present invention is sample with the drilling fluid, its entrained formation fluid is detected, directly analyze the oil content in the drilling fluid, thereby obtain the oil-containing information on corresponding stratum, this method sampling is convenient, operating process is simple, has remedied because of the landwaste disappearance adopts other logging method to be difficult to carry out the deficiency of accurate oil-gas recognition.
Four, description of drawings does not have
Five, the specific embodiment
Specific implementation process of the present invention is as follows: (1) gets drilling fluid as drilling fluid background sample before drilling fluid is gone into well, before reciprocating sieve, get return out well head drilling fluid as the drilling fluid sample, with each 1 milliliter in drilling fluid sample and drilling well background sample, put into respectively and 5 n-hexane milliliter reagent are housed in vitro, the sealing of carrying out 10 ~ 20 minutes is soaked, get its transparency liquid then, analyze the concrete operations step and the operational procedure of chip sample with reference to the quantitative fluorescence analysis instrument and analyze;
(2) drilling fluid background sample and drilling fluid sample are analyzed contrast, observe spectrogram form and suitable oil content and change, carry out analysis-by-synthesis, determine and the background correction value;
(3) utilize the metamorphosis of fluorescent spectrogram, compare, distinguish and implement the oil rule with this area standard spectrogram;
(4) utilize the variation of the suitable oil content of sample, and compare, implement the oil rule with this area standard oil sample spectrogram;
(5) according to step (1) ~ (4) the drilling fluid sample that extracts is analyzed, every bit is analyzed the suitable oil content numerical value line of gained, draw out drilling fluid rationing fluorescent logging figure, utilize drilling fluid rationing fluorescent logging figure variation trend to judge oil-gas Layer.
In above step, the reagent that soaks drilling fluid sample and drilling fluid background sample is n-hexane reagent; Drilling fluid sample and drilling fluid background sample in vitro soak time were the best with 15 minutes; The drilling fluid sample is by landwaste admission spacing requirement in the geological design, takes a sample before reciprocating sieve when the liquid of the late degree of depth arrives well head, after the sampling sample is sealed.
The present invention proves that also by comparing with the fluoroscent logging of detritus method drilling fluid rationing fluorescent logging method of the present invention and fluoroscent logging of detritus method match substantially to the oil analysis result.Test is by the well section to 3990.66 meters of 3 mouthfuls of wells totals, take 34 in drilling fluid background sample, 1307 in drilling fluid sample, 1356 of chip samples, adopt drilling fluid and landwaste quantitative fluorescence analysis technology to carry out well logging analysis (landwaste quantitative fluorescence analysis technology is conventional well logging analytical technology) simultaneously, result of the test shows that on-the-spot oil gas finds that coincidence rate reaches 100%.
Claims (1)
1, a kind of oil field geologic logging method, it is characterized in that: (1) gets drilling fluid as drilling fluid background sample before drilling fluid is gone into well, before reciprocating sieve, get return out well head drilling fluid as the drilling fluid sample, drilling fluid sample and drilling fluid background sample put into n-hexane reagent is housed in vitro, sealing was soaked 10 ~ 20 minutes, get its transparency liquid then, analyze with reference to the operational procedure of quantitative fluorescence analysis instrument; (2) drilling fluid background sample and drilling fluid sample are analyzed contrast, observe spectrogram form and suitable oil content and change, carry out analysis-by-synthesis, determine and the background correction value; (3) utilize the metamorphosis of fluorescent spectrogram, and compare, distinguish and implement the oil rule with this area standard spectrogram; (4) utilize the variation of the suitable oil content of sample, and compare, implement the oil rule with this area standard oil sample spectrogram; (5) according to step (1) ~ (4) the drilling fluid sample that extracts is analyzed continuously, every bit is analyzed the suitable oil content numerical value line of gained, draw out drilling fluid rationing fluorescent logging figure, utilize drilling fluid rationing fluorescent logging figure variation trend to judge oil-gas Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510043324 CN1676875A (en) | 2005-04-14 | 2005-04-14 | Oil field geologic logging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510043324 CN1676875A (en) | 2005-04-14 | 2005-04-14 | Oil field geologic logging method |
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| Publication Number | Publication Date |
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| CN1676875A true CN1676875A (en) | 2005-10-05 |
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| CN 200510043324 Pending CN1676875A (en) | 2005-04-14 | 2005-04-14 | Oil field geologic logging method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150490A (en) * | 2015-03-23 | 2016-11-23 | 韩文峰 | Drilling well is monitored in real time with automatically dragging for sand and measuring Spectrometer |
| CN110208234A (en) * | 2019-06-13 | 2019-09-06 | 中国石油集团渤海钻探工程有限公司 | Quantitative fluorescence instrument scaling method |
-
2005
- 2005-04-14 CN CN 200510043324 patent/CN1676875A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150490A (en) * | 2015-03-23 | 2016-11-23 | 韩文峰 | Drilling well is monitored in real time with automatically dragging for sand and measuring Spectrometer |
| CN110208234A (en) * | 2019-06-13 | 2019-09-06 | 中国石油集团渤海钻探工程有限公司 | Quantitative fluorescence instrument scaling method |
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