CN1170146C - Drilling fluid rationing fluorescent logging method - Google Patents
Drilling fluid rationing fluorescent logging method Download PDFInfo
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- CN1170146C CN1170146C CNB021296049A CN02129604A CN1170146C CN 1170146 C CN1170146 C CN 1170146C CN B021296049 A CNB021296049 A CN B021296049A CN 02129604 A CN02129604 A CN 02129604A CN 1170146 C CN1170146 C CN 1170146C
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Abstract
The present invention relates to a drilling solution rationing fluorescent logging method, particularly to a logging method in the drilling of petroleum exploration. The existing method has the insufficiency of difficult oil and gas display identification with rock fragments as a medium, and the insufficiency is caused by broken rock fragments, small rock fragment return quantity, rock fragment detention in the bottom of wells, etc. In order to overcome the insufficiency, a drilling solution is used as a drilling solution background sample before the drilling solution is put into a well, the drilling solution which returns to the opening of the well is used as a drilling solution sample, the drilling solution sample and the drilling solution background sample are respectively put into a test tube filled with a reagent to be soaked, then the concrete operation steps and the operation specifications of the rock fragment sample are analyzed by a quantitative fluorescence analyzer, and an oil layer and a gas layer are judged by utilizing the variation tendency of the quantitative fluorescence logging figure of the drilling solution. The present invention utilizes the drilling solution as an analysis sample to detect the stratum liquid which is carried by the analysis sample, has the advantages of convenient sampling, and simple and feasible operation processes, and makes up for the insufficiency of difficult exact oil and gas display identification caused by rock fragment deletion by other logging methods.
Description
Technical field
The present invention relates to the logging method in a kind of oil exploration drilling, particularly relate to a kind of drilling fluid rationing fluorescent logging method.
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 ", the hexane that does not have quenching effect with a kind of fluorescence to crude oil replaces halogen-containing reagent such as phenixin, the fluorescence excitation optical source wavelength is 280nm, select for use and can adopt the quantitative test of fluorescence spectrum analyzer device simultaneously by the grating of 300～500nm wavelength.
Along with the application of drilling well new technology, 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 show of oil and gas has increased difficulty.Though can remedy the deficiency of the easy test leakage of above unfavorable factor show of oil and gas in probing rig-site utilization gas detection logging, compound logging technology, but shortage accurate quantification, particularly for the well that only depends on conventional well logging technical service, utilizing with the landwaste is that media identification is implemented show of oil and gas and just seemed very difficult.
Summary of the invention
The objective of the invention is, landwaste in small, broken bits owing to landwaste and return that output is less, landwaste is detained reasons such as shaft bottom in order to overcome, utilizing existing well logging technology is that the very difficult deficiency of show of oil and gas is implemented in media identification with the landwaste, and a kind of method of utilizing the quantitative fluorescence analysis technology by drilling fluid Direct Recognition show of oil and gas is provided.
In order to achieve the above object, the key step of drilling fluid rationing fluorescent logging method 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 normal hexane reagent is housed in vitro, sealing was soaked 10～20 minutes, get its transparency liquid then, analyze the concrete operations step and the working specification 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 show of oil and gas rule with this area standard spectrogram; (4) utilize the variation of the suitable oil content of sample, and compare, implement the show of oil and gas 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 hydrocarbon zone.
The present invention is sample with the drilling fluid, its entrained resident fluid is detected, directly analyze the oleaginousness 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.
Description of drawings
Fig. 1 is a drilling fluid rationing fluorescent logging method process chart of the present invention.
Fig. 2 is port new 5-21 test pit drilling fluid, landwaste rationing fluorescent logging figure.
In Fig. 2: dotted line 1 is the suitable oil content curve of drilling fluid, and solid line 2 is a resistivity curve, and straight line 3 is the suitable oil content line of landwaste.
Embodiment
Concrete implementation step of the present invention as shown in Figure 1, its process 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 fluid background sample, put into respectively and 5 normal 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 working specification 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 show of oil and gas rule with this area standard spectrogram;
(4) utilize the variation of the suitable oil content of sample, and compare, implement the show of oil and gas 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 hydrocarbon zone.
In above step, the reagent that soaks drilling fluid sample and drilling fluid background sample is normal 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 show of oil and gas 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, test findings shows, use 2 kinds of different analytical approachs, on-the-spot oil gas finds that coincidence rate reaches 100%, tests specifically that correlation data sees Table 1, Fig. 2.
Adopt drilling fluid rationing fluorescent logging method suitable oil content situation of change of drilling fluid when boring the chance show of oil and gas to be recorded in the table 2.
Table 1: drilling fluid, landwaste quantitative fluorescence analysis technology contrast table
| Pound sign | Well section (m) | Analytic sample (point) | Integrated interpretation conclusion (m/ layer) | Oil gas discovery rate (%) | ||||||||
| Landwaste | Drilling fluid | The drilling fluid background | The drilling fluid sample | Chip sample | The drilling fluid sample | Chip sample | ||||||
| Oil reservoir | The difference oil reservoir | Oil-water common-layer | Oil reservoir | The difference oil reservoir | Oil-water common-layer | |||||||
| The new 5-21 in port | 943.00 | 375 | 474 | 9 | 56/7 | 58/9 | 18/2 | 102/12 | 38/6 | Do not have | 100 | 100 |
| Sea, the village 1 * 1 | 1687.66 | 628 | 403 | 13 | Do not explain | Do not explain | Do not have | 16.5/4 | 6/4 | Do not have | 100 | 100 |
| Shen 16 * 1 | 1360.00 | 353 | 430 | 12 | Do not have | Do not have | Do not have | Do not have | Do not have | Do not have | 100 | 100 |
| Add up to | 1356 | 1307 | 34 | 56/7 | 58/9 | 18/2 | 118.5/16 | 44/10 | Do not have | 100 | 100 | |
Table 2: bore and meet the suitable oil content change list of show of oil and gas drilling fluid
| Well depth (m) | Suitable oil content mg/l | Lithology |
| 1820 | 48.3 | The celadon mud stone |
| 1822 | 40.2 | The celadon mud stone |
| 1824 | 33.1 | The celadon mud stone |
| 1826 | 43.9 | The celadon mud stone |
| 1828 | 96.6 | Light grey fluorescence packsand |
| 1830 | 79.7 | Light grey fluorescence packsand |
| 1832 | 64.0 | Grey fluorescence contains gravel seriate sandstone |
| 1834 | 71.6 | The celadon mud stone |
| 1836 | 165.8 | Grey fluorescence contains gravel seriate sandstone |
| 1838 | 246.1 | Grey fluorescence contains gravel seriate sandstone |
| 1840 | 554.3 | Grey fluorescence contains gravel seriate sandstone |
| 1842 | 652.7 | Grey fluorescence contains gravel seriate sandstone |
| 1844 | 342.6 | Grey fluorescence contains gravel seriate sandstone |
Claims (3)
1. drilling fluid rationing fluorescent logging method is characterized in that:
(1) before going into well, gets drilling fluid drilling fluid as drilling fluid background sample, get before the reciprocating sieve return out well head drilling fluid as the drilling fluid sample, drilling fluid sample and drilling fluid background sample put into normal hexane reagent is housed in vitro, sealing was soaked 10～20 minutes, get its transparency liquid then, analyze the concrete operations step and the working specification 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 situation of 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 show of oil and gas rule with this area standard spectrogram;
(4) utilize the variation of the suitable oil content of sample, and compare, implement the show of oil and gas 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 hydrocarbon zone.
2. drilling fluid rationing fluorescent logging method according to claim 1 is characterized in that: it is 15 minutes that described drilling fluid sample and drilling fluid background sample are put into the sealing soak time in vitro that reagent is housed.
3. drilling fluid rationing fluorescent logging method according to claim 1 is characterized in that: the sampling of drilling fluid sample is by landwaste admission spacing requirement in the geological design, takes a sample after the liquid of the late degree of depth arrives well head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021296049A CN1170146C (en) | 2002-09-02 | 2002-09-02 | Drilling fluid rationing fluorescent logging method |
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| CNB021296049A CN1170146C (en) | 2002-09-02 | 2002-09-02 | Drilling fluid rationing fluorescent logging method |
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| CN1170146C true CN1170146C (en) | 2004-10-06 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397098C (en) * | 2004-08-16 | 2008-06-25 | 韩永林 | Analysing method of rock-fragment fluorescent logging |
| CN100501122C (en) * | 2007-03-30 | 2009-06-17 | 厦门大学 | Fluorescent logging method under non-toxic water system |
| CN102296949B (en) * | 2011-05-13 | 2014-06-25 | 北京师范大学 | High-temperature high-pressure dynamic drilling fluid hydrocarbon Raman spectrum detector |
| CN104076020A (en) * | 2014-07-22 | 2014-10-01 | 中国海洋石油总公司 | Method for recognizing reservoir fluid property by adopting three-dimensional quantitative fluorescent longitudinal parametric variation trend |
| CN104132918A (en) * | 2014-07-22 | 2014-11-05 | 中国海洋石油总公司 | Method for identifying true or false oil and gas show through three-dimensional quantitative fluorescence |
| CN104100262A (en) * | 2014-07-22 | 2014-10-15 | 中国海洋石油总公司 | Method for identifying properties of reservoir fluid by three-dimensional quantitative fluorescence parameter charts |
| CN113607712B (en) * | 2021-08-23 | 2023-12-19 | 天津陆海石油设备系统工程有限责任公司 | Crude oil fluorescence spectrum analysis method for removing pollution of oil-based mud |
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