CN108194077A - Gas logging total hydrocarbon correction method - Google Patents
Gas logging total hydrocarbon correction method Download PDFInfo
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- CN108194077A CN108194077A CN201711347777.5A CN201711347777A CN108194077A CN 108194077 A CN108194077 A CN 108194077A CN 201711347777 A CN201711347777 A CN 201711347777A CN 108194077 A CN108194077 A CN 108194077A
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- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 92
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 92
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 92
- 238000012937 correction Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title abstract description 12
- 238000005553 drilling Methods 0.000 claims abstract description 34
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 238000010219 correlation analysis Methods 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 11
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 9
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000009795 derivation Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 108
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003345 natural gas Substances 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract 2
- 238000011161 development Methods 0.000 abstract 1
- 239000003209 petroleum derivative Substances 0.000 abstract 1
- 230000004043 responsiveness Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/087—Well testing, e.g. testing for reservoir productivity or formation parameters
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/003—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by analysing drilling variables or conditions
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a gas logging total hydrocarbon correction method, and belongs to the technical field of petroleum and natural gas exploration and development. The method comprises the following steps: a. carrying out correlation analysis on the gas logging display total hydrocarbon value of the regional oil testing section and corresponding test data, and establishing a correlation formula of the gas logging display total hydrocarbon value and the corresponding test data; b. on the basis of the related formula, a gas logging total hydrocarbon correction model is deduced by combining the bit size, the drilling fluid discharge capacity, the influence mode on the gas logging total hydrocarbon during drilling and a gas logging total hydrocarbon correction target; c. and substituting the area data into the gas logging total hydrocarbon correction model to obtain a correction value, and performing correlation analysis on the correction value, the corresponding drill bit size, the drilling fluid discharge capacity and the drilling time to obtain a gas logging correction formula. According to the correction method, the gas measurement total hydrocarbon can be corrected, and the responsiveness of the gas measurement total hydrocarbon to the gas content of the stratum is improved.
Description
Technical field
The present invention relates to a kind of total hydrocarbon in gas logging bearing calibrations.Belong to petroleum natural gas exploration technical field.
Background technology
Total hydrocarbon in gas logging is the important parameter of logging explanation, it is that well logging scene judges that reservoir properties, formation fluid property become
One of important parameter of change.But since total hydrocarbon in gas logging is influenced by engineering parameter serious, total hydrocarbon in gas logging is often resulted in reservoir
There is deviation in the response of physical property and formation fluid property.And current total hydrocarbon in gas logging bearing calibration mainly empirically formula,
Updating formula coefficient is chosen by statistical analysis or experiment to establish calibration model, if author is Zhao Quanguo, Lu Baoju, Qiu third
Quiet, Zhao Xiaoying, high of heap of stone etc. print it is entitled《Well logging engineering》Having delivered one, entitled " total hydrocarbon in gas logging area normalization correction method exists
The application of Soviet Union's Sulige gas field " periodical literature, date issued are the 3rd phase in 2017.Its main contents is：Gas detection logging is probing
Oil-gas Layer is found and the important means of evaluation in the process, but by reservoir Gas-bearing Characteristics, drilling parameter, drilling liquid parameter, de-
The influence of many factors such as gas and efficiency of transmission, instrument performance, total hydrocarbon detected value is widely different, in oil-gas Layer standardized interpretation
Middle function is limited.With reference to 25 block geologic features of Sulige gas field Soviet Union of Soviet Union, by influencing many of gas detection logging in drilling process
The analysis and screening of factor with the method for preferred reference lamina, complete the 25 block whole districts of Sulige gas field Soviet Union of Soviet Union drill straight Cong Jing
The standardization correction of total hydrocarbon in gas logging, is highlighted the correction carried out using 2 sections of mountain coal seam as index bed to complete and total hydrocarbon in gas logging, utilized
Total hydrocarbon in gas logging after correction carries out gas-bearing property comprehensive interpretation and evaluation, preliminary to realize criteria for interpretation quantification, in Soviet Union's Sulige gas field gas
The effect limited is obtained in layer evaluation of classification, Old Well Reexamination.This method is easy to operate, highly practical, in pushing away for Soviet Union's Sulige gas field
Wide application has given full play to important function of the gas detection logging in regional exploration exploitation is taped the latent power.
But this method is fixed by correction mode, updating formula coefficient chooses the factors such as difficulty is influenced, and application effect is not
Stablize, be primarily present problems with：
1st, existing gas surveys bearing calibration and is in sxemiquantitative calculation stages, i.e., according to the acquisition principle of total hydrocarbon in gas logging, artificially establishes gas
Effect Mode of the affecting parameters for total hydrocarbon in gas logging is surveyed, human factor is excessive and inaccurate.
2nd, the weighted value of each gas survey affecting parameters is identical in existing gas survey bearing calibration, can not accurate description difference gas survey shadow
The difference of parameter is rung, is limited so as to cause model accuracy.
3rd, existing gas surveys bearing calibration when handling drilling fluid displacement, boring when influence of the engineering parameters to total hydrocarbon in gas logging,
Substantially use linear model, and well logging practice have shown that, which should be a kind of more complicated functional relation, thus existing method with
It is not inconsistent actually.
Invention content
The present invention is directed to it is existing for the above-mentioned prior art the defects of and deficiency, a kind of total hydrocarbon in gas logging correction side is provided
Method can be corrected total hydrocarbon in gas logging according to this bearing calibration, promote response of the total hydrocarbon in gas logging for formation gas bearing.
The present invention is realized by using following technical proposals：
A kind of total hydrocarbon in gas logging bearing calibration, it is characterised in that step is as follows：
A, the gas of region formation testing section is surveyed and shows that total hydrocarbon value carries out correlation analysis with corresponding test data, establish the phase of the two
Close formula；
B, based on the correlation formula, to the Effect Mode of total hydrocarbon in gas logging when with reference to bit size, drilling fluid displacement and boring
And total hydrocarbon in gas logging correction target, derive total hydrocarbon in gas logging calibration model；
C, area data is substituted into the corrected value obtained in total hydrocarbon in gas logging calibration model and corresponding bit size, drilling fluid displacement
Correlation analysis is carried out with when boring, gas is obtained and surveys updating formula.
In the step a, the gas of region formation testing section, which is surveyed, shows that total hydrocarbon value is with the correlation formula of corresponding test data：It will
The gas of region formation testing section, which is surveyed, shows that total hydrocarbon value carries out correlation analysis with corresponding test data, obtains the two correlativity, but
Since the impacted factor of total hydrocarbon in gas logging is more, complexity is influenced, correlation is often poor.
Formula 0
In formula：-- test yield, %；
TG --- total hydrocarbon in gas logging, %.
In the step b, bit size, drilling fluid displacement and bore when be to the Effect Mode of total hydrocarbon in gas logging：According to well logging
Practice, bit size, drilling fluid displacement and bore when the Effect Mode of total hydrocarbon in gas logging is determined substantially, but specifically functional relation not
It is had differences under same area, different drilling conditions.
Formula 1
In formula：-- total hydrocarbon in gas logging calibration model；
--- engineering parameter influence function.
In the step b, total hydrocarbon in gas logging correction target is：The target that gas surveys correction is to exclude the influence of engineering parameter, is made
Total hydrocarbon in gas logging can preferably reflect formation gas bearing（Test yield）.
Formula 2
In formula：-- total hydrocarbon in gas logging calibration model；
TG’--- correction total hydrocarbon, %.
In the step b, derive that total hydrocarbon in gas logging calibration model is：It can be obtained according to the derivation of formula 2
Formula 3
In formula：-- gas surveys inverse function of the display data with the correlation formula of corresponding test data.
In the step c, obtaining gas survey updating formula by correlation analysis is：With calculatingFor dependent variable, bore
It is independent variable when area of bed, drilling fluid displacement and brill, with bit size>Drilling fluid displacement>Primary-slave relation during brill, passes through step by step
Ternary higher order functionality pattern carries out inverting, and the function of wherein high coincidence rate is taken to survey calibration model as gas：
Formula 4
Formula 5.
Compared with prior art, what the present invention was reached has the beneficial effect that：
1st, the present invention is the total hydrocarbon in gas logging bearing calibration established using individual well test yield as target, by correction, improves gas survey
Total hydrocarbon provides material base for the response accuracy of formation gas bearing for region reservoir and being identified with brill for fluid.The present invention
Based on total hydrocarbon in gas logging and the correlativity of individual well test yield, influence mould of the affecting parameters to total hydrocarbon in gas logging is surveyed with reference to gas
Formula, for the calibration model of total hydrocarbon in gas logging when instead releasing bit size, drilling fluid displacement and boring.These engineerings ginseng is eliminated with this
Several influences to total hydrocarbon in gas logging enable total hydrocarbon in gas logging more effectively to reflect formation physical property and characteristic of fluid.
2nd, the present invention is to show total hydrocarbon value and corresponding work with gentle survey of the test data of the section of drilling well formation testing in region
It is established based on journey parameter by inversion algorithm, strong applicability.
3rd, existing gas is surveyed in bearing calibration, and what correction when for bit size, drilling fluid displacement and boring used is line
Sexual norm.And in the present invention, the calibration model of each engineering parameter is gone out by reverse simulationF 1(bit size),F 2(drilling fluid is arranged
Amount),F 3(during brill) more can really reflect influence of these engineering parameters for total hydrocarbon in gas logging.
4th, the present invention need not buy dedicated laboratory apparatus, directly can be in real time to total hydrocarbon in gas logging using conventional logging data
It is corrected processing.
Description of the drawings
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein：
Fig. 1 is drilling fluid displacement calibration model figure of the present invention in GM areas.
Specific embodiment
As the preferred forms of the present invention, it discloses a kind of total hydrocarbon in gas logging bearing calibration, step is：
A, the gas of region formation testing section is surveyed and shows that total hydrocarbon value carries out correlation analysis with corresponding test data, establish the phase of the two
Close formula.
B, based on the correlation formula of said two devices, to total hydrocarbon in gas logging when with reference to bit size, drilling fluid displacement and boring
Effect Mode and total hydrocarbon in gas logging correction target, derive total hydrocarbon in gas logging calibration model；
C, area data is substituted into the corrected value obtained in total hydrocarbon in gas logging calibration model and corresponding bit size, drilling fluid displacement
Correlation analysis is carried out with when boring, gas is obtained and surveys updating formula.
In the step a, the gas of region formation testing section, which is surveyed, shows that total hydrocarbon value is with the correlation formula of corresponding test data：It will
The gas of region formation testing section, which is surveyed, shows that total hydrocarbon value carries out correlation analysis with corresponding test data, obtains the two correlativity, but
Since the impacted factor of total hydrocarbon in gas logging is more, complexity is influenced, correlation is often poor.
Formula 0
In formula：-- test yield, %；
TG --- total hydrocarbon in gas logging, %.
In the step b, drill bit size, drilling fluid displacement and bore when be to the Effect Mode of total hydrocarbon in gas logging：According to well logging
Practice, drill bit size, drilling fluid displacement and bore when the Effect Mode of total hydrocarbon in gas logging is determined substantially, but specifically functional relation not
It is had differences under same area, different drilling conditions.
Formula 1
In formula：-- total hydrocarbon in gas logging calibration model；
--- engineering parameter influence function.
In the step b, total hydrocarbon in gas logging correction target is：The target that gas surveys correction is to exclude the influence of engineering parameter, is made
Total hydrocarbon in gas logging can preferably reflect formation gas bearing（Test yield）.
Formula 2
In formula：-- total hydrocarbon in gas logging calibration model；
TG’--- correction total hydrocarbon, %.
In the step b, derive that total hydrocarbon in gas logging calibration model is：It can be obtained according to the derivation of formula 2
Formula 3
In formula：-- gas surveys inverse function of the display data with the correlation formula of corresponding test data；
In the step c, obtained corrected value and corresponding drill bit size, drilling fluid displacement and while boring, carry out correlation analysis,
Obtaining gas survey calibration model is：Area data convolution 3 is calculated, willWith drill bit size, drilling fluid displacement and
Correlation analysis is carried out during brill, gas is obtained and surveys calibration model.
Formula 4
Formula 5
In the step c, obtaining gas survey updating formula by correlation analysis is：With calculatingFor dependent variable, drill bit is big
It is independent variable when small, drilling fluid displacement and brill, with drill bit size>Drilling fluid displacement>Primary-slave relation during brill, passes through ternary step by step
Higher order functionality pattern carries out inverting, and the function of wherein high coincidence rate is taken to survey calibration model as gas.
The first step：Formula 6
It asks for。
Second step：Formula 7
It asks for。
Third walks：Formula 8
It asks for。
Claims (6)
1. a kind of total hydrocarbon in gas logging bearing calibration, it is characterised in that step is as follows：
A, the gas of region formation testing section is surveyed and shows that total hydrocarbon value carries out correlation analysis with corresponding test data, establish the phase of the two
Close formula；
B, based on the correlation formula, to the Effect Mode of total hydrocarbon in gas logging when with reference to bit size, drilling fluid displacement and boring
And total hydrocarbon in gas logging correction target, derive total hydrocarbon in gas logging calibration model；
C, area data is substituted into the corrected value obtained in total hydrocarbon in gas logging calibration model and corresponding bit size, drilling fluid displacement
Correlation analysis is carried out with when boring, gas is obtained and surveys updating formula.
2. a kind of total hydrocarbon in gas logging bearing calibration according to claim 1, it is characterised in that：In the step a, region formation testing
The gas of section, which is surveyed, shows that total hydrocarbon value is with the correlation formula of corresponding test data：
Formula 0
In formula：-- test yield, %；
TG --- total hydrocarbon in gas logging, %.
3. a kind of total hydrocarbon in gas logging bearing calibration according to claim 1, it is characterised in that：In the step b, drill bit ruler
It is to the Effect Mode of total hydrocarbon in gas logging when very little, drilling fluid displacement and brill：
Formula 1
In formula：-- total hydrocarbon in gas logging calibration model；
--- engineering parameter influence function.
4. a kind of total hydrocarbon in gas logging bearing calibration according to claim 3, it is characterised in that：In the step b, total hydrocarbon in gas logging
Correcting target is：
Formula 2
In formula：-- total hydrocarbon in gas logging calibration model；
TG’--- correction total hydrocarbon, %.
5. a kind of total hydrocarbon in gas logging bearing calibration according to claim 4, it is characterised in that：In the step b, outlet is derived
Surveying total hydrocarbon calibration model is：It can be obtained according to the derivation of formula 2
Formula 3
In formula：-- gas surveys inverse function of the display data with the correlation formula of corresponding test data.
6. a kind of total hydrocarbon in gas logging bearing calibration according to claim 5, it is characterised in that：In the step c, pass through correlation
Property analyze to obtain gas and survey updating formula：With calculatingFor dependent variable, bit size, drilling fluid displacement and while boring are from becoming
Amount, with bit size>Drilling fluid displacement>Primary-slave relation during brill carries out inverting by ternary higher order functionality pattern step by step, takes it
The function of middle high coincidence rate surveys calibration model as gas：
Formula 4
Formula 5.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653739A (en) * | 2018-12-12 | 2019-04-19 | 中法渤海地质服务有限公司 | It is a kind of for correcting the compound logging curve processing method of gas detection logging influence factor |
| CN110593855A (en) * | 2019-10-14 | 2019-12-20 | 中石化石油工程技术服务有限公司 | Well logging resistivity correction method and oil layer identification method |
| CN112727440A (en) * | 2021-01-11 | 2021-04-30 | 西南石油大学 | Reservoir identification method of fracture-cavity oil and gas reservoir based on drilling time data |
| CN113159978A (en) * | 2021-05-07 | 2021-07-23 | 中国石油天然气集团有限公司 | Automatic analysis method for logging gas logging data |
| CN113704950A (en) * | 2020-05-21 | 2021-11-26 | 中国石油化工股份有限公司 | Method and device for standardized evaluation of reservoir gas content through gas measurement of all hydrocarbons |
| CN114060015A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Method and device for evaluating gas content of tight sandstone |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653739A (en) * | 2018-12-12 | 2019-04-19 | 中法渤海地质服务有限公司 | It is a kind of for correcting the compound logging curve processing method of gas detection logging influence factor |
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| CN110593855B (en) * | 2019-10-14 | 2023-02-17 | 中石化石油工程技术服务有限公司 | Well logging resistivity correction method and oil layer identification method |
| CN113704950A (en) * | 2020-05-21 | 2021-11-26 | 中国石油化工股份有限公司 | Method and device for standardized evaluation of reservoir gas content through gas measurement of all hydrocarbons |
| CN113704950B (en) * | 2020-05-21 | 2022-08-19 | 中国石油化工股份有限公司 | Method and device for standardized evaluation of reservoir gas content through gas logging of all-hydrocarbon |
| CN114060015A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Method and device for evaluating gas content of tight sandstone |
| CN114060015B (en) * | 2020-07-31 | 2024-05-03 | 中国石油化工股份有限公司 | Method and device for evaluating gas content of compact sandstone |
| CN112727440A (en) * | 2021-01-11 | 2021-04-30 | 西南石油大学 | Reservoir identification method of fracture-cavity oil and gas reservoir based on drilling time data |
| CN113159978A (en) * | 2021-05-07 | 2021-07-23 | 中国石油天然气集团有限公司 | Automatic analysis method for logging gas logging data |
| CN113159978B (en) * | 2021-05-07 | 2024-06-07 | 中国石油天然气集团有限公司 | Automatic analysis method for logging gas logging data |
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