CN105952446B - A kind of petroleum gas gas-bearing formation component content measuring method - Google Patents
A kind of petroleum gas gas-bearing formation component content measuring method Download PDFInfo
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- CN105952446B CN105952446B CN201610262683.7A CN201610262683A CN105952446B CN 105952446 B CN105952446 B CN 105952446B CN 201610262683 A CN201610262683 A CN 201610262683A CN 105952446 B CN105952446 B CN 105952446B
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- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000003209 petroleum derivative Substances 0.000 title claims abstract description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 112
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 106
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 56
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 55
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 238000004364 calculation method Methods 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 238000004458 analytical method Methods 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 61
- 238000011161 development Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004836 empirical method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011158 quantitative evaluation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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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
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of petroleum gas gas-bearing formation component content measuring methods that can improve content computational solution precision comprising following steps: S1, the sampling of high temperature and pressure gas-bearing formation mine gas: the multi-group data that S2, acquisition are made of bulk density parameter, methane and carbon dioxide content, temperature parameter and pressure parameter；S3, parameter fitting is carried out to above-mentioned multi-group data, constructs methane and carbon dioxide content with the primary calculations model of gas volume density, temperature and pressure change；S4, pressure data is surveyed on gas-bearing formation section admission stratum, chooses different depth and measure strata pressure, calculates barometric gradient, and the bulk density value that converts；Actual measurement obtains the temperature value of gas-bearing formation section, substitutes into content computation model, obtains methane and carbon dioxide content in high temperature and pressure gas-bearing formation.
Description
Technical field
The present invention relates to during a kind of oil-gas exploration logging evaluation technology more particularly to a kind of petroleum gas gas-bearing formation
Component content measuring method.
Background technique
The quantitative assessment of methane (CH4) and carbon dioxide (CO2) content is THE WESTERN SOUTH CHINA SEA basin height in high temperature and pressure gas-bearing formation
One of the key technology of warm high-pressure natural gas layer exploration and development.
Pressure data, which is surveyed, using stratum quantitatively calculates methane (CH4) and carbon dioxide (CO2) content category in high temperature and pressure gas-bearing formation
Research methods innovation in natural gas exploration and development field, mainly surveys pressure data using stratum and gas analysis sample is tested
Data, study methane (CH4) and carbon dioxide (CO2) content to the correlativity between gas volume density, temperature and pressure,
High temperature and pressure gas-bearing formation methane (CH4) and carbon dioxide (CO2) content quantitative evaluation model finally are established, to quickly, accurately count
Methane (CH4) and carbon dioxide (CO2) content are calculated, test layer bit decisions foundation is provided for natural gas exploration and development, instructs gas field
Exploration and development.
Existing methane (CH4) and carbon dioxide (CO2) content method are mostly region empirical method, bent using neutron, density
Line constructs corresponding computation model.But neutron, density curve are influenced by factors such as lithology, borehole condition, mud immersions simultaneously,
Thus cause directly to utilize these methods calculating gas-bearing formation methane (CH4) lower containing accuracy of measurement with carbon dioxide (CO2), be counted,
Gas-bearing formation gas content and test sampling analysis result absolute error are up to 50% or more, bring to construction of natural gas fields production very big tired
It is difficult.
Summary of the invention
In view of the shortcomings of the prior art, can be improved in high temperature and pressure gas-bearing formation the technical problem to be solved in the present invention is to provide a kind of
Methane and carbon dioxide content quantify the petroleum gas gas-bearing formation component content measuring method of computational solution precision.
In order to overcome the shortage of prior art, the technical solution adopted by the present invention is that: a kind of petroleum gas gas-bearing formation ingredient contains
Quantity measuring method, for measuring the content of methane and carbon dioxide in petroleum gas, the petroleum gas gas-bearing formation ingredient contains
Quantity measuring method the following steps are included:
S1, the sampling of high temperature and pressure gas-bearing formation mine gas: multiple groups gas is chosen from high temperature and pressure gas field well site using sample apparatus
Body sample, while measuring the pressure and temperature of sample position；
S2, multiple groups test experiments data are obtained: is tested according to the actual temperature of gas sample gas-bearing formation section and design of pressure
Condition, the measurement for carrying out bulk density and methane and carbon dioxide content to gaseous sample are tested, obtain by bulk density parameter,
The multi-group data that methane and carbon dioxide content, temperature parameter and pressure parameter are constituted；
S3, building primary calculations model: using the data fitting analyzing method in mathematical statistics scope, to above-mentioned multiple groups number
According to parameter fitting is carried out, methane and carbon dioxide content are respectively obtained with the primary of gas volume density, temperature and pressure change
Computation model；
S4, high temperature and pressure gas-bearing formation section methane and carbon dioxide content are obtained: surveys and presses on high temperature and pressure gas-bearing formation section admission stratum
Data handles acquired gas-bearing formation section formation pressure data, and selection different depth measures to be laminated obtainedly
Force data calculates the straight slope of pressure relative depth as barometric gradient, and converts and obtain gas-bearing formation section gas volume density value；
It is actually detected to the temperature progress of high temperature and pressure gas-bearing formation, the temperature value of gas-bearing formation section is obtained, by gas volume density, temperature, stratum
Pressure value is updated to methane and CO2 meter is calculated in model, obtains methane in high temperature and pressure gas-bearing formation and contains with carbon dioxide
Amount.
A kind of improvement of technical solution as petroleum gas gas-bearing formation component content measuring method of the present invention, in step 3
In, the primary calculations model are as follows: X=146.5*xep (- 5.51* (den*log (T/P)/log (P))), Y=64.782*ln
(den*log(T/P)/log(P))+142.35；Wherein, X is the methane content that experimental analysis obtains, and unit %, Y are experiment point
Analyse obtained carbon dioxide content, unit %；Den is that experimental analysis obtains gas volume density value, unit g/cm3；T is
Temperature value, unit are DEG C；P is pressure value, unit MPa.
A kind of improvement of technical solution as petroleum gas gas-bearing formation component content measuring method of the present invention, in step 2
In, use the bulk density of fluid volume penetron measurement gaseous sample；First is measured by gas component spectroanalysis instrument
The content of alkane and carbon dioxide.
A kind of improvement of technical solution as petroleum gas gas-bearing formation component content measuring method of the present invention, in step 2
In, 40 ~ 50 groups of test experiments data are obtained in total.
The beneficial effects of the present invention are: the present invention is quantitatively calculating aforementioned two kinds of gas contents using stratum survey pressure data
When, avoid Logging Curves such as density, neutron data be easy to be influenced by factors such as lithology, borehole condition, slurry compoundings and
The problem for causing gas content computational accuracy relatively low makes high temperature and pressure gas-bearing formation methane (CH4) and carbon dioxide (CO2) content quantitative
Calculated result and test sampling analysis result absolute error are reduced within 10% by existing 50%.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of petroleum gas gas-bearing formation component content measuring method of the present invention.
Fig. 2 is methane content primary calculations illustraton of model in the present invention.
Fig. 3 is carbon dioxide content primary calculations illustraton of model in the present invention.
Specific embodiment
Embodiments of the present invention are specifically described below.
With reference to flow chart shown in FIG. 1, a kind of petroleum gas gas-bearing formation component content measurement side of the present invention is illustrated in figure
Method, for measuring the content of methane and carbon dioxide in petroleum gas, the petroleum gas gas-bearing formation component content measurement side
Method the following steps are included:
S1, the sampling of high temperature and pressure gas-bearing formation mine gas: multiple groups gas is chosen from high temperature and pressure gas field well site using sample apparatus
Body sample, while measuring the pressure and temperature of sample position.
S2, multiple groups test experiments data are obtained: is tested according to the actual temperature of gas sample gas-bearing formation section and design of pressure
Condition, the measurement for carrying out bulk density and methane and carbon dioxide content to gaseous sample are tested, obtain by bulk density parameter,
The multi-group data that methane and carbon dioxide content, temperature parameter and pressure parameter are constituted.
S3, building primary calculations model: using the data fitting analyzing method in mathematical statistics scope, to above-mentioned multiple groups number
According to parameter fitting is carried out, methane and carbon dioxide content are respectively obtained with the primary of gas volume density, temperature and pressure change
Computation model.
Specific step is as follows: for more preferable, more accurate statement methane (CH4) and carbon dioxide (CO2) content and volume
Changing rule between density, temperature and pressure, take optimization data Fitting Analysis, first to temperature, pressure parameter at
Reason analysis, respectively obtains with methane (CH4) and three parameter group of carbon dioxide (CO2) content and bulk density, temperature and pressure
It is combined into the scatter plot of X-coordinate.In a particular embodiment, experimental data is handled, with bulk density, temperature and pressure
Three parameter combinations are that abscissa, methane (CH4) and carbon dioxide (CO2) content are that ordinate establishes scatter plot, such as Fig. 2 and Fig. 3
It is shown, wherein X is methane (CH4) content that experimental analysis obtains, and unit is (%), and Y is the carbon dioxide that experimental analysis obtains
(CO2) content, unit are (%)；Den is that experimental analysis obtains gas volume density value, and unit is (g/cm3)；T is temperature value,
Unit is (DEG C)；P is pressure value, and unit is (MPa)；In figure, R2 indicates square of each fitting formula related coefficient, and the value is bigger
The correlation of representation formula is better.
S4, high temperature and pressure gas-bearing formation section methane and carbon dioxide content are obtained: surveys and presses on high temperature and pressure gas-bearing formation section admission stratum
Data handles acquired gas-bearing formation section formation pressure data, and selection different depth measures to be laminated obtainedly
Force data calculates the straight slope of pressure relative depth as barometric gradient, and converts and obtain gas-bearing formation section gas volume density value.
In pressure and depth section, obtained formation pressure data is measured to same pressure system, different depth, theoretically
In a linear relationship, the slope of straight line is the barometric gradient of the pressure system, and barometric gradient can be obtained by simply conversion
Reservoir fluid bulk density value.It is actually detected to the temperature progress of high temperature and pressure gas-bearing formation, the temperature value of gas-bearing formation section is obtained, by gas
Bulk density, temperature, value formation pressure are updated to methane and CO2 meter is calculated in model, obtain in high temperature and pressure gas-bearing formation
Methane and carbon dioxide content.
More preferably, step 3, primary calculations model are as follows: X=146.5*xep (- 5.51* (den*log (T/P)/log (P))),
Y=64.782*ln (den*log(T/P)/log(P))+142.35；Wherein, X is the methane content that experimental analysis obtains, unit
It is the carbon dioxide content that experimental analysis obtains, unit % for %, Y；Den is that experimental analysis obtains gas volume density value, single
Position is g/cm3；T is temperature value, and unit is DEG C；P is pressure value, unit MPa.
More preferably, in step 2, using the bulk density of fluid volume penetron measurement gaseous sample；Pass through gas
The content of body component spectra analysis-e/or determining methane and carbon dioxide obtains more accurately content data, to continue after being
Formwork erection type and vertex measurement provide foundation.
More preferably, in step 2,40 ~ 50 groups of test experiments data are obtained in total, so that the model established is more accurate,
More closing to reality, to promote accuracy.
The above disclosure is only a preferred embodiment of the invention, cannot limit the right of the present invention with this certainly
Range, therefore according to equivalent variations made by scope of the present invention patent, it is still within the scope of the present invention.
Claims (4)
1. a kind of petroleum gas gas-bearing formation component content measuring method, for measuring methane and carbon dioxide in petroleum gas
Content, which is characterized in that the petroleum gas gas-bearing formation component content measuring method the following steps are included:
S1, the sampling of high temperature and pressure gas-bearing formation mine gas: multiple groups gas sample is chosen from high temperature and pressure gas field well site using sample apparatus
Product, while measuring the pressure and temperature of sample position；
S2, multiple groups test experiments data are obtained: according to the actual temperature of gas sample gas-bearing formation section and design of pressure experiment condition,
The measurement for carrying out bulk density and methane and carbon dioxide content to gaseous sample is tested, and is obtained by bulk density parameter, methane
The multi-group data constituted with carbon dioxide content, temperature parameter and pressure parameter；
S3, building primary calculations model: using the data fitting analyzing method in mathematical statistics scope, to above-mentioned multi-group data into
Row parameter fitting respectively obtains methane and carbon dioxide content with the primary calculations of gas volume density, temperature and pressure change
Model；
S4, high temperature and pressure gas-bearing formation section methane and carbon dioxide content are obtained: survey pressure data on high temperature and pressure gas-bearing formation section admission stratum,
Acquired gas-bearing formation section formation pressure data is handled, different depth is chosen and measures obtained strata pressure number
According to the straight slope of calculating pressure relative depth converts as barometric gradient and obtains gas-bearing formation section gas volume density value；To height
The temperature progress of warm high-pressure gas reservoir is actually detected, the temperature value of gas-bearing formation section is obtained, by gas volume density, temperature, strata pressure
Value is updated to methane and CO2 meter is calculated in model, obtains methane and carbon dioxide content in high temperature and pressure gas-bearing formation.
2. petroleum gas gas-bearing formation component content measuring method according to claim 1, it is characterised in that: in step 3,
The primary calculations model are as follows: X=146.5*xep (- 5.51* (den*log (T/P)/log (P))), Y=64.782*ln (den*
log(T/P)/log(P))+142.35；Wherein, X is the obtained methane content of experimental analysis, unit %, and Y obtains for experimental analysis
The carbon dioxide content arrived, unit %；Den is that experimental analysis obtains gas volume density value, unit g/cm3；T is temperature
Value, unit are DEG C；P is pressure value, unit MPa.
3. petroleum gas gas-bearing formation component content measuring method according to claim 1, it is characterised in that: in step 2,
Use the bulk density of fluid volume penetron measurement gaseous sample；By gas component spectroanalysis instrument measure methane with
The content of carbon dioxide.
4. petroleum gas gas-bearing formation component content measuring method according to claim 1, it is characterised in that: in step 2,
40 ~ 50 groups of test experiments data are obtained in total.
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| CN110722469B (en) * | 2019-11-25 | 2020-06-30 | 郑州磨料磨具磨削研究所有限公司 | Large thickness-diameter ratio grinding tool forming pressure gradient measuring device |
| CN111173506A (en) * | 2019-12-31 | 2020-05-19 | 中国矿业大学(北京) | Carbon dioxide leakage monitoring method and device |
| CN113866380B (en) * | 2021-09-29 | 2023-12-08 | 中海石油(中国)有限公司 | High-rank coal seam free gas content measuring device and measuring method |
| CN117310812A (en) * | 2023-09-27 | 2023-12-29 | 广东海洋大学 | Methane fluid longitudinal wave time difference skeleton parameter acquisition method |
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| US6604051B1 (en) * | 2000-04-17 | 2003-08-05 | Southwest Research Institute | System and method to determine thermophysical properties of a multi-component gas |
| CN104865614A (en) * | 2014-02-20 | 2015-08-26 | 中国石油化工股份有限公司 | Complicated reservoir fluid identification method based on variable skeleton parameter |
| CN104948164A (en) * | 2015-05-05 | 2015-09-30 | 中国海洋石油总公司 | Acquisition method of high-temperature high-pressure reservoir carbon dioxide fluid density skeleton parameters |
| CN105003258A (en) * | 2015-08-07 | 2015-10-28 | 中国海洋石油总公司 | Method for acquiring density framework parameters of methane fluid in high temperature high pressure air layer |
| CN105003257A (en) * | 2015-08-07 | 2015-10-28 | 中国海洋石油总公司 | Method for qualitatively recognizing high-temperature high-pressure methane gas layer and carbon dioxide gas layer |
| CN105089632A (en) * | 2015-08-04 | 2015-11-25 | 中国海洋石油总公司 | Method for obtaining CO2 fluid longitudinal wave time difference framework parameters of high-temperature and high-pressure reservoir |
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- 2016-04-26 CN CN201610262683.7A patent/CN105952446B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6604051B1 (en) * | 2000-04-17 | 2003-08-05 | Southwest Research Institute | System and method to determine thermophysical properties of a multi-component gas |
| CN104865614A (en) * | 2014-02-20 | 2015-08-26 | 中国石油化工股份有限公司 | Complicated reservoir fluid identification method based on variable skeleton parameter |
| CN104948164A (en) * | 2015-05-05 | 2015-09-30 | 中国海洋石油总公司 | Acquisition method of high-temperature high-pressure reservoir carbon dioxide fluid density skeleton parameters |
| CN105089632A (en) * | 2015-08-04 | 2015-11-25 | 中国海洋石油总公司 | Method for obtaining CO2 fluid longitudinal wave time difference framework parameters of high-temperature and high-pressure reservoir |
| CN105003258A (en) * | 2015-08-07 | 2015-10-28 | 中国海洋石油总公司 | Method for acquiring density framework parameters of methane fluid in high temperature high pressure air layer |
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