CN102748004A - Method for determining hydrocarbon saturation of gas logging - Google Patents
Method for determining hydrocarbon saturation of gas logging Download PDFInfo
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- CN102748004A CN102748004A CN2012101859259A CN201210185925A CN102748004A CN 102748004 A CN102748004 A CN 102748004A CN 2012101859259 A CN2012101859259 A CN 2012101859259A CN 201210185925 A CN201210185925 A CN 201210185925A CN 102748004 A CN102748004 A CN 102748004A
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Abstract
The invention relates to a method for determining the hydrocarbon saturation of gas logging. The method comprises the following steps of: acquiring and recording values of non-hydrocarbon components such as gas logging total hydrocarbon and methane through logging devices such as a gas logging apparatus and a comprehensive logging instrument; reading the maximum abnormity value Ct of the total hydrocarbon or methane in an oil-gas abnormity display interval; preferably selecting a gas logging background value Cb of an oil-gas display layer; selecting the hydrocarbon saturation index n of regional gas logging; and working out the hydrocarbon saturation Sh of a specific oil-gas display interval, and outputting a computed result. The method is low in cost, is easy, convenient and accurate, and has a wide application range. According to the method, the hydrocarbon saturations of gas logging oil-gas display layers in 3,700 intervals of more than 610 wells are explained and computed in the Jianghan Basin, the Western Hubei-Eastern Chongqing Area, the Tsaidam Basin, the Ordos Basin and the Tarim Basin, errors do not surpass 15 percent generally in comparison to the logging measurement computed result, the hydrocarbon saturation accuracy is increased by over one time in comparison to the hydrocarbon saturation accuracy determined with a thermal vacuum distillation all-dehydration technology, and the rapid explanation requirements of logging oil-gas display fields can be well met.
Description
Technical field
The present invention relates in the well logging process, confirm the hydrocarbon saturation of gas survey abnormal show layer, the method for explaining key parameter is provided for evaluating reservoir.
Background technology
In petroleum exploration and development well logging service process, traditional mud logging hydrocarbon saturation confirms that method is to adopt the thermal vacuum distillation to take off (VMS) data entirely to ask for.
Definite hydrocarbon saturation is taken off in the thermal vacuum distillation entirely; Mainly be to use take off full device to the drilling fluid sample of a certain amount of (being generally 250ml) stir, the thermal vacuum heating; Collect gas appearance, therefrom take out all natural gas in the drilling fluid, collect and measure the gas volume of taking out; And use the content of non-hydrocarbons natural gases such as wherein hydro carbons and carbon dioxide of well logging gas chromatograph quantitative assay, hydrogen, and then ask for the stratum hydrocarbon saturation.This saturation ratio is regarded as the stratum hydrocarbon saturation, is also referred to as the stratum hydrocarbon saturation usually.
What technological actual measurement was taken off in the thermal vacuum distillation entirely is under the ground condition; Each constituent content of natural gas in the unit volume drilling fluid; And have certain correlation between the hydrocarbon saturation of stratum, can estimate the stratum hydrocarbon saturation through the lost correction of natural gas, the degree of accuracy is relatively low; Poor reliability, lost correction coefficient confirms that difficulty is big.
Summary of the invention
The objective of the invention is to the above-mentioned state of the art, be intended to explain the reliable data that provides, improve the oil gas interpretation coincidence rate, particularly improve definite method of the mud logging hydrocarbon saturation of the logging explanation precision under the weak oil condition for well logging oil gas.
The implementation of the object of the invention does, definite method of mud logging hydrocarbon saturation, and concrete steps are:
1) gathers and write down gas through well logging devices such as mud logging unit, comprehensive logging instruments and survey total hydrocarbon, methane and other hydrocarbon component, carbon dioxide and hydrogen non-hydrocarbon component value;
2) collection of component Value Data, record step-lengths such as gas survey abnormal show layer total hydrocarbon or methane are 1 point/m～1 point/0.1m, common 1 point/m;
3) read oil and gas anomaly and show total hydrocarbon or methane largest outliers Ct (%) in the interval;
4) preferentially choose near the reference water layer gas of hydrocarbon show zones and survey total hydrocarbon or methane content average; During not with reference to water layer; Then choose the gas of hydrocarbon show zones top 5～30m scope inner cap interval and survey total hydrocarbon or methane content average, as the background gas Cb of this hydrocarbon show zones;
5) chosen area gas is surveyed hydrocarbon saturation index n, and according to classifying and selecting from different places, scope is 2～7;
6) according to formula S h=1-(Ct/Cb)
-1/n, ask for the hydrocarbon saturation Sh of concrete oil interval, mud logging hydrocarbon saturation design formulas:
Sh=1-Sw?,
Sw=(Ct/Cb)
-1/n
In the formula: Sw is the stratum water saturation, decimally expression;
Ct is total hydrocarbon or the hydrocarbon constituent content that gas is surveyed the continuous measurement display layer, representes with %;
Cb is the background value that gas is surveyed the abnormal show layer, representes with %;
N is that regional gas is surveyed hydrocarbon saturation exponential quantity, dimensionless;
Ct/Cb is commonly referred to hydrocarbon ratio, representes dimensionless, i.e. Rc=Ct/Cb with Rc;
7) output result of calculation.
The invention solves gas and survey the problem of quick calculating formation hydrocarbon saturation, cost is low, confirms that than thermal vacuum distillation (VMS) technology of taking off full oily display layer hydrocarbon saturation is easier, accurate, and accommodation is wider.
The present invention is well, 3700 intervals surplus basin, Jiang-Han Area, area, east, west place in Hubei Chongqing, the Caidamu Basin, basin, Erdos, Tarim Basin explanation calculating gas survey hydrocarbon show zones gas saturation 610; The error of comparing with log measurement result of calculation generally is no more than 15%; The oil saturation precision that Billy confirms with the thermal vacuum distillation technology of taking off entirely is more than doubled, and can satisfy the on-the-spot quick look needs of well logging oil preferably.
Description of drawings
Fig. 1 is a workflow block diagram of the present invention,
Fig. 2 is a real work flow process detail drawing of the present invention.
The specific embodiment
With reference to Fig. 1,2, concrete steps of the present invention are:
1) gather and write down gas through well logging devices such as mud logging unit, comprehensive logging instruments and survey total hydrocarbon, methane and non-hydrocarbon component values such as other hydrocarbon component, carbon dioxide and hydrogen,
2) collection of component Value Data, record step-lengths such as gas survey abnormal show layer total hydrocarbon or methane are 1 point/m～1 point/0.1m, common 1 point/m;
3) read oil and gas anomaly and show total hydrocarbon or methane largest outliers Ct (%) in the interval.
Hydrocarbon show zones largest outliers Ct (%) obtaining value method: Ct should get gas and survey the display layer maximum value, evades disturbing showing, preferentially selects the total hydrocarbon data for use, when total hydrocarbon is representative relatively poor, selects component data such as methane for use;
4) preferentially choose near the reference water layer gas of hydrocarbon show zones and survey total hydrocarbon or methane content average; If not with reference to water layer; Then choose the gas of hydrocarbon show zones top 5～30m scope inner cap interval and survey total hydrocarbon or methane content average, as the background gas Cb of this hydrocarbon show zones;
Cb should get and survey the demonstration base value with the gas of cap rock in typical water layer adjacent in one deck position or the display layer top 5～30m scope is background value.When Ct got the total hydrocarbon data, Cb got the total hydrocarbon background data corresponding with it; When Ct got the methane data, Cb got the methane background data corresponding with it; Ct and Cb and the like coupling.
5) chosen area gas is surveyed hydrocarbon saturation index n, according to classifying and selecting from different places.
Zone gas is surveyed hydrocarbon saturation index n value and is confirmed method:
It is 50% that the minimum hydrocarbon saturation of oil-gas Layer is defined as 0.5, and promptly regional oil-gas Layer gas is surveyed the minimum hydrocarbon content value Ctmin of abnormal show and there is following relationship in Cb:
(Ctmin/Cb)
-1/n=0.5?，Rcmin=?Ctmin/Cb；
n=Log(Ctmin/Cb)/?Log?2?,?n=?Log?Rcmin?/?Log?2。
In the formula: Rcmin is the minimum hydrocarbon ratio of oil-gas Layer.
Basin, Jiang-Han Area tertiary system clastic oil reservoir Rcmin is 4, n=2; The gentle layer of Caidamu Basin tertiary system clastic lightweight oil reservoir Rcmin is 6, n=2.6; Formation of marine facies in southern China carbonate rock gas-bearing formation Rcmin is 8, n=3; Tarim Basin marine carbonate rock oil-gas Layer Rcmin is 10, n=3.3; The unconventional shale gas-bearing formation Rcmin in south is 100, n=6.6.From different places, the value of n is different, and scope is generally 2～7.
6) according to formula S h=1-(Ct/Cb)
-1/n, ask for the hydrocarbon saturation Sh of concrete oil interval.Mud logging hydrocarbon saturation design formulas:
Sh=1-Sw?,
Sw=(Ct/Cb)
-1/n；
In the formula: Sw is the stratum water saturation, decimally expression;
Ct is total hydrocarbon or the hydrocarbon constituent content that gas is surveyed the continuous measurement display layer, representes with %;
Cb is the background value that gas is surveyed the abnormal show layer, representes with %;
N is that regional gas is surveyed hydrocarbon saturation exponential quantity, dimensionless;
Ct/Cb is commonly referred to hydrocarbon ratio, representes dimensionless, i.e. Rc=Ct/Cb with Rc.
7) output result of calculation supplies the user to estimate reservoir property and uses.Usually, the hydrocarbon saturation of oil-gas Layer is not less than 0.5 or 50%, and the hydrocarbon saturation of hydrocarbonaceous water layer is not more than 0.5 or 50%.
Claims (4)
1. definite method of mud logging hydrocarbon saturation is characterized in that concrete steps are:
1) gathers and write down gas through well logging devices such as mud logging unit, comprehensive logging instruments and survey total hydrocarbon, methane and other hydrocarbon component, carbon dioxide and hydrogen non-hydrocarbon component value;
2) collection of component Value Data, record step-lengths such as gas survey abnormal show layer total hydrocarbon or methane are 1 point/m～1 point/0.1m, common 1 point/m;
3) read oil and gas anomaly and show total hydrocarbon or methane largest outliers Ct (%) in the interval;
4) preferentially choose near the reference water layer gas of hydrocarbon show zones and survey total hydrocarbon or methane content average; During not with reference to water layer; Then choose the gas of hydrocarbon show zones top 5～30m scope inner cap interval and survey total hydrocarbon or methane content average, as the background gas Cb of this hydrocarbon show zones;
5) chosen area gas is surveyed hydrocarbon saturation index n, and according to classifying and selecting from different places, scope is 2～7;
6) according to formula S h=1-(Ct/Cb)
-1/n, ask for the hydrocarbon saturation Sh of concrete oil interval, mud logging hydrocarbon saturation design formulas:
Sh=1-Sw?,
Sw=(Ct/Cb)
-1/n
In the formula: Sw is the stratum water saturation, decimally expression;
Ct is total hydrocarbon or the hydrocarbon constituent content that gas is surveyed the continuous measurement display layer, representes with %;
Cb is the background value that gas is surveyed the abnormal show layer, representes with %;
N is that regional gas is surveyed hydrocarbon saturation exponential quantity, dimensionless;
Ct/Cb is commonly referred to hydrocarbon ratio, representes dimensionless, i.e. Rc=Ct/Cb with Rc;
7) output result of calculation.
2. definite method of mud logging hydrocarbon saturation according to claim 1; It is characterized in that hydrocarbon show zones largest outliers Ct obtaining value method: Ct should get gas and survey the display layer maximum value; Preferentially select the total hydrocarbon data for use, when total hydrocarbon is representative relatively poor, select component data such as methane for use;
3. definite method of mud logging hydrocarbon saturation according to claim 1 is characterized in that the gas survey that Cb should get with cap rock in typical water layer adjacent in one deck position or the display layer top 5～30m scope shows that base value is a background value.When Ct got the total hydrocarbon data, Cb got the total hydrocarbon background data corresponding with it; When Ct got the methane data, Cb got the methane background data corresponding with it; Ct and Cb and the like coupling.
4. definite method of mud logging hydrocarbon saturation according to claim 1 is characterized in that chosen area gas surveys hydrocarbon saturation index n, according to classifying and selecting from different places,
Zone gas is surveyed hydrocarbon saturation index n value and is confirmed method:
It is 50% that the minimum hydrocarbon saturation of oil-gas Layer is defined as 0.5, and promptly regional oil-gas Layer gas is surveyed the minimum hydrocarbon content value Ctmin of abnormal show and there is following relationship in Cb:
(Ctmin/Cb)
-1/n=0.5?，Rcmin=?Ctmin/Cb；
n=Log(Ctmin/Cb)/?Log?2?,?n=?Log?Rcmin?/?Log?2；
In the formula: Rcmin is the minimum hydrocarbon ratio of oil-gas Layer.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912268A (en) * | 2014-03-28 | 2014-07-09 | 中石化江汉石油工程有限公司测录井公司 | Shale reservoir gas saturation determining method based on TOC |
| CN104181090A (en) * | 2013-05-27 | 2014-12-03 | 中国石油化工股份有限公司 | Hydrocarbon saturation evaluation method based on rock electrical structure coefficient |
| CN104675391A (en) * | 2013-11-26 | 2015-06-03 | 中国石油化工股份有限公司 | Method for calculating oil saturation of stratum |
| 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 |
| CN105350959A (en) * | 2015-11-06 | 2016-02-24 | 中石化石油工程技术服务有限公司 | Method for determining gas saturation of shale gas reservoir through well-logging lithologic density |
| CN105370270A (en) * | 2015-11-06 | 2016-03-02 | 中石化石油工程技术服务有限公司 | Method for determining gas saturation of shale gas reservoir by longitudinal-transverse wave time difference of dipole acoustic waves |
| 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 |
| CN111827994A (en) * | 2020-07-30 | 2020-10-27 | 中石化江汉石油工程有限公司测录井公司 | Method for explaining sandstone oil-water layer by using gas measurement of percentage content of total hydrocarbons and humidity ratio of hydrocarbon components |
| CN114036782A (en) * | 2022-01-06 | 2022-02-11 | 北京航空航天大学东营研究院 | Method for calculating true value and background value of well gas logging |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102396A (en) * | 1977-06-23 | 1978-07-25 | Union Oil Company Of California | Determining residual oil saturation following flooding |
| US4312049A (en) * | 1979-10-29 | 1982-01-19 | Mobil Oil Corporation | Method of identifying gas, oil and water zones in a subsurface formation |
| CN101363315A (en) * | 2007-08-09 | 2009-02-11 | 普拉德研究及开发股份有限公司 | Method for quantifying resistivity and hydrocarbon saturation in thin bed formations |
| CN101806215A (en) * | 2010-03-05 | 2010-08-18 | 中国石油集团川庆钻探工程有限公司 | Method for discriminating reservoir fluid type by irreducible water saturation data |
| RU2403385C1 (en) * | 2009-04-13 | 2010-11-10 | Общество с ограниченной ответственностью "Реагент" | Method for determining oil-gas bearing intervals |
| CN102312671A (en) * | 2011-09-16 | 2012-01-11 | 中国石油化工股份有限公司 | Method capable of fast explaining and evaluating reservoir fluid properties |
| CN102383788A (en) * | 2011-09-16 | 2012-03-21 | 中国石油化工股份有限公司 | Underground reservoir porosity measurement method during drilling |
-
2012
- 2012-06-06 CN CN201210185925.9A patent/CN102748004B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102396A (en) * | 1977-06-23 | 1978-07-25 | Union Oil Company Of California | Determining residual oil saturation following flooding |
| US4312049A (en) * | 1979-10-29 | 1982-01-19 | Mobil Oil Corporation | Method of identifying gas, oil and water zones in a subsurface formation |
| CN101363315A (en) * | 2007-08-09 | 2009-02-11 | 普拉德研究及开发股份有限公司 | Method for quantifying resistivity and hydrocarbon saturation in thin bed formations |
| RU2403385C1 (en) * | 2009-04-13 | 2010-11-10 | Общество с ограниченной ответственностью "Реагент" | Method for determining oil-gas bearing intervals |
| CN101806215A (en) * | 2010-03-05 | 2010-08-18 | 中国石油集团川庆钻探工程有限公司 | Method for discriminating reservoir fluid type by irreducible water saturation data |
| CN102312671A (en) * | 2011-09-16 | 2012-01-11 | 中国石油化工股份有限公司 | Method capable of fast explaining and evaluating reservoir fluid properties |
| CN102383788A (en) * | 2011-09-16 | 2012-03-21 | 中国石油化工股份有限公司 | Underground reservoir porosity measurement method during drilling |
Cited By (13)
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|---|---|---|---|---|
| CN104181090B (en) * | 2013-05-27 | 2016-11-16 | 中国石油化工股份有限公司 | A kind of hydrocarbon saturation evaluation methodology based on rock electricity structural coefficient |
| CN104181090A (en) * | 2013-05-27 | 2014-12-03 | 中国石油化工股份有限公司 | Hydrocarbon saturation evaluation method based on rock electrical structure coefficient |
| CN104675391A (en) * | 2013-11-26 | 2015-06-03 | 中国石油化工股份有限公司 | Method for calculating oil saturation of stratum |
| CN104675391B (en) * | 2013-11-26 | 2018-04-10 | 中国石油化工股份有限公司 | The method for calculating stratum oil saturation |
| CN103912268A (en) * | 2014-03-28 | 2014-07-09 | 中石化江汉石油工程有限公司测录井公司 | Shale reservoir gas saturation determining method based on TOC |
| 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 |
| CN104948164B (en) * | 2015-05-05 | 2017-06-16 | 中国海洋石油总公司 | The acquisition methods of HTHP reservoir carbon dioxide stream volume density matrix parameter |
| CN105370270A (en) * | 2015-11-06 | 2016-03-02 | 中石化石油工程技术服务有限公司 | Method for determining gas saturation of shale gas reservoir by longitudinal-transverse wave time difference of dipole acoustic waves |
| CN105350959A (en) * | 2015-11-06 | 2016-02-24 | 中石化石油工程技术服务有限公司 | Method for determining gas saturation of shale gas reservoir through well-logging lithologic density |
| 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 |
| CN111827994A (en) * | 2020-07-30 | 2020-10-27 | 中石化江汉石油工程有限公司测录井公司 | Method for explaining sandstone oil-water layer by using gas measurement of percentage content of total hydrocarbons and humidity ratio of hydrocarbon components |
| CN114036782A (en) * | 2022-01-06 | 2022-02-11 | 北京航空航天大学东营研究院 | Method for calculating true value and background value of well gas logging |
| CN114036782B (en) * | 2022-01-06 | 2022-05-10 | 北京航空航天大学东营研究院 | Method for calculating true value and background value of well gas logging |
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