CN108710159A - A method of biogas factor of created gase is influenced for evaluating ground history Temperature Evolution - Google Patents
A method of biogas factor of created gase is influenced for evaluating ground history Temperature Evolution Download PDFInfo
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- CN108710159A CN108710159A CN201810719802.6A CN201810719802A CN108710159A CN 108710159 A CN108710159 A CN 108710159A CN 201810719802 A CN201810719802 A CN 201810719802A CN 108710159 A CN108710159 A CN 108710159A
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- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
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Abstract
The method that the present invention relates to a kind of to influence biogas factor of created gase for evaluating ground history Temperature Evolution, specially：One, according to biogenic gas simulation experiment as a result, temperature factor under obtaining condition of different temperatures；Two, according to the Temperature Evolution history of source bed position at certain well point position, the temperature factor Evolutionary History of the position is obtained, and seek the ground history mean temperature factor of the position；Three, using the ratio of ground history mean temperature factor and temperature factor now as the correction coefficient of the position；Four, the correction coefficient for seeking source bed position at multiple wells position, obtains the plan view of source bed bit correction coefficient；Five, using the hygrogram now of source bed position, the source bed position temperature factor figure under temperature condition now is obtained；Six, the temperature factor now of source bed position is multiplied with correction coefficient, obtains the ground history mean temperature factor graph of source bed position, the size that reflection ground history Temperature Evolution influences factor of created gase.The present invention with quantitative assessment history Temperature Evolution can influence biogas factor of created gase.
Description
Technical field
The present invention relates to the calculating of the biogas stock number in natural gas exploration field, and in particular to one kind is for evaluating ground
The method that history Temperature Evolution influences biogas factor of created gase.
Background technology
Biogas refers to different type organic matter in the day that mezzanine level is formed by the biological chemistry action of anaerobic bacteria
Right gas.Under condition of different temperatures, the activity of microorganism is different, causes methane quantum of output different.Fuertez et al.
（2017）It is the maximum temperature range of methane quantum of output between confirming 23 DEG C to 37 DEG C by biogenic gas simulation experiment, temperature is excessively high
Or the too low generation for being unfavorable for methane.I.e. under most suitable aerogenesis temperature condition, the quantum of output of methane is maximum.
According to this principle, in biogenic gas simulation experiment, in order to allow organic matter to generate methane as much as possible, experimenter is past
It is past to set experimental temperature to constant optimum temperature --- 30 DEG C or 35 DEG C.Therefore, the factor of created gase for testing acquisition is most suitable
Factor of created gase under temperature condition.However, under geological conditions, the variation of temperature and non-homogeneous raising may stablize constant, also may be used
It can reduce, the construction for depending on stratum lifts.So, how quantitative assessment history Temperature Evolution on biogas factor of created gase influence,
It is the major issue solved required for reasonable computation Source Rocks of Biogas gas production.
Invention content
The method that the object of the present invention is to provide a kind of to influence biogas factor of created gase for evaluating ground history Temperature Evolution, this
Kind is used to solve in biogenic gas simulation experiment to biogas for evaluating ground history Temperature Evolution on the method that biogas factor of created gase influences
The factor of created gase of source rock is set to the unreasonable problem of the factor of created gase under the conditions of optimum temperature.
The technical solution adopted by the present invention to solve the technical problems is：This for evaluating history Temperature Evolution is to biology
The method that gas factor of created gase influences：
One, according to biogenic gas simulation experiment as a result, the corresponding temperature factor of temperature when enabling methane quantum of output maximum is 1, other are warm
Methane quantum of output under the conditions of degree seeks ratio with maximum quantum of output respectively, obtains the temperature factor under condition of different temperatures；
Two, according to the Temperature Evolution history of source bed position at certain well point position, the temperature factor Evolutionary History of the position is obtained, goes forward side by side one
Step seeks the ground history mean temperature factor of the position；
Three, the ground history mean temperature factor for obtaining step 2 with the ratio of temperature factor now as the correction system of the position
Number；
Four, the correction coefficient for repeating to seek Step 2: step 3 source bed position at multiple wells position, using construction trend as
Constraint carries out linear interpolation, obtains the plan view of source bed bit correction coefficient；
Five, using the hygrogram now of source bed position, the source bed position temperature factor figure under temperature condition now is obtained；
Six, the temperature factor now of source bed position is multiplied with correction coefficient, obtains the ground history mean temperature factor of source bed position
Figure, the size that factor of created gase is influenced for reflecting ground history Temperature Evolution.
In said program at the position of well point source bed position ground history mean temperature factor acquiring method：
（1）According to individual well thermal evolution history, the temperature factor of ground history different times in source bed position at the position of well point is sought, temperature is established
Factor Evolutionary History；
（2）To averaging after the temperature factors of different times integral, be at the position of well point source bed position ground history mean temperature because
Number.
The invention has the advantages that：
1, the present invention considers the objective fact that biogas factor of created gase changes with temperature condition variation.The ground history established is average
Temperature factor with quantitative assessment history Temperature Evolution can influence biogas factor of created gase.
2, the present invention can be with reasonable computation Source Rocks of Biogas gas production.
3, research method of the present invention is simple, and operability is strong.Involved basic data include individual well thermal evolution history,
Warm gradient, structural map are the data grasped exploration of oil and gas field early stage, without additionally seeking.
Description of the drawings
Fig. 1 is factor of created gase temperature factor figure；
Fig. 2 is temperature and temperature factor Evolutionary History at different well point positions；
Fig. 3 is the structural map of source bed position；
Fig. 4 is the correction coefficient figure of ground history mean temperature factor；
Fig. 5 is Source Rocks of Biogas factor of created gase temperature factor figure under temperature condition now；
Fig. 6 is the ground history mean temperature factor graph of source bed position.
Specific implementation mode
The present invention will be further described below with reference to the drawings：
This method that biogas factor of created gase is influenced for evaluating ground history Temperature Evolution：
（1）According to the biogenic gas simulation experiment of Fuertez et al. (2017) as a result, with PH=7.5, salinity is 3.7 milligrams/it is vertical
The relationship of temperature and factor of created gase at square centimetre determines factor of created gase temperature factor.It is under this condition, maximum gas production is in Fig. 1
Temperature corresponding to 65ml is 33 DEG C, and it is 1 to enable temperature factor at this time.Gas production under other temperature conditions is produced with maximum respectively
Tolerance seeks ratio, obtains the temperature factor under condition of different temperatures.
（2）According to the Temperature Evolution history of source bed position at certain well point position, the temperature factor Evolutionary History of the position is obtained, and
Further seek the ground history mean temperature factor of the position；Illustrated in Fig. 2 the temperature of the source bed where 4 mouthfuls of wells and temperature because
Number Evolutionary History.
（3）Using the ratio of ground history mean temperature factor and temperature factor now as correction coefficient.4 mouthfuls are illustrated in table 1
Temperature factor now, mean temperature factor and the correction coefficient of source bed where well.
The temperature factor correction coefficient of 1 optimizing well of table
| Parameter | A1 wells | A2 wells | A3 wells | A4 wells |
| Temperature factor now | 0.87 | 0.87 | 0.85 | 0.13 |
| Mean temperature factor | 083 | 0.84 | 0.71 | 0.20 |
| Correction coefficient | 0.95 | 0.97 | 0.84 | 1.54 |
（4）Linear interpolation is carried out as constraint using construction trend, obtains the plan view of source bed bit correction coefficient.Fig. 3 is source
The structural map of rock stratum position, in general,（In same structural unit）The Temperature Evolution of same construction depth overlying strata experience is consistent,
Correction coefficient having the same.Therefore, construction trend can reasonably constrain interpolation.Fig. 4 is illustrated by structure constraint
Interpolation result afterwards.
（5）According to the hygrogram now of source bed position, the temperature factor figure under temperature condition now is obtained, sees Fig. 5.
（6）By the temperature factor now of source bed position（Temperature factor under temperature condition now）It is multiplied with correction coefficient,
Obtain the ground history mean temperature factor of source bed position.It can be used for reflecting the size that ground history Temperature Evolution influences factor of created gase.Fig. 6 exhibitions
The ground history mean temperature factor of source bed position is shown, the factor is higher, is more conducive to the generation of biogas.
Claims (2)
1. a kind of method influenced on biogas factor of created gase for evaluating ground history Temperature Evolution, it is characterised in that including walking as follows
Suddenly：
One, according to biogenic gas simulation experiment as a result, the corresponding temperature factor of temperature when enabling methane quantum of output maximum is 1, other are warm
Methane quantum of output under the conditions of degree seeks ratio with maximum quantum of output respectively, obtains the temperature factor under condition of different temperatures；
Two, according to the Temperature Evolution history of source bed position at certain well point position, the temperature factor Evolutionary History of the position is obtained, goes forward side by side one
Step seeks the ground history mean temperature factor of the position；
Three, the ground history mean temperature factor for obtaining step 2 with the ratio of temperature factor now as the correction system of the position
Number；
Four, the correction coefficient for repeating to seek Step 2: step 3 source bed position at multiple wells position, using construction trend as
Constraint carries out linear interpolation, obtains the plan view of source bed bit correction coefficient；
Five, using the hygrogram now of source bed position, the source bed position temperature factor figure under temperature condition now is obtained；
Six, the temperature factor now of source bed position is multiplied with correction coefficient, obtains the ground history mean temperature factor of source bed position
Figure, the size that factor of created gase is influenced for reflecting ground history Temperature Evolution.
2. the method according to claim 1 influenced on biogas factor of created gase for evaluating ground history Temperature Evolution, feature
It is：Ground history mean temperature factor acquiring method in source bed position at the well point position：
A, according to individual well thermal evolution history, the temperature factor of ground history different times in source bed position at the position of well point is sought, temperature is established
Factor Evolutionary History；
B, to the temperature factor of different times integrate after average, be well point position at source bed position ground history mean temperature because
Number.
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| CN104298883A (en) * | 2014-10-16 | 2015-01-21 | 中国石油大学(华东) | Establishment method for hydrocarbon source rock hydrocarbon production rate charts in petroleum resource assessment |
| US20150075776A1 (en) * | 2013-07-24 | 2015-03-19 | D. Jack Adams | Optimization of biogenic methane production from hydrocarbon sources |
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- 2018-07-01 CN CN201810719802.6A patent/CN108710159B/en not_active Expired - Fee Related
Patent Citations (6)
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| CN103454399A (en) * | 2012-06-05 | 2013-12-18 | 中国石油化工股份有限公司 | Simulation experiment device and method for hot-press hydrocarbon generation and discharge based on basin evolution history |
| US20150075776A1 (en) * | 2013-07-24 | 2015-03-19 | D. Jack Adams | Optimization of biogenic methane production from hydrocarbon sources |
| CN104298883A (en) * | 2014-10-16 | 2015-01-21 | 中国石油大学(华东) | Establishment method for hydrocarbon source rock hydrocarbon production rate charts in petroleum resource assessment |
| CN105181909A (en) * | 2015-10-19 | 2015-12-23 | 王文广 | Organic carbon recovery coefficient method based on oil-gas hydrocarbon generation-expulsion mechanism |
| CN105425316A (en) * | 2015-10-28 | 2016-03-23 | 中国石油化工股份有限公司 | Ancient landform restoration method based on impression method |
| CN107870373A (en) * | 2016-09-23 | 2018-04-03 | 中国石油化工股份有限公司 | The more phase noncontinuity hydrocarbon generation potential evaluation methods of Superimposed Basins |
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Inventor after: Zhu Huanlai Inventor after: Zhang Jingjun Inventor after: He Chunbo Inventor after: Wang Jingyi Inventor after: Shi Shangming Inventor after: Liu Xiaowen Inventor after: Wei Huabin Inventor after: Jiang Mingming Inventor before: Shi Shangming Inventor before: Liu Xiaowen Inventor before: Zhang Jingjun Inventor before: He Chunbo Inventor before: Wang Jingyi Inventor before: Wei Huabin Inventor before: Jiang Mingming |
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