CN110486010A - A kind of reservoir oil-gas possibility quantitative evaluation method based on gas detection logging parameter - Google Patents
A kind of reservoir oil-gas possibility quantitative evaluation method based on gas detection logging parameter Download PDFInfo
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- CN110486010A CN110486010A CN201910854681.0A CN201910854681A CN110486010A CN 110486010 A CN110486010 A CN 110486010A CN 201910854681 A CN201910854681 A CN 201910854681A CN 110486010 A CN110486010 A CN 110486010A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 238000011158 quantitative evaluation Methods 0.000 title claims abstract description 7
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 32
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 31
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 30
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 239000000470 constituent Substances 0.000 claims abstract description 5
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JXSJBGJIGXNWCI-UHFFFAOYSA-N diethyl 2-[(dimethoxyphosphorothioyl)thio]succinate Chemical compound CCOC(=O)CC(SP(=S)(OC)OC)C(=O)OCC JXSJBGJIGXNWCI-UHFFFAOYSA-N 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 235000013847 iso-butane Nutrition 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N sec-butylidene Natural products CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 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
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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)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention discloses a kind of reservoir oil-gas possibility quantitative evaluation method based on gas detection logging parameter, includes the following steps: 1) to pre-process gas measured data: to C1To C5All the hydrocarbon component numerical value add 0.1ppm；2) two derivative parameters: oil gas index Y=(4C are defined4+5C5)/(C1+2C2), oil gas index Z=(C4+C5)/(C1+C2；3) the heavy constituent C in hydrocarbon component is surveyed with gas respectively using oil gas index Y and oil gas index Z3And C4+C5It is intersected to obtain 4 intersection factor Ss respectively1、S2、S3And S4；4) oily abundance S is calculated using 4 intersection factorsH；5) using based on oily abundance SHReservoir fluid quantitative interpretation standard obtain explanation conclusion.This method is suitable for Different Strata, different oily types, main to consider reservoir thickness and oily abundance SHSize, interpretation process are simple, efficient.
Description
Technical field
The present invention relates to gas detection logging reservoir oil-gas possibility to explain field, utilizes gas detection logging parameter more particularly to a kind of
And its method of derivative parameter quantitative evaluation reservoir oil-gas possibility, it is suitable for conventional gas detection logging and Flair well logging.
Background technique
Gas detection logging measurement data mainly includes gas full dose (Tg), methane (C1), ethane (C2), propane (C3), iso-butane
(iC4), normal butane (nC4), isopentane (iC5) and pentane (nC5) etc. gaseous hydrocarbons component data.The hydrocarbon group of gas detection logging measurement
Score value is the volumetric concentration from the hydrocarbon component deviate from drilling fluid in gaseous mixture, establishes interpretation chart using gas detection logging parameter
Can be with qualitative interpretation properties of fluid in bearing stratum, but there is presently no calculate reservoir oily abundance using logging parameters direct quantitative
Method.It is rich that the patent of this application provides a kind of reservoir oily for surveying parameter and its derivative parameter intersection model based on gas
Quantitative calculation method is spent, it is simple using this method quantitative assessment reservoir oil-gas possibility process, efficient.From the reference text retrieved at present
It offers and sees, not yet find similar article and patent.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, provides a kind of reservoir based on gas detection logging parameter
Oil-gas possibility quantitative evaluation method, the present invention are rich based on gas survey the hydrocarbon component and its derivative parameter intersection feature and reservoir oily
Mathematical relationship between degree, obtained one kind can be with the parameter oily abundance S of quantitative assessment reservoir oil-gas possibilityH, and establish
Based on oily abundance SHReservoir oil-gas possibility quantitative interpretation standard improves reservoir fluid well logging Fast Evaluation efficiency and meets
Rate.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of reservoir oil-gas possibility quantitative evaluation method based on gas detection logging parameter, includes the following steps:
(1) gas measured data is pre-processed: to C1To C5All the hydrocarbon component numerical value add 0.1ppm；
(2) two derivative parameters: oil gas index Y=(4C are defined4+5C5)/(C1+2C2), oil gas index Z=(C4+C5)/
(C1+C2)；
(3) the heavy constituent C in hydrocarbon component is surveyed with gas respectively using oil gas index Y and oil gas index Z3And C4+C5Respectively into
Row intersection obtains 4 intersection factor Ss1、S2、S3And S4；It is as follows to intersect factor calculation method:
1. oil gas index Y and the hydrocarbon component C3It crosses to obtain intersection factor S1: S1=(C3-Y)/C3* 100%；
2. oil gas index Y and the hydrocarbon component C4+C5It crosses to obtain intersection factor S2: S2=(C4+C5-Y)/(C4+C5) * 100%；
3. oil gas index Z and the hydrocarbon component C3It crosses to obtain intersection factor S3: S3=(C3-Z)/C3* 100%；
4. oil gas index Z and the hydrocarbon component C4+C5It crosses to obtain intersection factor S4: S4=(C4+C5-Z)/(C4+C5) * 100%；
(4) oily abundance S is calculated using 4 intersection factorsH, calculation formula: SH=(S1+S2+S3+S4)/4；
(5) using based on oily abundance SHReservoir fluid quantitative interpretation standard obtain explanation conclusion, wherein distinguish oil
Layer needs to combine C with gas-bearing formation1/C3Ratio.
Compared with prior art, the beneficial effects brought by the technical solution of the present invention are as follows:
1, the present invention derives parameter (oil gas index Y, oil gas index Z) on reservoir section with it using gas survey the hydrocarbon component
Variation characteristic relationship establishes curve intersection model, and immediately arriving at can be rich with the parameter oily of quantitative assessment reservoir oil-gas possibility
Spend SH, and establish and be based on oily abundance SHReservoir oil-gas possibility explain quantitative criteria, for qualitative interpretation method,
The influence that artificial subjective factor explains reservoir fluid is greatly reduced, improves the objectivity and accuracy of reservoir fluid explanation.
2, previous gas measured data means of interpretation and plate can only qualitative interpretation reservoir fluid variation, different stratum, no
The method and standard difference that same type oil uses are bigger, while qualitative interpretation influence factor is more, big and accurate using difficulty
It spends low.This method is suitable for Different Strata, different oily types, mainly considers reservoir thickness and oily abundance in the same area
SHSize, can accurately distinguish oil reservoir, gas-bearing formation, oil-water common-layer, oil-containing water layer and water layer etc., and interpretation process is simple, efficient.
Detailed description of the invention
Fig. 1 is oily abundance SHCalculating and explained flowchart；
Fig. 2 is the area the present embodiment Zhong Mou well oil/gas show section oily abundance SHAnd interpretation results figure.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
The present invention provides a kind of method for evaluating reservoir oil-gas possibility using gas detection logging parameter and its derivative parameter quantitative,
Include the following steps:
1) gas measured data is pre-processed: to C1To C5All the hydrocarbon component numerical value add 0.1ppm；
2) two derivative parameters: oil gas index Y=(4C are defined4+5C5)/(C1+2C2), oil gas index Z=(C4+C5)/(C1
+C2)；
3) the heavy constituent C in hydrocarbon component is surveyed with gas respectively using oil gas index Y and oil gas index Z3And C4+C5Respectively into
Row intersection obtains 4 intersection factor Ss1、S2、S3And S4, and lithological profile is combined to obtain the data such as reservoir top bottom depth and thickness.
Wherein step 3) centre-exchange-meeting factor calculation method:
1. oil gas index Y and the hydrocarbon component C3It crosses to obtain intersection factor S1: S1=(C3-Y)/C3* 100%
2. oil gas index Y and the hydrocarbon component C4+C5It crosses to obtain intersection factor S2: S2=(C4+C5-Y)/(C4+C5) * 100%
3. oil gas index Z and the hydrocarbon component C3It crosses to obtain intersection factor S3: S3=(C3-Z)/C3* 100%
4. oil gas index Z and the hydrocarbon component C4+C5It crosses to obtain intersection factor S4: S4=(C4+C5-Z)/(C4+C5) * 100%
4) oily abundance S is calculated using 4 intersection factorsH, and depth of reservoirs is combined to obtain corresponding oily Abundances,
Calculation formula: SH=(S1+S2+S3+S4)/4；
5) using based on oily abundance SHReservoir fluid quantitative interpretation standard obtain explanation conclusion.
Specifically, with certain area well oil/gas show section oily abundance SHCalculating for:
1) gas measured data is pre-processed: to C1To C5All the hydrocarbon component numerical value add 0.1ppm；
2) two derivative parameters: oil gas index Y=(4C are defined4+5C5)/(C1+2C2), oil gas index Z=(C4+C5)/(C1
+C2)；
3) the heavy constituent C in hydrocarbon component is surveyed with gas respectively using oil gas index Y and oil gas index Z3And C4+C5Respectively into
Row intersection obtains 4 intersection factor Ss1、S2、S3And S4；
Wherein step 3) centre-exchange-meeting factor calculation method:
1. oil gas index Y and the hydrocarbon component C3It crosses to obtain intersection factor S1: S1=(C3-Y)/C3* 100%；
2. oil gas index Y and the hydrocarbon component C4+C5It crosses to obtain intersection factor S2: S2=(C4+C5-Y)/(C4+C5) * 100%；
3. oil gas index Z and the hydrocarbon component C3It crosses to obtain intersection factor S3: S3=(C3-Z)/C3* 100%；
4. oil gas index Z and the hydrocarbon component C4+C5It crosses to obtain intersection factor S4: S4=(C4+C5-Z)/(C4+C5) * 100%；
4) oily abundance S is calculated using 4 intersection factorsH, calculation formula: SH=(S1+S2+S3+S4)/4；It respectively obtains
The oily abundance S of each hydrocarbon show zonesH, and draw response curve；
5) oily abundance S is based on using local areaHReservoir fluid quantitative interpretation standard obtain explanation conclusion, wherein distinguishing
Oil reservoir and gas-bearing formation need to combine C1/C3Ratio；It is specifically shown in the following table 1 and Fig. 1, Fig. 2:
1772.0-1777.0m reservoir SHFor 57.0%, C1/C3Greater than 50, it is construed to gas-bearing formation；
1783.0-1786.0m reservoir SHFor 29.0%, C1/C3Greater than 50, it is construed to dried layer；
1786.0-1792.0m reservoir SHFor 84.0%, C1/C3Greater than 50, it is construed to gas-bearing formation；
1795.0-1797.0m reservoir SHFor 70.0%, C1/C3Less than 50, it is construed to oil reservoir；
1798.0-1800.0m reservoir SHFor 60.0%, C1/C3Less than 50, it is construed to oil reservoir；
1805.0-1808.0m reservoir SHFor 69.0%, C1/C3Less than 50, it is construed to oil reservoir；
1817.0-1820.0m reservoir SHFor 14.0%, C1/C3Less than 50, it is construed to dried layer；
1830.0-1833.0m reservoir SHFor 8.0%, C1/C3Less than 50, it is construed to dried layer.
Table 1
Table 1 is that certain area is based on oily abundance SHReservoir fluid quantitative interpretation standard.
The present invention is not limited to embodiments described above.Above the description of specific embodiment is intended to describe and say
Bright technical solution of the present invention, the above mentioned embodiment is only schematical, is not restrictive.This is not being departed from
In the case of invention objective and scope of the claimed protection, those skilled in the art may be used also under the inspiration of the present invention
The specific transformation of many forms is made, within these are all belonged to the scope of protection of the present invention.
Claims (1)
1. a kind of reservoir oil-gas possibility quantitative evaluation method based on gas detection logging parameter, which comprises the steps of:
(1) gas measured data is pre-processed: to C1To C5All the hydrocarbon component numerical value add 0.1ppm；
(2) two derivative parameters: oil gas index Y=(4C are defined4+5C5)/(C1+2C2), oil gas index Z=(C4+C5)/(C1+
C2)；
(3) the heavy constituent C in hydrocarbon component is surveyed with gas respectively using oil gas index Y and oil gas index Z3And C4+C5It is handed over respectively
It can obtain 4 intersection factor Ss1、S2、S3And S4；It is as follows to intersect factor calculation method:
1. oil gas index Y and the hydrocarbon component C3It crosses to obtain intersection factor S1: S1=(C3-Y)/C3* 100%；
2. oil gas index Y and the hydrocarbon component C4+C5It crosses to obtain intersection factor S2: S2=(C4+C5-Y)/(C4+C5) * 100%；
3. oil gas index Z and the hydrocarbon component C3It crosses to obtain intersection factor S3: S3=(C3-Z)/C3* 100%；
4. oil gas index Z and the hydrocarbon component C4+C5It crosses to obtain intersection factor S4: S4=(C4+C5-Z)/(C4+C5) * 100%；
(4) oily abundance S is calculated using 4 intersection factorsH, calculation formula: SH=(S1+S2+S3+S4)/4；
(5) using based on oily abundance SHReservoir fluid quantitative interpretation standard obtain explanation conclusion.
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