CN104295291B - A kind of method that component ratio evaluation properties of fluid in bearing stratum is surveyed using gas - Google Patents
A kind of method that component ratio evaluation properties of fluid in bearing stratum is surveyed using gas Download PDFInfo
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- CN104295291B CN104295291B CN201410382496.3A CN201410382496A CN104295291B CN 104295291 B CN104295291 B CN 104295291B CN 201410382496 A CN201410382496 A CN 201410382496A CN 104295291 B CN104295291 B CN 104295291B
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000012530 fluid Substances 0.000 title claims abstract description 37
- 238000011156 evaluation Methods 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 93
- 239000003921 oil Substances 0.000 claims description 35
- 230000008859 change Effects 0.000 claims description 16
- 229930195733 hydrocarbon Natural products 0.000 claims description 16
- 150000002430 hydrocarbons Chemical class 0.000 claims description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 12
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 12
- 239000004215 Carbon black (E152) Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 8
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 5
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 4
- 239000001273 butane Substances 0.000 claims description 4
- 239000000295 fuel oil Substances 0.000 claims description 4
- 239000003345 natural gas Substances 0.000 claims description 4
- 239000001294 propane Substances 0.000 claims description 4
- 230000035800 maturation Effects 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims 1
- 238000013139 quantization Methods 0.000 abstract description 3
- 238000011157 data evaluation Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 238000000205 computational method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 101100170173 Caenorhabditis elegans del-1 gene Proteins 0.000 description 1
- 241000772415 Neovison vison Species 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009466 transformation Effects 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
- E21B49/086—Withdrawing samples at the surface
-
- 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
- E21B49/0875—Well testing, e.g. testing for reservoir productivity or formation parameters determining specific fluid parameters
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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)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides a kind of method that new gas based on gas measuring logging data surveys component ratio evaluation properties of fluid in bearing stratum, including：1)ITnThe calculating of serial index；2)ITnSerial index chart interpretation application process；3)ITExponent pair answers well depth to draw and explains map.Compared with prior art, the method for gas measuring logging data evaluation properties of fluid in bearing stratum provided by the present invention, has done compared with major reform to original Triangle Chart method, has established new explanation map application form.The I of quantizationTnSerial index can survey parameter with other gas, or even log parameter is combined, and is flexibly used, and be provided conveniently for evaluation oil-gas Layer.
Description
Technical field
The present invention relates to gas detection logging data are used, based on gas composition ratio, the side of evaluation oil and gas reservoir fluid properties
Method；Belong to conventional gas measuring logging data data technique process field.
Background technology
Gas detection logging is to pass through drilling fluid degasser from drilling well using gas detecting system or by some cycles detection and analysis
A kind of logging method of the hydrocarbon gas content detached in liquid, it can find oil/gas show, forecast well kick, blowout, gas in time
Invade, overall merit reservoir.The essence of gas detection logging is by analyzing the fuel gas entered in drilling process in drilling fluid
Component and its content, analysis determine whether the oil-gas Layer of industrial value, that is to say, that by analyzing the content of gas in drilling fluid,
With the content of the natural gas in direct measurement stratum and its it can form.
At present, gas detection logging method present in prior art is as follows：
1) triangle interpretation chart
Hydrocarbon component Triangle Chart method is the gas explanation side established based on thermal vacuum retort gas analysis (VMS) data
Method.Triangle interpretation chart be by triangle coordinate system with triangle be worth district's groups into.Triangle coordinate is substantially a pole
Coordinate, polar angle are 60 °, and pole side is 20 units, form equilateral triangle.Three summits of equilateral triangle are respectively coordinate system
Zero point, it is to correspond to C respectively counterclockwise on each axle2/∑C、C3/∑C、nC4/ ∑ C value, wherein ∑ C=C1+C2+C3+nC4, C1、
C2、C3、nC4Respectively methane, ethane, propane, normal butane degree；Judged by the size and shape of observing triangle
The property of oil gas in reservoir.
2) triangle chart board method interpretation method
Triangle interpretation chart method explains according to following principle：
It is down del 1. it is equilateral triangle upward to observe triangular apex；Observe the triangle length of side and triangle
The length of side ratio of chart board is small triangle less than 25%, and 25%-75% is intermediate cam shape, is big triangle more than 100%.Positive three
Angular is gas-bearing formation, and del is oil reservoir.
2. observation triangle, which is big triangular representation gas, comes from dry gas or low oil-gas ratio reservoir；Small triangular representation gas
Body comes from layer of moisture or high oil-gas ratio oil reservoir.
3. M points fall shows there is production capacity in production capacity area, otherwise without production capacity.
3) triangle chart board method, which is expanded, uses
By using analytic geometry method, fine Mathematics Research has been carried out to gas logging hydrocarbon component triangle illustration
And parsing, just the falling of triangle, size can be no longer asked in a manner of mapping, being directly substituted into that following formula can obtain can table
Levy the index of properties of fluid in bearing stratum：
IT=1- (C2+C3+C4)/(0.2 ∑ C)
∑ C=C in formula1+C2+C3+iC4+nC4；
ITGeometry implication be the ratio of observation the triangle length of side and the Triangle Chart length of side.ITFor on the occasion of corresponding observation
Triangle is equilateral triangle, characterizes gas-bearing formation, and equilateral triangle more atmospheric mass dryness fraction is bigger；ITTriangle is correspondingly observed for negative value to be down
Triangle, oil reservoir is characterized, del is bigger, and oil is heavier；ITBe zero exactly point a triangle, characterize oil gas mixed phase.
0.75 ＜ ITIt is big equilateral triangle during ＜ 1
0.25 ＜ ITIt is middle equilateral triangle during ＜ 0.75
0 ＜ ITIt is small equilateral triangle during ＜ 0.25
- 0.25 ＜ ITIt is small del during ＜ 0
- 0.75 ＜ ITIt is middle del during ＜ -0.25
- 1 ＜ ITIt is big del during ＜ -0.75
ITIt is very big del during ＜ -1
4) triangle chart board method adaptability
The representative component data of display layer are traditionally chosen, is analyzed according to one point data, is done Triangle Chart, stored up
Laminar flow volume property is explained.Can not be continuously into figure.It is suitable for component to go out to nC4 data.To deep-seated oil gas reservoir or primary reservoir
Explain that effect is preferable；To the seriously biodegradable oil-gas reservoir of oil-gas reservoir, particularly shallow-layer after secondary transformation, explain that the rate of coincideing is poor.
Therefore, the creator of the present invention is engaged in the experience of relevant industries and practice by it for many years, and through concentrating on studies and
Exploitation, develop a kind of method that new gas based on gas measuring logging data surveys component ratio evaluation properties of fluid in bearing stratum.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of new gas based on gas measuring logging data and survey component ratio
The method for evaluating properties of fluid in bearing stratum, has done compared with major reform to original Triangle Chart method, has established new explanation map application
Form.The I of quantizationTnSerial index can survey parameter with other gas, or even log parameter is combined, and is flexibly used, for evaluation oil
Gas-bearing formation provides conveniently.
The purpose of the present invention is achieved through the following technical solutions.
A kind of method that component ratio evaluation properties of fluid in bearing stratum is surveyed using gas, is comprised the following steps：
1)ITnThe calculating of serial index
The methane C of gas detection logging detection1, ethane C2, propane C3, butane C4(positive isomers sum) and pentane C5(positive isomery
Body sum) hydro carbons parameter be the gaseous hydrocarbon component that measuring while drilling arrives content.The present invention defines and calculates set below index：
IT1=1- (C2)/(0.2·(C1+C2))
IT2=1- (C2+C3)/(0.2·(C1+C2+C3))
IT3=1- (C2+C3+C4)/(0.2·(C1+C2+C3+C4))
IT4=1- (C2+C3+C4+C5)/(0.2·(C1+C2+C3+C4+C5))
Application to Triangle Chart method is expanded, in the case where gas component is not complete, can Continuous plus can be anti-
The parameter for reflecting strata condition change provides method.
Gas is surveyed into component value and substitutes into above-mentioned equation, data, Continuous plus I are surveyed according to the gas gatheredTnNumerical value, it can correspond to
Well depth can clearly reflect the change of oil and gas property into figure in the vertical, while characterize the change of petroleum gas components, be easy to sentence
Fluid properties contained by disconnected reservoir.To judge that properties of fluid in bearing stratum provides a kind of new graphical method.
2)ITnSerial index chart interpretation application process
With I inT3Based on, IT1、IT2And IT4Supplemented by, comprehensive descision properties of fluid in bearing stratum.
Other logging parameters such as gas total hydrocarbon TG, I1, RT, IP1, I can be usedT1、IT2And IT4With ITnSerial index makes
Cross plot, the reservoir for the different different reservoir fluid properties of total score.
The data distribution of oil reservoir and gas-bearing formation is in a statistical regions, its scope：
For natural gas reservoir：
IT3＞ a, it is dry gas layer
In the range of this, IT3Bigger, the mass dryness fraction of gas reservoir is bigger.
B ＜ IT3＜ a, it is layer of moisture
For oil reservoir：IT3Bigger, gas-oil ratio is higher
C ＜ IT3＜ b, it is the same layer of oil gas,
D ＜ IT3＜ c, it is lightweight-middle matter oil reservoir
E ＜ IT3＜ d, it is heavy oil reservoir
IT3＜ e, it is viscous crude, secondary reservoir, the kerogen etc. of maturation.
Reference value, a=0.75, b=0.25, c=-0.25, d=-0.75, e=-1.25.But different petroleum geology environment
Lower oil-gas reservoir is widely different, and new exploratory area should make a concrete analysis of work area feature when applying, it is determined that numerical value of suitably demarcating.
In addition, having, the lighter hydrocarbons ratio performance of strong biodegradation inspissated pool is similar with gas reservoir, can not be only during evaluation
According to gas detection logging data, reference should also be made to use other analyze datas.
3)ITnExponent pair answers well depth to draw and explains map
According to ITnSerial index computational methods, Continuous plus ITnSeries of values, corresponding well plutonic figure, to judge reservoir stream
Volume property provides a kind of new graphical method.The change of oil gas water can clearly be reflected in the vertical, be easy to judge reservoir
Contained fluid properties.
Compared with prior art, the positive effect of the present invention is：Provide a kind of new based on gas measuring logging data
Gas Ratio properties of fluid in bearing stratum means of interpretation, original Triangle Chart method is done compared with major reform, has established new explanation figure
Part application form.The I of quantizationTnSerial index can survey parameter with other gas, or even log parameter is combined, flexibly uses, be
Evaluation oil-gas Layer provides conveniently.
Brief description of the drawings
Fig. 1 is gas total hydrocarbon TG and IT3Cross plot.
Fig. 2 is Gas Ratio I1 and IT3Cross plot.
Fig. 3 is the deep resistivity RT and I that logs wellT3Cross plot.
Fig. 4 is gas evaluation parameter IP1 and IT3Cross plot.
Fig. 5 is the I of dry gas layer, layer of moisture and oil gas with layerTnSerial curve feature.
Fig. 6 is the I of middle matter oil, mink cell focus, water to oil area and water layerTnSerial curve feature.
Fig. 7 is gas reservoir gas-water interface ITnThe performance of serial index curve.
Fig. 8 is light oil reservoirs oil-water interfaces ITnThe performance of serial index curve.
Embodiment
Method provided by the present invention is further illustrated below in conjunction with the accompanying drawings, but the present invention is not therefore and by any limit
System.
A kind of method that component ratio evaluation properties of fluid in bearing stratum is surveyed using gas, is comprised the following steps：
1)ITnThe calculating of serial index
The methane C of gas detection logging detection1, ethane C2, propane C3, butane C4(positive isomers sum) and pentane C5(positive isomery
Body sum) hydro carbons parameter be the gaseous hydrocarbon component that measuring while drilling arrives content.The present invention defines and calculates set below index：
IT1=1- (C2)/(0.2·(C1+C2))
IT2=1- (C2+C3)/(0.2·(C1+C2+C3))
IT3=1- (C2+C3+C4)/(0.2·(C1+C2+C3+C4))
IT4=1- (C2+C3+C4+C5)/(0.2·(C1+C2+C3+C4+C5))
Gas is surveyed into component value and substitutes into above-mentioned equation, data, Continuous plus I are surveyed according to the gas gatheredTnNumerical value, it can correspond to
Well depth can clearly reflect the change of oil and gas property into figure in the vertical, while characterize the change of petroleum gas components, be easy to sentence
Fluid properties contained by disconnected reservoir.To judge that properties of fluid in bearing stratum provides a kind of new graphical method.
2)ITnSerial index chart interpretation application process
With I inT3Based on, IT1、IT2And IT4Supplemented by, comprehensive descision properties of fluid in bearing stratum.
Other logging parameters such as gas total hydrocarbon TG, I1, RT, IP1, I can be usedT1、IT2And IT4With IT3Serial index system
Make cross plot, the reservoir for the different different reservoir fluid properties of total score.As shown in figure 1, according to gas total hydrocarbon TG and IT3Intersection
The situation of change of figure, it is easy to be compared different layers position properties of fluid in bearing stratum；As shown in Fig. 2 according to Gas Ratio I1 and IT3
The situation of change of cross plot, it can also be used to judge properties of fluid in bearing stratum, wherein：I1=C1/ (C1+C2+C3+C4+C5)；Such as Fig. 3
It is shown, according to the deep resistivity RT and I that logs wellT3The situation of change of cross plot, it can also be used to judge properties of fluid in bearing stratum；Such as Fig. 4 institutes
Show, according to gas evaluation parameter IP1 and IT3The situation of change of cross plot, it can also be used to judge properties of fluid in bearing stratum, wherein：IP1
=(C1/C4)-(C1/C3).
By Fig. 1-4, it can be seen that the data distribution of oil reservoir and gas-bearing formation is in a statistical regions, its scope：
For natural gas reservoir：
IT3＞ 0.75, it is dry gas layer
In the range of this, IT3Bigger, the mass dryness fraction of gas reservoir is bigger.
0.25 ＜ IT3＜ 0.75, it is layer of moisture
For oil reservoir：IT3Bigger, gas-oil ratio is higher
- 0.25 ＜ IT3＜ 0.25, it is the same layer of oil gas,
- 0.75 ＜ IT3＜ -0.25, it is lightweight-middle matter oil reservoir
- 1.25 ＜ IT3＜ -0.75, it is heavy oil reservoir
IT3＜ -1.25, it is viscous crude, secondary reservoir, the kerogen etc. of maturation.
But oil-gas reservoir is widely different under different petroleum geology environment, new exploratory area should make a concrete analysis of work area feature when applying, really
Fixed suitable boundary numerical value.
In addition, having, the lighter hydrocarbons ratio performance of strong biodegradation inspissated pool is similar with gas reservoir, can not be only during evaluation
According to gas detection logging data, reference should also be made to use other analyze datas.
3)ITnExponent pair answers well depth to draw and explains map
According to ITnSerial index computational methods, Continuous plus ITnSeries of values, corresponding well plutonic figure, to judge reservoir stream
Volume property provides a kind of new graphical method.The change of oil gas water can clearly be reflected in the vertical, be easy to judge reservoir
Contained fluid properties.
Original gas, which surveys parameter, includes TG, C1、C2、C3、iC4、nC4、iC5And nC5.Fig. 5 and Fig. 6, all it is ITnSerial index is sentenced
The example of disconnected properties of fluid in bearing stratum, it can be seen that dry gas layer, layer of moisture, the I of light oil bed and heavy oil tested layerTnSeries
Difference in terms of index is obvious, uses ITnThe gas that serial index can differentiate different reservoir fluid properties surveys display, reasonable dismissal
Properties of fluid in bearing stratum.
In addition, oil-gas reservoir of different nature, ITnThe feature of serial index curve has larger difference, such as：Gas reservoir is in air water
The performance at interface is as shown in fig. 7, light oil reservoirs are as shown in Figure 8 in the performance of oil-water interfaces.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to the model of the present invention
Enclose and be defined, under the premise of design spirit of the present invention is not departed from, this area ordinary skill technical staff is to the technology of the present invention side
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (4)
1. a kind of method that component ratio evaluation properties of fluid in bearing stratum is surveyed using gas, including：
1)ITnThe calculating of serial index：
The methane C detected according to gas detection logging1, ethane C2, propane C3, butane C4With pentane C5The constituent content of hydro carbons parameter, institute
State butane C4For positive isomers sum, pentane C5For positive isomers sum, define and calculate set below ITnSerial index：
IT1=1- (C2)/(0.2·(C1+C2))
IT2=1- (C2+C3)/(0.2·(C1+C2+C3))
IT3=1- (C2+C3+C4)/(0.2·(C1+C2+C3+C4))
IT4=1- (C2+C3+C4+C5)/(0.2·(C1+C2+C3+C4+C5))；
2)ITnSerial index chart interpretation application process
With I inTnI in serial indexT3Based on, IT1、IT2And IT4Supplemented by, using other logging parameters respectively with ITnSystem
A certain index in column index makes cross plot, the reservoir of the different different reservoir fluid properties of total score；Other logging parameters
For gas total hydrocarbon TG, Gas Ratio I1, the deep resistivity RT of well logging, gas evaluation parameter IP1, IT1、IT2And IT4, wherein I1=C1/
(C1+C2+C3+C4+C5), IP1=(C1/C4)-(C1/C3)；According to gas total hydrocarbon TG and IT3The situation of change of cross plot, to not
It is compared with layer position properties of fluid in bearing stratum；According to Gas Ratio I1 and IT3The situation of change of cross plot, for judging reservoir stream
Volume property；According to the deep resistivity RT and I that logs wellT3The situation of change of cross plot, for judging properties of fluid in bearing stratum；Commented according to gas
Valency parameter IP1 and IT3The situation of change of cross plot, for judging properties of fluid in bearing stratum；
3)ITnSerial index corresponds to well depth and draws explanation map
According to ITnSerial index accounting equation, Continuous plus ITnSeries of values, corresponding well plutonic figure, reflect oil gas water in the vertical
Change, judge the fluid properties contained by reservoir.
2. according to the method for claim 1, it is characterised in that：The step 2）Middle ITnA certain index in serial index is
IT3。
3. according to the method for claim 1, it is characterised in that：ITnSerial index chart interpretation application extension is：
For natural gas reservoir：
IT3＞ a, it is dry gas layer；
In the range of this, IT3Bigger, the mass dryness fraction of gas reservoir is bigger；
B ＜ IT3＜ a, it is layer of moisture；
For oil reservoir：IT3Bigger, gas-oil ratio is higher；
C ＜ IT3＜ b, it is the same layer of oil gas；
D ＜ IT3＜ c, it is lightweight-middle matter oil reservoir；
E ＜ IT3＜ d, it is heavy oil reservoir；
IT3＜ e, it is viscous crude, secondary reservoir, the kerogen of maturation.
4. according to the method for claim 3, it is characterised in that：Wherein, parameter a=0.75, b=0.25, c=-0.25, d
=-0.75, e=-1.25.
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| CN106437691B (en) * | 2016-08-05 | 2019-11-26 | 中国石油集团长城钻探工程有限公司录井公司 | A kind of low gas-oil ratio oil reservoir gas survey evaluation method |
| CN108798657B (en) * | 2018-05-31 | 2021-07-23 | 中国石油集团川庆钻探工程有限公司 | Logging interpretation method based on drilling fluid logging parameter gas measurement value |
| CN108894778B (en) * | 2018-07-20 | 2022-04-26 | 中国海洋石油集团有限公司 | Method for identifying fluid properties of oil-gas reservoir by using gas logging information |
| CN109001355B (en) * | 2018-08-16 | 2020-09-15 | 中海石油（中国）有限公司天津分公司 | Logging oil gas interpretation and discrimination method based on thermal evaporation hydrocarbon gas chromatography |
| CN109403958B (en) * | 2018-08-31 | 2021-10-22 | 中国石油集团川庆钻探工程有限公司 | Method for identifying formation fluid properties by using gas logging power spectrum equivalent index |
| CN109577974A (en) * | 2018-11-14 | 2019-04-05 | 中国石油集团长城钻探工程有限公司 | The method that gas surveys component PID serial index evaluation oil and gas reservoir fluid properties |
| CN109736792B (en) * | 2019-01-07 | 2022-09-06 | 中国石油集团川庆钻探工程有限公司 | Natural gas reservoir and automatic identification method of fluid-containing property thereof |
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| CN110486010B (en) * | 2019-09-10 | 2022-10-18 | 中国海洋石油集团有限公司 | Reservoir oil-gas content quantitative evaluation method based on gas logging parameters |
| CN113203658B (en) * | 2021-04-30 | 2023-08-29 | 中海石油(中国)有限公司上海分公司 | Reservoir fluid density prediction method |
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| 对气测录井烃组分三角形图解法的研究;何宏等;《天津理工学院学报》;20040630;第20卷(第2期);第30-33页 * |
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