CN106555587A - A kind of gas surveys the difference profit recognition methods of hydrocarbon component longitudinal direction - Google Patents
A kind of gas surveys the difference profit recognition methods of hydrocarbon component longitudinal direction Download PDFInfo
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- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 32
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 32
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 238000011156 evaluation Methods 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 2
- 230000002269 spontaneous effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000007704 transition 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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Abstract
The invention belongs to hydrocarbon zone interpretation assessment technique field, discloses a kind of gas and surveys the difference profit recognition methods of hydrocarbon component longitudinal direction.Which is mainly characterized in that：The numerical value change image conversion surveyed on hydrocarbon component longitudinal direction by gas, differentiates the situation of change for explaining layer fluid according to the repeatability of corresponding sides, flex point.Present invention efficiently solves during oil-water coexistence accurate evaluation a difficult problem, improve the gas reservoir prediction accuracy rate of oil water relation complicated reservoirs, be conducive to gas logging technology ground popularization and application, be also beneficial to reduce formation testing select layer difficulty, improve operation efficiency.
Description
Technical field
The invention belongs to hydrocarbon zone interpretation assessment technique field.
Background technology
At present, gas detection logging hydrocarbon zone interpretation evaluates Main Basiss total hydrocarbon show value height, tracing pattern and hydrocarbon component structure
Into especially hydrocarbon component is constituted and plays decisive role, general to choose one group of representational C in interpretation layer1、C2、C3、C4(iC4
+nC4)、C5(iC5+nC5) data, their relative percentage is calculated respectively, then with region oil reservoir, that water layer data are carried out is right
Than finally concluding to interpretation layer fluid properties.The method is easy, practical, and quickly interpretation layer can be judged, universal
Using.Why only choose representational data to go to compare with regional standard, be, risk big with petroleum geology exploration input
It is high, do not miss oil-gas Layer and have much relations, only paid attention to favourable information, ignored unfavorable factor, so, it is often higher to recognize
Know.
This " fanning out from point to area " evaluation method has very high discrimination to the oil reservoir of single fluid, water layer, but for profit
The layer for coexisting unsuitable for.When reservoir oil-water coexistence, due to gravitational differentiation, oil in upper water under, hydrocarbon component C1、C2、
C3、C4(iC4+nC4)、C5(iC5+nC5) solubility in You Heshui is different, their composition has difference in the vertical
It is different, therefore, only it is difficult to reflect the situation of change of whole reservoir with one group of hydrocarbon component data, it is necessary to longitudinal direction can be showed using one kind
The method of upper each component variation characteristic, effectively could be identified to profit.
The content of the invention
The technical problem to be solved is to provide a kind of explanation evaluating method for being suitable for recognizing oil-water common-layer, carries
High gas reservoir prediction coincidence rate, widens the scope of application of gas survey technology, selects layer to provide reliable support for formation testing.
To solve above-mentioned technical problem, the technical solution used in the present invention is comprised the following steps：
The first step determines interpretation layer according to data such as gas detection logging, conventional loggings；
1., according to petrochina company standard and each oil field data to arrange specification, meet one of following condition and be defined as oil gas
Interpretation layer；
(1) total hydrocarbon in gas logging show value is higher than 2 times of base value；
(2) sieve residue log is shown in that fluorescence or fluorescence above rank show；
2. interpretation layer well section is determined；
(1) by the high turning point for reducing as interpretation layer initial depth when to bore, by low elevated turning point as solution during boring
Release layer and terminate depth；
(2) the start-stop well depth that shows with reference to total hydrocarbon in gas logging, landwaste are containing well section and well logging spontaneous potential curve etc. to explaining
Layer start-stop depth is finely tuned；
Second step calculates the C of each measurement point in interpretation layer from top to bottom1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5) relative
Percentage composition；
1. each measurement point hydrocarbon total amount, hydrocarbon total amount=C are calculated1+C2+C3+iC4+nC4+iC5+nC5；
2. calculate each component percentage contents, certain component percentage contents=certain constituent content/hydrocarbon total amount ×
100%；
3. gas reservoir prediction tables of data is set up；
3rd step is drawn the radar map of each measurement point and carries out longitudinal superposition；
1. with C1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5) radar map of each measurement point is drawn for coordinate, obtain five sides
Figure；
2. from top to bottom the radar graphic of each measurement point is overlapped；
4th step is according to each side, each flex point coincidence situation or the deformation identification interpretation layer fluidity for being superimposed radar map
Matter；
If 1. be superimposed after each side of radar map, each flex point highly overlap, interpretation layer based on a kind of fluid, reference zone
Evaluation criterion may be interpreted as oil reservoir；
If 2. be superimposed after each side of radar map, each flex point repeatability it is poor, interpretation layer based on two kinds of fluids, reference area
Domain evaluation criterion may be interpreted as oil-water common-layer；
3. the measurement point that radar map side, flex point occur changing first is oil-water interfaces.
Further, used in the 3rd step, office-EXCEL office softwares draw radar map.
It is an advantage of the invention that：A kind of gas provided by the present invention surveys the difference profit recognition methods of hydrocarbon component longitudinal direction, effectively
Solve the deficiency of " fanning out from point to area " means of interpretation, improve the gas reservoir prediction accuracy rate of oil water relation complicated reservoirs, reduce
Layer difficulty is selected in formation testing, is conducive to preferably playing the effect of gas survey technology, is also beneficial to improve the success rate of formation testing and effect of going into operation
Rate.
Description of the drawings
Fig. 1 is oil reservoir and oil-water common-layer logging parameters indicatrix schematic diagram for interpretation layer.
Specific embodiment
Below in conjunction with the accompanying drawings a kind of gas of the 1 couple of present invention survey the difference profit recognition methods of hydrocarbon component longitudinal direction operation principle do into
One step is described in detail.Implementation process comprises the steps：
The first step is surveyed according to gas and sees that obvious abnormal, sieve residue log is shown in that oil mark such as shows at log data display feature, the contrast district
The domain interpretation layer criteria for classifying, identifies 1,2 totally two interpretation layers in well section 2480-2525m.
Second step interpretation layer 1, well section 2479-2484m, thickness 5m, total hydrocarbon show value are reached as shown in Fig. 13
8.892%；Hydrocarbon component is shown in C1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5), as shown in Fig. 15,7,9,11,13；Sieve residue log
As shown in Fig. 1 15, it is oil mark packsand.The hydrocarbon component longitudinal direction differential chart of interpretation layer 1 as shown in Fig. 1 17, five sides, five
Flex point registration is higher, shows that 1 fluid changing characteristic of interpretation layer is not obvious.Concrete data see the table below.
Further explanation layer 2, well section 2519-2525m, thickness 6m, total hydrocarbon show value are reached as shown in Fig. 14
7.583%；Hydrocarbon component is shown in C1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5), as shown in Fig. 16,8,10,12,14；Landwaste is recorded
Well, as shown in Fig. 1 16, is oil mark packsand.Interpretation layer 2 hydrocarbon component longitudinal direction differential chart as shown in Fig. 1 18, measurement point
Tri- sides of 2520m, 2521m, 2522m, three flex point registrations are higher, show that the change of fluid of these three measurement points is not obvious；
Start C from measurement point 2523m2、C3、C5(iC5+nC5) flex point changes, figure repeatability is deteriorated, measurement point 2524m, 2525m
Flex point change becomes apparent from, and figure repeatability is further deteriorated, and shows that fluid properties are different from first three measurement point.Concrete data
See the table below.
3rd step combines offset well formation testing layer comparative analysis according to regional evaluation standard, and interpretation layer 1 is evaluated as oil reservoir, interpretation layer
2 are evaluated as oil-water common-layer, profit transition points of the 2523m for interpretation layer 2.
4th step interpretation layer is verified
1. interpretation layer 1, explains well section 2479-2484m, and gas reservoir prediction is oil reservoir；Formation testing well section 2480.2-2483.8m, takes out
Draw, day oil-producing 25,6m3, oil production is more than 2000-3000m well sections 3m3Optimization for industry, formation testing result are oil reservoir, are surveyed with gas
Explain that conclusion is coincide.
2. interpretation layer 2, explain well section 2519-2525m, and gas reservoir prediction is oil-water common-layer；Formation testing well section 2518.6-
2524.8m, pumping, day oil-producing 16.5m3, produce water 13.8m daily3, moisture content is 45.54%, and oil production is more than 2000-3000m wells
Section 3m3Optimization for industry, moisture content oil-water common-layer define it is aqueous in the range of 20%-80%, formation testing result is
Oil-water common-layer, is coincide with gas reservoir prediction conclusion.
Above one embodiment of the invention is described in detail, but the content has been only the invention
Preferred embodiment, it is impossible to be considered as limiting the practical range of the invention.It is all to be made according to the invention application range
Impartial change with improve etc., still all should belong within the patent covering scope of the invention.
Claims (2)
1. a kind of gas surveys the difference profit recognition methods of hydrocarbon component longitudinal direction, it is characterised in that the method is comprised the following steps：
The first step determines interpretation layer according to data such as gas detection logging, conventional loggings；
1., according to petrochina company standard and each oil field data to arrange specification, meet one of following condition and be defined as oil gas explanation
Layer；
(1) total hydrocarbon in gas logging show value is higher than 2 times of base value；
(2) sieve residue log is shown in that fluorescence or fluorescence above rank show；
2. interpretation layer well section is determined；
(1) by the high turning point for reducing as interpretation layer initial depth when to bore, by low elevated turning point as interpretation layer during boring
Terminate depth；
(2) the start-stop well depth that shows with reference to total hydrocarbon in gas logging, landwaste are risen to interpretation layer containing well section and well logging spontaneous potential curve etc.
Only depth is finely tuned；
Second step calculates the C of each measurement point in interpretation layer from top to bottom1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5) relative hundred
Divide content；
1. each measurement point hydrocarbon total amount, hydrocarbon total amount=C are calculated1+C2+C3+iC4+nC4+iC5+nC5；
2. each component percentage contents, certain component percentage contents=certain constituent content/hydrocarbon total amount × 100% are calculated；
3. gas reservoir prediction tables of data is set up；
3rd step is drawn the radar map of each measurement point and carries out longitudinal superposition；
1. with C1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5) radar map of each measurement point is drawn for coordinate, obtain five edge graph shapes；
2. from top to bottom the radar graphic of each measurement point is overlapped；
4th step is according to each side, each flex point coincidence situation or the deformation identification interpretation layer fluid properties for being superimposed radar map；
If 1. be superimposed after each side of radar map, each flex point highly overlap, interpretation layer based on a kind of fluid, reference zone evaluation
Standard may be interpreted as oil reservoir；
2., if each side of radar map, each flex point repeatability after being superimposed are poor, interpretation layer based on two kinds of fluids, comment by reference zone
Price card will definitely be construed to oil-water common-layer；
3. the measurement point that radar map side, flex point occur changing first is oil-water interfaces.
2. a kind of gas according to claim 1 surveys the difference profit recognition methods of hydrocarbon component longitudinal direction, it is characterised in that described the
Used in three steps, office-EXCEL office softwares draw radar map.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107448195A (en) * | 2017-06-15 | 2017-12-08 | 中海石油(中国)有限公司上海分公司 | Identify the method and application of light oil bed and Condensate Gas Reservoir in stratum |
| CN108089235A (en) * | 2017-11-27 | 2018-05-29 | 中国石油天然气股份有限公司 | A kind of Migration Characteristics of Oil And Gas recognition methods and device |
| CN108798661A (en) * | 2018-06-11 | 2018-11-13 | 中国石油集团川庆钻探工程有限公司 | Component parameter identification oil reservoir is surveyed using well logging gas and containing the method for fluid properties |
| CN108894778A (en) * | 2018-07-20 | 2018-11-27 | 中国海洋石油集团有限公司 | A method of utilizing gas measuring logging data identification of hydrocarbon laminar flow volume property |
| CN109441439A (en) * | 2018-10-24 | 2019-03-08 | 中国石油集团渤海钻探工程有限公司 | A kind of carbonate oil and gas value well section effective reservoir index recognition methods |
| CN110159263A (en) * | 2019-05-30 | 2019-08-23 | 中国石油集团川庆钻探工程有限公司 | Well logging gas surveys the method that component frequency spectrum overlapping backward index determines properties of fluid in bearing stratum |
| CN112049628A (en) * | 2020-10-20 | 2020-12-08 | 中国石油集团渤海钻探工程有限公司 | Method for judging and identifying oil-water interface of buried hill by using water content index |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107448195A (en) * | 2017-06-15 | 2017-12-08 | 中海石油(中国)有限公司上海分公司 | Identify the method and application of light oil bed and Condensate Gas Reservoir in stratum |
| CN107448195B (en) * | 2017-06-15 | 2020-05-29 | 中海石油(中国)有限公司上海分公司 | Method for identifying light oil layer and condensate gas layer in stratum and application |
| CN108089235A (en) * | 2017-11-27 | 2018-05-29 | 中国石油天然气股份有限公司 | A kind of Migration Characteristics of Oil And Gas recognition methods and device |
| CN108798661A (en) * | 2018-06-11 | 2018-11-13 | 中国石油集团川庆钻探工程有限公司 | Component parameter identification oil reservoir is surveyed using well logging gas and containing the method for fluid properties |
| CN108894778A (en) * | 2018-07-20 | 2018-11-27 | 中国海洋石油集团有限公司 | A method of utilizing gas measuring logging data identification of hydrocarbon laminar flow volume property |
| CN109441439A (en) * | 2018-10-24 | 2019-03-08 | 中国石油集团渤海钻探工程有限公司 | A kind of carbonate oil and gas value well section effective reservoir index recognition methods |
| CN110159263A (en) * | 2019-05-30 | 2019-08-23 | 中国石油集团川庆钻探工程有限公司 | Well logging gas surveys the method that component frequency spectrum overlapping backward index determines properties of fluid in bearing stratum |
| CN110159263B (en) * | 2019-05-30 | 2022-09-02 | 中国石油集团川庆钻探工程有限公司 | Method for judging reservoir fluid properties by logging gas logging component spectrum superposition reverse order index |
| CN112049628A (en) * | 2020-10-20 | 2020-12-08 | 中国石油集团渤海钻探工程有限公司 | Method for judging and identifying oil-water interface of buried hill by using water content index |
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Effective date of registration: 20211011 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: No.106 Huanghai Road, Binhai New Economic and Technological Development Zone, Tianjin 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |