CN106555587B - A kind of gas survey the hydrocarbon component longitudinal direction difference grease recognition methods - Google Patents
A kind of gas survey the hydrocarbon component longitudinal direction difference grease recognition methods Download PDFInfo
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- CN106555587B CN106555587B CN201611045535.6A CN201611045535A CN106555587B CN 106555587 B CN106555587 B CN 106555587B CN 201611045535 A CN201611045535 A CN 201611045535A CN 106555587 B CN106555587 B CN 106555587B
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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 15
- 239000004519 grease Substances 0.000 title claims abstract description 10
- 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 7
- 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 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 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
- 238000005457 optimization Methods 0.000 description 2
- 241001269238 Data Species 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
- 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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- 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)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention belongs to hydrocarbon zone interpretation assessment technique fields, disclose a kind of gas survey the hydrocarbon component longitudinal direction difference grease recognition methods.It, which is mainly characterized in that, surveys the longitudinal numerical value change image conversion of the hydrocarbon component gas, and the situation of change for explaining layer fluid is differentiated according to corresponding sides, the repeatability of inflection point.Present invention efficiently solves the problems of accurate evaluation when oil-water coexistence, improve the gas reservoir prediction accuracy rate of oil water relation complicated reservoirs, promote and apply with being conducive to gas logging technology, and being also beneficial to, which reduces formation testing, selects layer difficulty, improve operation efficiency.
Description
Technical field
The invention belongs to hydrocarbon zone interpretation assessment technique fields.
Background technique
Currently, the evaluation of gas detection logging hydrocarbon zone interpretation is mainly according to total hydrocarbon show value height, tracing pattern and the hydrocarbon component structure
At especially the hydrocarbon component composition 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 separately out, is then carried out with region oil reservoir, water layer data pair
Than finally concluding to interpretation layer fluid properties.This method is easy, practical, can quickly judge to interpretation layer, universal
Using.Why only choose representational data to go to compare with regional standard, is to put into big, risk with petroleum geology exploration
It is high, do not miss oil-gas Layer and have much relations, only paid attention to advantageous 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 oil reservoir, the water layer of single fluid, but for grease
The layer coexisted is unsuitable.When reservoir oil-water coexistence, due to gravitational differentiation, oil in upper water under, the hydrocarbon component C1、C2、
C3、C4(iC4+nC4)、C5(iC5+nC5) solubility in You Heshui is different, there is differences in the longitudinal direction for their composition
It is different, therefore, only it is difficult to reflect the situation of change of entire reservoir with one group of the hydrocarbon component data, it is necessary to longitudinal direction can be showed using one kind
The method of upper each component variation characteristic, could effectively identify grease.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of explanation evaluating methods for being suitable for identifying oil-water common-layer, mention
High gas reservoir prediction coincidence rate, widens the scope of application of gas survey technology, selects layer to provide reliable support for formation testing.
In order to solve the above technical problems, the technical solution adopted by the present invention the following steps are included:
The first step determines interpretation layer according to gas detection logging, conventional logging data；
(1) oil play standard and each oil field data to arrange specification according in, meet one of following condition and are determined as oil
Gas interpretation layer；
I) total hydrocarbon in gas logging show value is higher than 2 times of base value；
Ii) sieve residue log is shown in that the above rank of fluorescence is shown；
(2) interpretation layer well section is determined；
When i) to bore by height reduce turning point as interpretation layer initial depth, when boring by low raised turning point be explanation
Layer terminates depth；
Ii start-stop well depth, the landwaste for) total hydrocarbon in gas logging being combined to show contain well section and well logging spontaneous potential curve to interpretation 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) opposite
Percentage composition；
(1) each measurement point hydrocarbon total amount, hydrocarbon total amount=C are calculated1+C2+C3+iC4+nC4+iC5+nC5；
(2) calculating each component percentage contents, certain component percentage contents=certain constituent content/hydrocarbon total amount ×
100%；
(3) gas reservoir prediction tables of data is established；
Third step draws the radar map of each measurement point and carries out longitudinal superposition；
(1) with C1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5) it is the radar map that coordinate draws each measurement point, obtain five sides
Figure；
(2) from top to bottom the radar graphic of each measurement point is overlapped；
4th step is overlapped situation according to each side of superposition radar map, each inflection point or deformation identifies interpretation layer fluidity
Matter；
(1) if each side of superimposed radar map, each inflection point height are overlapped, interpretation layer is based on a kind of fluid, reference area
Domain evaluation criterion may be interpreted as oil reservoir；
(2) if each side of superimposed radar map, each inflection point repeatability are poor, interpretation layer is based on two kinds of fluids, reference
Regional evaluation standard may be interpreted as oil-water common-layer；
(3) radar map side, inflection point first appear the measurement point of variation as oil-water interfaces.
Further, radar map is drawn using office-EXCEL office software in the third step.
The invention has the advantages that a kind of gas provided by the present invention surveys the grease recognition methods of the hydrocarbon component longitudinal direction difference, effectively
Ground solves the deficiency of " fanning out from point to area " means of interpretation, improves the gas reservoir prediction accuracy rate of oil water relation complicated reservoirs, reduces
Layer difficulty is selected in formation testing, is conducive to preferably play the effect of gas survey technology, is also beneficial to improve the success rate of formation testing and effect of going into operation
Rate.
Detailed description of the invention
Fig. 1 is that interpretation layer is oil reservoir and oil-water common-layer logging parameters indicatrix schematic diagram.
Specific embodiment
The working principle that a kind of gas of 1 couple of present invention surveys the grease recognition methods of the hydrocarbon component longitudinal direction difference with reference to the accompanying drawing do into
One step is described in detail.Implementation process includes the following steps:
The first step is shown in that obvious exception, sieve residue log are shown in that oil mark such as show at log datas display feature, the contrast district according to gas survey
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 shown in 3, reach as shown in figure 1
8.892%；The hydrocarbon component is shown in C1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5), as shown in figure 1 shown in 5,7,9,11,13；Sieve residue log
It is oil mark packsand as shown in figure 1 shown in 15.The hydrocarbon component longitudinal direction differential chart of interpretation layer 1 is as shown in figure 1 shown in 17, five sides, five
Inflection point registration is higher, shows that 1 fluid changing characteristic of interpretation layer is unobvious.Specific data see the table below.
Further explanation layer 2, well section 2519-2525m, thickness 6m, total hydrocarbon show value shown in 4, reach as shown in figure 1
7.583%；The hydrocarbon component is shown in C1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5), as shown in figure 1 shown in 6,8,10,12,14；Landwaste record
Well is as shown in figure 1 oil mark packsand shown in 16.The hydrocarbon component longitudinal direction differential chart of interpretation layer 2 is as shown in figure 1 shown in 18, measurement point
Tri- sides 2520m, 2521m, 2522m, three inflection point registrations are higher, show that the change of fluid of these three measurement points is unobvious；
The C since measurement point 2523m2、C3、C5(iC5+nC5) inflection point changes, figure repeatability is deteriorated, measurement point 2524m, 2525m
Inflection point variation is more obvious, and figure repeatability is further deteriorated, and shows that fluid properties are different from first three measurement point.Specific data
It see the table below.
Third step is evaluated as oil reservoir, interpretation layer according to the formation testing layer comparative analysis of regional evaluation standard combination offset well, interpretation layer 1
2 are evaluated as oil-water common-layer, and 2523m is the grease transition point of interpretation layer 2.
The verifying of 4th step interpretation layer
1. interpretation layer 1 explains well section 2479-2484m, 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 greater than 2000-3000m well section 3m3Optimization for industry, formation testing result are oil reservoir, are surveyed with gas
Explain that conclusion is coincide.
2. interpretation layer 2 explains well section 2519-2525m, 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 45.54%, oil production is greater than 2000-3000m well
Section 3m3Optimization for industry, moisture content defines aqueous in the range of 20%-80% in oil-water common-layer, and formation testing result is
Oil-water common-layer coincide with gas reservoir prediction conclusion.
Above an embodiment of the invention is described in detail, but the content is only the invention
Preferred embodiment should not be considered as limiting the invention the practical range of creation.It is all to be made according to the invention application range
All the changes and improvements etc., shall remain within the patent scope covered by the invention.
Claims (2)
1. a kind of gas surveys the grease recognition methods of the hydrocarbon component longitudinal direction difference, which is characterized in that method includes the following steps:
The first step determines interpretation layer according to gas detection logging, conventional logging data；
(1) oil play standard and each oil field data to arrange specification according in, meet one of following condition and are determined as oil gas solution
Release layer；
I) total hydrocarbon in gas logging show value is higher than 2 times of base value；
Ii) sieve residue log is shown in that the above rank of fluorescence is shown；
(2) interpretation layer well section is determined；
The turning point reduced when i) to bore by height is interpretation layer initial depth, by low raised turning point as interpretation layer end when boring
Only depth；
Ii start-stop well depth, the landwaste for) total hydrocarbon in gas logging being combined to show contain well section and well logging spontaneous potential curve to interpretation 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) percentage
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 established；
Third step draws the radar map of each measurement point and carries out longitudinal superposition；
(1) with C1、C2、C3、C4(iC4+nC4)、C5(iC5+nC5) it is the radar map that coordinate draws each measurement point, obtain five edge graphs
Shape；
(2) from top to bottom the radar graphic of each measurement point is overlapped；
4th step is overlapped situation according to each side of superposition radar map, each inflection point or deformation identifies interpretation layer fluid properties；
(1) if each side of superimposed radar map, each inflection point height are overlapped, interpretation layer based on a kind of fluid, comment by reference zone
Price card will definitely be construed to oil reservoir；
(2) if each side of superimposed radar map, each inflection point repeatability are poor, interpretation layer is based on two kinds of fluids, reference zone
Evaluation criterion may be interpreted as oil-water common-layer；
(3) radar map side, inflection point first appear the measurement point of variation as oil-water interfaces.
2. a kind of gas according to claim 1 surveys the grease recognition methods of the hydrocarbon component longitudinal direction difference, which is characterized in that described the
Radar map is drawn using office-EXCEL office software in three steps.
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| 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 |
| CN108089235B (en) * | 2017-11-27 | 2019-11-08 | 中国石油天然气股份有限公司 | Oil and gas migration characteristic identification method and device |
| CN108798661B (en) * | 2018-06-11 | 2021-07-23 | 中国石油集团川庆钻探工程有限公司 | Method for identifying oil well reservoir and fluid-containing property by using logging gas logging component parameters |
| 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 |
| 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 |
| 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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