CN105370273A - Method for correcting carbon-oxygen ratio logging environment influencing factors - Google Patents
Method for correcting carbon-oxygen ratio logging environment influencing factors Download PDFInfo
- Publication number
- CN105370273A CN105370273A CN201510905675.5A CN201510905675A CN105370273A CN 105370273 A CN105370273 A CN 105370273A CN 201510905675 A CN201510905675 A CN 201510905675A CN 105370273 A CN105370273 A CN 105370273A
- Authority
- CN
- China
- Prior art keywords
- gravel pack
- annular fluid
- value
- layer
- carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 42
- CSJDCSCTVDEHRN-UHFFFAOYSA-N methane;molecular oxygen Chemical compound C.O=O CSJDCSCTVDEHRN-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 41
- 238000000342 Monte Carlo simulation Methods 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 239000001301 oxygen Substances 0.000 claims description 20
- 238000012937 correction Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 1
- 238000012886 linear function Methods 0.000 abstract 1
- 239000003550 marker Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000005211 surface analysis Methods 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 238000013459 approach Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 2
- 241000720974 Protium Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000008398 formation water Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910004762 CaSiO Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- -1 sleeve pipe Substances 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- 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)
- Geophysics And Detection Of Objects (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses a method for correcting carbon-oxygen ratio logging environment influencing factors. A Monte-Carlo method is utilized for simulating a theory relation plate between the influencing factors and a measurement value, based on the theory plate, a marker bed method is used for selecting C/O values of influenced positions and C/O values of uninfluenced positions, and a trend-surface analysis fitting method is used for carrying out linear function fitting on the influenced C/O values and the uninfluenced C/O values to obtain a fitting relation expression between the influenced C/O values and the uninfluenced C/O values. According to the method, the two influencing factors of annular fluid and gravel filling can be corrected, the method is utilized for remarkably improving the reliability of logging response values of the influenced positions, then precision for explaining and evaluating remaining oil saturation through carbon-oxygen ratio logging is improved, and the method is high in universality.
Description
Technical field
The present invention relates to a kind of logging evaluation technology improving carbon-to-oxygen ratio calculating remaining oil saturation Explanation Accuracy, the bearing calibration of specifically annular fluid and gravel pack impact in a kind of carbon/oxygen log process, belongs to oil-gas exploration technical field.
Background technology
Carbon/oxygen log is also carbon-to-oxygen ratio spectrum logging, is a kind of novel pulsed neutron log method.Main carbon elements and protium in oil, main containing oxygen element and protium in water, carbon oxygen relative amount ratio in stratum can be obtained by carbon/oxygen log, the oil-gas Layer of omitting can be found in the well descending sleeve pipe, in the oil well recovered the oil, determine the residual saturation etc. of oil reservoir.
Calculate in remaining oil saturation process in carbon/oxygen log, need logging technique personnel to carry out impact to the C/O curve measured and correct, thus obtain the curve that can reflect stratum real information, the key of work is the bearing calibration determining influence factor.Influence factor main in carbon/oxygen log process comprises sleeve pipe, cement sheath, annular fluid, shale content and gravel pack.Existing bearing calibration mainly for these three kinds of factors of sleeve pipe, cement sheath and shale content, and these methods mainly experimentally plate correct.And annular fluid and these two influence factors of gravel pack also do not have corresponding bearing calibration at present.
Summary of the invention
In order to overcome the problems referred to above that prior art exists, the invention provides a kind of method that carbon/oxygen log environmental impact factor corrects, carry out single influence factor by the method for sharp Monte Carlo simulation and carry out theoretical modeling, the correcting plate theorized, sum up the relation between each influence factor and measured value, then set up actual calibration model according to reference lamina method.
Technical scheme of the present invention is as follows: a kind of method that carbon/oxygen log environmental impact factor corrects, and comprises the steps:
Step 101, log obtains and layer to be corrected is chosen: adopt conventional carbon oxygen logging method, neutron source is utilized to launch fast neutron and stratum each element generation inelastic scattering, the each pantogen daughter nucleus in stratum discharges inelastic scattering gamma, utilize the characteristic spectrum peak of each element to carry out spectrum unscrambling, extract log; According to log playback, find the annular fluid factor correction reference lamina and gravel pack factor correction reference lamina that there is annular fluid impact and gravel pack impact, and using the C/O log value of these two layer positions as the variable of in data analysis;
Step 102, Monte Carlo theoretical modeling: the method for sharp Monte Carlo simulation carries out theoretical modeling to single influence factor, the correcting plate theorized analyzes the relation between each influence factor and measured value;
Step 103, sets up actual calibration model: utilize reference lamina method to carry out data fitting, draw empirical formula COR=A × COR+B, in formula, COR is carbon-to-oxygen ratio, and A, B are correction coefficient, generally determines according to the actual geological condition in different oil field;
Step 104: influence factor corrects: on the basis of step 103, the empirical formula utilizing matching to obtain carries out annular fluid to carbon-to-oxygen ratio and gravel pack corrects, carries out quantitative interpretation by the carbon-to-oxygen ratio value after correcting.
In step 102, described influence factor comprises: sleeve pipe, cement sheath, annular fluid, shale content and gravel pack.
Further, utilizing reference lamina method to carry out data fitting described in step 103 is that the reference lamina chosen based on step 102 carries out, wherein:
(1) choosing method of annular fluid factor correction reference lamina: select not by the water layer that annular space affects, and whether the shale content of this layer, degree of porosity and have the parameters such as gravel pack as far as possible roughly the same with the maintenance of layer to be corrected, get the C/O value of corresponding interval as annular space calibration mark layer characteristic;
(3) choosing method of gravel pack factor correction reference lamina: select the water layer that shale content is minimum, and the shale content on this stratum, degree of porosity and whether affect these three parameters by annular space and keep roughly the same with layer to be corrected, get the C/O value of corresponding interval as gravel pack calibration mark layer characteristic.
Further, described in step 103, the establishment step of calibration model specifically comprises: carry out annular fluid to individual well and gravel pack two influence factors are analyzed, according to the form of curve, when a certain interval C/O presents stepped increase with Si/Ca envelope of curves area compared with the envelope size of adjacent layer position, then think that this layer exists annular fluid impact.First choose the C/O value X affecting interval by annular fluid and gravel pack, then choose the C/O value Y of the interval do not affected by annular fluid and gravel pack.Process the data chosen, take X as abscissa, Y sets up scatter diagram for ordinate, Y data and X parameter are set up data relationship, according to analysis result, setting up and correcting fitting formula is Y=aX+b, and wherein, Y is the C/O value of mark interval, dimensionless; X is the C/O value of influenced interval, dimensionless; A is the slope of curve, and b is intercept.
The present invention is as follows relative to the beneficial effect of prior art: the present invention combines the annular fluid of carbon/oxygen log and these two influence factors of gravel pack, by sharp Monte Carlo theoretical modeling, the correcting plate that theorizes, sets up calibration model according to reference lamina method; The inventive method accurately can process the well-log information affected by logging environment, prove through production practices, utilize the inventive method can obtain true formation information in C/O curve, and then improve the precision that stratum remaining oil saturation well log interpretation evaluates degree of porosity, there is stronger versatility; The present invention is that the correction of RPM well logging influence factor provides method; The inventive method can Integral lifting remaining oil saturation well log interpretation ability, pulls operation, instructs the economical and efficient of offshore oilfield to develop.
Accompanying drawing explanation
Fig. 1 is annular fluid interval identification schematic diagram.
Fig. 2 is that the annular fluid of Monte Carlo simulation is on the impact of C/O value.
Fig. 3 is that the gravel pack of Monte Carlo simulation is on the impact of C/O value.
Fig. 4 is the annular fluid calibration model utilizing data fitting analytic approach to obtain in example of the present invention.
Fig. 5 is the gravel pack calibration model utilizing data fitting analytic approach to obtain in example of the present invention.
Fig. 6 is that the annular fluid in the present invention corrects example, and wherein ALAVGCO is the C/O curve after correcting, and reduction compared with measured value, is familiar with plate and conforms to.
Fig. 7 is that the gravel pack in the present invention corrects example, and wherein ALAVGCO is the C/O curve after correcting, and increase compared with measured value, is familiar with plate and conforms to.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, carbon/oxygen log environmental impact factor of the present invention bearing calibration is described in further detail, specifically comprises the steps:
Step 101, adopts the operation of carbon oxygen logging technology conventional method to obtain log data, according to log data, pick out C/O and Si/Ca log, according to the form of curve, select the interval of annular fluid and gravel pack, get the C/O curve values of these two intervals; Annular fluid interval identification schematic diagram is as Fig. 1.
Step 102, Monte Carlo theoretical modeling: the actual geology in combining target region and formation water analysis of data, Modling model.Concrete model is as follows: wellbore section is made up of wellbore fluid, sleeve pipe, cement sheath, and well is full of fresh water, and sleeve pipe internal-and external diameter is respectively 224.5mm and 244.5mm, and oil pipe internal-and external diameter is respectively 62.0mm and 73.0mm; The thickness of cement sheath is 33.3cm, and composition is CaSiO
3, density is 1.95g/cm3; The radial radius on stratum is 70cm, and height is 102cm, and fills different fluid and lithology material respectively; Formation water salinity is 35000ppm; The distance of length spacing is respectively 159.766mm and 235.966mm.The annular fluid of Monte Carlo simulation on the impact of C/O value as shown in Figure 2; The gravel pack of Monte Carlo simulation on the impact of C/O value as shown in Figure 3.
Step 103, finds the layer to be corrected that affects by annular space and not by the reference lamina that annular space affects.
Step 104, utilize data fitting analytic approach to carry out matching to the C/O data picked out from step 102, the annular fluid calibration model that matching obtains is as shown in Figure 4; The gravel pack calibration model that matching obtains as shown in Figure 5; Matching model formation is out utilized to correct annular fluid and gravel pack respectively.
Concrete, annular fluid is carried out to individual well and gravel pack two influence factors are analyzed, according to the form of curve, when a certain interval C/O presents stepped increase with Si/Ca envelope of curves area compared with the envelope size of adjacent layer position, then think that this layer exists annular fluid impact (the red block interval as in Fig. 1).First choose the C/O value X affecting interval by annular fluid and gravel pack, then choose the C/O value Y of the interval do not affected by annular fluid and gravel pack.The data chosen are processed, take X as abscissa, Y sets up scatter diagram for ordinate, Y data and X parameter are set up data relationship, according to analysis result, it is Y=-0.069X+1.978, gravel pack correction fitting formula Y=-2.688X+7.428 that annular fluid corrects fitting formula, wherein, Y is the C/O value of mark interval, dimensionless; X is the C/O value of influenced interval, dimensionless.
The annular fluid calibration model utilizing step 104 matching to obtain corrects annular fluid, as shown in Figure 6, wherein ALAVGCO is the C/O curve after correcting, reduction compared with measured value, be familiar with plate and conform to, illustrate that set up calibration model has good precision.
The gravel pack calibration model utilizing step 104 matching to obtain corrects gravel pack, as shown in Figure 7, wherein ALAVGCO is the C/O curve after correcting, increase compared with measured value, be familiar with plate and conform to, illustrate that set up calibration model has good precision.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.The content that this manual is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (4)
1. a method for carbon/oxygen log environmental impact factor correction, is characterized in that: comprise the steps:
Step 101, log obtains and layer to be corrected is chosen: adopt conventional carbon oxygen logging method, neutron source is utilized to launch fast neutron and stratum each element generation inelastic scattering, the each pantogen daughter nucleus in stratum discharges inelastic scattering gamma, utilize the characteristic spectrum peak of each element to carry out spectrum unscrambling, extract log; According to log playback, find the annular fluid factor correction reference lamina and gravel pack factor correction reference lamina that there is annular fluid impact and gravel pack impact, and using the C/O log value of these two layer positions as the variable of in data analysis;
Step 102, Monte Carlo theoretical modeling: the method for sharp Monte Carlo simulation carries out theoretical modeling to single influence factor, the correcting plate theorized analyzes the relation between each influence factor and measured value;
Step 103, sets up actual calibration model: utilize reference lamina method to carry out data fitting, draw empirical formula COR=A × COR+B, in formula, COR is carbon-to-oxygen ratio, and A, B are correction coefficient, determines according to the actual geological condition in different oil field;
Step 104: influence factor corrects: on the basis of step 103, the empirical formula utilizing matching to obtain carries out annular fluid to carbon-to-oxygen ratio and gravel pack corrects, carries out quantitative interpretation by the carbon-to-oxygen ratio value after correcting.
2. method according to claim 1, it is characterized in that: in step 102, described influence factor is: sleeve pipe, cement sheath, annular fluid, shale content and gravel pack.
3. method according to claim 1, is characterized in that: utilizing reference lamina method to carry out data fitting described in step 103 is that the reference lamina chosen based on step 102 carries out, wherein:
(1) choosing method of annular fluid factor correction reference lamina: select not by the water layer that annular space affects, and whether the shale content of this layer, degree of porosity and have these three parameters of gravel pack roughly the same with the maintenance of layer to be corrected, get the C/O value of corresponding interval as annular space calibration mark layer characteristic;
(2) choosing method of gravel pack factor correction reference lamina: select the water layer that shale content is minimum, and the shale content on this stratum, degree of porosity and whether affect these three parameters by annular space and keep roughly the same with layer to be corrected, get the C/O value of corresponding interval as gravel pack calibration mark layer characteristic.
4. method according to claim 1, it is characterized in that: described in step 103, the establishment step of calibration model specifically comprises: annular fluid is carried out to individual well and gravel pack two influence factors are analyzed, according to the form of curve, when a certain interval C/O presents stepped increase with Si/Ca envelope of curves area compared with the envelope size of adjacent layer position, then think that this layer exists annular fluid impact; First choose the C/O value X affecting interval by annular fluid and gravel pack, then choose the C/O value Y of the interval do not affected by annular fluid and gravel pack; Process the data chosen, take X as abscissa, Y sets up scatter diagram for ordinate, Y data and X parameter are set up data relationship, according to analysis result, setting up and correcting fitting formula is Y=aX+b, and wherein, Y is the C/O value of mark interval, dimensionless; X is the C/O value of influenced interval, dimensionless; A is the slope of curve, and b is intercept.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510905675.5A CN105370273B (en) | 2015-12-10 | 2015-12-10 | A kind of method of carbon/oxygen log environmental impact factor correction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510905675.5A CN105370273B (en) | 2015-12-10 | 2015-12-10 | A kind of method of carbon/oxygen log environmental impact factor correction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105370273A true CN105370273A (en) | 2016-03-02 |
| CN105370273B CN105370273B (en) | 2018-01-26 |
Family
ID=55372831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510905675.5A Active CN105370273B (en) | 2015-12-10 | 2015-12-10 | A kind of method of carbon/oxygen log environmental impact factor correction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105370273B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958443A (en) * | 2017-05-02 | 2017-07-18 | 长江大学 | A kind of bearing calibration of carbon/oxygen log mud filtrate invasion influence factor and system |
| CN107152277A (en) * | 2017-06-07 | 2017-09-12 | 长江大学 | A kind of carbon/oxygen log calculates the method and system of remaining oil saturation |
| CN108661632A (en) * | 2018-05-07 | 2018-10-16 | 何巍巍 | A kind of high-precision carbon/oxygen log method |
| CN109779618A (en) * | 2019-01-10 | 2019-05-21 | 中国石油大学(北京) | Stratum remaining oil saturation determines method and device |
| CN109915120A (en) * | 2019-04-16 | 2019-06-21 | 北京恒泰万博石油技术股份有限公司 | A kind of resistivity logging while drilling logging system bearing calibration based on environmental factor |
| CN110344817A (en) * | 2019-02-21 | 2019-10-18 | 中陕核工业集团地质调查院有限公司 | Application of the petroleum hole cementing concrete ring property parameters in the amendment of old well gamma repetition measurement coefficient |
| CN112031742A (en) * | 2020-09-03 | 2020-12-04 | 中海油田服务股份有限公司 | Carbon-oxygen ratio energy spectrum logging saturation interpretation method based on database |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4136278A (en) * | 1977-07-14 | 1979-01-23 | Dresser Industries, Inc. | Method and apparatus for pulsed neutron spectral analysis using spectral stripping |
| CN101906963A (en) * | 2010-07-23 | 2010-12-08 | 中国石油化工集团公司 | Method for determining saturation by using C/O and formation macro capture cross-section intersecting technique |
| US8011238B2 (en) * | 2008-10-09 | 2011-09-06 | Chevron U.S.A. Inc. | Method for correcting the measured concentrations of gas components in drilling mud |
| WO2014080107A1 (en) * | 2012-11-20 | 2014-05-30 | Total Sa | Method for assessing a quantity of hydrocarbons in a deposit |
| CN104929627A (en) * | 2015-06-25 | 2015-09-23 | 中国海洋石油总公司 | Method for calculating wellbore water-holding capacity and formation water saturation in RPM well logging |
-
2015
- 2015-12-10 CN CN201510905675.5A patent/CN105370273B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4136278A (en) * | 1977-07-14 | 1979-01-23 | Dresser Industries, Inc. | Method and apparatus for pulsed neutron spectral analysis using spectral stripping |
| US8011238B2 (en) * | 2008-10-09 | 2011-09-06 | Chevron U.S.A. Inc. | Method for correcting the measured concentrations of gas components in drilling mud |
| CN101906963A (en) * | 2010-07-23 | 2010-12-08 | 中国石油化工集团公司 | Method for determining saturation by using C/O and formation macro capture cross-section intersecting technique |
| WO2014080107A1 (en) * | 2012-11-20 | 2014-05-30 | Total Sa | Method for assessing a quantity of hydrocarbons in a deposit |
| CN104929627A (en) * | 2015-06-25 | 2015-09-23 | 中国海洋石油总公司 | Method for calculating wellbore water-holding capacity and formation water saturation in RPM well logging |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958443B (en) * | 2017-05-02 | 2020-10-09 | 长江大学 | Method and system for correcting carbon-oxygen ratio logging drilling fluid invasion influence factors |
| CN106958443A (en) * | 2017-05-02 | 2017-07-18 | 长江大学 | A kind of bearing calibration of carbon/oxygen log mud filtrate invasion influence factor and system |
| CN107152277A (en) * | 2017-06-07 | 2017-09-12 | 长江大学 | A kind of carbon/oxygen log calculates the method and system of remaining oil saturation |
| CN107152277B (en) * | 2017-06-07 | 2020-11-10 | 长江大学 | Method and system for calculating residual oil saturation degree through carbon-oxygen ratio logging |
| CN108661632A (en) * | 2018-05-07 | 2018-10-16 | 何巍巍 | A kind of high-precision carbon/oxygen log method |
| CN108661632B (en) * | 2018-05-07 | 2022-02-11 | 何巍巍 | High-precision carbon-oxygen ratio logging method |
| CN109779618A (en) * | 2019-01-10 | 2019-05-21 | 中国石油大学(北京) | Stratum remaining oil saturation determines method and device |
| CN109779618B (en) * | 2019-01-10 | 2020-07-07 | 中国石油大学(北京) | Method and device for determining formation residual oil saturation |
| CN110344817B (en) * | 2019-02-21 | 2020-10-16 | 中陕核工业集团地质调查院有限公司 | Application of petroleum hole well cementation cement sheath attribute parameters in old well gamma re-measurement coefficient correction |
| CN110344817A (en) * | 2019-02-21 | 2019-10-18 | 中陕核工业集团地质调查院有限公司 | Application of the petroleum hole cementing concrete ring property parameters in the amendment of old well gamma repetition measurement coefficient |
| CN109915120A (en) * | 2019-04-16 | 2019-06-21 | 北京恒泰万博石油技术股份有限公司 | A kind of resistivity logging while drilling logging system bearing calibration based on environmental factor |
| CN112031742A (en) * | 2020-09-03 | 2020-12-04 | 中海油田服务股份有限公司 | Carbon-oxygen ratio energy spectrum logging saturation interpretation method based on database |
| CN112031742B (en) * | 2020-09-03 | 2023-07-04 | 中海油田服务股份有限公司 | Carbon-oxygen ratio energy spectrum logging saturation interpretation method based on database |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105370273B (en) | 2018-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105370273A (en) | Method for correcting carbon-oxygen ratio logging environment influencing factors | |
| CN106600436B (en) | Method for calculating mineral component content and porosity of shale gas formation | |
| KR101782294B1 (en) | Modeling method for gas production of cbm reservoir rocks | |
| CN103670383B (en) | A kind of method and apparatus identifying shale oil deposit Effective Reservoirs | |
| CN103114840B (en) | A kind of high-too high ripe shale organic carbon content method of calculation and device | |
| CN103670388A (en) | Method for evaluating organic carbon content of shale | |
| CN104047597A (en) | Fat gas mud shale stratum well log standardizing method | |
| CN101906963A (en) | Method for determining saturation by using C/O and formation macro capture cross-section intersecting technique | |
| CN107977480B (en) | Shale gas reservoir gas production performance rapid evaluation method | |
| CN104806232B (en) | A kind of method for determining porosity lower limit of fracture | |
| CN105822293A (en) | Method for recognizing superior shale gas reservoir by adopting conventional logging information | |
| CN103867198B (en) | Method for distinguishing formation density of carbonatite natural gas reservoir | |
| CN105676294B (en) | A kind of carbonate rock fractured cave type Reservoir Body quantitative description | |
| CN105697002A (en) | Method for recognizing coal measure strata lithology | |
| CN110727035A (en) | Low-permeability strong heterogeneous gas reservoir gas-water layer identification method | |
| CN104750884A (en) | Quantitative evaluation method of shale oil and gas enrichment index on the basis of multi-factor nonlinear regression | |
| CN105257285B (en) | Oil gas fills the evaluation method of ability from hydrocarbon source rock to karst reservoir | |
| KR101731221B1 (en) | Method for estimating facies of cbm reservoir rocks | |
| CN109343099B (en) | Method for calculating mud content of stratum containing radioactive substances by using GR and SP in combination mode | |
| RU2363966C1 (en) | Method of survey and assessment of reserves of oil deposits in tight fissured stringers developed in oil source strata | |
| CN107644383A (en) | The qualitative method of carbonate rock | |
| CN106285653A (en) | The method determining the organic porosity of shale gas reservoir | |
| CN107481298B (en) | Oil reservoir profile compiling method comprising inclined well | |
| CN109444980B (en) | Efficient deep geothermal resource exploration method | |
| CN110244357A (en) | A kind of structure destruction type Foregone pool sentences knowledge method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant after: China Offshore Oil Group Co., Ltd. Applicant after: CNOOC (China) Limited Zhanjiang Branch Address before: China CNOOC Building No. 25 Beijing 100000 Chaoyang District Chaoyangmen North Street Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC (China) Limited Zhanjiang Branch |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Yuelin Inventor after: Guo Haimin Inventor after: He Shenglin Inventor after: Zheng Yongjian Inventor after: Wang Lijuan Inventor before: Li Yuelin Inventor before: Guo Haimin Inventor before: He Shenglin Inventor before: Zheng Yongjian Inventor before: Wang Lijuan |
|
| CB03 | Change of inventor or designer information |