CN105298485B - A kind of individual well oil-gas geology integrated evaluating method - Google Patents
A kind of individual well oil-gas geology integrated evaluating method Download PDFInfo
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- CN105298485B CN105298485B CN201510776171.8A CN201510776171A CN105298485B CN 105298485 B CN105298485 B CN 105298485B CN 201510776171 A CN201510776171 A CN 201510776171A CN 105298485 B CN105298485 B CN 105298485B
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Abstract
The present invention relates to a kind of individual well oil-gas geology integrated evaluating methods, comprising the following steps: 1) Evaluation of source rocks；2) evaluating reservoir；3) Cap Assessment；4) evaluation of trap；5) petroleum source correlation.The individual well oil-gas geology integrated evaluating method is guidance with Based On Sequence Stratigraphic Theory, landwaste is observed with system, based on rock core and sample analysis, in conjunction with geophysical informations such as well loggings, system divide stratum and and offset wells correlation, research purpose series of strata On The Sedimentary Facies Marks, type of sedimentary facies and feature, characteristics of the stratigraphic sequence, the cycle of sedimentation, structure, construction feature, Division of Sedimentary Facies and cored interval, comprehensive logging well section sedimentary micro, carry out SEDIMENTARY ENVIRONMENT, establish individual well facies model and full well sedimentary facies section, specify the correlation of sedimentary facies and raw storage cap rock, the analysis of oil-gas geology fundamental is carried out for individual well, and summary foundation is provided.
Description
Technical field
The present invention relates to a kind of individual well oil-gas geology integrated evaluating methods.
Background technique
Subei Basin is the disconnected col type basin of Mesozoic and Cenozoic time, and pre-Jurassic substrate is raw by the Gu of print branch-Stage of Yanshan fold
Boundary and Triassic Stratigraphic composition, formation and disconnected col phase-Fault-subsidence Stage-one down warping region of period of transfer of development experience Depression Stage-in basin
Five depositional phases of phase.FE recessed interior development Mesozoic and Cenozoic strata sedimentary rocks in basin, deposition thickness is up to 5200km, from bottom to top
Main deposit filling Upper Cretaceous Pukou group (K2p), Chi Shan group (K2c), Paleogene System Taizhou group (E1t), Funing Formation
(E1f), DN group (E2d part), SD group (E2s), Neogene System Yancheng group (Ny) and the 4th be the stratum such as DT group (Qd).Sedimentation
By tectogenetic control, after the movement of Cretaceous period end Yizheng, under a series of control of tension fault activities, Taizhou group, mound
Peaceful group experienced the subsidence stage that basin entirety rapid decrease, waters broadness, water body are deepened；Wubao post exercise DN group, SD group,
Since east northeast facial difference lifting fault activities are very strong, unified lake basin is divided into concave-convex alternate sedimentary structure landscape, basin
Ground is into people's fault-depression stage；After SD movement, fault activities are opposite to be weakened, and lake basin withers away, switchs to land detrital deposit, in basin again by
Rift phases out into subsidence stage, and the middle Pliocene Epoch switchs to down warping region concentrating effects.In addition to tectonic movement, abstriction play deposition
Outside control action, the variation of weather also influences the division of sedimentation type and parfacies, weather experience of the research area stratum in the deposition phase
Warmed moist-is more xeothermic-warmed moist one xeothermic periodicity, so as to form numerous depositional environments and deposition class
Type.
Mud shale oil-gas reservoir belongs to untraditional reservoir scope, but is different from tight sand oil-gas reservoir, and maximum difference exists
One is stored up in source, therefore oil gas row fortune, occurrence status, reservoir space and remodeling method etc. have its unique distinction, at present state
It is interior still immature to mud shale Evaluation of Oil And Gas method, also in the exploratory stage.Have multiple wells in FE sections of mud in view of northern Suzhou exploratory area
Good oil/gas show is seen in shale, it is most likely that take over money as after FSH sections, DN Zu Deng main force sandstone oil reservoir
Source, therefore exploratory evaluation study is carried out it is necessary to set special topic.
Summary of the invention
The technical problem to be solved by the present invention is for overcome the deficiencies in the prior art, providing a kind of individual well oil-gas geology
Integrated evaluating method.
The technical solution adopted by the present invention to solve the technical problems is: a kind of individual well oil-gas geology integrated evaluating method,
The following steps are included:
1) Evaluation of source rocks: equidistant sampling is carried out to the FE section of hydrocarbon source rock, FSH sections of middle parts and FS sections of top mud shales and is surveyed
Measurement results are compared with geochemical logging analysis result for examination analysis；
2) evaluating reservoir: coring analysis is carried out to oil-bearing layer position sand group below, utilizes ordinary sheet and total rock data point
Analysis carries out the projection of triangle end member, measures coring section according to the classification schemes of China National Petroleum Corporation's standard sandstone
The predominant amount of arkose and feldspar；
3) Cap Assessment: the parameters such as porosity, depth of cover, thickness in monolayer, muddy ground and depositional environment are chosen and are calculated
The parameter index of sealing ability of cap rock；
4) evaluation of trap: being specific exploration targets petroleum resources amount and CALCULATING OILFIELD geology using trap as evaluation unit
The main method of reserves calculates the stock number of structural trap, calculation formula using volumetric method are as follows:
Q=0.01Aoh Φ SoBoi,
Wherein: Q is petroleum geology stock number, and Ao is oil area, and h is effective thickness,
Φ is effecive porosity, and So is oil saturation, and Boi is oil volume factor in formation；
5) petroleum source correlation: being compared using fingerprint technique, finds the affiliation between crude oil and hydrocarbon source rock.
Preferably, in step 1), using maceral classification and Pyro-GC classification to the organic matter of hydrocarbon source rock
It is analyzed, and then determines the developmental state of hydrocarbon source rock organic matter.
Preferably, in step 2, to the RESERVOIR PORE STRUCTURE of lower sand group reservoir, replacement pressure is hollow billet curve, partially thin askew
Degree feature is analyzed, and obtains lower sand group Reservoir type.
Preferably, establishing the grade of parameters index according to the contribution to sealing ability of cap rock in step 3).
The invention has the advantages that the individual well oil-gas geology integrated evaluating method is guidance with Based On Sequence Stratigraphic Theory,
Based on system observation landwaste, rock core and sample analysis, in conjunction with geophysical informations such as well loggings, system divide stratum and with neighbour
Well comparison, research purpose series of strata On The Sedimentary Facies Marks, type of sedimentary facies and feature, characteristics of the stratigraphic sequence, the cycle of sedimentation, structure, structure
Feature, Division of Sedimentary Facies and cored interval, comprehensive logging well section sedimentary micro are made, SEDIMENTARY ENVIRONMENT is carried out, establishes single well facies
Mode and full well sedimentary facies section specify the correlation of sedimentary facies and raw storage cap rock, carry out oil-gas geology for individual well and want substantially
Element analysis provides summary foundation.
Specific embodiment
A kind of individual well oil-gas geology integrated evaluating method, comprising the following steps:
1) Evaluation of source rocks: equidistant sampling is carried out to the FE section of hydrocarbon source rock, FSH sections of middle parts and FS sections of top mud shales and is surveyed
Measurement results are compared with geochemical logging analysis result for examination analysis；
2) evaluating reservoir: coring analysis is carried out to oil-bearing layer position sand group below, utilizes ordinary sheet and total rock data point
Analysis carries out the projection of triangle end member, measures coring section according to the classification schemes of China National Petroleum Corporation's standard sandstone
The predominant amount of arkose and feldspar；
3) Cap Assessment: the parameters such as porosity, depth of cover, thickness in monolayer, muddy ground and depositional environment are chosen and are calculated
The parameter index of sealing ability of cap rock；
4) evaluation of trap: being specific exploration targets petroleum resources amount and CALCULATING OILFIELD geology using trap as evaluation unit
The main method of reserves calculates the stock number of structural trap, calculation formula using volumetric method are as follows:
Q=0.01Aoh Φ SoBoi,
Wherein: Q is petroleum geology stock number, and Ao is oil area, and h is effective thickness,
Φ is effecive porosity, and So is oil saturation, and Boi is oil volume factor in formation；
5) petroleum source correlation: being compared using fingerprint technique, finds the affiliation between crude oil and hydrocarbon source rock.
Preferably, in step 1), using maceral classification and Pyro-GC classification to the organic matter of hydrocarbon source rock
It is analyzed, and then determines the developmental state of hydrocarbon source rock organic matter.
Preferably, in step 2, to the RESERVOIR PORE STRUCTURE of lower sand group reservoir, replacement pressure is hollow billet curve, partially thin askew
Degree feature is analyzed, and obtains lower sand group Reservoir type.
Preferably, establishing the grade of parameters index according to the contribution to sealing ability of cap rock in step 3).
Compared with prior art, which is guidance with Based On Sequence Stratigraphic Theory, to be
Based on overall view examines landwaste, rock core and sample analysis, in conjunction with well logging etc. geophysical informations, system divide stratum and with offset well pair
Than research purpose series of strata On The Sedimentary Facies Marks, type of sedimentary facies and feature, characteristics of the stratigraphic sequence, the cycle of sedimentation, structure, construction are special
Sign, Division of Sedimentary Facies and cored interval, comprehensive logging well section sedimentary micro carry out SEDIMENTARY ENVIRONMENT, establish individual well facies model
With full well sedimentary facies section, the correlation of sedimentary facies and raw storage cap rock is specified, carries out oil-gas geology fundamental point for individual well
Analysis provides summary foundation.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (1)
1. a kind of individual well oil-gas geology integrated evaluating method, which comprises the following steps:
1) equidistant sampling and testing point Evaluation of source rocks: is carried out to the FE section of hydrocarbon source rock, FSH sections of middle parts and FS sections of top mud shales
Analysis Measurement results is compared with geochemical logging analysis result, wherein use maceral classification and Pyro-GC
Classification analyzes the organic matter of hydrocarbon source rock, and then determines the developmental state of hydrocarbon source rock organic matter；
2) evaluating reservoir: coring analysis is carried out to oil-bearing layer position sand group below, is analyzed, is pressed using ordinary sheet and total rock data
According to the classification schemes of China National Petroleum Corporation's standard sandstone, the projection of triangle end member is carried out, the feldspar of coring section is measured
The predominant amount of sandstone and feldspar, wherein to the RESERVOIR PORE STRUCTURE of lower sand group reservoir, replacement pressure is hollow billet curve, partially thin askew
Degree feature is analyzed, and obtains lower sand group Reservoir type；
3) Cap Assessment: porosity, depth of cover, thickness in monolayer, muddy ground and depositional environment parameter are chosen and calculates cap rock envelope
Close the parameter index of ability, wherein the grade of parameters index is established according to the contribution to sealing ability of cap rock；
4) evaluation of trap: being specific exploration targets petroleum resources amount and CALCULATING OILFIELD oil in place using trap as evaluation unit
Main method, using volumetric method calculate structural trap stock number, calculation formula are as follows:
Q=0.01Aoh Φ SoBoi,
Wherein: Q is petroleum geology stock number, and Ao is oil area, and h is effective thickness,
Φ is effecive porosity, and So is oil saturation, and Boi is oil volume factor in formation；
5) petroleum source correlation: being compared using fingerprint technique, finds the affiliation between crude oil and hydrocarbon source rock.
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| CN105804733A (en) * | 2016-03-17 | 2016-07-27 | 成都创源油气技术开发有限公司 | Shale oil logging evaluation method |
| CN107589466B (en) * | 2016-07-06 | 2019-04-02 | 中国石油化工股份有限公司 | A method of for evaluating undiscovered resources quantity space distribution characteristics |
| CN107676082B (en) * | 2016-08-01 | 2020-07-14 | 中国石油化工股份有限公司 | Method for correcting oil saturation of rock core by using logging synthetic curve |
| CN107965314A (en) * | 2016-10-18 | 2018-04-27 | 中国石油化工股份有限公司 | The computational methods of glutenite structural oil pool oil columns |
| CN110749940B (en) * | 2018-07-23 | 2021-10-22 | 中国石油化工股份有限公司 | Quantitative configuration method for exploring reserve source constitution of crude oil depression |
| CN109061765B (en) * | 2018-09-26 | 2020-03-17 | 西南石油大学 | Trap evaluation method for heterogeneous thin sandstone interbed reservoir |
| CN109630090B (en) * | 2018-10-30 | 2020-03-10 | 中国石油天然气集团有限公司 | Storage cover combined well logging evaluation method and device |
| CN110656934B (en) * | 2019-10-08 | 2024-04-30 | 中国石油天然气股份有限公司 | Compaction-removing stratum comparison method for tight sandstone reservoir |
| CN112835127A (en) * | 2021-01-07 | 2021-05-25 | 北京油源恒业科技有限公司 | Land basin oil source rock dividing method based on sand-shale interbed combination |
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| CN104991274B (en) * | 2015-07-03 | 2017-10-03 | 中国石油大学(华东) | The Favorable Areas method for optimizing of single trap level under a variety of geologic(al) factor quantity constraints |
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