CN110320570A - A kind of synthesis stratum control methods under complex geological condition - Google Patents
A kind of synthesis stratum control methods under complex geological condition Download PDFInfo
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Abstract
The present invention relates to the synthesis stratum control methods under a kind of complex geological condition.The Strata Comparison method includes: that the local unconformity face in research area is determined using interval transit time and seismic data；Using extinct plants and animal, well logging and well-log information, determine local unconformity face with the group or section on stratum below overlying strata and local unconformity face；Standard well in fixed group or section stratum and research area is subjected to Strata Comparison, obtains strata division data.Synthesis stratum control methods under complex geological condition of the invention, can solve complex geologic conditions, drilled well is unevenly distributed, and the Strata Comparison problem in the big area of whole Strata Comparison work difficulty improves the accuracy of Strata Comparison.
Description
Technical field
The invention belongs to Stratigraphic Division And Correlation fields, and in particular to the synthesis Strata Comparison side under a kind of complex geological condition
Method.
Background technique
Strata division comparison is the basis of the research work such as deposition, reservoir in oil and gas exploration work.If one regional
Stratum age is unclear, and Stratigraphic Division And Correlation is chaotic, will have a direct impact on the effect of oil-gas exploration and production.It is accurate divide stratum and
Comparison for recognizing a regional geologic history, ancient geoaraply looks, and then instructs the oil-gas exploration and development of this area to have
Highly important meaning.
The method of Strata Comparison mainly has petrologic method, paleontology method, geophysical method etc..Petrologic method
It is using the marks such as heavy mineral contained by the lithologic character on stratum itself, rock association, cyclic type, stratum comparison stratum, usually
Suitable for small-scale Strata Comparison；Paleontology method is that the fossil contained using stratum or fossil assemblage are compared, into
And determine whether geologic age is identical；Geophysical method is mainly related with contained fluid in the physical features of rock and rock
Physical features indicate as a comparison.Above-mentioned single Strata Comparison method all has some limitations, and in actual operation, leads to
It is often comprehensive to carry out Strata Comparison work using a variety of methods.
Yang Yun etc. propose a kind of fine stratum control methods of bad ground (petroleum geology and engineering, 2010 volume 24
4th phase), the information such as integrated use seismic data, well-log information, test data, compared using the cycle under reference lamina control,
The method that multi-platform multidimensional combines and level constraint, well shake combine achievees the purpose that fine Strata Comparison.This method is realized to sand
The Division and contrast on the stratum of layer group and the above rank, but due to not utilizing paleontologic analysis that may go out in Complicated structure area
Existing formation lithology, electrical property feature is similar and situation that stratigraphic horizon is different, causes stratum to staggered floor position.
Wu is superfine to propose a kind of practical stratum control methods (China Petroleum and chemical industry mark for terrestrial facies Complicated Fault Block Oilfield
Quasi- and quality, the 7th phase in 2014), according under reference lamina control cycle comparison, grading control, isopic zone is not treated respectively,
Well shake combines, and the principle of dynamic authentication sufficiently uses multi-information fusion, establishes chronostratigraphic architecture.Though this method utilizes region
Plane of unconformity divides and comparison stratum, but the case where do not consider local unconformity, is easy to appear the case where admitting one's mistake bed succession, leads
Strata Comparison accuracy is caused to reduce.
Application publication number is that the patent of CN106324698A discloses a kind of Strata Comparison method for oil-gas bearing basin
And system, this method is using sedimentary system as unit, for sedimentary system same in basin and different sedimentary systems using different
Strata Comparison method, etc. lithologic comparisons and isochronism comparison carry out comprehensive analysis, solve inside same sedimentary system, and
Strata Comparison problem between different sedimentary systems.This method is not due to considering stratum thickness change that may be present in the plane
And unconformity contact relation, it is easy to produce the mistake " when wearing ".
Application publication number is that the patent of CN106372319A discloses a kind of method of earthquake model Stratigraphic Division And Correlation, should
Method application earthquake model is examined and correction drilling well layering, solves the contradiction of drilling well layering and seismographic stratification, is finally reached brill
Well layering and model it is equal whens be closed, it is more reasonable to make to be layered.In certain areas, due to undergoing more phase tectonic movements, stratum exists
Regional unconformity: or mature fault, Polyphase activity, sedimentation thickness change is big, causes to be unevenly distributed in the plane；Or
Construction complexity, a plurality of fault development and mutually cutting, form multiple broken complex fault blocks, cause stratum crushing；Or terrestrial facies
Sedimentation environment is complicated, and formation lithology cross directional variations are big.Under above-mentioned complex geological condition, the comparison of seismic data wave group feature
Unobvious, the accuracy and precision of Strata Comparison result obtained by this method be not good enough.
Summary of the invention
The purpose of the present invention is to provide the synthesis stratum control methods under a kind of complex geological condition, to solve existing
The accuracy of Strata Comparison result obtained by method and the problem of precision deficiency.
To achieve the above object, the technical scheme adopted by the invention is that:
A kind of synthesis stratum control methods under complex geological condition, comprising the following steps:
1) the local unconformity face in research area is determined using interval transit time and seismic data；
2) extinct plants and animal, well logging and well-log information are utilized, determines local unconformity face with overlying strata and local unconformity face
The group or section on following stratum；
3) the standard well in group or section stratum and research area determined step 2) carries out Strata Comparison, obtains strata division
Data.
Synthesis stratum control methods under complex geological condition of the invention can solve complex geologic conditions, drilled well point
Cloth is uneven, and the Strata Comparison problem in the big area of whole Strata Comparison work difficulty improves the accuracy of Strata Comparison.
Before the local unconformity face for determining research area, the areal geology data where research on utilization area, clearly research area
Stratum characteristic.Region outcrop data and drilling data where research area can disclose and reflecting regional bed succession, basic
Stratum law of development and feature, such as Biostratigraphic Features, index fossil, depositional sequence and sedimentary facies, lithology combination feature
A variety of formation informations, these data can effectively direct study the Strata Comparison in area.
In step 1), the position of local unconformity is determined according to the mutated site of interval transit time, by the mutation of interval transit time
Point calibration, according to the corresponding relationship of seismic wave groups, determines the local unconformity face on seismic profile.In normal compaction situation
Under, clastic rock pores degree shows as steady state with the variation gradual change of depth on sound wave curve.If interval transit time exists prominent
Become, outside the factor for excluding tomography, it is believed that there are local unconformity, the position of interval transit time mutation is that part is not whole in research area
The position of conjunction.
The local unconformity that the step is identified using seismic data tracking interval transit time, and then determine local unconformity flat
Distribution on face.
In step 2), the index fossil of the paleontologic analysis and regional stratum studied in area and fossil assemblage are carried out pair
Than determining the group or section on stratum.According to well logging, the well-log information in research area, the lithology for studying area stratum, electrical spy are determined
Sign, then compare with regional stratum feature, further clarify the group or section on stratum.
Here index fossil refers to that distribution is wide, quantity is big, the distinctive Skeletal in a certain stratigraphic unit.Fossil group
Close the synthesis for referring to all fossils of institute's symbiosis in certain stratigraphic horizon.
In step 3), the Strata Comparison the following steps are included:
A) Strata Comparison reference lamina is chosen；
More mouthfuls of standard wells are chosen, canonical profile is established, clear longitudinal direction overlying strata developmental sequence；
B) longitudinal approximant Strata Comparison: when carrying out the Strata Comparison between upper reference lamina, lower reference lamina, first from subscript
Will layer compares downwards, and comparison compares upwards to the first auxiliary sign layer, then from lower reference lamina, comparison to the second auxiliary sign layer；
And so on, from upper and lower both direction, to stratum middle section Step wise approximation, until completing between upper reference lamina, lower reference lamina
Strata Comparison；
C) the iterative contrast verification of plane: carrying out faults comparison with standard well for each well in the first periphery of standard well,
Then faults comparison is carried out between each well of first periphery, if comparing result is inconsistent, corrects first periphery
Each well and standard well comparing result, until it is described first periphery each well between comparing result it is consistent；With described first
Each well of periphery is standard well, and each well of the second periphery of adjustment is consistent with the comparing result of standard well, and so on, until research
Whole wells in area, which compare, to be completed.
Complicated structure area stratum crushing, drilled well stratum often lack, and the more complete well of drilling strata is few, because
This, needs to choose more mouthfuls of standard wells in research area, using the section of the different intervals of more mouthfuls of standard wells, establishes the standard in research area
Section, clear longitudinal direction overlying strata developmental sequence.
In step a), choosing Strata Comparison reference lamina includes:
1. establishing lithology combination feature, various particular lithologics (such as: oil shale, seam, salt cream according to developing features of strata
Layer, red beds, pyrite) and electrical relationship；
2. with rock core information, lithologic character is understood using rock core information, is further clarified lithology, is electrically mutually closed
System realizes and judges lithology with log；
3. choosing and being able to reflect deposition and variation of lithologic combination on longitudinal direction, Stable distritation in plane can track comparison, survey
Well curve has obvious characteristic, and stabilized zone easy to identify is as correlation marker layer.It is stable that thickness is chosen in section plane of sand shale
Pure shale, shale, oil shale are as reference lamina.
In step a), the selection principle of standard well are as follows: 1. straight well；2. coring well has systematic core analysis and well logging
Data；3. having completely or than more complete geologic section, lacuna phenomenon does not occur；4. the open hole well for having project complete is surveyed
Well data, the data including newest logging method；5. reference lamina lithology, electrical property feature understand.
Preferably, above-mentioned comprehensive stratum control methods further includes step 4): by strata division data scaling in seismic profile
On, can verifying seismic event be closed；If cannot be closed, return step 3) stratum comparing result is modified, until
Seismic event closure, determines the at different levels layers of position on stratum in studying.
In step 4), Strata Comparison and seismic interpretation are interpenetrated in Strata Comparison, has given full play to well-log information
The lateral traceable advantage of longitudinal resolution height and seismic data.In the unconspicuous area of reference lamina, well shake combines can be effective
Improve the accuracy of Strata Comparison.
Synthesis stratum control methods under complex geological condition of the invention fully utilizes well logging, well logging, earthquake and divides
Chemical examination data is analysed, the accuracy and precision of complex geological condition regional stratigraphic correlation are improved.
Detailed description of the invention
Fig. 1 is the seismic interpretation section studied in area；
Fig. 2 is 10 well interval transit times (DT)-depth relationship figure and crosses well 3-D seismics section；
Fig. 3 is 11 well interval transit times (DT)-depth relationship figure and crosses well 3-D seismics section；
Fig. 4 is 12 well interval transit times (DT)-depth relationship figure and crosses well 3-D seismics section；
Fig. 5 show 10 wells, 11 wells, 12 wells interval transit time catastrophe point the same axis of reflection is corresponded on seismic profile；
Fig. 6 is the well of 14 wells -18 Ed group-S2 sections of ES group Strata Comparison figure；
Fig. 7 is research area ES group S3 4Sub- section Strata Comparison reference lamina；
Fig. 8 is research area ES group S3 4Sub- section, S4 segment standard section；
Fig. 9 is " longitudinal approximant " Strata Comparison ideograph；
Figure 10 is " plane is iterative " Strata Comparison ideograph；
Figure 11 is the well of 12 wells -10 S3 4- S4 sections of Strata Comparison figure；
Figure 12 is that 12 wells, 21 wells, 20 wells and 10 wells connect well seismic interpretation section；
Figure 13 is the flow chart of the synthesis stratum control methods under complex geological condition of the invention；
Figure 14 is the individual-layer data comparison diagram of 12 wells.
Specific embodiment
Below using the Strata Comparison of a complex geologic conditions as embodiment, embodiments of the present invention are made furtherly
It is bright.
As shown in Figure 1, research area is located at the upthrow of a synsedimentary fault, which controls Cenozoic's Gu
The sedimentation for being closely.Area is studied there are two regional unconformities, one is unconformity between Cenozoic's Neogene System and Paleogene System
(NgGroup bottom), the other is unconformity (the ES group S between Cenozoic's Paleogene System and the Mesozoic group Triassic system4Section bottom).
Since research area undergoes more phase tectonic movements, along with Continental Facies Stratigraphy cross directional variations are fast, in the area Shi Gai Guantao group-
Stratum (N between raw boundarygGroup-ES group S4Section bottom) recognize always it is unclear.It is using under complex geological condition of the invention below
The control methods of synthesis stratum to stratum (N between Guantao group-Mesozoic groupgGroup-ES group S4Section bottom) the step of comparing:
1) the areal geology data where research on utilization area, clearly research area's stratum characteristic；
Region outcrop data and drilling data where research area can disclose and reflecting regional bed succession, basic
Stratum law of development and feature, these data can be used as the basic data of Strata Comparison；
2) interval transit time and the clear local unconformity face of seismic data are utilized；
As shown in figs 2-4, by the well-log information of well in analysis and research area, 10 wells of discovery, 11 wells and 12 wells are in NgGroup
Under there are an interval transit time catastrophe point, which does not have tomography in the corresponding position of seismic profile again, says
It is bright that there are local unconformities；
As shown in figure 5,10 wells, 11 wells and 12 wells in NgInterval transit time catastrophe point under group is demarcated in seismic profile
On, in terms of seismic wave groups corresponding relationship, which has corresponded to the same reflecting interface on seismic profile, shows the office
Portion's unconformity has certain distribution (as local unconformity face)；
3) it utilizes and arrives N on paleontologic analysis, log data and well-log information clearly local unconformity facegBetween group
Stratum is Ed group-ES group S2Section stratum to the stratum between the Mesozoic group is ES group S under local unconformity face3 4- S4 sections of ground
Layer, specifically includes the following contents:
N is arrived on 3.1 local unconformity facesgStratum between group is Ed group-S2 sections of ES group stratum
Area's paleontologic analysis: the Dongyings such as 12 wells see Zhang Juhe kirschner stonewort at 1820-2102 meters, Xin Dian Huaxing is situated between
Group fossil；14 wells see the ES group S1 segment marks such as Huimin red bean Jie, true star Jie in Leling, Chinese narrow orifice spiral shell in 2412-2575 meters of well sections
Will fossil；It is common that S2 sections of few tumor Kazakhstan stonewort, Huimin crown gear algae, pyriform kirschner stonewort etc. is seen in 2610-2805 meters of well sections
Fossil；15 2014-2230 meters of well well sections see graceful narrow orifice spiral shell, the big people collect red bean spiral shell, Chinese narrow orifice spiral shell, stretch the ES such as glass Jie
Group S1 segment mark fossil；18 wells see Xiao Zhuanmei star in 1736-1905 meters of well sections and are situated between, like the ES group S2 segment mark such as stonewort
Fossil；According to the analysis above to area's paleontologic analysis, the stratum arrived between Ng group on the area local unconformity face is Ed
Group-S2 sections of ES group stratum.
Area's well logging, well-log information: to the stratum between the group of Guantao on local unconformity face, upper part lithology is purplish red
Color, celadon, grey mud stone and gray post alternating layers are consistent with the lithologic character on area, the S1 sections of stratum of ES group, region；Its
Lower part lithology is aubergine mudstone and grey, brown sandstone alternating layers, is consistent with the lithologic character on area, the S2 sections of stratum, region,
And reference lamina-height of S2 sections of ES group of area development leads mud stone；It is analyzed according to the lithology above to the area stratum, electrical property feature, into
One step specifies that there are S1 sections-S2 sections stratum of ES group between Ng group on the area local unconformity face；According to the above comparison knot
Fruit is compared using well-log information with the well of adjoining area, is specified the bottom circle of S1 sections of ES group, S2 sections of ES group, is completed the area not
To the Strata Comparison (as shown in Figure 6) between the group of Guantao on integration face.
Under 3.2 local unconformity faces to the stratum between the Mesozoic group be ES group S3 4- S4 sections of stratum
Area's paleontologic analysis: 20 wells, 2882-3006 meters of well sections under local unconformity face see Bohaidina (0-
3) and Pediastrum (0-3)；Spore-pollen analysis is higher (54-82%) by subclass, and gymnospermy (20-44%) takes second place, fern
(0-4%) is minimum；It is analyzed according to paleontologic analysis, 2882-3006 meters of this section of stratum are S3-S4 sections of stratum of ES group；
Area's well logging, well-log information: to the stratum between the Mesozoic group under local unconformity face, middle part lithology is ash thereon
Color mud stone, grey matter siltstone, siltstone alternating layers, formation resistivity are in a series of needle patterns；Lower part lithology is aubergine mudstone, sand
Matter mud stone and aubergine, brown siltstone alternating layers, formation resistivity are lower.With area region ES group S3 4- S4 sections of stratum
Rock, electrical property feature are consistent, show under local unconformity face to the stratum between the Mesozoic group be ES group S3 4- S4 sections of stratum.
4) the ES group S under the local unconformity face that step 3.2 determines3 4- S4 sections of stratum, using well logging, well logging,
Shake data carries out fine Strata Comparison using " plane is iterative, longitudinal approximant " principle, specifies local unconformity face or less ES
Group S3 4- S4 sections of stratigraphic horizon, specifically includes the following contents:
1. choosing Strata Comparison reference lamina: choosing and be able to reflect deposition and variation of lithologic combination on longitudinal direction, stablize in plane
Distribution can track comparison, and log has obvious characteristic, and stabilized zone easy to identify is set to correlation marker layer；Fig. 7 is shown
Study area ES group S3 47 mud stone correlation marker layers of sub- section；
2. selection standard well, establishes canonical profile: according to research area's drilling well disclose strata condition, selected sedimentation compared with
Entirely, tomography is less and the canonical profile in area is studied in lithology, the typical well of electrical reference lamina, foundation；Fig. 8 show selection X4,
X6 well is ES group S3 4The standard well of sub- section establishes ES group S3 4The canonical profile of sub- section；Select X6, X8 and X10 well for ES group S4
The standard well of section, establishes S4 sections of ES group of canonical profile；
3. utilizing well logging, well-log information, using " plane is iterative, longitudinal approximant " principle, fine Strata Comparison is carried out,
Complete local unconformity face or less ES group S3 4- S4 sections of Strata Comparison work；
Longitudinal approximant Strata Comparison: when carrying out the Strata Comparison between upper reference lamina, lower reference lamina, first from upper mark
Layer comparison downwards, comparison compare upwards to the first auxiliary sign layer, then from lower reference lamina, comparison to the second auxiliary sign layer；With
This analogizes, from upper and lower both direction, to stratum middle section Step wise approximation, until completing between upper reference lamina, lower reference lamina
Strata Comparison；As shown in figure 9, X1 well and X2 well, which all bore, meets reference lamina 1 and reference lamina 2, carry out reference lamina 1 and reference lamina 2 it
Between Strata Comparison when, first from reference lamina 1 downwards compare, comparison arrive auxiliary sign layer 1；It is compared upwards from reference lamina 2 again, comparison
To auxiliary sign layer 2, to complete the Strata Comparison between X1 well and X2 well reference lamina 1 and reference lamina 2；
The iterative contrast verification of plane: by each well and standard well progress faults comparison in the first periphery of standard well, so
Faults comparison is carried out between each well of first periphery afterwards, if comparing result is inconsistent, corrects first periphery
The comparing result of each well and standard well, until the comparing result between each well of first periphery is consistent；Outside described first
Each well enclosed is standard well, and each well of the second periphery of adjustment is consistent with the comparing result of standard well, and so on, until research area
Interior whole wells, which compare, to be completed；
On the basis of standard well, it is unfolded around, the well with surrounding compares, and is closed by well comparison, by well, is repeatedly anti-
Strata Comparison is carried out again；As shown in Figure 10, using standard well as Starting Well, surrounding each well is compared with standard well respectively,
Then it is compared again between each well, sees whether the comparing result between each well is consistent, if the comparing result between each well is different
It causes, then each well is again respectively with second of comparison of standard well progress, and after the completion of second compares, it is right for the second time to carry out again between each well
Than seeing whether the comparing result between each well is consistent, if inconsistent, these wells are compared with standard well again, are so recycled, directly
It is consistent to the comparing result between each well；And then it using each well as standard well, is compared respectively with the well of surrounding, Zhi Daoyan
Studying carefully the well in area, all comparison is completed, and obtains the strata division data of well in research area.
Figure 11 is application " plane is iterative, longitudinal approximant " principle, completes research area ES group S3 4- S4 sections subtly
After layer comparison, the Strata Comparison figure of the well of 12 wells -10 of establishment, wherein ES group S3 4Sub- section has segmented 1 layer and 2 layers of two substratum again.
5) well shake combines, and Strata Comparison and seismic interpretation are be combined with each other in Strata Comparison, further increase stratum pair
The accuracy of ratio.
Figure 12 is the obtained ES group S of step 4)3 4After in-S4 sections of Strata Comparison result calibration to seismic profile, mistake
12 wells, 21 wells, 20 wells and 10 wells company's well seismic interpretation section, from seismic profile as can be seen that tracking seismic event
Closure, illustrates the obtained ES group S of step 4)3 4The layer position of-S4 sections of Strata Comparison is consistent.
By utilizing above step, the stratum (N between research area Guantao group-Mesozoic group is completedgGroup-S4 sections of ES group
Bottom) it compares, overall flow figure is as shown in figure 13.The Strata Comparison method specifies between research area Guantao group-Mesozoic group
Stratum (Ng group-S4 sections of ES group bottom) sequence solves the problems, such as that geologic structure is unclear for a long time in research area.
Figure 14 is 12 wells in above-described embodiment research area, uses lithologic character stratum method of comparison, well-log information method and Ben Fa respectively
The individual-layer data on stratum between the obtained Ng group of bright method-S4 sections of ES group.
By the result of Figure 14 it is found that although lithologic character stratum control methods has marked off Ed group stratum, but the ES group S1 lacked
To S3 3Caused by the stratum of sub- section is considered tomography, local unconformity is not identified.Well logs correlation method is directly Ng
It is S4 sections of stratum of ES group that stratum under group, which is all set to, had not both marked off Ed group-S2 sections of ES group stratum, and had not also known
It Chu not local unconformity.Method of the invention not only has identified local unconformity, but also comparison has understood Ng group-S4 sections of ES group
Stratum.
Claims (7)
1. the synthesis stratum control methods under a kind of complex geological condition, which comprises the following steps:
1) the local unconformity face in research area is determined using interval transit time and seismic data；
2) utilize extinct plants and animal, well logging and well-log information, determine local unconformity face with overlying strata and local unconformity face below
The group or section on stratum；
3) the standard well in group or section stratum and research area determined step 2) carries out Strata Comparison, obtains strata division number
According to.
2. the synthesis stratum control methods under complex geological condition as described in claim 1, which is characterized in that in step 1),
The position that local unconformity is determined according to the mutated site of interval transit time demarcates the catastrophe point of interval transit time in seismic profile
On, according to the corresponding relationship of seismic wave groups, determine the local unconformity face.
3. the synthesis stratum control methods under complex geological condition as described in claim 1, which is characterized in that in step 2),
By study area in paleontologic analysis and regional stratum index fossil and fossil assemblage compare, determine stratum group or
Section.
4. the synthesis stratum control methods under complex geological condition as described in claim 1, which is characterized in that in step 2),
According to well logging, the well-log information in research area, determine the research lithology on area stratum, electrical property feature, then with regional stratum feature phase
Comparison, determines the group or section on stratum.
5. such as the synthesis stratum control methods under the described in any item complex geological conditions of Claims 1 to 4, which is characterized in that
In step 3), the Strata Comparison the following steps are included:
A) Strata Comparison reference lamina is chosen；
More mouthfuls of standard wells are chosen, canonical profile is established, clear longitudinal direction overlying strata developmental sequence；
B) longitudinal approximant Strata Comparison: when carrying out the Strata Comparison between upper reference lamina, lower reference lamina, first from upper reference lamina
Comparison downwards, comparison compare upwards to the first auxiliary sign layer, then from lower reference lamina, comparison to the second auxiliary sign layer；With this
Analogize, from upper and lower both direction, to stratum middle section Step wise approximation, until completing the ground between upper reference lamina, lower reference lamina
Layer comparison；
C) the iterative contrast verification of plane: by each well and standard well progress faults comparison in the first periphery of standard well, then
Faults comparison is carried out between each well of first periphery, if comparing result is inconsistent, corrects each of first periphery
The comparing result of well and standard well, until the comparing result between each well of first periphery is consistent；With first periphery
Each well be standard well, adjustment second periphery each well it is consistent with the comparing result of standard well, and so on, until study area in
Whole wells compare complete.
6. the synthesis stratum control methods under complex geological condition as claimed in claim 5, which is characterized in that in step a),
It chooses and is able to reflect deposition and variation of lithologic combination on longitudinal direction, Stable distritation in plane can track comparison, and log has
Obvious characteristic, stabilized zone easy to identify is as correlation marker layer.
7. the synthesis stratum control methods under complex geological condition as described in claim 1, which is characterized in that further include step
4): by strata division data scaling on seismic profile, can verifying seismic event be closed；If cannot be closed, step is returned
It is rapid that 3) stratum comparing result is modified, until seismic event is closed, determine the at different levels layers of position on stratum in studying.
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Cited By (2)
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| CN113447989A (en) * | 2020-03-25 | 2021-09-28 | 中国石油天然气股份有限公司 | Device and method for judging and identifying original stratum direction of rock core |
| CN114428358A (en) * | 2021-09-13 | 2022-05-03 | 中国石油化工股份有限公司 | Isochronous stratigraphic division method based on geological-geophysical analysis |
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