CN109425898A - A method of utilizing slice, the identification tomography that vertically and horizontally develops of section - Google Patents
A method of utilizing slice, the identification tomography that vertically and horizontally develops of section Download PDFInfo
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- CN109425898A CN109425898A CN201710775925.7A CN201710775925A CN109425898A CN 109425898 A CN109425898 A CN 109425898A CN 201710775925 A CN201710775925 A CN 201710775925A CN 109425898 A CN109425898 A CN 109425898A
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- 238000000034 method Methods 0.000 title claims abstract description 27
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000013508 migration Methods 0.000 claims abstract description 4
- 230000005012 migration Effects 0.000 claims abstract description 4
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- 238000010276 construction Methods 0.000 abstract description 7
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/30—Analysis
- G01V1/306—Analysis for determining physical properties of the subsurface, e.g. impedance, porosity or attenuation profiles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/30—Analysis
- G01V1/301—Analysis for determining seismic cross-sections or geostructures
- G01V1/302—Analysis for determining seismic cross-sections or geostructures in 3D data cubes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/62—Physical property of subsurface
- G01V2210/624—Reservoir parameters
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Abstract
The present invention relates to a kind of methods using slice, the identification tomography that vertically and horizontally develops of section, this method comprises: being sliced according to the seismic data Production Time that pre-stack time migration is handled, vertical evolution explanation is carried out to the isochronous surface of interval of interest, determines the development interval of tomography, the reliable parts in plane trend and meet relationship；Two tomographies are encountered to intersect and the part of meet ambiguity Chu, it then will be mutually sent to after intersection from tomography in the range of becoming a tomography, the section of vertical fault trend is continuously browsed, the variation of turn-off and co-hade on combination well, lateral develop for carrying out tomography is explained；Tomography is identified in conjunction with the variation of the disconnection layer position of tomography, turn-off size and tendency, the final vertically and horizontally variation and syntagmatic for determining tomography.It is more acurrate that the application of this method explains single breakpoint, and vertically and horizontally meet relationship is more reasonable for tomography, and construction looks are more lower practical, can the small Fault-block trap of effective execution, provide foundation for In Oil Field Exploration And Development well site deployment.
Description
Technical field
The invention belongs to field of geophysical exploration, and in particular to a kind of vertically and horizontally evolution identification using slice, section
The method of tomography.
Background technique
Exploration and development for complicated structure oil reservoir, reasonable, accurate achievement structural map are deployment probing discovery oil reservoirs, oil
The basis of oil water relation is got in hiding evaluation clear.For complicated structure area, fault interpretation is the key that seismic data interpretation, and breakpoint is known
Other degree of reliability and combined reasonability directly affect the fulfilling degree of construction.Complicated stress forms complicated construction
Looks, so that fault strike is different, scale difference is obvious, and meet relationship is complicated, and therefore, in seismic interpretation, integrated application is each
Technological means is planted to identify that tomography seems most important.
Authorization Notice No. is that the patent of CN103941287B discloses a kind of quick three-dimensional tomography solution based on horizontal navigation
Method is released, method includes the following steps: carrying out the explanatory processing of tomography reinforcement to seismic data, obtains seismic data cube；
The isochronous surface that interval of interest reflection fault plane Distribution Characteristics are extracted on seismic data cube, as the flat of fault interpretation
Face navigation slice；A tomography is chosen on horizontal navigation slice；It is being drawn up seismic profile perpendicular to fault strike side,
The Interpretation of profile of this tomography is completed at the subpoint of the tomography section；The navigation plane of selected tomography is explained and extracted
Seismic profile on tomography interpretation results gridding processing, and be projected on another seismic profile newly extracted；Disconnected
Under the navigation directions that layer plane is explained, cutd open along gradually rolling to extract seismic profile and complete the earthquake perpendicular to fault strike direction
The fault interpretation in face completes the explanation of all seismic profiles of this tomography；It repeats the above steps, until it is all to complete the whole district
Fault interpretation.
During explaining tomography using three dimensional seismic data in the past, the browsing time is sliced first, understands substantially walking for tomography
To, then by " point ", " line ", " face ", " body " is comprehensive completes fault interpretation, combine earthquake to complete using individual well point drilling well layering
The explanation of single-point is completed to explain on line, the explanation of fault plane is completed by multi-thread explanation, in this base using single seismic profile
On plinth, the plane combination of tomography is carried out according to nearby principle.In simple structure, the place of tomography agensis, this static interpreter side
Method can satisfy the demand of structure interpretation.
In the case where east China garden basin construction is broken, mature fault, degree of prospecting are high, be easy to find, face
Product it is big, by the structural trap of one or two faults control all have been found that it is remaining be some breakpoints identifications it is difficult, several it is disconnected
Layer meet relationship is complicated, area is small, trap by 2-3 faults control, and the key of these complicated structure trap identifications is exactly
Reasonable, the Fine structural interpretation of tomography, the demand of fine granularing scalability is no longer satisfied using steady-state solution interpretation of the law.
Summary of the invention
The purpose of the present invention is to provide a kind of methods using slice, the identification tomography that vertically and horizontally develops of section, thus
Existing steady-state solution interpretation of the law is solved to the deficiency of complicated structure trap identification.
To achieve the above object, the technical scheme adopted by the invention is that:
A method of utilizing slice, the identification tomography that vertically and horizontally develops of section, comprising the following steps:
1) it is sliced according to the seismic data Production Time that pre-stack time migration is handled, the isochronous surface of interval of interest is carried out
Vertical evolution is explained, determines development interval, the reliable parts in plane trend and meet relationship of tomography；
2) it encounters two tomographies to intersect and the part of meet ambiguity Chu, continuously browses the section of vertical fault trend,
Lateral develop for carrying out tomography is explained；
3) time of return is sliced, and whether the disconnected body occurrence of same observed between two tomographies is consistent, is construed as one
Whether the turn-off on tomography is presented the small regularity variation in both ends broad in the middle；Such as it is unsatisfactory for, then return step 2) to the phase of tomography
Part is handed over to be modified explanation, until meeting condition；
4) tomography is identified in conjunction with the variation of the disconnection layer position of tomography, turn-off size and tendency.
The present invention using slice, the identification tomography that vertically and horizontally develops of section method, by multiple isochronous surfaces, a plurality of
Shake section carries out orderly vertically and horizontally evolution to identify the plane combination relationship of tomography, and the trailing of faults arrives drilling for nothing again from scratch
Change conversion process, according to tomography longitudinal direction development time, lateral turn-off size, change of pitch angle situation will intersect together two
The cutting relationship of tomography is made clear, and the planar distribution of fracture system is cleared, and achievees the purpose that fine fault interpretation.
Step 1) is to explain the reliable parts of every tomography, passes through subsequent step 2 to unreliable part)~step
4) it is handled.
In step 2), described continuously browse carries out in the range of becoming a tomography after tomography will mutually be sent to intersection.
In lateral evolution interpretation process, the variation of turn-off and co-hade on combination well.
Step 2) is to be germinated in layer position and plane in beginning breaking for every tomography of serial section to will be whole
Position only.
In step 3), same breaks, and i.e. the part of tomography, the attitude of stratum for the body that can be broken by evaluation same be not body
The no consistent reasonability to verify explanation.
In step 4), the identification tomography is between the longitudinal disconnection layer position for determining tomography, transverse extent and tomography
Syntagmatic.
The above-mentioned method using slice, the identification tomography that vertically and horizontally develops of section, further includes step 5): repetition step 2)~
Step 4), until to be sliced the body lineups occurrence of breaking of upper same consistent for the whole district, different masses, which break between body, has tomography to separate, cross-section diagram
Upper isopleth is not mutated, and section top broken-point is reliable, and the turn-off size on well of crossing for being construed to a tomography meets both ends broad in the middle
Small changing rule.
It is more acurrate that the application of this method explains single breakpoint, and vertically and horizontally meet relationship is more reasonable for tomography, and construction looks are more
Practical under adding hand to hand, the small Fault-block trap of effective execution provides foundation for In Oil Field Exploration And Development well site deployment.
Detailed description of the invention
Fig. 1 is isochronous surface and profile position relational graph；
Fig. 2 is the slice map of F1, F2 tomography before implementing；
Fig. 3 is the isochronous surface of embodiment from shallowly to deep evolution diagram；
Fig. 4 is the north-south seismic profile of embodiment from west to eastern evolution diagram；
Fig. 5 is F1, F2 tomography section meet relational graph of embodiment；
Fig. 6 is certain oil field isochronous surface result map of embodiment；
Fig. 7 is any line of closely parallel F1, F2 fault strike in certain oil field of embodiment.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawings and examples.In embodiment isochronous surface with
Profile position relational graph is as shown in Figure 1.
Embodiment
The method using slice, the identification tomography that vertically and horizontally develops of section of the present embodiment, is applied to east China old area
Complicated certain oil field of garden basin construction, comprising the following steps:
1) it is sliced according to the seismic data Production Time that pre-stack time migration is handled, the isochronous surface of interval of interest is carried out
It is longitudinally continuous viewing, it can be seen that dominant fault is substantially in east northeast to spread, while the inclination angle of adjacent tomography is not of uniform size, by Fig. 2
Target fault in slice names F1 and F2 tomography respectively, and the reliable parts for being sliced interrupting layer to four explain, and hands over
It does not explain first the dashed circle part for cutting ambiguity Chu；
2) the case where meet ambiguity Chu, break from the starting of F2 tomography to F1 for the intersection of F1 and No. F2 two tomography
In the range of layer terminates, name is gone to explain F1 and No. F2 from the rule variation of the turn-off size on EW19, Ch46, Ch16, Ch4 well
Tomography；Continuously browse these sections in order again, the regularity variation of turn-off and co-hade, carries out the cross of tomography on combination well
It is explained to developing；
3) time of return is sliced, and whether observe the body occurrence of breaking of same between two tomographies consistent, different masses break body it
Between whether there is tomography to separate；Such as it is unsatisfactory for, then return step 2) explanation is modified to the intersection of tomography, until meeting item
Part；
4) finally in conjunction with the disconnection layer position of tomography, turn-off size and tendency variation come rationally, accurately identify tomography, most
Eventually determine tomography vertically and horizontally variation and syntagmatic, from the slice 1-4 of Fig. 3 can be seen that F1, No. F2 from shallow-layer to deep layer by
The change procedure that the southeast northwestwards drifts about；It can be seen that F1 is up to fade away by turn-off from the ln1-ln4 of Fig. 4, F2 is by rigid
It germinates to lineups bad break relationship consistency on the maximum evolution process of turn-off and section, and the change with turn-off size on well excessively
Change process is consistent, and interpretation is the result is that reliable, reasonable；
5) step 2)~step 4) is repeated, until the disconnected body lineups of same produce on whole district's isochronous surface (as shown in Figure 5)
Shape is consistent, has tomography to separate between the disconnected body of different masses；F1, F2 tomography meet relationship are obvious in cross-section diagram (as shown in Figure 6), etc.
Value line is not mutated；And respectively there are two breakpoints on two mouthfuls of wells of Ch46, Ch16 of meet part, substantially move towards along F1, F2 tomography
Each well point turn-off size on well profile (as shown in Figure 7) of crossing meet the small changing rule in both ends broad in the middle, and well top broken-point is all
It makes full use of.
The present invention carries out dynamic evolution explanation by the vertically and horizontally spread to slice, tomography, has fully considered a tomography
The consistent feature of intracorporal lineups that the rule of upper turn-off changes and same breaks, is applied to east old area oil field
Area, rationally, accurately features area construction looks, and new discovery complicated structure trap 14 is established solid for lower step exploration deployment
Basis.
Claims (5)
1. a kind of method using slice, the identification tomography that vertically and horizontally develops of section, which comprises the following steps:
1) it is sliced, the isochronous surface of interval of interest is carried out longitudinal according to the seismic data Production Time that pre-stack time migration is handled
Develop and explain, determines development interval, the reliable parts in plane trend and meet relationship of tomography；
2) it encounters two tomographies to intersect and the part of meet ambiguity Chu, continuously browses the section of vertical fault trend, carry out
Lateral develop of tomography is explained；
3) time of return is sliced, and whether the disconnected body occurrence of same observed between two tomographies is consistent, is construed as a tomography
On turn-off whether present both ends broad in the middle it is small regularity variation；Such as it is unsatisfactory for, then return step 2) to the cross-shaped portion of tomography
Divide and be modified explanation, until meeting condition；
4) tomography is identified in conjunction with the variation of the disconnection layer position of tomography, turn-off size and tendency.
2. the method as described in claim 1 using slice, the identification tomography that vertically and horizontally develops of section, which is characterized in that step
It is rapid 2) in, it is described continuously browse tomography will mutually be sent to intersection after become a tomography in the range of carry out.
3. the method as described in claim 1 using slice, the identification tomography that vertically and horizontally develops of section, which is characterized in that step
It is rapid 2) in, in lateral evolution interpretation process, the variation of turn-off and co-hade on combination well.
4. the method as described in claim 1 using slice, the identification tomography that vertically and horizontally develops of section, which is characterized in that step
It is rapid 4) in, the identification tomography be the syntagmatic between determination longitudinal disconnection layer position of tomography, transverse extent and tomography.
5. special such as the described in any item methods using slice, the identification tomography that vertically and horizontally develops of section of Claims 1 to 4
Sign is, further includes step 5): step 2)~step 4) is repeated, until the whole district is sliced the disconnected body lineups occurrence one of upper same
It causes, there is tomography to separate between the disconnected body of different masses, isopleth is not mutated in cross-section diagram, and section top broken-point is reliable, is construed to one
The turn-off size on well of crossing of tomography meets the small changing rule in both ends broad in the middle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710719707 | 2017-08-21 | ||
| CN2017107197071 | 2017-08-21 |
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| CN109425898B CN109425898B (en) | 2020-07-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830564A (en) * | 2019-04-18 | 2020-10-27 | 中国石油天然气股份有限公司 | Method and device for identifying fault |
| CN112255676A (en) * | 2020-10-15 | 2021-01-22 | 中国海洋石油集团有限公司 | Method for quantitatively searching favorable trap of conjugate walk-slip fault conjugate zone with opposite rotation directions |
| CN112505768A (en) * | 2020-11-24 | 2021-03-16 | 中国煤炭地质总局地球物理勘探研究院 | Coal field high-density three-dimensional seismic depth domain fault interpretation method |
| CN113625339A (en) * | 2020-05-08 | 2021-11-09 | 中国石油天然气集团有限公司 | Method and device for determining thickness of stratum of normal fault |
| CN114169121A (en) * | 2020-09-11 | 2022-03-11 | 中国石油化工股份有限公司 | Method for quantitatively determining fault evolution time by combining geometry and chronology |
| CN118244354A (en) * | 2024-03-25 | 2024-06-25 | 中国地质大学（北京） | Method for judging main section of deep-ultra-deep walk-slip fracture zone |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830564A (en) * | 2019-04-18 | 2020-10-27 | 中国石油天然气股份有限公司 | Method and device for identifying fault |
| CN113625339A (en) * | 2020-05-08 | 2021-11-09 | 中国石油天然气集团有限公司 | Method and device for determining thickness of stratum of normal fault |
| CN114169121A (en) * | 2020-09-11 | 2022-03-11 | 中国石油化工股份有限公司 | Method for quantitatively determining fault evolution time by combining geometry and chronology |
| CN112255676A (en) * | 2020-10-15 | 2021-01-22 | 中国海洋石油集团有限公司 | Method for quantitatively searching favorable trap of conjugate walk-slip fault conjugate zone with opposite rotation directions |
| CN112255676B (en) * | 2020-10-15 | 2023-12-19 | 中国海洋石油集团有限公司 | Method for quantitatively searching beneficial trap in conjugate zone of conjugate sliding fault with opposite rotation directions |
| CN112505768A (en) * | 2020-11-24 | 2021-03-16 | 中国煤炭地质总局地球物理勘探研究院 | Coal field high-density three-dimensional seismic depth domain fault interpretation method |
| CN118244354A (en) * | 2024-03-25 | 2024-06-25 | 中国地质大学（北京） | Method for judging main section of deep-ultra-deep walk-slip fracture zone |
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