CN110441814A - Seismic profile iteration flattening method for Deep Water Basins - Google Patents
Seismic profile iteration flattening method for Deep Water Basins Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 230000011218 segmentation Effects 0.000 claims abstract description 39
- 238000003325 tomography Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008021 deposition Effects 0.000 description 10
- 241000555887 Globigerina Species 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 208000035126 Facies Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- UZVHFVZFNXBMQJ-UHFFFAOYSA-N butalbital Chemical compound CC(C)CC1(CC=C)C(=O)NC(=O)NC1=O UZVHFVZFNXBMQJ-UHFFFAOYSA-N 0.000 description 1
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- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
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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
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Abstract
The invention discloses a kind of seismic profile iteration flattening methods for Deep Water Basins, comprising the following steps: S1, chooses seismic profile according to Geological Mode；S2, selected seismic profile is divided into multiple segmentations successively to connect；S3, first segmentation in, explain an auxiliary reference layer, even up the auxiliary reference layer；S4, layer is evened up in first segmentation interior newly-built one, evens up layer described in the parallel auxiliary reference layer explanation；S5, an auxiliary layers successively are explained in other adjacent segmentations and are evened up, parallel auxiliary layer update described in even up layer, so that the layer of evening up is extended to segmentation where the auxiliary layer；It is described to even up layer and extend segmentation to the end from first segmentation after completing the evening up of all segmentations；S6, even up it is described even up layer, the ancient landform after being restored deposits original shape.The present invention, which be segmented according to geologic feature, to even up, will repeatedly even up the final original shape sedimentary section of iteration effect superposition acquisition.
Description
Technical field
The present invention relates to seismic exploration technique field more particularly to a kind of seismic profile iteration layer drawings for Deep Water Basins
Quadratic method.
Background technique
The method of deposition prototype restoration is mainly flattening method at present, with base level of deposition or maximum marine flooding surface as reference
Benchmark is selected top, the bottom surface of research sequence, top surface is evened up, the top layer face evened up, and the sea (lake) when being primary deposit is flat
Face, the form of bottom surface are exactly the opposite ancient landform of SEQUENCE STRATIGRAPHIC deposition.The current above method has the disadvantage in that flattening
Method can only restore opposite ancient landform, be suitable for shallow water area, be not suitable for profundal zone undercompensation environment.
Summary of the invention
The technical problem to be solved in the present invention is that providing one kind for above-mentioned defect of the existing technology and being used for
The seismic profile iteration flattening method of Deep Water Basins.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of seismic profile for Deep Water Basins
Iteration flattening method, comprising the following steps:
S1, seismic profile is chosen according to Geological Mode；
S2, selected seismic profile is divided into multiple segmentations successively to connect；
S3, first segmentation in, explain an auxiliary reference layer, even up the auxiliary reference layer；
S4, layer is evened up in first segmentation interior newly-built one, evens up layer described in the parallel auxiliary reference layer explanation；
S5, an auxiliary layer successively is explained in other adjacent segmentations and is evened up, even up layer described in parallel auxiliary layer update,
The layer of evening up is set to extend to segmentation where the auxiliary layer；
It is described to even up layer and extend segmentation to the end from first segmentation after completing the evening up of all segmentations；
S6, even up it is described even up layer, the ancient landform after being restored deposits original shape.
Preferably, in step S1, the seismic profile intercepts along source direction in advance and avoids tomography.
Preferably, in step S4, the top evened up layer and be located at the auxiliary reference layer.
Preferably, in step S5, the top evened up layer and be located at the auxiliary layer.
Preferably, in step S2, the seismic profile is divided into three sequentially connected segmentations, respectively continental shelf, Lu Po
With basin bottom；
In step S3, in continental shelf, explain that continental shelf topset as auxiliary reference layer, evens up continental shelf topset；
In step S4, layer is evened up in the top of the continental shelf topset newly-built one, layer is evened up in parallel continental shelf topset explanation；
In step S5, an auxiliary layer is successively explained in Lu Po and basin bottom and is evened up, even up described in parallel auxiliary layer update
Layer makes the layer of evening up extend to segmentation where the auxiliary layer.
Preferably, step S5 includes:
S5.1, in Lu Po, explain Lu Po bottomset as auxiliary layer, even up Lu Po bottomset；
S5.2, the parallel Lu Po bottomset even up layer described in updating, and make described to even up layer and extend to the Lu Po；
S5.3, in basin bottom, explain basin bottom bottomset as auxiliary layer, even up basin bottom bottomset；
S5.4, according to basin bottom bottomset update described in even up layer, make described to even up layer and extend to the basin bottom.
Preferably, in step S5.1, the both ends of the Lu Po bottomset extend respectively to the Lu Po and basin bottom.
Preferably, described to even up layer according to it to the basin bottom according to the gradient of basin bottom bottomset in step S5.4
Extending direction explain 1 ° -2 ° upwards.
Preferably, in step S5, the Lu Po bottomset, basin bottom bottomset are respectively positioned on the lower section for evening up layer.
Preferably, in the seismic profile, width shared by the Lu Po is less than the width of the continental shelf and basin bottom.
Beneficial effects of the present invention: it is different from the flattening method that tradition selects single sequence interface, according to geologic feature
It carries out segmentation to even up, will repeatedly even up the final original shape sedimentary section of iteration effect superposition acquisition, has fully considered ancient landform deposition
The geologic changes factor such as form and datum level establishes good data base for SEDIMENTARY ENVIRONMENT and type of sedimentary facies research.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the flow chart of the seismic profile iteration flattening method for Deep Water Basins of one embodiment of the invention；
Fig. 2 to Figure 10 is the process of the seismic profile iteration flattening method for Deep Water Basins of one embodiment of the invention
Schematic diagram.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
In conjunction with shown in Fig. 1-10, the seismic profile iteration flattening method for Deep Water Basins of one embodiment of the invention,
It can comprise the following steps that
S1, seismic profile is chosen according to Geological Mode.
Seismic profile is to intercept in advance along source direction, and when interception avoids tomography, it is ensured that seismic profile has locating for it
The typical reliable sedimentary information in region evens up ancient landform deposition original shape recovery for successive iterations and establishes data base.
S2, selected seismic profile is segmented.
It evens up for the ease of successive iterations, the seismic profile is segmented according to deposition characteristics difference.In the present embodiment
In, according to typical Deep-water Sediments, it is (as shown in Figure 1 that its seismic profile is divided into continental shelf 10,30 3 sections of Lu Po 20 and basin bottom
The region that three dotted line frames are defined).According to connection direction, wherein first segment is continental shelf 10, and second segment is Lu Po 20, third section
For basin bottom 30.Width shared by Lu Po 20 is less than the width of continental shelf 10 and basin bottom 30.
On the seismic profile of typical Deep-water Sediments, it is flat on interface that the continental shelf section of first segment, which is the topset of deposition,
Row reflects, and is oblique reflection under interface；The Lu Po section of second segment is the foreset bed of deposition, is one group of oblique reflection, angle one
As about 2-5 °, this group of oblique reflection top bottom respectively correspond stronger seismic reflection；The basin bottom Duan Weichen of third section
Long-pending bottomset is reflected in parallel on interface, is also reflected in parallel under interface.
S3, first segmentation in, explain an auxiliary reference layer, even up auxiliary reference layer.
Specifically, it is divided into sequentially connected continental shelf 10, Lu Po 20 and the segmentation of 30 3, basin bottom in conjunction with above-mentioned seismic profile, the
One is segmented into continental shelf 10.In conjunction with Fig. 2,3, in continental shelf 10, explain continental shelf topset 11 (shown in dotted line 11) as auxiliary ginseng
Examine layer；Even up continental shelf topset 11.
S4, layer is evened up in first segmentation interior newly-built one, layer is evened up in parallel auxiliary reference layer explanation.It evens up layer and is located at auxiliary
The top of reference layer.
Specifically, as shown in figure 3, in the present embodiment, being created in continental shelf 10 and evening up layer 40 (shown in dotted line 40), in parallel
Layer 40 is evened up in the explanation of continental shelf topset 11.This evens up the top that layer 40 is located at continental shelf topset 11 in parallel, and the length extended is temporary
When be only positioned in 10 range of continental shelf.
S5, an auxiliary layer successively is explained in other adjacent segmentations and is evened up, layer is evened up in parallel auxiliary layer update, makes to draw
Leveling extends to the segmentation where auxiliary layer；Even up the top that layer is located at auxiliary layer.
After completing the evening up of all segmentations, layer is evened up from first segmentation and extends segmentation to the end, formation is finally evened up
Layer.
In the present embodiment, an auxiliary layer successively being explained in Lu Po 20 and basin bottom 30 and is evened up, parallel auxiliary layer, which updates, to be drawn
Leveling 40 makes to even up layer 40 and extends to segmentation where auxiliary layer.
Specifically, step S5 includes:
S5.1, in Lu Po 20, explain Lu Po bottomset 21 (shown in dotted line 21) be used as auxiliary layer, even up Lu Po bottomset
21, as shown in Fig. 4 to Fig. 5.
Wherein, the both ends of Lu Po bottomset 21 extend respectively to Lu Po 10 and basin bottom 20, i.e., coherent seismic profile as indicated at 3
Whole length.After Lu Po bottomset 21 is evened up, continental shelf topset 11 in continental shelf 10 and layer 40 is evened up also with from shown in Fig. 4
Linearly become curve-like shown in fig. 5.
Layer 40 is evened up in S5.2, the update of parallel Lu Po bottomset 21, is made to even up layer 40 and is extended to Lu Po 20, as shown in Figure 6.
Lu Po 20 is extended to from continental shelf 10 as shown in fig. 6, evening up layer 40, evens up the segmentation base of layer 40 being located in Lu Po 20
This is parallel with Lu Po bottomset 21.
S5.3, in basin bottom 30, explain basin bottom bottomset 31 (in Fig. 7 shown in dotted line 31) be used as auxiliary layer；Even up basin bottom
Bottomset 31, as shown in Figure 8.
In conjunction with Fig. 7,8, after basin bottom bottomset 31 is evened up, continental shelf topset 11 and layer 40 is evened up also with shown in Fig. 7
More gentle shape becomes more inclined state shown in Fig. 8, and Lu Po bottomset 21 linearly becomes figure with shown in Fig. 7
Curve-like shown in 8.
S5.4, layer 40 is evened up according to the update of basin bottom bottomset 31, makes to even up layer 40 and extends to basin bottom 30, as shown in figure 9, from
And it evens up layer 40 and extends to basin bottom 30, overall coherence continental shelf 10, Lu Po 20 and basin bottom 30 from Lu Po 20.
Specifically, layer 40 is evened up according to the update of the gradient of basin bottom bottomset 31.In actual basin bottom 30, general basin bottom bottom
The gradient of lamination 31 is at 1-2 ° or so, so explaining 1- upwards according to the extending direction for evening up layer 40 when layer 40 is evened up in update
2 °, i.e., as shown in Figure 9 from left to right explains 1-2 ° upwards.
S6, layer is evened up, positioned at auxiliary reference layer, auxiliary layer evened up below layer etc. also with variation, be restored
Ancient landform afterwards deposits original shape.
As shown in Figure 10, layer 40 will be evened up to even up, forms horizontality.When evening up layer 40 and being evened up, it is located under it
Continental shelf topset 11, Lu Po bottomset 21 and the basin bottom bottomset 31 of side are also with being flattened, to complete changing for seismic profile
For flattening, the ancient landform after being restored deposits original shape.
The ancient landform deposition original shape obtained by the method for the invention, can carry out line drawing method to find reservoir.
Through the invention in the application of Deep Water Basins, it is able to solve such as the main hollow regional sandstone development containing globigerina point in east of white clouds
Cloth is unclear, based on Seismic reflection character identification, conventional flattening method cannot restore deposition original under difficult, deep water undercompensation environment
The problems such as type, and then determine the deposit development mode of set calcareous sandstone containing globigerina and develop boundary from clear its, it is subsequent mesh
Mark evaluation Favorable Reservoir prediction, which provides, favorably to be supported, exploration progress is pushed.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of seismic profile iteration flattening method for Deep Water Basins, which comprises the following steps:
S1, seismic profile is chosen according to Geological Mode；
S2, selected seismic profile is divided into multiple segmentations successively to connect；
S3, first segmentation in, explain an auxiliary reference layer, even up the auxiliary reference layer；
S4, layer is evened up in first segmentation interior newly-built one, evens up layer described in the parallel auxiliary reference layer explanation；
S5, an auxiliary layer successively is explained in other adjacent segmentations and is evened up, even up layer described in parallel auxiliary layer update, make institute
It states and evens up layer and extend to segmentation where the auxiliary layer；
It is described to even up layer and extend segmentation to the end from first segmentation after completing the evening up of all segmentations；
S6, even up it is described even up layer, the ancient landform after being restored deposits original shape.
2. the seismic profile iteration flattening method according to claim 1 for Deep Water Basins, which is characterized in that step
In S1, the seismic profile intercepts along source direction in advance and avoids tomography.
3. the seismic profile iteration flattening method according to claim 1 for Deep Water Basins, which is characterized in that step
In S4, the top evened up layer and be located at the auxiliary reference layer.
4. the seismic profile iteration flattening method according to claim 3 for Deep Water Basins, which is characterized in that step
In S5, the top evened up layer and be located at the auxiliary layer.
5. the seismic profile iteration flattening method according to claim 1-4 for Deep Water Basins, feature
It is, in step S2, the seismic profile is divided into three sequentially connected segmentations, respectively continental shelf, Lu Po and basin bottom；
In step S3, in continental shelf, explain that continental shelf topset as auxiliary reference layer, evens up continental shelf topset；
In step S4, layer is evened up in the top of the continental shelf topset newly-built one, layer is evened up in parallel continental shelf topset explanation；
In step S5, an auxiliary layer is successively explained in Lu Po and basin bottom and is evened up, even up layer described in parallel auxiliary layer update, make
The layer of evening up extends to segmentation where the auxiliary layer.
6. the seismic profile iteration flattening method according to claim 5 for Deep Water Basins, which is characterized in that step
S5 includes:
S5.1, in Lu Po, explain Lu Po bottomset as auxiliary layer, even up Lu Po bottomset；
S5.2, the parallel Lu Po bottomset even up layer described in updating, and make described to even up layer and extend to the Lu Po；
S5.3, in basin bottom, explain basin bottom bottomset as auxiliary layer, even up basin bottom bottomset；
S5.4, according to basin bottom bottomset update described in even up layer, make described to even up layer and extend to the basin bottom.
7. the seismic profile iteration flattening method according to claim 6 for Deep Water Basins, which is characterized in that step
In S5.1, the both ends of the Lu Po bottomset extend respectively to the Lu Po and basin bottom.
8. the seismic profile iteration flattening method according to claim 6 for Deep Water Basins, which is characterized in that step
It is described to even up layer and explained upwards according to it to the extending direction at the basin bottom according to the gradient of basin bottom bottomset in S5.4
1°-2°。
9. the seismic profile iteration flattening method according to claim 6 for Deep Water Basins, which is characterized in that step
In S5, the Lu Po bottomset, basin bottom bottomset are respectively positioned on the lower section for evening up layer.
10. the seismic profile iteration flattening method according to claim 5 for Deep Water Basins, which is characterized in that In
In the seismic profile, width shared by the Lu Po is less than the width of the continental shelf and basin bottom.
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