CN108267780A - With the method for sandstone percent content isogram constraint shallow-layer meandering stream channel boundary - Google Patents
With the method for sandstone percent content isogram constraint shallow-layer meandering stream channel boundary Download PDFInfo
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- CN108267780A CN108267780A CN201611270719.2A CN201611270719A CN108267780A CN 108267780 A CN108267780 A CN 108267780A CN 201611270719 A CN201611270719 A CN 201611270719A CN 108267780 A CN108267780 A CN 108267780A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 239000004576 sand Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
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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
- G01V1/307—Analysis for determining seismic attributes, e.g. amplitude, instantaneous phase or frequency, reflection strength or polarity
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Abstract
The present invention provides a kind of method with sandstone percent content isogram constraint shallow-layer meandering stream channel boundary, this is included with the method that sandstone percent content isogram constrains shallow-layer meandering stream channel boundary:Step 1, research area's Strata Comparison screen work is established;Step 2, the main force of research area sand group seismic horizon is explained;Step 3, extraction research area main force's sand group river attribute;Step 4, establishment research area main layer position Channel sandstone percentage composition isogram;Step 5, seismic properties river is folded into sandstone percent content figure, the boundary in river is portrayed using sandstone percent content figure.The method with sandstone percent content isogram constraint shallow-layer meandering stream channel boundary combines sandstone percent content isogram and seismic properties graph, i.e., quick and accurate portray channel boundary.
Description
Technical field
The present invention relates to oil exploration technology fields, especially relate to a kind of sandstone percent content isogram constraint
The method of shallow-layer meandering stream channel boundary.
Background technology
With the raising of Songliao basin, the difficulty of exploration is increasing, and this requires the work of oil-gas exploration is more next
It is finer.The oil-gas exploration of shallow-layer river channel sand becomes exploration emphasis in multiple areas.According to presently found shallow-layer channel sand
From the point of view of oil pool analysis, to construct lithologic deposit as main Oil Reservoir Types.Shallow-layer river channel sand tectonic sliver is its source property
Oil reservoir, oil gas pass through the upward transporting of tomography.The configuration relation of channel boundary and tomography controls the enrichment of river oil gas, therefore,
It is also most important work that the fine boundary structure for accurately portraying river, which is the most basic of shallow-layer river channel sand oil-gas exploration,.Thus
We have invented a kind of methods with sandstone percent content isogram constraint shallow-layer meandering stream channel boundary, solve more than skill
Art problem.
Invention content
Sandstone percent content is used the object of the present invention is to provide a kind of boundary that can quickly and effectively depict river
The method that isogram constrains shallow-layer meandering stream channel boundary.
The purpose of the present invention can be achieved by the following technical measures:It is bent with sandstone percent content isogram constraint shallow-layer
The method of river channel boundary is flowed, this is included with the method that sandstone percent content isogram constrains shallow-layer meandering stream channel boundary:
Step 1, research area's Strata Comparison screen work is established;Step 2, the main force of research area sand group seismic horizon is explained;Step 3, extraction research
The main force of area sand group river attribute;Step 4, establishment research area main layer position Channel sandstone percentage composition isogram;Step 5, will
Seismic properties river is folded into sandstone percent content figure, and the boundary in river is portrayed using sandstone percent content figure.
The purpose of the present invention can be also achieved by the following technical measures:
In step 1, sequence dividing is carried out to individual well using drilling well, well-log information identification sequence interface;It is divided in individual well
On the basis of, sequence stratigraphic framework is established using lithology, electrical property feature and seismic data, clearly studies the floor of the main force of area sand group
Position.
In step 2, full 3 D stereo explanation is carried out to the river floor position of the main force of research area sand group using 3D data volume.
In step 3, in seismic work station, according to the explanation results of seismic horizon, amplitude is chosen according to timing window is set
The river attribute of generic attribute extraction main force sand group, makes river channel sand attributed graph.
In step 4, the thickness value on statistics major channal stratum and in its formation thickness river channel sand thickness value, take
The radiometer of two value calculates the sandstone percent content value on the set stratum;According to attributes extraction obtain the spreading direction in river with
And channel boundary substantially, the sandstone percent content isogram in river is sketched out using the sandstone percent content value of individual well.
In steps of 5, it is labeled in the form of block diagram, seismic properties river is folded into sandstone percent content figure
In, the boundary in river is portrayed using sandstone percent content figure.
The method with sandstone percent content isogram constraint shallow-layer meandering stream channel boundary in the present invention, by sandstone hundred
Point content isogram combines with seismic properties graph, i.e., it is quick and it is accurate portray channel boundary, should
Method effectively solves the problems, such as channel boundary to be caused to portray inaccuracy since seismic data resolution is not high.
Description of the drawings
Fig. 1 is a tool of the method that shallow-layer meandering stream channel boundary is constrained with sandstone percent content isogram of the present invention
The flow chart of body embodiment;
Fig. 2 is the schematic diagram of sequence Strata Comparison screen work sectional view in a specific embodiment of the invention;
Fig. 3 is the schematic diagram explained in the specific embodiment of the present invention by seismic profile layer position;
Fig. 4 is the schematic diagram of river attribute plan view in a specific embodiment of the invention;
Fig. 5 is the schematic diagram of sandstone percent content isogram in a specific embodiment of the invention;
Fig. 6 is the schematic diagram that channel boundary portrays plan view in a specific embodiment of the invention.
Specific embodiment
For enable the present invention above and other objects, features and advantages be clearer and more comprehensible, it is cited below particularly go out preferable implementation
Example, and coordinate shown in attached drawing, it is described in detail below.
As shown in FIG. 1, FIG. 1 is present invention sandstone percent content isograms to constrain shallow-layer meandering stream channel boundary
The flow chart of method.
In step 101, research area's Strata Comparison screen work is established.Identify sequence interface to individual well using drilling well, well-log information
Carry out sequence dividing;On the basis of individual well division, sequence stratigraphic framework is established using lithology, electrical property feature and seismic data,
The clearly floor position of the main force of research area sand group, as shown in Figure 2.
In step 102, the main force of research area sand group seismic horizon is explained.Using 3D data volume to the main force of research area sand group
River layer position carries out full 3 D stereo explanation, as shown in Figure 3.
In step 103, extraction research area main force's sand group river attribute.In seismic work station, according to the solution of seismic horizon
It releases as a result, the river attribute chosen amplitude generic attribute according to timing window is set and extract main force's sand group, makes river channel sand attributed graph, such as
Shown in Fig. 4.
In step 104, establishment research area main layer position Channel sandstone percentage composition isogram.Count major channal stratum
Thickness value and in its formation thickness river channel sand thickness value, the radiometer of two value is taken to calculate the sandstone on the set stratum
Percentage composition value.The spreading direction and channel boundary substantially in river are obtained according to attributes extraction, utilize the sandstone hundred of individual well
Point content value sketches out the sandstone percent content isogram in river, as shown in Figure 5.
In step 105, seismic properties river is folded into sandstone percent content figure, is portrayed using sandstone percent content figure
The boundary in river.It is labeled in the form of block diagram.Seismic properties river is folded into sandstone percent content figure, is utilized
Sandstone percent content figure portrays the boundary in river, as shown in Figure 6.
Claims (6)
1. with the method for sandstone percent content isogram constraint shallow-layer meandering stream channel boundary, which is characterized in that this uses sandstone
The method of percentage composition isogram constraint shallow-layer meandering stream channel boundary includes:
Step 1, research area's Strata Comparison screen work is established;
Step 2, the main force of research area sand group seismic horizon is explained;
Step 3, extraction research area main force's sand group river attribute;
Step 4, establishment research area main layer position Channel sandstone percentage composition isogram;
Step 5, seismic properties river is folded into sandstone percent content figure, the side in river is portrayed using sandstone percent content figure
Boundary.
2. the method according to claim 1 with sandstone percent content isogram constraint shallow-layer meandering stream channel boundary,
It is characterized in that, in step 1, sequence dividing is carried out to individual well using drilling well, well-log information identification sequence interface;It is drawn in individual well
On the basis of point, sequence stratigraphic framework is established using lithology, electrical property feature and seismic data, clearly studies the floor of the main force of area sand group
Position.
3. the method according to claim 1 with sandstone percent content isogram constraint shallow-layer meandering stream channel boundary,
It is characterized in that, in step 2, full 3 D stereo solution is carried out to the river floor position of the main force of research area sand group using 3D data volume
It releases.
4. the method according to claim 1 with sandstone percent content isogram constraint shallow-layer meandering stream channel boundary,
It is characterized in that, it in step 3, in seismic work station, according to the explanation results of seismic horizon, shakes according to timing window selection is set
The river attribute of width generic attribute extraction main force sand group, makes river channel sand attributed graph.
5. the method according to claim 1 with sandstone percent content isogram constraint shallow-layer meandering stream channel boundary,
It is characterized in that, in step 4, the thickness value on statistics major channal stratum and in its formation thickness river channel sand thickness
Value, takes the radiometer of two value to calculate the sandstone percent content value on the set stratum;The spread in river is obtained according to attributes extraction
Direction and channel boundary substantially sketch out the sandstone percent content isopleth in river using the sandstone percent content value of individual well
Figure.
6. the method according to claim 1 with sandstone percent content isogram constraint shallow-layer meandering stream channel boundary,
It is characterized in that, in steps of 5, being labeled in the form of block diagram, seismic properties river is folded into sandstone percentage contains
In spirogram, the boundary in river is portrayed using sandstone percent content figure.
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CN109083640A (en) * | 2018-09-26 | 2018-12-25 | 中国石油化工股份有限公司 | Marine fluvial facies oil reservoir edge reserves effectively employ method |
CN109143361A (en) * | 2018-10-10 | 2019-01-04 | 西南石油大学 | A kind of preparation method of the carbonate formation paleogeologic map based on sequence stratigraphy |
CN109441438A (en) * | 2018-10-18 | 2019-03-08 | 中国石油化工股份有限公司 | A kind of structural complex lithologic boundary characterizing method |
CN110501743A (en) * | 2019-08-05 | 2019-11-26 | 中海石油(中国)有限公司 | A kind of sandstone thickness isogram preparation method of reservoir architecture constraint |
CN114969895A (en) * | 2022-04-26 | 2022-08-30 | 长江大学 | River channel profile morphology modeling method based on trend constraint |
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CN109083640A (en) * | 2018-09-26 | 2018-12-25 | 中国石油化工股份有限公司 | Marine fluvial facies oil reservoir edge reserves effectively employ method |
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CN109143361A (en) * | 2018-10-10 | 2019-01-04 | 西南石油大学 | A kind of preparation method of the carbonate formation paleogeologic map based on sequence stratigraphy |
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CN110501743A (en) * | 2019-08-05 | 2019-11-26 | 中海石油(中国)有限公司 | A kind of sandstone thickness isogram preparation method of reservoir architecture constraint |
CN110501743B (en) * | 2019-08-05 | 2021-06-15 | 中海石油(中国)有限公司 | Sandstone thickness contour map compilation method based on reservoir configuration constraint |
CN114969895A (en) * | 2022-04-26 | 2022-08-30 | 长江大学 | River channel profile morphology modeling method based on trend constraint |
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