CN103941288A - Three-dimensional target geologic body interpretation method based on horizontal navigation - Google Patents
Three-dimensional target geologic body interpretation method based on horizontal navigation Download PDFInfo
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Abstract
The invention relates to a three-dimensional target geologic body interpretation method based on horizontal navigation. The three-dimensional target geologic body interpretation method based on horizontal navigation includes the following steps that (1), seismic data for target geologic body interpretation are processed in an interpretative mode, and a seismic data volume fully highlighting geologic body information is obtained; (2), horizon slices near a target geologic body are extracted on the seismic data volume under the restraint of fault interpretation and horizon interpretation, and the horizon slices serve as horizontal navigation slices for target geologic body interpretation; (3), section interpretation of the target geologic body is carried out, section interpretation results are projected on seismic sections extracted in the direction perpendicular to the target geologic body strike, and the section interpretation in the direction perpendicular to the target geologic body strike is finished; (4), the seismic sections are extracted in a rolling mode step by step in the direction perpendicular to the target geologic body strike, and the section interpretation of the target geologic body is finished until all the seismic sections of the geologic body within the whole area is finished; (5), interpretation results of all the seismic sections are projected to the planes of the navigation slices, and the target geologic body is interpreted; (6), the steps (3)-(5) are carried out repeatedly until interpretation of all the seismic sections of the target geologic body within the whole area is finished.
Description
Technical field
The present invention relates to a kind of seismic interpretation method of petroleum exploration domain, particularly about a kind of objective geologic body interpretation procedure based on horizontal navigation.
Background technology
Seismic data interpretation comprises three piths such as fault interpretation, the explanation of layer position and the explanation of target geologic body, the current 3-d seismic data set for petroleum exploration and development stage acquisition process, what seismic interpretation still adopted is that conventional two-dimensional is explained, the three dimensions that could not realize is truly explained.Based on the seismic interpretation of two-dimensional interpretation, exist plane information application deficiency and target geologic body to be familiar with the problems such as unclear.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of objective geologic body interpretation procedure based on horizontal navigation that can quick, clear plastid epistemically.
For achieving the above object, the present invention takes following technical scheme: 1, a kind of objective geologic body interpretation procedure based on horizontal navigation, it comprises the following steps: 1) geological data of explaining for target geologic body is carried out to the explanatory processing such as attributive analysis, inverting, to highlight the feature of target geologic body, obtain the seismic data volume of plastid information fully highlightedly; 2) on seismic data volume, and under the constraint of fault interpretation and the explanation of layer position, extract near the horizon slice of target geologic body, this horizon slice can reflect the planar distribution form of target geologic body, the horizontal navigation section of explaining this horizon slice as target geologic body; 3) in the horizontal navigation section of target geologic body, move towards direction along target geologic body and extract seismic section, on seismic data volume, carry out the Interpretation of profile of target geologic body; Move towards direction along vertical target geologic body and extract seismic section, the Interpretation of profile achievement of moving towards direction along target geologic body is projected on the seismic section of extraction, move towards in target geologic body under the navigation directions of directional profile interpretation results, complete fast vertical target geologic body and move towards the Interpretation of profile of direction; 4) under the horizontal navigation section of target geologic body is guided, according to the explanation density of target geologic body, move towards direction along vertical target geologic body and progressively roll and extract another seismic section and complete the Interpretation of profile of target geologic body, until complete the explanation of all another seismic sections of this geologic body of the whole district; 5) interpretation results of all seismic sections and another seismic section is projected in navigation slice plane, work out the boundary polygon of target geologic body accurately, under the constraint control of target geological objects boundary, carrying out the gridding of target geologic body interpretation results calculates, the structure grid surface that obtains target geologic body, completes the explanation of this target geologic body; 6) repeating said steps 3)～5), until complete the seismic profile interpretation of all target geologic bodies of the whole district.
Described step 2) in fault interpretation obtain by a kind of quick three-dimensional fault interpretation method based on horizontal navigation, it comprises the following steps: 1. to the geological data application variance for fault interpretation, curvature, the tomography edge detection method such as relevant, carry out the explanatory processing of tomography reinforcement, so that the breakpoint of tomography and section are more clear on geological data section, obtain fully giving prominence to the seismic data volume of fault information; 2. on seismic data volume, extract the dropping cut slice of objective interval different time, extract the time slice that can reflect fault plane Distribution Characteristics, the horizontal navigation section using this time slice as fault interpretation; 3. in horizontal navigation section, choose a tomography according to the descending principle of fault plane extended length; 4. in the direction perpendicular to selected fault strike, extract seismic section, complete the Interpretation of profile of this tomography at the subpoint place of selected tomography section; 5. on the seismic section of the navigation plane of selected tomography being explained and being extracted, the interpretation results of tomography is carried out gridding processing according to fault interpretation density, fault plane after treatment gridding is projected to new extraction on another seismic section to be explained, on another seismic section, obtain tomographic projection line clearly, with the fault interpretation of the seismic section that effectively navigates; 6. under the navigation directions of explaining at fault plane, according to 3-D seismics fault interpretation density, and in the local refinement of tomography complex region, along the fault interpretation that progressively rolls perpendicular to fault strike direction and extract seismic section and complete this seismic section, until complete the explanation of all seismic sections of this tomography; 7. repeating step 3.～6., until complete all fault interpretations of the whole district.
Described step 2) in layer position explain by a kind of quick three-dimensional layer position interpretation procedure acquisition based on horizontal navigation, it comprises the following steps: 1. the geological data of explaining for layer position is carried out to the explanatory processing such as denoising, mixed road, to strengthen the lateral continuity of original earthquake data body lineups, obtain fully giving prominence to the seismic data volume of layer position information; 2. on seismic data volume, extract near the time slice for the treatment of interpretation horizon, and the fault interpretation achievement obtained of a kind of above-mentioned quick three-dimensional fault interpretation method based on horizontal navigation of application is projected on time slice to the horizontal navigation section of explaining this time slice as layer position; 3. under the navigation directions of horizontal navigation section, avoid tomography and select the seismic section crossing well or connect well, in conjunction with well logging and seismic response features, on seismic data volume body, carry out the layer position of this seismic section and explain, set up layer position interpretation scheme; 4. under the navigation directions of horizontal navigation section, from layer position interpretation scheme, select another only tomography and can enter another seismic section of next fault block, on seismic data volume, carry out the layer position of another seismic section and explain, so that layer position interpretation scheme is incorporated into next fault block; It should be noted that: for individually by the fault block of fault sealing, select seismic section from the place that fault throw is less, adopt the mode of seismic wave groups response characteristic contrast, layer position interpretation scheme is incorporated into this fault block, until each fault block of selected areas has definite layer position interpretation scheme; 5. set up after the layer position interpretation scheme of all fault blocks in selected areas, explain Density extraction main profile and cross-track seismic section according to layer position, under the navigation directions of the layer position of each fault block interpretation scheme, explain the layer position that completes each seismic section on seismic data volume body, explains until complete the layer position of all seismic sections of the each tomography of the whole district; 6. the intersection point of the explanation of computation layer position and fault interpretation, intersection point is projected on the base map of earthquake work area, the each tomography of compilation is in the plane polygon of this layer of position one by one, under the polygonal constraint of each fault plane, carrying out the gridding of layer position interpretation results calculates, obtain the structure grid surface of layer position, the explanation of complete layer position; 7. repeating step 3.～6., until complete the explanation of all layer positions of the whole district.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention makes an explanation to target geologic body on the seismic section that moves towards direction extraction along target geologic body, therefore the seismic response of target geologic body continuously and be easy to identification, is conducive to the Interpretation of profile of target geologic body.2, the present invention moves towards the space extension of the Interpretation of profile control target geologic body of direction along target geologic body, and in conjunction with the horizontal boundary of the Interpretation of profile control target geologic body of capwise direction, the two is in conjunction with the spatial feature that can accurately control target geologic body.3, under the guide of horizontal navigation section, employing the inventive method can make full use of the plane information of 3D seismic data, portrays more accurately the spatial form of target geologic body.
Brief description of the drawings
Fig. 1 is the horizontal navigation section schematic diagram that river channel sand is explained
Fig. 2 be along river channel sand move towards direction extract seismic section 1. and top bottom surface explain schematic diagram
Fig. 3 be along river channel sand move towards direction extract seismic section 2. and top bottom surface explain schematic diagram
Fig. 4 be along river channel sand move towards direction extract seismic section 3. and top bottom surface explain schematic diagram
Fig. 5 moves towards along river channel sand the floor map 1., 2., 3. of seismic section that direction is extracted
Fig. 6 be vertical river channel sand move towards direction extract seismic section 4. and top bottom surface explain schematic diagram
Fig. 7 be vertical river channel sand move towards direction extract seismic section 5. and top bottom surface explain schematic diagram
Fig. 8 be vertical river channel sand move towards direction extract seismic section 6. and top bottom surface explain schematic diagram
Fig. 9 be vertical river channel sand move towards direction extract seismic section 7. and top bottom surface explain schematic diagram
Figure 10 is the schematic diagram of river channel sand whole district seismic profile interpretation and boundary polygon establishment thereof
Figure 11 is the schematic diagram of river channel sand structure grid surface
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
The invention provides a kind of objective geologic body interpretation procedure based on horizontal navigation that can quick, clear plastid epistemically, comprise the following steps:
1) geological data of explaining for target geologic body is carried out to the explanatory processing such as attributive analysis, inverting, to highlight the feature of target geologic body, obtain the seismic data volume of plastid information fully highlightedly.
2) on seismic data volume, and under the constraint of explaining in the tomography that utilizes a kind of quick three-dimensional fault interpretation method based on horizontal navigation and a kind of quick three-dimensional layer position interpretation procedure based on horizontal navigation to complete and layer position, extract near the horizon slice of target geologic body, this horizon slice can reflect the planar distribution form of target geologic body, the horizontal navigation section of explaining this horizon slice as target geologic body.Wherein, a kind of quick three-dimensional fault interpretation method based on horizontal navigation, comprises the following steps:
1. to the geological data application variance for fault interpretation, curvature, the tomography edge detection method such as relevant, carry out the explanatory processing of tomography reinforcement, so that the breakpoint of tomography and section are more clear on geological data section, obtain fully giving prominence to the seismic data volume of fault information.
2. on seismic data volume, extract the dropping cut slice of objective interval different time, extract the time slice that can reflect fault plane Distribution Characteristics, the horizontal navigation section using this time slice as fault interpretation.
3. in horizontal navigation section, choose a tomography according to the descending principle of fault plane extended length.
4. in the direction perpendicular to selected fault strike, extract seismic section, complete the Interpretation of profile of this tomography at the subpoint place of selected tomography section.
5. on the seismic section of the navigation plane of selected tomography being explained and being extracted, the interpretation results of tomography is carried out gridding processing according to fault interpretation density, fault plane after treatment gridding is projected to new extraction on another seismic section to be explained, on another seismic section, obtain tomographic projection line clearly, with the fault interpretation of the seismic section that effectively navigates.
6. under the navigation directions of explaining at fault plane, according to 3-D seismics fault interpretation density, and in the local refinement of tomography complex region, along the fault interpretation that progressively rolls perpendicular to fault strike direction and extract seismic section and complete this seismic section, until complete the explanation of all seismic sections of this tomography.
7. repeating step 3.～6., until complete all fault interpretations of the whole district.
A quick three-dimensional layer position interpretation procedure based on horizontal navigation, comprises the following steps:
1. the geological data of explaining for layer position is carried out to the explanatory processing such as denoising, mixed road, to strengthen the lateral continuity of original earthquake data body lineups, obtain fully giving prominence to the seismic data volume of layer position information.
2. on seismic data volume, extract near the time slice for the treatment of interpretation horizon, and the fault interpretation achievement obtained of a kind of above-mentioned quick three-dimensional fault interpretation method based on horizontal navigation of application is projected on time slice to the horizontal navigation section of explaining this time slice as layer position.
3. under the navigation directions of horizontal navigation section, avoid tomography and select the seismic section crossing well or connect well, in conjunction with well logging and seismic response features, on seismic data volume body, carry out the layer position of this seismic section and explain, set up layer position interpretation scheme.
4. under the navigation directions of horizontal navigation section, from layer position interpretation scheme, select another only tomography and can enter another seismic section of next fault block, on seismic data volume, carry out the layer position of another seismic section and explain, so that layer position interpretation scheme is incorporated into next fault block; It should be noted that: for individually by the fault block of fault sealing, select seismic section from the place that fault throw is less, adopt the mode of seismic wave groups response characteristic contrast, layer position interpretation scheme is incorporated into this fault block, until each fault block of selected areas has definite layer position interpretation scheme.
5. set up after the layer position interpretation scheme of all fault blocks in selected areas, explain Density extraction main profile and cross-track seismic section according to layer position, under the navigation directions of the layer position of each fault block interpretation scheme, explain the layer position that completes each seismic section on seismic data volume body, explains until complete the layer position of all seismic sections of the each tomography of the whole district.
6. the intersection point of the explanation of computation layer position and fault interpretation, intersection point is projected on the base map of earthquake work area, the each tomography of compilation is in the plane polygon of this layer of position one by one, under the polygonal constraint of each fault plane, carrying out the gridding of layer position interpretation results calculates, obtain the structure grid surface of layer position, the explanation of complete layer position.
7. repeating step 3.～6., until complete the explanation of all layer positions of the whole district.
3) in the horizontal navigation section of target geologic body, move towards direction along target geologic body and extract seismic section, on seismic data volume, carry out the Interpretation of profile of target geologic body.Move towards direction along vertical target geologic body and extract seismic section, the Interpretation of profile achievement of moving towards direction along target geologic body is projected on the seismic section of extraction, move towards in target geologic body under the navigation directions of directional profile interpretation results, complete fast vertical target geologic body and move towards the Interpretation of profile of direction.
4) under the horizontal navigation section of target geologic body is guided, according to the explanation density of target geologic body, move towards direction along vertical target geologic body and progressively roll and extract some seismic sections and complete the Interpretation of profile of target geologic body, until complete the explanation of all seismic sections of this geologic body of the whole district.
5) interpretation results of all seismic sections is projected in navigation slice plane, work out the boundary polygon of target geologic body accurately, under the constraint control of target geological objects boundary, carrying out the gridding of target geologic body interpretation results calculates, the structure grid surface that obtains target geologic body, completes the explanation of this target geologic body.
6) repeating step 3)～5), until complete the seismic profile interpretation of all target geologic bodies of the whole district.
Embodiment: narrow channel sand body is generally grown in fluvial depositional reservoir oil gas field, explains for completing fast this type of target geologic body, taking certain oil field narrow channel sand body as example, adopts the inventive method to explain narrow channel sand body, comprises the following steps:
1) geological data of oil field narrow channel sand body is carried out to the explanatory processing such as attributive analysis, inverting, to highlight the feature of oil field narrow channel sand body, obtain the seismic data volume of plastid information fully highlightedly.
2) known by well logging and the seismic response features of analysis oil field narrow channel sand body, this oil field narrow channel sand body has obvious low impedance characteristics.As shown in Figure 1, on seismic data volume, and under the constraint of explaining in the tomography that utilizes a kind of quick three-dimensional fault interpretation method based on horizontal navigation and a kind of quick three-dimensional layer position interpretation procedure based on horizontal navigation to complete and layer position, extract the horizon slice of oil field narrow channel sand body objective interval, this horizon slice can reflect the planar distribution feature of oil field narrow channel sand body preferably, the horizontal navigation section of explaining this horizon slice as oil field narrow channel sand body.
3) as shown in Fig. 2～Fig. 5, in horizontal navigation section, move towards to extract any line seismic section 1., 2. and 3. along oil field narrow channel sand body, oil field narrow channel sand body is shown as on 1. at seismic section laterally continuously and region can be identified and follows the trail of the response characteristic of explaining, can complete fast the explanation of bottom surface, river channel sand top.As shown in Fig. 6～Fig. 9, vertical river channel sand moves towards direction and extracts seismic section 4., 5., 6. and 7., the Interpretation of profile achievement of moving towards direction along oil field narrow channel sand body is projected in to seismic section 4., 5., 6. and 7. above, and precision navigation location vertical narrow band river channel sand moves towards the Interpretation of profile of direction.
4) as shown in figure 10, under the horizontal navigation section of target geologic body is guided, according to the explanation density of narrow channel sand body, move towards direction along vertical narrow band river channel sand and progressively roll and extract seismic section and complete the Interpretation of profile of bottom surface, narrow channel sand body top, until complete the explanation of all seismic sections of this river channel sand of the whole district.
5) Interpretation of profile achievement is projected in navigation slice plane, works out the boundary polygon of narrow channel sand body (as shown in the polygon of black lines in Figure 11) accurately.Under the constraint control of narrow channel sand body boundary polygon, the gridding that completes narrow channel sand body Interpretation of profile achievement is calculated, the structure grid surface (as shown in grey fill area in Figure 11) that obtains narrow channel sand body, completes the explanation of this river channel sand.
6) repeating step 3)～4), until complete the seismic profile interpretation of all target geologic bodies of the whole district.
The various embodiments described above are only for illustrating the present invention; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (3)
1. the objective geologic body interpretation procedure based on horizontal navigation, it comprises the following steps:
1) geological data of explaining for target geologic body is carried out to the explanatory processing such as attributive analysis, inverting, to highlight the feature of target geologic body, obtain the seismic data volume of plastid information fully highlightedly;
2) on seismic data volume, and under the constraint of fault interpretation and the explanation of layer position, extract near the horizon slice of target geologic body, this horizon slice can reflect the planar distribution form of target geologic body, the horizontal navigation section of explaining this horizon slice as target geologic body;
3) in the horizontal navigation section of target geologic body, move towards direction along target geologic body and extract seismic section, on seismic data volume, carry out the Interpretation of profile of target geologic body; Move towards direction along vertical target geologic body and extract seismic section, the Interpretation of profile achievement of moving towards direction along target geologic body is projected on the seismic section of extraction, move towards in target geologic body under the navigation directions of directional profile interpretation results, complete fast vertical target geologic body and move towards the Interpretation of profile of direction;
4) under the horizontal navigation section of target geologic body is guided, according to the explanation density of target geologic body, move towards direction along vertical target geologic body and progressively roll and extract another seismic section and complete the Interpretation of profile of target geologic body, until complete the explanation of all another seismic sections of this geologic body of the whole district;
5) interpretation results of all seismic sections and another seismic section is projected in navigation slice plane, work out the boundary polygon of target geologic body accurately, under the constraint control of target geological objects boundary, carrying out the gridding of target geologic body interpretation results calculates, the structure grid surface that obtains target geologic body, completes the explanation of this target geologic body;
6) repeating said steps 3)～5), until complete the seismic profile interpretation of all target geologic bodies of the whole district.
2. a kind of objective geologic body interpretation procedure based on horizontal navigation as claimed in claim 1, is characterized in that: described step 2) in fault interpretation obtain by a kind of quick three-dimensional fault interpretation method based on horizontal navigation, it comprises the following steps:
1. to the geological data application variance for fault interpretation, curvature, the tomography edge detection method such as relevant, carry out the explanatory processing of tomography reinforcement, so that the breakpoint of tomography and section are more clear on geological data section, obtain fully giving prominence to the seismic data volume of fault information;
2. on seismic data volume, extract the dropping cut slice of objective interval different time, extract the time slice that can reflect fault plane Distribution Characteristics, the horizontal navigation section using this time slice as fault interpretation;
3. in horizontal navigation section, choose a tomography according to the descending principle of fault plane extended length;
4. in the direction perpendicular to selected fault strike, extract seismic section, complete the Interpretation of profile of this tomography at the subpoint place of selected tomography section;
5. on the seismic section of the navigation plane of selected tomography being explained and being extracted, the interpretation results of tomography is carried out gridding processing according to fault interpretation density, fault plane after treatment gridding is projected to new extraction on another seismic section to be explained, on another seismic section, obtain tomographic projection line clearly, with the fault interpretation of the seismic section that effectively navigates;
6. under the navigation directions of explaining at fault plane, according to 3-D seismics fault interpretation density, and in the local refinement of tomography complex region, along the fault interpretation that progressively rolls perpendicular to fault strike direction and extract seismic section and complete this seismic section, until complete the explanation of all seismic sections of this tomography;
7. repeating step 3.～6., until complete all fault interpretations of the whole district.
3. a kind of objective geologic body interpretation procedure based on horizontal navigation as claimed in claim 1, is characterized in that: described step 2) in layer position explain that it comprises the following steps by a kind of quick three-dimensional layer position interpretation procedure acquisition based on horizontal navigation:
1. the geological data of explaining for layer position is carried out to the explanatory processing such as denoising, mixed road, to strengthen the lateral continuity of original earthquake data body lineups, obtain fully giving prominence to the seismic data volume of layer position information;
2. on seismic data volume, extract near the time slice for the treatment of interpretation horizon, and the fault interpretation achievement obtained of a kind of above-mentioned quick three-dimensional fault interpretation method based on horizontal navigation of application is projected on time slice to the horizontal navigation section of explaining this time slice as layer position;
3. under the navigation directions of horizontal navigation section, avoid tomography and select the seismic section crossing well or connect well, in conjunction with well logging and seismic response features, on seismic data volume body, carry out the layer position of this seismic section and explain, set up layer position interpretation scheme;
4. under the navigation directions of horizontal navigation section, from layer position interpretation scheme, select another only tomography and can enter another seismic section of next fault block, on seismic data volume, carry out the layer position of another seismic section and explain, so that layer position interpretation scheme is incorporated into next fault block; It should be noted that: for individually by the fault block of fault sealing, select seismic section from the place that fault throw is less, adopt the mode of seismic wave groups response characteristic contrast, layer position interpretation scheme is incorporated into this fault block, until each fault block of selected areas has definite layer position interpretation scheme;
5. set up after the layer position interpretation scheme of all fault blocks in selected areas, explain Density extraction main profile and cross-track seismic section according to layer position, under the navigation directions of the layer position of each fault block interpretation scheme, explain the layer position that completes each seismic section on seismic data volume body, explains until complete the layer position of all seismic sections of the each tomography of the whole district;
6. the intersection point of the explanation of computation layer position and fault interpretation, intersection point is projected on the base map of earthquake work area, the each tomography of compilation is in the plane polygon of this layer of position one by one, under the polygonal constraint of each fault plane, carrying out the gridding of layer position interpretation results calculates, obtain the structure grid surface of layer position, the explanation of complete layer position;
7. repeating step 3.～6., until complete the explanation of all layer positions of the whole district.
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| CN109752759A (en) * | 2019-01-31 | 2019-05-14 | 深圳大学 | A kind of visual realization method and system of aftershock fault structure |
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| CN103941288B (en) | 2016-08-17 |
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