CN104076390A - Complex tectonic earthquake physical model manufacturing method - Google Patents
Complex tectonic earthquake physical model manufacturing method Download PDFInfo
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- CN104076390A CN104076390A CN201310108962.4A CN201310108962A CN104076390A CN 104076390 A CN104076390 A CN 104076390A CN 201310108962 A CN201310108962 A CN 201310108962A CN 104076390 A CN104076390 A CN 104076390A
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Abstract
The invention discloses a complex tectonic earthquake physical model manufacturing method, and belongs to the technical field of seismic exploration. The method includes the steps that step 1, a simplified design scheme from an actual tectonic map to a model tectonic map is obtained; step 2, models are decomposed, and then separate pouring is conducted on the decomposed models according to the simplified design scheme; step 3, form measurement and carrying are conducted on the models; step 4, final synthetic pouring is conducted on the models. By means of the manufacturing method, the technical effects that work efficiency of an earthquake physical simulation technology is improved and experiment achievement quality is improved are achieved.
Description
Technical field
The present invention relates to seismic exploration technique field, particularly a kind of method for making of complex structure seismic physical model.
Background technology
The western foreland basin extensively distributing of China and class foreland basin hydrocarbon resources are abundant, but topographic relief is violent, and earth's surface execution conditions are severe, underground structure complexity.For a long time, seismic technology is the bottleneck of this field oil-gas exploration development of restriction always.Be mainly manifested in seismic data signal to noise ratio (S/N ratio) low, static correction outstanding problem, is difficult to accurate imaging, and the difficulty that structural trapping is described identification is very large.In the nearly more than ten years, due to developing rapidly of geophysical equipment and technology, mountain region earthquake-capturing, processing, the integrated tackling key problem of interpretation technique have been seen remarkable effect at storehouse car down warping region.The discovery in Kela 2 Gas Field, that 2 gas field of enlightening has fully confirmed that seismic technology is in the great potential of capturing in a western complicated Exploration Domain difficult problem, but on the whole, Geophysical Work under western complex geological condition still can not meet the needs of exploration, and signal to noise ratio (S/N ratio) and the imaging precision of data also exist larger gap from the development in oil field and explorationist's demand at present.
The challenge that foreland area seismic imaging faces is except causing due to surficial geology complicated condition the on the low side and static correction outstanding problem of data signal to noise ratio (S/N ratio), main is because underground structure complexity causes seismic wave field complexity, velocity-depth model is set up difficulty, migration imaging difficulty is large, be embodied in: 1.. against covering nappe, seismic event is had to very strong shielding effect, a little less than the reflected energy of footwall; 2.. fault development, earthquake wave trajectory complexity, diffracted wave is difficult to migration exactly; 3.. at the top of salt tectonic, stratum crushing is serious, higher formation clination, seismic propagation path is disorderly and unsystematic, has serious scattering problems; 4.. because gypsum-salt bed is very large with the difference of impedance on upper and lower stratum, the reflection coefficient at interface is large, the energy that seismic event is down propagated is little, thereby form stronger shielding action, because the very strong gypsum-salt rock of plasticity is also very strong to the absorption of seismic event, cause the signal to noise ratio (S/N ratio) of its below zone of interest seismic data lower simultaneously; 5.. grow contrary punching structure, speed reversing causes time domain to become image distortion, and velocity pitfall is unavoidable.The seismic imaging problem of complex structural area is the focus that petroleum prospecting is paid close attention to always, and can make underground structure accurately image be the key of seismic prospecting success or failure.
For above-mentioned situation, in prior art, design a Utopian geologic model, i.e. the fornix model of overlying water flat bed shape uniform dielectric.The interface, fornix top of this fornix model is made up of the spherical crown of radius 57mm, high 17mm, and bottom surface is the circle (model ratio 1:10000) of diameter 80mm.This fornix model can be considered the buried-hill trap abstract result of 30 ° of high 170m, diameter 800m, the gradients.Compound substance refers to the potpourri of epoxy resin and silicon rubber, both blending ratio differences, and corresponding speed is also different, and epoxy resin composition is more, and potpourri speed is higher.The designing and making of this model has two shortcomings: 1. this modelling is too idealized, has only considered the imaging reflection of a few cover flat beds and a dome structure, reflection wavelength feature that can not the underground complexity of meticulous depiction; 2. model, in manufacturing process at that time, lacks the comparatively making flow process of specification, and in modelling process, human factor is larger.
Summary of the invention
The object of the present invention is to provide a kind of method for making of complex structure seismic physical model to solve modelling of the prior art does not have the technical matters of ripeness standard, has promoted work efficiency and the Experiment Result quality of seismic physical modeling technology.
In order to achieve the above object, the technical solution used in the present invention is:
A method for making for complex structure seismic physical model, is characterized in that, described method for making comprises: step 1: obtain the simplified design scheme from actual geology structural map to Construction of A Model figure; Step 2: according to building of simplified design scheme decomposition model and model in batches; Step 3: described model is carried out to morphometry and carrying; Step 4: described model is carried out to final synthetic building.
Further, described step 1 also comprises: described actual geology structural map is carried out to study area selection, then from the angle of analogue formation, thin layer and/or insignificant structure are adjusted.
Further, described step 1 also comprises: described actual geology structural map is carried out to study area selection, then main-body structure district is moved on to the center section of section.
Further, described step 1 also comprises: described actual geology structural map is carried out to study area selection, then by interlayer additional explanation velocity layering excessive thickness.
Can further, described step 1 also comprises: after the simplified design scheme obtaining from actual geology structural map to Construction of A Model figure, take out ray examination, meet the demands to check final Construction of A Model figure.
Further, described step 2 also comprises: described model is divided into upper, middle and lower three parts, two parts up and down of described model are built.
Further, described step 3 also comprises: in modelling process, modelling often completes one deck and all carries out morphometry, to provide basic data for follow-up Treatment Analysis.
Further, described step 4 also comprises: two parts up and down that described model has been built are stitched together, and then build the part of uncompleted centre.
Compared with prior art, the beneficial effect that technical solution of the present invention produces is:
The method for making of a kind of complex structure seismic physical model that the embodiment of the present invention provides is passed through step 1: obtain the simplified design scheme from actual geology structural map to Construction of A Model figure; Step 2: according to building of simplified design scheme decomposition model and model in batches; Step 3: described model is carried out to morphometry and carrying; Step 4: described model is carried out to final synthetic building, realized and promoted the work efficiency of seismic physical modeling technology and the technique effect of Experiment Result quality.
Brief description of the drawings
The process flow diagram of the method for making of a kind of complex structure seismic physical model that Fig. 1 provides for the embodiment of the present invention.
Embodiment
The method for making of a kind of complex structure seismic physical model that the embodiment of the present invention provides is passed through step 1: obtain the simplified design scheme from actual geology structural map to Construction of A Model figure; Step 2: according to building of simplified design scheme decomposition model and model in batches; Step 3: described model is carried out to morphometry and carrying; Step 4: described model is carried out to final synthetic building, realized and promoted the work efficiency of seismic physical modeling technology and the technique effect of Experiment Result quality.
Embodiment mono-:
The method for making of a kind of complex structure seismic physical model that as described in Figure 1, the embodiment of the present invention provides comprises:
Step 1: obtain the simplified design scheme from actual geology structural map to Construction of A Model figure.
Specifically, the simplified design scheme obtaining from actual geology structural map to Construction of A Model figure mainly refers to: actual geological condition is generally that underground structure is very complicated, the work area that stratum deformation is violent, the structure elucidation in such geology work area itself is just very difficult, this tectonic structure figure can not directly bring analogue formation, must carry out the preferred of concrete study area, then the adjustment that is angle from meeting modelling to some thin layers and unnecessary little structure, in order to improve acquisition quality, main-body structure district is moved on to exactly in addition to the center section of section, finally because structure is more complicated, actual tectonic structure figure may have problems, so, after the simplified design scheme obtaining from actual geology structural map to Construction of A Model figure, we will be by the ray examination of taking out of Construction of A Model figure, whether check final pattern layout meets the demands.On the other hand, what obtain according to actual geology structural map that Construction of A Model figure belongs to those skilled in the art knows general knowledge altogether, and the embodiment of the present invention is not done too much description.
Step 2: according to building of simplified design scheme decomposition model and model in batches.
Specifically, building and referring in batches according to simplified design scheme decomposition model and model: make complex structure physical model and be different from other models of making, larger because of the complicacy of structure and the volume and weight of model, building of model can not upwards be built successively from bottom, model must be decomposed, be generally described model to be divided into upper, middle and lower three parts build, wherein first two parts up and down of described model built.
Step 3: described model is carried out to morphometry and carrying.
Specifically, described model is carried out to morphometry and carrying refers to: modelling often completes one deck, all to carry out morphometry, this is in order accurately to grasp each layer of final actual configuration morphological data of model, for follow-up Treatment Analysis provides basic data, model inevitably will be carried in manufacturing process, because the volume of model is large, weight is large, rely on comparatively difficulty of manpower, need to complete carrying by the plant equipment of special dynamic device.
Step 4: described model is carried out to final synthetic building.
Specifically, described model is carried out to final synthetic building and refer to: by the two parts up and down that complete in step 2, be stitched together, the part in the middle of building, the ownership system that completes model is done work.The present invention adopts portions to build, and first builds the upper and lower two parts of model, more upper and lower two parts are stitched together, and then builds last uncompleted middle layer, and the advantage of doing is like this can shorten to make the duration.
For implementation procedure of the present invention is better described, first by as follows the design general condensed summary in the method for making of the embodiment of the present invention:
The key of 3-D seismics design of physical model has 3 points: 1. select geology target area, target area will be selected for model investigation target, and the size of target area will be determined according to the manufactured size of model; 2. be configured to the adjustment of modelling structure from actual geology, that is: described actual geology structural map is carried out to study area selection, then from the angle of analogue formation, thin layer and/or insignificant structure are adjusted, or, main-body structure district is moved on to the center section of section, or, then by interlayer additional explanation velocity layering excessive thickness.3. the line of taking out of final mask design structure figure is checked, the work of this step is particularly important, due to the complicacy of structure, local structure interpretation results may have problems, as the high point in layer position below exceedes layer position above, such design drawing has serious consequences to the making of model, therefore will be by taking out the rationality of line check final design structural map, if unreasonable, readjust until to take out line review result rationally errorless.
Embodiment bis-:
The present invention also provides a kind of concrete realization example, is first described as follows:
Example: a Tarim Basin gram dark regional large-scale three dimensional complex structure seismic physical model is made
This model is taking Kuche Depression of Talimu Basin gram actual geology work area, dark area as geology target area, preferred 32 × 26km in work area
2structure elucidation achievement as the prototype of modelling, carried out the simplification adjustment of structure from tectonic structure to modelling.After modelling structure has been adjusted, carry out taking out the rationality of line check design structure figure.Design structure take out ray examination errorless after, started model and decomposed with model and build work, model point upper, middle and lower three parts are built, upper and lower two parts are built simultaneously.Model wants synchronous completion morphology to measure in manufacturing process.The volume of gram dark model is large, and weight is large, make and morphometry process in, must carry by the hoisting device of dynamic device.After upper and lower two parts complete, two parts are stitched together, build center section.Finally, building after one deck of centre, the making work of model all completes.
The one or more technical schemes that provide in the embodiment of the present application, at least have following technique effect or advantage:
The method for making of a kind of complex structure seismic physical model that the embodiment of the present invention provides is passed through step 1: obtain the simplified design scheme from actual geology structural map to Construction of A Model figure; Step 2: according to building of simplified design scheme decomposition model and model in batches; Step 3: described model is carried out to morphometry and carrying; Step 4: described model is carried out to final synthetic building, realized and promoted the work efficiency of seismic physical modeling technology and the technique effect of Experiment Result quality.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a method for making for complex structure seismic physical model, is characterized in that, described method for making comprises:
Step 1: obtain the simplified design scheme from actual geology structural map to Construction of A Model figure;
Step 2: according to building of simplified design scheme decomposition model and model in batches;
Step 3: described model is carried out to morphometry and carrying;
Step 4: described model is carried out to final synthetic building.
2. the method for making of complex structure seismic physical model as claimed in claim 1, is characterized in that, described step 1 also comprises:
Described actual geology structural map is carried out to study area selection, then from the angle of analogue formation, thin layer and/or insignificant structure are adjusted.
3. the method for making of complex structure seismic physical model as claimed in claim 1, is characterized in that, described step 1 also comprises:
Described actual geology structural map is carried out to study area selection, then main-body structure district is moved on to the center section of section.
4. the method for making of complex structure seismic physical model as claimed in claim 1, is characterized in that, described step 1 also comprises:
Described actual geology structural map is carried out to study area selection, then by interlayer additional explanation velocity layering excessive thickness.
5. the method for making of complex structure seismic physical model as claimed in claim 1, is characterized in that, described step 1 also comprises:
After the simplified design scheme obtaining from actual geology structural map to Construction of A Model figure, take out ray examination, can meet the demands to check final Construction of A Model figure.
6. the method for making of complex structure seismic physical model as claimed in claim 1, is characterized in that, described step 2 also comprises:
Described model is divided into upper, middle and lower three parts, two parts up and down of described model are built.
7. the method for making of complex structure seismic physical model as claimed in claim 1, is characterized in that, described step 3 also comprises:
In modelling process, modelling often completes one deck and all carries out morphometry, to provide basic data for follow-up Treatment Analysis.
8. the method for making of complex structure seismic physical model as claimed in claim 6, is characterized in that, described step 4 also comprises:
Two parts up and down that described model has been built are stitched together, and then build the part of uncompleted centre.
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Citations (4)
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| US5847975A (en) * | 1991-06-12 | 1998-12-08 | Atlantic Richfield Company | Method of simulating a seismic survey |
| UA80043C2 (en) * | 2005-11-15 | 2007-08-10 | Ukrainian State Geol Explorati | Method for predicting hydrocarbon deposits |
| CN102443245A (en) * | 2010-10-12 | 2012-05-09 | 中国石油化工股份有限公司 | Earthquake physical model and preparation method and application thereof |
| CN102951875A (en) * | 2011-08-25 | 2013-03-06 | 中国石油化工股份有限公司 | Earthquake physical reservoir model, preparation method thereof and application thereof |
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2013
- 2013-03-29 CN CN201310108962.4A patent/CN104076390A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5847975A (en) * | 1991-06-12 | 1998-12-08 | Atlantic Richfield Company | Method of simulating a seismic survey |
| UA80043C2 (en) * | 2005-11-15 | 2007-08-10 | Ukrainian State Geol Explorati | Method for predicting hydrocarbon deposits |
| CN102443245A (en) * | 2010-10-12 | 2012-05-09 | 中国石油化工股份有限公司 | Earthquake physical model and preparation method and application thereof |
| CN102951875A (en) * | 2011-08-25 | 2013-03-06 | 中国石油化工股份有限公司 | Earthquake physical reservoir model, preparation method thereof and application thereof |
Non-Patent Citations (2)
| Title |
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| 李智宏: "《油气地球物理实用新技术—中国石化石油勘探开发研究院南京石油物探研究所2004年学术交流会议文集》", 30 September 2005, 石油工业出版社 * |
| 陆基孟 等: "反向断层地震物理模型的设计和制作", 《石油地球物理勘探》 * |
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Application publication date: 20141001 |