CN110687588A - Method and system for seismic identification and prediction based on dolomite - Google Patents
Method and system for seismic identification and prediction based on dolomite Download PDFInfo
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- 239000010459 dolomite Substances 0.000 title claims abstract description 101
- 229910000514 dolomite Inorganic materials 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004364 calculation method Methods 0.000 claims abstract description 21
- 238000004458 analytical method Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 18
- 239000011435 rock Substances 0.000 claims description 39
- 238000011161 development Methods 0.000 claims description 12
- 230000002349 favourable effect Effects 0.000 claims description 10
- 208000035126 Facies Diseases 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 5
- 238000003556 assay Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000011156 evaluation Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 11
- 235000019738 Limestone Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010291 electrical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- G01V1/01—Measuring or predicting earthquakes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
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Abstract
The invention discloses a method and a system for earthquake identification and prediction based on dolomite, which comprises a mainboard, an acquisition module, a calculation module, a processing module, an analysis module and a display module, wherein the acquisition module, the calculation module, the processing module, the analysis module and the display module are all arranged on the mainboard and are in signal connection with each other, the acquisition module acquires the collected information, and the acquired information comprises well data, quadriversal relation, geological result and chemical examination data. The method can be used for conveniently identifying the dolomite, and is suitable for popularization and application.
Description
Technical Field
The invention relates to the technical field of seismic identification and prediction of dolomite, in particular to a method and a system for seismic identification and prediction based on the dolomite.
Background
Dolostone is a sedimentary carbonate rock, mainly composed of dolomite, often mixed with quartz, feldspar, calcite and clay minerals, is grayish white, brittle, hard, easy to scratch with ironware, and slowly foamed or unfoamed when meeting dilute hydrochloric acid, has a very similar appearance to limestone, and can be divided into primary dolostone, diagenetic dolostone and postnatal dolostone according to the ingredients; according to the structure, the dolomite comprises crystalline dolomite, residual heterogenized particle dolomite, clastic dolomite, microcrystalline dolomite and the like, the dolomite contains high magnesium, forms white stone powder after weathering, is tougher than limestone, can be used as flux and refractory material in metallurgical industry, can be used for producing calcium magnesium phosphate fertilizer, granular chemical fertilizer and the like in chemical industry, and can also be used as ceramic, glass ingredient and building stone, the developing marine facies and sea-land transition facies of China all have dolomite oil gas forming and enriching conditions, the dolomite oil gas resources are rich, China has made an important progress in evaluating the potential of the dolomite oil gas resources and exploring and developing, the dolomite oil gas resources have been found in many places in China at present, the development prospect is good, and with the theoretical innovation of evaluating and developing the dolomite oil gas geology and the breakthrough of related key technologies, the development prospect of the dolomite oil gas resources in China in the future is wide;
in the current detection, the detection of the dolomite is not comprehensive, the detection, the identification and the prediction of the dolomite are one of more important detection items in China, the detection is carried out after the earthquake identification, the detection and the identification of the existence range of the dolomite can be better often carried out, the dolomite is identified and predicted by an earthquake method, the significance in the aspect of oil and gas exploration is mainly shown that the dolomite is an important reservoir body of oil and gas, and the technical blank of the dolomite needs to be supplemented urgently.
Disclosure of Invention
The invention provides a dolomite earthquake recognition and prediction method and system, which can effectively solve the problem that the detection of dolomite is not comprehensive enough in the current detection proposed in the background technology, the detection, recognition and prediction of dolomite is one of more important domestic detection items, the detection of dolomite is performed after earthquake recognition, the existence range of dolomite can be better detected and recognized, the dolomite is recognized and predicted by an earthquake method, and the significance in the aspect of oil-gas exploration mainly shows that the dolomite is an important reservoir body of oil and gas, so the technical blank of the dolomite needs to be supplemented urgently.
In order to achieve the purpose, the invention provides the following technical scheme: a method for seismic identification and prediction based on dolomite comprises the following steps:
s1, analyzing the collected well data, finding out the quadriversal relationship of the dolomite on the well, analyzing geological results, analyzing assay data by thin slices, finding out the rock physical characteristics of the dolomite, and finding out the elastic parameters capable of describing the difference between the dolomite and the surrounding rocks;
s2, forward modeling seismic response characteristics between the dolomite and the surrounding rocks by using impedance difference, dividing favorable seismic phase zones by using seismic data according to the characteristics, and qualitatively describing the development range of the dolomite;
and S3, inverting favorable elastic parameters by using the prestack data and the physical analysis conclusion of the rock on the well, and quantitatively describing the distribution range of the dolomite.
According to the technical scheme, the non-permeable rock stratum which is widely distributed, stable in thickness and obvious in electrical characteristics is selected for the selection of the quadric relation of the dolomite in the step S1.
According to the technical scheme, in the step S2, the impedance difference is measured by an electrical method, and in calculation, the anisotropic middle rock is formed by alternately overlapping a plurality of thin layers with different resistivity, the communication condition of the gaps between the dolosts is influenced by the moisture, and the resistivity is influenced by the salt concentration in the moisture, so that the tested dolosts need to be dry, and the errors are reduced by averaging the measurements of four times.
According to the above technical solution, the distribution range of dolomite in step S3 is calculated and then stored in a computer, and data is backed up and displayed.
A system for earthquake identification and prediction based on dolomite comprises a main board, an acquisition module, a calculation module, a processing module, an analysis module and a display module;
the acquisition module, the calculation module, the processing module, the analysis module and the display module are all installed on the mainboard and are in signal connection with each other.
According to the technical scheme, the collection module collects the collected information, the collected information comprises well data, a four-property relation, a geological result and a laboratory data, the calculation module calculates the collected information after the collection is finished, and then the rock physical characteristics and the elastic parameters of the dolomite are calculated.
According to the technical scheme, the processing module calculates the impedance difference through electrical prospecting, stores the data, and transmits the data to the calculating module for normal calculation, so that the value can be normally calculated.
According to the technical scheme, the analysis module analyzes the data of the calculation module and the processing module, so that the seismic facies zone is analyzed, and the development range of the dolomite is qualitatively described.
According to the technical scheme, the display module performs demonstration distribution on the data of the analysis module, reports to an operator, performs normal pre-judgment after data collection for multiple times, and calculates the percentage, so that multiple judgments are provided for the operator.
According to the technical scheme, the acquisition module is externally connected with the keyboard and the acquisition instrument, and the display module is externally connected with the display screen and the projector.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure, safe and convenient use, and during operation, the collected well data is analyzed to find out the quadriversal relationship of the dolomite on the well, analyze geological results, analyze and test data in a thin slice way, find out the rock physical characteristics of the dolomite, find out the elastic parameters capable of describing the difference between the dolomite and the surrounding rocks, realize the acquisition and processing of data, positively simulate the seismic response characteristics between the dolomite and the surrounding rocks according to the impedance difference, divide favorable seismic facies zones by using the seismic data according to the characteristics, qualitatively describe the development range of the dolomite, thereby ensuring more than one part for the identification and prediction of the dolomite, improving multiple choices of the data, storing the data, facilitating the prediction of the later stage, and reversely performing the favorable elastic parameters by using the prestack data and the physical analysis conclusion of the rock on the well, the method and the system for identifying and predicting the dolomite have the advantages that the distribution range of the dolomite is described quantitatively, the predictability of data is improved, the method and the system for identifying and predicting the dolomite can be used mutually, the identification of the dolomite can be facilitated, the data of the computing module and the data of the processing module are analyzed by the analyzing module, accordingly, the seismic facies is analyzed, the development range of the dolomite is described qualitatively, and the method and the system are suitable for popularization and use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic flow diagram of the process of the present invention;
fig. 2 is a schematic diagram of the system architecture of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1-2, the invention provides a technical scheme, and a method for identifying and predicting an earthquake based on dolomite, which specifically comprises the following steps:
s1, analyzing the collected well data, finding out the quadriversal relationship of the dolomite on the well, analyzing geological results, analyzing assay data by thin slices, finding out the rock physical characteristics of the dolomite, and finding out the elastic parameters capable of describing the difference between the dolomite and the surrounding rocks;
s2, forward modeling seismic response characteristics between the dolomite and the surrounding rocks by using impedance difference, dividing favorable seismic phase zones by using seismic data according to the characteristics, and qualitatively describing the development range of the dolomite;
and S3, inverting favorable elastic parameters by using the prestack data and the physical analysis conclusion of the rock on the well, and quantitatively describing the distribution range of the dolomite.
According to the technical scheme, the non-permeable rock stratum which is widely distributed, stable in thickness and obvious in electrical characteristics is selected for the selection of the quadric relation of the dolomite in the step S1.
According to the technical scheme, in the step S2, the impedance difference is measured by an electrical method, in calculation, the anisotropic middle rock is formed by alternately overlapping a plurality of thin layers with different resistivity, the communication condition of the gaps of the dolomite is influenced by the moisture, and the resistivity is influenced by the salt concentration in the moisture, so that the tested dolomite needs to be dry, and the average value is obtained through four times of measurement to reduce the error.
According to the technical scheme, in the step S3, after the calculation is completed on the distribution range of the dolomite, the distribution range of the dolomite is stored in a computer, and data is backed up and displayed.
A system for earthquake identification and prediction based on dolomite comprises a main board, an acquisition module, a calculation module, a processing module, an analysis module and a display module;
the acquisition module, the calculation module, the processing module, the analysis module and the display module are all installed on the mainboard and are in signal connection with each other.
According to the technical scheme, the collection module collects the collected information, the collected information comprises well data, the quadriversal relations, geological results and assay data, the calculation module calculates the collected information after the collection is completed, and then the rock physical characteristics and the elastic parameters of the dolomite are calculated.
According to the technical scheme, the processing module calculates the impedance difference through electrical prospecting, stores the data, and transmits the data to the calculating module for normal calculation, so that the value can be normally calculated.
According to the technical scheme, the analysis module analyzes the data of the calculation module and the processing module, so that the seismic facies zone is analyzed, and the development range of the dolomite is qualitatively described.
According to the technical scheme, the display module performs demonstration distribution on the data of the analysis module, reports to an operator, performs normal pre-judgment after data collection for multiple times, and calculates the percentage, so that multiple judgments are provided for the operator.
According to the technical scheme, the acquisition module is externally connected with the keyboard and the acquisition instrument, and the display module is externally connected with the display screen and the projector.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure, safe and convenient use, and during operation, the collected well data is analyzed to find out the quadriversal relationship of the dolomite on the well, analyze geological results, analyze and test data in a thin slice way, find out the rock physical characteristics of the dolomite, find out the elastic parameters capable of describing the difference between the dolomite and the surrounding rocks, realize the acquisition and processing of data, positively simulate the seismic response characteristics between the dolomite and the surrounding rocks according to the impedance difference, divide favorable seismic facies zones by using the seismic data according to the characteristics, qualitatively describe the development range of the dolomite, thereby ensuring more than one part for the identification and prediction of the dolomite, improving multiple choices of the data, storing the data, facilitating the prediction of the later stage, and reversely performing the favorable elastic parameters by using the prestack data and the physical analysis conclusion of the rock on the well, the method and the system for identifying and predicting the dolomite have the advantages that the distribution range of the dolomite is described quantitatively, the predictability of data is improved, the method and the system for identifying and predicting the dolomite can be used mutually, the identification of the dolomite can be facilitated, the data of the computing module and the data of the processing module are analyzed by the analyzing module, accordingly, the seismic facies is analyzed, the development range of the dolomite is described qualitatively, and the method and the system are suitable for popularization and use.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for seismic identification and prediction based on dolomite is characterized in that: the method specifically comprises the following steps:
s1, analyzing the collected well data, finding out the quadriversal relationship of the dolomite on the well, analyzing geological results, analyzing assay data by thin slices, finding out the rock physical characteristics of the dolomite, and finding out the elastic parameters capable of describing the difference between the dolomite and the surrounding rocks;
s2, forward modeling seismic response characteristics between the dolomite and the surrounding rocks by using impedance difference, dividing favorable seismic phase zones by using seismic data according to the characteristics, and qualitatively describing the development range of the dolomite;
and S3, inverting favorable elastic parameters by using the prestack data and the physical analysis conclusion of the rock on the well, and quantitatively describing the distribution range of the dolomite.
2. The dolomite rock-based seismic identification and prediction method as claimed in claim 1, wherein said selection of the quartile relationship for dolomite in step S1 selects a widely distributed, stable thickness, impermeable rock formation with distinct electrical characteristics.
3. The method as claimed in claim 1, wherein the impedance difference in step S2 is measured by electrical prospecting, the anisotropic rock is formed by alternately stacking thin layers with different resistivity, the water content in the gaps between dolomites affects the connectivity, and the salt concentration in the water affects the resistivity, so that the tested dolomites need to be dry, and the average value is obtained through four measurements to reduce the error.
4. The dolomite rock-based seismic identification and prediction method as claimed in claim 1, wherein the distribution range of dolomite rock in step S3 is calculated and then stored in a computer, and data is backed up and displayed.
5. The dolomite rock-based earthquake recognition and prediction system according to any one of claims 1 to 4, which comprises a main board, an acquisition module, a calculation module, a processing module, an analysis module and a display module;
the acquisition module, the calculation module, the processing module, the analysis module and the display module are all installed on the mainboard and are in signal connection with each other.
6. The dolomite rock-based seismic identification and prediction system according to claim 5, wherein the collection module collects the collected information, the collected information includes well data, quadriversal relations, geological results and laboratory data, the collection is completed, the calculation module calculates the collected information, and then calculates the petrophysical characteristics and elastic parameters of the dolomite rock.
7. A dolomite rock based seismic identification and prediction system as claimed in claim 5 wherein said processing module calculates impedance differences through electrical prospecting and saves the data which is then transmitted to the calculation module for normal calculation to facilitate normal evaluation.
8. The dolomite rock-based seismic recognition and prediction system according to claim 5, wherein the analysis module analyzes the data of the calculation module and the processing module, so as to analyze the seismic facies and qualitatively describe the development range of the dolomite rock.
9. The dolomite rock-based seismic recognition and prediction system as claimed in claim 5, wherein the display module performs demonstration distribution of the data of the analysis module and reports to the operator, and after collecting data for a plurality of times, normal prejudgment is performed and percentage is calculated, so that multiple judgments are provided for the operator.
10. The dolomite earthquake recognition and prediction system as recited in claim 5, wherein said acquisition module is externally connected with a keyboard and an acquisition instrument, and said display module is externally connected with a display screen and a projector.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0674189A2 (en) * | 1994-03-25 | 1995-09-27 | Western Atlas International, Inc. | Seismic exploration |
| CN103527184A (en) * | 2013-10-28 | 2014-01-22 | 北京大学 | Method and system for predicting dolomite reservoir |
| WO2014078663A2 (en) * | 2012-11-15 | 2014-05-22 | Foro Energy, Inc. | High power laser hydraulic fructuring, stimulation, tools systems and methods |
| CN106908856A (en) * | 2017-01-19 | 2017-06-30 | 中国石油天然气股份有限公司 | A kind of earthquake prediction method of lacustrine facies thin layer dolostone reservoirs |
| CN109425896A (en) * | 2017-08-25 | 2019-03-05 | 中国石油天然气股份有限公司 | Dolomite oil and gas reservoir distribution forecasting method and device |
-
2019
- 2019-10-23 CN CN201911011981.9A patent/CN110687588A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0674189A2 (en) * | 1994-03-25 | 1995-09-27 | Western Atlas International, Inc. | Seismic exploration |
| WO2014078663A2 (en) * | 2012-11-15 | 2014-05-22 | Foro Energy, Inc. | High power laser hydraulic fructuring, stimulation, tools systems and methods |
| CN103527184A (en) * | 2013-10-28 | 2014-01-22 | 北京大学 | Method and system for predicting dolomite reservoir |
| CN106908856A (en) * | 2017-01-19 | 2017-06-30 | 中国石油天然气股份有限公司 | A kind of earthquake prediction method of lacustrine facies thin layer dolostone reservoirs |
| CN109425896A (en) * | 2017-08-25 | 2019-03-05 | 中国石油天然气股份有限公司 | Dolomite oil and gas reservoir distribution forecasting method and device |
Non-Patent Citations (1)
| Title |
|---|
| 张强 等: ""正演模拟技术在白云岩薄储层预测研究中的应用"", 《物探与化探》 * |
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Application publication date: 20200114 |