RU2017132164A - Многоэтапный процесс инверсии полного волнового поля, при выполнении которого образуют массив свободных от многократных волн данных - Google Patents
Многоэтапный процесс инверсии полного волнового поля, при выполнении которого образуют массив свободных от многократных волн данных Download PDFInfo
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- RU2017132164A RU2017132164A RU2017132164A RU2017132164A RU2017132164A RU 2017132164 A RU2017132164 A RU 2017132164A RU 2017132164 A RU2017132164 A RU 2017132164A RU 2017132164 A RU2017132164 A RU 2017132164A RU 2017132164 A RU2017132164 A RU 2017132164A
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- geological environment
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- wave field
- inversion
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- 238000000034 method Methods 0.000 title claims 29
- 230000000704 physical effect Effects 0.000 claims 14
- 238000002310 reflectometry Methods 0.000 claims 3
- 238000004088 simulation Methods 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000010276 construction Methods 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 2
- 230000003044 adaptive effect Effects 0.000 claims 1
- 229930195733 hydrocarbon Natural products 0.000 claims 1
- 150000002430 hydrocarbons Chemical class 0.000 claims 1
- 230000005012 migration Effects 0.000 claims 1
- 238000013508 migration Methods 0.000 claims 1
Classifications
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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
- G01V1/282—Application of seismic models, synthetic seismograms
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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
- G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
- G01V1/364—Seismic filtering
- G01V1/368—Inverse filtering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/50—Corrections or adjustments related to wave propagation
- G01V2210/56—De-ghosting; Reverberation compensation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/66—Subsurface modeling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/67—Wave propagation modeling
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Claims (22)
1. Способ, содержащий этапы, на которых:
выполняют при использовании компьютера первый процесс инверсии полного волнового поля относительно входных сейсмических данных, которые включают в себя многократные волны от свободной поверхности, при этом первый процесс инверсии полного волнового поля выполняют с граничным условием свободной поверхности, наложенным на верхнюю поверхность исходной модели физических свойств геологической среды, и при первом процессе инверсии полного волнового поля выполняют построение конечной модели физических свойств геологической среды;
прогнозируют при использовании компьютера многократные волны от границ раздела геологической среды с учетом конечной модели физических свойств геологической среды;
при этом способ также включает в себя
(а) удаление при использовании компьютера прогнозных многократных волн от границ раздела геологической среды из входных сейсмических данных и получение свободных от многократных волн сейсмических данных, и выполнение после удаления второго процесса инверсии полного волнового поля относительно входных сейсмических данных с удаленными из них прогнозными многократными волнами от границ раздела геологической среды, при этом второй процесс инверсии полного волнового поля выполняют с поглощающим граничным условием, наложенным на верхнюю поверхность исходной модели физических свойств геологической среды, и при втором процессе инверсии полного волнового поля выполняют построение свободной от многократных волн конечной модели физических свойств геологической среды, или
(b) выполнение при использовании компьютера второго процесса инверсии полного волнового поля относительно входных сейсмических данных, при этом во втором процессе инверсии волнового поля используют целевую функцию, которая имитирует только однократные отражения, целевую функцию базируют на прогнозных многократных волнах от границ раздела геологической среды, и при втором процессе инверсии полного волнового поля выполняют построение свободной от многократных волн конечной модели физических свойств геологической среды; и
используют свободную от многократных волн конечную модель физических свойств геологической среды в качестве входных данных для построения изображения, или алгоритма построения скоростной модели, или при интерпретации области геологической среды для поиска или добычи углеводородов.
2. Способ по любому предшествующему пункту, в котором прогнозирование включает в себя моделирование Борна.
3. Способ по п. 2, в котором моделирование Борна включает в себя использование модели фона и модели отражательной способности.
4. Способ по п. 3, где способ включает в себя построение модели отражательной способности путем удаления модели фона из промежуточной обращенной модели геологической среды взятием производной конечной модели физических свойств геологической среды по вертикальному направлению.
5. Способ по п. 3, где способ включает в себя построение модели отражательной способности путем применения фильтрующего оператора к конечной модели физических свойств геологической среды.
6. Способ по п. 3, где способ включает в себя построение модели отражательной способности с использованием алгоритма миграции.
7. Способ по п. 5, в котором фильтрующий оператор представляет собой фильтр Баттерворта в волновочисловой области.
8. Способ по любому из пп. 2-7, где способ также включает в себя удаление вступлений прямых волн из входных сейсмических данных до моделирования Борна.
9. Способ по любому предшествующему пункту, в котором удаление включает в себя удаление многократных волн от границ раздела геологической среды из входных сейсмических данных адаптивным вычитанием.
10. Способ по любому одному из пп. 2-9, где способ также содержит освобождение многократных отражений от границ раздела геологической среды, образующихся при моделировании Борна, от паразитных волн путем применения функции конусности к трассам, включенным в сейсмические данные.
11. Способ по любому одному из пп. 2-10, в котором моделирование Борна выполняют при использовании синтетических данных, образованных на основании конечной модели физических свойств геологической среды в регулярно разнесенных узлах сетки.
12. Способ по п. 11, в котором протяженность интервала между регулярно разнесенными узлами сетки равна половине расстояния между сейсмическими приемниками в направлении поперек линий приема.
13. Способ по п. 1, в котором прогнозирование содержит:
образование первых синтетических данных с использованием конечной модели физических свойств геологической среды с граничными условиями свободной поверхности, наложенными поверх конечной модели физических свойств геологической среды;
образование вторых синтетических данных, состоящих только из однократных отражений, при использовании конечной модели физических свойств геологической среды с поглощающими граничными условиями, наложенными поверх конечной модели физических свойств геологической среды, и зеркальных источников и приемников; и
вычитание однократных отражений из первых синтетических данных для получения многократных волн от границ раздела геологической среды.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201562117227P | 2015-02-17 | 2015-02-17 | |
US62/117,227 | 2015-02-17 | ||
PCT/US2015/057292 WO2016133561A1 (en) | 2015-02-17 | 2015-10-26 | Multistage full wavefield inversion process that generates a multiple free data set |
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RU2017132164A3 RU2017132164A3 (ru) | 2019-03-18 |
RU2017132164A true RU2017132164A (ru) | 2019-03-18 |
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Country Status (10)
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US (1) | US10670750B2 (ru) |
EP (1) | EP3259620B1 (ru) |
KR (2) | KR20190075176A (ru) |
CN (1) | CN107407736B (ru) |
AU (1) | AU2015383134B2 (ru) |
CA (1) | CA2972033C (ru) |
MX (1) | MX2017007988A (ru) |
RU (1) | RU2017132164A (ru) |
SG (1) | SG11201704623RA (ru) |
WO (1) | WO2016133561A1 (ru) |
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US20160238722A1 (en) | 2016-08-18 |
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