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| | part = Predicting the occurrence of oil and gas traps | | | part = Predicting the occurrence of oil and gas traps |
| | chapter = Exploring for structural traps | | | chapter = Exploring for structural traps |
− | | frompg = 20-1 | + | | frompg = 20-27 |
− | | topg = 20-70 | + | | topg = 20-28 |
| | author = R.A. Nelson, T.L. Patton, S. Serra | | | author = R.A. Nelson, T.L. Patton, S. Serra |
| | link = http://archives.datapages.com/data/specpubs/beaumont/ch20/ch20.htm | | | link = http://archives.datapages.com/data/specpubs/beaumont/ch20/ch20.htm |
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| * Refraction | | * Refraction |
| | | |
− | '''2-D reflection seismic data''' provide cross-sectional views in both the dip and strike directions. Data on the lines are a mixture of both in-plane and out-of-plane reflectors. 2-D reflection seismic data are most important in the earlier stages of an exploration program, especially in frontier basins. | + | '''2-D reflection seismic data''' provide cross-sectional views in both the [[dip]] and strike directions. Data on the lines are a mixture of both in-plane and out-of-plane reflectors. 2-D reflection seismic data are most important in the earlier stages of an exploration program, especially in frontier basins. |
| | | |
− | '''3-D reflection seismic data''' provide resolved cross-sectional views along any azimuth within the survey area. Time “slices” (maps) on any horizon can also be generated. The nature and location of out-of-plane features can be more accurately determined. Because of the high acquisition costs, 3-D seismic techniques normally are used only to more accurately define individual prospects. | + | '''3-D reflection seismic data''' provide resolved cross-sectional views along any [[azimuth]] within the survey area. Time “slices” (maps) on any horizon can also be generated. The nature and location of out-of-plane features can be more accurately determined. Because of the high acquisition costs, 3-D seismic techniques normally are used only to more accurately define individual prospects. |
| | | |
| '''Shear wave data''', in combination with conventional compressional wave data, can provide information on lithology, [[fracture]]s, and the presence of hydrocarbons. | | '''Shear wave data''', in combination with conventional compressional wave data, can provide information on lithology, [[fracture]]s, and the presence of hydrocarbons. |
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| * Interpretation on each line should proceed from well-imaged, well-constrained portions of the line toward areas of poorer constraint. Use symbols for varying quality of interpretation. | | * Interpretation on each line should proceed from well-imaged, well-constrained portions of the line toward areas of poorer constraint. Use symbols for varying quality of interpretation. |
| * Map multiple horizons. | | * Map multiple horizons. |
− | * Map and contour fault surfaces critical to closure. | + | * Map and [[contour]] fault surfaces critical to closure. |
| * Integrate fault and horizon contours. | | * Integrate fault and horizon contours. |
− | * In thrust, rift, and extensional terranes, emphasize dip line interpretation; in foreland and wrench terranes, equally emphasize strike line interpretation. | + | * In thrust, rift, and extensional terranes, emphasize dip line interpretation; in foreland and [http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=term%20name&filter=wrench%20fault wrench] terranes, equally emphasize strike line interpretation. |
| * Generate depth conversions during iterative interpretations. | | * Generate depth conversions during iterative interpretations. |
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| | | |
| ==See also== | | ==See also== |
− | * [[Prospect delineation techniques and tools]] | + | * [[Forward modeling of seismic data]] |
− | * [[Tectonic modeling]] | + | * [[Displaying seismic data]] |
− | * [[Balanced cross sections]] | + | * [[Seismic data - creating an integrated structure map]] |
− | * [[Dipmeter analysis]] | + | * [[Seismic data: building a stratigraphic model]] |
− | * [[Fault seal-conduit studies]] | + | * [[Seismic data acquisition on land]] |
− | * [[Petrofabrics]] | + | * [[Marine seismic data acquisition]] |
− | * [[Fracture analysis]] | + | * [[Seismic interpretation]] |
| + | * [[Seismic inversion]] |
| + | * [[Seismic migration]] |
| + | * [[Seismic processing basics]] |
| + | * [[Vertical and lateral seismic resolution and attenuation]] |
| + | * [[Three-dimensional seismic method]] |
| + | * [[3-D seismic data: the data cube]] |
| + | * [[Components of a 3-D seismic survey]] |
| + | * [[3-D seismic data views]] |
| + | * [[Seismic data - mapping with two-dimensional data]] |
| + | * [[Phases of a seismic project]] |
| + | * [[Seismic data interpretation - recurring themes]] |
| | | |
| ==External links== | | ==External links== |
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| [[Category:Predicting the occurrence of oil and gas traps]] | | [[Category:Predicting the occurrence of oil and gas traps]] |
| [[Category:Exploring for structural traps]] | | [[Category:Exploring for structural traps]] |
| + | [[Category:Treatise Handbook 3]] |