Difference between revisions of "Fracture analysis"
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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- | + | | frompg = 20-38 |
| − | | topg = 20- | + | | topg = 20-39 |
| 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 | ||
| Line 16: | Line 16: | ||
==Information provided== | ==Information provided== | ||
| − | Five types of fracture analysis provide the following types of information: | + | Five types of [[fracture]] analysis provide the following types of information: |
===Outcrop studies=== | ===Outcrop studies=== | ||
| Line 25: | Line 25: | ||
===Curvature analysis=== | ===Curvature analysis=== | ||
| − | * Strain distribution prediction based on geometry from structural mapping (fold shape and location on fold) | + | * Strain distribution prediction based on geometry from structural mapping ([[fold]] shape and location on fold) |
| − | * Natural fracture intensity prediction and, to a limited extent, fracture [[porosity]], given | + | * Natural fracture intensity prediction and, to a limited extent, fracture [[porosity]], given assumptions regarding rock behavior and [[Wikipedia:Deformation_(mechanics)#Strain|strain]] partitioning |
===Core analysis=== | ===Core analysis=== | ||
| Line 41: | Line 41: | ||
===Mathematical models=== | ===Mathematical models=== | ||
| − | * Prediction of compactive vs. dilatant rock behavior | + | * Prediction of [[Reservoir_quality#Compaction|compactive]] vs. dilatant rock behavior |
* Maps of fracture zones and variations in fracture intensity | * Maps of fracture zones and variations in fracture intensity | ||
* Prediction of fracture porosity, given assumptions regarding relationships between stress and strain and the fracture response of the rock | * Prediction of fracture porosity, given assumptions regarding relationships between stress and strain and the fracture response of the rock | ||
==How to use it== | ==How to use it== | ||
| − | Fracture analysis can help us define structural axes and trends or fracture-related reservoir properties. It can be applied in a variety of structural terranes and rock types, but it is especially important in brittle rock packages. To determine reservoir-property requires integrating geology, petrophysics, and reservoir engineering, and it is most often done by experienced specialists. | + | Fracture analysis can help us define structural axes and trends or fracture-related reservoir properties. It can be applied in a variety of structural [[Wikipedia:Terrane|terranes]] and rock types, but it is especially important in [[Brittleness|brittle]] rock packages. To determine reservoir-property requires integrating geology, petrophysics, and reservoir engineering, and it is most often done by experienced specialists. |
==Examples of use== | ==Examples of use== | ||
| Line 52: | Line 52: | ||
* Laubach, S. E., 1997, [http://archives.datapages.com/data/bulletns/1997/04apr/0604/0604.htm A method to detect natural fracture strike in sandstones]: AAPG Bulletin, vol. 81, p. 604–623. | * Laubach, S. E., 1997, [http://archives.datapages.com/data/bulletns/1997/04apr/0604/0604.htm A method to detect natural fracture strike in sandstones]: AAPG Bulletin, vol. 81, p. 604–623. | ||
* Laubach, S. E., 1989, Fracture Analysis of the Travis Peak Formation, Western Flank of the Sabine Arch, East Texas: University of Texas at Austin Bureau of Economic Geology Report of Investigations 185, 55 p. | * Laubach, S. E., 1989, Fracture Analysis of the Travis Peak Formation, Western Flank of the Sabine Arch, East Texas: University of Texas at Austin Bureau of Economic Geology Report of Investigations 185, 55 p. | ||
| − | * Kulander, B. R. | + | * Kulander, B. R., S. L. Dean, and B. J. Ward, Jr., 1990, Fractured Core Analysis: Interpretation, Logging, and Use of Natural and Induced Fractures in Core: [http://store.aapg.org/detail.aspx?id=1203 AAPG Methods in Exploration 8], 88 p. |
* Jamison, W. R., 1997, [http://archives.datapages.com/data/bulletns/1997/07jul/1110/1110.htm Quantitative evaluation of fractures on Monkshood anticline, a detachment fold in the foothills of western Canada]: AAPG Bulletin, vol. 81, 1110–1132. | * Jamison, W. R., 1997, [http://archives.datapages.com/data/bulletns/1997/07jul/1110/1110.htm Quantitative evaluation of fractures on Monkshood anticline, a detachment fold in the foothills of western Canada]: AAPG Bulletin, vol. 81, 1110–1132. | ||
* Aguilera, R., 1980, Naturally Fractured Reservoirs: Tulsa, PennWell, 703 p. | * Aguilera, R., 1980, Naturally Fractured Reservoirs: Tulsa, PennWell, 703 p. | ||
| − | * Coward, M. P. | + | * Coward, M. P., T. S. Daltaban, and H. Johnson, eds., Structural Geology in Reservoir Characterization: [http://sp.lyellcollection.org/content/127/1 Geological Society of London Special Publication 127], 266 p. |
| − | * Nelson, R. A., | + | * Nelson, R. A., and S. Serra, 1995, Vertical and lateral variations in fracture spacing in folded carbonate sections and its relation to locating horizontal wells: Journal of Canadian Petroleum Technology, vol. 34, p. 51–56, DOI: [https://www.onepetro.org/journal-paper/PETSOC-95-06-05 10.2118/95-06-05]. |
* Nelson, R. A., 1985, Geologic Analysis of Naturally Fractured Reservoirs: Houston, Gulf Publishing Co., 320 p. | * Nelson, R. A., 1985, Geologic Analysis of Naturally Fractured Reservoirs: Houston, Gulf Publishing Co., 320 p. | ||
* U.S. National Committee for Rock Mechanics, 1996, Rock Fractures and Fluid Flow: Washington, D., C., National Academy Press, 551 p. | * U.S. National Committee for Rock Mechanics, 1996, Rock Fractures and Fluid Flow: Washington, D., C., National Academy Press, 551 p. | ||
| − | * Wiltschko, D. V. | + | * Wiltschko, D. V., K. P. Corbett, M. Friedman, and J.-H. Hung, 1991, Predicting fracture connectivity and intensity within the Austin Chalk from outcrop fracture maps and scanline data: Transactions of the Gulf Coast Association of Geological Societies, vol. 41, p. 702–718. |
==See also== | ==See also== | ||
| − | + | ||
* [[Seismic data]] | * [[Seismic data]] | ||
* [[Tectonic modeling]] | * [[Tectonic modeling]] | ||
* [[Balanced cross sections]] | * [[Balanced cross sections]] | ||
| − | * [[Dipmeter | + | * [[Dipmeter]] |
* [[Fault seal-conduit studies]] | * [[Fault seal-conduit studies]] | ||
* [[Petrofabrics]] | * [[Petrofabrics]] | ||
| Line 77: | Line 77: | ||
[[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]] | ||
Latest revision as of 15:30, 3 February 2022
| Exploring for Oil and Gas Traps | |
| |
| Series | Treatise in Petroleum Geology |
|---|---|
| Part | Predicting the occurrence of oil and gas traps |
| Chapter | Exploring for structural traps |
| Author | R.A. Nelson, T.L. Patton, S. Serra |
| Link | Web page |
| Store | AAPG Store |
Information provided
Five types of fracture analysis provide the following types of information:
Outcrop studies
- Regional-scale to prospect-scale fracture orientation, distribution, width, and spacing
- Fracture size and morphology
Curvature analysis
- Strain distribution prediction based on geometry from structural mapping (fold shape and location on fold)
- Natural fracture intensity prediction and, to a limited extent, fracture porosity, given assumptions regarding rock behavior and strain partitioning
Core analysis
- Downhole fracture distribution, orientation, size, width, spacing, and morphology
- Relationship between petrophysical properties of fractures and matrix
Log analysis
- Detection of fractures in a nonquantitative manner
- Orientation of a selected fracture population
- In some cases, determination of the fluid or mineral filling in fractures
Mathematical models
- Prediction of compactive vs. dilatant rock behavior
- Maps of fracture zones and variations in fracture intensity
- Prediction of fracture porosity, given assumptions regarding relationships between stress and strain and the fracture response of the rock
How to use it
Fracture analysis can help us define structural axes and trends or fracture-related reservoir properties. It can be applied in a variety of structural terranes and rock types, but it is especially important in brittle rock packages. To determine reservoir-property requires integrating geology, petrophysics, and reservoir engineering, and it is most often done by experienced specialists.
Examples of use
- Narr, W., 1996, Estimating average fracture spacing in subsurface rock: AAPG Bulletin, vol. 80, p. 1565–1586.
- Laubach, S. E., 1997, A method to detect natural fracture strike in sandstones: AAPG Bulletin, vol. 81, p. 604–623.
- Laubach, S. E., 1989, Fracture Analysis of the Travis Peak Formation, Western Flank of the Sabine Arch, East Texas: University of Texas at Austin Bureau of Economic Geology Report of Investigations 185, 55 p.
- Kulander, B. R., S. L. Dean, and B. J. Ward, Jr., 1990, Fractured Core Analysis: Interpretation, Logging, and Use of Natural and Induced Fractures in Core: AAPG Methods in Exploration 8, 88 p.
- Jamison, W. R., 1997, Quantitative evaluation of fractures on Monkshood anticline, a detachment fold in the foothills of western Canada: AAPG Bulletin, vol. 81, 1110–1132.
- Aguilera, R., 1980, Naturally Fractured Reservoirs: Tulsa, PennWell, 703 p.
- Coward, M. P., T. S. Daltaban, and H. Johnson, eds., Structural Geology in Reservoir Characterization: Geological Society of London Special Publication 127, 266 p.
- Nelson, R. A., and S. Serra, 1995, Vertical and lateral variations in fracture spacing in folded carbonate sections and its relation to locating horizontal wells: Journal of Canadian Petroleum Technology, vol. 34, p. 51–56, DOI: 10.2118/95-06-05.
- Nelson, R. A., 1985, Geologic Analysis of Naturally Fractured Reservoirs: Houston, Gulf Publishing Co., 320 p.
- U.S. National Committee for Rock Mechanics, 1996, Rock Fractures and Fluid Flow: Washington, D., C., National Academy Press, 551 p.
- Wiltschko, D. V., K. P. Corbett, M. Friedman, and J.-H. Hung, 1991, Predicting fracture connectivity and intensity within the Austin Chalk from outcrop fracture maps and scanline data: Transactions of the Gulf Coast Association of Geological Societies, vol. 41, p. 702–718.
See also
- Seismic data
- Tectonic modeling
- Balanced cross sections
- Dipmeter
- Fault seal-conduit studies
- Petrofabrics
External links
| find literature about Fracture analysis |
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