 |
| Titel |
Estimation on in situ transport properties of sedimentary formation using a stress-history-dependent model |
| VerfasserIn |
Wen-Jie Wu, Jia-Jyun Dong |
| Konferenz |
EGU General Assembly 2013
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250073367
|
|
|
|
|
|
| Zusammenfassung |
| The relationship among porosity, permeability and depth is crucial for sedimentary basin analysis, including compaction, decompaction and anomaly pressure distribution of geological unit. Conventionally, porosity-depth relation can be derived from well logging which is expensive, whereas permeability-depth relation is difficult to be estimated. In this study, a novel method is proposed to estimate the in situ transport properties of sedimentary formation based on laboratory core measurement of porosity and permeability. A stress-history- dependent model of transport properties, which can be used efficiently to evaluate the porosity/permeability-depth relation, is accordingly obtained. The Estimation of porosity-depth relation of sedimentary formation near a thrusting faulting is validated using well logging data. Further more, we demonstrated that this method can be applied to estimate the porosity-depth relation of the sedimentary formation which is deeply buried in the footwall of a thrusting fault using the cores from the uplifted hanging wall. Finally, the permeability-depth relation of rock matrix can be estimated easily with the laboratory-derived porosity-permeability relation if the porosity logging is available. Utilizing a pseudo-continuum fracture model (Oda’s model), the permeability contributed from the fracture network can also be estimated. The permeability-depth relation of the sedimentary formation can be evaluated accordingly. |
|
|
|
|
|
|