2015 Fiscal Year Final Research Report
Evaluation of permeability change in proppant-treated rock fractures for development of shale gas and EGS
| Project/Area Number |
25630413
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Earth system and resources engineering
|
|---|
| Research Institution | Ehime University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | 岩盤 / シェールガス / 地熱EGS / プロパント / 透水特性 |
|---|
| Outline of Final Research Achievements |
In order to efficiently and sustainably extract shale gas from deep subsurface, the permeability of the proppant-treated fractures are examined in detail. In this work, we have observed the evolution of permeability in the proppants and the proppant-treated fractures under the simulated stress and temperature conditions. In addition, the mechanisms of the permeability change were investigated. The experimental results show that the permeability in the proppants little changes for about 100 days, while it decreases with time significantly in case of the proppant-treated fractures. The reduction may be the interpenetration of the proppants and the mineral re-precipitation.
|
| Free Research Field |
岩盤力学
|
