发明名称 |
Method of bulking an in situ oil shale retort substantially full of fragmented shale |
摘要 |
A method for forming an in situ oil shale retort in a subterranean formation containing oil shale is provided. The in situ oil shale retort has a top boundary, generally vertically extending side boundaries, and a bottom boundary of unfragmented formation. A first portion of formation is excavated for forming at least one void within the boundaries, leaving a remaining portion of formation within the boundaries adjacent the void or voids. A remaining portion of unfragmented formation within the retort boundaries is explosively expanded toward such a void for forming a fragmented permeable mass of formation particles containing oil shale in the retort. A void space remains between the upper surface of the fragmented mass and overlying unfragmented formation. A lower portion of the overlying formation is explosively expanded downwardly toward the void space for substantially filling the retort with formation particles. A sill pillar of unfragmented formation is left extending between an air level base of operation and the top boundary of the retort being formed.
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申请公布号 |
US4360233(A) |
申请公布日期 |
1982.11.23 |
申请号 |
US19800202072 |
申请日期 |
1980.10.30 |
申请人 |
OCCIDENTAL OIL SHALE, INC. |
发明人 |
RICKETTS, THOMAS E. |
分类号 |
E21B43/248;E21C41/24;(IPC1-7):E21C41/10 |
主分类号 |
E21B43/248 |
代理机构 |
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