- 专利标题: Degradable cement compositions containing degrading materials and methods of cementing in wellbores
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申请号: US11830559申请日: 2007-07-30
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公开(公告)号: US07677312B2公开(公告)日: 2010-03-16
- 发明人: Curtis L. Boney , Simon G. James
- 申请人: Curtis L. Boney , Simon G. James
- 申请人地址: US TX Sugar Land
- 专利权人: Schlumberger Technology Corporation
- 当前专利权人: Schlumberger Technology Corporation
- 当前专利权人地址: US TX Sugar Land
- 代理商 David Cate; Rachel Greene; Robin Nava
- 主分类号: E21B43/267
- IPC分类号: E21B43/267 ; E21B33/00
摘要:
A temporary matrix is provided in treating a subterranean formation by providing a composition comprising a matrix forming material and a matrix degrading material. The matrix degrading material is capable of degrading the matrix after a period of time when subjected to existing or induced conditions of the subterranean formation. The composition is placed into a wellbore penetrating the subterranean formation. The composition is allowed to form a matrix within the wellbore, whereby the matrix at least one of significantly reduces the passage of fluid across or near the matrix or provides structural strength. A treatment operation is performed on the subterranean formation or wellbore and the degrading material is allowed to degrade the matrix.