公开(公告)号：US20140318776A1

公开(公告)日：2014-10-30

申请号：US14350077

申请日：2012-12-18

Applicant: Schlumberger Technology Corporation

Inventor： Clara Carelli ,  Sylvaine Le Roy-Delage

IPC: E21B33/13

CPC classification number: E21B33/13 ,  C04B24/2652 ,  C04B28/02 ,  C04B28/04 ,  C04B28/06 ,  C04B28/32 ,  C04B28/34 ,  C04B2103/0049 ,  C09K8/426 ,  C09K8/428 ,  C09K8/467 ,  Y02W30/92 ,  Y02W30/94 ,  C04B14/047 ,  C04B18/08 ,  C04B18/141 ,  C04B41/5076

Abstract: A remedial method for repairing a damaged cement sheath, especially for use in wells in which fluids with a pH lower than 6 are injected, stored or extracted, comprises placing an acid swellable composition adjacent to the cement sheath. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole- wall interface, the composition may be injected into or adjacent to the cement sheath so that the material swells when contacted by acid gases, including carbon dioxide and hydrogen sulfide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation.

Abstract translation: 用于修复损坏的水泥护套的补救方法，特别是用于注入，储存或提取pH低于6的流体的井中的方法包括将酸溶胀组合物放置在水泥护套附近。 在水泥基体破坏或水泥/套管界面或水泥/井壁 - 界面之间的粘合破坏的情况下，可以将组合物注入或邻近水泥护套，使得材料在与酸性气体接触时膨胀， 包括二氧化碳和硫化氢。 膨胀密封水泥基体中的空隙，或沿着粘合界面，由此恢复区带隔离。

公开(公告)号：US20140238676A1

公开(公告)日：2014-08-28

申请号：US13776877

申请日：2013-02-26

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Clara Carelli ,  Jesse C. Lee ,  Syed A. Ali

IPC: C04B22/06 ,  E21B33/13

CPC classification number: C09K8/467 ,  C04B28/02 ,  Y02W30/96 ,  C04B18/22 ,  C04B2103/406 ,  C04B2103/408 ,  C04B2103/50 ,  C04B24/32

Abstract: A cement slurry composition is described as having cement, water, and organic polymeric particles. The composition also includes non-ionic surfactants, which may contain ethoxylate groups or contain both ethoxylate groups and propyxlate groups in the hydrophilic part. The non-ionic surfactant acts to disperse the hydrophobic polymeric particles in the slurry and to reduce or prevent foaming. The cement slurry composition is prepared and then pumped into the subterranean well and placed in a zone of the subterranean well. Time is then allowed for the cement slurry composition to set into a solid mass in the zone.

Abstract translation: 水泥浆组合物被描述为具有水泥，水和有机聚合物颗粒。 组合物还包括非离子表面活性剂，其可以在亲水部分中含有乙氧基化物基团或含有乙氧基化物基团和丙酸酯基团。 非离子表面活性剂用于将疏水性聚合物颗粒分散在浆料中并减少或防止起泡。 制备水泥浆组合物，然后泵送到地下井中并置于地下井的一个区域中。 然后允许水泥浆料组合物在该区域中固化成块。