- 专利标题: Crosslinking of swellable polymer with PEI
-
申请号: US16694004申请日: 2019-11-25
-
公开(公告)号: US11466198B2公开(公告)日: 2022-10-11
- 发明人: Ahmad Moradi-Araghi , Min Cheng , Riley B. Needham , James H. Hedges , Ramesh S. Sarathi , Faye L. Scully , Terry M. Christian , Huili Guan , Cory Berkland , Jenn-Tai Liang
- 申请人: CONOCOPHILLIPS COMPANY , University of Kansas
- 申请人地址: US TX Houston; US KS Lawrence
- 专利权人: CONOCOPHILLIPS COMPANY,University of Kansas
- 当前专利权人: CONOCOPHILLIPS COMPANY,University of Kansas
- 当前专利权人地址: US TX Houston; US KS Lawrence
- 代理机构: Boulware & Valoir
- 主分类号: C09K8/588
- IPC分类号: C09K8/588 ; E21B33/138 ; E21B43/16
摘要:
The invention is directed to stable and labile crosslinked water swellable polymeric microparticles that can be further gelled, methods for making same, and their various uses in the hygiene and medical arts, gel electrophoresis, packaging, agriculture, the cable industry, information technology, in the food industry, papermaking, use as flocculation aids, and the like. More particularly, the invention relates to a composition comprising expandable polymeric microparticles having labile crosslinkers and stable crosslinkers, said microparticle mixed with a fluid and an unreacted tertiary crosslinker comprising PEI or other polyamine based tertiary crosslinker that is capable of further crosslinking the microparticle on degradation of the labile crosslinker and swelling of the particle, so as to form a stable gel. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric microparticles are injected into a well and when the heat and/or pH of the well cause degradation of the labile crosslinker and when the microparticle expands, the tertiary crosslinker crosslinks the polymer to form a stable gel, thus diverting water to lower permeability regions and improving oil recovery.
公开/授权文献
- US20200095496A1 CROSSLINKING OF SWELLABLE POLYMER WITH PEI 公开/授权日:2020-03-26