Invention Grant
- Patent Title: Polyelectrolyte complexes as delayed gelling agents for oil and gas applications
- Patent Title (中): 聚电解质复合物作为油气应用的延迟胶凝剂
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Application No.: US11847833Application Date: 2007-08-30
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Publication No.: US07644764B2Publication Date: 2010-01-12
- Inventor: Cory Berkland , Mary Cordova , Jenn-Tai Liang , G. Paul Willhite
- Applicant: Cory Berkland , Mary Cordova , Jenn-Tai Liang , G. Paul Willhite
- Applicant Address: US KS Lawrence
- Assignee: University of Kansas
- Current Assignee: University of Kansas
- Current Assignee Address: US KS Lawrence
- Agency: Stinson Morrison Hecker LLP
- Main IPC: E21B33/138
- IPC: E21B33/138 ; C09K8/512
Abstract:
A gel-forming composition for reducing the permeability of a subterranean formation or zone comprising a water soluble polymer (e.g., Alcoflood® 935) and a polyelectrolyte gelling agent comprising a polycation (e.g., polyalkylene imine) and a polyanion (e.g., dextran sulfate) is provided. The gel-forming composition is used to delay gelation in the subterranean formation.
Public/Granted literature
- US20080223578A1 Polyelectrolyte Complexes as Delayed Gelling Agents for Oil and Gas Applications Public/Granted day:2008-09-18
Information query
