公开(公告)号：US10851286B2

公开(公告)日：2020-12-01

申请号：US14847734

申请日：2015-09-08

Applicant: CONOCOPHILLIPS COMPANY ,  University of Kansas

Inventor： Huili Guan ,  Cory Berkland ,  Ahmad Moradi-Araghi ,  Jenn-Tai Liang ,  Terry M. Christian ,  Riley B. Needham ,  Min Cheng

IPC: C09K8/588 ,  C09K8/50 ,  C09K8/512

Abstract: The disclosure is directed to methods and compositions delaying the gelation of polymers in water flooding by sequentially or co-injecting a carboxylate-containing polymer solution, a gel-delaying polymer, and gelation agent into a hydrocarbon reservoir. Delays of weeks are observed.

公开(公告)号：US10752826B2

公开(公告)日：2020-08-25

申请号：US15708034

申请日：2017-09-18

Applicant: ConocoPhillips Company ,  University of Kansas

Inventor： Huili Guan ,  Cory Berkland ,  Ahmad Moradi-Araghi ,  Jenn-Tai Liang ,  Terry M. Christian ,  Riley B. Needham ,  Min Cheng ,  Faye Lynn Scully ,  James H. Hedges

IPC: C09K8/22 ,  C09K8/588 ,  C08L1/28 ,  C08L5/00

Abstract: The instant application relates to nanogels or compositions that hold multivalent metal ions until some level of nanogel degradation has occurred, then slowly release the multivalent metal ions for gelation with carboxylate containing polymers. Compositions comprising such nanogels, together with polymers that can be crosslinked with multivalent metal ions, allow the deployment of such mixtures in various applications, and greatly increased gelation times.

公开(公告)号：US09644136B2

公开(公告)日：2017-05-09

申请号：US14173901

申请日：2014-02-06

Applicant: ConocoPhillips Company ,  University of Kansas

Inventor： Huili Guan ,  Cory Berkland ,  Ahmad Moradi-Araghi ,  Jenn-Tai Liang ,  Terry M. Christian ,  Riley B. Needham ,  James H. Hedges ,  Min Cheng ,  Faye L. Scully

IPC: C09K8/588 ,  E21B43/16 ,  C09K8/594

CPC classification number: C09K8/588 ,  C08F220/56 ,  C08F2800/10 ,  C08L33/26 ,  C09K8/594 ,  E21B33/138 ,  E21B43/164 ,  Y02P90/70

Abstract: The invention is directed to polymers that self-crosslink at acidic pH or can be crosslinked by phenolic agents in brine. Such polymers have lower viscosity and can be pumped deep into reservoirs, where they will cross link in situ, thus increasing their viscosity and/or form a gel and blocking thief zones. Methods of making and using such polymers are also provided.