Patent ID: 11970656
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 6:
7. A method comprising:
placing a polymeric wellbore barrier adjacent to a casing to in a wellbore, wherein the polymeric wellbore barrier comprises a cured polymer including a resin and a transition metal compound catalyst, wherein the resin comprises one or more cyclic olefins, and wherein the transition metal compound catalyst comprises a catalyst having a structure selected from the group consisting of:, wherein M is ruthenium or osmium, wherein R and R1 are independently selected from hydrogen, C2-C20 alkenyl, C2-C20 alkynyl, C2-C20 alkyl, aryl, C1-C20 carboxylate, C1-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl or C1-C20 alkyl sulfinyl, wherein X and X′ independently comprise an anionic ligand, and wherein L, L1, L2, L3, and L4 independently comprise a neutral electron donor, and wherein NHC is an N-heterocyclic carbene ligand;
wherein the polymeric wellbore barrier hardens in the wellbore adjacent to the casing; and
exposing the polymeric wellbore barrier to hydrocarbon material to cause the polymeric wellbore barrier to swell in-situ and form a seal against the casing in the wellbore, wherein the polymeric wellbore barrier swells by more than 2% by volume upon contact with the hydrocarbon material, wherein the polymeric wellbore barrier is a secondary barrier to a primary cementing barrier.