Cnpc USA Corporation

China National Petroleum Corporation

Beijing Huamei Inc.

Beijing Huamel, Inc.

Peixiang Xing

Yu Liu

Jiaxiang Ren

Peng Cheng

Yonghong Wang

Zhenzhou Yang

Jiaxiang (Jason) Ren

Min (Mark) Yuan

The patent application discloses a degradable downhole tool member for hydrocarbon resource recovery. The downhole tool member comprises a shaped body comprising a degradable polymer matrix, wherein the downhole tool member, when held in downhole fluid at about 80° C., has an initial mass loss about 14% for a holding period of about 2 days in a pressure holding test.

Molded articles of modified polyglycolic acid for degradable downhole tools application

Co-cured blends of fluoroelastomers of tetrafluoroethylene-propylene copolymer with cure site monomer and terpolymers of Vinylidene fluoride (VDF), Hexafluoropropylene (HFP) and Tetrafluoroethylene (TFE) with peroxide as initiator and coagent TAIC as crosslinker show improved curing performance, improved mechanical properties and improved compression set as well. The co-cured fluoroelastomers show improved chemical resistance to the solvent aging systems and better retention of mechanical properties after aging at high temperature in the solvents system.

Co-cured fluoroelastomers with improved chemical resistance

The patent application discloses a degradable polymers compounds. The polymer compounds comprises product of blends of polyglycolic acid and polylactic acid in a weight ratio of from about 99/1 to about 50/50 in mixture with a compatibilizer poly(lactic-co-glycolic acid), wherein the compounded product has a tensile strength of at least about 12,000 psi.

Modified polyglycolic acid and molded articles for degradable downhole tools application

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Houston, TX, United States of America

Peixiang Xing