US Patent Issued to CNPC USA, BEIJING HUAMEI, CHINA NATIONAL PETROLEUM on March 18 for "Formulation and setup method of in-situ dissolvable plug" (Texas Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,645, issued on March 18, was assigned to CNPC USA Corp. (Houston), BEIJING HUAMEI INC. (Beijing) and CHINA NATIONAL PETROLEUM Corp. (Beijing).

"Formulation and setup method of in-situ dissolvable plug" was invented by Lei Zhao (Houston), Jiaxiang (Jason) Ren (Houston), Jianpeng Yue (Houston) and Peng Cheng (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "The patent application discloses a plug useable for isolating sections of a wellbore. The in-situ dissolvable plug comprises a cylindrical body having a backup piece at least at one end of the cylindrical body, a tube and a cylindrical body. The tube may extend through the cylindrical body a...