公开(公告)号：WO1991006511A1

公开(公告)日：1991-05-16

申请号：PCT/US1990004824

申请日：1990-08-24

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  FALK, David, O. ,  BEAZLEY, Phillip, M. ,  DORMISH, Frank, L. ,  THOMPSON, Ronald, G.

IPC: C02F05/10

CPC classification number: C09K8/528 ,  C02F5/10

Abstract: A relatively high molecular weight polyvinyl sulfonate and a process for inhibiting scale deposition, particularly inorganic sulfate such as barium sulfate, wherein an aqueous fluid present in or produced from a subterranean formation is contacted with an aqueous solution having a relatively high molecular weight polyvinyl sulfonate dissolved therein. The aqueous fluid has a pH equal to or less than 6.0 and the polyvinyl sulfonate has a molecular weight of from about 9,000 to about 30,000.