CONTROL OF SUSTAINED CASING PRESSURE IN WELLBORE ANNULI
申请人:ALBEMARLE CORPORATION
公开号:US20160289527A1
公开(公告)日:2016-10-06
This invention provides a method for minimizing or relieving a sustained casing pressure in an annulus of a wellbore, where the annulus contains a first fluid having a density. The method comprises introducing a second fluid into the annulus. The second fluid has a density greater than the density of the first fluid and the second fluid is immiscible with the first fluid. The method is characterized in that the second fluid comprises at least one halogen-containing organic compound. The halogen-containing organic compound has one or more halogen atoms selected from fluorine, chlorine, bromine, and iodine, with the proviso that at least one of the halogen atoms is chlorine, bromine, or iodine.
Scope and Stereochemistry of [2+2] Photocycloadditions Between Cyclopentenones and 1,2-Dichlorocycloalkenes
作者:Alan B. Brown、Scott E. McKay、Daniel E. Meeroff
DOI:10.1080/00397919708006802
日期:1997.6
Abstract Cyclopentenone and dichlorocycloalkenes give [2+2] adducts whose stereochemistry (from modern NMR) is mostly cis, anti, cis; cis, syn, cis minor adducts are also found. Cophotolysis of dichlorocyclohexene and cycloheptanocyclopentenone does not give any adduct.