Inorganic Component Is Soluble In The Well Treating Medium Patents (Class 507/277)
  • Method and combination for materials for releasing a stuck pipe
    Patent number: 5415230
    Abstract: A method and combination of materials for freeing stuck pipe involves first the spotting of a clear brine, preferably calcium chloride, calcium bromide or zinc bromide, or mixtures thereof, for a given period of time, preferably at least about 8 hours, in the stuck region of the pipe, followed by the spotting of a spotting agent selected from wetting agents, surfactants, lubricants, or mixtures thereof, in the stuck region of the pipe.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: May 16, 1995
    Assignee: Baroid Technology, Inc.
    Inventors: James V. Fisk, Jr., Jeffrey P. Kirsner