TREA

Recovery of high viscosity native crude samples

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Information

  • Patent Grant
  • T984003
  • Patent Number
    T984,003
  • Date Filed
    Monday, September 25, 1978
    46 years ago
  • Date Issued
    Tuesday, July 3, 1979
    45 years ago
  • US Classifications
  • International Classifications
    • E21B4700
Information
Abstract
native bottomhole samples of very viscous crude oil (bitumen, tar) are obtained by injecting water plus a suitable surfactant mixture down a hollow sucker rod whereby mixing occurs downhole, producing a resultant oil-in-water emulsion, and recovering the crude oil from the emulsion. Contamination of the crude oil sample with light hydrocarbons is avoided.
Description