Drilling fluid dewatering. Economic evaluation with case history

Document Type

Article

Publication Date

3-1-1990

Abstract

The oil industry is undergoing numerous changes triggered by recent environmental regulations as promulgated by the various oil producing states. Particularly in the area of drilling where soil and clay fines (2-5 microns) are generated by the drill bit and must be separated from the drilling fluid. A new process is being employed to separate these fines. The drilling fluid is diluted, undergoes a pH reduction, and finally flocculating polymers are introduced. The mixture produces flocs able to be separated from the drilling fluid using a high speed decanting centrifuge. The soil and clay solids are discarded while the clarified liquid is returned to the drilling fluid system. Case histories of on-site applications are reviewed. Process particulars discussed include treatment chemicals and centrifuges, processing equipment flow schematics, and processing rates. Processing difficulties and limitations are discussed.

Publication Source (Journal or Book title)

Society of Petroleum Engineers of AIME, (Paper) SPE

This document is currently not available here.

Share

COinS