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1. (WO2018037374) WEIGHT MATERIAL RECOVERY AND REUSE METHOD FROM DRILLING WASTE

Pub. No.:    WO/2018/037374    International Application No.:    PCT/IB2017/055112
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Fri Aug 25 01:59:59 CEST 2017
IPC: E21B 21/06
B01D 21/00
B07C 5/04
E21B 21/01
Applicants: RECOVER ENERGY SERVICES INC.
Inventors: STEGER, Greg
COSTON, Brian
ROSS, Stan
Title: WEIGHT MATERIAL RECOVERY AND REUSE METHOD FROM DRILLING WASTE
Abstract:
A process for recovering weight material for reuse in drilling fluids from a previously unavailable source of feed stock. The process described herein includes a process of cleaning drilling waste through either low temperature thermal or solvent washing to remove hydrocarbon or water based drilling fluid contamination. The cleaned drilling waste, substantially free of liquids is sifted and the bulk fraction is further treated by employing conventional separation technology to recover a high gravity solids phase while discarding low gravity solids phase as tailings. Additionally, described is a process where the recovered high gravity solids phase can be reused as a high density weight material, or lower cost weight material, either of which is desirable to the drilling of modern oil and gas wells. The process of adding drilling fluid back into the recovered weight material to simplify the process of transporting the weight material into an active drilling fluid system is also described.