Modern solids control: a centrifuge dewatering-process study.

Document Type

Article

Publication Date

1-1-1988

Abstract

The concept of a modern solids control system for drilling rigs is introduced and experimentally investigated. The system incorporates a conventional solids control arrangement followed by a diversion of part of the drilling mud for chemical conditioning and centrifugation. The dewatering effluent is returned to the mud system makeup water storage. The dewatered colloidal solids are then stabilized by being mixed with the shaker discharge and the surrounding soils. The system can provide an effective control of colloidal solids concentration in drilling muds. It can also minimize the volume of drilling waste. The new process was examined in full scale experiments to evaluate process efficiency and to identify the effects of field installation, operational variables, solids classification before dewatering, dilution, and the stability of the dewatering and its sensitivity to chemical dosage. In the chemical destabilization tests, a successful treatment was found for the flowline samples of five different drilling mud systems. The conceptual design of the modern solids control system is presented and discussed. This process is also related to conventional solids control and wastewater treatments.

Publication Source (Journal or Book title)

SPE DRILL. ENGNG.

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