|Author||Hamphill, T. ♦ Velenziano, R. ♦ Bale, P. ♦ Sketchler, B.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||PETROLEUM ♦ DRILLING FLUIDS ♦ OPTIMIZATION ♦ GULF OF MEXICO ♦ WELL DRILLING ♦ OIL WELLS ♦ ENHANCED RECOVERY ♦ CATIONS ♦ CHEMICAL COMPOSITION ♦ CLAYS ♦ DRILL BITS ♦ FILTRATION ♦ FLUID FLOW ♦ PERMEABILITY ♦ POLYMERS ♦ WELL STIMULATION ♦ ATLANTIC OCEAN ♦ CARIBBEAN SEA ♦ CHARGED PARTICLES ♦ DRILLING ♦ DRILLING EQUIPMENT ♦ EQUIPMENT ♦ FLUIDS ♦ IONS ♦ SEAS ♦ SEPARATION PROCESSES ♦ STIMULATION ♦ SURFACE WATERS ♦ WELLS 020300* -- Petroleum-- Drilling & Production|
|Abstract||A cationic water-based mud reduced bit balling and increased rates of penetration (ROP ) in several Gulf of Mexico wells where highly permeable sands and dispersive formation clays and shales typically cause drilling problems. The cationic polymers adsorb on the negatively charged sites on shales and clays and immediately inhibit reactive formation solids. The filtration and mud cake qualities illustrate that effective filtration control is obtainable with the cationic drilling fluid. This paper reports that field results indicate that the cationic polymer drilling fluid system: Improves shale stabilization in soft-to-medium hard shales; Minimizes or eliminates bit balling; Increases penetration rates in softer clays and shales, particularly when drilled with polycrystalline diamond compact (PDC) bits; Exhibits stable mud properties, including filtration control; Is tolerant of solids contamination; Exhibits good permeability plugging/filter cake characteristics; and, Is nontoxic.|
|Learning Resource Type||Article|
|Publisher Place||United States|
|Journal||Oil and Gas Journal|
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