Cationic polymer drilling fluid can sometimes replace oil-based mud

Journal Article · Mon Mar 16 04:00:00 EST 1992 · Oil and Gas Journal; (United States)

OSTI ID:5721663

Beihoffer, T W; Dorrough, D S; Deem, C K; Schmidt, D D; Bray, R P ^[1]

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1. Amoco Production Research, Tulsa, OK (US)

A recently developed cationic polymer/brine drilling fluid (CBF) system, tested in a number of wells drilled in the U.S. and the North Sea, can replace oil-based fluids in certain applications. This paper reports that the field tests have shown CBF to be more inhibitive than other water-based muds used in the same areas. To date, the primary applications have been in large diameter hole sections drilled through Tertiary shales with high semectite clay content. The CBF system uses a cationic polymer and potassium chloride for shale inhibition, starch for fluid loss control, and a biopolymer for rheology. Tests have been developed to quantitatively measure the concentrations of the inhibitive additives in the fluid, allowing the fluid to be run with a high degree of control.

• OSTI ID: 5721663
• Journal Information: Oil and Gas Journal; (United States), Journal Name: Oil and Gas Journal; (United States) Vol. 90:11; ISSN OIGJA; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
04 OIL SHALES AND TAR SANDS
040401 -- Oil Shales & Tar Sands-- In Situ Methods
True & Modified
ADDITIVES
ATLANTIC OCEAN
BITUMINOUS MATERIALS
BRINES
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CLAYS
DEVELOPED COUNTRIES
DRILLING
DRILLING FLUIDS
ENERGY SOURCES
FIELD TESTS
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUELS
MATERIALS
NORTH AMERICA
NORTH SEA
OIL SHALES
OIL WELLS
POLYMERS
RESERVOIR FLUIDS
ROCKS
SEAS
SEDIMENTARY ROCKS
SHALES
STIMULATION
SURFACE WATERS
TESTING
USA
WELL DRILLING
WELL STIMULATION
WELLS