Drilling fluid containing a copolymer filtration control agent

Patent · Tue Oct 15 00:00:00 EDT 1985

OSTI ID:5945049

Lucas, J M

The invention relates to an aqueous drilling fluid composition, a filtration control agent for utilization in said aqueous drilling fluid, and a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, by utilization of a copolymer of: a (meth) acrylamido alkyl sulfonic acid or alkali metal salt thereof; and N, N-dialkyl (meth) acrylamide. The copolymer may be cross-linked with N,N'-methylenebisacrylamide or other appropriate cross-linking agent.

• Assignee: Milchem Incorporated
• Patent Number(s): US 4547299
• OSTI ID: 5945049
• Resource Relation: Patent File Date: Filed date 15 Mar 1984; Other Information: PAT-APPL-590029
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
DRILLING FLUIDS
CHEMICAL COMPOSITION
CORROSION INHIBITORS
NATURAL GAS WELLS
SCALE CONTROL
OIL WELLS
ACRYLAMIDE
ALKALI METAL COMPOUNDS
AQUEOUS SOLUTIONS
CHLORIDES
COPOLYMERS
CORROSION PROTECTION
CROSS-LINKING
FILTRATION
SULFONIC ACIDS
AMIDES
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
CONTROL
DISPERSIONS
FLUIDS
HALIDES
HALOGEN COMPOUNDS
MIXTURES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
POLYMERIZATION
POLYMERS
SEPARATION PROCESSES
SOLUTIONS
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing