Animated sulfonated or sulformethylated lignins as cement fluid loss control additives

Patent · Tue May 07 04:00:00 EDT 1991

OSTI ID:5116233

Schilling, P

This patent describes a method of cementing a zone in a well penetrating a subterranean formation comprising injecting down the well and positioning in the zone to be cemented a hydraulic aqueous cement slurry composition. It comprises: a hydraulic cement, and the following expressed as parts by weight per 100 parts of the hydraulic cement, water from about 25 to 105 parts, and a fluid loss control additive comprising from about 0.5 to 2.5 parts of a compound selected from the group consisting of a sulfonated lignin and a sulfomethylated lignin, wherein the lignin has been aminated by reacting it with between about 2-5 moles of a polyamine and 2-5 moles of an aldehyde per 1,000g of the lignin, and 0.1 to 1.5 parts of a compound selected from the group consisting of sodium carbonate, sodium metasilicate, sodium phosphate, sodium sulfite and sodium naphthalene sulfonate and a combination thereof.

• Assignee: Westvaco Corp., New York, NY (USA)
• Patent Number(s): A; US 5012870
• Application Number: PPN: US 7-512269
• OSTI ID: 5116233
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
36 MATERIALS SCIENCE
360600 -- Other Materials
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ADDITIVES
AMINES
BUILDING MATERIALS
CARBOHYDRATES
CEMENTING
CEMENTS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
DISPERSIONS
INJECTION WELLS
KINETICS
LIGNIN
MATERIALS
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
POLYSACCHARIDES
REACTION KINETICS
SACCHARIDES
SLURRIES
SULFONES
SUSPENSIONS
WELL COMPLETION
WELLS