Set retarded cement compositions and methods for well cementing

Patent · Tue Jul 17 00:00:00 EDT 1990

OSTI ID:6777516

Brothers, L E; Lindsey, D W; Terry, D T

This patent describes a method of cementing a zone in a subterranean formation penetrated by a wellbore; It comprises: forming a pumpable set retarded cement slurry comprising hydraulic cement, fresh water, particulate silica having a particle size in the range of from about 0.02 to about 0.5 micron and a set retarder comprising a copolymer consisting essentially of 2-acrylamido, 2-methylpropane sulfonic acid (AMPS) and acrylic acid having an average molecular weight below about 5000 and comprising from about 40 to about 60 mole percent AMPS; pumping the cement slurry into the zone by way of the wellbore, and allowing the cement slurry to set therein.

• Assignee: Halliburton Co., Duncan, OK (USA)
• Patent Number(s): US 4941536; A
• Application Number: PPN: US s 7-372976
• OSTI ID: 6777516
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
AQUEOUS SOLUTIONS
BUILDING MATERIALS
CEMENTING
CEMENTS
CHALCOGENIDES
CHEMICAL COMPOSITION
COPOLYMERS
DISPERSIONS
MATERIALS
MINERALS
MIXTURES
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POLYMERS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SOLUTIONS
WELL COMPLETION
WELLS