Cementing oil and gas wells

Patent · Tue Dec 31 00:00:00 EST 1991

OSTI ID:5467064

Bloys, J B; Wilson, W N; Bradshaw, R D

This patent describes a cement composition for cementing in a well penetrating subterranean formations and having an aqueous drilling fluid containing at least one cement retarder. It comprises a major proportion of the drilling fluid from the well as it was drilled the fluid having a density in the range of about 9.0 - 18.0 ppg; water; a lesser proportion of dry cementitious material; about 0.5 to about 10.0 ppb of a dispersant selected from the group consisting of sulfonated styrene maleic anhydride, sulfonated styrene imide, and sulfonate styrene itaconic acid; and a compatible accelerator selected from the group consisting of acetic acid; the first 4 carbon esters thereof; acetamide; monoethanolamine; and diethanolamine.

• Assignee: Atlantic Richfield Co., Los Angeles, CA (United States)
• Patent Number(s): US 5076852; A
• Application Number: PPN: US 7-692909
• OSTI ID: 5467064
• Resource Relation: Patent File Date: 29 Apr 1991
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
03 NATURAL GAS
CEMENTS
CHEMICAL COMPOSITION
NATURAL GAS WELLS
CEMENTING
OIL WELLS
ACETAMIDE
ACETIC ACID
AMINES
ETHANOL
SUBTERRENE PENETRATORS
WATER
WELL DRILLING
ALCOHOLS
AMIDES
BUILDING MATERIALS
CARBOXYLIC ACIDS
DRILLING
DRILLING EQUIPMENT
DRILLS
EARTH PENETRATORS
EQUIPMENT
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MATERIALS
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PENETRATORS
WELLS
040300* - Oil Shales & Tar Sands- Drilling
Fracturing & Mining
030300 - Natural Gas- Drilling
Production
& Processing