Matrix control cementing slurry
Patent
·
OSTI ID:5865968
This patent describes a method of cementing a well bore. The method consists of 1.) mixing together at ambient temperatures at the well surface a hydraulic cement, water, in an effective amount to produce a pumpable slurry, and a polyvinyl acetate-polyvinyl alcohol polymer, which is insoluble in the slurry at ambient temperatures. The polymer has a greater than about 95 percent acetate groups converted to hydroxyl groups. The polymer is heated to actuable solubilization in the cement slurry at temperatures above about 120/sup 0/F. The solubilizing of the polyvinyl acetate-polyvinyl alcohol polymer in the slurry prior to the setting of the slurry by pumping the cement slurry to a desired location in the well bore. This action increases the temperature of the slurry; and 2.) allows the cement slurry to harden to a solid mass.
- Assignee:
- Hughes Tool Co., Houston, TX
- Patent Number(s):
- US 4569395
- OSTI ID:
- 5865968
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACETIC ACID ESTERS
ALCOHOLS
AMBIENT TEMPERATURE
BUILDING MATERIALS
CARBOXYLIC ACID ESTERS
CEMENTING
CEMENTS
CHEMICAL PREPARATION
DISPERSIONS
ESTERS
HARDENING
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MATERIALS
MEDIUM TEMPERATURE
MIXING
MIXTURES
MONOMERS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
POLYVINYLS
PVA
QUANTITY RATIO
SLURRIES
SUSPENSIONS
SYNTHESIS
VINYL MONOMERS
WATER
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACETIC ACID ESTERS
ALCOHOLS
AMBIENT TEMPERATURE
BUILDING MATERIALS
CARBOXYLIC ACID ESTERS
CEMENTING
CEMENTS
CHEMICAL PREPARATION
DISPERSIONS
ESTERS
HARDENING
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MATERIALS
MEDIUM TEMPERATURE
MIXING
MIXTURES
MONOMERS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
POLYVINYLS
PVA
QUANTITY RATIO
SLURRIES
SUSPENSIONS
SYNTHESIS
VINYL MONOMERS
WATER
WELLS