Effect of excessive retardation on the physical properties of cement slurries

Journal Article · Wed Aug 01 04:00:00 EDT 1984 · J. Pet. Technol.; (United States)

DOI:https://doi.org/10.2118/10221-PA· OSTI ID:6372242

Sabins, F L; Cook, C; Sutton, D L

As well depths become greater over-retardation becomes more and more commonplace. Precise retarder response is difficult to attain at high temperatures and many cementing slurries end up with thickening times far in excess of what is considered good practice. To avoid sensitive retarder concentration, field blends often show thickening times of more than 6 hours for jobs where 3 to 4 hours is sufficient. Excessive thickening time has been commonly considered detrimental to good cement jobs, but the effect of over-retardation on cement properties was mostly derived from theoretical speculation. Through an extensive laboratory study, thickening time retardation is correlated to static gel strength development, initial set, and early compressive strength. The results indicate that moderate retardation has minimal effect on static cement properties. For deep wells, thickening times up to 10 hours do not appear to be detrimental to early compressive strength at bottomhole static temperature (BHST).

• Research Organization: Sabins, Halliburton Services
• OSTI ID: 6372242
• Journal Information: J. Pet. Technol.; (United States), Journal Name: J. Pet. Technol.; (United States) Vol. 36:9; ISSN JPTJA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
BUILDING MATERIALS
CEMENTING
CEMENTS
COLLOIDS
DEPTH
DIMENSIONS
DISPERSIONS
GELS
HARDENING
MATERIALS
MIXTURES
OIL WELLS
PHYSICAL PROPERTIES
RESERVOIR TEMPERATURE
SLURRIES
SUSPENSIONS
TEMPERATURE EFFECTS
TIME DEPENDENCE
WELL COMPLETION
WELL TEMPERATURE
WELLS