Class G cement in Brazil - A statistical approach

Journal Article · Wed Sep 01 00:00:00 EDT 1993 · SPE Drilling Engineering (Society of Petroleum Engineers); (United States)

DOI:https://doi.org/10.2118/21155-PA· OSTI ID:5912504

Rosa, F C; Coelho, O Jr; Parente, F J ^[1]

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1. Petrobras S.A., Rio de Janeiro (Brazil)

Since 1975, Petrobras has worked with Brazilian Portland cement manufacturers to develop high-quality Class G cements. The Petrobras R and D Center has analyzed each batch of Class G cement manufactured by prequalified producers to API Spec. 10 standards and to Brazilian Assoc. of Technical Standards (ABNT) NBR 9831 standards. As a consequence, the Drilling Dept. at Petrobras now is supplied by three approved Class G cement factories strategically located in Brazil. This paper statistically analyzes test results on the basis of physical parameters of these Class G cements over 3 years. Statistical indices are reported to evaluate dispersion of the physical properties to obtain a reliability index for each Class G cement.

• OSTI ID: 5912504
• Journal Information: SPE Drilling Engineering (Society of Petroleum Engineers); (United States), Vol. 8:3; ISSN 0885-9744
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
42 ENGINEERING
CEMENTS
PERFORMANCE TESTING
PHYSICAL PROPERTIES
NATURAL GAS WELLS
CEMENTING
WELL COMPLETION
OIL WELLS
BRAZIL
STANDARDIZATION
STATISTICAL DATA
BUILDING MATERIALS
DATA
DEVELOPING COUNTRIES
INFORMATION
LATIN AMERICA
MATERIALS
NUMERICAL DATA
SOUTH AMERICA
TESTING
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing
420500 - Engineering- Materials Testing