Applications of foam cement

Conference · Wed Sep 01 04:00:00 EDT 1982 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5396322

McElfresh, P M; Bocan, V C.G.

Foam cement offers a versatile and economical means of cementing wells with low density, high strength material. Several common applications of foam cement are available, and these include placing strong cement across weak or highly fractured zones without losing circulation; filling vugs or porous thief zones; or simply as an inexpensive light-weight filler slurry. The various aspects of slurry design, including their methods of determination, are discussed. It was found that thickening times could be determined directly on the foam cement in existing equipment with only minor modifications; the fluid loss and the rheology could be measured directly with no modifications; and the compressive strengths were determined in a special cell to prevent water invasion from the curing chamber. Since these parameters are determined by the nitrogen content, their relationships to density are also discussed. Job procedures for pumping foam cement are discussed in two methods, i.e., constant nitrogen rate (variable foam density) and constant density (variable nitrogen rate). Included in this discussion is the description of an improved atomizer for generating foam cement. From yard tests utilizing field equipment, it was found that this device improved the foam stability by means of better disbursement of the nitrogen in the cement slurry. The computer program which calculates the surface gas injection rates to achieve the desired density at specified depths is discussed and evaluated.

• Research Organization: BJ-Hughes Services
• OSTI ID: 5396322
• Report Number(s): CONF-820927-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE11203
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
36 MATERIALS SCIENCE
360600 -- Other Materials
ATOMIZATION
BUILDING MATERIALS
CEMENTING
CEMENTS
COLLOIDS
COMPRESSION STRENGTH
COMPUTER CALCULATIONS
CURING
DENSITY
DISPERSIONS
ELEMENTS
FIELD TESTS
FILLERS
FOAMS
FRACTURED RESERVOIRS
MATERIALS
MECHANICAL PROPERTIES
MIXTURES
NATURAL GAS WELLS
NITROGEN
NONMETALS
OIL WELLS
PARAMETRIC ANALYSIS
PHYSICAL PROPERTIES
PUMPING
REPAIR
RHEOLOGY
SLURRIES
SUSPENSIONS
TEST FACILITIES
TESTING
WELL CASINGS
WELL SERVICING
WELLS