Phase behavior and minimum miscibility pressure for nitrogen miscible displacement

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6263738

Chung, F T.H.; Llave, F M; Louvier, R W; Hudgins, D A

Nitrogen (N/sub 2/) has been successfully used as a displacing gas for light oil recovery. The information of the minimum miscibility pressure (MMP) and phase behavior for N/sub 2/ with light oils is important for the screening of this oil recovery method. Phase behavior studies were performed on N/sub 2/-hydrocarbon mixtures at high pressure (above 4,000 psia) to help interpret the results of the slim tube experiments. Synthetic oil systems of methane + n-butane (nC/sub 4/) + n-decane (nC/sub 10/) were studied to determine the approximate phase behavior of crude oil with nitrogen and to investigate the effect of the presence of methane (C/sub 1/) on phase behavior and the MMP of N/sub 2/. The resulting phase diagram shows that methane can lower the miscibility pressure of nitrogen.

• OSTI ID: 6263738
• Report Number(s): CONF-870323-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
023000 -- Petroleum-- Properties & Composition
ALKANES
API GRAVITY
BENCH-SCALE EXPERIMENTS
BUTANE
DECANE
DENSITY
DISPLACEMENT FLUIDS
DISSOLUTION
ELEMENTS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID FLOW
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROCARBONS
METHANE
MISCIBLE-PHASE DISPLACEMENT
NITROGEN
NONMETALS
OIL WELLS
ORGANIC COMPOUNDS
PETROLEUM
PHASE STUDIES
PHYSICAL PROPERTIES
RECOVERY
SOLUBILITY
STIMULATION
TWO-PHASE FLOW
WELL STIMULATION
WELLS