Scale-up of miscible flood processes
This report describes recent progress in a research effort to quantify the scaling of interactions of phase behavior of multicomponent mixtures with unstable flow in heterogeneous porous media. Results are presented in three areas: Phase behavior, fluid properties and characterization of crude oils; interactions of phase behavior and flow; viscous fingering and reservoir heterogeneity. In the first area, results of phase behavior experiments are reported for mixtures of CO{sub 2} with crude oil from the Means field. Detailed analyses of phase compositions are also reported for samples taken during the PVT experiments. Also reported are results of an investigation of crude oil compositions and phase compositions by gas chromatography combined with mass spectrometry. In the second area, the first detailed comparison is reported for displacements with and without volume change as components change phase. The solutions described were obtained by the method of characteristics. Also described is a transformation that allows radial flow solutions to be obtained from the linear solutions presented previously. Results of experiments and numerical computations that described the growth of viscous fingers are described in the third area. Results and simulations show clearly that even mild permeability heterogeneity can have a dramatic effect on the form and location of viscous fingers. They also show that the simulations reproduce with good accuracy the transition from flow dominated by viscous forces to flow dominated by the permeability distribution. The agreement between simulation and experiment is good enough that the particle-tracking simulation approach can be used with confidence to explore scaling questions. 54 refs., 126 figs., 23 tabs.
- Research Organization:
- Stanford Univ., CA (USA). Dept. of Petroleum Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- FG21-89MC26253
- OSTI ID:
- 5788092
- Report Number(s):
- DOE/MC/26253-5; ON: DE91002244
- Country of Publication:
- United States
- Language:
- English
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PETROLEUM
MISCIBLE-PHASE DISPLACEMENT
RESERVOIR ROCK
HETEROGENEOUS EFFECTS
CARBON DIOXIDE INJECTION
DISPLACEMENT FLUIDS
FLUID FLOW
MATHEMATICAL MODELS
PHASE STUDIES
PROGRESS REPORT
DOCUMENT TYPES
ENERGY SOURCES
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
020300* - Petroleum- Drilling & Production