Generalized drag coefficient applicable for all flow regimes
A generalized drag coefficient correlation for particulate settling in power-law-type fluids is applicable for all flow regimes from Stokes' (laminar) to Newton's flow (turbulence). The major advantage of this correlation for hydrocarbon reservoirs is that it correctly asymptotes to a modified Stokes' law (viscous effects) at low Reynolds value (Re) numbers and to the turbulent drag coefficient C/sub D/ approx. = 0.44 at large values of Re (inertia dominance). The use of Stokes' law can greatly underestimate the drag coefficient and grossly overestimate the terminal settling velocity at large Re. In many respects, this article is a review and extension of drag coefficient correlations used in hydraulic fracturing on particulate settling in Newtonian and non-Newtonian fluids. Since most non-Newtonian correlations are for creeping flow (Re' < 0.1), the major emphasis will be to extend these correlations to Newton's flow. A comparison with experimental data and empirical correlations of other investigators is included to verify the validity and applicability of the extended correlation.
- Research Organization:
- Meyer and Associates Inc., Natrona Heights, PA
- OSTI ID:
- 5516971
- Journal Information:
- Oil Gas J.; (United States), Vol. 84:21
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
DRAG
CORRELATIONS
NATURAL GAS WELLS
HYDRAULIC FRACTURING
OIL WELLS
PARTICULATES
SEDIMENTATION
DATA ANALYSIS
ENHANCED RECOVERY
FLOW MODELS
LAMINAR FLOW
NATURAL GAS
PETROLEUM
REYNOLDS NUMBER
STOKES LAW
TURBULENT FLOW
VELOCITY
VISCOUS FLOW
WELL STIMULATION
COMMINUTION
ENERGY SOURCES
FLUID FLOW
FLUIDS
FOSSIL FUELS
FRACTURING
FUEL GAS
FUELS
GAS FUELS
GASES
MATHEMATICAL MODELS
PARTICLES
RECOVERY
STIMULATION
WELLS
020300* - Petroleum- Drilling & Production
030900 - Natural Gas- Artificial Stimulation
Plowshare- (-1989)