Patent ID: 11898094
Assignee: CHEVRON U.S.A. INC.
Field: Measurement (Instruments)
Classification: CPC C  E  G | IPC C  E  G

Claim 9:
10. A process comprising:
preparing a fluid mixture for an oil field operation or a pipeline operation, the fluid mixture comprising a concentration of a drag reducing agent determined based on a drag reduction parameter ΔB for the fluid mixture; and
using the fluid mixture in the oil field operation or the pipeline operation;, wherein the process further comprises:
measuring one or more fluid properties of the fluid mixture in a laboratory, a flow loop, a portable apparatus, or any combination thereof;
determining a small-scale drag reduction parameter ΔB for the fluid mixture based on the one or more fluid properties of the fluid mixture measured in the laboratory or the flow loop; and
upscaling the small-scale drag reduction parameter ΔB for use in the oil field operation or the pipeline operation;, wherein an analytical model is used for upscaling the small-scale drag reduction parameter ΔB for use in the oil field operation or the pipeline operation;, wherein the drag reduction parameter ΔB is defined by an equation:

ΔB=ΔBmaxBN 

wherein

BN=0 for Wi<1 and

BN=CDF for 0<BN<1, wherein ΔBmax is maximum drag reduction at Wi>>1, BN is normalized drag reduction as a function of shear, Wi={dot over (γ)}wλ is Weissenberg number, {dot over (γ)}w is the wall shear rate, λ is the longest relaxation time, and CDF is a cumulative distribution function.