TY - JOUR

T1 - Effect of temperature on the rate of methane hydrate nucleation in water-in-crude oil emulsion

AU - Sagidullin, A. K.

AU - Stoporev, A. S.

AU - Manakov, A. Yu

PY - 2019/4/18

Y1 - 2019/4/18

N2 - Isothermal nucleation of methane hydrate in the emulsions of water in oil has been studied experimentally at a pressure of 12.5 MPa within the temperature range of-3.0 to-4.9 °C (supercooling 17.8-19.7 °C). It was demonstrated that the experimental survival curves are composed of two regions with different slopes to the time axis. Nucleation rates calculated for initial and final (in parentheses) regions of survival curves turned out to be equal to 0.00065 (0.00055), 0.00036 (0.00017), and 0.00018 (0.00010) s -1 m -2 for temperatures-4.9,-4.0, and-3.0 °C, respectively. The experimental data were extrapolated to the regions of higher and lower supercooling values using a known expression describing the dependence of the nucleation rate on temperature. It may be expected that the information concerning the temperature dependence of hydrate nucleation rates in water-oil systems will be useful to optimize the consumption of kinetic hydrate inhibitors during the development of oil and gas deposits.

AB - Isothermal nucleation of methane hydrate in the emulsions of water in oil has been studied experimentally at a pressure of 12.5 MPa within the temperature range of-3.0 to-4.9 °C (supercooling 17.8-19.7 °C). It was demonstrated that the experimental survival curves are composed of two regions with different slopes to the time axis. Nucleation rates calculated for initial and final (in parentheses) regions of survival curves turned out to be equal to 0.00065 (0.00055), 0.00036 (0.00017), and 0.00018 (0.00010) s -1 m -2 for temperatures-4.9,-4.0, and-3.0 °C, respectively. The experimental data were extrapolated to the regions of higher and lower supercooling values using a known expression describing the dependence of the nucleation rate on temperature. It may be expected that the information concerning the temperature dependence of hydrate nucleation rates in water-oil systems will be useful to optimize the consumption of kinetic hydrate inhibitors during the development of oil and gas deposits.

KW - GAS HYDRATE

KW - HETEROGENEOUS NUCLEATION

KW - INDUCTION TIME

KW - CRYSTAL-GROWTH

KW - LIQUID WATER

KW - KINETICS

KW - CURVES

KW - MODEL

KW - DSC

KW - INSIGHTS

UR - http://www.scopus.com/inward/record.url?scp=85064335613&partnerID=8YFLogxK

U2 - 10.1021/acs.energyfuels.9b00379

DO - 10.1021/acs.energyfuels.9b00379

M3 - Article

AN - SCOPUS:85064335613

VL - 33

SP - 3155

EP - 3161

JO - Energy & Fuels

JF - Energy & Fuels

SN - 0887-0624

IS - 4

ER -