2023 AIChE Annual Meeting
(252b) Measurement of Calcite Solubility at Temperatures to 573K and Pressures to 68 Mpa
Authors
Gamwo, I. - Presenter, U.S. DOE-NETL
Baled, H. O., University of Pittsburgh
Fazio, J., NETL, Department of Energy
Burgess, W. A., National Energy Technology Laboratory
Calcite precipitation during oil production can pose a serious hindrance to the oil flow. Yet, calcite solubility experimental data needed for the prediction of calcite precipitation in ultradeep offshore reservoirs are not available in the open literature at temperatures above 523K.
The National Energy Technology Laboratory (NETL) recently designed, built, and commissioned a new high-temperature, high-pressure solubility apparatus rated to 600K and 68 MPa. The new apparatus was tested for its reliability by measuring calcite solubility at conditions available in the literature. The apparatus was then used to extend the literature calcite solubility data to high temperatures up to 573 K and pressures to 68 MPa in a high-salinity brine containing NaCl and Na2SO4. Such data are needed to experimentally validate thermodynamic models being developed to predict and inhibit the formation of calcite during oil production.
The National Energy Technology Laboratory (NETL) recently designed, built, and commissioned a new high-temperature, high-pressure solubility apparatus rated to 600K and 68 MPa. The new apparatus was tested for its reliability by measuring calcite solubility at conditions available in the literature. The apparatus was then used to extend the literature calcite solubility data to high temperatures up to 573 K and pressures to 68 MPa in a high-salinity brine containing NaCl and Na2SO4. Such data are needed to experimentally validate thermodynamic models being developed to predict and inhibit the formation of calcite during oil production.