Zaydullin R.,Stanford University |
Voskov D.V.,Stanford University |
James S.C.,Eponent Inc. |
Henley H.,University of Rhode Island |
Lucia A.,FlashPoint LLC
Computers and Chemical Engineering | Year: 2014
Fully compositional and thermal reservoir simulation capabilities are important in oil exploration and production. There are significant resources in existing wells and in heavy oil, oil sands, and deep-water reservoirs. This article has two main goals: (1) to clearly identify chemical engineering sub-problems within reservoir simulation that the PSE community can potentially make contributions to and (2) to describe a new computational framework for fully compositional and thermal reservoir simulation based on a combination of the Automatic Differentiation-General Purpose Research Simulator (AD-GPRS) and the multiphase equilibrium flash library (GFLASH). Numerical results for several chemical engineering sub-problems and reservoir simulations for two EOR applications are presented. Reservoir simulation results clearly show that the Solvent Thermal Resources Innovation Process (STRIP) outperforms conventional steam injection using two important metrics - sweep efficiency and oil recovery. © 2013 Elsevier Ltd.
Murphy M.M.,Eponent Inc. |
Spungen J.H.,Eponent Inc. |
Bi X.,Eponent Inc. |
Barraj L.M.,Eponent Inc.
Nutrition Research | Year: 2011
Many fresh pork products, in particular, fresh lean pork products, are nutrient-dense sources of protein and several other nutrients. The purpose of this study was to estimate nutritional contributions of fresh and fresh lean pork to adults' diets in the United States. Mean total nutrient intakes by fresh and fresh lean pork consumers on a day of recall were compared with intakes by nonconsumers to test the hypothesis that overall nutrient intakes by consumers were comparable with or better as compared with intakes by nonconsumers. Intakes were assessed using the National Health and Nutrition Examination Survey 2003 to 2006. Based on 1 day of dietary intake, 10% of adults consumed fresh pork, and 4% consumed fresh lean pork. Among consumers, fresh and fresh lean pork contributed 16% and 9%, respectively, of total fat and accounted for 23% to 31% of total protein, cholesterol, selenium, and thiamin intake. Fresh and fresh lean pork also accounted for 11% to 19% of total saturated fat, phosphorus, potassium, riboflavin, niacin, vitamin B 6, and vitamin B 12 in the diets of consumers and contributed 21% and 16%, respectively, of total zinc. Diets including fresh or fresh lean pork provided higher energy-adjusted amounts of protein, selenium, thiamin, and vitamin B 6 as compared with diets of adults not consuming fresh pork (P < .05) and provided comparable amounts of fat and saturated fat. Consumption of lean cuts of fresh pork is consistent with dietary guidance, and selection of fresh lean pork products by current nonconsumers could increase dietary variety without adversely affecting nutrient intake. © 2011 Elsevier Inc.