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Phase Behavior of H2O Hydrocarbon Systems

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Journal Articles
SPE Res Eng 2 (04): 687–694.
Paper Number: SPE-14148-PA
Published: 01 November 1987
... or because it is injected for mobility control, and its presence should also be considered in phase-behavior studies. Because of the relatively low miscibility phase-behavior studies. Because of the relatively low miscibility of H2O with both CO2 and hydrocarbons at reservoir conditions, an aqueous phase...
Journal Articles
SPE Res Eng 12 (02): 131–137.
Paper Number: SPE-27872-PA
Published: 01 May 1997
...A.A. Shinta; Abbas Firoozabadi Summary An association model has been incorporated in the Peng-Robinson equation of state (PREOS) to use the combined model for water/reservoir crudes phase-behavior calculations. The interaction coefficients between H2O and hydrocarbons follow a simple relationship...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 9–12, 2020
Paper Number: SPE-203196-MS
... if the hydrocarbons are in single phase. The EOS modelling software exported the compositions variation with depth and used as input in the simulator to capture the physical fluid behavior in the reservoir. The rock properties were reverted to the values from lab measured SCAL data – Swcr was reverted to 30...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18860-MS
... will react with water to form hydrates according to G + NH H2O = G+NH H2O, where NH is the hydration number. Of particular interest are hydrates formed by hydrocarbon gases when G is an alkane. Natural hydrates in geological systems also include CO2, H2S and N2 as guests. Vast amounts of hydrocarbons...
Proceedings Papers

Paper presented at the SPE/DOE Symposium on Improved Oil Recovery, April 17–21, 2004
Paper Number: SPE-89419-MS
..., we employed a quaternary liquid system composing of hexadecane (C16), n-butanol (NBA), water (H2O), and isopropanol (IPA). Measured equilibrium phase compositions and IFTs are reported. The reported phase behavior of the quaternary system shows that the H2O-rich phase should represent the gas phase...
Proceedings Papers

Paper presented at the CORROSION 2010, March 14–18, 2010
Paper Number: NACE-10359
... pressures of ammonia and hydrogen chloride vapor. The effects of these parameters are not independent and require complex models to properly characterize the system. For simple overhead systems, where hydrocarbon contribution is not significant, NH3-HCl- H2O phase diagram can be used to predict the salt...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 2–4, 2009
Paper Number: SPE-119060-MS
... Abstract Reservoir recovery processes involve complex mass and heat transfer between the injected fluid and the resident rock-fluid system. Thermal-compositional reservoir simulators can be used to plan such displacement processes, in which the phase behavior is computed with an Equation...
Proceedings Papers

Paper presented at the Offshore Mediterranean Conference and Exhibition, March 25–27, 2015
Paper Number: OMC-2015-331
...-water non-hydrocarbon binaries. The Predictive-Soave-Redlich-Kwong (PSRK) Equation of State as implemented in Aspen Plus® and AQUAlibrium have been used to describe the complex phase behavior of these systems. Results have been compared with vapor-liquid equilibrium experimental data to evaluate...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13428
... the general local condensation behavior at Sec II, III and IV. However, as more thermodynamic data of ternary HF- H2O-HC is available, the effect of the hydrocarbon on the condensation of HF acid can be further studied. In Sec I, because of the relatively high HF content in the vapor phase, the presence...
Proceedings Papers

Paper presented at the SPE Oilfield and Geothermal Chemistry Symposium, January 22–24, 1979
Paper Number: SPE-7879-MS
... follows, proceeds sequentially from a very simple model to one that gets progressively more complex as the various pertinent factors are introduced. SIMPLE MODEL FOR FLASH IN AN H2o - C02 SYSTEM The basic model describing the phase behavior of co2 and water in a power plant utilizing a flash cycle may...
Proceedings Papers

Paper presented at the SPE Enhanced Oil Recovery Symposium, April 20–23, 1986
Paper Number: SPE-14924-MS
... behavior of crude oils and gases. The predictions worsen as the liquid phase becomes more nonideal, as in the calculations of aqueous-phase behavior, and modifications to the original cubic equation of state are required to produce acceptable results. Many systems of interest to the petroleum industry...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7886
... capacity), added costs, and thermal cycling of the system which imparts additional wear on the reactor. The formation of carbon deposits (coking) has been described in the literature 3,4,5 and is a function of several factors including the balance of hydrocarbon to steam, incorporation of process gas...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25295-MS
... exceed 250°C and 1500 atm. In order to understand material environment interactions, it is prerequisite to be able to predict the phase behavior and speciation in H2S CO2 H2O salt systems. In particular, it is of interest to predict the activities of corrosive species, which determine...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–29, 2004
Paper Number: SPE-90572-MS
..., which form three liquid phases in equilib- rium at ambient conditions. The C16/NBA/H2O system gives appropriate phase behavior when isopropanol (IPA) or sodium chloride (NaCl) is added to the mixtures. Adding IPA or NaCl changes the compositions of the three equilibrium phases that form in a way...
Proceedings Papers

Paper presented at the Offshore Technology Conference-Asia, March 25–28, 2014
Paper Number: OTC-24930-MS
... content in hydrate phase, and at the same time reducing hydrocarbon loss in the CO2 stream. In this study, the CO2 separation efficiency was assessed in order to evaluate the feasibility of separating CO2 from natural gas with minimum hydrocarbon loss. The focus lies in increasing CO2 selectivity...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201341-MS
... strategies is the localized pH of the aqueous phase, which depends on its local composition. Therefore, development of an accurate phase behavior model for fluid systems containing acid gases, water along with the hydrocarbons of interest is needed, so that the composition of aqueous phase can be estimated...
Proceedings Papers

Paper presented at the SPE Symposium on Improved Oil Recovery, April 20–23, 2008
Paper Number: SPE-113947-MS
..., not the phase behavior. For example, a pseudo-component may be used to model kinetically similar hydrocarbons with widely varying boiling points. Reliable phase behavior models are therefore difficult to develop, and it is natural to expect sensitivities to the chosen formulation. We again use the VKC to study...
Proceedings Papers

Paper presented at the CORROSION 2010, March 14–18, 2010
Paper Number: NACE-10129
... a detailed treatment of the solution chemistry and phase behavior of Na K Mg Ca Ba Fe Cl SO4 CO3 S H2O methanol glycol systems. Further, we verify the performance of the model in the light of experimental data for the precipitation of selected sulfate, carbonate, and chloride phases...
Proceedings Papers

Paper presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition, October 22–24, 2013
Paper Number: SPE-165902-MS
... studies that examine the CO 2 /water 1 /oil system (Hosseini and Nicot, 2012). The CO 2 /H2O system has already been extensively investigated by many authors. There is a wide range of data available from experiments and correlations regarding CO 2 solubility in water and phase behavior of CO 2 /H2O...
Journal Articles
SPE Res Eng 7 (02): 253–258.
Paper Number: SPE-20278-PA
Published: 01 May 1992
... conducted to determine the effectsof brine on the performance of CO2 EOR processes. Introduction The presence of an aqueous phase will influence the phase behavior of CO2/hydrocarbon systems. The goal of this study was to correlate these effectsaccurately and simply, to incorporate them into a reservoir...

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