this study aimed to construct the hydrate three-phase equilibrium curves for two typical iranian gas reservoir samples using a high-pressure visual cell. to do so, complete analysis of the reservoir fluids was obtained by different techniques of composition analysis i.e. gas chromatography (gc) and detailed hydrocarbon analysis (dha). using high-pressure visual cell the hydrate phase equilibriu...

The Fushime field is characterized by a high temperature reservoir ( e x d n g 350 "C ) and high salinity. The some fluids collected from eleven prochction wells also show acidic pH (lower than pH4.5). The chloride concentration rdcu la ted by using a Na-K-Ca geothermometer ranges from 1 1600 to 22000 mg/kg in the reservoir. Furthermore, K, Ca and SiO, concentrations were higher and Mg, SO, con...

finding a representative fluid in a hydrocarbon reservoir is crucial for integrated reservoir management. in this study, a systematic approach for screening and selecting consistent fluid samples in a reservoir was developed. the model integrated quality control (qc) of well conditioning before sampling, qc of pvt data, thermodynamic modeling and compositional gradient within a reservoir. well ...

A new fracture-injection/falloff type-curve analysis method is presented for reservoirs containing slightly compressible and compressible fluids. Type-curve analysis augments conventional beforeand after-closure methods, which are also reformulated in terms of adjusted pseudopressure and adjusted pseudotime to account for compressible reservoir fluids. Unlike beforeand after-closure methods whi...

Figure 1. Model of P-wave velocity (above) and density (below) verses gas saturation for a sandstone reservoir with a porosity of 25%. The velocity was modelled using Gassmann’s equation (1951) with the Reuss average moduli of the fluids. For a gas saturated reservoir, a decrease in gas saturation causes a negligible change in the P-wave velocity for saturations above 20% and more significant c...

Background The goal of this work was to investigate the potential for subsurface migration of fluids from the stimulated oil and gas reservoir to an overlying drinking water aquifer. Researchers conducted two types of numerical simulation experiments: (1) exploration of hypothetical scenarios that could result in emergence of fluid pathways; and (2) evaluation of the range of conditions that ma...