The PVT Properties of the Ecuadorian Crude Oils

Izurieta, Alvaro; Iza, A..

doi:10.2118/185483-ms

Cited by 7 publications

(5 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Other PVT simulators, such as PVT SIM [21], have a commercial interface, IntelliPVT simulator with a basic graphical interface [25], different from the open and accessible interface of PVTTESTSYSTEM, different from the office interface of macros made in Excel [7,59]. Some tools do not have input and storage of information related to the reservoir's history [37,62], unlike PVTTESTSYSTEM, which records customised characteristics for any given reservoir.…”

Section: Discussionmentioning

confidence: 99%

Computer Application to Estimate PVT Conditions in Oil Wells in the Ecuadorian Amazon

Escandón-Panchana¹,

Morante-Carballo²,

Herrera-Franco³

et al. 2021

MMEP

View full text Add to dashboard Cite

A reservoir behaviour's characterisation is determined by analysing the fluids' physical properties, reported in Pressure, Volume and Temperature (PVT) tests. These tests are performed in the laboratory or are estimated by mathematical correlations with the well's basic properties. The eastern basin of Ecuador is considered a hydrocarbon zone, and the analysis of the physical properties of the fluid from oil wells is essential. The aim is to develop the PVTTESTSYSTEM software to estimate PVT conditions when there are no laboratory tests. The study methodology is based on (i) Compilation of 10 PVT laboratory tests of oil wells in the eastern basin of Ecuador; (ii) Analysis of mathematical correlations; (iii) Development of the PVTTESTSYSTEM software, with the wells' initial conditions' input, selecting the mathematical correlation and estimation of results, based on the relationship of the properties of oil and gas; iv) Comparison of data obtained by laboratory tests and PVTTESTSYSTEM software reports. The software used with a graphical interface presents a registration and login platform and five modules that allow: inserting company and field data, initial oil well data, selecting correlations, calculating PVT properties and generating a graphic report. The results show that the mathematical correlations that estimate PVT properties were systematised, which approximate the laboratory tests' real results. The approximation of the calculated results with the actual results establishes a high confidence level for the PVTTESTSYSTEM software.

show abstract

Section: Discussionmentioning

confidence: 99%

Computer Application to Estimate PVT Conditions in Oil Wells in the Ecuadorian Amazon

Escandón-Panchana¹,

Morante-Carballo²,

Herrera-Franco³

et al. 2021

MMEP

View full text Add to dashboard Cite

show abstract

“…Este apartado hace referencia al procesamiento y ajuste de la información, la cual consta de lo siguiente (Izurieta & Iza, 2017):…”

Section: Validación De Informaciónunclassified

Desarrollo de una Herramienta Informática para la Simulación de Reportes PVT en los Pozos del Oriente Ecuatoriano de la Arena U Inferior

Arteaga

Gómez

Iza

et al. 2020

View full text Add to dashboard Cite

En el presente artículo se describe el desarrollo de un programa que permita la estimación de propiedades de Presión, Volumen y Temperatura (PVT) en los pozos del Oriente Ecuatoriano. El prototipo cuenta con la recopilación de correlaciones más adecuadas para crudo Ecuatoriano, visualización y generación de reportes de los pozos que se encuentren perforados sujeta a información geográfica. Como primer punto, es necesario contar con expresiones matemáticas PVT calibradas a datos de laboratorio correspondientes a la arena U inferior del crudo de la región. Para esta parte, la metodología desarrollada constituye la adquisición, procesamiento y ajuste de datos de información de laboratorio, con el fin de obtener un manejo adecuado de los mismos. La aplicación desarrollada proporcionará la estimación de las propiedades PVT del petróleo más acordes a la Cuenca Oriente. En tal virtud, los resultados experimentales podrán ser utilizados en los diferentes cálculos requeridos para la producción de hidrocarburos de la industria local y para la academia permitirá ampliar las fronteras de estudio.

show abstract

“…Compared with the wellbore flow of conventional oil wells, in the late production period of CO 2 flooding reservoirs, the associated gas produced from production wells has a high CO 2 content [17], resulting in changes in the volume factor, viscosity, density, and gas solubility of the three oil-gas-water phases; this further affects the calculation of wellbore pressure, temperature distribution, and gas-lift design [18,19]. Therefore, it is of great importance to study the fluid physical parameters of watered oil under different temperatures, pressures, and CO 2 content through laboratory experiments.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Test of Fluid Physical Property Parameters of Well Fluid Containing CO2

Zou¹,

Yu²,

Chen³

et al. 2023

Processes

View full text Add to dashboard Cite

Change regulation of the physical properties of fluid is key to accurately predicting multiphase fluid flow in the production wellbore of CO2 flooding reservoirs. Given the characteristics of significant changes in pressure, temperature, and CO2 content in the whole wellbore of production wells in CO2 flooding reservoirs, this paper systematically studied the change rules of volume factor, viscosity, density, and solubility of well fluid for pressure 5~30 MPa, temperature 20~120 °C, and CO2 content 10~90% through single degassing PVT experiments. According to the experimental results, the volume factor of crude oil increases first and then decreases with the pressure increase. At the bubble point pressure (20 MPa), the volume factor of crude oil can reach 1.89 at high temperatures. The volume factor can be increased from 1.28 to 1.44 at 8 MPa when the temperature increases from 20 °C to 120 °C. Under the bubble point pressure, the increase in pressure increases the solubility of CO2, and the viscosity of crude oil decreases rapidly. In contrast, above the saturation pressure, the increase in pressure increases the viscosity of crude oil. Under the freezing point temperature (24 °C), the viscosity of crude oil decreases sharply with increase in temperature. In contrast, above the freezing point temperature, the viscosity change of crude oil is not sensitive to temperature. The wellbore temperature has a significant impact on the density of the well fluid. At 5 MPa, the temperature increases from 20 °C to 120 °C, which can reduce the density of high CO2 crude oil from 0.93 g/cm3 to 0.86 g/cm3. The solubility of CO2 in crude oil is sensitive to pressure. When the pressure increases from 5 MPa to 15 MPa at 20 °C, the solubility increases by 36.56 cm3/cm3. The results of this paper support the multiphase fluid flow law prediction of CO2 flooding production wells with a high gas–liquid ratio.

show abstract

The PVT Properties of the Ecuadorian Crude Oils

Cited by 7 publications

References 28 publications

Computer Application to Estimate PVT Conditions in Oil Wells in the Ecuadorian Amazon

Computer Application to Estimate PVT Conditions in Oil Wells in the Ecuadorian Amazon

Desarrollo de una Herramienta Informática para la Simulación de Reportes PVT en los Pozos del Oriente Ecuatoriano de la Arena U Inferior

Laboratory Test of Fluid Physical Property Parameters of Well Fluid Containing CO2

Contact Info

Product

Resources

About