Petroleum Engineering Project Topics

Prediction of the Dew-point Pressure of a Gas Condensate Reservoir

Prediction of the Dew-point Pressure of a Gas Condensate Reservoir

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Prediction of the Dew-point Pressure of a Gas Condensate Reservoir

 

Content Structure of Prediction of the Dew-point Pressure of a Gas Condensate Reservoir

  • The abstract contains the research problem, the objectives, methodology, results, and recommendations
  • Chapter one of this thesis or project materials contains the background to the study, the research problem, the research questions, research objectives, research hypotheses, significance of the study, the scope of the study, organization of the study, and the operational definition of terms.
  • Chapter two contains relevant literature on the issue under investigation. The chapter is divided into five parts which are the conceptual review, theoretical review, empirical review, conceptual framework, and gaps in research
  • Chapter three contains the research design, study area, population, sample size and sampling technique, validity, reliability, source of data, operationalization of variables, research models, and data analysis method
  • Chapter four contains the data analysis and the discussion of the findings
  • Chapter five contains the summary of findings, conclusions, recommendations, contributions to knowledge, and recommendations for further studies.
  • References: The references are in APA
  • Questionnaire

 

Chapter One of Prediction of the Dew-point Pressure of a Gas Condensate Reservoir

INTRODUCTION

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Background of study

Gas Condensate Reservoiris a reservoir having low-density mixture of liquid hydrocarbons that are present as gaseous components in the subsurface (in the reservoir). It is important to recognize that some gas condensate reservoirs show condensate dropping out within reservoirs, as well as condensate production at the surface due to pressure falling below the dew-point during production. This condensate accumulation in the reservoir initially remains immobile due to interfacial forces between it and connate water within the pores of the formation until its saturation level reaches a threshold value and becomes mobile.

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Initially, the gas-condensate is totally gas in the reservoir. As reservoir pressure decreases, the gas condensate exhibits a dew-point. The dew-point of a gas condensate fluid occurs when a gas mixture containing heavy hydrocarbon is depressurized until liquid is formed, that is, a substantial amount of gas phase exists in equilibrium with an infinitesimal amount of liquid phase. A pressure is reduced; liquid condenses from the gas to form free liquid in the reservoir. Normally, there is no effective permeability to this liquid phase and it is not produced. If the pressure continues to decrease, a second dew-point will be reached and the liquid can be re-vaporized. This lower dew-point pressure is usually well below the reservoir abandonment pressure; thus it would be of no interest in reservoir performance.

By definition, dew-point pressure is simplythe pressure at which an infinitesimal amount of liquid is in equilibrium with a large quantity of gas. the pressure below which liquid condense out of the gaseous phase.

A phase behaviour can be defined as the characteristics (changes in phase) exhibited by the gas when subjected to different temperature-pressure conditions.

During production, the hydrocarbon molecules undergo various phase and some property change, altering intermediate stages which are crucial in designing and operating the processes efficiently and optimally.

Download Chapters 1 to 5 PDF         

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