Petroleum Reservoirs and Oil Production Mechanisms

2021 ◽  
pp. 1-21
Author(s):  
Bhargav Baruah ◽  
Puja Kalita ◽  
Lalit Pandey ◽  
Pankaj Tiwari
Keyword(s):  
Petroleum Reservoirs ◽  
Oil Production ◽  
Production Mechanisms

DEVELOPMENT AND FIELD EVALUATION OF A NEW MICROBIAL EOR CONCEPT

1991 ◽  
Vol 31 (1) ◽  
pp. 386 ◽  
Author(s):  
Alan J. Sheehy
Keyword(s):  
Oil Recovery ◽  
Extreme Environments ◽  
Petroleum Reservoirs ◽  
Oil Production ◽  
Field Evaluation ◽  
Growth Potential ◽  
Experimental Systems ◽  
Environmental Extremes ◽  
Oil Water ◽  
Over 40 Years

For over 40 years it has been speculated that bacteria can facilitate, increase or extend oil production from petroleum reservoirs. This speculation was supported in the laboratory by dramatic increases in oil recovered from experimental systems and in the field by anecdotal accounts of improvements in oil production. Most of these studies were poorly conceived and inadequately controlled. This drew industry criticism and created an environment where proposals to implement microbiologically enhanced oil recovery (microbial EOR) were summarily dismissed. The program implemented for the Alton Field, Surat Basin, was designed to overcome industry scepticism and document unambiguously in the field the effectiveness of a new microbial EOR strategy called Biological Stimulation of Oil production (BOS). An approximate 40 per cent increase in oil production has been sustained, compared to control operations on the same well, for eighteen months.The thrust to introduce pilot and field programs of BOS is compelling. BOS shares the advantages common to all biotechnologies in exploiting the extraordinary growth potential of microorganisms, providing flexibility through the extreme diversity of microbial metabolites and using cheap feedstocks. The BOS process generates ultramicrocells from those bacteria present naturally in the reservoir to be treated. This promotes injectivity, dispersion and persistence of the BOS system in the extreme environments which characterise petroleum reservoirs. The nutrients injected with the ultramicrocells result in metabolites forming within the bacterial cell surface. These metabolites cause re-profiling of the formation through the generation of emulsions and the development of concentrated surfactants at the oil-water interface.Ecological strategies designed to negate previously documented problems in the application of microbial EOR have been shown to be effective in laboratory experiments and field applications. Overcoming environmental extremes and developing persistence of beneficial organisms have been given special attention.

How to Improve our Understanding of Gas and Oil Production Mechanisms in Liquid-rich Shale

2014 ◽  
Author(s):  
Masoud Alfi ◽  
Bicheng Yan ◽  
Yang Cao ◽  
Cheng An ◽  
Yuhe Wang ◽  
...  
Keyword(s):  
Oil Production ◽  
Production Mechanisms

Hierarchical Economic Optimization of Oil Production from Petroleum Reservoirs

2009 ◽  
Vol 42 (11) ◽  
pp. 738-743 ◽  
Author(s):  
Gijs M. van Essen ◽  
Paul M.J. Van den Hof ◽  
Jan Dirk Jansen
Keyword(s):  
Petroleum Reservoirs ◽  
Oil Production ◽  
Economic Optimization

scholarly journals Water Injection for Oil Recovery in Mishrif Formation for Amarah Oil Field

2020 ◽  
Vol 21 (1) ◽  
pp. 39-44
Author(s):  
Ayat Ahmed Jassim ◽  
Abdul Aali Al-dabaj ◽  
Aqeel S. AL-Adili
Keyword(s):  
Oil Recovery ◽  
Water Injection ◽  
Petroleum Reservoirs ◽  
Oil Production ◽  
Oil Field ◽  
Reservoir Pressure ◽  
Vertical Wells ◽  
First Case ◽  
New Ideas

The water injection of the most important technologies to increase oil production from petroleum reservoirs. In this research, we developed a model for oil tank using the software RUBIS for reservoir simulation. This model was used to make comparison in the production of oil and the reservoir pressure for two case studies where the water was not injected in the first case study but adding new vertical wells while, later, it was injected in the second case study. It represents the results of this work that if the water is not injected, the reservoir model that has been upgraded can produce only 2.9% of the original oil in the tank. This case study also represents a drop in reservoir pressure, which was not enough to support oil production. Thus, the implementation of water injection in the second case study of the average reservoir pressure may support, which led to an increase in oil production by up to 5.5% of the original oil in the tank. so that, the use of water injection is a useful way to increase oil production. Therefore, many of the issues related to this subject valuable of study where the development of new ideas and techniques.

Calculation of Transient Oil Production in a Radial Composite Reservoir

1967 ◽  
Vol 7 (04) ◽  
pp. 355-358 ◽  
Author(s):  
P.J. Closmann ◽  
N.W. Ratliff
Keyword(s):  
Heat Flow ◽  
Outer Boundary ◽  
Petroleum Reservoirs ◽  
Oil Production ◽  
Outer Radius ◽  
Production Well ◽  
Oil Viscosity ◽  
Reservoir Properties ◽  
Pressure Drops ◽  
Cumulative Production

Abstract Production of oil by expansion from a cylindrical reservoir composed of twoconcentric regions of different properties has been determined as a function oftime for a reservoir producing at constant terminal pressure.. The parametersinvolved are permeability, porosity, compressibility and oil viscosity. Resultsagree with those of a generally accepted method for uniform reservoirs when allparameters are taken as uniform. Cumulative production at any given time isreduced below that of the uniform reservoir when a region of considerably lowerpermeability adjoins the well; cumulative production increases when ahigh-permeability region adjoins the well. Curves are presented illustratingquantitative effects of these variations. INTRODUCTION Most petroleum reservoirs can be exploited by release of pressure andconsequent expansion of underground fluid. During part of the productionhistory of certain reservoirs by this mechanism, fluid compressibility can beconsidered small and constant. Cumulative fluid produced by this means as afunction of time was calculated for a uniform reservoir by van Everdingen andHurst.1 For certain cases where a production well has been damagedor where an acid treatment has been used, a zone of properties different fromthose of the reservoir may be created around the production well. In such acase, expansion of the reservoir fluid takes place in a system composed of twoconcentric cylindrical regions of different reservoir properties. Suchcomposite systems were studied in connection with heat flow byJaeger2 who presented a solution for temperature distribution in aradial system with an infinitely large outer radius. Similar heat flow problemshave been studied by other authors;3 Oil production from compositereservoirs was studied for constant production rate by Hurst,4Loucks and Guerrero,5 and Carter.6 THEORY This work considers constant terminal pressure. Cumulative flow iscalculated for a composite bounded system in which no flow takes place acrossthe outer boundary (Fig. 1). Since the flow is considered to be purely radial, the problem involves only one space dimension and time. It is convenient todefine the following dimensionless pressure drops (Fig. 1).

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