Download e-book for iPad: Fundamentals of Gas Reservoir Engineering by Jacques Hagoort (Eds.)

By Jacques Hagoort (Eds.)

ISBN-10: 0444429913

ISBN-13: 9780444429919

Fuel reservoir engineering is the department of reservoir engineering that bargains completely with reservoirs of non-associated gasoline. The major objective of reservoir engineering is the formula of improvement and construction plans that may bring about greatest restoration for a given set of monetary, environmental and technical constraints. this isn't a one-time task yet wishes continuous updating through the construction lifetime of a reservoir.The goal of this publication is to collect the basics of fuel reservoir engineering in a coherent and systematic demeanour. it's meant either for college kids who're new to the topic and practitioners, who may possibly use this ebook as a reference and refresher. every one bankruptcy will be learn independently of the others and comprises a number of, thoroughly labored workouts. those routines are a vital part of the publication; they not just illustrate the idea but in addition express how one can practice the idea to functional problems.Chapters 2, three and four are involved in the elemental actual houses of reservoirs and usual gasoline fluids, insofar as of relevance to gasoline reservoir engineering. bankruptcy five bargains with the volumetric estimation of hydrocarbon fluids in-place and the recoverable hydrocarbon reserves of gasoline reservoirs. bankruptcy 6 offers the fabric stability approach, a vintage approach for the research of reservoir functionality in keeping with the legislations of Conservation of Mass. Chapters 7-10 talk about quite a few facets of the circulate of traditional fuel within the reservoir and the wellbore: unmarried part circulation in porous and permeable media; gaswell checking out tools according to single-phase stream rules; the mechanics of gasoline circulate within the wellbore; the matter of water coning, the creation of water in addition to the fuel in fuel reservoirs with underlaying backside water. bankruptcy eleven discusses common depletion, the typical improvement choice for dry and rainy gasoline reservoirs. the improvement of gas-condensate reservoirs by way of fuel injection is taken care of in bankruptcy 12.Appendix A lists the generally used devices in gasoline reservoir engineering, in addition to their conversion elements. Appendix B contains a few detailed actual and mathematical constants which are of specific curiosity in fuel reservoir engineering. eventually, Appendix C comprises the actual houses of a few universal natural-gas elements.

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Let us suppose the well stream, consisting of n moles, splits into nL liquid moles and nG gas moles. The volume occupied by the n moles at reservoir conditions again follows from the Real-Gas Law and is given by Likewise, it follows from the Ideal-Gas Law for the volume of gas occupied by n gas moles at standard conditions that G Combining Eqns ( 3 . 3 2 ) and ( 3 . 3 3 ) , we then obtain for the formation volume factor of a wet gas where RHLG = molar condensate/gas ratio ( = n /n ) . L G Hence, the formation-volume factor for wet gas is to be corrected for the condensate content.

In fact, in many cases the composition is the only information required to evaluate gas properties. 2 COMPOSITION The main constituents of natural gas are the volatile paraffins dominated by methane. In addition, natural gas may contain significant amounts of non-hydrocarbon gases, notably nitrogen, carbon dioxide and hydrogen sulfide. Minor quantities of the rare gases helium, argon and neon may also be present. As liquid water is always present in hydrocarbon-bearing formations, natural gas is also saturated with water vapour.

2. 3. 6. Therefore, the length of the capillary transition zone is also given by Hence, the capillary rise and the length of the capillary transition zone happen to be approximately equal. This is typical for well-sorted rock. 4 below. 15 permeability: 10 and 1000 capillary pressure: see Fig. 8 RELATIVE PERMEABILITY Let us again consider a rock sample saturated with both water and gas but we now assume that the fluids are flowing. Each flowing phase will establish its own interconnected pore network.

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Fundamentals of Gas Reservoir Engineering by Jacques Hagoort (Eds.)

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