Download Advanced Production Decline Analysis and Application by Hedong Sun PDF

By Hedong Sun

ISBN-10: 0128024119

ISBN-13: 9780128024119

In fresh years, construction decline-curve research has turn into the main general software within the for oil and fuel reservoir construction research. notwithstanding, such a lot curve research is completed by way of desktop this day, selling a "black-box" method of engineering and leaving engineers with little historical past within the basics of decline research. Advanced creation Decline research and Application starts off from the elemental thought of complicated construction decline research, and punctiliously discusses a number of decline equipment, resembling Arps, Fetkovich, Blasingame, Agarwal-Gardner, NPI, temporary, lengthy linear movement, and FMB. a realistic systematic advent to every strategy is helping the reservoir engineer comprehend the actual and mathematical versions, resolve the kind curves and fit up research, research the tactics and examples, and reconstruct all of the examples through hand, giving method to grasp the basics in the back of the software program. An appendix explains the nomenclature and significant equations, and as an further bonus, on-line computing device courses can be found for obtain.

  • Understand the main complete and present checklist of decline tools, together with Arps, Fetkovich, Blasingame, and Agarwal-Gardner
  • Gain professional wisdom with rules, strategies, real-world situations and box examples
  • Includes on-line downloadable computing device courses on Blasingame decline kind curves and normalized pseudo-pressure of fuel wells

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3) On the semi-log plot, lg q∼t is a straight line, that is, D is a constant. 1. Because of the simple linear relation, it is easy to identify and use the exponential decline law. Advanced Production Decline Analysis and Application Copyright © 2015 Petroleum Industry Press. Published by Elsevier Inc. All rights reserved. 1 Exponential decline curve. (a) Rate–time curve; (b) Rate–cumulative production curve The decline rate is used to figure out the ultimate produced fluid under exponential decline case.

88) Therefore, under constant BHFP, at the time of development by elastic energy, the flow rate of multilayer well shows multiexponential decline. As to a carbonate oil well communicating multiple fractures and caves, the decline law is similar to that of a multilayer state without cross-flow between layers, and it changes as per the multi-exponential superposition. 7 Decline Equation of Gas Well in Volumetric Gas Reservoir—Constant Pressure Production The flow equation of real gas is linearized by introducing pseudo-pressure , as given below.

10 Arps dimensionless decline flow rate integral vs. 126) Substituting Eq. 112) into Eq. 128) Rearranging Eq. 129) t Dd t Dd ∫q Dd (τ )dτ − qDd (t Dd ) 0 Substituting Eq. 119) into Eq. 130) As to the exponential decline, based on Eq. 131) Based on Eq. 132) Arps Decline Curves Analysis 57 As to the hyperbolic decline, based on Eq. 133) Based on Eq. 134) As to the harmonic decline, based on Eq. 135) Based on Eq. 11. 11 Arps dimensionless decline flow rate integral derivative vs. 12. The type curves, together with the transient part of the Fetkovich curve, constitute the Fetkovich type curve.

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