Download Advanced Production Decline Analysis and Application by Hedong Sun PDF

By Hedong Sun

In contemporary years, construction decline-curve research has develop into the main customary instrument within the for oil and fuel reservoir construction research. besides the fact that, so much curve research is finished via machine this day, selling a "black-box" method of engineering and leaving engineers with little history within the basics of decline research. Advanced creation Decline research and Application begins from the fundamental inspiration of complicated creation decline research, and carefully discusses a number of decline tools, equivalent to Arps, Fetkovich, Blasingame, Agarwal-Gardner, NPI, temporary, lengthy linear stream, and FMB. a realistic systematic creation to every approach is helping the reservoir engineer comprehend the actual and mathematical types, remedy the sort curves and fit up research, study the strategies and examples, and reconstruct the entire examples via 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 extra bonus, on-line machine courses can be found for obtain.

  • Understand the main finished and present checklist of decline equipment, together with Arps, Fetkovich, Blasingame, and Agarwal-Gardner
  • Gain specialist wisdom with rules, tactics, real-world situations and box examples
  • Includes on-line downloadable computing device courses on Blasingame decline kind curves and normalized pseudo-pressure of gasoline wells

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9. 10. 10 Log–log type curve matching—2 26 Advanced Production Decline Analysis and Application Randomly select a point on the transparent graph paper as the match point, and read the coordinate value of the point on the log–log paper and interpretation chart paper, (∆p)M, (∆t)M, (pD)M, (tD/CD)M. 5ln    CD  This is the matching procedure for log–log analysis of homogeneous infinite formation, that is, to conduct pressure match and time match firstly, record the corresponding match points, and figure out the formation parameters.

4 that the exponential decline is the fastest, but the forecast cumulative production is the lowest; the harmonic decline is the slowest, but the forecast cumulative production is the highest; whereas the hyperbolic decline lies in between them. 1 Arps equations Basic Decline characteristics type Rate–time Rate–cumulative production Di t Q = (qi – q)/Di Dit = ln(qi/q) b = 0 Exponential q = qi e− Di t 0 < b < 1   q 1− b  qi 1 −    Hyperbolic q = qi Q= (1 − b) Di   qi   (1 + bDit)-1/b Di t = b=1 Harmonic Dit = (qi/q) – 1 q = qi (1 + Dit)-1 Q = qiln(qi/q)/Di (qi /q)b − 1 b deviation will occur in the cumulative production trend prediction.

58) 44 Advanced Production Decline Analysis and Application Based on Eq. 23), integrating Eq. 59) Substituting Eq. 57) and Eq. 59) into Eq. 60) Eq. 60) is the exponential decline equation. 63) Substituting Eq. 63) into Eq. 64) Based on Eq. 10), integrating Eq. 65) Substituting Eq. 65) into Eq. 67) Eq. 70) Substituting Eq. 70) into Eq. 71) Let b=− 1 N Eq. 71) is converted to qi q= 1b (1 + bDi t ) Eq. 72) is the hyperbolic decline equation. 73) Substituting Eq. 73) into Eq. 74) Integrating Eq. 75) Substituting Eq.

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