By Dominique Bourdet
This booklet on good try out research, and using complicated interpretation types is quantity three within the sequence instruction manual of Petroleum Exploration and Production.
The chapters within the publication are: rules of brief trying out, research equipment, Wellbore stipulations, influence of Reservoir Heterogeneities on good Responses, influence of Reservoir barriers on good Responses, a number of good checking out, software to fuel Reservoirs, program to Multiphase Reservoirs, distinct checks, functional elements of good try out Interpretation.
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Example text
8. Horner plot of build-up example of Figure 2. l. ~. 14) At On a Homer plot of build-up data, the straight line slope m, the pressure at 1 hour on the straight line Ap(At = l hr), and the extrapolated straight line pressure p* at infinite shutin time (At = oo) are estimated. 15) tv In an infinite system, the straight line extrapolates to the initial pressure and p*=p~. 16) The compression of the time scale becomes negligible, the Homer straight-line slope m is independent of the production time and the build-up data can be analyzed on a MDH.
O,~176176176 Slope 1/2 ooooeoe,oo ~176176176176176176176 ooeeo eeO~ Log Ap' :. 16. Pressure and derivative responses on log-log scales. Infinite conductivity fracture. Finite conductivity fracture (bi-linear flow) With the bi-linear flow geometry, pressure and derivative responses are proportional to At 1/4 . , 1985). Pressure derivative 41 ...... Slope 1/4 I iilll l. . . ,... . c':;;7 '. -" g: :, ::. :. :. 4 + ~ ::: +'. + + ::" t ::4. ":" '::' '::" ::+':" "i" "::' IIIII t1+- Log At Figure 2.
15) tv In an infinite system, the straight line extrapolates to the initial pressure and p*=p~. 16) The compression of the time scale becomes negligible, the Homer straight-line slope m is independent of the production time and the build-up data can be analyzed on a MDH. 9. 9, a new flow period is created for all rate changes (defined with the time at start t; and the rate q,), and the complete rate history prior to the analyzed period is used. 5. 18) The analysis methods 34 0.. F d u- At t k_ 0..