Deconvolution method is generally used to eliminate wellbore storage dominant period of well testing. Common Deconvolution techniques require knowledge of both pressure and rate variations within test duration. Unfortunately, accurate rate data are not always available. In this case, blind deconvolution method is used. In this work, we present a new approach to improve the ability of blind deconvolution method in well testing. We examined the behavior of rate data by comparing it with a special class of images and employed their common properties to represent gross behavior of extracted rate data. Results of examinations show ability of our developed algorithm to remove the effect of wellbore storage from pressure data. Our Algorithm can deal with different cases where wellbore storage has made two different reservoirs behave identical in pressure response. Even if there is no wellbore effect or after wellbore storage period is passed, proposed algorithm can work routinely without any problem.

References

References
1.
Cheng
,
Y.
,
Lee
,
W. J.
, and
McVay
,
D. A.
, 2005, “
Fast-Fourier-Transform-Based Deconvolution for Interpretation of Pressure-Transient-Test Data Dominated By Wellbore Storage
,”
SPE Reservoir Eval. Eng.
,
8
(
3
), pp.
224
239
.
2.
van Everdingen
,
A. F.
, and
Hurst
,
W.
, 1949, “
Application of the Laplace Transformation to Flow Problems in Reservoirs
,”
Trans. AIME
,
186
, pp.
305
324
.
3.
Bahabanian
,
O.
,
Ilk
,
D.
,
Hosseinpour-Zonoozi
,
N.
, and
Blasingame
,
T. A.
, 2006, “
Explicit Deconvolution of Wellbore Storage Distorted Well Test Data
,”
SPE Annual Technical Conference and Exhibition Held in San Antonio, Texas, Sept. 24–27
.
4.
Iik
,
D.
,
Valko
,
P. P.
, and
Blasingame
,
T. A.
, 2006, “
Deconvolution of Variable-Rate Reservoir-Performance Data Using B-Splines
,”
SPE Reservoir Eval. Eng.
,
9
(
5
), pp.
582
595.
5.
Carasso
,
A. S.
, 2001, “
Direct Blind Deconvolution
,”
SIAM J. Appl. Math.
,
61
(
6
), pp.
1980
2007
.
6.
Lee
,
J.
, 1982,
Well Testing (SPE Textbook Series)
,
Society of Petroleum Engineers
, Richardson, TX.
You do not currently have access to this content.