«Geology, geophysics and development of oil and gas fields»

Afanaskin I.V., Kryganov P.V., Akhapkin M.Yu., Dyachenko A.G., Chen-len-son Yu.B., Shteinberg Yu.M.

UDC: 622.276.1/.4.001.57
DOI: 10.33285/2413-5011-2022-10(370)-44-56

Authors:

¹ Scientific Research Institute for System Analysis of the Russian Academy of Sciences, Moscow, Russia

Keywords: hydrodynamic well testing, convolution, deconvolution, multi-well deconvolution, CRM-model, Buckley – Leverett theory, pressure drawdown curve, well interference test

Annotation:

The article proposes a specially modified CRM-model, which could be applied as an analogue to a multi-well deconvolution of downhole pressure data acquired in a well with increasing water-cut. A CRMsim model was used as the initial modification model. Growing water-cut is accounted on the basis of the historic data by means of productivity coefficient modification.

Six different modification approaches are proposed. To test the above-said approach, the real production data from a well drilled in one of the fields located in Timan-Pechora oil- and gas-bearing region. The testing proved good results. The reservoir characteristics of the near-well and inter-well zones as well as the adjacent wells influence degree on downhole pressure change of the tested well were determined.

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