ANALYSIS OF WELL INTERVENSIONS CARRIED OUT AT PJSC “BASHNEFT”
Kruglov R.V. FSBEI HE USPTU, Ufa, the Russian Federation firstname.lastname@example.org Yarkeeva N.R. FSBEI HE USPTU, Ufa, the Russian Federation Kruglova Z.M. FSBEI HE USPTU, Ufa, the Russian Federation
Currently in most oil and gas producing regions, a deterioration of structure of reserves and the depletion of highly productive deposits, increasing the share of hard to recover reserves. Thus, the most important issue in oil industry is to increase the efficiency of oil production through the use of well interventions intended for the stimulation of oil wells.
In this paper analysis of efficiency of methods of stimulating production at ANK “Bashneft” according to different technologies was done. At the fields of RB and at the field of R. Trebsa the hydrochloric acid treatment (HAT), hydrochloric acid baths (HAB), acid hydraulic fracturing (AHF) were analyzed.
The factors that we use to estimate the success of the treatments conducted in ANK “Bashneft” were the increase of oil and liquids production, productivity index for oil before and after treatments, as well as specific volumes of acid injection. Built a clear dependence of the changes of these factors depending on the specific applied method of stimulating production.
Technology AHF showed a higher frequency of growth of productivity index than HAT. Meanwhile, the hydrochloric acid treatment with the use of KR-1HK showed better results than simple HAT.
At the field of R. Trebsа most of the wells showed a positive trend after the HAT, which is reflected in the growth of productivity index.
According to the results of the analysis the conclusions about the future applicability of the considered methods of stimulating production at the fields of RB and at the field of R. Trebsa were done.
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