Key words: oil reservoir, well, productivity index, acidizing, production, bottom hole pressure.
This paper presents the results of applying the two acid solutions for stimulation of oil wells in the Bashkir sediment rocks in the fields of Perm region. The influence of technological and geo-physical parameters of the layers on the success of the acid treatments is estimated by comparing the rates of well productivity before and after acid treatment. It is observed that after the acid treatment, water content in well products increases in the majority of cases. With the growing volume of acid solution pumped per unit of effective oil acid, performance impact is increasing. The average depth of penetration of the acid solution in the bottom zone of 0.5 m. Overall it was obtained that conducted acid treatment stimulation of the oil wells was effective and provided the lasting effects on the well productivity. The rate of success is higher for the wells with low reservoir pressure.
References
1. Poplygin V.V., Davydova I.S, Kuznetsov I.V., Galkin S.V., The results of composition DN-9010 treatment of bottom zones of layers BS of oilfield of
Verkhnekamsk deposit of potash area (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya.
Neftegazovoe i gornoe delo. – 2010. – № 5. – S. 70–74.
2. Poplygin V.V., Beloglazova E.A., Ivanova A.S., Analysis of acid treatments in complex geological and technological conditions (In Russ.), Vestnik
Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta.
Geologiya. Neftegazovoe i gornoe delo, 2014, no. 10, pp. 83–90.
3. Poplygin V.V., Davydova A.V., Pronin N.V. et al., Evaluating the effectiveness of acid treatment in Turnaisian formation of Perm region (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2013, no. 1, pp. 78–79.
4. Galkin V.I., Khizhnyak G.P., Amirov A.M., Gladkikh E.A., Assessment of efficiency of core sample acidizing by means of regression analysis (In Russ.),
Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo
universiteta. Geologiya. Neftegazovoe i gornoe delo, 2014, no. 13, pp. 38–48.
5. Poplygin V.V., Poplygina I.S., Evaluation of rational bottom-hole pressure for oil deposits with high gas saturation (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2012, no. 10, pp. 104–105.
6. Poplygin V.V., Dynamics of the wells productivity in case of the high gas saturation of the oil (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2011, no. 10, pp. 28–29.
To buy the complete text of article (Russian version a format - PDF) or to read the material which is in open access
.
