Published April 2022, Pg. 28-31

Section: Oil and gas field development and exploitation

UOT: 622.276.1

DOI: 10.37474/0365-8554/2022-04-28-31

Evaluation of the skin-factor effect on the operation of oil-gas producing wells with viscous-plastic oil

A.V. Sultanova Cand. in Tech. Sc. - Azerbaijan State University of Oil and Industry

It is well known that in most oil and gas producing regions including Tatarstan and Bashkiria (Russian Federation), Azerbaijan, Kazakhstan, etc., a significant part of produced liquid hydrocarbons consists of oils with abnormal rheological properties, which contain paraffin, asphaltenes, and resin. Such types of oils are related to those of abnormal or non-Newtonian.

The paper studies the effect of skin-factor on the recovery of oil with abnormal properties. The features of such a well product are of viscous-plastic liquid nature with an initial shear gradient. It is shown that this system has properties different from non-Newtonian fluids. It is suggested to describe the effect of skin-zone in the system of the equation via the parameter of “skin-factor”, which changes in wide diapasons depending on the nature of pollution of the skin zone. After the specification of “skin factor”, additional measures are carried out in the well on the treatment of the bottom-hole zone (acid treatment, additional perforation, etc.), which will allow regulating the productivity of the operation well.

References:

1. Mirzadzhanzade A.Kh., Baikov V.A. Paradoksy neftyanoy fiziki. – M.:-Izhevsk: Institut komp´yuternykh issledovaniy; NITS “Regulyarnaya i khaotichnaya dinamika”. 2004.

2. Mirzadzhanzade A.Kh., Aliyev N.A., Yusifzade Kh.B. i dr. Fragmenty razrabotki morskikh neftegazovykh mestorozhdeniy. – Baku: izd-vo “Elm”, 1997, 408 s.

3. Entov V.M., Glivenko E.V. Mekhanika sploshnoy sredy i ee primenenie v gazoneftedobyche. – M.: Nedra, 2008, 292 s.

4. Lobusev A.V., Lobusev M.A., Nazarova L.N. Modelirovanie razvedki i razrabotki virtual´nogo neftegazovogo mestorozhdeniya. – M.: Nedra, 2008, 124 s.

5. Fyodorov V.N., Sorokin P.M. Otsenka stepeni vozdeistviya burovykh rastvorov na fil´tratsionnye svoistva prizaboynoy zony plasta // Burenie i neft´, 2010, No 5, s. 22-25.

6. Shagiyev R.G., Levchenko I.Yu. Analiz sostavlyayushchikh skin-faktorov na primere issledovaniy skvazhin Pamyatno-Sasovogo mestorozhdeniya // Neftyanoe khozaistvo, 2002, No 12, s. 67-69.

7. Shchelkachev V.N. Razrabotka neftevodonosnykh plastov pri uprugom rezhime. – M.: Gosizdat, 1959, 462 s.