Technological operations using aqueous solutions of surface-active substances are mandatory elements of a significant number of well operation and repair technologies. Currently, the results of studies on the use of aqueous solutions of surface-active substances for regulating phase and energy interactions in the processes of drilling wells, discovering productive formations, increasing oil recovery, treating the bottom-hole formation zone of production and injection wells, oil preparation, and the fight against corrosion of underground equipment are known inhibition of organic deposits.
In modern conditions, increasing the effectiveness of the use of aqueous solutions of surfactants to remove organic deposits formed during the operation of wells is becoming relevant.
The paper presents the results of the analysis of the use of aqueous solutions of surfactants in the field facilities of Tatneft Public Joint Stock Company. The conditions of washing are studied from the point of view of the hydrodynamics of the process, in particular, the pressure values at the beginning of washing and at the end of washing. The main factors determining the effectiveness of well flushing have been identified.
flushing liquids, aqueous solution, surfactants, pressure, deep pump equipment, efficiency
GD 153-39.0-381-05. Tekhnologiya glusheniya i promyvki neftedobyvayushchih skvazhin s sohraneniem kollektorskih svojstv produktivnyh plastov [Technology for killing and washing oil wells while maintaining reservoir properties of reservoirs]. Bugul'ma: TatNIPIneft', 2005, 50 p. (in Russian)
Guskova I.A., Khayarova D.R. Issledovanie osobennostej primeneniya poverhnostno-aktivnyh veshchestv dlya udaleniya asfal'tosmoloparafinovyh otlozhenij [Study of some peculiarities of surface-acttve substances application for removal of asphalttarparaffin sediments]. Neftepromyslovoye delo, 2011, No. 2, pp. 44-49. (in Russian)
Gurvich L.M., Sherstnev N.M. Mnogofunkcional'nye kompozicii PAV v tekhnologicheskih operaciyah neftedobychi [Multifunctional compositions of surfactants in technological operations of oil production]. M., VNIIOENG, 1994, 267 p. (in Russian)
Holmberg K., Jyonsson B., Kronberg B., Lindman B. Poverhnostno-aktivnye veshchestva i polimery v vodnyh rastvorah [Surfactants and polymers in aqueous solutions]. Per. s angl., M., BINOM, Laboratoriya znanij, 2009, 528 p. (in Russian)
D.R. Khayarova, Ph.D., associate professor of the department «Development and explotation of oil and gas fields», Almetyevsk State Oil Institute, Almetyevsk, Republic of Tatarstan, Russian Federation
D.R. Khayarova, I.I. Mannanov Primenenie vodnyh rastvorov pav v tehnologicheskih processah jekspluatacii i remonta skvazhin [Application of solutions of surface-active substances in technological processes of operation and repair of wells]. Neftyanaya Provintsiya, No. 1(21), 2020. pp. 194-204. DOI https://doi.org/10.25689/NP.2020.1.194-204 (in Russian)