DEVELOPMENT OF AN OPTIMAL COMPOSITION OF A COMPOSITE SOLVENT FOR ASPHALT–RESIN–PARAFFIN DEPOSITS

Authors

• Gulmira Abduvaliyevna Tadjiyeva, Tashkent State Technical University named after Islam KarimovFollow
• Xasan Irgashevich Kadirov, Tashkent State Technical University named after Islam KarimovFollow
• Shaxnoza Abduvaliyevna Tadjiyeva, Tashkent State Technical University named after Islam KarimovFollow
• Fazliddin Zokir ugli Murodullayev, Tashkent State Technical University named after Islam KarimovFollow
• Bekmurodjon Baxtiyorjon ugli Raximjonov, Tashkent State Technical University named after Islam KarimovFollow

Abstract

A solvent formulation composed of aromatic hydrocarbons of the C9 fraction and aliphatic alcohols in a 1:1 ratio, supplemented with 1–3 wt.% of a nonionic surfactant, has been developed. The proposed composition demonstrates more than a twofold increase in dissolving and washing efficiency toward paraffin-type asphaltene–resin deposits. Furthermore, the solvent system exhibits pronounced depressant–dispersant properties with respect to paraffin-containing organic deposits. Although numerous investigations have addressed the development of technologies for removing organic deposits in oilfield equipment—primarily focusing on specific aspects of eliminating or preventing asphaltene–resin–paraffin deposits (ARPD) in wells—limited attention has been given to the design of integrated approaches. In particular, insufficient research has explored comprehensive technologies aimed at both removal and prevention of organic deposits through physicochemical treatment of the unified hydrodynamic system “well-bottomhole zone (PZP)”. The objective of this study is to enhance the operational efficiency of wells during the late stage of oil field development under conditions of asphalt–resin–paraffin (ARPD) deposit formation. The hydrocarbon feedstock was derived from the rectification product of pyrolysis distillate, specifically the 70–180 °C fraction. The solvent additive “GT-АСПО,” exhibiting dispersing, dissolving, and washing properties, was employed. This composition effectively reduces the pour point of oil and inhibits paraffin crystal growth during oil production, transportation, and storage. Keywords: solvent, asphalt–resin–paraffin deposits, pyrolysis

First Page

14

Last Page

20

References

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Recommended Citation

Tadjiyeva, Gulmira Abduvaliyevna; Kadirov, Xasan Irgashevich; Tadjiyeva, Shaxnoza Abduvaliyevna; Murodullayev, Fazliddin Zokir ugli; and Raximjonov, Bekmurodjon Baxtiyorjon ugli (2026) "DEVELOPMENT OF AN OPTIMAL COMPOSITION OF A COMPOSITE SOLVENT FOR ASPHALT–RESIN–PARAFFIN DEPOSITS," Technical science and innovation: Vol. 2026: Iss. 2, Article 9.
Available at: https://btstu.researchcommons.org/journal/vol2026/iss2/9