No.2(42),2025 PP.200-213

Neftyanaya provintsiya No. 2(42), 2025

Study of the efficiency of displacement of drilling mud by cementing mud at various annular gaps

R.I. Shafigullin, F.F. Akhmadishin, A.R. Iskhakov, D.A Syrkin, D.N. Kamasheva
DOI: https://doi.org/10.25689/NP.2025.2.200-213

Abstract

The main condition for ensuring the tightness of the annular space of wells is the complete displacement of the drilling mud by the cementing mud from the cementing interval. It is obvious that the success of cementing operations significantly depends on the geometric conditions of the wellbore, which can be complicated by large cavernosity, borehole curvature, channeling, borehole sludge contamination, formation of a filter cake on the wellbore walls, the presence of absorbing horizons and the geometry of the annular space itself. In this paper, the effect of the annular gap value on the completeness of drilling mud displacement by cement in a borehole is investigated. A test bench was created for the research and hydrocarbon-based drilling mud (OBM), water-based drilling mud (WBM) and cement slurry prepared from oil-well portland cement (I-G-SS-1) with a density of 1900 kg/m3 were used. The purpose of this study is to determine the effect of the degree of displacement and mixing of drilling mud with cement on the quality of the resulting cement stone.

Key words:

fastening quality, cement slurry, drilling mud, displacement, annular gaps

References

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Authors

R.I. Shafigullin, Deputy General Director for Repair, Well Drilling and Enhanced Oil Recovery Executive apparatus PJSC «Tatneft»
75, Lenina Str., Almetevsk, 423450, Russian Federation
E-mail: shafigullin@tatneft.ru

F.F. Akhmadishin, PhD (engeneering), Head of the Drilling Department, TatNIPIneft Institute of PJSC Tatneft
186A, Sovetskaya Str., 423403, Almetevsk, Russian Federation
E-mail: ffa@tatnipi.ru

A.R. Iskhakov, PhD (engeneering), Head of the Well Fastening Laboratory of the Drilling Department, TatNIPIneft Institute of PJSC Tatneft
186A, Sovetskaya Str., 423403, Almetevsk, Russian Federation
E-mail: krep@tatnipi.ru

D.A. Syrkin, Junior Researcher, TatNIPIneft Institute of PJSC Tatneft
186A, Sovetskaya Str., 423403, Almetevsk, Russian Federation
E-mail: dmsyrkin@tatnipi.ru

D.N. Kamasheva, Engineer, TatNIPIneft Institute of PJSC Tatneft
186A, Sovetskaya Str., 423403, Almetevsk, Russian Federation
E-mail: KamashevaDilyaN@tatnipi.ru

For citation:

R.I. Shafigullin, F.F. Akhmadishin, A.R. Iskhakov, D.A Syrkin, D.N. Kamasheva Stend dlya issledovaniya vytesneniya burovogo rastvora tsementnym pri razlichnykh kol'tsevykh zazorakh [Study of the efficiency of displacement of drilling mud by cementing mud at various annular gaps]. Neftyanaya Provintsiya, No. 2(42), 2025. pp. 200-213. DOI https://doi.org/10.25689/NP.2025.2.200-213. EDN TDBSKE (in Russian)

© Non-governmental organization Volga-Kama Regional Division of the Russian Academy of Natural Science, 2015-2025 All the materials of the journal are available under the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/)

Study of the efficiency of displacement of drilling mud by cementing mud at various annular gaps R.I. Shafigullin, F.F. Akhmadishin, A.R. Iskhakov, D.A Syrkin, D.N. Kamasheva DOI: https://doi.org/10.25689/NP.2025.2.200-213

Key words: fastening quality, cement slurry, drilling mud, displacement, annular gaps

Study of the efficiency of displacement of drilling mud by cementing mud at various annular gaps

R.I. Shafigullin, F.F. Akhmadishin, A.R. Iskhakov, D.A Syrkin, D.N. Kamasheva
DOI: https://doi.org/10.25689/NP.2025.2.200-213

Key words:

fastening quality, cement slurry, drilling mud, displacement, annular gaps