Thermotropic plugging material for strengthening rocks and preventing liquid and steam breakthroughs in oil mines

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Abstract

The article presents the results of laboratory studies and pilot tests of plugging materials developed by a team of authors to eliminate steam and water breakthroughs into oil mine workings, and to fill voids in rock massifs in places where steam breakthroughs occur. Conclusions are made on the influence of individual components of the compositions, which allows them to be combined to achieve the required properties of the material. The tests were carried out at an experimental section of the Yaregskoye oil mine and showed the effectiveness of the developed materials. It is planned to further develop this work, including testing the plugging compositions for surface steam injection wells.

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About the authors

L. K. Altunina

Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences

Author for correspondence.
Email: alk@ipc.tsc.ru
Russian Federation, 634055 Tomsk

I. V. Kuvshinov

Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences

Email: alk@ipc.tsc.ru
Russian Federation, 634055 Tomsk

V. A. Kuvshinov

Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences

Email: alk@ipc.tsc.ru
Russian Federation, 634055 Tomsk

L. A. Stasyeva

Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences

Email: alk@ipc.tsc.ru
Russian Federation, 634055 Tomsk

V. V. Kozlov

Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences

Email: alk@ipc.tsc.ru
Russian Federation, 634055 Tomsk

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2. Fig. 1. Yaregskoye deposit.

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3. Fig. 2. Rheological properties of solutions, measurement in oscillation mode.

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4. Fig. 3. Rheological flow curves (a) and viscosity dependences (b) of a composition with two gelling components, with the addition of basalt fiber, on the shear rate.

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5. Fig. 4. Filtration characteristics of the Yaregskoye field formation model at 20–24 and 200°C before and after pumping a plugging composition with two gelling components.

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6. Fig. 5. Steam breakthrough area (left) and a diagram of the holes for injection of the composition (right) at one of the elements of the experimental testing site of the Yaregskoye oil mine.

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