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Trial of liquidation cementation of boreholes at Carpathians oil and gas deposits

Kovalchuk M., Tershak B., Cheliadyn L., Sobol K., Terlyha V.

Budownictwo i Architektura

2015

Vol. 14, nr 2

71--80

Complex geological structure as well as long-term intensive operation of oil and gas deposits in Borislav-Pokutska zone of Carpathians leads to changes in thermo-dynamical parameters of pools, rock deformation and, as a result, to crippling of the boreholes and creasing and damaging of boring casing. The abovementioned actions not only complicate extraction of oil and gas but increase the technological charge on the environment. In this study 3 types of materials were investigated: PCT-I-100 – traditional tamping cement, CREA and CREA-LF tamping mixes produced by dry mixing technology that were designed by authors. Dry mixes are characterized by higher level of SiO2 because of addition of milled sand and provide better cementation quality. Developed materials are characterized by lower dehydration and water reduction, thanks to clearly chosen composition and modern chemical admixtures usage. The method of borehole eliminative cementation is also presented by authors.

Experience of modern composite materials usage in boreholes construction at cross-border region

Sobol K., Terlyha V., Kovalchuk M., Tershak B.

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo

2014

Z. 20 (170)

250--257

In the article there were presented the results of modern composite materials for cementing the boring casing during the construction of boreholes at oil-and-gas deposits of Pry-Carpathians region. Implemented investigations evidenced the effectiveness of use of composite oil-well and oil-and-gas materials and deposit.