Scholarly record
GROWTH OF A HYDRAULIC FRACTURE IN THE SIDETRACKED BOREHOLE
Abstract
Initially developed as one of the most successful methods for stimulating hydrocarbon production, hydraulic fracturing (HF) has gradually found its application in related fields, such as underground mining. At the same time, the importance of controlling the crack propagation path increases, since the design of in-mine hydraulic fracturing is a complex technological task due to the influence of mine workings and other inseam boreholes. When performing HF for the purpose of degassing a coal-bearing massif, there is a problem of forming a longitudinal crack in the plane of the coal seam. Such a crack makes it possible to most effectively cross natural fractures and increase the production rate of methane. To do this, HF is carried out in closely spaced parallel boreholes with the formation of a single plane of filtration. However, the approach has a significant drawback: for successful implementation of the method, the distance between wells must be sufficiently small. In this paper, a method for creating a crack in a borehole with a sidetrack is considered and numerically investigated. Sealing of the fracturing interval is performed above the sidetracking point, which acts as a stress concentrator and promotes the onset of crack growth. As a result, a longitudinal crack propagates in the plane formed by the borehole and the sidetrack. The influence of the stress field, the properties of the medium, the free surface, as well as the direction and angle of the sidetrack on the path of the crack is studied.
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Lekontsev Yu.M., Sazhin P.V., Directional hydraulic fracturing in difficult caving roof control and coal degassing, Journal of Mining Science, 2014, vol. 50, � 5, pp. 914-917. DOI: 10.1134/s106273911405010x
Liu J., Liu C., Yao Q., Si G., The position of hydraulic fracturing to initiate vertical fractures in hard hanging roof for stress relief, International Journal of Rock Mechanics and Mining Sciences, 2020, vol. 132, 104328. DOI: 10.1016/j.ijrmms.2020.104328
Lekontsev Yu.M., Sazhin P.V., Ushakov S.Yu., Interval hydraulic fracturing to weaken dirt bands in coal, Journal of Mining Science, 2012, vol. 48, � 3, pp. 525-532. DOI: 10.1134/s1062739148030161
Mills K., Jeffrey R., Black D., Meyer T., Carey K., Developing Methods for Placing Sand-Propped Hydraulic Fractures for Gas Drainage in the Bulli Seam, Coal Operators� Conference, Australia, 2006, pp. 190-199.
Li Q., Lu Y., Ge Z., Zhou Z., Zheng J., Xiao S., A new tree-type fracturing method for stimulating coal seam gas reservoirs, Energies, 2017, vol. 10, � 9, 1388. DOI: 10.3390/en10091388
Shilova T., Patutin A., Serdyukov S., Sealing quality increasing of coal seam gas drainage wells by barrier screening method, International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, 2013, vol. 1, pp. 701-708. DOI: 10.5593/sgem2013/ba1.v1/s03.064
Sinclair L., Thompson J., In situ leaching of copper: Challenges and future prospects, Hydrometallurgy, 2015, vol. 157, pp. 306-324. DOI: 10.1016/j.hydromet.2015.08.022
Serdyukov S.V., Kurlenya M.V., Patutin A.V., Hydraulic fracturing for in situ stress measurement, Journal of Mining Science, 2016, vol. 52, � 6, pp. 1031-1038. DOI: 10.1134/s1062739116061563
Patel S.M., Sondergeld C.H., Rai C.S., Laboratory studies of hydraulic fracturing by cyclic injection, International Journal of Rock Mechanics and Mining Sciences, 2017, vol. 95, pp. 8-15. DOI: 10.1016/j.ijrmms.2017.03.008
Stephansson O., Semikova H., Zimmermann G., Zang A. Laboratory pulse test of hydraulic fracturing on granitic sample cores from Aspo HRL, Sweden Rock Mechanics and Rock Engineering 2019, vol. 52, � 2, pp. 629-633. DOI: 10.1007/s00603-018-1421-5
Damani A., Sharma A., Sondergeld C., Rai C., Acoustic emission and SEM analyses of hydraulic fractures under triaxial stress conditions, SEG Technical Program Expanded Abstracts, 2012, pp. 1-5. DOI: 10.1190/segam2012-1585.1
Serdyukov S.V., Rybalkin L.A., Drobchik A.N., Patutin A.V., Shilova T.V., Laboratory installation simulating a hydraulic fracturing of fractured rock mass, Journal of Mining Science, 2020, vol. 56, � 6, pp. 1053-1060. DOI: 10.1134/s1062739120060186
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