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The Use of Mathematical Models in the Control Environment of Underground Gas StorageNormal access

Authors: R.F. Sharafutdinov, R.A. Valiullin, A.S. Ramazanov, A.A. Sadretdinov, T.R. Khabirov and A.M. Sharipov
Event name: Near Surface Geoscience 2015 - 21st European Meeting of Environmental and Engineering Geophysics
Session: New Technologies in Applied Geophysics I
Publication date: 06 September 2015
DOI: 10.3997/2214-4609.201413682
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 648.66Kb )
Price: € 20

Summary:
The operation of underground gas storages may be accompanied by deterioration of the technical condition of wells. This is due primarily to the variables of temperature and pressure loads of the element in the wellbore during injection and extraction of gas, which most from the earth's surface and to a depth of 500-700 m. Under the influence of these factors disrupted the adhesion of cement to casing and formation, occur the leakage of columns, gas leakage from the wellbore, the accumulation of gas behind the columns and headers, behind-the-casing flows from the storage reservoir into the overlying sediments. All this results in considerable industrial gas accumulations, the complication safe operation of UGS and disturbance of the ecological situation in the area. Therefore, the development of the technology search wells - sources of technogenesis, elimination of leaks and cross-flows of gas in them is an urgent task for underground gas storage. The work deals with the identification of cross-flows in the wells of underground gas storages. We consider mathematical models and algorithms for identifying cross-flows according to the thermometer wells. Examples of the interpretation and processing of data, previous studies of wells, underground gas storage.


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