Geology, geography and global energy

Scientific and Technical Journal

Analysis of water cut wells at Astrakhan gas-condensate field

2016. №1, pp. 7-14

Volkova K.V. - post-graduate student, Gubkin Russian State University of Oil and Gas, 65 / 1 Leninskiy ave., Moscow, 119991, Russian Federation, kristina_crystal@mail.ru

Astrakhan gas-condensate field is being developed since 1987 and is at a late stage of the development and operation of wells. This is due to the fact that there is a falling reservoir pressures, begins an intense flow of bottom water with the ousting of the hydrocarbon fluid from the bottom and fall of oil production and gas. There are frequent cases of breakthrough water injection wells drained areas of permeable reservoir. In some cases, the water content in produced oil reaches 90 % or more and in gas wells may stop the flow of gas into the well due to downhole reservoir water packs. The presence in the produced gas produced water and its steady growth during well operation is one of the major problems of Astrakhan gas-condensate field’s development. Thus, work to limit water flow into the well, in practice, have to spend on all the fields, and the methods used are varied and depend on the geological and physical conditions of the deposit. In order to analyze the degree of flooding production wells, as well as tracking the dynamics of flooding were built according to the quantities of water and gas factor associated water from this reservoir pressure for all active wells of the Astrakhan gas-condensate field. The analysis shows the output of the activity of the aquifer basin, analyzed the distribution of local zones of well watering products, it found that the formation water is introduced selectively on local zones of increased conductivity. Based on the findings recommendations for further exploitation of Astrakhan gas-condensate field.

Key words: Астраханское газоконденсатное месторождение, обводнение, водоизоляция, водогазовый фактор, интенсификация, эксплуатационные скважины, пластовая вода, локальные зоны, депрессия, Astrakhan gas-condensate field, watering, waterproofing, water and gas factor,

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