«Geology, geophysics and development of oil and gas fields»

TECHNOLOGICAL POSSIBILITIES AND RESULTS OF OPERATION OF HIGH FLOW-RATE OFFSHORE GAS WELLS IN RUSSIA AND ABROAD

UDC: 622.279.04
DOI: 10.33285/2413-5011-2021-9(357)-55-64

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russian Federation

Keywords: natural gas, shelf, offshore field, gas production, high-rate well, gas recovery rate, field's operation, well design

Annotation:

The relevance of the research is caused by the peculiarity of the development of an offshore oil and gas field, namely, the limited period of its operation (25...30 years). The offshore field development system should ensure a high rate of reserves recovery from the subsoil with a relatively small number of production wells in a short period of time, thereby increasing the economic efficiency of field development. The aim of the research is to substantiate the technical feasibility of operating an offshore gas condensate field with high production wells, taking into account geological conditions and the quality of reservoir rocks. The technologies, calculations of the authors and the experience of operating high-rate offshore gas wells in the Russian Federation and foreign countries are considered. Information is provided on the shelf fields where gas is produced by highly productive wells. The well designs of the studied fields are considered. The application of the technologies for achieving high flow rates in offshore fields was analyzed, making it possible to assess the conditions for gas production feasibility. The technical-technological and mining-geological conditions for achieving high gas flow rates during the operation of offshore gas condensate fields are shown. Recommendations are given to improve the efficiency of the Kirinskoye field development on the Sakhalin shelf.

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