Completion Technologies Evolution of Yuri Korchagina Wells and Operation Experience of the Intelligent Wells

Abstract

The Yuri Korchagin field is the first of the fields introduced by LUKOIL in the Northern part of the Caspian Sea. The main object of development – Neocom-Volzhskaya Deposit is represented by a thin oil rim, with the underlying bottom water over the entire area of the Deposit with a massive gas cap. Given the elongated configuration of the deposits and dimensions of the Eastern and Western parts, for drilling and production of hydrocarbons in the square fields placed one offshore ice-resistant fixed platform (OIFP) in the Western sector and the block-the conductor (BC) on the Eastern section. In order to ensure the effective development of oil rims of the im field. Yu. Korchagina and reduction of geological risks associated with the lack of detailed information on the geological structure of the layers in the locations of producing wells, the adopted system of field development by horizontal wells of large extent. In total, more than two dozen production wells with the length of horizontal wells from 450 to 4900 meters have been drilled at the field. In the conditions of the shelf field. Yu. Korchagina the most important aspect in the production of hydrocarbons is to ensure a constant and uniform flow of fluid to the horizontal barrel. The basis for this is to maintain equal depression at all points of the horizontal section and reduce the risks of gas and water breakthrough. This paper describes the evolution of the completion strategy of horizontal wells of extreme length, reveals the main characteristics of the completion systems used, the results of their operation.