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- W2018754557 abstract "ABSTRACT The UK East Midlands oil reservoirs are thin estuarine sands of low porosity and permeability (1–3 mD) which are normally pressured and produced by pumping. Faulting and the presence of impermeable areas and sand discontinuity has reduced the water-flood recovery efficiency and limits the scope for enhanced recovery although a considerable quantity of oil remains in place. The paper describes the approach taken to identify potential areas for additional oil recovery and describes tracing work initiated to prove continuity and examine channelling. A critical examination of enhanced recovery techniques in terms of East Midlands conditions is presented and schemes for pilot operations based on viable techniques are presented. These schemes include both multiwell pilotsand single well operations. INTRODUCTION Although Western Europe's major oilfields lie offshore, small quantities of oil are extracted from onshore European reservoirs. In the United Kingdom, BP has been producing oil from oilfields situated in the East Midlands since 1939.These oilfields are located in Nottinghamshire, Lincolnshire and Leicestershire, with the fields lying on a north-south trend paralleling the River Trent (Figure 1, Location Map). Most of the fields are in an advanced stage of depletion and some have already been abandoned (see Table 1). Current total production from the area amounts to some 1500 bopd. Before abandoning field areas it is essential to extract as much oil as possible from each reservoir, within economic and technical constraints. The East Midlands Additional Oil Project (EMAOP) was instigated early in 1979 with the twin aims of extending the producing life of these oilfields and of testing techniques of additional oil recovery. The operational experience gained will in most cases be applicable elsewhere- in some cases offshore. Enhanced Oil Recovery is the term generally applied to techniques other than pressure maintenance or water-flooding which are used to recover further oil from a reservoir depleted of its natural energy. It is also applied to techniques used to recover oil from a reservoir containing a viscous crude which will not naturally flow into a wellbore. The scope of the EMAOP is deliberately broader than this, and includes extensive field reviews, further individual well stimulations, improvement of water-flood efficiency inappropriate areas and enhanced recovery." @default.
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- W2018754557 date "1980-10-21" @default.
- W2018754557 modified "2023-10-16" @default.
- W2018754557 title "The East Midlands Additional Oil Project" @default.
- W2018754557 doi "https://doi.org/10.2118/195-1980-ms" @default.
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