Study on Technical Measures of Romashkino Oil Field after Entering Ultra-High Water Cut Stage
- 1 School of Graduate of Southwest Petroleum University, Chengdu, China;Geological Exploration and Development Institute of Chuanqing Drilling Engineering Co., Ltd., Chengdu, China
- 2 School of Graduate of Southwest Petroleum University, Chengdu, China
- 3 School of Graduate of Southwest Petroleum University, Chengdu, China;Sichuan College of Architectural Technology, Deyang, China
- 4 School of Graduate of Southwest Petroleum University, Chengdu, China
Abstract
Romashkino oil field has large oilfield area, small formation dip, many reservoir layers, wide oil-water transition zone and complicated sedimentary environment. Since development, 3 overall development plannings and adjustments of individual block have been established. This achieves a high oil production. However, the recoverable reserves of major oil layer with high production become smaller and smaller and the water cut increases over time, the production ability of oil layer decreases. The development status of oil layer of mining siltstone, oil-water transition zone and oil layer with upswept injected water cannot be changed under present dilute well network condition, because there is no reinforced measurement to water well. This results the low oil production of Romashkino oil field. In order to improve oil production rate and reach the designed oil recovery, Romashkino oil field has been implemented many added cuttings since development. Resent researches about Romashkino oil field show: in later oilfield development stage, sidetrack and lateral drilling horizontal wells technology is very reasonable; formation hydraulic fracturing technology has been widely used in recent years; in tertiary oil recovery, sweep efficiency and flooding efficiency related technologies have been taken. This offers reference and guidance for the effective and reasonable oil field development in later period.
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