Published March 2014

The studying of formation development from monocline oil fields via long filters on example of Siyazan field

F.T. Murvatov

A.G. Kerimovа

Production rate of oil producing well in onshore oil fields of our Republic decreases from year to year. It is connected with a lot of complications, occurring in formation system and various types of risks as well, which form completion technologies applied in fields. Completion technology applied in Siyazan monocline oil field without consideration of production characteristics and capacity flow of some geological objects, in early stages were providing the presence of comparatively high initial oil production rate, but in further stages they were followed by very serious risks (geological, ecological, production and etc). Thus, the breaking of formations natural isolation in fields during long filters application, coordination of formations of various regimes and pressures, mixing of waters of different characters and significant increase of aggression properties as a result of contact, formation contamination due to outside contaminants, including bacterium, carbonates and so on leading to corrosion, prevent normal development of the field. For the purpose of studying influence of well completion technologies impact on oil well production, dynamics of changing of produced oil from wells in dependence on filter length in fields different parts has been analyzed. Negative impact of filters length increasing on wells production rate has been detected. That is why it is recommended to reject application of long filters in monocline fields and instead of them to use interval filters.