| Jiyuan Oilfield formation water salinity is generally high, up to100g/1or more, mainly for water-calcium chloride, sodium sulfate and water-injected water is injected water and formation water, different layers of formation water is generally not compatible, In particular, the water contains high concentrations of Triassic barium strontium ions. With the oil field development in depth, comprehensive water rising in recent years, Jiyuan Oilfield strata, wellbore and surface gathering system scaling worsening due to high pressure injection system injection wells increased year by year, seriously affecting the normal production and oilfield stable foundation.Through this research, in-depth understanding of current situation Jiyuan Oilfield scaling, scaling distribution of oil wells and gathering system scale-like composition variation, the system summed injected water Jiyuan Oilfield, stratigraphic distribution of water of chemical variation, classification analysis Jiyuan Oilfield fault systems, wellbore system, gathering system scaling mechanism, the current mainstream and emerging anti-scaling agent for system evaluation. Chemical and physical methods used in the formation and wellbore scaling and gathering system for field application, Jiyuan Oilfield elected for antifouling technologies.Stratigraphic scale governance Jiyuan Oilfield mainly bets before injection wells near wellbore scale inhibitor slug injection plant continuous dosing barium strontium inhibitor, injection plant desulfurization radical transformation of the new nanofiltration device; wellbore scaling governance mainly general scaling for scaling lighter oil wells rings airdrop plus ZG-108scale inhibitor for oil fouling severe fouling of solid growth under downhole devices and underground drip doser; gathering system mainly uses scaling governance fouling site processes continuous dosing polyethylene succinate inhibitor, oil pipeline scaling using high pressure jet physics clear dirt. |
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