摘要
涠洲12-1油田位于南海西部海域,富含SO42-的注入水(海水)与含有Ba2+、Sr2+的地层水不配伍,导致该油田中块油井结垢现象严重。所结垢为硫酸钡锶垢,硫酸钡含量约占70%,硫酸锶含量约占30%。分析了成垢机理,并对可能的7种防垢方案进行了对比分析,认为注入井调剖与油井注防垢剂组合方案是涠洲12-1油田中块油井防垢的最佳方案。
Weizhou 12-1 oilfield is located in the western of the South China Sea. The serious scal- ing has occurred in the oil wells in the middle block of the oilfield, due to the incompatibility between injected sea water with rich SO4^2- and formation water with rich Ba^2+, and Sr^2+. The scale is the barium strontium sulfate scale, containing 70% barium sulfate and 30% strontium sulfate. Through analyzing the mechanism of scale formation and evaluating 7 probable anti-scaling methods, it is deemed that the combined method of profile controlling in injectors plus anti-scaling agent in producers is the best anti-scaling plan for the oil wells in middle block of Weizhou 12-1 oilfield.
出处
《中国海上油气(工程)》
2006年第4期264-266,共3页
China Offshore Oil and Gas
关键词
涠洲12-1油田
硫酸钡锶垢
成垢机理
组合防垢
Weizhou 12-1 oilfield
barium strontium sulfate scale
mechanism of scale formation
combined anti-scaling