移动式多级分离计量装置方案设计

THE SCHEME DESIGN OF A MOBILE AND MULTISTAGE SEPARATION METERING DEVICE

针对油田传统的计量方式不能满足油田生产测试过程中各井的产量测试,特别是几乎不可能同步测试、记录功图测试阶段的产油气量,难以在较宽的计量范围内实现精确计量要求的现状,设计了移动式多级分离计量装置的方案。介绍了移动式多级分离计量装置的结构、原理、主要技术指标、系统的组成、技术关键和需要在设计中重点考虑的几个问题。着重阐述了设计过程中在以往的技术和经验的基础上开发和采用了高效气-液旋流分离技术、高效多级液-液旋流分离技术、破乳技术、多次沉降分离提高纯油计量精度技术、计量分离器的排液技术和最佳流量计的选择标准等几项关键技术,并对如何破除混合液中的乳化水以增强分离效果,以及在串联旋流器时应重点考虑以底流还是溢流为主的参数控制方式等问题做了研究。

A mobile,multistage and skid-mounted oil well metering device is developed for the traditional measurement can′t meet the needs of yield test of each oil well in the process of production,especially,it can′t survey or record gas production at test stage and is difficult to implement accurate measurement in rather wide measurement range.The structure,operation principle,key technical indexes,systematical composition,key problems in technology and consideration for design are introduced.Based on the traditional technology and empirical foundation,several key technologies,such as high efficient gas-liquid spiral flow and separation,high efficient multistage liquid-liquid spiral flow and separation,emulsion breaking technology,improving the pure oil measuring accuracy by multi- time settling out,the unload technology of the metering separator and the selection criteria of the optimum flow measurement are presented.Two issues are studied in detail,which are how to improve measuring accuracy by exploding emulsified water to enhance separating effect at the series cyclone time,the problem of the parameter control mode is seriously considered,the primary factor is either underset or overfall.