疏松砂岩油藏封隔颗粒防砂控水技术矿场实践

南海东部的F油田为疏松砂岩稠油油田，针对投产后出现的储层出砂堵塞筛管，油井产量递减快、见水后含水上升快等难题，在充分调研常规防砂控水技术优缺点的基础上，提出了一种由亲油疏水材料构成的封隔颗粒防砂控水技术。利用实验、油藏工程、数值模拟等方法评价了封隔颗粒的防砂控水效果。结果表明：封隔颗粒防砂控水技术具有无需找水、全井段控水、防砂、绿色环保等多种优势，配合自适应流量控水阀(autonomous inflow control device, AICD),防砂控水效果进一步提升；F油田部分单井矿场采用封隔颗粒防砂控水后，有明显的无水采油期，在相同采出程度的情况条件下，含水上升率明显更低，防砂控水增油效果显著。该技术为类似疏松砂岩油田的防砂控水开发提供了借鉴，推广前景良好。

The Application for Packer Particles of Sand and Water Control Technology in Unconsolidated Sandstone Reservoir

The F oilfield is an unconsolidated sandstone heavy oil oilfield in the Southeast China Sea, some problems appear including wellbore is blocked by sand producing, oil well production decline quickly, and water increases quickly, and hence, a new sand and water control technique of packer particles is proposed based on the investigation of conventional sand and water control technologies. Through the methods of reservoir engineering, laboratory experiments, numerical simulation, the sand and water control effect of packer particles is analyzed. Results show that: (1) the sand and water control technique of packer particles has many advantages, such as no need to search for water, water control of the whole well section, sand control, and green environmental protection, etc. the water control effect is further improved with the adaptive flow control valve AICD. (2) After field application, there is an obvious water-free oil production period, and the rising rate of water cut is significantly lower under the same condition of recovery, the sand and water control effect is significant. This technology provides a reference for the similar unconsolidated sandstone reservoirs and has a good promotion prospect.