应用多种示踪剂监测火烧油层动态特征

针对乐安油田稠油开发进入中后期,汽窜及蒸汽超覆、边水浸入等问题造成油层动用不均匀的现状,开展了火烧油层试验。通过室内试验进行了示踪剂的筛选、评价、用量设计,制定了取样制度。利用气体示踪剂、温控型示踪剂、稳定同位素示踪剂等,对试验过程的火烧前缘进行动态监测,为火烧试验提供了准确、及时的动态数据,也为同类型油藏热采开发时的监测分析提供了借鉴。

Dynamic Characteristic Monitoring of In - Situ Conbustion with Multiple Tracer

Following the thick oil development of Lean oilfield enters into later period,such problems as gas channeling, steam overlaying and side water invasi on cause the uneven production of the reservoir; fire flooding test was conducte d to solve this problem. Laboratory tests were conducted to select and evaluate the suitable tracers, and determine the specific dosage; sampling schedule was a lso made. Dynamic monitoring of the leading edge of fire flooding was conducted by using the gas tracer, temperature controlled tracer and isotopic tracer, etc. , which provided accurate and timely dynamic data for the test, and can also be used for reference for heating recovery of the same type of reservoir.