杜84断块区超稠油蒸汽吞吐生产特征研究

Steam soaking features of super heavyoil in Du 84 block.

方法 根据杜 84块的地质条件、油品性质和实际生产情况 ,应用干扰剔除和归纳统计方法 ,进行超稠油单井蒸汽吞吐生产特征研究。目的 通过对超稠油单井蒸汽吞吐生产特征研究 ,认识该区块生产规律 ,进一步指导油田下一步开发。结果 超稠油井生产具有周期生产时间短、产油量低、油汽比低、产量递减快等特点 ,开发过程具有明显的阶段性。影响生产效果的主要因素有地质条件、注汽参数等。结论 超稠油油井生产对温度敏感性强 ,后续开采方式不适合转为蒸汽驱 ,应从提高油藏平面和纵向动用程度的角度 ,开展分注、选注、井组蒸汽吞吐、调剖、层间调整、层系调整和层系互换等措施。

Method\ In respect of the geological conditions, oil properties and actual production situation of Du 84 super heavy oil block, production regularities of single well steam soaking is studied. Pupose\ To guide next phase development and learn production regularities of this block through studying the characteristics of steam soaking on single super heavy oil well. Result\ Besides short production cycle,low production and OSR, quick production decline, this kind of well feature obvious staged production.Gclolgical conditions and injection/production parameters are main factors influencing recovery results.Comnclusion\ Steam drive is not suitable for its successive recovery. Separated and selected zone injection,well group steam soaking, profile adjusting, between interval adjustment and conversion should be theconsideration with a view to increase reservoir lateral and vertical utilization degree.