曙一区杜84块兴组块状超稠油油藏水平井蒸汽吞吐试验

Horizontal well steam huff and puff experiment on super heavy oil block reservoir, Xing VI formation, Du 84 block, Shu 1 area.

方法 应用油藏工程技术 ,结合矿场试验 ,进行超稠油水平井蒸汽吞吐研究。目的 优选该块油藏开发方式 ,为经济高效地开发超稠油油藏创造条件。结果 块状超稠油油藏水平井按照目前注采参数实施蒸汽吞吐开采 ,除遵循一般的蒸汽吞吐开采规律以外 ,还表现出单周期产油量高、周期长、回采水率低的特点 ;注汽强度、注汽速度均较低 ,注汽压力随周期增加而降低。结论 水平井蒸汽吞吐开采在技术和经济上均是可行的 ;选择合理的注汽参数是提高蒸汽吞吐效果的关键 ;采取配套合理的采油工艺技术是提高产量的保证。

Method Using reservoir engineering and incorporating field tests, horizontal steam huff and puff for super heavy oil reservoir is studied. Purpose To optimize recovery pattern of this reservoirand create conditions for effectively and economically developing super heavy oil reservoir. Result Besidescommon regularities in applying steam huff and puff, same technique applied on block super heavy oilreservoir under available injection and production parameters presents single cycle high production, longterm, low water recovery, relatively low steam injection intensity and rate, injection pressure decreaseswith the elongation of each cycle as well. Conclusion it is feasible to develop with horizontal steam soaking in respect of technology and economics, but the key to success is to select reasonable injection parameters and adopt complementary producing technique.