四维地震技术在稠油开采中的应用
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摘要
地震信息对注蒸汽开采稠油油藏的蒸汽热场的响应主要是储集层对应的地震反射波的振幅、层速度、延迟时间的变化 ,这些参数发生差异的区域就是蒸汽热前缘推进到的范围 ,而没有产生变化的区域就是蒸汽热场未影响到的范围 ,即是剩余油分布区。克拉玛依油田九5 区 95 1 5 9井区存在 3个剩余油区域 :95 1 5 9井与 95 1 78井之间、95 1 40井以南和 95 1 97井以北。在剩余油分布规律研究的基础上 ,结合动态监测资料及生产动态数据等 ,对蒸汽驱实施分类调整、平面加密、封堵调剖等措施 ,取得了显著效果 ,使该区由 1 995年到 1 999年年产油量综合递减从5 .5 %降至 -6.7% ,油汽比由 0 .1 2提高到 0 .2 7。彩图 6表 1参2
The response of seismic information to the steam heated zone is observed mainly through the variation of amplitude, interval velocity and time delay of the reflected wave. The zones with obvious variation belongs to the advancing scope of steam front, and those with no or less variation have not been influenced by the steam heat, i.e., remaining oil distributed zones. The remaining oil distributed zones of Well 95159 exist in three areas as between Well 95159 and Well 95178, south to Well 95140 and north to Well 95197. Based on the study of remaining oil distribution and some other dynamic production data, we improved the steam flooding process through sorted adjustment, planar infill drilling and profile control by plugging and packing, and the result is satisfactory. In 1999, the oil production decline was reduced from 1995's 5.5% to -6.7%, and the oil to steam ratio from 1995's 0.12 to 0.27 %.
The response of seismic information to the steam heated zone is observed mainly through the variation of amplitude, interval velocity and time delay of the reflected wave. The zones with obvious variation belongs to the advancing scope of steam front, and those with no or less variation have not been influenced by the steam heat, i.e., remaining oil distributed zones. The remaining oil distributed zones of Well 95159 exist in three areas as between Well 95159 and Well 95178, south to Well 95140 and north to Well 95197. Based on the study of remaining oil distribution and some other dynamic production data, we improved the steam flooding process through sorted adjustment, planar infill drilling and profile control by plugging and packing, and the result is satisfactory. In 1999, the oil production decline was reduced from 1995's 5.5% to -6.7%, and the oil to steam ratio from 1995's 0.12 to 0.27 %.
引文
1 常毓文 ,彭通曙 ,江力生等 .浅层稠油油藏注蒸汽开发动态监测技术 .见 :第七届重油及沥青砂国际会议论文集 .北京 :石油工业出版社 ,1 998.340～ 347.
2 霍进 ,陈荣灿 ,蒋福修 .浅层稠油油藏注蒸汽纵向动用程度监测技术的应用 .特种油气藏 ,1 998,5(3) :2 9～ 33
2 霍进 ,陈荣灿 ,蒋福修 .浅层稠油油藏注蒸汽纵向动用程度监测技术的应用 .特种油气藏 ,1 998,5(3) :2 9～ 33
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