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桩西油田桩斜139块为河流相岩性-构造边底水油藏,砂体横向变化大,泥岩隔层薄,油水关系复杂,具有油藏埋藏深、油稠且层间差异大、密度大、地层出砂严重等特点,加之“海油陆采”井造斜点高、斜度大,造成开发难度大,注汽热损失大。本文针对目前存在的问题,总结了近几年稠油热采的经验做法,提出了一系列行之有效的技术配套方法,摸清剩余油分布状况,进一步提高储量动用程度及蒸汽吞吐开发效果。
The pile block 139 in the Zhu Xi oil field is a river facies lithologic-marginal water reservoir with a large lateral variation of sand bodies, a thin interbedded mudstone layer and complicated oil-water relations. It has the characteristics of deep buried oil reservoirs, thick oil layers and large interlayer densities Large, serious sand formation and other characteristics, coupled with “offshore oil and gas mining wells,” the slope of the high slope, causing great difficulty in the development of large steam injection heat loss. In view of the existing problems, this paper summarizes the experience of heavy oil thermal recovery in recent years, and puts forward a series of effective technical supporting methods to find out the distribution of remaining oil and further improve the utilization of reserves and the effect of steam stimulation development.