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蒸汽驱开发方式已经成为蒸汽吞吐中后期开发方式转换重要技术之一。随着开发不断深入,各种开发矛盾突显,稳产难度不断增加。研究区平面上,外围井组Ⅱ、Ⅲ类开发效果区隔夹层发育,注采井间连通性差,影响蒸汽波及;纵向上,主体部位汽驱动用不均日益突出,受蒸汽超覆作用影响,厚层下部剩余油难以有效动用,针对以上两个问题,我们制定了科学的研究思路:(1)根据地震连续性评价结果,确定注采连通关系,塞选影响蒸汽驱开发效果的主要地质因素,进行地质体评价再认识。(2)单砂体精细刻画,利用井选层,地震确定边界,井震结合,优选水平井部署区域优化井轨迹。
Steam flooding development has become one of the most important technologies in the mid-late development of steam huff and puff. With the deepening of development, various contradictions in development are highlighted, and the difficulty of steady production is constantly increasing. In the study area, in the peripheral well group, the developmental effects of typeⅡand typeⅢ of the peripheral well group are developed with interval mezzanine development and poor connectivity between the injection and production wells, which affects the steam fluctuation. In the longitudinal direction, the uneven steam drive of the main part is increasingly prominent, For the above two problems, we have formulated a scientific research idea: (1) According to the seismic continuity assessment results, determine the connectivity of injection and production, the main geological factors that influence the development of steam flooding , Re-understanding of geological evaluation. (2) Detailed description of single sand body, using well selection, seismic determination of boundaries, and combination of well and well, and optimization of well trajectory in horizontal well deployment area.