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辽河油田杜84块兴隆台油藏纵向划分为兴Ⅵ组、兴Ⅲ组、兴Ⅱ组、兴Ⅰ组四套油层组。其中,兴Ⅵ组采用直平组合SAGD(蒸汽辅助重力泄油技术),兴Ⅰ组采用双水平井SAGD,兴Ⅱ、Ⅲ组互层状油藏水平井吞吐挖潜,实现杜84块多元化立体高效开发。通过开发方式转换,杜84块实现了油田纵向储量的均匀动用,很多区域达到或超过油田标定采收率(29.2%)。通过深化地质研究,发现兴Ⅱ组还存在未得到有效动用的单砂体油藏。结合部署界限和油藏发育情况,在兴Ⅱ组隔夹层发育稳定区域部署规划两口水平井杜84兴H2111井、杜84兴H2112井,控制地质储量11.5×104t,部署区域基本未动用。两口水平井目的层厚度在7m左右,水平段长度为240m以上,单井储量在5×104t左右。应用近钻头地质导向、随钻地质跟踪以及水平井同注同采技术,挖潜单砂体油藏潜力。
The Lubehe Oilfield Du 84 block Xinglongtai oil reservoir is divided into Xing Ⅵ group, Xing ¢ ó group, Xing ¢ ò group and Xing ¢ ö group. Among them, the Hing Group Ⅵ SAGD (Steam Assisted Gravity Drainage Technology), Hing Group Ⅰ using two horizontal wells SAGD, Hing Group II horizontal wells in the horizontal well Hunting potential, to achieve Du Dusheng Diversified three-dimensional Efficient development. Through the development mode conversion, Du 84 block has realized the uniform utilization of vertical reserves of oilfields, and the measured recovery rate of oilfields has reached or exceeded that of many areas (29.2%) in many areas. By deepening the geological study, it is found that there is still a single sand body reservoir that is not effectively used in XingⅡgroup. In combination with the deployment limits and the reservoir development, two horizontal wells Du 84 Xing H2111 and Du 84 Xing H2112 were planted in the stable development zone of the interbedded mezzanine in Group II, with a controlled geologic reserve of 11.5 × 10 4 t. The deployment area was basically unused. The thickness of the target layer of the two horizontal wells is about 7m, the horizontal length is more than 240m, and the single well reserves are about 5 × 104t. The application of near-bit geosteering, while-drilling geology tracking and horizontal well injection with the same technology, potential single tap potential of the reservoir.