石油圈中国石化新闻网讯 据Neftegaz.RU网秋明3月11日消息 俄罗斯石油公司的子公司Tyumenneftegaz于2018年在Russkoe油田钻探了15个井下分离器，同比增长30%。 所有钻井水平井筒和侧井的长度均超过16000公里。与常规水平井相比，该技术可使启动油率提高20-30%。鉴于Russkoe油田的地质条件，井下分流器结构工是最有效的选择。 虽然钻井和完井过程需要部署先进技术，但这类井的成本比单井施工或侧钻要低得多。与传统水平井相比，这种设计的井具有更大的净含油量。 在不影响设计井网的情况下，侧向力可从水平井筒向任意方向延伸，并可在一定的含油区间内钻进。在过去的3年里，Russkoe油田的商业钻井速度提高了30%，钻井周期减少了16%，这大大节约了建造成本。 研究结果表明，该鱼骨钻进技术已成功地适应了罗斯科油田的实际情况。该子公司计划在中期钻探100多口鱼骨井。 引入新的钻井和完井技术是实施Rosneft 2022年战略的重点之一。该公司不仅建造了新设计的油井，而且使用了更有效的钻井泥浆，为国内钻井设备的发展实施了新技术，做出了贡献。 吴慧丹 摘译自 Neftegaz.RU 原文如下： Tyumenneftegaz achieved a 30% increase in downhole splitter drilling at Russkoe field Tyumenneftegaz, a subsidiary of Rosneft, drilled 15 downhole splitters at Russkoe field in 2018, which is 30% more year-on-year. All the drilled horizontal wellbores and laterals are over 16 000 km in length. This technology enables increasing a start-up oil rate by 20-30%, as compared to a conventional horizontal well. Given geology of Russkoe field, the downhole splitter construction is the most efficient option. Although the well drilling and completion process requires deploying advanced technologies, the cost of such wells turns out to be considerably lower than that of individual well construction or sidetracking. A well of such design provides a significantly wider coverage of net oil pays vs. a conventional horizontal well. The laterals can extend in any direction from the horizontal wellbore and drill in certain oil bearing intervals without disturbing the designed well pattern. Over the past 3 years, Russkoe field saw a 30% increase in the commercial drilling speed and a 16% reduction in the drilling cycle, which enabled meaningful well construction cost savings. The achieved results confirm that the fishbone drilling technology has been successfully adapted to the conditions of Russkoe field. The subsidiary intends to drill over 100 fishbone wells in the mid-term. The introduction of new well drilling and completion technologies is one of the priorities in implementing the Rosneft 2022 Strategy. The company not only constructs wells of new design, but also uses more effective drilling muds, contributes to the development of domestic drilling equipment and implements new technologies.
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