胜利油田页岩油丛式井提速提效钻井技术

An efficient and fast shale oil cluster well drilling technology for Shengli Oilfield

田启忠 戴荣东 王继强 李成龙 黄豪彩

TIAN Qizhong DAI Rongdong WANG Jiqiang LI Chenglong HUANG Haocai

浙江大学海洋学院 中石化胜利油田分公司石油工程技术研究院 中石化胜利油田分公司安全环保质量管理部

Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China Petroleum Engineering Technology Research Institute, SINOPEC Shengli Oilfield Company, Dongying 257000, Shandong, China HSE Management Department of SINOPEC Shengli Oilfield Company, Dongying 257000, Shandong, China

胜利油田济阳坳陷页岩油储层属陆相断陷盆地，发育多套优质烃源岩，具有极大开发前景，但该类油藏钻井地质环境复杂，面临井壁稳定性差和钻头选型难度大等技术难题。为此，进行了井组整体设计优化、井眼轨道优化及控制技术、钻具结构优化及钻具优选、提速配套技术与精细控压钻井技术研究，形成了页岩油丛式井提速提效钻井技术。目前试验井组已完钻12口井，其中牛页XX井钻井周期53 d，试验井二开平均机械钻速达22.3 m/h，比前期试验井提高47.3%；三开采用“NOV钻头+旋转导向+导向马达+水力振荡器”钻具组合，机械钻速达13.04 m/h；水平段中后期采用“抗高温动力钻具+双水力振荡器”钻具组合，油气层穿透率高。结合实钻数据分析，提出了页岩油丛式井钻井提速提效建议和下步重点研究方向。

Shale oil reservoirs in the Jiyang Depression of Shengli Oilfield are developed in continental faulted basin, and correspond to multiple sets of high-quality source rocks, implying a great potential for development. However, these reservoirs are challenged by complex geological conditions for drilling, wellbore instability and difficult bit selection. Through researches on overall optimization of well group design, optimization and control of wellbore trajectory, structural optimization and selection of drilling tools, associated ROP enhancement technology, and precise managed pressure drilling (MPD), an efficient and fast shale oil cluster well drilling technology was developed. So far, 12 of the test wells have been drilled. For Well Niuye-XX, in the 53 d drilling period, the average rate of penetration (ROP) was 22.3 m/h in the second spud-in, 47.3% higher than that in the early stage; the ROP reached 13.04 m/h in the third spud-in by using the assembly of NOV bit + rotary steering + steering motor + hydraulic oscillator; in the middle-late stage of drilling in horizontal section, the assembly of high temperature-resistant downhole motor + double hydraulic oscillator enabled a high reservoir penetration. Coupling with actual drilling data, suggestions and focuses on future development of the efficient and fast shale oil cluster well drilling technology are proposed.

10.13639/j.odpt.202211028