LI Shanshan, SUN Hu, ZHANG Mian, CHI Xiaoming, LIU Huan. Subdivision Cutting Fracturing Technology for Horizontal Shale Oil Wells in the Longdong Area of the Changqing Oilfield[J]. Petroleum Drilling Techniques, 2021, 49(4): 92-98. DOI: 10.11911/syztjs.2021080
Citation: LI Shanshan, SUN Hu, ZHANG Mian, CHI Xiaoming, LIU Huan. Subdivision Cutting Fracturing Technology for Horizontal Shale Oil Wells in the Longdong Area of the Changqing Oilfield[J]. Petroleum Drilling Techniques, 2021, 49(4): 92-98. DOI: 10.11911/syztjs.2021080

Subdivision Cutting Fracturing Technology for Horizontal Shale Oil Wells in the Longdong Area of the Changqing Oilfield

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  • Received Date: February 23, 2021
  • Revised Date: June 27, 2021
  • Available Online: July 14, 2021
  • The shale oil reservoirs in the Longdong area of the Changqing Oilfield are characterized by low brittleness index and undeveloped natural fractures. In this case, complex fracture networks are difficult to form. During multi-stage and multi-cluster volumetric fracturing, uniform reservoir stimulation is hard to achieve due to various effects of reservoir properties, in-situ stresses, anisotropy and inter-cluster interference of hydraulic fractures, and uneven fluid inflow within the clusters. According to the principle of maximizing fracture-controlled reserves, reservoir quality was evaluated and graded for the shale oil horizontal sections, and a heterogeneous geological model was built. On this basis, the layout of single-stage and single-cluster fractures by subdivision cutting fracturing was designed according to the spatial distribution of sweet spots and the comprehensive sweet spot index, and the fracturing parameters were optimized accordingly. As a result, a subdivision cutting fracturing technology for horizontal shale oil wells was developed. Field tests were conducted in 10 horizontal shale oil wells in the Longdong area of the Changqing Oilfield with good stimulation effect, where the daily oil production of the test wells was 35.9% higher than that of adjacent wells. With its successful application, this technology provides a new idea for the stimulation of the similar shale oil reservoirs.
  • [1]
    石道涵,张兵,何举涛,等. 鄂尔多斯长7致密砂岩储层体积压裂可行性评价[J]. 西安石油大学学报(自然科学版),2014,29(1):52–55.

    SHI Daohan, ZHANG Bing, HE Jutao, et al. Feasibility evaluation of volume fracturing of Chang-7 tight sandstone reservoir in Ordos Basin[J]. Journal of Xi’an Shiyou University(Natural Science), 2014, 29(1): 52–55.
    [2]
    蒋廷学. 页岩油气水平井压裂裂缝复杂性指数研究及应用展望[J]. 石油钻探技术,2013,41(2):7–12. doi: 10.3969/j.issn.1001-0890.2013.02.002

    JIANG Tingxue. The fracture complexity index of horizontal wells in shale oil and gas reservoirs[J]. Petroleum Drilling Techniques, 2013, 41(2): 7–12. doi: 10.3969/j.issn.1001-0890.2013.02.002
    [3]
    苏良银,常笃,杨海恩,等. 低渗透油藏侧钻水平井小井眼分段多簇压裂技术[J]. 石油钻探技术,2020,48(6):94–98. doi: 10.11911/syztjs.2020112

    SU Liangyin, CHANG Du, YANG Haien, et al. Segmented multi-cluster fracturing technology for sidetrack horizontal well with slim holes in low permeability reservoir[J]. Petroleum Drilling Techniques, 2020, 48(6): 94–98. doi: 10.11911/syztjs.2020112
    [4]
    梁潇,喻高明,黄永章,等. 大牛地气田分段多簇缝网压裂技术[J]. 断块油气田,2019,26(5):617–621. doi: 10.6056/dkyqt201905016

    LIANG Xiao, YU Gaoming, HUANG Yongzhang, et al. Segmented multi-cluster net fracturing technology in Daniudi Gas Field[J]. Fault-Block Oil & Gas Field, 2019, 26(5): 617–621. doi: 10.6056/dkyqt201905016
    [5]
    张矿生,王文雄,徐晨,等. 体积压裂水平井增产潜力及产能影响因素分析[J]. 科学技术与工程,2013,13(35):10475–10480.

    ZHANG Kuangsheng, WANG Wenxiong, XU Chen, et al. Analysis on stimulation potential and productivity influencing factors of network fractured horizontal well[J]. Science Technology and Engineering, 2013, 13(35): 10475–10480.
    [6]
    翁定为,付海峰,梁宏波. 水力压裂设计的新模型和新方法[J]. 天然气工业,2016,36(3):49–54. doi: 10.3787/j.issn.1000-0976.2016.03.007

    WENG Dingwei, FU Haifeng, LIANG Hongbo. New models and methods for hydraulic fracturing design[J]. Natural Gas Industry, 2016, 36(3): 49–54. doi: 10.3787/j.issn.1000-0976.2016.03.007
    [7]
    王汉青,陈军斌,张杰,等. 基于权重分配的页岩气储层可压性评价新方法[J]. 石油钻探技术,2016,44(3):88–94.

    WANG Hanqing, CHEN Junbin, ZHANG Jie, et al. A new method of fracability evaluation of shale gas reservoir based on weight allocation[J]. Petroleum Drilling Techniques, 2016, 44(3): 88–94.
    [8]
    蒋廷学,卞晓冰. 页岩气储层评价新技术:甜度评价方法[J]. 石油钻探技术,2016,44(4):1–6.

    JIANG Tingxue, BIAN Xiaobing. The novel technology of shale gas play evaluation: sweetness calculation method[J]. Petroleum Drilling Techniques, 2016, 44(4): 1–6.
    [9]
    白晓虎,齐银,陆红军,等. 鄂尔多斯盆地致密油水平井体积压裂优化设计[J]. 石油钻采工艺,2015,37(4):83–86.

    BAI Xiaohu, QI Yin, LU Hongjun, et al. Optimization design for volume fracturing of horizontal wells in tight oil reservoir of Ordos Basin[J]. Oil Drilling & Production Technology, 2015, 37(4): 83–86.
    [10]
    吴奇,胥云,张守良,等. 非常规油气藏体积改造技术核心理论与优化设计关键[J]. 石油学报,2014,35(4):706–714. doi: 10.7623/syxb201404011

    WU Qi, XU Yun, ZHANG Shouliang, et al. The core theories and key optimization designs of volume stimulation technology for unconventional reservoirs[J]. Acta Petrolei Sinica, 2014, 35(4): 706–714. doi: 10.7623/syxb201404011
    [11]
    WEDDLE P, GRIFFIN L, MARK PEARSON C. Mining the Bakken II–pushing the envelope with extreme limited entry perforating[R]. SPE 189880, 2018.
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