ISSN 1673-8217 CN 41-1388/TE
Supervisor:China Petrochemical Corporation Limited Sponsor:Sinopec Henan Oilfield Company
Volume 34 Issue 05
Dec.  2020
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ZHANG Yongqing. 2020: Key techniques for drilling and completion of secondary casing program of horizontal wells in Dongsheng gas field. Petroleum Geology and Engineering, 34(05): 98-101.
Citation: ZHANG Yongqing. 2020: Key techniques for drilling and completion of secondary casing program of horizontal wells in Dongsheng gas field. Petroleum Geology and Engineering, 34(05): 98-101.

Key techniques for drilling and completion of secondary casing program of horizontal wells in Dongsheng gas field

  • Received Date: 2019-12-06
  • Rev Recd Date: 2020-03-21
  • Publish Date: 2020-12-08
  • In order to further reduce costs and increase efficiency, the tests on secondary casing program of horizontal wells and the optimization of casing cementing and completion were carried out in Dongsheng gas field. Based on the construction difficulties, combined with the theoretical analysis of mechanics, and the key technologies such as physical-chemical compound leakproof and collapse prevention, PDC bit with high efficiency selection techniques, and long open hole cementing techniques were optimized formed by laboratory experiment and mechanics analysis. The field application shows that the construction of six wells is smooth and no complex situation occurs. Compared with the three-stage casing program of horizontal wells in the same period, the drilling cycle is shortened by 34.98 d, the mechanical drilling rate is increased by 1.78 m/h, and the cost of drilling and completion of a single well is saved by more than 357,000 yuan.
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  • [1] WANG Lixin, WANG Donghui, CAO Shaohe, 2020: Gas-water distribution regularity and development strategies of He-2 member in Jin66 well block of Dongsheng gas field, Petroleum Geology and Engineering, 34, 61-66.
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    [3] LI Yang, 2019: Characteristics and geological significance of the formation water for 2+3~(th) member of Xiashihezi formation in Jin 66 well block of Dongsheng gas field, Petroleum Geology and Engineering, 33, 59-63.
    [4] GAO Jihua, 2019: Four-property relationship of He 2 gas reservoirs in Jin 66 well block of Dongsheng gas field, Petroleum Geology and Engineering, 33, 52-55.
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