Volume 37 Issue 4
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2020  >  37(4): 405-411
JIANG Guancheng, CHEN Rongchao, TAN Bin, DONG Tengfei, JIA Dongmin, LYU Kaihe, PENG Chunyao, BAI Yang, LI Bin. Protecting the Low Permeability and Ultra-low Permeability Pay Zones During Drilling: Necessity, Importance and Developing Tendency[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(4): 405-411. doi: 10.3969/j.issn.1001-5620.2020.04.001
Citation: JIANG Guancheng, CHEN Rongchao, TAN Bin, DONG Tengfei, JIA Dongmin, LYU Kaihe, PENG Chunyao, BAI Yang, LI Bin. Protecting the Low Permeability and Ultra-low Permeability Pay Zones During Drilling: Necessity, Importance and Developing Tendency[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(4): 405-411. doi: 10.3969/j.issn.1001-5620.2020.04.001
shu

Protecting the Low Permeability and Ultra-low Permeability Pay Zones During Drilling: Necessity, Importance and Developing Tendency

doi: 10.3969/j.issn.1001-5620.2020.04.001

  • 1. State Key Laboratory of Oil and Gas Resource and Prospecting, China University of Petroleum, Beijing 102249;

  • 2. School of Petroleum Engineering, China University of Petroleum, Beijing 102249;

  • 3. CNPC Engineering Technology R&D Company Limited, Beijing 102206;

  • 4. CCDC Drilling Fluid Technical Service Company, Chengdu, Sichuan 610056;

  • 5. Bohai Drilling Engineering Technology Research Institute, Renqiu, Hebei 062550;

  • 6. School of Petroleum Engineering, China University of Petroleum(East China), Qingdao, Shandong 266580;

  • 7. CNPC Greatwall Drilling Company, Beijing 100011;

  • 8. Southwest Petroleum University, Chengdu, Sichuan 610500;

  • 9. CNOOC China United Coalbed Methane Corporation Jinxi Branch, Luliang, Shanxi 030000

  • Received Date: 2020-03-22
  • Publish Date: 2020-08-28
    Abstract
  • In drilling operation, damage of drilling fluids to reservoir formations with low or ultra-low permeability is higher than the damage of the drilling fluids to reservoir formations with medium or high permeability. Some reservoir specialists have long thought that low- or ultra-low permeability reservoirs that need to be fractured before being put into production do not need reservoir protection measures during drilling operation because fracturing job can eliminate the negative effect of drilling fluids to the reservoir formations. This opinion has badly affected the productivity of oil and gas wells. This paper explains the particularity of the damage mechanisms of low- and ultra-low permeability reservoirs and the severity of the damage. It proves that, using the field production data, excellent reservoir protection drilling fluid technology is helpful to the great enhancement of the daily production rate of a well after being fractured. This paper also elaborates the development direction and trend of reservoir protection based on the international trend and the strategic requirements of the development of China's oil and gas industry. The ideas described in this paper are of not only applicable value to the enhancement of reservoir protection efficiency, the daily production rate of a single well and the overall economic benefit of a whole oilfield, they also have certain guiding significance to the development of drilling fluid technology and the establishment of Chinese-style “shale-gas revolution”.

     

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