Research and Applications of Anti-Sloughing Drilling Fluid for the “Double Stone” Layers of the Yanchang Tight Sandstone Gas Field

  • YangyingEmail author
  • Litiantai
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)


Borehole collapse has always been encountered when drilling the Shiqianfeng and Shihezi formations in Yanchang. It was found that the collapses were due to “double layers of stone” which were brittle, strong, porous, and water sensitive, with a high mineral content within their skeleton particles. Water-locking properties and stress sensitivity are potential factors known to induce wall collapse. To resolve this drilling problem in the Yanchang gas field an anti-sloughing drilling fluid system was devised for use in its “double layer of stone”. The system (complex fluid loss—dual inhibition—materialized block) incorporates a multiple cooperative mechanism of drilling fluid to prevent further drilling collapses. The drilling fluid system developed was applied to Yanchang gas field 645, part of the Shiqianfeng group, and resulted in the Shihezi hole enlargement rates reducing from an average of 22.49 and 22.04% to 15 and 12% respectively, with a filtration rate less than or equal to 5 mL, demonstrating that the drilling fluid system had an obvious anti-collapse effect.


Yanchang gas field Shiqianfeng formation Shihezi formation Anti-sloughing drilling fluid system 



Thanks to the Xi’an Shi you University. I would especially like to thank my professor Litiantai for a tireless attitude toward research—your attitude moved me. Thank you for your help and support in my study.


  1. 1.
    Zhao JZ, Fu J, Yao J, Liu X, Wang H, Cao Q, Wang X (2012) Where the Yuan Fang. ordos basin quasi continuous tight sandstone gas reservoir. Acta Pet Sin S1:37–52Google Scholar
  2. 2.
    Bai Y, Zhao J, Cao Q, Ear C (2016) A quasi continuous low permeability and tight sandstone reservoir in the Ordos Basin. Oil Gas Geol 06:811–827Google Scholar
  3. 3.
    Zhengwei J, Xu SS, Dong X, Wang H, Zhang Y, Wu B (2015) Extended field Shiqianfeng group Xiashihezi borehole instability mechanism research. Drill Completion Fluids 01:34–37 + 41 + 99–100Google Scholar
  4. 4.
    Wu MC, Wang H, Yang M, Qiongjie Y (2010) CB5-2 drilling fluid technology. Drill Completion Fluids 01:79–81 + 94Google Scholar
  5. 5.
    Alford SE (1991) North sea field application of an environmentally responsible water-base shale stabilizing system model. SPE/IADC 21936, Mar 1991Google Scholar
  6. 6.
    Li L, Zhu M, Blue Z, Chen Y (2011) Horizontal wells in northern shaanxi yokoyama block fluid technology. Drill Completion Fluids 04:88–90 + 98Google Scholar
  7. 7.
    Ning Y, Cui Y, Xue B, Mao Y (2009) Ordos basin block gas exploratory drilling technology improvement and application. Drill Completion Fluids 02:126–128 + 140Google Scholar
  8. 8.
    Xu J, Zhang, Mei C, Deng H, Liu C (2012) Ordos basin in deep drilling technology complex formation. Drill Completion Fluids 02:24–26 + 29 + 91Google Scholar
  9. 9.
    Tao C, Jin X, Dong H, Li J, Wu X (2011) Sulige gas field full of peach well area 7 horizontal wells deviated and horizontal sections suitable drilling fluid system gas industry, 03:66–69 + 113Google Scholar
  10. 10.
    Li B, Jia J, Zhang J, Chen En L, Zhao H (2012) Flat peach 1 well drilling technology. Drill Completion Fluids 06:79–81 + 92Google Scholar
  11. 11.
    Wang Q, Zhou YC, Tang Y, Zhibo J (2012) Shale wellbore stability factors. Rock Mech Eng 01:171–179Google Scholar
  12. 12.
    Downs JD, van Oort E, Redman DI et al (1993) A new concept in water-based drilling fluids for shales model. SPE 26699, Sept 1993Google Scholar
  13. 13.
    Aston MS, Elliott GP (1994) Water-based glycol drilling muds: shale inhibition mechanisms model. SPE 28818, Oct 1994Google Scholar
  14. 14.
    Bol GM, Wong SW, Davidson CJ et al (1994) Borehole stability in shales model. SPE 24975, June 1994CrossRefGoogle Scholar
  15. 15.
    Jie Y (1999) Borehole instability mechanism and the mechanism of anti-collapse of several new anti-sloughing muds. Oilfield Chem 16(2):179–184Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Xi’an Shiyou UniversityXi’anChina

Personalised recommendations