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Development and Application of a Kind of Chemicalcementing Strong Wall Agent

  • INNOVATIVE TECHNOLOGIES OF OIL AND GAS
  • Published:
Chemistry and Technology of Fuels and Oils Aims and scope

It is an important technical measure to solve the borehole wallinstability in mud shale formation to improve the bearing capacity of borehole wall while drilling through the interaction between drilling fluid and formation. By using the method of functionalization of polymer and introducing functional groups with strong adhesion and cementation properties, a new type of chemical cementing strong wall agent SLGB-1 was developed, forming strong wall drilling fluid technology. The solid wall performance was evaluated by lap shear strength test, core uniaxial compression test and scanning electron microscope analysis. The results show that SLGB-1 adsorbed on the rock surface can improve the shear strength of rock sample in water and enhance the compressive strength of rock sample after soaking, and the performance of SLGB-1 is significantly better than the existing borehole wall stabilizer. The strong solid wall drilling fluid can cement the loose minerals in the micro-pores and micro-cracks of rock samples, effectively consolidate and plug them, so as to enhance the mechanical stability of rock while drilling. Two Wells were field tested with the rigid-wall drilling fluid technology. The test sections were regular in well diameter, and well diameter enlargement rate was low (< 10%), which was significantly lower than that of the offset Wells.

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Acknowledgments

The authors gratefully acknowledge the financial support of the Science and Technology Project of SINOPEC (JP20004, P21077-6), the financial support of the National Nature Science Foundation of China (No.52074018), the financial support of fundamental Research Funds for the Central Universities (buctrc202017).

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Authors and Affiliations

  1. Drilling Fluid Technology Service Center of SINOPEC Shengli Petroleum Engineering Co., Ltd., Dongying, Shandong, China

    Wang Xudong, Guo Baoyu, Li Lei & Zhao Huaizhen

  2. Xinjiang Xinchun Petroleum Development Co., Ltd., SINOPEC, Dongying City, Shandong Province, China

    Lv Jianbo

  3. Beijing University of Chemical Technology, Beijing, China

    Zhang Yang & Sun Tengfei

  4. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, China

    Qiu Zhengsong

Authors
  1. Wang Xudong
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  2. Guo Baoyu
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  3. Lv Jianbo
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  4. Li Lei
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  5. Zhao Huaizhen
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  6. Zhang Yang
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  7. Qiu Zhengsong
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  8. Sun Tengfei
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Corresponding author

Correspondence to Zhang Yang.

Additional information

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 2, pp. 61–65 March– April, 2022.

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Xudong, W., Baoyu, G., Jianbo, L. et al. Development and Application of a Kind of Chemicalcementing Strong Wall Agent. Chem Technol Fuels Oils 58, 349–359 (2022). https://doi.org/10.1007/s10553-022-01391-7

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  • DOI: https://doi.org/10.1007/s10553-022-01391-7

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