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Development and application of high-performance compound salt drilling fluid

Journal of Ceramic Processing Research
약어 : J. Ceram. Process. Res.
2023 vol.24, no.5, pp.753 - 761
DOI : 10.36410/jcpr.2023.24.5.753
발행기관 : 한양대학교 청정에너지연구소
연구분야 : 재료공학
Copyright © 한양대학교 청정에너지연구소
Jian Wang 1 ,  Hanxuan Song 2 ,  Jian Guan 3 ,  Hongyu Liu 4

1GWDC Drilling Engineering and Technology Research Institute

2China University of Petroleum

3GWDC Drilling Engineering and Technology Research Institute

4GWDC Drilling Engineering and Technology Research Institute

인용한 논문 수 :   -  
93 회 열람

Due to the characteristics of deep burial, abnormal pressure, high bottom hole temperature, and abundant fractures, the tightoil reservoirs in the Leijia block of Liaohe Oilfield have many complex situations such as lost circulation and electricalresistance encountered, which seriously restricts the development of tight oil and gas resources in Leijia. Safe and efficientdevelopment. To solve this problem, firstly, the mechanism of the wellbore instability of the tight mud shale in the Leijia blockwas studied. Then, the formula of the composite salt base fluid was optimized by using the principle of activity balance, andthe nano-plugging with core-shell structure was developed in a targeted manner. Finally, a high-performance drilling fluidsystem with strong plugging, strong inhibition and strong lubrication was constructed. The temperature resistance of thesystem reaches 150 °C, the primary recovery rate of shale is 97.8%, the permeability is reduced by more than 50%, and HTHP(150 °C) is less than or equal to 8 mL. In the test of Well L77-HX in Leijia block, the accident complexity rate is 0, the successrate of electrical measurement is 100%, the ROP is increased by 40%, the drilling depth is 5000m, and the horizontaldisplacement is 1783m. This new compound salt high-performance drilling fluid system provides technical support.

Hole collapse, New compound salt drilling fluid, Activity balance.

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