Apply Compound Salt Drilling Fluid in Yong559 Drilling Block



In the drilling blocks of shengli oilfield, the application of compound salt drilling fluid is becoming a new normal. Utilize compound salt drilling fluid could make a contribution to reduce the enlargement rate of hole diameter, also resolve the sticky and reaming problems in the upper section of Guantao formation and the wellbore instability problem of Shahejie formation under the condition of wellbore is clean. This paper is going to introduce what is compound salt drilling fluid system and the advantages of this system, and analyze the application of this drilling fluid in Yong559 drilling block. According to the wellbore diameter data, it approves that the compound salt drilling fluid system has a significant effect on reducing the enlargement rate of hole diameter.


Compound salt drilling fluid; Enlargement rate; Wellbore instability

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Pei, J. Z., & Wang, S. Y. (2009). Drilling fluid technology of Shengli Oilfield. Dongying: China University of Petroleum Press, 2009

Yan, J. N. (2009). Drilling fluid technology (1st ed.). Dongying: China University of Petroleum Press.

Qiu, C. Y., Liu, X. M., & Wang, X. S. (2014). Wellbore Stabilizing Drilling Fluid Technology of Dong7 Well. Natural Gas Exploration and Development.



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