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Mud Technology for Guan H-1 Horizontal Well

Zong Ruiguo , Dagang Petroleum Administration ; Yan Jienian ; and Jiang Guancheng , Development Department , the University of Petroleum , East China , Dongying City , Shandong Province  
Guan H - 1 horizontal well is the first medium radius horizontal well of Dagang oil field , with the depth of 2348 meters and extended section of 209 meters . Three types of am-photeric polymer fluids are adopted in various formation , including inhibitive , potassium based , and temporary plugging completion fluid . Tests at both laboratory and wellsite indicate that these fluids have the advantage of good inhibity , lubricity . and anti-caving property , they can satisfy the demand of drilling operation .
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