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Drilling Technical Problems and Countermeasures of Oil and Gas Geological Survey Well

ZHANG De-long;WENG Wei;HUANG Yu-wen;ZHU Wen-jian;GUO Qiang;Beijing Institute of Exploration Engineering;  
Oil and gas resources survey is one of the important contents of the 13 th Five-Year Plan in China. 54 oil and gas geological survey wells were implemented by China Geological Survey in 2016,and 36 wells deployed in 2017,mechanical core drilling technology is mostly used. Based on the characteristics of oil and gas geological survey wells and mechanical core drilling technology,this paper summarizes and analyzes the technical difficulties of oil and gas geological survey wells drilling in the aspects of formation characteristics,well control,cementing,logging and downhole complex conditions,and puts forward targeted solutions. The research results of this paper can provide technical reference for the related managers and operators,and provide experience for the research and development of drilling technology oil and gas geological survey wells.
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