It is understood that the Well 13 is an exploration well in the Jidong block of Changqing Oilfield. It was drilled by the 50273 drilling team of the second project department of Changqing Drilling Corporation, and the Drilling Institute of Shengli Engineering Company provided drill bit technical support. The second open construction of the well has difficulties such as long hole length, large friction, multiple layers, and uneven lithology. It poses many challenges for the selection and use of PDC bits. In response to this situation, after detailed analysis of the geological conditions and adjacent well data in the area, the drilling technicians designed a new type of diamond drill bit suitable for the formation and developed a detailed drill construction plan. During the construction, the drilling institute and the construction unit work closely together to strengthen the implementation of various technical measures. The new steel body PDC drill bit is used to successively drill the Yan'an Formation of the Middle Jurassic Jurassic System, the Yanan Formation of the Upper Triassic System, and the Zhongtong Paper Workshop. The group, as well as the lower-level Heshanggou group and the Liujiagou group, achieved a single footage of 2,155 meters and a maximum daily footage of 791 meters. In one fell swoop, the new record of the same well type was opened.
The new steel body PDC bit has been successfully applied in the Well 13 of Changqing Oilfield, fully demonstrating the research and development and individualized design level of the drill bit of Shengli Drilling Institute, providing a powerful technical means for drilling speed in Changqing Oilfield, laying the foundation for the next market development. .
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