PDC Bit Type Optimization Based on Analytical Hierarchy Process

Drilling bit is the most important tool. Its performance directly affects the quality, cost and efficiency of drilling operations. With the development of drilling technology and increasingly fierce competition, High quality, high efficiency and low-cost of the drilling technology is more and more attention. This also makes the drilling equipment getting more sophisticated. When the drilling, selecting the appropriate type of drill bit can raise penetration rate, increase the bit footage and reduce the drilling costs. PDC bit is a new drilling tool which develops along with PDC composite material. In order to increase drilling efficiency and reduce cost during drilling operations, it is necessary to do some research on PDC bit selection. In this paper, according to Analytical Hierarchy Process, the relationships among analyzing target level, principal level of influencing factor and alternative level is built, then the judgment matrices is constructed, and then the optimization model is established. Based on bit database, the model is applied in deep drilling practice in Daqing Oilfield, and bit optimization design in District Anda is taken as an example to analyze the model, finally the optimum PDC bit selecting program is presented.