Design and Test of Downhole Weight on Bit-Based Autodriller System for Horizontal Well. Issue 1 (April 2021)

• Record Type: Journal Article
• Authors: Wu, Zebing; Zhang, Wenchao; Zhou, Kefei; Zhao, Haichao; Huang, Hai; Wang, Jie
• Is Part Of: Journal of physics. Volume 1894:Issue 1(2021)
• Publication Date: 2021-04
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1894/1/012032
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: During horizontal well drilling, the pressure difference between the downhole weight on bit (DWOB) and the surface weight on bit (SWOB) will affect the service life of the drilling tool and the efficient production of oil and gas fields. An automatic drilling system device based on DWOB is designed. Choose the S7-200 smart PLC with good expansibility, combine the drilling rig automation principle, and use the Smart-700IE-V3 touch screen to design the human-computer interaction interface. Realize the real-time monitoring and prediction of DWOB. A large amount of test data shows that the new system not only has the advantages of the conventional automatic drilling system, but also can reduce or even eliminate the pressure difference between the surface and the bottom of the hole, achieve accurate control of the DWOB, improve bit performance, and reduce drilling costs.