How to reduce working fatigue of coiled tubing Introduction During operation, fatigue of the tubing string is the main reason affecting the service life of the coiled tubing. This article discusses methods for controlling pipe string fatigue from aspects such as improving construction methods, configuring equipment reasonably, and tracking product usage, in order to extend […]

Coiled Tubing Applications of Drilling Introduction Coiled tubing drilling (CTD) has developed rapidly since its first operation in 1992. The main motivation for coiled tubing drilling is the presence of large-diameter CT, which makes it easier to deliver hydraulic horsepower underground. This horsepower is essential for wellbore cleaning, transporting rock cuttings in the annulus, and […]

Introduction of casing design as a drill string General Introduction Casing is a common petroleum equipment widely used in oil transportation and drilling operations .The use of casing and casing liners for drilling is a convention. Many years ago, it was customary in some shallow fields to attach a drill bit to a small-diameter production […]