The Overall Shift Device of the Derrick and the Finite Element Calculation
An overall shifting device was designed to move the drill as a whole, avoid the repeated assembly and disassembly of the cluster wells drill. The hydraulic system of the device and the strength of the loaded parts of the system was checked; The earth anchor, the size of the earth anchor was determined and ANSYS analysis were conducted to ensure its supporting function.
Helen Zhang, Gang Shen and David Jin
W. C. Zhang et al., "The Overall Shift Device of the Derrick and the Finite Element Calculation", Advanced Materials Research, Vols. 225-226, pp. 569-572, 2011