Downhole drilling can reach extreme depths, and the heat and vibration involved in downhole drilling pose special challenges for equipment. Reliability can be paramount in this application as downhole drilling often occurs on offshore platforms where access to parts and maintenance is limited.
Belleville disc springs play a crucial role in downhole shock tools, where they are utilized to absorb axial vibrations that stress the tool. A stack of Bellevilles helps to compensate for the adverse conditions of downhole drilling, such as hole depth, drilling weight, bit pressure drops, and mud weights. The stack provides high load carrying capacity and a linear spring rate, creating an optimum combination for each shock tool. Positioning a Belleville stack close to the drill bit provides non-linear recoil to the bit during drilling, resulting in smoother operation and reduced wear on the motor.
Using BelleFlex® Bellevilles can help to increase the rate of penetration (ROP) and support accuracy, efficiency, and reliability in downhole drilling.