Description
The variety of internal channels in these blocks enables the complex control of the hydraulic or pneumatic behavior of the system. Among the most important of these systems, we can mention the control of the seven main functions of the drilling top drive by hydraulic manifolds, which has a very complex structure due to the need for small volume and at the same time high performance. Among the seven drilling functions, we can mention braking, closing the internal blow-out valve in emergency situations, closing the pipe, etc. The hydraulic manifold has the task of converting electrical messages received from the control room into hydraulic commands and can be transferred to the mentioned functions. Meanwhile, the top drive hydraulic manifold of the American company Varco, as the main hydraulic control system of drilling operations, has much more complexities than other types of top drive drilling, the technical knowledge of which is only provided by Asar Sanat Ala Engineering Company through a system research and development process. Mand has been successfully extracted and confirmed after field testing. This controller consists of 280 internal channels, has 23 safety and control valves and 134 connections and test valves, and its working pressure is around 3000 psi.
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