Driller's Platform Integrated Control System

Abstract

The invention relates to an integrated control system for a driller's floor, which includes a control cabinet and a drill floor valve group. The drill floor valve group includes valves one to five. In the high standpipe, valve five is connected to the inlet of valve one and valve two; valves one to five are hydraulically driven valves and are correspondingly controlled by electromagnetic reversing valves one to five; the high and low pipe selection branch includes selection switch two, two of which The gears are respectively connected in series with the coils of relays 3 and 4. The normally open contact of relay 3 is connected in series with the valve opening coil of electromagnetic reversing valve 1, and the valve closing coil of electromagnetic directional valve 2 is connected with the opening coil of electromagnetic directional valve 1. Phase parallel connection; the normally open contact of relay four and the valve closing coil of electromagnetic reversing valve one are connected in series in the valve group control circuit, and the valve opening coil of electromagnetic reversing valve two is connected in parallel with the valve closing coil of electromagnetic reversing valve one. The control system enables the driller to directly control the valve in the driller's room, which greatly improves the work efficiency and safety of work.

Description

technical field [0001] The invention relates to a drilling control system, in particular to an integrated control system for a driller's floor, and belongs to the technical field of drilling control systems. Background technique [0002] During the drilling process, one or more mud pumps spray high-pressure fluid to the bottom of the well through manifolds, gate groups, hoses, drilling tools and drill bit water holes, forming high-pressure fluid to wash the bottom of the well and dislodging the solids in the wellbore. Phase particles are carried out. The fluid drilling fluid participating in the circulation has the following functions: one is to clean the bottom of the well, suspend and carry cuttings, and keep the borehole clean; the other is to balance the formation pressure, stabilize the well wall, and prevent well collapse, blowout, and lost circulation; 1. To help the drill bit break rocks; 4. To transmit power for downhole dynamic drilling tools; 5. To cool the drill...

AI Technical Summary

Problems solved by technology

If the sub-driller enters the high-pressure area to switch the valve under the pressure-suppressed state, the leakage of the valve will pose a threat to the personal safety of the sub-driller, posing a safety hazard

Moreover, it is difficult to open the valve and the opening speed is slow when it is under pressure, which may easily lead to gate erosion

[0007] In order to prevent heavy objects from smashing the screw rod of the valve, there is a valve stem guard outside the screw rod. The valve stem guard protects the screw rod, and at the same time, it also makes it difficult to distinguish the open and closed states of the valve.

If the valve is in a half-open state, it is easy to affect the mud flow, and even cause erosion to the gate

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