Patent
Automatic drilling control system
TLDR
In this paper, an automatic drilling control system is described for a conventional drilling apparatus and rig having a drill line rolled up or fed off the drum during drilling by the engine and extending through a crown block and traveling block to a fixed point providing a dead line.Abstract:
An automatic drilling control system is disclosed for a conventional drilling apparatus and rig having a drill line rolled up or fed off the drum during drilling by the engine and extending through a crown block and traveling block to a fixed point providing a dead line. The crown block and traveling block form a pulley system for supporting a drill pipe during drilling. A weight indicator gauge on the drilling console is hydraulically actuated from a pressure sensor connected to the dead line. A conventional brake drum controls the rate of feed out of the drill line to determine the tension of the dead line. A double-acting, fluid-actuated cylinder and piston connected to the brake handle positively move it to control the brake force on the drum. A three-way electric solenoid valve controls the application of pressurized fluid selectively to the piston in response to a pressure transducer in the hydraulic line from the pressure sensor. This provides a very close control of bit weight and provides greater drilling speed and greater uniformity of drilling operation. The apparatus may be supplemented with controls which operate the brake in response to overspeed of the drum or in response to close approach of the traveling block to the crown block to apply a braking force to stop the apparatus and prevent damage.read more
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Patent
Automated directional drilling apparatus and methods
TL;DR: In this article, a modified drilling path is created to the target location as selected based on the amount of deviation from the planned drilling path, and drilling rig control signals that steer the bottom hole assembly of the drilling system to a target location along the modified path are generated.
Patent
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TL;DR: In this article, a drill string includes interconnected sections of drill pipe, a bottom hole assembly, and a drill bit, which is used to evaluate the mechanical specific energy of a downhole measurement-while-drilling or wireline conveyed instruments.
Patent
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TL;DR: In this article, an automatic drilling system includes a drilling fluid pressure sensor (34), a bit weight sensor (35), a drill string torque sensor (36), and a drillstring RPM sensor (37).
Patent
Automatic drilling system
TL;DR: In this article, an automatic drill bit penetration in high speed coring is achieved by precise control of bit weight and bit speed, and the required speed and weight is input into the system by the operator.
Patent
Measurement while drilling apparatus and method of using the same
Manoj Gopalan,Stephen B. Poe +1 more
TL;DR: In this article, a method and apparatus used to transmit information to the surface from a subsurface location during the process of drilling a bore hole is described, where a pressure pulse generator or "pulser" is coupled to a sensor package, a controller and a battery power source all of which reside inside a short section of drill pipe close to the bit at the bottom of the bore hole being drilled.
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Patent
Drawworks control apparatus
TL;DR: In this paper, a control apparatus for use with a drawworks assembly having a work piece suspended from, and applying tension to, a cable, one end of the cable being wound on a drum, the rotation of which is controlled by a power brake mechanism, the control apparatus comprising a cable tension sensor producing a tension signal proportional to the tension in the cable, a pulse generator producing a pulsed control signal and a brake control applying the tension signal to the power brake in response to the control signal.
Patent
Apparatus for automatically controlling weight-on-bit
TL;DR: In this article, the authors describe an approach for automatically controlling the weight on a rotary drilling bit, including cable drum, drum rotation monitor, deadline sensor, brake for the drum, brake actuator, and brake release.
Patent
Drawworks brake control
TL;DR: In this paper, a pneumatic relay is connected to a ram that operates the brake on a drawworks having cable wound thereon, and a tension gauge detects the tension in the cable which is displayed on a switch gauge.