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Automated control system for back-reaming

A technology of control system and hoisting system, which is applied in the fields of drilling automatic control system, drilling equipment and method, construction, etc., and can solve the problem of drill pipe not moving

Inactive Publication Date: 2006-03-15
VARCO I P INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rig must still monitor hook load, torque and / or riser pressure for indications that the drillpipe may be at risk of becoming pinched in the well
[0006] Also, two problems with these treatments are that many hoist systems do not allow holding the drillpipe in place for an extended period of time, which can happen when the drillpipe becomes clamped in the well

Method used

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  • Automated control system for back-reaming
  • Automated control system for back-reaming
  • Automated control system for back-reaming

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Embodiment Construction

[0016] Such as Figure 1-3 As shown, the present invention relates to a winch / brake control system 110 (hereinafter "control system 110") for use with a winch 50 or similar lifting device during post reaming (hereinafter "reaming") operations automated operation.

[0017] Such as figure 1 As shown, the control system 110 is connected to an operator control unit 115 in one embodiment of the invention. The driller or operator inputs to the control unit 115 the maximum value that can be achieved during the reaming operation for one or more particular reaming parameters. For example, reaming parameters may include some or all of pull on bit (POB), rate of lift (ROH), and drilling torque. Then, the operator starts the hole reaming operation.

[0018] During reaming operations, the control system 100 continuously monitors POB, ROH and / or drilling torque via the various sensors 90, 100 and 104 and compares the measured values ​​to limit or maximum values ​​entered by the operator...

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PUM

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Abstract

A system that controls a back reaming operation of a drilling rig is provided that includes a hoisting system that moves a drill pipe during a back reaming operation at a hoisting speed and a hoisting torque. The hoisting system comprises at least one back reaming parameter sensor for measuring a corresponding at least one back reaming parameter. An operator control unit allows an operator to input a predetermined value of the at least one back reaming parameter therein. A back reaming parameter sensor obtains the measured value of the at least one back reaming parameter. A control system monitors the at least one back reaming parameter. A braking assembly resists the hoisting torque of the drawworks system when the measured value of the at least one back reaming parameter equals the predetermined value of the at least one back reaming parameter.

Description

technical field [0001] The present invention relates to an automatic control system for maneuvering a winch or similar lifting device during back reaming operations. Background technique [0002] In the petroleum industry, the equipment or machines used to drill wells are collectively referred to as drilling rigs or drilling rigs. On these rigs there are means for rotating the drill pipe, the most popular and successful of which is what is known as a top drive system. The popularity and proliferation of top drive systems in the oilfield has greatly enhanced the ability of industrial rigs and operators to handle drill pipe operations in a safe and profitable manner. [0003] One such operation is "post-reaming," in which the operator lifts the drill pipe out of the wellbore while simultaneously pumping out the drilling mud and rotating the drill pipe, thus avoiding friction between the drill pipe and the wellbore, which This friction may cause the drill pipe to become lodge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B44/04E21BE21B19/00E21B19/02E21B19/08E21B44/00E21B44/02
CPCE21B19/08E21B19/008E21B19/02E21B44/04E21B44/02E21B44/00E21B19/084
Inventor 布鲁斯·普赖尔迈克·波尔谢
Owner VARCO I P INC