DC Drilling Control System with Energy Balance

An electronic control system and drilling rig technology, which is applied to the automatic control system of drilling, drilling equipment, earthwork drilling and production, etc., can solve problems such as energy waste, achieve the effects of reducing fuel consumption, reducing drilling costs, and improving output power characteristics

Active Publication Date: 2016-08-17
BAOJI PETROLEUM MASCH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a DC drilling rig electric control system with energy balance to solve the problem of serious energy waste in the drilling rig drive system under the existing technical conditions

Method used

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  • DC Drilling Control System with Energy Balance
  • DC Drilling Control System with Energy Balance

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] The structure of the device of the present invention comprises a strong electric part and a control part,

[0021] refer to figure 1 , the solid line connection is the strong current part, and its structure is: the input terminal of the grid-connected cabinet of the generator set is connected to the generator set-3, the output terminal of the grid-connected cabinet of the generator set is directly connected to the AC busbar, and the AC busbar is provided with The following four connection lines,

[0022] The AC busbar is connected to the reversible frequency converter 9 through the transformer 8, and the reversible frequency converter 9 is connected to the automatic drilling motor 10;

[0023] The second AC busbar is directly connected to the top drive inverter 28, and the top drive inverter 28 is then connected to the top drive moto...

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Abstract

The invention discloses a direct-current drill rig electric control system with a function of energy balance. A strong current portion is characterized in that a generating set is connected with alternating current busbars through generating set paralleling cabinets, the alternating current busbars are connected with a reversible frequency converter through a transformer, the reversible frequency converter is connected with an automatic feed motor, the second alternating current busbar is connected with a top drive motor through a top drive frequency converter, the third alternating current busbar is respectively connected with a winch motor, a slurry pump motor and a rotating-disk motor through three SCR speed regulation sets, the fourth alternating current busbar is connected with a reversible filter, and the reversible filter is connected with an energy accumulator, a circuit break controller and a power supply switching control cabinet at the same time. A control portion is characterized in that a drill rig drive control mechanism is respectively connected with two SCR speed regulation sets, the top drive frequency converter and the reversible frequency converter, and an energy recovery control mechanism is connected with the generating set paralleling cabinets, the reversible filter, the energy accumulator, the circuit break controller and the power supply switching control cabinet. The direct-current drill rig electric control system has the advantages that energy recovery and utilization is achieved.

Description

technical field [0001] The invention belongs to the technical field of electric drive and electric power electronics, and relates to an electric control system of a DC drilling machine with energy balance. Background technique [0002] As the main equipment for the exploration and development of deep formation energy such as oil, natural gas, and geothermal energy, the drilling rig will repeatedly lift and lower the drilling tools during the working process. During the lifting process, the drilling rig must do work to lift hundreds of tons of drilling tools by nearly three Ten meters, the mechanical energy transformed by lifting must be released during the descent. At present, the DC drilling rig mainly realizes the slow release of energy through the following methods: 1) Braking for braking, which directly converts mechanical energy into thermal energy for release; 2) Converts mechanical energy into electrical energy through electromagnetic eddy current braking, and then co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B44/00
Inventor 梁春平于兴军宋志刚郭军光吴阳
Owner BAOJI PETROLEUM MASCH CO LTD
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