A Power Compensation Method for Electric Workover Rig

An electric workover rig and power calculation technology, applied in electric vehicles, current collectors, electrical components, etc., can solve the problems of difficulty in determining the power of the super capacitor group and the connection method within the group, and no power calculation and distribution method is proposed.

Inactive Publication Date: 2019-10-25
JILIN UNIV
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Problems solved by technology

[0003] At present, the existing scheme technology has made a detailed description of the power-compensated electric workover rig, including structural design and control methods, etc., but no specific power calculation and distribution method has been proposed, and it is difficult to determine the power of the super capacitor group and the connection within the group Way

Method used

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  • A Power Compensation Method for Electric Workover Rig
  • A Power Compensation Method for Electric Workover Rig
  • A Power Compensation Method for Electric Workover Rig

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Embodiment Construction

[0068] The present invention will be further described below in conjunction with accompanying drawing:

[0069] 1) Set the target working condition requirements of the workover rig, analyze and determine the relevant parameters

[0070] see image 3 , the single-cycle operation of the workover rig can be divided into four stages, namely, the acceleration stage, the constant speed stage, the deceleration stage, and the pipe unloading maintenance stage. Power acceleration, according to the formula (2) to calculate the required power, get At the same time, in order to ensure work efficiency, the extubation time should be less than 20-40s. Therefore,

[0071] see figure 2 , according to the formulas (3) and (4), it can be known that the torque required by the drawworks to lift the well pipe is Among them, T M is the required torque in the acceleration stage, and Te is the required torque in the constant speed stage. At the same time, due to the heavy weight of the well ...

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Abstract

The invention discloses an electric workover rig operating system power calculation and distribution method applying a supercapacitor set, and belongs to the field of electric workover rigs. The method comprises the following steps of 1, analyzing operating conditions, wherein the requirements for required power, required torque, lifting speed and other related parameters are determined through analysis; 2, calculating working power, wherein an operating system is divided into a power part and a transmission part, and the working efficiency of the whole operating system is calculated according to the efficiency of each key device; 3, obtaining input power, wherein according to the requirement for the operating conditions, on the basis of the working efficiency of the system, the input power of the system is obtained reversely, and the power of the supercapacitor set is calculated according to an allocation principle; 4, determining a connecting mode, wherein characteristics of the supercapacitor set are analyzed, and the number of supercapacitors in the set and the connecting mode are determined according to consideration of limiting conditions and safety.

Description

technical field [0001] The invention mainly relates to a power distribution calculation method of an electric workover rig, in particular to a power calculation and distribution method of an electric workover rig operating system using a supercapacitor group. Background technique [0002] In order to achieve energy saving and environmental protection, the operation system of electric workover rigs uses electric power instead of diesel engines to supply energy. However, at present, the power of most oilfield site grids is about 30kW-50kW, which is relatively low. If only the site grid power is used as the power source, it will cause great Restrict the working capacity of the workover rig. To solve this problem, energy storage devices, such as supercapacitor banks and hydraulic accumulators, are often connected in parallel in the system to realize power compensation and increase the power of the workover rig operating system. [0003] At present, the existing scheme technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/34
CPCH02J7/345
Inventor 王继新徐宁蔡云光韩云武周君刘颖毅白雪
Owner JILIN UNIV
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