Control system applied to drill plug pumping-in

Abstract

The invention discloses a control system applied to a drill plug pumping-in. An electric control device comprises a wellsite power grid, a 1 # pump frequency conversion inverter, a 2 # pump frequencyconversion inverter, a dry adding frequency converter, and a liquid adding frequency converter. The wellsite power grid is used for supplying power to the whole control system. The control device comprises a main CPU. The main CPU is used for receiving external commands, and controlling the 1 # pump frequency conversion inverter and the 2 # pump frequency conversion inverter, so as to control therotation speed of a 1 # pump frequency conversion motor and a 2 # pump frequency conversion motor to realize the control of displacement. The main CPU controls the start / stop and the speed regulationof the dry adding motor and the liquid adding motor by controlling the dry adding frequency converter and the liquid adding frequency converter, so as to realize the control of the adding amount of the dry adding and the liquid adding. According to the control system applied to the drill plug pumping-in, the electric energy can be accessed from the high-voltage power grid; by controlling the motion of motors of the control system, an automatic material adding and proportioning, and an automatic pumping-in are realized; meanwhile, three control modes of the local control box, the electric control room, and the handheld movable device are realized.

Description

technical field [0001] The invention relates to the fields of petroleum machinery and workover and well completion equipment, in particular to an automatic control system for drilling plug pumping. Background technique [0002] For the current mixing system, there are the following problems: the manual addition of chemicals is inaccurate, the operating conditions are harsh, the operation intensity is high, there is a certain amount of environmental pollution, and it is easy to cause waste of manpower and material resources; The system, stirring system, slurry mixing system and injection system are relatively independent and have a low degree of automation, which cannot realize the functions of linkage and coordinated adjustment, continuous mixing and instant mixing and injection. [0003] With the gradual expansion and deepening of the development scale of shale gas, various equipment companies, starting from the convenience and integration of equipment, through the analysis...

AI Technical Summary

Problems solved by technology

[0002] For the current mixing system, there are the following problems: the manual addition of chemicals is inaccurate, the working conditions are harsh, the operation intensity is high, there is a certain amount of environmental pollution, and it is easy to cause waste of manpower and material resources; the liquid mixing and pumping links are separated, and the water supply The system, stirring system, slurry mixing system and injection system are relatively independent and have a low degree of automation, which cannot realize linkage and coordination adjustment, continuous mixing and instant mixing and injection functions

Images