In-pipe butt joint type cable control separate mining process

Abstract

The invention belongs to the technical field of oil well cable control intelligent mining, and discloses an in-pipe butt joint type cable control separate mining process. The process is achieved through two pipe columns and comprises the steps of: firstly, a lower layer pipe column is put down to separate oil layers; after releasing is conducted, the lower layer pipe column is put down to an upperproduction pipe column to conduct circuit butt joint; and meanwhile production is regulated and controlled. According to the invention, rapid tripping-in and butt joint of a signal cable in a pipe column can be realized; the cable joint is prevented from being made after the cable is cut off for multiple times in the pipe column tripping-in process; and the separated mining operation efficiency is improved; and the signal cable is arranged in the pipe column to descend the well, so that the risks of extrusion, collision and the like of the cable and the well wall in the descending process ofthe pipe column are avoided, and the operation success rate and the cable data transmission service life of the oil well cable control intelligent well technology are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of cable-controlled intelligent mining of oil wells, and in particular relates to an in-pipe butt-connected cable-controlled separate mining process. Background technique [0002] With the continuous innovation of oil well development technology, oil well production is becoming increasingly automated and intelligent, and downhole cable control technology is becoming more and more mature and widely used. For example, the Chinese invention patent with the notification number CN102979487A discloses the "Horizontal Well Preset Cable Water Control Technology". The production increasing device achieves the purpose of water control. Another example is the Chinese invention patent with the notification number CN104343405A, which discloses the "repeated butt joint process for downhole circuits in oil fields". The trip string realizes the electrical signal connection through the cable docking technology, and realize...

AI Technical Summary

Problems solved by technology

As shown in the above process, when the signal cables of the existing cable-controlled intelligent oil production technology are run in with the pipe string, the cables are all placed outside the pipe string, and the disturbance, twisting, and adhesion of the pipe string during the downhole process may damage or even cut off the cable , if the cable is damaged, the high temperature and corrosive environment underground will accelerate the damage of the cable and seriously affect the service life of the cable

If there is a breakpoint in the cable, the electrical signal will not be transmitted, the downhole tool will lose power and cannot work, and the entire string must be pulled out and rerun

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