An in-pipe docking type cable-controlled separate mining process

Abstract

The invention belongs to the technical field of cable-controlled intelligent mining of oil wells, and discloses an in-pipe butt-connected cable-controlled separate extraction process. The process is realized through two trips of pipe strings. The upper part of the production string is connected to the circuit, and the production is regulated at the same time. The present invention can realize the fast run-in and docking of the signal cable in the pipe string, avoid cutting the cable multiple times during the run-in process of the pipe string and then make the cable joint, and improve the efficiency of the separate mining operation; and the signal cable is built into the pipe string to go into the well , to avoid the risk of extrusion and collision between the cable and the well wall during the running of the pipe string, and effectively improve the operation success rate of the oil well cable control smart well technology and the life of the cable data transmission.

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

Images