Conventional electric submersible extraction equipment or testing process adopts the way of tubing external cable, which is easy to collide or squeeze the cable with the casing wall, especially in the highly inclined directional well, which is more likely to cause the above problems, resulting in a short service cycle of equipment, limited scope of adaptation, unable to reuse the subsequent cable, high cost, and low operating efficiency.
Cable fishing technology is used to run and draw the cable in the oil pipe to avoid the problem of cable damage. The cable plug has passed the continuous test of high voltage, high temperature, high current and other complex situations. The load power cable has been dropped repeatedly. Process technology has been mature quantitative application.
Cable fishing process can match any submersible oil unit; It can realize seamless connection without changing the structure of the existing submersible unit. At the same time, it can realize a variety of well types such as vertical well, directional well, horizontal well and so on. It can also be optimized internally with the test process and other methods that require tubing external cable to realize the internal fishing of the cable. At the same time, complete sets of equipment and units for non-tubing submersible oil extraction are also being popularized and applied.