In the horizontal section of the well the use of cables and fluid pumps will allow to deliver windowmaker and a bridge plug to the bridge plug sitting place, idnition cable seals the bridge plug, at the same time the bridge plug and a perforating gun are detached. A lifting cable will drag the perforating gun to the preditermined position, then ignition initiates multiple cluster perforation. After pulling the cable out, hydraulic fracturingis performed. By repeating such actions, perforation and fracturing of the whole horizontal section is completed.
1. Composite bridge plug drilling speed:
The main material is high-strength engineering plastic. Upper anchoringmechanism adoptsa tippedstructure, material -c eramics. Lower anchoring mechanism adoptstoothstructure made of Fe-based composite material. Pressure difference - 10000psi, temperature resistance - 350F, plug milling speed - 10-20min per one.
2. Electronic selector:
The test panel can switch the on-off state at the ground inspection, which guarantees normal connection of the perforating gun before entering the well.
While the perforating gun is entering the well, a short circuit, disconnection or electric leakage detection can be performed at any moment, and identified issues can be solved in a timely manner.
At the instant of the ignition the ground system initiates IVcurves, which gives a clear note on whether thedetonatorwas detonated.
In case of unforseen circumstances, it can perform selective perforation function and choose expected gun to fire.
In Daqing oilfields Yuan Ping 1-4, Yuan Ping 1-5 and Yuan Ping 1－8 the team set a record of sealing, perforating and fracturing 5 sections of the bridge plugs in one day.
27 bridge plugs were sealed on the first time meaning 100% success rate; 52 clusters were perforated from the first time meaning 100% rev rate；624 emission holes were made from the first time meaning 100% of emissivity.