Drill pilot holes synchronous dual docking Construction Technology
Using the international advanced double Drill pilot holes sync dock construction
Technology, for the first time successfully implemented unearthed point, buried at both ends Double Diamond
Machine synchronized operation to solve the long hole opener drilling distance through the guide hole in Construction
Drill instability and lack of strength and other problems. Foreign fishing island island through the booklet
Engineering Dual Drill pilot holes sync dock construction technology as follows.
(1) The electromagnetic coil is arranged on the outer island fishing shallow, brochures island side
Rig maintaining low-speed rotation, the use of control to the system will drill to the point unearthed
Drilling approximately 2 200 m, wait and unearthed buried point to point auxiliary rig
Drilling bits for docking.
(2) The special fishing hook mounted on the rig side of the outer fishing island,
Under the guidance of steering systems crossover drilling will salvage hook drilled into the specified location.
(3) foreign fishing island and brochures island keeps rotating rig, fishing hook fishing
After the outer side of the island to catch the drill pipe, drilling rig stopped booklet Island side, the drill bit
Pulling out of the ground. Measuring the deviation is mainly based on two rigs guide
Relative to the measured sensor, the sensor according to the parameters measured, calculated
Azimuth deviation and relative distance between the drill pipe, and gradually adjusted to eliminate bias
Poor, to salvage two drill docking.
(4) designed in accordance with the curve through the external side of the guide hole fishing island
Adjust (i.e. repair hole), thereby completing the construction of the entire guide hole.