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We supply all sizes and configurations of the downhole motor. According to the customer' personalized requirements for the torque, displacement, well temperature and other parameter, we provide specific design products for the market.
■ Unifrom Thickness:
Uniform thickness power section invented by LILIN will extend running life of downhole motor and improve running efficiency of the motor.The characteristics are:
■Good cooling speciality improves the running life of the stator.
■ Working stability is risen by uniform thickness of the rubber.
■ System efficiency is rised up by high pressure bear on single stage.
■ Conglutinant size is increased by rising up the contact between rubber and the metal.
■ Heat-resistant
Elastomer in the stator of anti-resistant power section made by special technics guarantees well-balanced running of stator under 180℃.As a result,the stator can be employed into high temp drilling well and deep drilling well.
■ Corrosion-resistance:
After corrosion spraying to form special coating, the rotor is better corrosion, erosion and abrasion-resistant. And downhole motor is suitable for long time in the corrosive fluid.
When selecting the downhole motor and its combination,you should work out drilling program,fully consider hole size,hole trace,bit type,specification,formation structure and hydraulic calculation.
1. Surface Checking Before Tripping in
1.1 Except lifting the connections between nipple and by-pass valve,other connections on shell of downhole motor shall be coated with locking agent.
1.2 Assembly bit on the handling device,counter clockwise rotate the drive shaft ends only with chain wrench to protect the inside threads from loosening.
1.3 Hoist lifting sub and put downhole motor into turntable and by-pass valve into the center in easy watch position.And then clamp tightly downhole motor with slips,and disassembly lifting sub.
1.4 Check by-pass valve.
1.5 Connect and low down the kelly
1.6 Disassembly kelly and combine the downhole motor in accordance with the program.Connect bent sub,non-magnetic collar and stabilizer,etc separately.If you make deflection with muleshoe,before twisting bent sub into by-pass valve,you should examine deflecting key to ensure muleshoe sitting in normal working position,and align the scale line of connector and bent sub.
2. Trip in the combined downhole motor into borehole
Even though the outside of downhole motor looks simple and it has enough rigidity,it still needs controlling trip-in speed,when drillers are stripping in downhole motor.Otherwise,the downhole motor may be damaged by san bridge,hole shoulder or casing shoe in the hole.When this happens,it is usually required to start pump,slowly to extend the hole for its passing.
3. Start Downhole motor
If downhole motor is located at the hole bottom,you must lift it for 0.3-0.6m.Then start the pump and record the readings of riser pressure.As compared with the calculated pressure value,it is also normal if it is over the pressure of hydraulic calculation.This is caused from lateral drilling.
4. Trip Out
Downhole motor tripping out is similar to the conventional trip-out.By-pass valve is in open position in stripping out.The fluid in string is allowed to be drained into annular space. But downhole motor can not rapidly discharge the fluid by itself.Usually a section of heavy fluid is added into the top of string before stripping out,to press the fluid in the pipe smoothly to drain.
We supply all sizes and configurations of the downhole motor. According to the customer' personalized requirements for the torque, displacement, well temperature and other parameter, we provide specific design products for the market.
■ Unifrom Thickness:
Uniform thickness power section invented by LILIN will extend running life of downhole motor and improve running efficiency of the motor.The characteristics are:
■Good cooling speciality improves the running life of the stator.
■ Working stability is risen by uniform thickness of the rubber.
■ System efficiency is rised up by high pressure bear on single stage.
■ Conglutinant size is increased by rising up the contact between rubber and the metal.
■ Heat-resistant
Elastomer in the stator of anti-resistant power section made by special technics guarantees well-balanced running of stator under 180℃.As a result,the stator can be employed into high temp drilling well and deep drilling well.
■ Corrosion-resistance:
After corrosion spraying to form special coating, the rotor is better corrosion, erosion and abrasion-resistant. And downhole motor is suitable for long time in the corrosive fluid.
When selecting the downhole motor and its combination,you should work out drilling program,fully consider hole size,hole trace,bit type,specification,formation structure and hydraulic calculation.
1. Surface Checking Before Tripping in
1.1 Except lifting the connections between nipple and by-pass valve,other connections on shell of downhole motor shall be coated with locking agent.
1.2 Assembly bit on the handling device,counter clockwise rotate the drive shaft ends only with chain wrench to protect the inside threads from loosening.
1.3 Hoist lifting sub and put downhole motor into turntable and by-pass valve into the center in easy watch position.And then clamp tightly downhole motor with slips,and disassembly lifting sub.
1.4 Check by-pass valve.
1.5 Connect and low down the kelly
1.6 Disassembly kelly and combine the downhole motor in accordance with the program.Connect bent sub,non-magnetic collar and stabilizer,etc separately.If you make deflection with muleshoe,before twisting bent sub into by-pass valve,you should examine deflecting key to ensure muleshoe sitting in normal working position,and align the scale line of connector and bent sub.
2. Trip in the combined downhole motor into borehole
Even though the outside of downhole motor looks simple and it has enough rigidity,it still needs controlling trip-in speed,when drillers are stripping in downhole motor.Otherwise,the downhole motor may be damaged by san bridge,hole shoulder or casing shoe in the hole.When this happens,it is usually required to start pump,slowly to extend the hole for its passing.
3. Start Downhole motor
If downhole motor is located at the hole bottom,you must lift it for 0.3-0.6m.Then start the pump and record the readings of riser pressure.As compared with the calculated pressure value,it is also normal if it is over the pressure of hydraulic calculation.This is caused from lateral drilling.
4. Trip Out
Downhole motor tripping out is similar to the conventional trip-out.By-pass valve is in open position in stripping out.The fluid in string is allowed to be drained into annular space. But downhole motor can not rapidly discharge the fluid by itself.Usually a section of heavy fluid is added into the top of string before stripping out,to press the fluid in the pipe smoothly to drain.
