Horizontal directional crossing are still very young at home and even abroad.
However, in recent years, thanks to the substantial development of pipeline
directional crossing and large-scale construction of domestic oil & gas
pipelines, crossing length and diameter have kept updating the records. Drilling
fluids plays an important role in directional crossing projects for its decisive
impact on the projects’ effects.
Directional crossing projects demand strong drilling fluids performance:
Drilling fluids, fairly important for directional crossing projects, is a
mixture of water, bentonite, additives, etc. with its composition adjustable on
actual requirements in the projects. Complex geology and large crossing diameter
& length demand strong drilling fluids performance, and, correspondingly,
different concoction measures to ensure successful crossing.
1. Drilling fluids should have appropriate viscosity and liquidity and good
ability to carry drill cuttings. In this way, it can stay suspended at the
bottom of borehole and its liquidity can easily carry cuttings back to the
ground.
2. Drilling fluids should be able to well protect the inner walls and better
stabilize the drill hole wall, especially so for those formations of
large-hole-diameter and easy-to-collapse.
3. Drilling fluids should be highly lubricative so as to well smooth drag of
pipelines. It is especially effective in longer crossing projects that
lubrication grease can reduce friction coefficient and back dragging force of
pipelines.
4. In order to satisfy the requirements in crossing projects, the fluids
pressure and flow should be adjusted from formation to formation and from phase
to phase.
Related drilling fluids processing equipment: decanter
centrifuge, shale
shaker, mud
cleaner
2015年8月24日星期一
Desilter according to the principle of particle sedimentation
Desilter
is designed according to the principle of particle sedimentation. The separation
medium drilling fluid passes through sand pump and gets certain pressure and
velocity, flows into spirally along the cyclone inner wall.
Maintenance & repair methods of desilter:
1. The shaker screen box must be removed and the bolt must be locked after the first time use of new desilter or before the first use after moving.
2. When stopped using for a long time, please clean cyclone with clear water circularly, preventing dry sand piling up inside the cyclone.
3. Vibration motor note a grease each 1500 ~ 2500 hours, and oil quantity is 5 ~ 10 ml for each bearing.
4. Shaker screens should be cleaned after downtime, lest sediment dry solid, and desilter cannot be used next time. KOSUN desilter has very good performance and get good complimentary from our clients all over the world. The most common cone is 4” or 5”, mainly to separate the solids in 15-47μm out from the drilling fluids.
Maintenance & repair methods of desilter:
1. The shaker screen box must be removed and the bolt must be locked after the first time use of new desilter or before the first use after moving.
2. When stopped using for a long time, please clean cyclone with clear water circularly, preventing dry sand piling up inside the cyclone.
3. Vibration motor note a grease each 1500 ~ 2500 hours, and oil quantity is 5 ~ 10 ml for each bearing.
4. Shaker screens should be cleaned after downtime, lest sediment dry solid, and desilter cannot be used next time. KOSUN desilter has very good performance and get good complimentary from our clients all over the world. The most common cone is 4” or 5”, mainly to separate the solids in 15-47μm out from the drilling fluids.
Mud agitator throughout the solids control system
Mud
agitator combines compact design with high torque performance levels
necessary for a uniformly suspended flow of drilled solids throughout the solids
control system.
Mud agitator requirements as follows:
1.low profile design to allow for positioning mud conditioning equipment over mud tank.
2.Maximum height above tank is 16 inch.
3.Light weighted , but sturdy construction with the highest torque rating in the industry. Example 15 hp PIT VIPER weighs 542 lbs (246.4 kg ) compared to industry average of 1830 lbs (831.8 kg ) for competitive units.
4.Available in 3,5,7 1/2 , 10 , 15 , 20, 25 and 30 hp models.
5.Oversized shaft bearings are used for longer gearbox life and lower maintenance requirements .
6.Cast iron housings are one-piece , reinforced and ribbed for exra strengh.
7.Detachable impeller shaft for ease of servicing without disassembling unit.
8.Simple mounting .Agitator base rests on tanks structural cross beams held by six bolts.
9.Electric motors : Class 1 ,Group D .Class 11 , Groups F&Gexplosion-proof electric motors are available in 50 or 60 Hz .
10.All internal shafts are heated treated and ground for high loading capacity.No grease fittings.
11.All internal TMLL bearing run in oil.
Mud agitator requirements as follows:
1.low profile design to allow for positioning mud conditioning equipment over mud tank.
2.Maximum height above tank is 16 inch.
3.Light weighted , but sturdy construction with the highest torque rating in the industry. Example 15 hp PIT VIPER weighs 542 lbs (246.4 kg ) compared to industry average of 1830 lbs (831.8 kg ) for competitive units.
4.Available in 3,5,7 1/2 , 10 , 15 , 20, 25 and 30 hp models.
5.Oversized shaft bearings are used for longer gearbox life and lower maintenance requirements .
6.Cast iron housings are one-piece , reinforced and ribbed for exra strengh.
7.Detachable impeller shaft for ease of servicing without disassembling unit.
8.Simple mounting .Agitator base rests on tanks structural cross beams held by six bolts.
9.Electric motors : Class 1 ,Group D .Class 11 , Groups F&Gexplosion-proof electric motors are available in 50 or 60 Hz .
10.All internal shafts are heated treated and ground for high loading capacity.No grease fittings.
11.All internal TMLL bearing run in oil.
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