Description
IADC 217 2 3/8 Steel Tooth Tricone Bit
Product technical specification
IADC | WOB (KN/mm Bit Dia.) | RPM (r/min) | Applicable Formations |
114 115 | 0.27~0.70 | 200~80 | very soft with low compressive strength and high drillability,such as soft shale,clay and salt bed,etc |
124 125 | 0.25~0.70 | 200~80 | Soft with low compressive strength and high drillability,such as soft shale,clay and salt bed, soft limestoneetc |
134 135 | 0.25~0.70 | 200~80 | Soft to medium soft or soft with harder stringers, such as hard gypsolyte,soft limestone and sandstone etc. |
116 117 | 0.35~0.90 | 150~80 | very soft with low compressive strength and high drillability, such as soft shale,clay and salt bed,etc |
126 127 | 0.35~1.00 | 150~70 | soft with Low compressive strength and high drillability. Such as shale, clay, salt bed and soft limestone etc |
136 137 | 0.35~1.05 | 120~60 | Soft to medium soft with low compressive strength or soft with harder stringers,such as hard gypsolyte,soft limestone and sandstone ,etc. |
216 217 | 0.50~1.20 | 90~50 100~50 | Medium hard with relatively higher compressive strength and hard stringers,such as hard shale,sandstone and limestone.etc |
Note: The upper limits of WOB and RPM in above table should not be used simultaneously | |||
Application
Application for Oilfield, gas well ,water wells, HDD and construction ,foundation drilling etc
Ⅰ. bit selection
1. Please reading lithology. description and bit records of adjacent wells carefully,and analyzing formation characteristics.
2. Selecting appropriate type in accordance with lithology.
Ⅱ. Preparation before drilling
1.Inspect previous bit for body damage, lost cutters or inserts etc. Make sure there are no any junk on bottom hole, and clean the
bottom hole if necessary.
2.Bit must be handled with care in order not no damage cutters and hard substances.
3.Check if there is any damage on bit cutters and if there any foreign matter inside the bit.
4.Check if installing nozzle is meet requirements, and replace nozzles if necessary.
Ⅲ. Marking up the bit
1.Clean bit threads and apply grease on threads.
2.Fit the breaker to the bit, lower the drill string onto the pin and engage the threads.
3.Locate the bit and breaker in the rotary bushing, and make-up the bit to be recommended torque.
Ⅰ. bit selection
1. Please reading lithology. description and bit records of adjacent wells carefully,and analyzing formation characteristics.
2. Selecting appropriate type in accordance with lithology.
Ⅱ. Preparation before drilling
1.Inspect previous bit for body damage, lost cutters or inserts etc. Make sure there are no any junk on bottom hole, and clean the
bottom hole if necessary.
2.Bit must be handled with care in order not no damage cutters and hard substances.
3.Check if there is any damage on bit cutters and if there any foreign matter inside the bit.
4.Check if installing nozzle is meet requirements, and replace nozzles if necessary.
Ⅲ. Marking up the bit
1.Clean bit threads and apply grease on threads.
2.Fit the breaker to the bit, lower the drill string onto the pin and engage the threads.
3.Locate the bit and breaker in the rotary bushing, and make-up the bit to be recommended torque.
Any inquiry please ask us
Service
- The technical support team may provide remote or on-site support to resolve issues encountered by users during use.
- Provide original spare parts to ensure timely replacement of worn or damaged parts to maintain the normal operation of DTH bits.
- Timely information reply throughout the day, the first time to solve your problems.
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For more information, please contact us:
Email: info@drilling-tools.com
Whatsapp/Phone:+8617638571343
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