IADC 117 Steel Tooth Tricone Rock Bit for Water Well Drilling Rig

 The Advantages of Using a Tri Cone Over Other Drill Bits

Roller steel tooth bit More parameters please click here

Hejian Deris Petroleum Drilling Equipment Co., Ltd Both manufacturer and distributor, specialize ontricone bit include TCI tricone bit ,Steel tooth tricone bit for Water well, Geology , oil, natural gas ,ore drilling engineering ,piling and trenchless , product marketing the country and 20 countries and regions in the world. .Factory sell directly competitive price .

what is the working principle of tricone drill bit

Tricone bits rely on the impact of the cone on the formation, crushing and sliding shear to crush the rock.

Drill bit application instructions 

1 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.

2 Preparation before drilling 

1.Inspect previous bit for body damage, lost cutters or inserts etc. Make sure there are no any junk on 

buttom 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 cuttes and if there any foreign matter inside the bit.

4.Check if installing nozzle is meet requirements, and replace nozzles if necessary.

3 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.

4 Tripping in 

1.Remove the breaker and carefully lower the bit through the wellhead device in order not to damage it.

2.Shrinkage,shoulder,dogleg and key seat of borehole should be cautious when bit through blank hole.

3.Start pump and cycle drilling fluid to wash buttom hole when drill to a point about 30 meters to bottom of the 

hole, and rotate drill string at the low speed not more than 60rpm

4.Approach the bottom approximately half meter. Circulate for 5 to 10 minutes with full flow.

5 Reaming 

1.Reaming long sections of undergauge hole is not recommended.

2.If reaming operation is necessary, it is strongly recommended that the reaming operation should be done 

with maximum flow rate circulation,specific weight on bit not exceed 90N/mm (diameter),rotary speed not 

exceed 60 rpm where stuck was encountered when tripping in.

6 Bit break-in

1.Overusing display instruments when bit approch bottomhole. If the WOB and torque increase,that shows 

bit have attived at bottomhole.Use not more than 90N/mm,weight –on =bit and 40to 60rpm to establish the  bottomhole pattern at least half meter.

2.Bit break-in is finished and should be adjusted RPM to obtain optimal drilling parameter combination.

3.Drilling parameters adjustment should be selected within the limits of the recommended parameters refer 

to recommended drilling parameters optimization method.

Transportation : by sea , by air or land transportation . Less than 50kg shipping by courier better 
Delivery : If we have stock, the delivery time will need about 2~3 working days. In general, common size tricone bits and pdc bit, we have stock.
If we have no stock, such as the tci reamer and pdc hole opener, it will be 7-10 working days in total.

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