Two PDC Drill Bits Good Performance In oilfield

July 27, 2022
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SuZhou Energy Tool Two PDC Drill Bits Good Performance

 

Note: two 8- 1 / 2 ″ bits are used in the fourth spud of tubes 401 well. The first bit has footage of 950m and a machine speed of 3.56m/h. The  second bit has footage of 178m and a machine speed of 3.36m/h. The ROP is higher than other bits, and the wear of both bits is smaller

 

Usage of the first drill
Drill well No.: North Turpan4 01 2019/8/10
Entry number Drill Bit Well section Footage Drill Drill Down Mechanical drilling speed Stroke drilling speed
(m) (h) (h)
dimension Type manufacture No Factory from to       (m/h) (m/h)
         
22 215.9 ST516 SA003 Energy Tool 4193 5143 950 266.85 107.5 3.56 2.45
Stratum and code name: E1-2km Main lithology: Salt rock
Propotion (g/cm3) viscocity(s) 塑粘(mPa.s) Dynamic shear force(Pa) Water loss(ml) Mud Cake Shear force Sand content(%) PH value (PH) Salt content(ppm)
(mm) (10"/10')
2.35 103 69 5.5     3.5/5.5     23000
Weight on bit(KN) Rotating speed(r/min) Displacement(l/s) Pump pressure(MPa) Reaming time Demarcated well section(m)
(h:min)
30 80 19 26 10.5  
Drill Back UP injection Drill cycle impact drill Water horsepower(MPa)Kw Specific water power(W/mm2)
Nozzles Speed speed (m/s) Pressure drop (MPa) pressure drop (KN)
(Z×φ) (m/s)     (MPa)  
5×10 DP:0.79 48 12.63 13.37 2.16 240 6.55
DC:0.79
Description of wear
cutting structure Bearing seal Diameter others Reason for tripping
Passivation
Inner row of teeth Outer row of teeth Passivation characteristics position characteristics
   
I O D L B G O R
    WT S   I NO BHA

Drill tool assembly
215.90mmRV505SPDC drill bit×0.35m+168.00mm430*NC46 female adapter×0.61m+167.00mm6 1/4" check valve×0.50m+158.80mm6 1/4” spiral drill collar×17.75m+215.90mm8 1/2” Screw stabilizer×1.48m+127.00mmNC46*410 conversion connector×0.70m+127.00mmNC50 conversion connector×0.39m+158.00mmMWD non-magnetic drill collar×9.24m+158.00mm411*410 conversion connector×0.80m+127.00mm411*NC46 female Adapter×0.70m+215.90mm8 1/2″ spiral stabilizer×1.31m+158.00mm6 1/4″ auger drill collar×144.78m+168.00mmNC46 male*410 adapter×0.50m+127.00mm S135I slope weighted drill pipe× 141.85m+178.00mm411*NC52T adapter×0.50m+127.00mm S135I slope drill pipe×4821.54m
Remark Wear characteristics: cutting teeth wear. Wear location: shoulder. Diameter: No wear on the diameter. Other features: no wear features. Reason for tripping: the bottom hole assembly changed.

 

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Usage of the Second drill
Drill Well NO : North Turpan 401 2019/8/16
Entry NO. Drill Bit well Section Footage Drill Drill Down Mechanical drilling speed Stroke drilling speed
(m) (h) (h)
size Type manufacture No. factory from to       (m/h) (m/h)
         
23 215.9 ST516 SA004 Energy Tool 5143 5321 178 52.98 61 3.36 1.46
Stratum and code name: E1-2km Main lithology: Salt rock
propotion(g/cm3) viscocity(秒) 塑粘(mPa.s) Dynamic shear force (Pa) Water loss (ml) Mud Cake Shear force Sand content(%) PH value (PH) Salt content (ppm)
(mm) (10"/10')
2.35 102 71 6     4月6日     23500
Weight on bit(KN) Rotating speed (r/min) displacement(l/s) Pump pressure(MPa) Reaming time Demarcated well sectio(m)
(h:min)
50 85 17 27 0  
drill Back UP injection Drill cycle impact drill Water Specific water power( W/mm2)
nozzles speed speed (m/s) Pressure drop (MPa) pressure drop (KN) horsepower (MPa)Kw
(Z×φ) (m/s)   (MPa)    
3×10+2×12 DP:0.71 37 15.52 11.48 1.47 264 7.21
DC:0.71
Description of wear
cutting structure Bearing seal Diameter others  
Passivation Reason for tripping
Inner row of teeth Outer row of teeth Passivation characteristics position characteristics  
   
I O D L B G O R
    WT S   I NO BHA
Drill tool assembly 215.90mmrv505spdc bit × 0.35m + 160.00mm Power-V spare drawing × 4.05M + 168.00mm 411 * nc46 adapter × 0.67M + 215.90mm8 1 / 2 stabilizer × 1.44M + 127.00mm nc46 * 410 adapter × 0.70M + 127.00mm NC50 adapter × 0.26M + 158.00mm MWD non magnetic drill collar × 9.35m + 158.00mm 411 * 410 adapter × 0.81M + 127.00mm 5 "check valve × 0.50m + 127.00mm 411 * nc46 female adapter × 0.66M + 158.00mm 6" 1 / 4 spiral drill collar × 81.94m + 168.00mm nc46 * nc46 adapter × 0.52M + 127.00mm s135i slope weighted drill pipe × 141.85m + 178.00mm 411 * nc52t adapter × 0.50m + 127.00mm s135i slope drill pipe × 5077.40m
Remark Wear characteristics: cutting teeth wear. Wear location: shoulder. Diameter: No wear on the diameter. Other features: no wear features. Reason for tripping: the bottom hole assembly changed.

 

 

The PDC drill bit condition photos as below which is out of drilling well 

 

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