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Drill Bit type STX-1
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Specification |
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IADC code |
117 |
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Nominal Size |
4 ¾ï¿½?(120,7 mm) |
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Drill Bit of high performance |
10. pcs |
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Connecting thread |
2 7/8 Reg. |
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Sliding bearing |
Sliding bearing |
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Teeth structure: |
Interior row (radius inverted) |
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End row (Bimetallic) |
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Calibration Row |
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Reinforced teeth: |
Yes |
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Reinforcement on outside diameter: |
Pe fusta falcii |
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Nozzle type: |
15/32" (11,9 mm) |
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Lateral flow arrangement: |
Yes |
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Tightening torques: |
6.1 �?7.5 kNm |
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Approximate weight for loading: |
9.1 KG |
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Press on the dig |
4-10 tones |
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Rotation per minute |
80-300/ rpm |
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KINGDREAM TYPE |
43/4 HA117G (UNIT PRICE:USD 3365.00) |
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Specification |
|
IADC code |
117 |
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Nominal Size |
8 1/2�?(215,9 mm) |
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Drill Bit of high performance |
10. pcs |
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Connecting thread |
4 ½ï¿½?/FONT> |
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Sliding bearing |
Sliding bearing (double seal) |
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Teeth structure: |
Interior row (radius inverted) |
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End row (Bimetallic) |
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Calibration Row |
|
Reinforced teeth: |
Yes |
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Reinforcement on outside diameter: |
Pe fusta falcii |
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Nozzle type: |
14/32" |
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Lateral flow arrangement: |
Yes |
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Press on the dig |
4-20 tones |
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Rotation per minute |
50-300/ rpm |
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KINGDREAM TYPE |
81/2 HA117G (UNIT PRICE:USD2580.00) |
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Specification |
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IADC code |
117 |
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Nominal Size |
9 1/2�?(241,3 mm) |
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Drill Bit of high performance |
2. pcs |
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Connecting thread |
6 5/8"Reg. |
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Sliding bearing |
Sliding bearing (double seal) |
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Teeth structure: |
Interior row (radius inverted) |
|
End row (Bimetallic) |
|
Calibration Row |
|
Reinforced teeth: |
Yes |
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Reinforcement on outside diameter: |
Pe fusta falcii |
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Nozzle type: |
16/32" |
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Lateral flow arrangement: |
Yes |
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Press on the dig |
4-22 tone |
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Rotation per minute |
50-300/ rpm |
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KINGDREAM TYPE |
91/2 HA117G (UNIT PRICE:USD3365.00) |
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Specification |
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IADC code |
115 |
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Nominal Size |
17 1/2"(444,5 mm) |
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Drill Bit of high performance |
1. pcs |
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Connecting thread |
7 5/8"Reg. |
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Sliding bearing |
Sliding bearing (double seal) |
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Teeth structure: |
Interior row (radius inverted) |
|
End row (Bimetallic) |
|
Calibration Row |
|
Reinforced teeth: |
Yes |
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Reinforcement on outside diameter: |
Pe fusta falcii |
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Nozzle type: |
20/32"+central nozzle 18/32" |
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Lateral flow arrangement: |
Yes |
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Press on the dig |
|
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Rotation per minute |
50-350/ rpm |
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KINGDREAM TYPE |
171/2 GA115 G(UNIT PRICE:USD14000.00) |
17 1/2 " GA115G (444.5mm)
Roller bearing and rubber seal
Roller bearing design suitable for high WOB and high RPM is used. Conduct friction reducing treatment and hardening treatment on secondary surface of thrust bearing. Bearing O ring seal adopts high saturation nitrile butadiene rubber(NBR) which can bear high abrasiveness and high temperature, larger seal ring has decreased sealing force, and protruding part on the outside of seal has increased the reliability of sealing.
Head OD enhancement
Adopt teeth layout on head OD to protect the shirttail and seal to effectively improve the bit’s ability to prevent diameter shrinkage.
Hardfacing on shirttail
This feature can provide better protection for seal and bearing to extend the bit’s service life.
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Technical specifications |
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IADC |
1-1-5 |
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Bearing and seal |
Roller bearing and rubber seal |
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Number of rows |
3-2-2 |
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Number of cutters |
74 |
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Main cutter shape / Cutter exposure |
Hardfaced tooth surface�?1mm |
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Gage row cutter shape |
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Layout of diamond enhanced inserts |
/ |
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Type of nozzle |
S5 |
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Type of center nozzle |
Yes |
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Shank |
7 5/8 REG |
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Recommended makeup torque |
46.1~54.2 (KN.m) |
Recommended operating parameters
WOB: 111~311(KN)
Ideal WOB range:150~280(KN)
Rotary speed: 80~200 (rpm)
Ideal rotary speed range:100~160(rpm)
The above parameters are only for reference. Optimized parameters are determined by drilling process and lithology of formations on site.
Applicable formations
Very soft with low compressive strength and high drillability, such as soft shale, clay and salt bed, etc.
8 1/2" HA117G (215.9mm)
“O�?ring sealed journal bearing
Journal bearing structure with head bearing hardfaced and cone bearing silver plated to improve load
capacity and anti-galling ability of the bearing. More wear and high-temperature resistant highly saturated Buna-N rubber “O�?ring is used to improve reliability. Larger “O�?ring section reduces pressure on the seal,and the boss at outer end of the seal is also helpful for reliability of the seal.
Head OD reinforcement
Head OD are designed with carbide inserts to protect the shirttail and seal to effectively improve the bit’s ability to prevent diameter shrinkage.
Hardfacing on shirttail
This feature can provide better protection for seal and bearing to extend the bit’s service life.
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Technical specifications |
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IADC |
1-1-7 |
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Bearing and seal |
Ball and Journal bearing O-ring |
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Number of rows |
3-2-2 |
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Number of cutters |
98 |
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Main cutter shape / Cutter exposure |
Hardfaced tooth surface |
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Gage row cutter shape |
|
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Layout of diamond enhanced inserts |
/ |
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Type of nozzle |
S4 |
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Type of center nozzle |
Yes |
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Shank |
4 1/2 REG |
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Recommended makeup torque |
16.3~21.7 (KN.m) |
Recommended operating parameters
WOB:70~ 190(KN)
Ideal WOB range:80~150(KN)
Rotary speed: 80~150 (rpm)
Ideal Rotary speed range:90~120(rpm)
The above parameters are only for reference. Optimized parameters are determined by drilling process and lithology of formations on site.
Applicable formations:
Very soft with low compressive strength and high drillability, such as soft shale, clay and salt bed, etc.
4 3/4 " HA117 (120.65mm)
“O�?ring sealed journal bearing
Journal bearing structure with head bearing hardfaced and cone bearing silver plated to improve load
capacity and anti-galling ability of the bearing. More wear and high-temperature resistant highly saturated Buna-N rubber “O�?ring is used to improve reliability. Larger “O�?ring section reduces pressure on the seal,and the boss at outer end of the seal is also helpful for reliability of the seal.
Head OD reinforcement
Head OD are designed with carbide inserts to protect the shirttail and seal to effectively improve the bit’s ability to prevent diameter shrinkage.
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Technical specifications |
|
IADC |
1-1-7 |
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Bearing and seal |
“O�?ring sealed journal bearing |
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Offset |
1/8�?/FONT> |
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Number of rows |
3-2-2 |
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Number of cutters |
98 |
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Main cutter shape / Cutter exposure |
Hardfaced tooth surface |
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Gage row cutter shape |
|
|
Layout of diamond enhanced inserts |
/ |
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Type of nozzle |
S1 |
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Type of center nozzle |
None |
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Shank |
2 7/8 REG |
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Recommended makeup torque |
8.1~9.5 (KN.m) |
Recommended operating parameters
WOB: 35~105(KN)
Ideal WOB range:50~80(KN)
Rotary speed: 120~60 (rpm)
Ideal Rotary speed range:100~80(rpm)
The above parameters are only for reference. Optimized parameters are determined by drilling process and lithology of formations on site.
Applicable formations
Soft to medium soft with low compressive strength or soft with harder stringers, such hard gypsolyte, soft limestone and sandstone, etc .
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