| Drilling, Workover and Production Tools |
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| Learn more |
| TEL:+86-10-63591520 |
| TEL:+86-10-63591500 |
| Email: |
| webmaster@cptdc.cnpc.com.cn |
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| Part 3 Coring Tools | | Coring tools is a special tool to take cores from the formation in hole bottom during coring drilling. | | ● Coring Tools Classifications | | Variety | Model | Application scope | | Chuan-3 model | QX180-105
QX133-70 | | | Conventional | Chuan-4 model | CQX180-105
CQX172-101
CQX133-70
CQX121-60 | Coring in easily forming column formation | | Orientation | DQX180-105
DQX172-101
SDQ133-70 | Coring for collecting conventional data and occurrence elements of rock formation and fracture | | Special | Directional Hole | JQX180-105
JQX172-101
JQX133-70 | Coring in directional, slant and cluster wells | | Outside Vent | WQX180-105
WQX133-70 | Coring in broken formation | | Full Closure | QX180-105 | Coring in broken and unconsolidated formation |
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1. Conventional Coring Tools |
● Conventional Coring Tools Specifications
| | Model | Chuan5-4 CQX121-60 | Chuan6-4 CQX133-70 | Chuan7-4 CQX172-101 | Chuan8-4 CQX180-105 | | Length mm (in) | 18, 400 (724) | 18, 400 (724) | 18, 400 (724) | 18, 400 (724) | | Outer barrel OD× ID mm (in) | 121 × 93
(4.76 × 3.66) | 133 × 101
(5.25 × 4) | 172 × 136
(6.75 × 5.35) | 180 × 144
(7 × 5.67) | | Inner barrel OD× ID mm (in) | 85 × 72
(3.35 × 2.83) | 89 × 76
(3.5 × 3) | 121 × 108
(4.75 × 4.25) | 127 × 112
(5 × 4.41) | | Top thread in | 3-1/2API IF | 3-1/2API IF | 4-1/2API IF | 4-1/2API IF | | Bit size in | 5-7/8-6-1/2 | 5-7/8-6-1/2 | 7-1/2-9-5/8 | 8-1/2-9-5/8 | | Core dia. mm (in) | 66 (2.6) | 70 (2.75) | 101 (4) | 105 (4.13) |
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