Bottleneck Elevator
The bottleneck elevator contains two series which are DDZ and DDZ TD, and DDZ is a center latch elevator while DDZ TD is atop drive elevator with center latch. Despite of their differences, these two series are both applicable for 18 degree taper shoulder drill pipes, so they are also referred to as 18 degree center latch elevator.
Feature
1. This oil drilling tool is very useful for top drive system in oil and gas drilling. It helps to suspend taper drill pipes in a reliable and convenient way during tripping operation, and it also prolongs the service life of blow out preventer.
2. Our bottleneck elevator is compliant with API Spec 8C, and it is tested at 2 times the maximum load to make sure it is durable enough for long-term use. Moreover, it is also tested at 1.5 times the rated load before delivery.
Technical Data of Bottleneck Elevator| Model | Applicable drill pipe (inch) | Bore diameter (mm) | Elevator mark | Max. load (ton/kN) |
| 23/8 EU | 67 | 23/8 EU | DDZ: 150/1350 250/2250 350/3150 500/4500 DDZ TD: 350/3150 500/4500 | |
| 27/8 EU | 83 | 27/8 EU | ||
| 31/2 EU | 101 | 31/2 EU | ||
| 4 IU | 109 | 4 IU | ||
| 4 EU | 121 | 4 EU | ||
| 41/2 IU | 41/2 IU | |||
| 41/2 IEU | 41/2 IEU | |||
| 41/2 EU | 133 | 41/2 EU | ||
| 5 IEU | 5 IEU | |||
| 51/2 IEU | 148 | 51/2 IEU | ||
| 57/8 IEU | 159 | 57/8 IEU | ||
| 65/8 IEU | 179 | 65/8 IEU |
