Directional drilling (or slant drilling) is the practice of drilling non-vertical bores. It can be broken down into four main groups: oilfield directional drilling, utility installation directional drilling, directional boring (horizontal directional drilling - HDD), and surface in seam (SIS), which horizontally intersects a vertical bore target to extract coal bed methane.. HistoryMany prerequisites enabled this suite of technologies to become productive. Probably, the first requirement was the realization that , or , do not necessarily need to be vertical. This realization. .
Wells are drilled directionally for several purposes: • Increasing the exposed section length through the reservoir by drilling through the reservoir at an angle.• Drilling into the reservoir w.
[pdf] 
Many accidents on the drill floorwhile pipe tripping involve using tongs. Injuries result from being caught between tongs and being struck by swinging tongs. All tongs should be securely attached and anchored. Tong safety lines should be of sufficient length, preferably allowing a 90° breakout angle between the. .
Ensure that the crew is up to strength and that individuals know the tasks to be carried out. A communication system should be operational between. .
Considerable preparation is required before the trip is commenced. The following are among the most essential actions that should be carried out. .
Having completed the preparations outlined in the previous section, the trip out of the hole can be started. The following procedure is proposed as a guideline: 1. Flow checkthe well with the pumps off to ensure that the well is static. 1. Pump a slug. This enables the pipe to be pulled dry and the hole to be accurately monitored during a trip. 2. . The underground pipe drilling machine, also named horiztontal directional drilling machine, is a piece of equipment specifically designed to drill holes or tunnels underground to install pipelines. It quickly drills holes in the ground by drilling to lay pipes underground.
[pdf] Deepwater Horizon was an ultra-deepwater, dynamically positioned, semi-submersible offshore drilling rig owned by Transocean and operated by the BP company. On 20 April 2010, while drilling in the Gulf of Mexico at the Macondo Prospect, a blowout caused an explosion on the rig that killed 11 crewmen and ignited a fireball visible from 40 miles (64 km) away. The fire was inextinguisha. DesignDeepwater Horizon was a fifth-generation, RBS-8D design (i.e. model type), deepwater, , column-stabilized, semi-submersible , designed to drill wells for oil explorati. .
Deepwater Horizon was built for R&B Falcon (which later became part of ) by in , South Korea. Construction started in December 1998, the was laid on 21 March 200.
[pdf] 
