{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

9df11f1f7372ec7bffff9031ffffe417

9df11f1f7372ec7bffff9031ffffe417 - Directional Drilling...

Info icon This preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Directional Drilling: deviation from drilling a straight hole. Drilled straight to a predetermined depth, and then gradually curved. Typical curvature: 2-3 degrees per 100’ of well depth Drill stem can handle this low angle curvature enough to eventually run horizontal.
Image of page 2
Uses Offshore Development Drilling on Land Other Uses Tools and Techniques Drill Pipe Bent Sub and Downhole Motor Orienting the Hole
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Offshore: One of the most important uses Capability to drill multiple wells from one location Due to huge expense of constructing a platform, this enables operators to capitalize on a single investment for multiple producing wells Example: Gullfaks C platform in the North Sea Weighs 1.5 million tons Covers 4 acres Cost the US 2 billion to build
Image of page 4
Gullfaks C Platform Typical North Sea Day
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Rig Location on Land Pay Zones Offshore This method is much cheaper and safer than offshore drilling.
Image of page 6
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Directional drilling on land has several uses: Avoiding Fault Lines Can cause problems in the hole Rig Location Rivers, Hills, Mountains and other obstructions Well orientation in the pay zone Operators have increased production by up to 10x due to horizontal well orientation.
Image of page 8
Image of page 9

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Exploration: Directional allows for deflecting off original “dry” holes to intersect possible pay zones. Sidetracking: Divert around a fish (object lodged in the borehole) Well Control: Killing “Wild Wells” Relief Well is drilled directionally to intercept the blown out well in order to kill the well by pumping mud down hole.
Image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}