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Subsea Drilling Techniques

This document discusses subsea drilling procedures from floating vessels. It outlines the steps for positioning the rig and drilling holes of progressively smaller diameter, down to 12 1/4 inches. It also summarizes the major drilling components used, including subsea wellheads, blowout preventer stacks, marine risers, and surface equipment used to control the well during subsea drilling operations.

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Mohamed Ghareeb
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205 views14 pages

Subsea Drilling Techniques

This document discusses subsea drilling procedures from floating vessels. It outlines the steps for positioning the rig and drilling holes of progressively smaller diameter, down to 12 1/4 inches. It also summarizes the major drilling components used, including subsea wellheads, blowout preventer stacks, marine risers, and surface equipment used to control the well during subsea drilling operations.

Uploaded by

Mohamed Ghareeb
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Ch.

14 Subsea Drilling

1
DRILLING FROM A FLOATING
VESSEL

1. Drilling Procedures
2. Well Control
3. Subsea BOP Stacks
4. Major Drilling Components

2
Semi-Submersible
Rig
3
1. OUTLINE OF DRILLING
PROCEDURES
• Positioning the Rig
• Drilling the 36" Hole
• Drilling the 26" Hole
• Drilling the 17 1/2" Hole
• Drilling the 12 1/4" Hole
• Adandonment

4
Subsea
Wellhead

5
Subsea
Wellhead

6
Temporary Guidebase 7
Drilling
36” Hole

8
Running Conductor and PGB
9
Drilling
26” Hole

10
Running 20” Casing and HPWHH
11
Subsea
Wellhead

12
Subsea BOP

13
2. SUMMARY OF MAJOR
DRILLING COMPONENTS
• Subsea Wellheads
• Subsea BOP Stack
• Marine Riser
• Surface Equipment

14

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