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1. HPHT Conference London Nov, 2011
“Use of MPD on Mandarin eHPHT Well”
November 15th, 2011
Sigve Krohn Naesheim
BG Norge WE Team Leader

2. Where Mandarin Fits into the Regional NS HTHP
Environment
2

3. Mandarin Regional Location
North
Elgin/Franklin
Jackdaw
Jade
Mandarin
Jasmine
Judy/Joanne
UK Norway
3

4. Mandarin 1/3-12S Overview
• 20” Surface casing set at • Pressure in Kimmeridge
1132m. was 17,500 psi (5560m
• 13 5/8” intermediate MD).
casing weighing 1.3 million • Mud weight from 5560m
lbs set at 4202m. was 2.23 sg/ 18. 6 ppg.
• 9 7/8” x 10 ¾” prod casing • Temperature was appr. 210
weighing 1.65 million lbs deg / 400+ F at TD.
set at 5400m. • FIT at 9 7/8” shoe was 19.5
• 8 ½” Hole drilled to TD at ppg/ 2.33 sg.
5932m. • Open hole FIT in kick
• Mud used in 8 ½” was interval was 19.1 ppg/ 2.29
Magmatec
Overview 4

5. Weatherford RGVI - MPD Layout & Flow Path
Line allows conventional hole fill practise
if required, when RCD bearing installed.
Returns to rig flow line
Line allows the application of SBP
rig mud pump during connection.
7875 RCD
GC Tracer real time gas in
mud detection probe.
Or ability to divert flow to MGS mud
gas content increases.
3” automated choke for
application of SBP. Note identical
back up on opposite leg.
Flow meter for
1. Flow Out
MPD flow path 2. MW Out
3. Temperature
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