Use of MPD on Mandarin eHPHT Well - Presented by Sigve Krohn Naesheim, BG Norge WE Team Leader.
HPHT Conference London Nov, 2011“Use of MPD on Mandarin eHPHT Well” November 15th, 2011 Sigve Krohn Naesheim BG Norge WE Team Leader
Where Mandarin Fits into the Regional NS HTHP Environment 2
Mandarin Regional Location North Elgin/Franklin Jackdaw Jade MandarinJasmine Judy/Joanne UK Norway 3
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 MagmatecOverview 4
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 5