Gate Valve Drilling & Hot Tap Case Histories

Size: px

Start display at page:

Download "Gate Valve Drilling & Hot Tap Case Histories"

Laureen Blair
5 years ago
Views:

1 Date; 8/9/10 Well; Leko 7 Mill Type; Alert / Conoco Gate Size; 2 1/16 Sumatra Indonesia 2 Bull nose junk mill 450psi on the annulus while well flowed to the flare pit 20 minutes Mill through casing valves so well kill operations could be performed on blow out. 1

2 Date; 22/9/10 Alert / Conoco Sumatra Indonesia Well; South Rawa 1 Mill Type; Gate Size; 2 9/16 2 7/16 Flat nose junk mill 1200psi 45minutes Mill broken lower master valve so plugs could be set and tree valve replaced repaired. 2

Date; 15/1/11 Well; Mill Type; Energean Kavala Greece PB-16A 3 Bull nose Gate Size; 3 1/16 1500psi & 63% H2s 2 hr

3 Date; 15/1/11 Well; Mill Type; Energean Kavala Greece PB-16A 3 Bull nose Gate Size; 3 1/ psi & 63% H2s 2 hr 15minutes Mill broken lower master valve (dual tree long string) so plugs could be set and tree valve replaced repaired. 3

Date; 15/6/11 Well; Shell BSP Brunei N/a Mill Type; Internal tubing cutter 3 Gate Size; N/a N/a 20minutes to cut tubing. Perform trial tubing cut on 3 ½ tubing.

4 Date; 15/6/11 Well; Shell BSP Brunei N/a Mill Type; Internal tubing cutter 3 Gate Size; N/a N/a 20minutes to cut tubing. Perform trial tubing cut on 3 ½ tubing. To prove feasibility of cut so tree and well head can be replaced in one lift. Tree & Well heads in poor state and none repairable. Cameron well heads delivered in 2013 Q1 for well S462 & S773. GVD Unit scheduled for return March

5 Date; 22/04/13 Alert / Shell BSP Brunei Well; S- 462 Mill Type; Internal tubing cutter 3 Gate Size; S-462 Tubing Cut N/a N/a 10 minutes to cut tubing. Perform tubing cuts on two wells with badly corroded Xtree and tbg head spools. Completion 3 ½ tubing. Tree & tbg head spool removed after freeze applied. P&A both wells. 5

6 Tubing cut below Hanger. 6

7 Date; 25/05/13 Alert / Shell BSP Brunei Well; S- 773 Mill Type; Internal tubing cutter 3 Gate Size; S-773 Tubing Cut N/a N/a 20 minutes to cut tubing. Perform tubing cut on 3 ½ tubing for Freeze and P&A 7

8 Tree removed after tubing cut and freeze applied. TMK Gate Valve Drilling Unit with cutter BHA. TMK GVD & HT units. 8

9 9

10 Date; 13/12/13 Well; Drill Type; Time to complete; Shell UK Brent Bravo North Sea BB-02 22mm Drill Rod 30 minutes per Tap. Two taps performed Perform Hot Tap on 7 tubing between permanent Bridge plugs set in lower completion. Bleed off 1300psi. Perform Hot Tap on 5.5 tubing below junk plug stuck in SPM. Hot Tap 7 Tubing Unit rigged up on 7 10

11 Tapped Hole 11

Date; 16/06/14 Well; Drill Type; Time to complete; Unit rigged up on 5 Shell Ireland Ocean Guardian West Coast Ireland Corrib P6 22mm Drill Rod 40 minutes per Tap.

12 Date; 16/06/14 Well; Drill Type; Time to complete; Unit rigged up on 5 Shell Ireland Ocean Guardian West Coast Ireland Corrib P6 22mm Drill Rod 40 minutes per Tap. Two taps performed Perform Hot Tap on 5 tubing between Interwell Bridge plugs set in lower completion. Bleed off 2800psi. Perform Hot Tap on 5 tubing between lower Interwell Bridge plug and Halliburton HX4 junk plug stuck in crossover. Bleed off 120psi. 5 Tubing after Hot Tap 12

13 22mm Hole 13

14 Date; 29/10/14 Alert Disaster Control Papua New Guinea Excavate cellar and perform multiple casing cuts so Well Head and BOPs could be installed on shallow gas blow out. 14

15 Date; 8/10/2015 Well; Mill Type; Gate Size; Talisman Sinopec Energy UK Limited Montrose Platform North Sea A21 4 Stepped Mill 4 1/16 410SS 500psi Swab 9hr, Lower Master 5.25hr Mill Swab and Lower Master valves so tree could be replaced after plugs set. A21 15

16 16

17 Date; 14/11/15 Well; Mill Type; Gate Size; A03 Talisman Sinopec Energy UK Limited Montrose Platform North Sea A03 4 Stepped Mill 4 1/16 410SS 500psi 2.5hr Mill Lower Master valve so tree could be replaced after plugs set. 17

18 Date; 10/06/16 Well; Mill Type; Ball Valve 12 ; Taqa Bratani Limited Cormorant Alpha N/A 22mm Drill Rod c/w 10mm Drill VB 12 Ball Valve Unknown Design and build a Hot Tap unit and Offset Clamp suitable for drilling into 12 Ball Valve cavity so sealant can be injected. 18

19 Date; 20/07/17 Apache UK Forties Alpha Well; Well FA 5-6 Mill Type; 6.25 Stepped Mill Gate Size; 7 1/16 INCOLOY 500psi 38hr (NOTE: Incoloy gates) Mill Lower Master valve on injector. 19

20 Date; 26/10/17 Southern North Sea Southern North Sea Well; Well 27 D Mill Type; 5 Stepped Mill Gate Size; psi 9hr Mill Lower Master valve. 20

21 Date; 20/01/18 EnQuest Thistle Platform Well; Well A47 Slot 47 Mill Type; 3 Stepped Mill Gate Size; psi 1hr Mill Lower Master valve. 21

22 Date; 17/03/18 EnQuest Heather Platform Well; Well H-63 Mill Type; 5 Stepped Mill Gate Size; 5 1/ psi 7hr Mill partially open Lower Master valve. 22

Casing Drilling- Recent Advances for Drilling Challenges. Allen Sinor Hughes Christensen- A Baker Hughes Company The Woodlands, Texas

Casing Drilling- Recent Advances for Drilling Challenges Allen Sinor Hughes Christensen- A Baker Hughes Company The Woodlands, Texas SPE Gulf Coast Section January 10, 2001 Casing Drilling History Casing