04 Nipen Baker Hughes

"Every well needs one"SPE Aberdeen 4th European Well Abandonment Seminar

© 2012 BAKER HUGHES INCORPORATED. ALL RIGHTS RESERVED. TERMS AND CONDITIONS OF USE: BY ACCEPTING THIS DOCUMENT, THE RECIPIENT AGREES THAT THE DOCUMENT TOGETHER WITH ALL INFORMATION INCLUDED THEREIN IS THE CONFIDENTIAL AND PROPRIETARY PROPERTY OF BAKER HUGHES INCORPORATED AND INCLUDES VALUABLE TRADE SECRETS AND/OR PROPRIETARY INFORMATION OF BAKER HUGHES (COLLECTIVELY "INFORMATION"). BAKER HUGHES RETAINS ALL RIGHTS UNDER COPYRIGHT LAWS AND TRADE SECRET LAWS OF THE UNITED STATES OF AMERICA AND OTHER COUNTRIES. THE RECIPIENT FURTHER AGREES THAT THE DOCUMENT MAY NOT BE DISTRIBUTED, TRANSMITTED, COPIED OR REPRODUCED IN WHOLE OR IN PART BY ANY MEANS, ELECTRONIC, MECHANICAL, OR OTHERWISE, WITHOUT THE EXPRESS PRIOR WRITTEN CONSENT OF BAKER HUGHES, AND MAY NOT BE USED DIRECTLY OR INDIRECTLY IN ANY WAY DETRIMENTAL TO BAKER HUGHES’ INTEREST.

Version 2.0

Ole Petter Nipen – Baker Hughes

Agenda

� Introduction to TOGI Subsea P&A project

�Scope of work

�P&A operation Step by Step

�Big Fishing �Big Fishing

2 © 2013 Baker Hughes Incorporated. All Rights Reserved.

TOGI P&A Project

� 6 slot wellhead structure,

5 wells drilled in 1990

� All ROV operated

� 300 m water depth

� Closed in down since 2002

© 2013 Baker Hughes Incorporated. All Rights Reserved. 3

Scope of work

Batch P&A of 5 wells:

� Pull completion

� Log 9 5/8” casing

� Place 1st barrier

� Cut & Pull 9 5/8” Casing

� Place 2nd barrier


� Cut & Pull 13 3/8” casing

� Surface plug

� Remove wellhead, 30” and

42” casing

Contingency:

� Mill seal assembly

� Section mill 9 5/8” & 13 3/8”

� Casing mill 9 5/8”

� Cut & Pull 9 5/8” in one run

Pull Completion

Operational steps

� Pull tubing with THRT

� Tubing pulled down to PBR


9 5/8” X 10 ¾” section

� Log 9 5/8” X 10 ¾” Casing

� Place 1st Barrier Plug

� Cut 10 ¾” Casing Below Hanger


� Pull 10 ¾” Seal Assembly

� Remove 10 ¾” X 9 5/8” Casing

Remove 10 ¾” seal assembly


Remove 10 ¾” seal assembly


10 ¾” Seal Assembly and casing hanger

Mill 7 Seal Assembly

Remove 10 ¾” x 9 5/8” casing

� Cut & Pull in same run

� Cut in tension

� Pull up to max overpull prior to cut

� Pre-defined section cutted


� Saved eight run

Casing Mill

� Mill 58 meter of 9 5/8” Casing

� ROP was limited by swarf handling

� Small swarf

Define max ROP upfront!


Define max ROP upfront!

55

Contingency

� Contingency on all wells

� 9 5/8” & 13 3/8”


13 3/8” section

� Log 13 3/8” Casing

� Place 2nd Barrier Plug

� Pull 13 3/8” Seal Assembly


� Remove 13 3/8” Casing

18 5/8” section

� Set 18 5/8” Mechanical Plug

� Place Surface Cement Plug

� Cut & Pull 18 5/8”


� Cut & Pull 30”

� Cut & Pull 42”

Big Fishing

1. Remove 18 5/8” wellhead (Blue)

2. Remove 30” Conductor (Red)

3. Remove 42” Washout sleeve (Green)

Shear at 136 ton


Cut & Pull 18 5/8” Wellhead

D-spear

� Two Trip Solutions

� Dressed to catch ID:18,000"-19,162"


D-spear Wellhead

Cut 30”


Pull 30” Conductor


��

E-spear

20 ¾” D-spear

Cement?

� Cement above 42” hanger and inside template housing!


45 ½” Cement MillCement outside of 30”

Cut 42”


MS-Cutter with Stabilizer 42” Conductor cut

Pull 42”

Remove 42” Washout sleeve (green)

� Catch 38,5”


Modified E-Spear

Stack-Up Test

42” Conductor on Deck

Big Fishing

Movie


TOGI P&A Project – Sum up

Operational time: 1208.4 hrs

Downtime: 4.5 hrs

Operational factor: 99.62%

Mill 9 5/8” & 13 3/8” Seal Assembly: 7 seal assy milled

Cut operation of 9 5/8”, 10 ¾” & 13 3/8”: 16 run


Cut operation of 9 5/8”, 10 ¾” & 13 3/8”: 16 run

Cut & pull operation with Spear, and motor: 8 run!

Pulling & Cutting operation: 25 run

9 5/8” casing milled: 58 meter

TOGI P&A Project – Sum up

� Robust fishing package offshore

� Standardise BHA`s

� Milling Seal Assembly

� Back-up equipment for Big Fishing Tools

� Personnelo Planning and follow up operation

o Operators offshore


Operational factor: 99.62%

Questions?


04 Nipen Baker Hughes

Documents

Transcript of 04 Nipen Baker Hughes