Please enable JavaScript for this site to function properly.
OnePetro
  • Help
  • About us
  • Contact us
Menu
  • Home
  • Journals
  • Conferences
  • Log in / Register

Log in to your subscription

and
Advanced search Show search help
  • Full text
  • Author
  • Company/Institution
  • Publisher
  • Journal
  • Conference
Boolean operators
This OR that
This AND that
This NOT that
Must include "This" and "That"
This That
Must not include "That"
This -That
"This" is optional
This +That
Exact phrase "This That"
"This That"
Grouping
(this AND that) OR (that AND other)
Specifying fields
publisher:"Publisher Name"
author:(Smith OR Jones)

Video: Successful Campaign Using Coiled Tubing to Perforate Five HPHT Wells in the UK Central North Sea

Authors
Michael John Taggart (Baker Hughes Inc) | Truong Phan (Baker Hughes Inc) | Lewis Murray (Baker Hughes Inc) | Mike Cassidy (NRG Resources Limited)
Document ID
SPE-170805-PT
Publisher
Society of Petroleum Engineers
Publication Date
2014
Document Type
Presentation
Language
English
Copyright
2014. Copyright is retained by the author. This document is distributed by SPE with the permission of the author. Contact the author for permission to use material from this document.
Keywords
High Pressure High Temperature, Completions, Perforating, Coiled Tubing
Downloads
0 in the last 30 days
2 since 2007
Show more detail
View rights & permissions
SPE Member Price: USD 7.00
SPE Non-Member Price: USD 12.00

Abstract

This paper details the planning, design and execution of a successful campaign to perforate five HPHT wells, using Coiled Tubing (CT), in the UK Central North Sea. The project goal was to perforate extended intervals, in live well conditions, in one run and leaving no guns or restrictions downhole.

The well conditions presented challenges to the design and operation of CT in this campaign. Challenging factors included:

  • The use of high yield strength CT (130,000ksi grade material).
  • Wellhead pressure up to 9,000 psi.
  • Bottomhole pressure up to 12,500 psi.
  • Estimated BHT 375° F.
  • Estimated FWHT 320° F.
  • Well depths of 21,000 ft MDRKB.
  • Deployment of up to 1,645 ft of 2 7/8” perforating guns.
  • Perforating gun string retrieval to surface.
  • No rathole to drop guns due to:
    • Penetration of the reservoir water bearing zone, potentially leading to produced water and scaling issues in later well life.
    • Access required across the formation for data acquisition and reperforation operations.
    • Cost and time involved drilling hard HPHT formations.

Job design was critical to the success of the operation and consideration given to learnings from similar previous operation. This included selection and analysis of CT material, size, wall thickness and managing potential CT collapse pressure following reservoir perforation.

Further analysis, included calculation of CT stretch, circulation pressure, and wellbore solids removal studies.

Reverse circulation through the CT was carried out. This would increase the effectiveness of fluid displacement when creating an underbalance situation prior to perforation. In order to maintain pressure barriers specific tooling was required to minimise the risk during this operation.

You may also be interested in…

SPE

Successful Campaign Using Coiled Tubing to Perforate Five HPHT Wells in the UK Central North Sea

Taggart, Michael John, Baker Hughes Inc
Phan, Truong, Baker Hughes Inc
Murray, Lewis, Baker Hughes Inc
Cassidy, Mike, NRG Resources Limited
170805-MS SPE Conference Paper - 2014
View rights & permissions
  • Quick Abstract
  • Metrics

3 downloads in the last 30 days
256 downloads since 2007

Other Resources

Looking for more? 

Some of the OnePetro partner societies have developed subject- specific wikis that may help.


 


PetroWiki was initially created from the seven volume  Petroleum Engineering Handbook (PEH) published by the  Society of Petroleum Engineers (SPE).








The SEG Wiki is a useful collection of information for working geophysicists, educators, and students in the field of geophysics. The initial content has been derived from : Robert E. Sheriff's Encyclopedic Dictionary of Applied Geophysics, fourth edition.

  • Home
  • Journals
  • Conferences
  • Copyright © SPE All rights reserved
  • About us
  • Contact us
  • Help
  • Terms of use
  • Publishers
  • Content Coverage
  • Privacy
  Administration log in