37 th Gas-Lift Workshop Houston, Texas, USA February 3 7, Dag Almar Hansen, CEO Gas-Lift Workshop 1. Feb. 3-7, 2014

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1 37 th Gas-Lift Workshop Houston, Texas, USA February 3 7, 2014 Dag Almar Hansen, CEO Feb. 3-7, Gas-Lift Workshop 1

2 37 th Gas-Lift Workshop Houston, Texas, USA February 3 7, 2014 Pressure management in B annulus Dag Almar Hansen Morten Roll Karlsen This presentation is the property of the author(s) and his/her/their company(ies). It may not be used for any purpose other than viewing by Workshop attendees without the expressed written permission of the author(s).

3 Topics covered Reasons for B annulus monitoring Challenges The electronics less wireless Feb. 3-7, Gas-Lift Workshop 3

4 Why monitor B-annulus? Requirement from the Petroleum Safety Authority FACILITIES REGULATION 48 WELL BARRIERS Well barriers shall be designed so that their performance can be verified KNOWLEDGE OF WELL BARRIER STATUS AT ALL TIME Feb. 3-7, Gas-Lift Workshop

5 Why monitor B-annulus? Norways 2 major exports are: Oil & gas Marine produce Feb. 3-7, Gas-Lift Workshop

6 Challenges Feb. 3-7, Gas-Lift Workshop

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10 Challenges

11 Today s solution for verification of barriers for Subsea WH systems Periodic testing of A- annulus for gaslifted subsea wells 1) Require well shut in > 12 hours - EXPENSIVE 2) Method is prone to error due to the GLV Handling of annulus leakages: ACV BMV AMV Gas Lift Valve A B C ASV PMV Horizontal x-mas tree DHSV PWV COV AWV Small Tubing to annulus leaks on subsea wells require workover PT Not possible to know status of production casing Reservoir

12 Statoil wells with need of B-annulus monitoring 12 existing subsea fields on the NCS with gas lifted wells 2 existing TLP platforms with no monitoring possibility of B-annulus Many new subsea fields under development. Most wells to be gas lifted. Technology also a good standard on all types of subsea wells

13 The future is NOW and the method is innovation Statoil: We are looking for new technology and methods.. More efficient methods for pulling/removing casing strings in slot recovery Alternatives to section milling for creating annulus barriers Alternative materials for annulus barriers P&A without cutting and pulling the tubing and casing P&A of subsea wells without a rig Logging through multiple casings Preventing leak paths from e.g. control cables Optimum well construction for future P&A Source: Statoil Homepage

14 New, revised NORSOK D010 Standard. Rev June Feb Gas lift wells The large volume of pressurised hydrocarbon gas in both surface lines and in the A-annuli represents a substantial risk to a platform. The volume of released hydrocarbon gas due to accidental damage to the tree, wellhead or surface lines shall be minimized. All gas lift wells shall have two barriers to prevent release of the A- annulus gas volume. Gas lift platform wells shall have an ASV installed in the A-annulus. A downhole gas lift injection valve (if qualified as a WBE) can be used as an alternative to an ASV in subsea wells. The following apply: a) An analysis shall be performed to assess the risk of release of hydrocarbon gas to the surroundings (air, water column) if the wellhead / production casing barrier elements are lost. The total risk assessment for the installation shall include this analysis. b) Casing and tubing exposed to gas-lift gas should have ISO CAL IV qualified connections that are correctly made up and tested. c) All wells shall have continuous monitoring of the B-annulus with alarms. For subsea wells the B-annulus shall be designed to withstand the effect of thermal induced pressure (APB). 14

15 New, revised NORSOK D010 Standard. Rev June Feb-14 15

16 Technical Challenges years operation No penetration into B-annulus Continuous monitoring No maintenance on well components Standard casing carbon steel Retrofit with present design and control systems Feb. 3-7, Gas-Lift Workshop

17 Strategy to meet the challenges 1. No active electronics in the well 2. Function with any casing material 3. Provide online data 4. Easy Installation 5. Retrievable sub sea electronics Feb. 3-7, Gas-Lift Workshop

18 How do we accomplish this? We ENERGIZE and measure by the speed of sound It varies with temperature It varies with pressure No electronics inside the wellbore No penetration of casing Gauge itself is metal and long-life fluid It s an electronics less wireless Patented principal solutions for the system Feb. 3-7, Gas-Lift Workshop

19 The electronics less wireless We energize

20 The electronics less wireless We receive data

21 The electronics less wireless No batteries needed

22 System overview

23 BAMSE signal path 2. A standard down hole cable feeds an ultrasound transducer attached to the production casing 4. The sound penetrates AC the casing and a coupling horn transmit the sound to the.. 1. A pulse is generated at seabed level 6... waveguide Casing Feb. 3-7, Gas-Lift Workshop

24 BAMSE return path 4...the ultrasound transducer attached to the production casing converts the signal to an electric signal 3...casing and.. 5. The same standard down hole cable feeds.. ADC 2. The coupling horn transmit the sound to the the ADC at seabed level 1. An ultrasound mirror reflects the signal Feb. 3-7, Gas-Lift Workshop

25 B Annulus Monitoring pilot THE ELECTRONICS LESS WIRELESS No active electronics in the well Function with any casing material Provide online data Easy Installation Retrievable sub sea electronics

26 Other scenario Cement barrier integrity check

27 Other scenario Pressure control while drilling

28 Other scenario Lost production pressure monitoring on open

29 Other scenario Casing structural integrity

30 Other scenario All passive plugging and abandonment monitoring ROV P?

31 Early detection is blowout prevention Thank you for your attention. Questions? Dag Almar Hansen. tel: Feb. 3-7, Gas-Lift Workshop

32 Copyright Rights to this presentation are owned by the company(ies) and/or author(s) listed on the title page. By submitting this presentation to the Gas-Lift Workshop, they grant to the Workshop, the Artificial Lift Research and Development Council (ALRDC), and the American Society of Mechanical Engineers (ASME), rights to: Display the presentation at the Workshop. Place it on the web site, with access to the site to be as directed by the Workshop Steering Committee. Place it on a CD for distribution and/or sale as directed by the Workshop Steering Committee. Other uses of this presentation are prohibited without the expressed written permission of the company(ies) and/or author(s) who own it and the Workshop Steering Committee. Feb. 3-7, Gas-Lift Workshop 32

33 Disclaimer The following disclaimer shall be included as the last page of a Technical Presentation or Continuing Education Course. A similar disclaimer is included on the front page of the Gas-Lift Workshop Web Site. The Artificial Lift Research and Development Council and its officers and trustees, and the Gas-Lift Workshop Steering Committee members, and their supporting organizations and companies (here-inafter referred to as the Sponsoring Organizations), and the author(s) of this Technical Presentation or Continuing Education Training Course and their company(ies), provide this presentation and/or training material at the Gas-Lift Workshop "as is" without any warranty of any kind, express or implied, as to the accuracy of the information or the products or services referred to by any presenter (in so far as such warranties may be excluded under any relevant law) and these members and their companies will not be liable for unlawful actions and any losses or damage that may result from use of any presentation as a consequence of any inaccuracies in, or any omission from, the information which therein may be contained. The views, opinions, and conclusions expressed in these presentations and/or training materials are those of the author and not necessarily those of the Sponsoring Organizations. The author is solely responsible for the content of the materials. The Sponsoring Organizations cannot and do not warrant the accuracy of these documents beyond the source documents, although we do make every attempt to work from authoritative sources. The Sponsoring Organizations provide these presentations and/or training materials as a service. The Sponsoring Organizations make no representations or warranties, express or implied, with respect to the presentations and/or training materials, or any part thereof, including any warrantees of title, noninfringement of copyright or patent rights of others, merchantability, or fitness or suitability for any purpose. Feb. 3-7, Gas-Lift Workshop 33