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Wireline Shear& Seal Valve Applications& Specification

Applications of the Elmar WirelineShear and Seal Valve

Elmar have a patented solution tothis problem to the market;The Wireline Shear and Seal Valve• Cut the slickline or e-line cable and seal the well, in one fast action• Create a certified, long term barrier if needed• Reduced rigup time on platforms with access restrictions due to the small size of the WSSV• Verified cutting performance• Can be manually closed, as a backup

In certain unexpected situations operators or wireline servicecompanies require the ability to cut the wireline cable and seal thewell as soon and securely as possible. Traditionally this might be carried out using either one of the tree valves or a wireline valve (BOP) dressed with a set of shear/seal rams, either of which would beconsidered a non-active secondary barrier. There are drawbacks to both methods:

• The tree valve might not be designed to cut cable and if that is the case even if it does cut the cable it might not seal aft erwards, leading to an even more complex situation. Many operators also require that if a tree valve is to be used as a cutting device it should be equipped with the ability to operate remotely.

• The wireline BOP will cut the cable only if it has been specifically dressed with shear/seal rams. If so, the time taken to make the cut will be a function of the BOP size and the control module used, but is typically 30-60 seconds unless a high volume control module is being used. In addition, many operators will require that the cutting device (in this case, wireline BOP is positioned directly above the production wellhead which in the case of an off shore platform will be below a deck. Considerable rig time will be used to remove hatches to allow the wireline BOP to be lowered onto the wellhead. Further drawbacks include the fact that it is not possible to manually shear the cable and generate a seal in an emergency situation, and if no pressure diff erential exists across the rams an eff ective seal relies upon the continuous application of hydraulic pressure.

Patented wirecutting mechanism

Quick union orflanged connection,and optionalpump in sub

Fast actionactuator

Bore size 3” to 9”,single or dualconfiguration

Wireline Shear and Seal Valve

Previous page left Typical Elmar electric line pressure control equipment string showing a dual WSSV in position

Previous page bottom left WSSV with optional pump-in sub

Specifications and Technical Details

Wireline Shear and Seal Valve• Bore sizes available 3.06”, 4.06”, 5.12”, 6.38”, 7.06” – 9” on request• All variants suitable for H2S service• Working Pressure Ratings 5kpsi, 10kpsi and 15kpsi• Connection types, quick union top and bottom, flange top and bottom (lower is integral) and flange lower (integral) and quick union upper• Available with pump in sub PIS (1502 for 10k and 2202 for 15k)

• Third party verified shearing performance (6 x 0.125” slickline, 2 x 5/16” braided and all other known wireline sizes)• Single and dual cut and seal version available• All valves supplied with crash frame and off set lift ing bail as standard• Tool provided to operate the equalisation manifold (secured with lanyard to crash frame)• PR2 planned completion in Q2 2015, temperature range P to V

• Full metal to metal seal version available from Q3 2015• Compliant with API 6A and NACE MR0175/ISO 15156, with third party design approval

Transport Frame• Transport Frame available for all valve configurations • Can also carry control module if specified• DNV certified if required• Test stump available to facilitate testing of quick union WSSV variants within the transport frame


Optional Accessories• Full control module, supplied with accumulator back up and optional hose reels• Accumulator module, to be used with client’s existing hydraulic control modules but to provide accumulator back up and fast closing times• Manual operations kit, allows valve to be manually operated as a back up to the hydraulic system• Service tool kit, provides kit of tools required for valve strip down and rebuild

Frequently Asked Questions onthe Wireline Shear and Seal ValveQ: Why do I need a WSSV? I have a wireline valve (BOP) which I can dress with shear/seal rams.A: Many operators now call for a dedicated cutter valve, and want it to close fast. The BOP option is also far larger and with a seal which is not as reliable.

Q: I heard it is patented. What aspect is patented? A: The mechanism which prevents damage to the sealing surface whilst the wire is being cut, and therefore allows us to provide such a reliable and repeatable seal with minimal redress requirements.

Q: Where do we put it in the PCE string?A: As close to the wellhead as possible, to reduce the number of active seals should it be activated. It is full bore, meaning that the wireline toolstring can pass through it.

Q: How do I operate it?A: It’s just an hydraulic supply. You can use a control module if you have one already, with our accumulator module connected to it if you wish or, you can purchase the small dedicated WSSV control module. It can be operatedmanually but given that this is a safety device we recommend that manual closing is only considered as a backup.

Q: How long does it take to cut and close?A: It is far quicker than closing BOP rams due to the smaller hydraulicvolume. It depends upon the size of WSSV but it’s around 5-10 seconds.

Q: Does it just cut one wire? What if my tools were blown up the hole and I have a mess of cable pushed into the WSSV?A: The ball will cut multiple strands of cable. We tested with 6 strands of 0.125 slickline. It will cut all common wireline cables in use in our industry today.

Q: Have you actually made many of these or is it just a prototype?A: Yes, these have been requested by operators in all regions of the world and we have sold many of them. We are now launching the MKII version to enhance the WSSV.

Q: What’s the diff erence with the MKII version?A: It is more simple to operate and requires less maintenance between jobs.

Q: Can I see one please?A: Yes, we have demo versions. Please contact your local Elmar off ice.

Elmar - Singapore 7 Loyang WaySingapore 508721Singapore T +65 6546 0928F +65 6546 [email protected]

Elmar - Canada (DynaWinch Products)6771 - 84 Street SE Calgary, Alberta T2C 4T6 Canada T +1 403 319 2333 F +1 403 319 2337 [email protected]

Elmar - UAE Oilfields Supply Center B-17Jebel Ali Free ZoneP.O. Box 18633Dubai, United Arab EmiratesT +971 4 810 0100F +971 4 883 [email protected]

Manufacturing Locations:

Elmar - USA11995 FM 529 Houston, TX 77041 United States of America T +1 713 983 9281 F +1 713 983 8892 [email protected]

Elmar - UKEnterprise DriveWesthill Industrial EstateWesthill, Aberdeen, AB32 6TQScotland, United KingdomT +44 1224 740261F +44 1224 [email protected]

Elmar - USA (Artex Products)6351 Highway 36 South Brenham, TX 77833-7055 United States of America T +1 979 836 5533 F +1 979 836 8822 [email protected]

Elmar - Netherlands Energieweg 262964 LE Groot-Ammers The Netherlands T +31 184 608 700 F +31 184 608 790 [email protected]

Regional Sales, Rental & Service Locations:

Stavanger, Norway T +47 51 81 81 [email protected]

Al-Khobar, Saudi ArabiaT +966 3 887 [email protected]

Al-Khobar, Saudi ArabiaT +966 3 887 [email protected]

Edmonton, CanadaT +1 780 955 2898 [email protected]

Perth, AustraliaT +61 8 9456 0999 [email protected]

Louisiana, USAT +1 337 839 0024 ext 201

Representative Offices:

Beijing, ChinaT +86 10 8485 1973

Moscow, Russia T +7 495 287 2691


Corporate Headquarters7909 Parkwood Circle Drive Houston, Texas 77036 USA

National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user’s risk and are the user’s responsibility.

© 2015 National Oilwell Varco | All Rights Reserved D392006168-MKT-001 Rev 01

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