Bridge Plugs Procedure

Document No.: Revision: Revision Date:

FC-GUIDE-0002 .01 Oct 05, 2004

2-3/8" and 2-7/8" Bridge Plug Procedures Standard Programme for Running Slickplug Proposed Toolstring 1.500” Rope Socket, 1.500” Accelerator, 8ftx 1.500" Stem, 1.5" PAJ and 1.500" Long Stroke Mechanical Jars. Note: The above toolstring is only a proposal. It is the responsibility of the Field Supervisor to vary from the proposed set-up should well and/or operational conditions dictate. Running Tool Recommendations After the drift run has been completed any problem areas within the well should have been highlighted and a rough figure established to estimate pick-up weight at setting depth. It is recommended that the appropriately sized DU be used under normal conditions. The use of this tool allows the Operator to perform a check pull to establish that the Plug is securely held in place by the upper slips The correct selection of running tool and toolstring components ultimately relies on the experience of the Field Supervisor to interpret what effect operational and/or well conditions will have on setting procedure. Surface Equipment Checks Wire records checked and wire tested, Martin Decker load cell checked and in calibration. All other associated Wireline tools are to be in good working order. Drift Run The Slickplug drift is as supplied by Weatherford, any other form of drift, i.e. gauge cutter etc will not give an accurate resemblance of Well conditions which will assist the setting operation of the Slickplug. Pinning procedures for Slickplugs will be established after the drift run is completed, as this will indicate any problem areas within the well. Drift Run Procedure 1. Make-up appropriate Slickplug Drift to Wireline toolstring with Pulling Tool (pinned with steel). 2. Run in hole with Drift to setting depth at a maximum speed of 120 ft/min, taking care when passing through down hole assemblies and restrictions. 3. Continue to run in hole with Drift past Slickplug plug setting depth and record maximum pick up weight. 4. Pull out of hole with drift. Slickplug Running Procedures 1. Ensure checklist (WQF-2-OP-O93) has been completed then make up Bridge Plug and Running Tool to Wireline Toolstring ensuring that the Pump Open Plug and/or Equalising Device are installed. 2. Run in hole with Slickplug assembly at a maximum speed of 120ft/min, slowing down when passing through all down-hole assemblies. 3. Should the Plug hang up at any point whilst running in hole, i.e. at a Gas Lift Mandrel, then the Plug should be lifted up by only 2ft approximately to activate the ‘J’ mechanism then run in hole. Do not attempt to tap Plug through any restriction. It is at the discretion of the Operator as to how many attempts may be made to pass any restriction. 4. Run in hole to approximately 25ft past setting depth then pick up to 2ft above setting depth (note pick up weight). By slacking off the tool weight, the Slickplug should rest on the lower slips. However, should it be necessary to move the Plug to a different depth, this can be achieved by picking up the Plug and repeating this procedure. 5. Once landed on the lower slips, downward jarring will shear the shear screws in the upper slip holder to allow upper slips to move onto cone assembly. Page 1 of 2 Flow Controls – Slickplugs

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Weatherford products and services are subject to Weatherford’s standard terms and conditions. For more information concerning the full line of Weatherford’s product and services, please contact your authorised Weatherford representative. Unless noted otherwise, trademarks and services marks noted herein are the property of Weatherford. http://www.weatherford.com/

©2004 Weatherford. All rights reserved. ED-033 RO

Document No.: Revision: Revision Date:

FC-GUIDE-0002 .01 Oct 05, 2004

6. Jar down a minimum of 40 times in order to set the top Slips and energize the Packing Element. The amount of jars required will change according to well conditions and it is the responsibility of the field supervisor to determine this requirement. When the DU is used as the Running Tool 1. Take an over pull 150lb above the Pick up weight at setting depth. 2. Jar up to shear top pin in DU. 3. Jar down to shear main pin in DU to release from plug. 4. Pull out of hole. NOTE: Unlike other sizes of the Slickplug, the J Mechanism on the 2-3/8" & 2-7/8" Bridge Plug incorporates a different layout from the larger sizes. The 2-7/8” Slickplug has two setting positions and only one running-in position. The 2-3/8” Slickplug has two running-in positions and only one setting position.

Standard Programme for Pulling Slickplug Proposed Toolstring 1.500” Rope Socket, 1.500” Accelerator, 8ftx 1.500" Stem, 1.5" PAJ and 1.500" Long Stroke Mechanical Jars, Appropriate Size DU/GS and Pulling Probe If Slickplug equalization is required then the following steps should be followed; 2-7/8” Slickplug; Mechanical Equalization 1. Before attempting to equalize Slickplug ensure slight over balance in tubing pressure. 2. Run in hole with equalizing prong until it engages the Slickplug. 3. By jarring down the prong will travel into the equalizing device. Approximately 10-15 downward jars will shear the locating pins in the assembly allowing equalization to commence. 4. Pull out of hole and confirm Tell-Tale ring at top of the Prong must be sheared. 5. Make up appropriate size GS/DU with Pulling Probe to toolstring. 6. Run in hole, tag Plug, take pick up weight then engage into release mechanism of top sub and jar down. Pick up to confirm tool is latched, if not then repeat this step again. 7. Once the GS/DU has been confirmed to latch the Slickplug, the release mechanism has been operated. 8. The Slickplug should now be left in place for around 15 minutes to allow the Element to relax into a collapsed position. 9. Light jarring may be required to get the Plug off the bottom slips. 10. Pull out of hole with Bridge Plug assembly.

2-3/8” Slickplug; Hydraulic Equalization The 2-3/8” Slickplug requires a Pump Open Plug (or similar device) to be run as part of the plug assembly. This is because the internal diameter is too small on this size of Slickplug to allow the normal type of mechanical equalization. The size of POP pin to be discussed and agreed with on-site well services supervisor before running Plug.

Page 2 of 2 Flow Controls – Slickplugs

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Weatherford products and services are subject to Weatherford’s standard terms and conditions. For more information concerning the full line of Weatherford’s product and services, please contact your authorised Weatherford representative. Unless noted otherwise, trademarks and services marks noted herein are the property of Weatherford. http://www.weatherford.com/

©2004 Weatherford. All rights reserved. ED-033 RO