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N-SQUEEZE™ and N-PLEX™ Acid Soluble Lost Circulation Materials

N-SQUEEZE™ and N-PLEX™ Acid Soluble Lost Circulation Materials. customer CHALLENGE. Fluid losses when drilling into fractured formations. customer CHALLENGE. Risks associated with fluid losses: High costs associated with replacing drilling fluids

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N-SQUEEZE™ and N-PLEX™ Acid Soluble Lost Circulation Materials

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  1. N-SQUEEZE™ and N-PLEX™Acid Soluble Lost Circulation Materials

  2. customerCHALLENGE Fluid losses when drilling into fractured formations

  3. customerCHALLENGE • Risks associated with fluid losses: • High costs associated with replacing drilling fluids • Formation damage associated with remedial treatments • Loss in hydrostatic pressure can cause influx of gas or fluid, resulting in blowout of well (extreme cases)

  4. Types of Lost Circulation

  5. Baroid’sSOLUTION N-SQUEEZETMlost circulation material is a non-damaging cross-linkable water soluble polymer that helps cure lost circulation in many different applications. N-PLEXTMcross-linker contains a retarding agent to achieve a crosslinking time of approximately 2-4 hours, allowing time to place the N-SQUEEZE slurry across the loss zone.

  6. Applications • N-SQUEEZE / N-PLEX Lost Circulation Material Applications: • Helps cure lost circulation in vugular or fractured formations • Temporary plug to run in front of cement squeezes • Improve casing shoe integrity • Seal unconsolidated formations

  7. keyFEATURES • Acid soluble • Single sack product • Adjustable, time-delayed cross-linking capabilities • Biodegradable, non-damaging to production zones

  8. N-SQUEEZE / N-PLEX Data • Reaction is a pH/temperature dependent mechanism • Higher temperatures require a higher pH for cross-linking The figure above depicts the relationship of concentration of available cross-linking agent with pH and temperature in 5% KCl brine.

  9. N-SQUEEZE / N-PLEX Data • Must be pH-balanced to set the conditions for the optimal cross-linking at a given temperature. • Can be tuned to react and thermally degrade at desired rates based on temperature by altering the concentration of cross-linker in the formula.

  10. customerBENEFITS • Cost-efficient • Low cost solution • Less risk of fluid losses • No need for costly cement equipment • Can be pumped through existing bottom hole assembly, reducing rig time associated with tripping and mixing conventional LCM treatments • Remains flexible, mitigating risk of kick-off / sidetracking • Operational advantages over conventional reactive and temperature activated methods • Adjustable reaction time • Non-damaging to the formation

  11. BAROID’S N-FLOWTM Filter Cake Breakers • Baroid’s N-SQUEEZE™ & N-PLEX™ acid soluble lost circulation materials are an efficient, low cost solution for treating lost circulation in the reservoir. Non-damaging to the formation!

  12. CASE STUDY: Lost Circulation Treatment Helped Cure Lost Circulation in Deepwater MalaysiaLocation: Kuala Lampur, Malaysia CHALLENGE • Severe downhole losses observed after attempting to pull completion packer out of production casing • Initial losses – 138-300 bbl/hr • Fluid densities were reduced, but severe downhole losses continued • Total of 400 bbls of viscosifer pills pumped over 3 day period, but proved ineffective SOLUTION • Baroid recommended spotting N-SQUEEZE™/N-PLEX™ acid soluble cross-linking pill • A 75 bbl N-SQUEEZE / N-PLEX pill was prepared with the cement unit and pumped downhole • Once the pill cleared the completion packer, the pill was allowed to set for 4 hours • Pressure was monitored and circulation was re-established • Operations resumed and the upper completion string and packer were retrieved from the well RESULTS • The N-SQUEEZE/N-PLEX pill helped the operator save 2 days of rig time and additional fluid losses estimated at $252,000 • The ability to retrieve the completion packer without having to plug and abandon also resulted in significant cost savings • As the upper 9 5/8” casing profile would have been lost, it would not have been possible to sidetrack and re-complete the well, preventing the operator from achieving target production

  13. relatedDOCUMENTS Product Data Sheets Case Histories

  14. Baroid scientists and engineers work with state of the art equipment and an extensive global database in order to perform comprehensive testing analysis on a global scale. BAROIDLaboratory Support Baroid’s Laboratory Services include: • Analytical technical support • Bioassay technical support • Reservoir fluids technical services • Drilling fluids technical services • Industrial drilling products lab • Quality assurance • Research and development

  15. Reservoir Drilling Fluids Breaker Systems Completion Fluids Wellbore Clean-Up and Displacement Packages Breaker Systems for Polymer and Solids Removal Lost Circulation in Pay Zones Solutions • BAROIDRESERVOIR FLUID SOLUTIONS

  16. discoverBAROID ecosystem Click on image above to launch ecosystem,then click on Launch Interactive ► Where people, processes, and technology are brought together to build customized solutions, optimize performance and deliver distinctive service quality. www.halliburton.com/baroid

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