AccuPort

AccuPort™  Dynamic Pressure Profile Control with Wire Wrap Screen for Homogeneous Reservoirs.

Dynamic flow control  allows operators the flexibility to manage the pressure profile along laterals over the life of the well to delay water influx and improve well productivity. Completions using wire wrap screen for sand control are best suited to homogeneous oil and gas reservoirs with larger and uniform particle size distributions.

 

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AccuPort’s multi-position valve can close or open nozzles strategically positioned at the end of each sand control joint.

This flexibility in activating nozzles allows operators to control and repeatedly change the pressure profile along a lateral over the life of the well. Tailoring flow control aids in removing formation damage from drilling and completion fluids, delay water influx, and optimizing toe-to-heel inflow. AccuPort’s sand control sections are comprised of keystone shaped wire continuously wrapped and spot welded over perforated base pipe. The uniform gap size between each wire is sized to the specific reservoir characteristics. Unique applications can be addressed with erosion-corrosion resistant metallurgies and variety of options for length and diameter of the base pipe and screen sections.

AccuPort 1 web

 

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The Challenge

Well completion decisions must balance the need for efficient sand control with optimum well productivity and cost concerns. Operators are recognizing that all the intervals along laterals do not contribute production equally and the pressure profile of a well can change over the life of the well. They need effective ways to better manage the pressure profile from toe-to-heel of the well in order to delay water influx as the well ages. Another concern is sand entering the wellbore over time can reduce well productivity, damage surface facilities, or worse, cause expensive remediation and catastrophic well failure.

AccuPort
AccuPort

The Solution

AccuPort combines the most flexible flow control technology with a conventional gap based screen that is best suited to more homogeneous oil and gas reservoirs with larger and uniform particle size distributions.

  • Nozzle based flow control is viscosity independent which leads to delayed water influx. The flow control capability integrated into AccuPort can also be tailored to reservoir potential at each interval based on the orifice size of the nozzles.
  • Flow control capability can be modified repeatedly over the life of the well by activating a multi-position valve downhole to close or expose the nozzles.
  • AccuPort screen sections can be manufactured to various lengths and for 7-12% open flow area with proper gap size analysis.

Contact an Absolute Technical Application Manager for help in selecting the best options for your well.

Why does MeshRite have 40% Open Flow Area?

Well Productivity

AccuPort provides an effective inflow area that is 5 times greater than slotted pipe of the same gap size. Properly sized, AccuPort screen stops sand from entering the wellbore. Fluid flows through the wire gaps, along the supporting rib wires to the nozzles. Nozzles are viscosity independent flow control devices that serve to normalize, or even tailor, the pressure profile along the wellbore so as to inhibit water influx and promote oil production. A large flow area between the screen media and the base pipe prevents erosion and any undesirable pressure losses.

Injection Control

AccuPort can be configured for either production or for steam or chemical injection at the wellsite prior to deploying the screen system. For injection, the port plugs are removed, threaded nozzles installed and plugs are reinstalled. Fluids are pumped into the wellbore and exit through nozzles that are strategically placed so thief zones are shut off and injected fluids have their intended impact. The AccuPort flow path directs the fluid into the near wellbore area at the sand-screen interface for uniform injection of gas, water, or steam from toe-to-heel of the well.

Viscosity Independent Flow Control

Unlike channel or tube-based ICDs, nozzles are relatively viscosity independent as shown below with pressure drop through a 4.00 mm nozzle measured for various fluids. Viscosity independent nozzles enhance oil production while delaying or stopping water influx.

Flow-Control-Chart_201305261

AccuPort Applications

AccuPort is best suited for relatively consolidated, uniform sands with larger particle sizes.

  • Horizontal producer or injector wells requiring pressure profile control and sand control may not be required along the entire wellbore
  • Vertical wells with commingled zones of different pressures
  • Thermal wells that require uniform toe-to-heel steam injection
  • In combination with external/swell packers to isolate zones and minimize annular flow
  • As a limited entry perforation screen

Benefits

Flow Control

  • Facilitates uniform toe-to-heel sweep of reservoir
  • Delays onset of water/gas/steam coning for increased reserve recovery and net present value
  • Chokes off water zones and isolates shale zones
  • Allows operators to tailor flow control strength to the reservoir profile
  • Nozzles create a viscosity independent pressure drop unlike channel based flow control
  • Configurable inflow or injection control at the wellsite prior to deployment

Sand Control

  • 7-12% open flow area with keystone shaped wire that tends to self-clean, and resists plugging when properly sized
  • Welded wires at each point of contact resist screen damage under severe installation and operational conditions
  • Corrosion resistant 304 or 316L stainless steel metallurgy promotes long life in harsh production environments
  • Easy, fast installation allows faster formation damage clean up

Build Better Wells

A number of factors influence proper completion design. Absolute’s Technical Application Managers are available to assist you in achieving optimal well performance through:

  • Guidance on reservoir characterization and profiling
  • Down hole flow control design and configuration options
  • Screen options that balance long term well productivity and effective sand control with cost considerations

For heterogeneous sands and fines, MeshPort™  which is made with MeshRite™  screen is more effective. For cost sensitive applications, Tri-D FacsPort can be a more effective alternative to slotted liner and wirewrap screen.  For corrosive reservoir environments Tri-DPort  may be better. Flow control/sand control completions can be configured and tailored to specific formation characteristics, production requirements, and cost constraints. Please contact an Absolute Technical Application Manager for assistance.

AccuPort Options Available

Depending on the application, the AccuRite screen sections are built using 90L, 90, 90H, 47 or 47H wrap and rib wire. Typical AccuPort assemblies:

  • 30 feet of screen jacket on 38 feet of base pipe
  • 20 feet of screen jacket on 30 feet of base pipe
  • Customized lengths can be provided