• Coiled Tubing Rod Strings

    Coiled tubing rod strings (CTRS) replace jointed sucker rods in reciprocating rod lift units.

     

    Description

    An innovative technology advancement in artificial lift is the use of a coiled tubing rod string (CTRS) to replace traditional jointed sucker rods in rod pumping units. CTRS have proven to be more efficient and cost effective than jointed sucker rods by reducing the frequency of required workovers and production downtime due to rod and pump failures. Ultimately, CTRS minimize downhole problems and allow the operator to focus on increasing production.

    Applications

    • Regular wells
    • Problem wells
    • Slim hole wells
    • Gas wells
    • High volume producing wells
    For more information about CTRS and artificial lift with coiled tubing, visit http://www.ctliftsystemsllc.com/.

     

    Features/Benefits

    • Minimizes and eliminates fishing jobs related to sucker rod coupling and pin failures due to only one downhole connection
    • Facilitates live-well preventative maintenance treatments, reducing downtime and associated costs
    • Ports at the bottom of the coiled tubing allow chemicals, hot oil or other fluids to rid particle accumulation and treat corrosion 
    • Deliquifies gas wells, acting as both a velocity string and reciprocating pump string
    • Reduces completion size for needed  productive flow rate, lowering lifting power requirements
    • Recovers uneconomical wells by converting them into slim holes to be pumped with coiled tubing 
    • Reduces particle build up due to increased production velocity through the coiled tubing

    Performance

    After replacing the sucker rods with CTRS, the operator has experienced over 40 months of uninterrupted production.

    Case

    A major operator in North America was having frequent unplanned well issues due to rod, tubing, and pump failures.. This required the well to be shut down and serviced every few months. The operator wanted a solution for treating the well and chose to replace the sucker rods  with coiled tubing.

    Solution

    Utilizing the ability to flush inhibitors through the hollow coiled tubing rod string, the operator implemented a quarterly preventative maintenance program circulating chemical treatments all the way to the top of the pump. The highly effective coiled tubing conveyance system was able to remove solids and other problematic debris in the well.

    Results

    As a result of installing CTRS, the operator significantly reduced downtime and associated workover costs, ultimately realizing over 40 months of uninterrupted production. In addition to eliminating  paraffin and sand issues, the operator provided 100% corrosion inhibitor coverage of the coiled tubing string and production tubing ID.

     

    Related Products