Real Results

Performance By The Numbers

Advanced Kickover Tool

Custom-Engineered for Subsea Gas Lift Intervention in Shut-In Gulf of Mexico Well, Production Restored Within Four-Month Window

Objectives

  • Replace leaking gas-lift valve (GLV) at short notice (due to the operating window) on a subsea intervention vessel. The well was shut in and not producing, incurring significant daily costs.
  • Allow the kickover tool to pass a minimum restriction of 3.313 in., then operate in a larger ID of 3.815 in.
  • Function in a high-angle 65° well at 12,000 ft (3,657 m) with an S-shaped profile.

Our Approach

  • With the well shut in and not producing, Weatherford experts identified a four-month window to plan and execute the operation. Among the factors considered were intervention vessel availability, time to design a kickover tool to pass minimum restriction, manufacturing, and testing.
  • The Weatherford KOT series of kickover tools are an essential part in fully integrated gas lift systems. The unique re-pinning feature saves time by eliminating extra runs in the rare case of a missed installation or pull attempt.
  • Engineers modified an existing, standard size tool (3.500 in./3.700 in.) to the special clearance size of 3.313 in. This involved the creation of new manufacturing drawings, assembly drawings, and a detailed field operation and maintenance manual.
  • Key features of the modified kickover tool ensured operational success:
    • Friction-reducing “rollers” top and bottom to aide conveyance in/out of SPM, especially beneficial on high angle wells
    • Spring-loaded “offset dogs” to enable the kickover tool to pass through the minimum restriction and then open up in the SPM bore
    • Engineered trigger mechanism and “parallel arm” for efficient valve installation/retrieval to prevent damage to the seals and packing
    • Integrated valve catcher and “radially balanced” body
  • The design was completed in 4 weeks, manufacturing completed in 8 weeks, system integration test, and deployment offshore to meet the operating window.

Value to Customer

  • Weatherford expertise and efficient engineering enabled the team to modify an existing KOT series kickover tool to meet the project objectives.
  • The modified kickover tool was successfully deployed through the smaller ID restriction and operated in the larger OD.
  • The installation of a replacement gas-lift valve brought the well back into production.
  • With a rate of +/- 5,000 barrels per day at approximately $80 per barrel, the operator was again able to generate $400,000/day in production.
Details

Location

Gulf of Mexico

Well Type

Deepwater, oil and gas

Hole Angle

65°

Depth

12,000 ft (3,657 m)

Products/Services

Advanced Kickover Tool
Advanced Kickover Tool

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