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Case Study 17

Technical Objective
Retrieval of injection valve from tubing crossover at 10,400ft

Customer
Independent Oil Producer, North Sea

Well type
Oil producer (max 40 deg deviation)

Products/Services
Peak's High Temperature/High Strength (HTHS) Magnet

The Challenge
A Customer was retrieving a bridge plug and injection valve to surface when the injection valve separated from the plug and landed at the 5-1/2" by 4-1/2" tubing crossover at 10,400ft.

An efficient method to fish the injection valve without causing damage to the tubing crossover was required so the injection value could be pulled and a new injection valve set.

Considerations
The following key requirements and concerns were identified:

  • A timely and effective intervention was critical to allow a new injection valve to be installed thereby minimising the impact on production
  • Damage to the tubing crossover was to be avoided

Peak’s Solution
Peak’s 4.5" OD High Temperature/ High Strength Magnet was run downhole on slickline to the location of the tubing crossover at 10,400ft.

At depth, the pick-up weight increased significantly - by over 50lbs - confirming the Magnet had a magnetised hold of the injection valve on the first attempt.

Due to the powerful strength of the Magnet, the injection valve was successfully pulled to surface.

Value to Customer
All operations were carried out safely and efficiently, minimising the period of reduced production from the well.

  • The tools were run in-hole without issue and successfully fished the injection valve within hours and on the first attempt
  • The Customer did not need to rent additional tooling to carry out the operation
  • Downward jarring was avoided thus preventing damage to the tubing crossover
  • A new retrievable bridge plug and injection valve are now set in the well and full injection available

Product Code(s): High Temperature/High Strength Magnet – 115