Casing Magnetization

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Significantly reduce the time to locate and intersect an uncontrolled well

The magnetic field generated by steel is used to locate the casing in an uncontained well and facilitate intersection with a relief well.

Pre-magnetization is a cost-effective method for increasing the detectable range of your casing when using passive magnetic ranging (PMR) techniques, with zero risk to your wellbore.

Pre-magnetizing casing facilitates PMR (also known as measuring-while-drilling (MWD) ranging). If this is not done, you may face the following issues:

  • Increased risk to safety, environment and production by compromising the ability to locate an uncontained well efficiently
  • Reduced ability to locate a well due to reliance on random and unpredictable remnant magnetic field of the casing from when it was manufactured
  • No guarantee that the steel will be detectable using PMR at an acceptable distance.

Proven benefits of pre-magnetization:

  • Increase the detectable range of casing and significantly improve ranging distance
  • Eliminate uncertainties associated with passive ranging techniques assuring that the wellbore can be located and intersected
  • Significantly reduce the relief well drilling time by reducing the number of ranging runs with active magnetic ranging (AMR) on wireline and the number of relief well sidetracks when using a direct approach without paralleling the wellbore
  • A low-cost solution delivering increased safety assurance without affecting the drilling operations

Casing is magnetized prior to being run in hole and Passive Magnetic Ranging may be used as the primary ranging method or in combination with Active Magnetic Ranging for the well situations listed:

  • Shallow reservoir and challenging relief well design
  • High resistivity zones e.g. salt formations limiting ranging techniques
  • Well avoidance when drilling from centralized locations

Learn more about how casing magnetization works

Our credentials and how we work

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How long does pre-magnetization usually take?

Typically, pre-magnetization takes:

  • 1 week of planning, assessment and scheme development
  • 1 week of transport of equipment and personnel
  • 2 days to magnetize casing at any casing yard anywhere in the world
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What are the requirements that apply to a pre-magnetization project?

  • A roof covered workspace with suitable casing rack.
  • Power supply: 32 A outlet (220-440 V)
  • Crane and or forklifts to move the casing
  • One assistant to help handling the coil
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Our team

Casing magnetization in this manner was jointly developed by Add Energy and Vector Magnetics LLC to proficiently detect and locate a well that has experienced a hydrocarbon release so that a new well can be drilled to intersect the compromised well to pump kill fluid to stop the blowout efficiently and effectively - a methodology that has been fine tuned over the last 10 years.

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Completed projects

We have magnetized casing for over 40 wells, some of our completed pre-magnetization projects include:

  • 20", 13 ⅝, 13 ⅜", 9 ⅝" and 7" for shallow set casing in Norway
  • 13 ⅜", 9 ⅝" for shallow set casing in Ghana
  • 9 ⅞" casing for salt formation in Gabon
  • 13 ⅜" for shallow set casing in Las Palmas, Spain
I Stock 899692732
Icon "Field testing of magnetized casing joints at surface has demonstrated that the effect is long lasting. The magnetized casing from testing in 2009 have been stored and after 10 years the effect is still high."

Oil and Gas Operator, Norway

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For more information on our casing magnetization solutions, or to speak to one of our experts, fill in this form and we will be in touch as soon as possible.