Back to results
US 12,241,363 B2Granted
Steerability of downhole ranging tools using rotary magnets
AssigneeHalliburton Energy Services, Inc.
InventorsPete L. Schiermeier, Sean Hinke
Life of this patent
Estimating the term…
Abstract
A ranging system having magnets positioned at various locations along the drive system. Location of the magnetics is shifted to different points on the drilling string to remove the need for a nearby bit sub that would detrimentally affect the steerability of the drilling system.
Claims20
A downhole ranging tool, comprising:
- a tubular string having a bottomhole assembly (“BHA”) comprising a drive system and a drill bit;
- and
- one or more ranging magnets positioned along the tubular string, wherein at least one of the one or more ranging magnets is positioned between a drill bit box and push pads of the drive system,
- wherein the downhole ranging tool is configured to alter at least one magnetic field frequency of the one or more ranging magnets by changing between multiple rotation methods, comprising:
- rotation of the tubular string alone,
- rotation of the drive system alone, and
- a combination of the rotation of the tubular string and the drive system.
4 more elements
A downhole ranging method, comprising:
- generating, by way of two or more ranging magnets positioned along a tubular string in a first wellbore, one or more magnetic fields;
- measuring the one or more magnetic fields using one or more sensors in a second wellbore;
- and
- determining, from the measuring of the one or more magnetic fields, distance of the first wellbore relative to the second wellbore, wherein:
- one or more of the ranging magnets are located between a drill bit box and push pads of a drive system;
- at least one frequency of the one or more magnetic fields is based on rotation of the tubular string in combination with rotation of the drive system.
3 more elements
A downhole ranging tool, comprising:
- a tubular string having a bottomhole assembly (“BHA”) comprising a drive system and a drill bit;
- and
- one or more ranging magnets positioned along the tubular string,
- wherein at least one of the one or more ranging magnets is positioned between a drill bit box and push pads of a steering collar, and
- wherein the drive system comprises a push-the-bit rotary steerable system.
2 more elements
Dependencies are inferred from the claim text.