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US 2017/0247964 A1Published application
Latchable casing while drilling systems and methods
AssigneeHalliburton Energy Services, Inc.
InventorsHernando Q. Jerez, Richard T. Hay, John G. Evans, Rohit Sankeshwari
Life of this patent
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Abstract
Latchable casing while drilling systems and methods are disclosed. Some system embodiments include a casing string including an upper latch apparatus and a lower latch apparatus. The system also includes a bottom hole assembly (BHA) latched into the lower latch apparatus for steerable drilling, the BHA configured to latch into the upper latch apparatus for enlarging a rat hole.
Claims20
A casing while drilling system, comprising:
- a casing string comprising:
- an upper latch apparatus;
- and
- a lower latch apparatus;
- and
- a bottom hole assembly (BHA) latched into the lower latch apparatus for steerable drilling, the BHA configured to latch into the upper latch apparatus for enlarging a rat hole.
3 more elements
A casing while drilling method, comprising:
- assembling a casing string comprising an upper latch apparatus and a lower latch apparatus;
- latching a steerable bottom hole assembly (BHA) into the lower latch apparatus;
- steering the casing string along a trajectory to a total depth;
- repositioning the BHA to latch into the upper latch apparatus;
- and
- enlarging a rat hole at or under the total depth.
3 more elements
A cementing method, comprising:
- assembling a casing string comprising an upper latch apparatus and a lower latch apparatus;
- positioning the casing string within a borehole;
- latching a cement valve into the lower latch apparatus;
- latching a second cement valve into the upper latch apparatus;
- and
- injecting cement through the casing string into an annulus.
3 more elements
A well prepared for cementing, comprising:
- a casing string comprising an upper latch apparatus and a lower latch apparatus;
- a cement valve latched into the lower latch apparatus;
- and
- a second cement valve latched into the upper latch apparatus.
1 more element
Dependencies are inferred from the claim text.