Back to results
US 12,065,883 B2Granted
Hybrid bit
AssigneeSchlumberger Technology Corporation
InventorsScott D. McDonough, Venkatesh Karuppiah, Mahesha Kumar, Shelton Alsup
Life of this patent
Estimating the term…
Abstract
A hybrid bit includes fixed blades and wheel support structures. The wheel support structure includes a wheel inserted into a slot between a leading support and a trailing support. One or more shims fill a gap between a flange and the leading supports. An elongated seal between the wheel and the supports is provided to seal the wheel support.
Claims19
A method for manufacturing a bit, comprising:
- providing a bit body, the bit body including a fixed blade and a wheel support structure, the wheel support structure defining a wheel slot;
- providing a wheel, the wheel including a plurality of cutting elements;
- inserting a first flange into the wheel support structure;
- inserting the wheel into the wheel slot;
- with the wheel in the wheel slot, measuring a separation distance between the first flange and the wheel support structure;
- removing the wheel from the wheel slot and the first flange from the wheel support structure;
- adding at least one shim to the wheel support structure, the at least one shim having a shim width less than or equal to the separation distance;
- and
- after adding the at least one shim, inserting the first flange into the wheel support structure and the wheel into the wheel slot.
6 more elements
A hybrid bit, comprising
- a plurality of fixed blades;
- a first support including a first journal bore;
- a second support including a second journal bore, the first journal bore being aligned with the second journal bore, wherein the first support and the second support define a wheel slot;
- a slot base extending to a central nozzle in the wheel slot, wherein the central nozzle is disposed at a bit axis of the hybrid bit;
- a first flange inserted into the first journal bore;
- a shim between the first flange and the first journal bore;
- a wheel located between the first support and the second support, the wheel including a seal gland;
- and
- an elongated seal located in the seal gland.
6 more elements
A hybrid bit, comprising:
- a plurality of fixed blades;
- a first support including a first journal bore;
- a second support including a second journal bore, the first journal bore being aligned with the second journal bore, the first support and the second support defining a wheel slot;
- a wheel located between the first support and the second support in the wheel slot, wherein the wheel comprises a cutting element, the cutting element having a tip;
- and
- a slot base extending to a central nozzle in the wheel slot, wherein the slot base is offset from the tip of the cutting element with an offset of less than 0.50 in. (12.7 mm), wherein, at a central nozzle, the wheel slot has a wheel slot depth that is greater than or equal to a wheel diameter of the wheel.
3 more elements
Dependencies are inferred from the claim text.