Patent application number | Description | Published |
20090095537 | SYSTEM, METHOD, AND APPARATUS FOR VARIABLE JUNK SLOT DEPTH IN DRILL BIT BODY TO ALLEVIATE BALLING - An earth boring drill bit design for alleviating balling varies the junk slot depth in junk slots subject to balling from the other junk slots. Using variable depth bit bodies enhances the hydraulic characteristics of the bit as well as assists in the placement of the nozzles for machining purposes. This flexibility optimizes the area changes along the ducts required by the bit's operation. | 04-16-2009 |
20100155150 | Cutting Removal System for PDC Drill Bits - The blades of a PDC bit have a nozzle between them preferably oriented laterally across the plane of the cutters on the blade and more preferably in a trough disposed adjacent the row of cutters. The cutting is less likely to adhere to the bit surface because the trough abruptly spaces back the bit surface and the spray being oriented radially preferably into the trough gets between the bit surface and the cutting before it can adhere to the bit surface using the fluid energy to drive the cutting into the junk slot. | 06-24-2010 |
20100163310 | METHOD OF MANUFACTURING AND REPAIRING FIXED-CUTTER DRAG-TYPE ROTARY TOOLS WITH CUTTING CONTROL STRUCTURES - A rotary tool for drilling subterranean material is disclosed. The rotary tool includes a tool body having a distal crown end comprising a circumferential series of raised cutting blades with recessed junk slots therebetween. Cutting elements are located proximate a leading peripheral edge of the raised cutting blades and cutting control structures are located interiorly of the cutting elements at a leading surface of an adjacent junk slot. Cutting control structures are releasably secured to the tool body in the adjacent junk slot whereby a used rotary tool is refurbishable by removing worn cutting control structures without degradation to the tool body and replacing the worn cutting control structures by installing new cutting control structures in the worn cutting control structures' locations. | 07-01-2010 |
20100224419 | DRILL BIT WITH INTEGRAL CUTTINGS SPLITTER AND METHOD OF MAKING - Disclosed herein is a downhole drill bit. The drill bit includes, a body, a plurality of cutters attached to the body, and at least one splitter that is integrally formed in the body is in operable communication with at least one of the plurality of cutters such that the splitter bifurcates cuttings cut by the at least one cutter. | 09-09-2010 |
20100270078 | METHOD AND APPARATUS TO THWART BIT BALLING OF DRILL BITS - Disclosed herein is a drill bit. The drill bit includes, a body of the drill bit having at least two blades defining a junk slot therebetween, at least one cutter positioned on at least one of the at least two blades, and at least one diverter positioned downstream of the at least one cutter defined by a direction of travel of the cuttings, the at least one diverter configured to divert cuttings to travel along a trajectory more parallel to a profile of the junk slot. | 10-28-2010 |
20100270087 | DRILL BIT WITH PREFABRICATED CUTTINGS SPLITTER AND METHOD OF MAKING - Disclosed herein is a method of making a drill bit for drilling subterranean formations. The method includes, forming a bit mold having at least one recess receptive of a distal portion of a prefabricated splitter, positioning the distal portion into one of the at least one recess, and filling the bit mold with at least one material. | 10-28-2010 |
20110210474 | DRILL BIT WITH INTEGRAL CUTTINGS SPLITTER AND METHOD OF MAKING - A method of making a drill bit for drilling subterranean formations includes, forming a bit mold defining the drill bit to include at least one recess defining at least one splitter, and filling the bit mold with at least one material. | 09-01-2011 |
20110220312 | DRILL BIT WITH PREFABRICATED CUTTINGS SPLITTER AND METHOD OF MAKING - A method of making a drill bit for drilling subterranean formations includes, forming a bit mold having at least one recess receptive of a distal portion of a prefabricated splitter, positioning the distal portion into one of the at least one recess, and filling the bit mold with at least one material. | 09-15-2011 |