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Drill bit with prefabricated cuttings splitter and method of making

a cutting and splitter technology, applied in the field of hydrocarbon drilling industry, can solve problems such as affecting and achieve the effect of improving the penetration rate of drilling operations

Inactive Publication Date: 2011-09-15
BAKER HUGHES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method for making a drill bit for drilling underground formations. The method involves creating a mold for the bit and then filling it with material. The bit also includes a prefabricated splitter that is positioned within the mold and extends out of the bit. This splitter helps to bifurcate the cuttings that are cut by the bit's cutters. The technical effect of this invention is to improve the performance of drill bits in drilling subterranean formations.

Problems solved by technology

Cuttings, however, can be of a size that they become lodged in the junk slots thereby blocking the junk slots and detrimentally affecting a rate of penetration of the drilling operation.

Method used

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  • Drill bit with prefabricated cuttings splitter and method of making
  • Drill bit with prefabricated cuttings splitter and method of making
  • Drill bit with prefabricated cuttings splitter and method of making

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Embodiment Construction

[0013]A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.

[0014]Referring to FIG. 1, an embodiment of a downhole drill bit 10 disclosed herein is illustrated. The drill bit 10 includes, a body 14 with a prefabricated cuttings splitter 18 and a plurality of cutters 22 attached thereto. The prefabricated splitter 18 is insert molded into the body 14 as will be described in detail with reference to FIGS. 3-5 below. The prefabricated splitter 18 is configured to bifurcate cuttings, or chips, that are cut from a formation by a cutter 22A. By bifurcating the cuttings into smaller pieces, junk slots positioned between perimetrically adjacent blades 26 of the body 14 are less likely to become blocked or plugged. The prefabricated splitter 18 has a splitter edge 30 defined by an intersection between surfaces 34 and 38. The surfaces 34 and 38 of this embodiment a...

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Abstract

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.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional application of U.S. patent application Ser. No. 12 / 427,980, filed Apr. 22, 2009, the entire contents of which are incorporated herein by reference.BACKGROUND[0002]In the hydrocarbon drilling industry, rotary drill bits that drill into subterranean formations form cuttings that are carried away with drilling fluid that is pumped through the drill bit. Junk slots are provided in the drill bit to permit passage therethrough of the drilling fluid and the cuttings carried therewith. Cuttings, however, can be of a size that they become lodged in the junk slots thereby blocking the junk slots and detrimentally affecting a rate of penetration of the drilling operation. Systems and methods to lessen occurrences of these conditions are well received in the art.BRIEF DESCRIPTION[0003]Disclosed herein is a method of making a drill bit for drilling subterranean formations. The method includes, forming a bit mold having...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B22D19/00B22C9/00
CPCE21B10/43E21B10/55
Inventor MARVEL, TIMOTHY K.WELLS, MICHAEL R.
Owner BAKER HUGHES INC