Unlock instant, AI-driven research and patent intelligence for your innovation.

Collapsible multi-sized drill bit and method of use

a multi-sized drill and drill bit technology, applied in the field of drilling equipment used in resource drilling, can solve the problems of drilling process cost, drilling process cost, and significant time and labor cost of drill rig operators, and achieve the effect of saving drilling time and labor costs

Inactive Publication Date: 2018-09-20
BURCA DENNIS +1
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a collapsible drill bit for use in formation drilling that includes a retractable portion that can move between an expanded position and a collapsed position. The retractable portion has one or more cutting faces and is moveable using a sufficient force. The bit also includes drill arms that move between a resting position and an activated position. The actuation member, which is disposed within the body of the bit, includes one or more shoulders that define a diameter greater than the diameter on either side of the shoulder. When the sufficient force is applied, the shoulder is moved into contact with the drill arms and the drill arms extend away from the body. The invention also includes a method of formation drilling using a multi-sized drill bit that connects to a drill string and includes a retractable cutting blade.

Problems solved by technology

There is considerable expense and time expended to remove an entire drill string out of the hole, replacing the drill bit and then placing the entire drill string back down the hole to continue drilling.
This change out of the drill bits from a larger diameter to a smaller diameter can cost a significant amount of time to drill rig operators and expense to the drilling process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Collapsible multi-sized drill bit and method of use
  • Collapsible multi-sized drill bit and method of use
  • Collapsible multi-sized drill bit and method of use

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0069]The present invention relates to a collapsible drill bit 100 and its method of use. The collapsible drill 100 according to the present invention is shown in the drawings and by way of example only and with reference to a first embodiment which is shown in FIGS. 1 through 4. Collapsible drill bit 100 comprises a main body 102, a primary bit 104, cutting face 103 and cutting blades 105 located at a front end 108, a plurality of retractable blades 106 located on cutting face 111, female connection 114 for connecting to a drill string (not shown) located at a rear end 110, and one or more nozzles 112 for delivering one or more fluids.

[0070]As shown in FIG. 1, primary multi-blade bit 104 comprise polycrystalline diamond compact (PDC) cutters. However, primary multi-blade bit 104 could also be a roller cone, diamond impregnated, and / or carbide bit. Primary bit 104 may be rigidly attached to main body 102 or may be replaceable via a connection system to main body 102. While primary b...

example 1 (

[0114well clean out application). Drill inside of larger diameter casing. Arrive at liner hanger. Collapse retractable blades 106 by dropping a first ball 915 having a first diameter into the channel 1101. Continue drilling using the primary bit 104 through production casing wherein the size of the bore is substantially equal to the diameter of the primary bit 104. At the desired depth, the scraper blades 1130 are activated by dropping a second ball 1115 having a second diameter greater than the first diameter of the first ball 915 into the channel 1101. Simultaneously retrieve bit and scrape production casing hole to desired reaming size using the scraper blades 1130.

example 2 (

[0115maintain hole gauges size despite continuous bit wear): Drill large diameter hole for surface casing, collapse retractable blade 106 and continue to drill production casing hole size using the primary bit 104. Activate reamers 1130 to maintain hole gauge at desired depth. This is particularly useful in situations when the primary bit wear results in a smaller than derived diameter hole. The reamer is able to compensate for the undersize primary bit.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a collapsible drill bit for use in formation drilling and a method of formation drilling. The drill bit includes a main body having a first cutting diameter and includes a front end with a cutting face supporting one or more cutting elements and a rear end configured to operatively connect to a drill string. The drill bit also includes a retractable portion between the front end and the rear end, the retractable portion including at least one cutting face supporting one or more cutting elements, the retractable portion configured to move between an expanded position in which the retractable portion has a second cutting diameter and a collapsed position in which the retractable portion has a diameter less than or equal to the first cutting diameter. Wherein the retractable portion is caused to move into the collapsed position upon an application of a sufficient force.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional application No. 62 / 470,965 filed Mar. 14, 2017 and entitled COLLASPIBLE MULTI-SIZED DRILL BIT AND METHOD OF USE, which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present concept relates to equipment used in resource drilling and more particularly relates to collapsible multi-sized drill bits and their method of use in oil and resource drilling.BACKGROUND OF THE INVENTION[0003]In resource drilling operations, it is often, the case that one begins drilling at a larger diameter and then once a certain depth has been reached, drilling then continues on at a smaller diameter. In open hole formation drilling for example, one may begin drilling at a larger diameter until a certain depth has been reached. Once that depth has been reached, the entire drill string must then be stripped out of the hole and the drill bit changed to a smaller diameter drill bit. Then the ent...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E21B10/64E21B10/46
CPCE21B10/64E21B10/46E21B10/003E21B10/322E21B10/62E21B29/00E21B29/005E21B29/007E21B29/002
Inventor BURCA, DENNISMARZOUK, SAID
Owner BURCA DENNIS