Drill bit for petroleum and natural gas applications

A technology of drill bits and cutting devices, applied in the directions of drill bits, drilling tools, earth-moving drilling, etc., can solve the problems of reduced drilling efficiency, excessive operating temperature, and increased risk of lateral vibration.

Pending Publication Date: 2022-03-11
SAUDI ARABIAN OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are often associated with one or more significant drawbacks such as reduced drilling efficiency, increased risk of encountering lateral vibrations strong enough to damage one or more components of the drill string, and operating temperatures higher than desired operating temperature

Method used

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  • Drill bit for petroleum and natural gas applications
  • Drill bit for petroleum and natural gas applications
  • Drill bit for petroleum and natural gas applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Figure 1-Figure 3 Shown is a drill bit 100 designed to drill into (eg, one or more of cut, crush, and scrape) a rock formation to produce or further form a wellbore. Drill bit 100 is mounted to the bottom end of drill string 101 and may experience various types of vibrations during operation, including lateral 103 , vertical 105 , and torsional 107 vibrations. Such vibrations may cause mechanical wear of the drill bit 100 as the drill bit 100 impacts the rock formation forcefully.

[0039] The drill bit 100 includes a cutting body 102 and a coupling member 104 (eg, a bit short) that connects the cutting body 102 to a shaft 109 of a drill string 101 . The cutting body 102 is equipped with a plurality of cones 106 (e.g., PDC cones), and the coupling member 104 is equipped with a microelectronic unit 108 that is in electrical communication with the cones 104 and includes a microprocessor and a microcontroller. . The cutting body 102 generally has a length of about 0.26...

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PUM

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Abstract

The drill bit includes a microelectronic unit and a plurality of cutting devices. Each of the plurality of cutting devices includes a cutting layer formed to cut a rock formation and a capacitive sensor disposed adjacent to the cutting layer. The capacitive sensor is configured to generate an electric field across the cutting layer and to transmit a signal corresponding to a voltage associated with the electric field. The microelectronic unit of the drill bit is configured to receive a signal from the capacitive sensor of each of the plurality of cutting devices such that the microelectronic unit receives a plurality of signals, and determine, using the plurality of signals, an indicator of mechanical wear of the drill bit based on a change in voltage associated with the electric field across the cutting layer of each of the plurality of cutting devices.

Description

[0001] priority statement [0002] This application claims priority to U.S. Patent Application No. 16 / 524,883, filed July 29, 2019, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to drill bits that include sensors for real-time monitoring of mechanical wear of the drill bit during drilling operations. Background technique [0004] Drill strings deployed in hard rock formations experience severe shock and vibration during drilling operations. This shock and vibration can lead to premature equipment failure (including, for example, damage to the drill bit carried by the drill string) and to a reduced rate of penetration (ROP) at which the drill bit can break the rock beneath the bit and thus deepen the wellbore. The condition of the drill bit can affect invisible lost time (ILT) and non-productive time (NPT), which constitute a significant portion of the overall cost of a drilling operation. For exam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/50E21B12/02E21B45/00
CPCE21B10/50E21B12/02E21B45/00E21B10/42E21B10/46E21B10/08E21B21/08E21B47/01E21B47/18G01V2210/1216
Inventor 占国栋津塔卡·帕桑·古纳拉特纳李伯东蒂姆西·E·莫里达克
Owner SAUDI ARABIAN OIL CO
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