Battery type motor-driven double-speed PDC (polycrystalline diamond compact) drill bit

A technology driven by motors and batteries, which is applied to drill bits, drilling equipment, earthwork drilling and production, etc. It can solve the problem of low ROP and achieve the effect of compact and reasonable structure and improved ROP

Active Publication Date: 2019-06-21
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the mechanical drilling speed in

Method used

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  • Battery type motor-driven double-speed PDC (polycrystalline diamond compact) drill bit
  • Battery type motor-driven double-speed PDC (polycrystalline diamond compact) drill bit
  • Battery type motor-driven double-speed PDC (polycrystalline diamond compact) drill bit

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing:

[0017] According to the accompanying drawings, the two-speed PDC drill bit driven by a battery-type motor consists of an upper joint (1), a battery holder (2), a sealing ring (3), a battery (4), a battery protection cover (5), and a battery wire ( 6), small spring (7), conductive slip ring (8), Y-shaped sealing ring Ⅰ (9), Y-shaped sealing ring Ⅱ (10), motor wire (11), large spring (12), motor (13) , the extension big drill bit (14), the motor rotating shaft joint (15), the diversion joint (16), the Y-shaped sealing ring III (17), and the center small drill bit (18); It is characterized in that: the assembly sequence is that the Y-shaped Pack the seal ring III (17) and the motor lead (11) into the large extension drill bit (14); install the motor shaft joint (15) on the rotating shaft of the motor (13), connect the diversion joint (16), and put it into the large extension d...

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Abstract

The invention discloses a battery type motor-driven double-speed PDC (polycrystalline diamond compact) drill bit. The battery type motor-driven double-speed PDC (polycrystalline diamond compact) drillbit mainly comprises an upper joint, a battery rack, a battery, a battery protection cover, a conductive slip ring, a Y-shaped sealing ring I, a motor wire, a large spring, a motor, an epitaxial large drill bit body, a flow guide joint, a center small drill bit body and the like; the assembling sequence is as follows: a motor rotating shaft joint and the flow guide joint are arranged on a rotating shaft of the motor at first and are integrally arranged into the epitaxial large drill bit body provided with a Y-shaped sealing ring III and the motor wire, and the large spring is arranged inside;the battery wire, the battery, a sealing ring, the battery protection cover, small springs, the Y-shaped sealing ring I, the conductive slip ring and a Y-shaped sealing ring II are arranged in the battery rack separately, and the overall assembled battery rack and the epitaxial large drill bit body are assembled together; and the upper joint and the center small drill bit body are assembled. Thebattery type motor-driven double-speed PDC (polycrystalline diamond compact) drill bit controls a motor switch through drilling fluid, has the motor-driven and drill column-driven double-speed drilling characteristic and has the advantage of be ing capable of increasing the mechanical drilling speed.

Description

technical field [0001] The invention belongs to the field of oil and natural gas exploitation, and in particular relates to the design of a two-speed PDC drill bit driven by a battery type motor. Background technique [0002] With the deepening of exploration and development of oil and gas resources, there are more and more deep wells, ultra-deep wells and new oil and gas resource wells, and it is possible to encounter "three high formations" (high rock hardness, high rock drillability value, and high abrasiveness) In the process of drilling and breaking rocks with traditional PDC bits, the low rock breaking efficiency at the core is an important factor restricting the ROP. The main reason for the low rock breaking efficiency of the core is the low movement speed of the cutting teeth in the core of the wellbore during the rock breaking process, which causes the core of the drill bit to be "topped" by the rock during the drilling process, and the rock in the center of the bor...

Claims

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Application Information

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IPC IPC(8): E21B10/60E21B10/00
Inventor 田家林胡志超葛桐旭刘刚刘亚迪宋豪林
Owner SOUTHWEST PETROLEUM UNIV
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