Torsion impact speed acceleration device
US10538968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2018 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | Jul 19, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B4/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present disclosure relates to the technical field of well drilling speed acceleration devices, and particularly to a torsion impact speed acceleration device, comprising: a main body (1), an anvil (2), an impact hammer (3), a conversion member (4), a mandrel (5) and a throttle nozzle (6); an inner limiting boss (7) is provided at an upper inner side of the main body (1), a drainage member (9) is mounted between the inner limiting boss (7) and the anvil (2), and a lower conical annular platform (24) which is a frustum having a wide upper portion and a narrow lower portion is provided at an upper inner side of the throttle nozzle (6). The present disclosure has a reasonable and compact structure and is convenient to be used. During a usage, the present disclosure provides an additional impact force to a PDC drill bit through an impact action on the anvil (2) made by the impact hammer (3), thereby reducing the drill capacity aggregation of the PDC drill bit, preventing the gear tooth breakage of the PDC drill bit occurred during drilling, also preventing the entire drill string from fatigue damage and extending the service life of the PDC drill bit on the condition that the drill …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.