Downhole displacement impact method and impact drilling tool
US11851952B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2022 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Jul 8, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole displacement impact method and an impact drilling tool are provided, which relates to the field of drilling tools. The downhole displacement impact drilling tool includes a flow passing sleeve, a first main shaft, an impact-bearing seat, and a second main shaft that are all formed by annular structures and are connected in sequence from top to bottom. A vibration sleeve, a vibration starting seat, and an impact head are connected in sequence from top to bottom on the impact-bearing seat. The vibration sleeve is connected and fixed to the impact head through a connecting sleeve. The vibration starting seat synchronously rotates with the impact-bearing seat through a spline connection therebetween. The vibration starting seat generates an up-down periodic displacement along an axial direction of the vibration starting seat during rotating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.