US 12,258,831 B1
Down-hole extended reach tool generating variable shock wave amplitudes
Martin Mauro Nebiolo, Neuquen Capital (AR); Christian Brendstrup, Neuquen Capital (AR); Christian Cerne, Spring, TX (US); and Gustavo Dietrich, Neuquen Capital (AR)
Assigned to PROSHALE LLC, Spring, TX (US)
Filed by Proshale LLC, Spring, TX (US)
Filed on Aug. 11, 2024, as Appl. No. 18/800,101.
Application 18/800,101 is a continuation of application No. 18/385,419, filed on Oct. 31, 2023, granted, now 12,152,454.
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 34/10 (2006.01); E21B 31/00 (2006.01)
CPC E21B 31/005 (2013.01) [E21B 34/10 (2013.01); E21B 2200/05 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A fluid-driven multi-mode vibration tool operable by interrupting and then reinstating the flow of pressurized fluid the tool, and wherein interrupting and then reinstating the flow of pressurized fluid opens different fluid ejection paths through the tool while blocking others, comprising:
a central bore of the tool housing a shaft, said shaft having at least three pairs of opposed fluid ejection paths extending through it, each of said opposed ejection paths having an entrance and an exit, and
the exits of said first pair of opposed ejection paths access a first pair of opposed exit ports on circumference of the tool,
the exits of said second pair of opposed ejection paths access the central bore, and
the exits of said third pair of opposed ejection paths access a second pair of opposed exit ports on circumference of the tool;
a rotatable slot piston above the shaft and engaged with a ratchet assembly, said ratchet assembly mounted within the tool and having a zig zag path defining a series of peaks and valleys within the central bore;
said slot piston having one or more blocked and one or more unblocked flow paths extending through it and said slot piston being engaged with the ratchet assembly such that axial movement of the slot piston causes movement to the next peak or valley in the zig zag path; and wherein, each blocked and each unblocked flow path has an entrance and an exit, and wherein the exit of each blocked and each unblocked flow path can align with an entrance of said opposed ejection paths, and wherein the exit of each blocked flow path includes a seal which can seal the entrance to said opposed ejection paths when blocked exits of the slot piston are adjacent the shaft.