Jon R Rasmussen

US Patent:

20230115354, Apr 13, 2023

Filed:

Jun 22, 2022

Appl. No.:

17/846932

Inventors:

Jon Randall Rasmussen - Williston ND, US
Brandon J. Fair - Queen Creek AZ, US

International Classification:

E21B 29/04
E21B 29/00

Abstract:

A wireline cutting tool. The wireline cutting tool comprises an elongated tubular body. A knife housing resides within the tubular body proximate an upper end, while a plunger resides within the tubular body proximate a lower end. An electric wireline passes through a bore of the knife housing and the plunger en route to an electrical connection sub. The electrical connection sub includes a pin that transmits signals from the electric wireline down to a downhole tool. The plunger is configured to slide up the bore of the lower sub in response to a first upward shear load applied by the wireline. This causes the plunger to act against knives residing within the knife housing. The knives are configured to travel up the bore of the upper sub in response to a second upward shear load applied by the plunger, pinching the wireline until severed. The second shear load is greater than the first shear load, creating a two-stage cutting tool.

US Patent:

20230101912, Mar 30, 2023

Filed:

Aug 19, 2022

Appl. No.:

17/821148

Inventors:

Jon Randall Rasmussen - Williston ND, US
Brandon J. Fair - Queen Creek AZ, US

International Classification:

E21B 29/04

Abstract:

An electrical connection assembly for a wireline cutting tool. The electrical connection assembly comprises an electrical connection sub having an upstream end and a downstream end. A pin connector resides within a bore of the electrical connection sub, with the pin connector having a conductive pin. The electrical connection assembly also includes a signal line connector. The signal line connector extends from an upstream end of the electrical connection sub and is in electrical communication with an electric wireline within a wellbore. The signal line connector places the electric wireline in electrical communication with a signal line further downhole. The signal line is associated with a downhole tool. A downstream end of the conductive pin is connected to the signal line. The electrical connection assembly also includes a spring that is wound around the pin and which biases the conductive pin out of a bore of the downstream end of the electrical connection sub.