The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2025
Filed:
Feb. 02, 2024
Halliburton Energy Services, Inc., Houston, TX (US);
Shobeir Pirayeh Gar, Houston, TX (US);
Lonnie Carl Helms, Houston, TX (US);
Gavin Graff, Golden, CO (US);
Ricky Layne Covington, Marlow, OK (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
A wiper dart having a bi-diameter wiper cup can be used to help track the location of the dart in a pipe string. As the wiper dart is pumped through the pipe string, a first mean pump pressure will exist as the wiper cup travels through drill pipe sections having a larger inner diameter than a tool joint and a second mean pump pressure will exist as the wiper cup travels through the tool joints. The wiper cup can have a geometric shape selected such that a detectable pressure spike can be observed when the wiper cup reaches a transition section located between one end of a pipe section and the tool joint. By counting the number of pressure spikes, an operator can accurately track the location of the wiper dart as it is being pumped through the pipe string.