Invention Grant
- Patent Title: Wiper dart with reinforced drive element
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Application No.: US16091426Application Date: 2016-05-16
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Publication No.: US10767440B2Publication Date: 2020-09-08
- Inventor: Todd Anthony Stair , Gary Joe Makowiecki , Carlos Alejandro Valdez
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: Gilliam IP PLLC
- International Application: PCT/US2016/032632 WO 20160516
- International Announcement: WO2017/200513 WO 20171123
- Main IPC: E21B33/126
- IPC: E21B33/126 ; E21B37/10 ; E21B33/16 ; E21B33/14

Abstract:
A wiper dart includes one or more wiper elements disposed about a mandrel, each wiper element comprising a wiper cup that extends radially outward and rearwardly relative to the mandrel, and a nose assembly coupled to the mandrel. A drive element is disposed about the mandrel and includes a shoe and a cup coupled to the shoe. The cup extends radially outward and rearwardly from the shoe and exhibits a maximum diameter less than or equal to a maximum diameter of the one or more wiper elements, and the shoe provides at least one of axial and radial support to the cup.
Public/Granted literature
- US20190128087A1 WIPER DART WITH REINFORCED DRIVE ELEMENT Public/Granted day:2019-05-02
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