Coiled tubing joint locator and methods
US5626192A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1996 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Feb 20, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/092
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well pipe string joint locator for attachment to the end of a length of coiled tubing and moved within the pipe string as the coiled tubing is lowered or raised therein is provided as well as methods of using the joint locator. The joint locator is comprised of an elongated tubular housing having a longitudinal fluid flow passageway therethrough and having at least one lateral port extending through a side thereof. Electronic means are disposed within the housing for detecting the increased mass of a pipe joint as said locator is moved through the joint and generating a momentary electric output signal in response thereto. Valve means are disposed within the housing responsive to the electric signal for momentarily opening or closing the lateral port of the housing to thereby create a surface detectible pressure drop or rise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.