Stroke actuated well testing tool
US4050512A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Jul 6, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A stroke actuated well testing tool carried by a tubing string and including a packer, radial ports for maximum internal flow past the packer, and a valve controlling flow through the tubing string; the tool further including radial port control assemblies which are relatively movable axially, when the packer and tool are set, to close the radial ports, and valve control assemblies which are relatively movable to open and close the valve; the radial port control assemblies including a fluid flow restrictor to provide a time delay thereby to permit relative movement of the valve control assemblies without operation of the port control assemblies; the tool further including at least one annular sample collecting pressure resistant chamber occupying an open position for receiving well samples when the packer is set and a closed position when the tool is being pulled out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.