Well shut in device
US9650869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2014 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Apr 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C2201/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An arrangement for extraction of hydrocarbons includes a flow conduit that leads from a subsurface region to an above-surface region. A normally-closed shut-in valve is located in the subsurface region of the flow conduit. A hydraulic system is arranged to cause the shut-in valve to open when the hydraulic system is pressurized. A release valve releases pressure in the hydraulic system. A wireless interface having a unique identifier is adapted to open the release valve on receipt of a wireless communication from a remote device. A plurality of remote devices each include a wireless transmitter that is compatible with the wireless interface and able to transmit control instructions to the wireless interface. At least one control instruction in any sequence of control instructions is issued by the remote device including the unique identifier. The wireless interface is adapted to ignore control instructions containing an identifier differing from the unique identifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.