CA2582744C

CA2582744C - Wireless automation systems and processes for wells

Info

Publication number: CA2582744C
Application number: CA 2582744
Authority: CA
Inventors: Larry J. Compton; Lucian Novac; Cham Ocondi; Mark Ocondi
Original assignee: CH2M Hill Inc
Current assignee: Wixxi Technologies LLC
Priority date: 2006-03-21
Filing date: 2007-03-21
Publication date: 2010-07-13
Anticipated expiration: 2027-03-21
Also published as: CA2582744A1

Abstract

This system connects groups of end-devices at two or more automated oil or gas production wellheads or groups of end-devices at two or more associated wellhead facilities so that such associated end devices may be wirelessly monitored and measured during wellhead production, and then wirelessly controlled by one or more master remote terminal/telemetry unit MRTU, Each MRTU is in turn in communication with and controlled by a host computer system. Such measurement and control of the end devices is accomplished through slave remote terminal/telemetry units SRTUs which are connected to and capable of communications with associated end-devices. Each SRTU is in turn connected to one or more local area network LAN communication system, each of which LAN is in turn connected, by hard wire or wirelessly, to a wide area network WAN transmitter Each WAN is in wireless communication with a host computer.

Claims

CLAIMS:

1. Systems for measuring and controlling the production of hydrocarbons at two or more associated automated wellheads, each automated wellhead having two or more (groups of) end-devices, each end device (group) being connected to remote telemetry unit RTU, and each RTU being connected to one or more local area network LAN
communication system, the improvement including:
each remote telemetry unit RTU including computing hardware means and associated software means, each said RTU having means for two way communications with one or more associated end device;
one or more master remote terminal/telemetry unit MRTU, in which each said MRTU includes means for computing and associated software, and also including means for two way communications by hard wire connection or wirelessly with one or more LAN, one or more wide area network WAN communication system, wherein each WAN
is in turn connected by hard wire or wirelessly to at least one said MRTU; and at least one host computer system; whereby each MRTU is in two way wireless communication with and controlled by a said host computer system; and whereby further such associated end devices may be monitored and measured during production by the automated wellhead, and then controlled from virtually any location from one or more host computer system.

2. The measuring and controlling systems of claim 1, wherein at least one RTU
is a slave remote telemetry unit SRTU that is in two way communication with at least one associated end-device, and said SRTU includes means for measuring and controlling said at least one end devices.

3. The measuring and controlling systems of claim 1, wherein said MRTU and SRTU
means for computing and associated software capable of reading associated end-devices, record data produced by each said end device, and trending various analog data and then controlling such associated end devices.

4. The measuring and controlling systems of claim 3, wherein said data read and recorded and controlled by said SRTU includes flow, flow calculation, control of end-devices including pressure transducers, plunger arrival switches, motorized choke valves, and tank level transducers, and wherein such system includes means for uploading and downloading data stored in the SRTU any other from other SRTU and MRTU in the control system through a LAN.

The measuring and controlling systems of claim 1, wherein two or more SRTUs are in communication with one MRTU in a LAN communication system.

6. The measuring and controlling systems claim 5 wherein said SRTUs are designed to operate as a wireless extension of the MRTU with passive I/O (Input/Output) functionality.

7. The measuring and controlling systems of claim 5 wherein each said SRTUs is designed to acts as a stand-alone programmable controller and to monitor and control end-devices directly connected to said SRTU.

8. The measuring and controlling systems claim 5 wherein each said SRTUs is designed to read and store analog data from transducers includes in said end devices and to event log the status of valve position changes and plunger arrival records.

9. The measuring and controlling systems of claim 5 wherein each said SRTUs is designed to wirelessly upload control algorithms from a MRTU and exercise control of the productivity of an associated automated well to affect production optimization.

10. The measuring and controlling systems claim 5 wherein each said SRTUs is designed to wirelessly read and store analog data from transducers that are connected to other SRTUs in the LAN network.

11. The measuring and controlling systems of claim 5 wherein each said SRTUs is designed to store historical trending data and to transfer such data wirelessly between said SRTUs and a MRTU.

12. The measuring and controlling systems claim 5 wherein each said MRTUs is designed to coordinate the control of each associated automated well through two or more associated SRTUs connected together through a wireless system.

13. The system of claim 1 wherein each end device has a unique address and said MRTU is designed to operate as multiple RTUs, including individual automated well communication to each unique devices address and communication protocols which allow said host computer to monitor alarm condition, trending data transfer, and control strategy downloading from tank batteries.

14. The system of claim 1 in which each said MRTU is designed to communicate with a host computer and with other MRTUs in the WAN network.

15. The system of claim 14 said communication of said MRTUs with a host computer and with other MRTUs in the WAN network is wireless.