wft143295

Production optimization

Artificial liftControl systemsFlow measurementReservoir monitoringSoftwareSubsea production

– Subsea production control and monitoring – Topside communication equipment – Subsea open communication hubs – Subsea intelligence – Software solutions – Intervention solutions/test equipment/workover

control systems (WOCS)

Completion

Production

Intervention

Drilling

Evaluation

Subsea Production Solutions

Open systems for control, monitoring and analysis

© 2010 Weatherford. All rights reserved.2


The quality you have come to expect from Weatherford coupled with experience, reliability and technical innovation brings you the tools, expertise and systems approach to make it all happen on your timeline.

We understand that dealing with subsea issues can be time consuming, expensive and demanding. Getting what you want, how you want it, in a reasonable time frame should be the norm, not an unexpected surprise. Weatherford has addressed these subsea issues by providing reliable equipment, innovative and flexible technology, and dedicated service at reasonable cost for individual products and services as well as complete production systems. Weatherford’s subsea control system group is an independent operation within Weatherford that is able to take advantage of the extensive resources that a large corporation provides. Creating a small company identity within a large enterprise means you can count on focused attention, unique adaptability, unmatched affordability and accommodating solutions without concerns over the resource constraints of your supplier.

Overview

Weatherford provides flexibility in all aspects of design. A mechanical interface and individual designs provide an open system for current and future needs that can be used with any subsea tree. Our fully transparent, multi-channel communications and state-of-the-art production optimization software are adaptable to meet your specific requirements.

Our flexibility is the result of our unique approach to manufacturing the full subsea control system without the use of subcontractors and the development of partnerships with our customers to provide exactly what is needed, at the right price, with prompt deliveries that meet even the tightest development schedules.

With extensive control- and data-module installations worldwide, and over a million subsea-production operating hours to date, Weatherford subsea production solutions is an industry-leading, independent subsea controls company with a proven record of reliability and quality.

Using our fully open architecture approach, third-party devices—such as multiphase flowmeters—are seamlessly integrated as part of the initial control system, or retrofitted through our open-communications hub (OCH).

This system extends and optimizes the available communication bandwidth capability without the need for specially written proprietary software to implement the system solution.

© 2010 Weatherford. All rights reserved. 3


Why Weatherford?

Weatherford’s new approach combines both established and cutting-edge technologies. Our open-communications controller (OCC) system is able to connect to all subsea trees, instruments and peripheral devices. When combined with off-the-shelf software tools the OCC system provides the ability to monitor, operate and optimize the production of your subsea wells.

Standardizing with Weatherford’s open system can provide you with many benefits:

• Your system is not tied down to one subsea tree manufacturer or instrument supplier.

• New technologies are easily added to the system.

• Systems can be delivered sooner rather than later with accelerated delivery schedules.

• All data are passed seamlessly to multiple production optimization applications.

• Greater visibility throughout the system.

• Advanced pressure, temperature, flow and water-cut measurements are available.

• Communications can coexist with legacy or non-Weatherford systems without interference.

• Greenfield sites can be designed with an open-system architecture that facilitates future field expansion, compatibility with vendors and introduction to new technologies.

• Brownfield sites can be retrofitted with new technologies without replacing the existing infrastructure or equipment.

Subsea control system communications are provided using separate power and communications, fiber optics, or communications on power using the open communications controller.


Open subsea production solution

Communicates with all:

• Major tree manufacturers

• Gauges

• Sensors

• Topside equipment



Components

Weatherford subsea solutions can be designed as a comprehensive system or with customized modules tailored to fit your specific application and production issues.

There are six key product components that may be combined to form the solution:

• Subsea production control and monitoring: Includes hydraulic power unit (HPU), topside umbilical termination unit (TUTU), master control station (MCS)/electrical power unit (EPU), subsea umbilical termination assembly (SUTA), subsea control module (SCM), subsea accumulator module (SAM) and a variety of distribution equipment.

• Topside communication equipment: Includes the OCC system, engineering workstation, alarm and remote-access facilities.

• Subsea OCH: Provides high-speed data monitoring and multi-channel access to multiple subsea instruments.

• Subsea intelligence: Includes subsea flow solutions, gauges and sensors, and subsea high-quality video (leak detection).

• Software solutions: Designed for production optimization and flow assurance.

• Intervention solutions, test equipment, workover control system (WOCS)


Open subsea production control

Control system

Weatherford’s electro-hydraulic subsea control system is a modular design concept that incorporates established technology and qualified components to minimize capital and operating expenditures. The system interfaces with all major tree manufacturers and adapts to the specific requirements of the client and the project.

The modular and adaptable design of the subsea control system provides the flexibility to meet any specific project requirements and incorporates established, field-proven technology to minimize capital and operating expenditures. The subsea control system is effective in shallow or deep water up to 10,000 ft (3,000 m), and can be supplied to suit diver and ROV installations.

With its proven record of operation and ability to interface to any subsea tree, the Weatherford subsea control system can be supplied to meet the most demanding, fast-track delivery schedules.

Standard functions/features

• Up to four high-pressure (HP) hydraulic outputs

• Up to 22 low-pressure (LP) hydraulic outputs

• Dual HP and LP hydraulic inputs

• HP and LP emergency shutdown (ESD) valve

• Directly mounted directional control valves to a single manifold block

• HP and LP vents to sea or closed-loop returns

Mechanical

The SCM housing is filled with dielectric fluid prior to installation and is pressure-compensated to safeguard against over or under

pressurization. The SCM housing is made of structural steel, manufactured to BS EN 10 025 Grade Fe430C or Fe510 D1. All hydraulic and electric couplings are manufactured from 316 stainless steel or better.

Valves held open electrically can be mounted in this unit for ESD system functionality if required. Individual HP and LP hydraulic-supply filters are mounted within the control module, maintaining fluid-cleanliness specifications.

Both hydraulic supplies have pressure transducers that indicate system pressure within the control module.



The tree-valve hydraulic-actuator-inferred status is detected by individual pressure transducers, integral to the directional control valves which relay the function-line pressures topside and can be displayed on the MCS screen and made available to the distributed-control system (DCS)/platform-control system.

Electronics

The subsea electronics module (SEM) is located in the main SCM housing and can be installed in two ways; as either a single- or dual-redundant unit, or as two units that provide redundancy in hot-standby configuration. The electronics are housed in a one-atmosphere, dry-nitrogen-purged environment and can include third-party interface cards as required.

Various communications options can be implemented to include: comms-on-power, separate comms-and-power or fiber optic. A configurable-frequency band of operation (50 to 690 kHz) enables high-speed power-line communication and the ability to coexist with other manufacturers’ equipment. Topside and subsea interfaces include full intelligent well interface standardization (IWIS) specification, Profibus, CANbus, MODBUS®, RS422/RS485/RS232 and Ethernet.

Other subsea system equipment

By manufacturing all components of the subsea control system in-house—including SCM, HPU, MCS, TUTU, SUTU, subsea distribution units (SDU) and SAM—Weatherford has the freedom to adapt its standard products to meet the unique criteria of any project without the issues faced with subcontractor inflexibility.

MODBUS is a registered trademark of Schneider Automation.

Subsea electronics module with open-communication controller.


Topside communication equipment

Open-database management

The subsea production system supports open-database standards. The topside information and control system (TIACS) provides the interface for applications to talk directly to end devices. The open-database structure allows the dissemination of data from all subsea devices to real-time, operational and historical databases. Manual user input data is also supported both to historical storage and expert functionality, such as mathematical modeling and optimization.

Topside information and control system

Weatherford’s TIACS provides an open system that performs data collection, storage, presentation, aggregation and expert functionality. New installations are merely a matter of configuration since the software already supports a wide range of interfaces. Supporting all major supervisory control and data-acquisition (SCADA) systems, the TIACS uses one common infrastructure to integrate all downhole/subsea equipment. This common infrastructure supports:

• OPC-DA

• OPC-UA

• OPC-HDA

• Aspen InfoPlus.21® (IP21) through Aspen CIM-IO™

• SQL Server™/Oracle®

• Generic PLCs/RTUs

• MODBUS

• Production Mark-up Language (PRODML™)

• Wellsite Information Transfer Standard Mark-up Language (WITSML™)

• Additional interfaces are fully supported

IP21 and CIM-IO are either registered trademarks or trademarks of AspenTech.Microsoft and SQL Server are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.Oracle is a registered trademark of Oracle Corporation.PRODML and WITSML are trademarks of Energistics.

Master control station.



Communications

Topside DCS and third-party interfaces:

• Serial, Ethernet and fiber-optic solutions with a full range of standard industry protocols available

Subsea interfaces:

• Transparent RS422/RS485/RS232 and Ethernet connectivity

• Profibus, CANbus and MODBUS RTU and TCP implemented

• Full IWIS compliant interface

• Fiber optics


Open communications

Subsea Video

Configuration Tool Trend Display

RedundantOCC

SDAP DataAnalysis Platform

SCADA/MCS

OPC Server

Database

AnalyticalTools

Downhole/SubseaVendor Tool

PLC

Topside Subsea

Power Line Data Transmission Rate1 to 390 kbps or 1 Gbps Distribution

and Ethernet 10/100 Mbps on Fiber Optic

Communications andPower Umbilical

Redundant Path

Serial server mode allowstransparent communications

between any topside andsubsea interface

(i.e. Ethernet to serial orRS232 to RS4XX, etc.)

Multiple Nodes withMultidrop Capability

Modbus

Ethernet

IWIS

SIIS

Subsea RetrofitModule(s)

Subsea Controllers

Gauges and Sensors

Flowmeters

Video Surveillance

Sand Detection

Monitoring

RS422/RS232

PROFIBUS

4 to 20 mA

Modbus

Ethernet

IWIS

SIIS

Subsea ControlModule(s)

Tree Instrumentation

Downhole Gauges

Gauges and Sensors

Flowmeters

Sand Detection

Monitoring

Inter

faces

TIACS Software Suite

MODBUS RTU / TCPOPC ServerSQL ServerODBC / ADOAspentech IP.21Simatic S5 / S7Serial Interface (RS232/RS485/RS422)

Ethernet

Switch or Hub

Modbus/TCPon Ethernet

RS232

RS4XX#1RS4XX#2

RS232

Profibus

RS485

RS232

Modbus Gateway

Serial Server

IWIS / EthernetRouter / Bridge

RS232

RS4XX#1

Modbus/RTU onRS485

RS4XX#2

RS232

PPP

Ethernet

IWIS

Profibus

RS485

RS232

Modbus Gateway

Serial Server


Ethernet

Switch or Hub

The subsea production system provides subsea communication through an industry-proven OCC, which is protocol independent and supports many interface standards including RS422/RS485/RS232 and Ethernet. The system also complies with other open standards such as IWIS, transmission-control protocol/internet protocol (TCP/IP), MODBUS, MODBUS TCP, and PRODML. Typically, communication is through the power line and is available to all channels and devices installed in the wells or on the seabed. The OCC is protocol independent and transmits each protocol transparently. This allows third-party surface applications to directly communicate with their instruments using their native format. The system’s architecture allows any port at topside to be connected to any port subsea–even Ethernet to serial. This flexibility provides a multitude of combinations of connectivity between topside and subsea.



Subsea Video

Configuration Tool Trend Display

RedundantOCC

SDAP DataAnalysis Platform

SCADA/MCS

OPC Server

Database

AnalyticalTools

Downhole/SubseaVendor Tool

PLC

Topside Subsea

Power Line Data Transmission Rate1 to 390 kbps or 1 Gbps Distribution

and Ethernet 10/100 Mbps on Fiber Optic

Communications andPower Umbilical

Redundant Path

Serial server mode allowstransparent communications

between any topside andsubsea interface

(i.e. Ethernet to serial orRS232 to RS4XX, etc.)

Multiple Nodes withMultidrop Capability

Modbus

Ethernet

IWIS

SIIS

Subsea RetrofitModule(s)

Subsea Controllers

Gauges and Sensors

Flowmeters

Video Surveillance

Sand Detection

Monitoring

RS422/RS232

PROFIBUS

4 to 20 mA

Modbus

Ethernet

IWIS

SIIS

Subsea ControlModule(s)

Tree Instrumentation

Downhole Gauges

Gauges and Sensors

Flowmeters

Sand Detection

Monitoring

Inter

faces

TIACS Software Suite

MODBUS RTU / TCPOPC ServerSQL ServerODBC / ADOAspentech IP.21Simatic S5 / S7Serial Interface (RS232/RS485/RS422)

Ethernet

Switch or Hub

Modbus/TCPon Ethernet

RS232

RS4XX#1RS4XX#2

RS232

Profibus

RS485

RS232

Modbus Gateway

Serial Server


RS232

RS4XX#1

Modbus/RTU onRS485

RS4XX#2

RS232

PPP

Ethernet

IWIS

Profibus

RS485

RS232

Modbus Gateway

Serial Server


Ethernet

Switch or Hub

Open-communication controller

The OCC provides the electrical and communications interface to the umbilical power line. Communication between the subsea network and surface equipment can be through power lines or optical cable using IWIS/RS422 or Ethernet. Interfaces to subsea devices include Fieldbus (MODBUS, PROFIBUS and CANbus), Intelligent Information Systems (IIS), optical sensors, custom RS422/RS485/RS232 and vendor specified. The controller is fully customizable and user-specific features can be embedded into the firmware. The OCC contains a built-in web server for setting parameters, diagnostics and firmware upgrades. A single topside unit can communicate with multiple subsea units all sharing a single power cable for communication (multidrop). The OCC provides multiple layers of communication and diagnostics as illustrated below.

Dia

gnos

tics

4 to 20 mA

Con

trol

Modbus

IWIS-SIIS

TCP/IP Ethernet

RS 422/RS485/RS232

Power line modem Fiber-optic modem

Retrofit capability

The open architecture of the OCC enables the system to share an existing subsea network. In most cases this enables installation of new technology instrumentation without having to replace the existing subsea infrastructure.


Subsea intelligence

Subsea flow measurement

The Red Eye® subsea water-cut meter provides an economic way to measure water cut in a multiphase stream from each well. Extremely sensitive to water, it can be used to detect water breakthrough in real time. It also measures typical hydrate-inhibitor concentrations relative to water, and can be used in conjunction with flow-assurance software to optimize inhibitor treatment.

Features

• Rated for shallow and deepwater applications

• Advanced near-infrared technology

• Approved for well environments up to 15,000 psi (1,000 bar) and 392°F (200°C)

• Salinity independent

• Standard 2 1/16-in. flange connection (fits most standard flowlines)

Reservoir monitoring

Weatherford offers a broad range of subsea reservoir monitoring solutions. From high-performance quartz gauges to

multi-parameter optical sensing systems, we provide operators with the tools they need to

maximize production, improve recovery and avoid costly well interventions.

Weatherford’s field-proven, robust sensing systems are compatible with industry-provided subsea tree and ROV wet-mateable

electronic and fiber-optic connector systems.

Weatherford’s RMSeq™ monitoring system provides high-performance pressure and temperature sensing and is suited for reservoir monitoring and intelligent well applications. The subsea quartz gauge solution includes a fully redundant, IWIS-compatible downhole interface card that is available for use in any subsea electronic or control module. The interface card is capable of dual SEM and/or SCM operation, maximizing long-term reliability.

Red Eye subsea water-cut meter.



Weatherford is the world leader in optical sensing for oil and gas applications. Reservoir monitoring solutions include optical pressure/temperature gauges, ultra-high-performance point temperature sensors, full-bore multiphase downhole flowmeters, multi-component seismic sensors and distributed temperature sensing. Our optical sensors are ideal for reliable, life-of-well monitoring to provide the most practical and advanced platform for multi-parameter sensing. Applications include monitoring well completions and wellbore integrity, artificial-lift systems, multizone intelligent-well devices, sand-control systems, downhole multiphase flow, passive microseismics, time-lapse seismic imaging and more.

Weatherford offers both fiber-in-umbilical (FIU) and marinized instrumentation options for subsea optical sensing. FIU solutions enable subsea downhole sensing without subsea electronics or data bandwidth limitations. When fiber is unavailable in the umbilical cabling, or is impractical because of the complexity of subsea well placement and cable architectures, marinized opto-electronic instrumentation can easily be placed on the seabed, enabling a wide range of downhole optical-sensing solutions. The marinized opto-electronic instrumentation is best interfaced with high-bandwidth subsea communications systems, including Weatherford’s OCC, to enable the collection of large amounts of downhole data.

Subsea leak detection via high-definition video surveillance system

Weatherford’s subsea surveillance system provides permanent high-definition video recording in presentation mode and transmission of real-time video. The system allows you to create a video history of installations, upgrades and repairs, or real-time viewing of system operations. The camera system provides user control to remotely pan, tilt and change the lighting. The subsea system’s modular design has a depth rating of 3,281 ft (1,000 m) for aluminum housing or 9,842 ft (3,000 m) for optional titanium housing. This system includes a complete web-based software suite providing control, storage and display of image data. The high-definition capability enables the camera to detect very small gas and oil bubbles, with specific receptors, even in murky sea water.

iScan™ high-definition video surveillance system.

RMSeq™ permanent downhole quartz gauge.


Flow assurance

Weatherford has combined several products into one true solution to monitor, predict and manage the flow regime. The Red Eye® water-cut meter measures the actual water-inhibitor concentrations in the flow-line directly from each well. Our WellFlo® and ReO® software applications provide the analysis you need to create hydrate-management strategies to optimize inhibitor injection and eliminate the expense of over-dosing. Operators can track simulated hydrate curves (with and without inhibitor) on a real-time basis, enabling proactive hydrate management. These analysis tools provide the data needed to select the right lift technology to minimize hydrate formation (gas-lifted riser versus subsea multiphase pump).

Flow assurance prediction is available for individual wells or entire fields. A production/engineering knowledge-base is included to help improve efficiency and knowledge transfer. Additionally, a newly designed user interface simplifies the operation for many of the applications.

WellFlo analysis results screen.

ReO well modeling plotting.



Intervention solutions/test equipment

A broad range of test equipment is available for rent or to purchase

Workover and control systems

Weatherford provides a comprehensive range of workover and control systems (WOCS) to meet all of your completion requirements. Our flexible approach enables us to provide cost-effective solutions from single-well interventions or completions to large, multi-well developments anywhere around the world.

Weatherford offers service and maintenance support globally from our well-established operating bases in Europe, the Middle East, North America, and AsiaPac.

Open systems for control, monitoring and analysis

Weatherford provides worldwide service and support from more than 900 locations in approximately 100 countries. To learn more about our production optimization solutions,

contact an authorized Weatherford representative or visit weatherford.com.

Weatherford Subsea Production Solutions

weatherford.com © 2010 Weatherford. All rights reserved. 7585.00

Weatherford products and services are subject to the Company’s standard terms and conditions, available on request or at weatherford.com. For more information contact an authorized Weatherford representative. Unless noted otherwise, trademarks and service marks herein are the property of Weatherford and may be registered in the United States and/or other countries. Weatherford products named herein may be protected by one or more U.S. and/or foreign patents. For more information, contact [email protected]. Specifications are subject to change without notice. Weatherford sells its products and services in accordance with the terms and conditions set forth in the applicable contract between Weatherford and the client.