Communications/Telemetry
that it has reached an agreement with ConocoPhillips to provide distributed fibre optic (DFO) intervention services in the Continental United States. Ziebel will offer its DFO intervention services beginning in the first quarter of 2015 from its base in Houston, Texas. Ziebel will employ a purpose-built, trailer-
mounted Z-System that uses fibre optic composite rod technology to access and visualise wellbores in real-time. During the campaign, Ziebel will work closely with ConocoPhillips on a series of wells, focusing primarily on horizontal wells in its unconventional plays. The Z-System is able to travel safely through
restrictions to reach zones of interest in horizontal sections of the wellbore to capture novel information applicable to well flow optimisation, integrity risk control, reservoir modelling and enhanced oil recovery. This is achieved with minimal production interruption compared with other traditional intervention and data acquisition techniques, which can struggle with reach or speed, making it a cost-effective solution.
Investigating unconventional reservoir behaviour P
rovider of specialist well intervention services for the oil and gas industry, Ziebel, has announced
ConocoPhillips plans to compare
information gathered by the system with results from previous work conducted in the North Sea. Ziebel offers its intervention
services to operators in the oil and gas industry. To ensure that all well data acquired on behalf of its customers is analysed and communicated to customers as soon as possible, the company is also establishing a dedicated data processing centre in Houston. The ability of distributed measurement systems
to simultaneously capture and display information from all points in a well makes this technology a powerful tool for visualisation of downhole fluid movement and discrete events. Transient dynamic events can now be ‘seen’. The full picture of what is really happening in the well bore and surrounding vicinity is now available. The Z-System runs a 19/32in (15mm) diameter
carbon composite rod into the well by means of an injector in much the same manner as a coiled tubing unit. The carbon rod is semi-stiff and
can be pushed into the horizontal section of the wellbore, without requiring the use of well tractors or other powered devices to obtain reach into the horizontal section. The slim size of the rod and the bottom hole assembly does not choke the flow or significantly alter the flow characteristic of the well being surveyed, which is important in the slimmer wells that are prevalent in the unconventional market. The slim size and short length of the BHA also allows the system to negotiate and pass through tight ID restrictions, whereas traditional well surveillance tools are at a disadvantage. l
For more information visit
www.ziebel.com
– via better data reliability, availability and performance than traditional copper communication systems – so have the number of ‘deployable’ systems used in remote locations. These applications range from offshore and land-based
Deployable fibre optic systems boost reliability A
s the use of fibre optics has increased in the oil and gas industry to enhance production
rig automation to real-time sensors for pipeline monitoring to systems for geo-exploration, wireless communications, security infrastructure, smart well controls, and operations control centres. In the field, deployable systems are increasingly
important to ensure satellite uplink networks, DCS/PLC automation/control, CCTV for physical security, SCADA for pipeline control, monitoring and wellhead automation, as well as LAN/WAN communication infrastructures for shore-to- platform and inter-platform connections. In contrast to fixed installations, deployable
systems are designed to be quickly installed, retracted and then relocated in the field in some of the most inhospitable environments on earth. As oil and gas exploration/production continues to get more remote as well as colder, hotter, or deeper, deployable systems will become even more vital. Given the environments in which they reside,
oil and gas-grade fibre optic systems are typically commercialised versions of field-tested, proven military-grade products. As such, the component parts of the system
are designed to withstand everything from dust and debris to chemical exposure, temperature
extremes, UV, radiation, electrical power transients, interference, fire, moisture, humidity, water, crush, tension, flexing, impact and vibration. Rick Hobbs at Optical Cable Corporation (OCC)
comments: “Unlike fixed applications, a deployable system is designed from beginning to end (plug & play) and delivered as a complete solution. OCC designs and manufactures fibre optic cable, connectors and assembly solutions for harsh and rugged environments.” According to Hobbs, the primary elements
of a deployable system include, “hardened cable jacketing; ‘genderless’ connectors for quick deployment; hybrid systems that include copper along with fibre to deliver data communications and power; and reel systems that speed deployment and retraction while protecting the fibre while not in use, or during transit.” For purposes of deployment, OCC typically
recommends its tight bound, tight buffered distribution style cabling, which is ideal because of its small diameter and lightweight construction. l
For more information
www.occfiber.com
www.engineerlive.com 57
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