A major factor in the coupling of acoustic or vibrational signal transmitted to the sensing fiber is the location and installation method of the cable. Distance from the fiber to the sound source must also
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This study presents the evolution of downhole fiber optics to a new hybrid electro-optical cable for coiled tubing (CT) applications. The optical fibers enable optical communication and
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The cable range for direct buried installation includes all four of our basic designs: concentric core, slotted core tape, DryTech and loose tube tape. The cables are reinforced with corrugated steel tape,
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It has been an impressive comeback for a technology that once stood on the brink of failure. The upstream oil and gas industry has largely resolved
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ABSTRACT Vertical seismic profiles are usually acquired by deploying downhole seismic sensors below a wireline logging cable. A seismic source is triggered at surface while recording the downhole
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1 Cable installation methods Optical fibre must be protected from excessive strains, produced axially or in bending, during installation and various methods are available to do this. The aim of all optical fibre
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However, the currently distributed fiber optic vibration signal logging also fails to fully utilize the technical advantages to form a systematic production
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Fiber-optic-system installations have reduced the need for intervention by logging tools and have given crucial insights into wellbore
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Well logging requires robust technology because of harsh well conditions and cutting-edge technology because of complex reservoir
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Many options exist for installation of the Levelogger, but essentially these installation methods can be classified into two broad categories: free suspended or fixed installations.
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A well logging cable connected to the logging instrument includes a light conductor. The logging instrument further includes a circuit for applying the light pulses to one end of the...
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If required, instead of using a cable, the optical fiber can be pumped through a conduit using SLB patented techniques to provide a cost-effective monitoring system suitable for high-volume applications.
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This development has led to a new logging cable with superior mechanical properties, containing eight electrical wires and three optical fibers with a data rate of at least 10 Mbitsl second each. This fiber
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Discover the essential installation techniques for optical fiber cables, including trenching, direct burial, aerial, and indoor methods. Learn about
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Despite the advantages of fiber optics technology in information-carrying capacity and sensing, adoption has not been as rapid in subsea oil production as in other industries. Optical fibers are seen as
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Flow scanned horizontal well and deviated well production logging system are specially developed for large deviated wells, horizontal wells, and near horizontal wells.
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Since time and clear answers are of prime importance in well integrity assessment, fiber optics has a key role to play in modern well integrity monitoring. This paper discusses the use of fiber optics for well
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Optimum performance for sensing objectives depends on cable type, installation method, cable position and the site environmental conditions. This applies to existing cables as well as those installed
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The use of fiber-optic cable and control lines for instrumented well installations poses certain obstacles to companies wanting to safely design and execute perforating programs which do
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A CO 2 gas injection well field experiment was conducted using this technology. A 1671m well was dug, and 1631m of optical cable were installed in the tubing. The tubing leakage position
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Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole. The log may be based either on visual inspection
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The new technique uses coiled tubing equipped with optical fibers to acquire real-time measurements from the downhole logging string. The advantages of this conveyance option include
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Here we outline some new technologies in this context within case studies from different research projects including permanent installation of fiber-optic sensor cables behind casing, monitoring of
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In the HE-35 high-temperature geothermal well (Iceland), a cable with a “hermetic” carbon/polyimide-coating fiber was installed, also to avoid the effect of hydrogen darkening.
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Other methods such as the cable-tool method, jetting method, and boring (bucket auger) method are available. If these and/or other methods are selected for monitoring well installations, they should be
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Carina 100Xlog is a high-efficiency retrievable fibre optic well logging service that visualizes entire well dynamics in real-time much more rapidly than conventional
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Select fiber-optic well sensing system appropriate for well type and surveillance need. Specify completion hardware and fiber-optic system components (fiber, cable, instruments) needed to
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