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 distributed measurements such as distributed temperature and acoustic sens...
HOME / Principle of High-Temperature Well Logging Optical Cable in Slovenia - Umele Photonics & Micro-Optics Europe
This study found that the cable can sustain temperatures reaching 300 °C with high parallel cable resistance once the binder has been baked out. Additionally, the cable was tested at 300 °C and
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
The range of cables for direct buried installation includes all our four basic designs: concentric core, grooved core tape, DryTech and tape in loose tubes.The cables are reinforced with corrugated steel
Fiber optic cables have the advantages of high temperature resistance, high pressure resistance, corrosion resistance, and high accuracy in measuring temperature DTS data. They are widely used
The ability to provide reliable transmission systems in the harsh environments like high temperatures is the key driver for the continued use of fiber-optic communication for in-well applications.
Distributed fiber optic vibration signal logging is a technology that uses fiber optics to sense the vibration signals returned from different formations
This paper will identify these critical factors and address proper candidate well selection and job preparation. It will also illustrate a multiwell logging campaign in the Marcellus shale, which
Well logging has been used systematically in Iceland since 1976 to study and explore geothermal wells, not only the classical logs of temperature and pressure, which the geothermal industry
Principles and application of distributed optical fiber temperature sensor (DTS) are introduced. Applications of DTS in power system in Shanghai World Expo project and Shanghai
These results demonstrate that fiber optics represents a paradigm shift in well integrity assessment, transitioning from interpretive and reactive methodologies to real-time, high-resolution, and proactive
Abstract. Maintaining well integrity is a critical aspect of safe, efficient, and economically viable oil and gas production. Traditional well diagnostic tools such as calipers and single-point
Well logs are usually recorded while the logging device is being winched upward through the well. The measurements from the instruments housed in the log-ging tool are recorded digitally at intervals of
We show that fiber-optic sensing opens up new possibilities for geophysical measurements with a broad range of applications in well logging and seismic exploration and monitoring.
We pioneered accelerated aging tests for optical fibers at high temperatures; the fiber resulting from this research demonstrates an almost 50-fold increase in light transmission, exceptional resistance to
Well logging is a means of recording the physical, acoustic and electrical properties of the rocks penetrated by a well. It is carried out by service companies, which work under contract for...
Considering the temperature resistance of the downhole optical fiber, the coiled tubing does not continue to enter the well. In order to ensure the accuracy of the position of the optical fiber into the well, it is
Well logging is defined as a record of geological formations penetrated by a borehole, capturing data related to time and depth during drilling. It utilizes various logging tools to measure properties such
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
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
High temperature electronics application in well logging R. TraegerP. Lysne Engineering, Physics 1988 TLDR The current capabilities of each element in a well-logging system are summarized, and
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
First, in view of the slow transmission rate of the logging cable, an advanced high-speed cable transmission module is adopted. Secondly, the ground system and the downhole instrument were
18 geothermal well with a 3.6 km long fiber-optic installation mounted to a 3⁄4” sucker-rod by using both DAS and temperature sensing (DTS) data. During cold-water injection, we obs and migrate up- a 21
Fibercore, in conjunction with selected partners, offer wireline logging cables that utilize Fibercore''s hydrogen resistant, high temperature fibers. The optical fibers