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Keywords: fiber
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Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5610-MS
... the true temperatures of wellbore stream and formation as the fiber reports the temperature at its location, i.e. the cemented annulus. The location of the fiber in the radial cross section (i.e. cable location) of the annulus and the presence of clamps and joint protectors (i.e. completion effects...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5295-MS
... (~300 ft) after well shut in, and (iii) very complex LF-DAS strain rate patterns for a small fiber-to-stage offset. Advanced geomechanical modeling was performed to simulate the hydraulic fracture propagation and the resulting strain responses in the vertical direction. The modeling results demonstrated...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5408-MS
... Abstract Fiber Optic monitoring in unconventional reservoirs has proven to be an invaluable diagnostic tool for assessing both near-wellbore stimulation effectiveness and to help describe the far-field frac geometries created by hydraulic fracture stimulation. Unfortunately, gaining any...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5436-MS
... Abstract Rayleigh frequency shift based distributed strain sensing (RFS-based DSS) is a fiber-optic based diagnostic technique, which can measure the strain change along the fiber. The spatial resolution of RFS-based DSS can be as low as 0.2 m, and the measuring sensitivity is less than 1 με...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5140-MS
... complex reservoir completion installation and operations information perforation shot stimulation unisolated plug production logging frequency fiber vertical seismic profile reservoir surveillance near-wellbore conductivity decay rate wave propagation p-wave velocity upstream oil & gas...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5512-MS
... Abstract Here we highlight a case study of the results of production monitoring of a hydraulically fractured horizontal well using a wireline deployed fiber optic cable. A well was chosen for production monitoring within the operator's large acreage position in East Texas so that the learnings...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5527-MS
... experiments with various initial and boundary conditions, which represent a wide range of reservoir types including fractured unconventional and geothermal reservoirs. The temporal strains along the fiber are recorded and analyzed. The study quantifies the thermal effect on LF-DAS measurements. The results...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-3274-MS
... was achieved using intervention based distributed fiber optic (DFO) measurements. The paper demonstrates how the integration of acoustic and temperature recordings can be used to quantify completion efficiency. The case studies are primarily from the Meramec Formation in the Northwest STACK...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2440-MS
... formation and monitor fracture treatment and propagation. Geomechanical modeling is used to understand the in-situ stresses, microseismic to describe half-lengths and heights, and fiber optics to characterize offset well Fracture Driven Interactions (FDI's) and interstage communication. Recent publications...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-585-MS
... acquiring several different types of data, a more accurate picture of the fracturing process can be observed and field development and geomechanical models can be adjusted accordingly. The use of DAS/DTS fiber allows for a very cost-effective and rapid acquisition of vertical seismic profiles. Pioneer has...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-900-MS
... proppants verified that proppant enters the interfaces for the case when proppant diameter is several times smaller than the interface thickness. And, experiments with cellulose fibers demonstrated that the fibers bridged and accumulated in the regions near interfaces while the main fluid flow inside the...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-949-MS
... the measurement. We attack the differential attenuation bias by comparing and averaging the measurements from the down-going and up-going fiber, avoiding or correcting locations where fibers are spliced or damaged. The offset bias due to instrument instability is calibrated using borehole gauge...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-922-MS
... Abstract Fiber-optic distributed acoustic sensing (DAS) offers advantages in time-lapse VSP seismic monitoring of an unconventional reservoir. Petrophysical changes to the reservoir due to hydraulic fracturing of the rocks change the character of seismic waves. Repeatable DAS VSP measurements...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-184-MS
... signal related to static strain from the lowest vibration frequencies of the fibre. From this hybrid cable composed of fiber interconnects and 3C geophones, we may recover extended-aperture information (i) to supplement the geophone-acquired data at microseismic frequencies, (ii) to better constrain...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-291-MS
... Abstract Hydraulic fracturing stimulation designs are moving towards tighter spaced clusters, longer stage length, and more proppant volumes. However, effectively evaluating the hydraulic fracturing stimulation efficiency remains a challenge. Distributed fiber optic sensing, which includes...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 23–25, 2018
Paper Number: URTEC-2900760-MS
... Abstract Fiber optic distributed acoustic sensors (DAS) provide a new perspective on the subsurface environment and allow observations of previously unrecorded signals, such as the strain field associated with fracture opening during stimulation. Utilizing GEOS, a flexible multi-scale, multi...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 24–26, 2017
Paper Number: URTEC-2670716-MS
... Abstract Hydraulic fracturing operations in unconventional reservoirs are typically monitored using geophones located either at the surface or in adjacent wellbores. A new approach to record hydraulic stimulations utilizes fiber-optic Distributed Acoustic Sensing (DAS). A fiber-optic cable was...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 24–26, 2017
Paper Number: URTEC-2686732-MS
... significant role in shedding light on many unknowns pertaining to production from these resources. Fiber-optic is among the new technologies that has recently received more attention in unconventional reservoir development. The data collected through optical fiber running along the horizontal or multi...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 24–26, 2017
Paper Number: URTEC-2695394-MS
... responses and may show a time-lapse signature. 3D vertical seismic profiles (VSPs) were acquired in a vertical well equipped with an external distributed acoustic sensing (DAS) optical fiber, both before and immediately after the stimulation of two offset horizontal wells Fiber optic cable makes the...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 24–26, 2017
Paper Number: URTEC-2695282-MS
... Summary Distributed Acoustic Sensing (DAS) optical fiber for downhole geophysical measurements is a fairly new technology the industry is utilizing to better characterize hydraulic stimulations. Data were acquired with a vertical observation well that was instrumented externally with dual and...

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