Applications of Fiber Optic Real Time Distributed Temperature Sensing (DTS) in A Heavy Oil Production Environment

2006 ◽  
Author(s):  
John Joseph Goiffon ◽  
Dan Gualtieri
Keyword(s):  
Real Time ◽  
Heavy Oil ◽  
Fiber Optic ◽  
Oil Production ◽  
Temperature Sensing ◽  
Production Environment ◽  
Distributed Temperature Sensing

Value of DTS in Multi-Stacked Reservoirs to Better Understand Injectivity and Water Flood Effectiveness – A Field Example from the UAE

2021 ◽  
Author(s):  
Jorge Gomes ◽  
Jane Mason ◽  
Graham Edmonstone
Keyword(s):  
Lower Cretaceous ◽  
Fiber Optic ◽  
Water Movement ◽  
Water Injection ◽  
Reservoir Management ◽  
Oil Production ◽  
Temperature Sensing ◽  
Dense Layer ◽  
Distributed Temperature Sensing ◽  
Injection Water

This paper highlights the application of downhole fiber optic (FO) distributed temperature sensing (DTS) measurements for well and reservoir management applications: 1) Wellbore water injectivity profiling. 2) Mapping of injection water movement in an underlying reservoir. The U.A.E. field in question is an elongated anticline containing several stacked carbonate oil bearing reservoirs (Figure 1). Reservoir A, where two DTS monitored, peripheral horizontal water injectors (Y-1 and Y-2) were drilled, is less developed and tighter than the immediately underlying, more prolific Reservoir B with 40 years of oil production and water injection history. Reservoirs A and B are of Lower Cretaceous age, limestone fabrics made up of several 4th order cycles, subdivided by several thin intra dense, 2-5 ft thick stylolitic intervals within the reservoir zones. Between Reservoir A and Reservoir B there is a dense limestone interval (30-50 ft), referred as dense layer in the Figure 1 well sections.

World First All-Electric Intelligent Completion System with Permanent Monitoring to Evaluate Injection Performance in a Mature Injector Well

2021 ◽  
Author(s):  
Walter Sanchez ◽  
Iván Coronel ◽  
Edgar Mora ◽  
Carlos Giosa ◽  
Monica Satizabal ◽  
...  
Keyword(s):  
Real Time ◽  
Heavy Oil ◽  
Fiber Optic ◽  
Oil Production ◽  
Oil Field ◽  
Technology Selection ◽  
Time Data ◽  
Well Completion ◽  
Operational Costs ◽  
Real Time Data

Abstract Traditional waterflooding methods in heavy oil fields can lead to several problems including reductions of swapping efficiency, channeling of injected water, and low values of recovery factor. These problems are often made worse by other critical factors such as lack of real-time data, operational incidents during injection profile calibration, and complexity of interventions in the existing wells. An innovative solution was implemented in a four-zone injector well in a heavy oil field in Colombia consisting of four intelligent electric valves controlled remotely and distributed fiber optic monitoring to calculate injected flow per zone in real-time. This system allowed the operator to increase oil production in the associated producer wells and eliminate rig-less interventions. The first installation of an All-Electric intelligent completion with distributed fiber optic monitoring was successfully deployed in a complex existing injector well without HSE incidents nor deviations in time and cost. After one year of operation, the system increased production in corresponding producer wells by 62% and saved 30% of operational costs. Additionally, the completion design has improved the injection performance which means that the system requires less injected water to produce the same amount of oil. All these results were possible thanks to the use of a more efficient injection completion and the use of real-time data to make on-time decisions. The importance of this implementation is that it demonstrated that this type of technology not only solves different challenges of the Enhanced Oil Recovery (EOR) strategies of mature fields but also brings additional value in terms of oil production, injection performance, and reduction in operational costs. In this way, this application showed that an intelligent completion - usually expensive in terms of initial investment - is financially viable to implement in mature existing wells with limited CAPEX availability. This paper will present the implementation of an intelligent well completion system that uses permanent distributed fiber optics to monitor water injection in 4 independent zones. The document will also include details regarding the reasons to install this technology in a mature field, well and technology selection, intelligent completion design, and installation. Results will be compared to conventional completion for injector wells that depends on rig-less intervention to measure and regulate injected flow per zone.

scholarly journals Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing

2021 ◽  
Vol 7 (20) ◽  
pp. eabe7136
Author(s):  
Robert Law ◽  
Poul Christoffersen ◽  
Bryn Hubbard ◽  
Samuel H. Doyle ◽  
Thomas R. Chudley ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Basal Layer ◽  
Temperature Sensing ◽  
Distributed Temperature Sensing ◽  
Catchment Scale ◽  
Outlet Glacier ◽  
Coarse Spatial Resolution ◽  
High Vertical Resolution ◽  
Fast Motion ◽  
Strain Heating

Measurements of ice temperature provide crucial constraints on ice viscosity and the thermodynamic processes occurring within a glacier. However, such measurements are presently limited by a small number of relatively coarse-spatial-resolution borehole records, especially for ice sheets. Here, we advance our understanding of glacier thermodynamics with an exceptionally high-vertical-resolution (~0.65 m), distributed-fiber-optic temperature-sensing profile from a 1043-m borehole drilled to the base of Sermeq Kujalleq (Store Glacier), Greenland. We report substantial but isolated strain heating within interglacial-phase ice at 208 to 242 m depth together with strongly heterogeneous ice deformation in glacial-phase ice below 889 m. We also observe a high-strain interface between glacial- and interglacial-phase ice and a 73-m-thick temperate basal layer, interpreted as locally formed and important for the glacier’s fast motion. These findings demonstrate notable spatial heterogeneity, both vertically and at the catchment scale, in the conditions facilitating the fast motion of marine-terminating glaciers in Greenland.

scholarly journals Experimental Study of a Real-Time and Highly Sensitive Fiber-Optic Porous Silicon Temperature Sensing Probe

2018 ◽  
Vol 18 (13) ◽  
pp. 5361-5367
Author(s):  
Raffaele Caroselli ◽  
David Martin Sanchez ◽  
Salvador Ponce-Alcantara ◽  
Francisco Prats Quilez ◽  
Luis Torrijos Moran ◽  
...  
Keyword(s):  
Experimental Study ◽  
Porous Silicon ◽  
Real Time ◽  
Fiber Optic ◽  
Temperature Sensing ◽  
Highly Sensitive

Measuring Artificial Recharge with Fiber Optic Distributed Temperature Sensing

Ground Water ◽  
2012 ◽  
Vol 51 (5) ◽  
pp. 670-678 ◽  
Author(s):  
Matthew W. Becker ◽  
Brian Bauer ◽  
Adam Hutchinson
Keyword(s):  
Fiber Optic ◽  
Artificial Recharge ◽  
Temperature Sensing ◽  
Distributed Temperature Sensing
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