Introduction to this special section: Reservoir monitoring

2020 ◽  
Vol 39 (7) ◽  
pp. 462-463
Author(s):  
David H. Johnston
Keyword(s):  
Oil And Gas ◽  
Enhanced Recovery ◽  
Special Section ◽  
Time Lapse ◽  
Thermal Recovery ◽  
Seismic Profiles ◽  
Steam Assisted Gravity Drainage ◽  
Vertical Seismic Profiles ◽  
Wide Range ◽  
Reservoir Monitoring

The papers submitted to this special section demonstrate that the topic of reservoir monitoring is extremely diverse. This diversity is reflected in the wide range of geologic settings covered by these papers — deepwater unconsolidated clastics, more cemented sandstones in onshore fields, and carbonates. Diversity is seen in the range of production scenarios described by these papers — water sweep of oil and gas, thermal recovery using steam-assisted gravity drainage (SAGD), and enhanced recovery using CO2 injection. Moreover, the papers in this section cover much more than time-lapse 3D seismic. Although about half of the submitted papers use 4D surface seismic data to monitor reservoirs, the remainder cover a diversity of methods that include time-lapse vertical seismic profiles (VSPs), repeat well logging using distributed acoustic sensing (DAS), and muon tomography. Even the concept of the “reservoir” is expanded to include monitoring microseismicity that might result from production activity.

Technology Focus: Production Monitoring (March 2021)

2021 ◽  
Vol 73 (03) ◽  
pp. 48-48
Author(s):  
Carlos Mata
Keyword(s):  
Life Cycle Cost ◽  
Oil And Gas ◽  
Pressure Fluctuations ◽  
Time Lapse ◽  
Use Cases ◽  
Distributed Temperature Sensing ◽  
Tidal Forces ◽  
Reservoir Monitoring ◽  
Reducing Costs ◽  
Online Library

Last year, events accelerated several trends in the energy landscape. Oil and gas prices have remained low, and the industry is focusing more strongly on reducing costs and increasing operational efficiency. Reducing costs is not only about cutting costs today but also about reducing the life-cycle cost per barrel. Implementing innovative technologies that increase recovery requires a small investment but can bring large rewards. Advances in sensor accuracy, computing power, and data analytics unlock innovative use cases for technology for mapping subsurface movements of fluids. Very different technologies provide independent insights into the displacement process in the reservoir—for example, distributed acoustic sensing (DAS) used for periodic 4D seismic, time-lapse borehole microgravity surveys for 4D reservoir fluid mapping, DNA analytics to map interwell connectivity and zonal contributions, and interpreting downhole gauge pressure fluctuations caused by tidal forces to map fluid fronts. The aggregation of these uncorrelated insights helps geologists and reservoir engineers narrow down the number of possible realizations of the reservoir model, better map bypassed resources, and provide forecasts that are more realistic. On the production side, well instrumentation continues to become more affordable over time. For example: distributed temperature sensing, DAS, and downhole gauge lines can be run in a single optoelectric cable, which reduces well complexity and instrumentation costs. Wells can be instrumented at surface for less than $5,000 using wireless technologies. Wireless downhole gauges also can be retrofitted in older completions. There are many ways to leverage technology for improving production and reservoir monitoring and unlocking potential. The OnePetro online library offers a large collection of novel use cases for technology and algorithms applied to production and reservoir monitoring. The challenge now is to transform the way we work to realize the maximum value from such technology.

Frequent 4D monitoring with DAS 3D VSP in deep water to reveal injected water-sweep dynamics

2020 ◽  
Vol 39 (7) ◽  
pp. 471-479 ◽  
Author(s):  
Denis Kiyashchenko ◽  
Albena Mateeva ◽  
Yuting Duan ◽  
Duane Johnson ◽  
Jonathan Pugh ◽  
...  
Keyword(s):  
Deep Water ◽  
Low Cost ◽  
Water Injection ◽  
Time Lapse ◽  
Reservoir Model ◽  
Seismic Profiles ◽  
Vertical Seismic Profiles ◽  
Distributed Acoustic Sensing ◽  
The Impact

Time-lapse monitoring using 3D distributed acoustic sensing vertical seismic profiles (DAS VSPs) is rapidly maturing as a nonintrusive low-cost solution for target-oriented monitoring in deep water. In a Gulf of Mexico field, DAS fibers deployed in active wells enable detailed tracking of the water flood in two deep reservoirs. Multiple tests in adverse well conditions let us understand the impact of source size and other factors on the spatially dependent quality of time-lapse DAS data and prove that excellent image repeatability is achievable under typical field conditions. Frequent repeat surveys allowed us to predict the timing of water arrival in a producer and to observe new water injection patterns that are important for understanding water-flood performance. Going forward, DAS 4D monitoring is envisioned as a tool that can assist with proactive wells and reservoir management, new well planning, and reservoir model updates.

Introduction to this special section: CO2 in the subsurface

2020 ◽  
Vol 39 (1) ◽  
pp. 15-15
Author(s):  
Vanessa Nunez-Lopez ◽  
Laura Chiaramonte ◽  
Kyle T. Spikes
Keyword(s):  
Carbon Dioxide ◽  
Enhanced Recovery ◽  
Special Section ◽  
Time Lapse ◽  
Good Picture ◽  
Formation Evaluation ◽  
Injection Practices

The topic of carbon dioxide (CO2) in the subsurface relates to enhanced recovery efforts and the fate of CO2 in injection and sequestration scenarios. The papers in this special section address those situations from the perspectives of formation evaluation, injection practices, and time-lapse monitoring. The fields under study in these papers all drastically differ from one another in geologic complexity, so no standard workflow suffices to characterize all of them. These papers paint a good picture of the range of issues associated with the understanding of CO2 in the subsurface.

Introduction to this special section: Borehole geophysics

2019 ◽  
Vol 38 (11) ◽  
pp. 832-832
Author(s):  
Sarah Coyle ◽  
Jesús M. Salazar ◽  
Kyle T. Spikes
Keyword(s):  
Special Section ◽  
Resolution Enhancement ◽  
Business Value ◽  
Ultrahigh Pressure ◽  
Seismic Profiles ◽  
Borehole Geophysics ◽  
Vertical Seismic Profiles ◽  
Velocity Models ◽  
Worth Reading ◽  
Distributed Acoustic Sensing

When borehole geophysics technologies and applications come to mind, often we think of vertical seismic profiles (VSPs), checkshots, or wireline logging measurements. Problems that have been addressed include resolution enhancement, coverage, illumination, and time-to-depth conversion, among others. The papers in this special section, however, extend these relatively well-known techniques to include salt proximity work, use of high-pressure and ultrahigh-pressure geophones in VSPs, distributed acoustic sensing (DAS), acoustic wellbore ranging, refinement of velocity models and image enhancement, and impacts on business value. Although all the papers could have been about, for example, DAS or vertical resolution improvements, this special section turned out to be broader in terms of the application of borehole geophysics. What drives the need for borehole geophysics in these applications? Is it the significance of business value? Is it scientific and engineering knowledge? Is it some combination thereof? The answers to those questions are not addressed directly, but each paper is unique and offers useful results and techniques across many disciplines. This special section is not extensive in terms of the number of papers, but those included are well worth reading.

Dynamic Petrophysics-Applications of Time-Lapse Reservoir Monitoring in Saudi Arabia

2005 ◽  
Author(s):  
Shouxiang Mark Ma ◽  
Raghu Ramamoorthy ◽  
Abdulrasool Al-Hajari ◽  
Oscar Kelder ◽  
Ashok Srivastava
Keyword(s):  
Saudi Arabia ◽  
Time Lapse ◽  
Reservoir Monitoring

Spatially limited tomographic inversion for time-lapse oil reservoir monitoring

2002 ◽  
Vol 33 (1) ◽  
pp. 18-22
Author(s):  
Toshiyuki Yokota ◽  
Akio Nishida ◽  
Shigeharu Mizohata ◽  
Sunao Muraoka
Keyword(s):  
Time Lapse ◽  
Oil Reservoir ◽  
Tomographic Inversion ◽  
Reservoir Monitoring

Geo-Thermo-Mechanical Modeling of Pre-Drilled Wellbores to Extract Geothermal Energy from Subsurface to Produce Cleaner Energy for United Arab Emirates

2021 ◽  
Author(s):  
Ubedullah Ansari ◽  
Najeeb Anjum Soomro ◽  
Farhan Ali Narejo ◽  
Shafquat Ali Baloch ◽  
Faiz Ali Talpur
Keyword(s):  
High Temperature ◽  
United Arab Emirates ◽  
Mechanical Model ◽  
Geothermal Energy ◽  
Oil And Gas ◽  
Middle Eastern ◽  
Clean Energy ◽  
Thermal Recovery ◽  
Abandoned Wells ◽  
Single Well

Abstract The middle eastern countries including United Arab Emirates (UAE) have enjoyed the energy production from hydrocarbon resource for a very long period. Indeed, now various countries in this region has shifted to alternative resources of power generation with cheaper and cleaner sources. Geothermal is the top of the list among those sources. Therefore, this study presents an ultimate model converting abandoned oil and gas wells into subsurface geothermal recovery points. Fundamentally, this study offers a geo-thermo-mechanical model of abandoned wellbore which can help in developing an optimistic geothermal energy not only from subsurface thermal reserve but also from abandoned casing and pipes installed in Wellbores. In this approach the source of heat is thermally active rock formations and the metallic pipes that are present in wellbores drilled through hot dry rocks. In the model the already drilled wells are incorporated as medium of heat flow in which water in injected and brought back to surface along with thermal impact. The results of this study revealed that, at the depth of 6000 m of high temperature wellbore the temperature is above 85°C and at this temperature the metallic casings further rise the reserve temperature thus the conversion of water into steam can be processed easily. Moreover, at high depths the stability of wellbore is also issue in high temperature formation, so mechanical model suggests that injection of water and conversion into steam in already cased wellbore can sustain up to 6 MPa stress at around 100C. Thus, the geo-thermo-mechanical model of wellbore will illustrate the possibility of converting water into steam and it will also reveal the average amount of heat that can be generated from a single well. henceforth, the thermal recovery from abandoned wells of UAE is best fit solution for clean energy. The abandoned wells are used as conduit to transport heat energy from subsurface by using water as transport medium, as water at surface temperature is injected in those wellbores and let thermal energy convert that water into steam. Later the steam is returned to surface and used as fuel in turbines or generators.

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