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Production Behavior And Decline Curve Analysis Of Tuscaloosa Marine Shale Wells In Wilkinson And Amite Counties Mississippi
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Book Synopsis Production Behavior and Decline Curve Analysis of Tuscaloosa Marine Shale Wells in Wilkinson and Amite Counties, Mississippi by : Virginia Nippes
Download or read book Production Behavior and Decline Curve Analysis of Tuscaloosa Marine Shale Wells in Wilkinson and Amite Counties, Mississippi written by Virginia Nippes and published by . This book was released on 2019 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determining Facies Changes, Sedimentary Environments and Hydrocarbon Potential of the Tuscaloosa Marine Shale, in Mississippi and Louisiana Using Well Log Clustering Analysis and Upscaling Procedure by : Ryan Feiner
Download or read book Determining Facies Changes, Sedimentary Environments and Hydrocarbon Potential of the Tuscaloosa Marine Shale, in Mississippi and Louisiana Using Well Log Clustering Analysis and Upscaling Procedure written by Ryan Feiner and published by . This book was released on 2017 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cretaceous Tuscaloosa Marine Shale is an important unconventional gas-shale reservoir located within the Interior Salt Basin in Louisiana and Mississippi. Wells producing from the shale have achieved initial production rates of over 1,000 barrels of oil equivalent (BOE) per day. The production is from naturally fractured facies of the shale where permeability is enhanced through hydraulic fracturing. This study aims to determine the role of mineralogical variations controlling development of natural fractures in different facies of the shale. The variations are determined by integrating mineralogical, core, and wireline log data. During this study, the software program GAMLS, a probabilistic well log clustering analysis program, is used to correlate well logs in over 70 wells throughout the region in order to understand heterogeneities in the Tuscaloosa Marine Shale. By utilizing the GAMLS well log clustering analysis procedure, the formation divided into ten electrotypes (rock types). These units were correlated to variations in fracture density, fracture porosity, and production results throughout the study area. Core samples were taken from each of these ten electrotypes and the relative amounts of quartz, calcite, and clay minerals were correlated with fracture density. The mineralogy and fracture density of the shale are highly heterogeneous throughout the study area and as a result all ten lithofacies are not present in every well. The GAMLS well log clustering results in a positive correlation between lithology, fracture density, and oil production. Physical characteristics of natural fractures (length and mineralization) as well as the frequency of fractures are found to be related to specific lithofacies. The presence of these lithofacies vary throughout the study area, therefore the frequency and type of fractures within the TMS is dependent on lithofacies penetrated by each well.
Book Synopsis Production Data Analysis and Potential Evaluation of Tuscaloosa Marine Shale Oil Wells by : Xu Yang
Download or read book Production Data Analysis and Potential Evaluation of Tuscaloosa Marine Shale Oil Wells written by Xu Yang and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production Optimization and Forecasting of Shale Gas Wells Using Simulation Models and Decline Curve Analysis by : Peter O. Ikewun
Download or read book Production Optimization and Forecasting of Shale Gas Wells Using Simulation Models and Decline Curve Analysis written by Peter O. Ikewun and published by . This book was released on 2012 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production data from the Eagle Ford shale (an analogue to the Shublik shale of Alaska) was compiled from three neighboring counties and analyzed using decline curve analysis (DCA) to correlate production performance with completion method (horizontal leg/stages of fracture) and length of horizontal leg. Generic simulation models were built and run using a realistic range of properties. Simulation results provided a better understanding of interplay between static properties and dynamic behavior. Results from the DCA of 24 producing wells with production histories of 9-57 months showed, for most cases, an increase in reserves with more fracture stages. However, the DCA generated different forecasts depending on which part of the data were used. This clearly indicated the need for running simulations. Simulation runs can generate more reliable production forecast of which the decline part can be used to evaluate the capability of DCA to reproduce the production profiles. A combination of simulation models and DCA was used to optimize production and forecasting. Simulation models were used to optimize production for a range of different reservoir and completion parameters. The ability for DCA to reproduce simulated results (built with similar data from the Eagle Ford) for wells with different production periods was also analyzed. This results in better and more reliable production forecasts for the Eagle Ford and other young producing shale reservoirs possessing short production history. Modeling of the complex reservoir geometry and fracture networks of these types of reservoirs would give an extensive understanding of the flow mechanics.
Book Synopsis Better Understanding of Production Decline in Shale Gas Wells by : Kananek Harongjit
Download or read book Better Understanding of Production Decline in Shale Gas Wells written by Kananek Harongjit and published by . This book was released on 2014 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production data from the Eagle Ford shale (an analog to the Alaska Shublik shale) was collected from two neighboring counties and analyzed to correlate well performance with completion parameters including length of horizontal wellbore and number of hydraulic fracturing stages. Thirty-eight dry gas wells with production history range of 18-43 months were analyzed using 6 different decline curve analysis (DCA) models including Arps' exponential, harmonic and hyperbolic, power law exponential (PLE), logistic growth analysis (LGA) and Duong's models. In the matching process, 2/3 of history was used to tune the DCA models and their forecasts were compared to the remaining 1/3 of real history. The matching results were analyzed based on production history length and flow regime to have better understanding of limitations and capabilities of each DCA model. Reservoir simulation models, constructed using range of realistic data and actual completion practices of 4 select wells, were employed to assess reasonable values of remaining reserve and remaining well life that were used as benchmarks for comparison with DCA results. The results showed that there was no strong correlation between well performance (average first year production rate) and the horizontal leg or the number of fracturing stages. This was an indication of extremely heterogeneous medium. In most cases, the accuracy of the DCA models increased when longer production history was used to tune the model parameters. LGA seems to be the most accurate DCA model since it gave the highest matching accuracy 71% of the total wells when using longest history length of 31 months. As the flow regime is concerned, LGA model also performed very well matched in 57% of the wells exhibiting only transient flow and 63% for the wells showing transient flow during early production time followed by boundary-dominated flow during late production. Moreover, the remaining reserve and well life of the select wells predicted by LGA fell into reasonably close range of the estimates from the reservoir simulations.
Book Synopsis Analysis of Production Data from Horizontal Shale Wells Using Decline Curves by : Atoosa Mashayekhi
Download or read book Analysis of Production Data from Horizontal Shale Wells Using Decline Curves written by Atoosa Mashayekhi and published by . This book was released on 2014 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Decline Curve Analysis in the Elm Coulee Field by : Seth C Harris
Download or read book A Study of Decline Curve Analysis in the Elm Coulee Field written by Seth C Harris and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last two years, due in part to the collapse of natural gas prices, the oil industry has turned its focus from shale gas exploration to shale oil/tight oil. Some of the important plays under development include the Bakken, Eagle Ford, and Niobrara. New decline curve methods have been developed to replace the standard Arps model for use in shale gas wells, but much less study has been done to verify the accuracy of these methods in shale oil wells. The examples that I investigated were Arps with a 5% minimum decline rate as well as the stretched exponential model (SEPD) and the Duong method. There is a great amount of uncertainty about how to calculate reserves in shale reservoirs with long multi-fractured horizontals, since these wells have not yet been produced to abandonment. Although the Arps model can reliably describe conventional reservoir production decline, it is still uncertain which empirical decline curve method best describes a shale oil well to get a rapid assessment of expected recovery. My focus began in the oil window of the Eagle Ford, but I ultimately chose to study the Elm Coulee field (Bakken formation) instead to see what lessons an older tight oil play could lend to newer plays such as the Eagle Ford. Contrary to existing literature, I have found evidence from diagnostic plots that many horizontal wells in the Elm Coulee that began producing in 2006 and 2007 have entered boundary-dominated flow. In order to accommodate boundary flow I have modified the Duong and SEPD methods such that once boundary-dominated flow begins the decline is described by an Arps curve with a b-value of 0.3. What I found from hindcasting was that early production history, up to six months, is generally detrimental to accurate forecasting in the Elm Coulee. This was particularly true for the Arps with 5% minimum decline or the Duong method. Early production history often contains apparent bilinear flow or no discernible trend. There are many possible reasons for this, particularly the rapid decrease in bottomhole pressure and production of fracture fluid. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151644
Book Synopsis Regional Stratigraphy and Lithologic Characterization of the Tuscaloosa Marine Shale in Southwest Mississippi by : Kalli Alyse Dubois
Download or read book Regional Stratigraphy and Lithologic Characterization of the Tuscaloosa Marine Shale in Southwest Mississippi written by Kalli Alyse Dubois and published by . This book was released on 2018 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tuscaloosa Marine Shale (TMS) in southwest Mississippi and south-central Louisiana has potential to become a prolific source of fossil fuels using hydraulic fracturing technology. The objective of this study is to better understand the sequence and regional stratigraphy, lithology, and character of the TMS. Studying the TMS’s lithologic, depositional, and diagenetic properties is essential to maximize potential production. Characterization of the eastern TMS was performed with cuttings from two wells provided by the Mississippi Oil and Gas Board through MDEQ, and two provided by the USGS. Thirty-one petrophysical logs were correlated, to make cross sections and trace sequence stratigraphic intervals within the TMS. Results of the study showed lithologic variability and compaction across the study area, and a sequence stratigraphic correlation of the highstand systems track between the Tuscaloosa and Eagle Ford Groups. This research aims to work toward the greatest potential of the TMS as an unconventional reservoir.
Book Synopsis Wilcox Oil Fields by : Mississippi Geological Society
Download or read book Wilcox Oil Fields written by Mississippi Geological Society and published by . This book was released on 1952 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Emperical Decline Curve Analysis for Shale Wells by : Mohammed Sami A. Kanfar
Download or read book Comparison of Emperical Decline Curve Analysis for Shale Wells written by Mohammed Sami A. Kanfar and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study compares four recently developed decline curve methods and the traditional Arps or Fetkovich approach. The four methods which are empirically formulated for shale and tight gas wells are: 1. Power Law Exponential Decline (PLE). 2. Stretched Exponential Decline (SEPD). 3. Duong Method. 4. Logistic Growth Model (LGM). Each method has different tuning parameters and equation forms. The main objective of this work is to determine the best method(s) in terms of Estimated Ultimate Recovery (EUR) accuracy, goodness of fit, and ease of matching. In addition, these methods are compared against each other at different production times in order to understand the effect of production time on forecasts. As a part of validation process, all methods are benchmarked against simulation. This study compares the decline methods to four simulation cases which represent the common shale declines observed in the field. Shale wells, which are completed with horizontal wells and multiple traverse highly-conductive hydraulic fractures, exhibit long transient linear flow. Based on certain models, linear flow is preceded by bilinear flow if natural fractures are present. In addition to this, linear flow is succeeded by Boundary Dominated Flow (BDF) decline when pressure wave reaches boundary. This means four declines are possible, hence four simulation cases are required for comparison. To facilitate automatic data fitting, a non-linear regression program was developed using excel VBA. The program optimizes the Least-Square (LS) objective function to find the best fit. The used optimization algorithm is the Levenberg-Marquardt Algorithm (LMA) and it is used because of its robustness and ease of use. This work shows that all methods forecast different EURs and some fit certain simulation cases better than others. In addition, no method can forecast EUR accurately without reaching BDF. Using this work, engineers can choose the best method to forecast EUR after identifying the simulation case that is most analogous to their field wells. The VBA program and the matching procedure presented here can help engineers automate these methods into their forecasting sheets. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151124
Book Synopsis Regional Stratigraphy and Lithologic Characterization of the Tuscaloosa Marine Shale in Southwest Mississippi by :
Download or read book Regional Stratigraphy and Lithologic Characterization of the Tuscaloosa Marine Shale in Southwest Mississippi written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tuscaloosa Marine Shale (TMS) in southwest Mississippi and south-central Louisiana has potential to become a prolific source of fossil fuels using hydraulic fracturing technology. The objective of this study is to better understand the sequence and regional stratigraphy, lithology, and character of the TMS. Studying the TMSs lithologic, depositional, and diagenetic properties is essential to maximize potential production. Characterization of the eastern TMS was performed with cuttings from two wells provided by the Mississippi Oil and Gas Board through MDEQ, and two provided by the USGS. Thirty-one petrophysical logs were correlated, to make cross sections and trace sequence stratigraphic intervals within the TMS. Results of the study showed lithologic variability and compaction across the study area, and a sequence stratigraphic correlation of the highstand systems track between the Tuscaloosa and Eagle Ford Groups. This research aims to work toward the greatest potential of the TMS as an unconventional reservoir.
Book Synopsis Relationships Among Mineralogy, Geochemistry, and Oil and Gas Production in the Tuscaloosa Marine Shale by : Hayley Roxana Beitel
Download or read book Relationships Among Mineralogy, Geochemistry, and Oil and Gas Production in the Tuscaloosa Marine Shale written by Hayley Roxana Beitel and published by . This book was released on 2021 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Tuscaloosa Marine Shale (TMS) is an unconventional shale reservoir located in southeast Louisiana and southwest Mississippi. Limited mineralogical and geochemical data for the TMS have been published. The data that do exist indicate that the formation is heterogeneous. Consequently, previous investigators and oil and gas companies have not managed to effectively link mineralogical and chemical changes to oil and gas production in the TMS. These linkages are critical to establish for future exploration efforts. In this study, we attempt to establish these relationships by gathering all existing mineralogical and chemical data in the TMS, including newly acquired data from drill cuttings and comparing it to the volumes of oil, gas, and water production. The TMS is dominated by clay minerals with various amounts of quartz and calcite and smaller amounts of other minerals. Organic geochemical results suggest the presence of mixed type II and III kerogen. The variability of depositional environments influenced by proximity to depocenters, clastic influx, and sea level fluctuations, has led to a great deal of physical and chemical heterogeneity within the TMS. In most cases, comparisons of the mineral and geochemical data to production/drilling information show no obvious correlations. However, weak relationships are found between oil production and regions with lower amounts of total clay and higher amounts of quartz, and areas of higher TOC. The results of this study, and continued evaluation of these trends with new data, including the consideration of mechanical features such as natural fracturing, will be needed to further the understanding of what factors control production success in this unit"--Abstract, page iii.
Book Synopsis Decline Curve Analysis and Enhanced Shale Oil Recovery Based on Eagle Ford Shale Data by : Dieudonne K. Delaihdem
Download or read book Decline Curve Analysis and Enhanced Shale Oil Recovery Based on Eagle Ford Shale Data written by Dieudonne K. Delaihdem and published by . This book was released on 2014 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transient and fracture dominated flow regimes in tight permeability shale reservoirs with hydraulically fractured horizontal wells impose many unconventional challenges. These include execution of appropriate shale decline curve analysis and the optimization of hydrocarbons recovery. Additionally, short production profiles available are inadequate for accurate production decline analysis. This research assessed the effectiveness of Arps' decline curve analysis and recently established methods--power law exponential analysis, logistic growth analysis, Duong's method and the author's approach--to predict future production of horizontal wells in the Eagle Ford Shale. Simulation models investigated history matching, enhanced shale oil recovery, and drainage area beyond stimulated reservoir volume. Traditional Arps' hyperbolic method sufficiently analyzed past production rates, but inaccurately forecasted cumulative productions. The recent decline models show slight variations in their past performance evaluations and forecasting future production trends. The technique proposed and used in this work enhanced the successful application of Arps' hyperbolic decline from 32.5% to 80%. Simulation results indicate 4.0% primary oil recovery factor and 5.8% enhanced shale oil recovery factor using CO2 miscible injection. Based on pressure observed outside of the stimulated reservoir volume, limited to the range of data used in this study, drainage area outside stimulated reservoir volume is not significant.
Book Synopsis Mesozoic-Paleozoic Producing Areas of Mississippi and Alabama by : Mississippi Geological Society
Download or read book Mesozoic-Paleozoic Producing Areas of Mississippi and Alabama written by Mississippi Geological Society and published by . This book was released on 1957 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Using Decline Map Anlaysis (DMA) to Test Well Completion Influence on Gas Production Decline Curves in Barnett Shale (Denton, Wise, and Tarrant Counties) by : Ibrahim Alkassim
Download or read book Using Decline Map Anlaysis (DMA) to Test Well Completion Influence on Gas Production Decline Curves in Barnett Shale (Denton, Wise, and Tarrant Counties) written by Ibrahim Alkassim and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing interest and focus on unconventional reservoirs is a result of the industry's direction toward exploring alternative energy sources. It is due to the fact that conventional reservoirs are being depleted at a fast pace. Shale gas reservoirs are a very favorable type of energy sources due to their low cost and long-lasting gas supply. In general, according to Ausubel (1996), natural gas serves as a transition stage to move from the current oil-based energy sources to future more stable and environment-friendly ones. By looking through production history in the U.S Historical Production Database, HPDI (2009), we learn that the Barnett Shale reservoir in Newark East Field has been producing since the early 90's and contributing a fraction of the U.S daily gas production. Zhao et al. (2007) estimated the Barnett Shale to be producing 1.97 Bcf/day of gas in 2007. It is considered the most productive unconventional gas shale reservoir in Texas. By 2004 and in terms of annual gas production volume, Pollastro (2007) considered the Barnett Shale as the second largest unconventional gas reservoir in the United States. Many studies have been conducted to understand better the production controls in Barnett Shale. However, this giant shale gas reservoir is still ambiguous. Some parts of this puzzle are still missing. It is not fully clear what makes the Barnett well produce high or low amounts of gas. Barnett operating companies are still trying to answer these questions. This study adds to the Barnett chain of studies. It tests the effects of the following on Barnett gas production in the core area (Denton, Wise, and Tarrant counties): * Barnett gross thickness, including the Forestburg formation that divides Barnett Shale. * Perforation footage. * Perforated zones of Barnett Shale. Instead of testing these parameters on each well production decline curve individually, this study uses a new technique to simplify this process. Decline Map Analysis (DMA) is introduced to measure the effects of these parameters on all production decline curves at the same time. Through this study, Barnett gross thickness and perforation footage are found not to have any definite effects on Barnett gas production. However, zone 3 (Top of Lower Barnett) and zone 1 (Bottom of Lower Barnett) are found to contribute to cumulative production. Zone 2 (Middle of Lower Barnett) and zone 4 (Upper Barnett), on the other hand, did not show any correlation or influence on production through their thicknesses.
Book Synopsis Decline Curve Analysis for Horizontal Wells by : Min-Yu Shih
Download or read book Decline Curve Analysis for Horizontal Wells written by Min-Yu Shih and published by . This book was released on 1994 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production Decline Curves Using Data from California Oilfields by : Ralph V. Higgins
Download or read book Production Decline Curves Using Data from California Oilfields written by Ralph V. Higgins and published by . This book was released on 1971 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
