Missouri University of Science and Technology
Walden University
University of Mississippi
University of Massachusetts Amherst
Louisiana State University
Incoherency In Central American Hydroclimate Proxy Records Spanning The Last Millennium,
2023
Missouri University of Science and Technology
Incoherency In Central American Hydroclimate Proxy Records Spanning The Last Millennium, Jonathan Obrist-Farner, Byron A. Steinman, Nathan D. Stansell, Jeremy Maurer
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Continued Global Warming is Expected to Result in Reduced Precipitation and a Drier Climate in Central America. Projections of Future Changes Are Highly Uncertain, However, Due to the Spatial Resolution Limitations of Models and Insufficient Observational Data Coverage Across Space and Time. Paleoclimate Proxy Data Are Therefore Critical for Understanding Regional Climate Responses during Times of Global Climate Reorganization. Here We Present Two Lake-Sediment based Records of Precipitation Variability in Guatemala Along with a Synthesis of Central American Hydroclimate Records Spanning the Last Millennium (800–2000 CE). the Synthesis Reveals that Regional Climate Changes Have Been Strikingly Heterogeneous, even over Relatively …
Design And Performance Analysis Of Dry Gas Fishbone Wells For Lower Carbon Footprint,
2023
University of North Dakota
Design And Performance Analysis Of Dry Gas Fishbone Wells For Lower Carbon Footprint, Habib Ouadi, Aimen Laalam, Amjed Hassan, Abderraouf Chemmakh, Vamegh Rasouli, Mohamed Mahmoud
Petroleum Engineering Student Publications
Multilateral well drilling technology has recently assisted the drilling industry in improving borehole contact area and reducing operation time, while maintaining a competitive cost. The most advanced multilateral well drilling method is Fishbone drilling (FbD). This method has been utilized in several hydrocarbon fields worldwide, resulting in high recovery enhancement and reduced carbon emissions from drilling. FbD involves drilling several branches from laterals and can be considered as an alternative method to hydraulic fracturing to increase the stimulated reservoir volume. However, the expected productivity of applying a Fishbone well from one field to another can vary due to various challenges …
Evaluation Of Liquid Loading In Gas Wells Using Machine Learning,
2023
University of North Dakota
Evaluation Of Liquid Loading In Gas Wells Using Machine Learning, Abderraouf Chemmakh, Olusegun Stanley Tomomewo, Kegang Ling, Ahmed Shammari
Petroleum Engineering Student Publications
The inevitable result that gas wells witness during their life production is the liquid loading problem. The liquids that come with gas block the production tubing if the gas velocity supplied by the reservoir pressure is not enough to carry them to surface. Researchers used different theories to solve the problem naming, droplet fallback theory, liquid film reversal theory, characteristic velocity, transient simulations, and others. While there is no definitive answer on what theory is the most valid or the one that performs the best in all cases. This paper comes to involve a different approach, a combination between physics-based …
Applications Of Underbalanced Fishbone Drilling For Improved Recovery And Reduced Carbon Footprint In Unconventional Plays,
2023
University of North Dakota
Applications Of Underbalanced Fishbone Drilling For Improved Recovery And Reduced Carbon Footprint In Unconventional Plays, Habib Ouadi, Siamak Mishani, Vamegh Rasouli
Petroleum Engineering Student Publications
Fishbone Drilling (FbD) consists of drilling several micro-holes in different directions from the main vertical or deviated wellbore. Similar to multilateral micro-hole drilling, FbD may be used to enhance hydrocarbon production in naturally fractured formations or in refracturing operations by interconnecting the existing natural fractures. When combined with underbalanced drilling using a coiled tubing rig, FbD enhances the production further by easing the natural flow of the hydrocarbon from the reservoir to the wellbore. The design aspects of the Fishbones include determining the number, length, distance between the branches, and the angle of sidetracking of the branches from the main …
Seismic Azimuthal Anisotropy Beneath A Fast Moving Ancient Continent: Constraints From Shear Wave Splitting Analysis In Australia,
2023
Missouri University of Science and Technology
Seismic Azimuthal Anisotropy Beneath A Fast Moving Ancient Continent: Constraints From Shear Wave Splitting Analysis In Australia, Kailun Ba, Stephen S. Gao, Jianguo Song, Kelly H. Liu
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Seismic Azimuthal Anisotropy Beneath Australia is Investigated using Splitting of the Teleseismic PKS, SKKS, and SKS Phases to Delineate Asthenospheric Flow and Lithospheric Deformation Beneath One of the Oldest and Fast-Moving Continents on Earth. in Total 511 Pairs of High-Quality Splitting Parameters Were Observed at 116 Seismic Stations. Unlike Other Stable Continental Areas in Africa, East Asia, and North America, Where Spatially Consistent Splitting Parameters Dominate, the Fast Orientations and Splitting Times Observed in Australia Show a Complex Pattern, with a Slightly Smaller Than Normal Average Splitting Time of 0.85 ± 0.33 S. on the North Australian Craton, the Fast …
Coreflooding Evaluation Of Fiber-Assisted Recrosslinkable Preformed Particle Gel Using An Open Fracture Model,
2023
Missouri University of Science and Technology
Coreflooding Evaluation Of Fiber-Assisted Recrosslinkable Preformed Particle Gel Using An Open Fracture Model, Shuda Zhao, Ali Al Brahim, Junchen Liu, Baojun Bai, Thomas P. Schuman
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Recrosslinkable Preformed Particle Gels (RPPGs) Have Been Used to Treat the Problem of Void Space Conduits (VSC) and repair the "Short-Circuited" Waterflood in Alaska's West Sak Field. Field Results Showed a 23% Increase in Success Rates over Typical Preformed Particle Gel (PPG) Treatments. in This Paper, We Evaluated Whether Adding Fiber into RPPGs Can Increase the RPPG Plugging Efficiency and Thus Further Improve the Success Rate. We Designed Open Fracture Models to Represent vs.C and Investigated the Effect of Swelling Ratio (SR), Fracture Size, and Fiber Concentration on Gel Injection Pressure, Water Breakthrough Pressure, and Permeability Reduction. Results Show that …
Lysine Crosslinked Polyacrylamide─A Novel Green Polymer Gel For Preferential Flow Control,
2023
Missouri University of Science and Technology
Lysine Crosslinked Polyacrylamide─A Novel Green Polymer Gel For Preferential Flow Control, Tao Song, Baojun Bai, Yugandhara Eriyagama, Thomas P. Schuman
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Acrylamide-based polymer gels have been applied to control the preferential flow in the subsurface for decades. However, some commonly used crosslinkers, such as Cr (III) and phenol-formaldehyde, are highly toxic and are being phased out because of stringent environmental regulations. This work uses l-lysine as the green crosslinker to produce acrylamide-based polymer gels. This article systematically studied the effect of lysine and polymer concentration, salinity, pH, and temperature on gelation behavior and thermal stability. Besides, the gelation mechanism and crosslinking density were elucidated in this work. A high-permeability sandstone core was used to test the plugging efficiency of this novel …
Comprehensive Evaluation Of A Novel Re-Crosslinkable Preformed Particle Gel For The Water Management Of Reservoir With Concentrated Divalent Ions,
2023
Missouri University of Science and Technology
Comprehensive Evaluation Of A Novel Re-Crosslinkable Preformed Particle Gel For The Water Management Of Reservoir With Concentrated Divalent Ions, Tao Song, Mohamed Ahdaya, Zhanmiao Zhai, Thomas P. Schuman, Baojun Bai
Chemistry Faculty Research & Creative Works
As one of the most widely used technology to ameliorate the reservoir's heterogeneity, polymer gels have been applied for more than 60 years. However, how to plug fractured reservoirs with significant abnormal features, high temperature and high salinity, especially the divalent cations, is still a challenging target. This work systematically evaluated a novel salt-resistant re-crosslinkable preformed particle gel (SR-RPPG) designed for fractured reservoirs with excellent salt resistance (up to 5 % CaCl2). We evaluated the swelling kinetics, thermal stability and plugging efficiency of this SR-RPPG. We assessed the swelling kinetic and re-crosslinking behavior of the SR-RPPG through the …
Measurement Of Volumetric Deformation, Strain Localization, And Shear Band Characterization During Triaxial Testing Using A Photogrammetry-Based Method,
2023
Missouri University of Science and Technology
Measurement Of Volumetric Deformation, Strain Localization, And Shear Band Characterization During Triaxial Testing Using A Photogrammetry-Based Method, Sara Fayek, Xiong Zhang, Xiaolong Xia, Qingqing Fu, Jeffrey D. Cawlfield
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Triaxial Testing Has Been Routinely Used as a Standard Laboratory Test that Allows Correct Determination of Soil Characteristics. Previously the Volumetric Strain of the Triaxial Specimen Was Considered to Be Uniformly Distributed Along with the Specimen during the Isotropic and Deviatoric Loading. Although This Assumption Might Hold True under Isotropic Loading, the Effects of Restrained Ends and Disturbance during the Procedures of Specimen Installation and Testing Can Cause Nonuniform Strains throughout the Whole Specimen. This Paper Investigates the Effects of Specimen Preparation and Misalignment on the Strain Uniformity Along with the Soil Specimen during Triaxial Testing. a Series of Consolidated …
Finite Line Relief Well System Design For Dams And Levees,
2023
Missouri University of Science and Technology
Finite Line Relief Well System Design For Dams And Levees, Andrew M. Keffer, Erich D. Guy, Katherine R. Grote
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
An Analytical Method is Commonly Used to Design Relief Well Systems by Assuming the Well Line Extends an Infinite Distance Parallel to the Dam or Levee. This Assumption May Be Met in Some Cases, But When a Well Line is of Finite Length, This Can Severely Underestimate Excess Heads. Although These Consequences Have Been Historically Recognized, a Practical Graph-Based Analytical Approach for Finite Well Line Design Has Not Been Developed. Finite Well Lines Exist and Continue to Be Installed at Many Locations, So This Study Developed a Practical Design Method for Such Systems. Analytical Solutions and Numerical Models Were Used …
The Taphonomic Character, Occurrence, And Persistence Of Upper Permian–Lower Triassic Plant Assemblages In The Mid-Paleolatitudes, Bogda Mountains, Western China,
2023
Missouri University of Science and Technology
The Taphonomic Character, Occurrence, And Persistence Of Upper Permian–Lower Triassic Plant Assemblages In The Mid-Paleolatitudes, Bogda Mountains, Western China, Robert A. Gastaldo, Mingli Wan, Wan Yang
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
The Bogda Mountains, Xianjiang Uygur Autonomous Region, Western China, Expose an Uppermost Permian–Lower Triassic Succession of Fully Continental Strata Deposited Across Three Graben (Half Graben) Structures in the Mid-Paleolatitudes of Pangea. a Cyclostratigraphy Scheme Developed for the Succession is Subdivided into Three Low-Order Cycles (Wutonggou, Jiucaiyuan, Shaofanggou). Low-Order Cycles Are Partitioned into 1838 High-Order Cycles based on Repetitive Environmental Changes, and their Plant Taphonomic Character is Assessed in . 4700 M of High-Resolution, Measured Sections Distributed Across ~ 100 Km. Four Taphonomic Assemblages Are Represented By: Permineralized Wood (Both Autochthonous and Allochthonous), Megafloral Adpressions (?parautochthonous and Allochthonous) Identifiable to Systematic …
Analyzing Spatio-Temporal Mechanisms Of Land Subsidence In The Parowan Valley, Utah, Usa,
2023
Missouri University of Science and Technology
Analyzing Spatio-Temporal Mechanisms Of Land Subsidence In The Parowan Valley, Utah, Usa, Jiawei Li, Ryan G. Smith, Katherine R. Grote
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Parowan Valley, Utah (USA), is an agricultural region experiencing rapid subsidence due to extensive groundwater extraction from aquifers with a significant portion of fine-grained sediments. To analyze the subsidence spatio-temporally, time-series Interferometric Synthetic Aperture Radar (InSAR) of 155 Sentinel-1 C-band scenes were processed. These data showed approximately 30 cm of ground subsidence in Parowan Valley from 2014 to 2020. Because of the high temporal sampling rate of the Sentinel-1 satellite (12-day cycle), it is possible to determine the seasonal changes of ground deformation and relate this to groundwater extraction. To better understand the relationship between ground deformation and groundwater extraction …
Microcrystalline Dolomite In A Middle Permian Volcanic Lake: Insights On Primary Dolomite Formation In A Non-Evaporitic Environment,
2023
Missouri University of Science and Technology
Microcrystalline Dolomite In A Middle Permian Volcanic Lake: Insights On Primary Dolomite Formation In A Non-Evaporitic Environment, Xin Jiao, Yi Qun Liu, Wan Yang, Hong Li, Zi Yuan Meng, Min Ru Zhao, Zhe Xuan Li
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Lacustrine dolomite nucleation commonly occurs in modern and Neogene evaporitic alkaline lakes. As a result, ancient lacustrine microcrystalline dolomite has been conventionally interpreted to be formed in evaporitic environments. This study, however, suggests a non-evaporitic origin of dolomite precipitated in a volcanic–hydrothermal lake, where hydrothermal and volcanic processes interacted. The dolomite occurs in lacustrine fine-grained sedimentary rocks in the middle Permian Lucaogou Formation in the Santanghu intracontinental rift basin, north-west China. Dolostones are composed mainly of nano-sized to micron-sized dolomite with a euhedral to subhedral shape and a low degree of cation ordering, and are interlaminated and intercalated with tuffaceous …
Electrical Resistivity Tomography Revealing Possible Breaching Mechanism Of A Late Pleistocene Long-Lasted Gigantic Rockslide Dam In Diexi, China,
2023
Missouri University of Science and Technology
Electrical Resistivity Tomography Revealing Possible Breaching Mechanism Of A Late Pleistocene Long-Lasted Gigantic Rockslide Dam In Diexi, China, Lanxin Dai, Xuanmei Fan, Dan Wang, Fanyu Zhang, Ali P. Yunus, Srikrishnan Siva Subramanian, J. David Rogers, Hans Balder Havenith
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Landslide damming is a widespread phenomenon worldwide and significantly affects the evolution of fluvial landscapes. However, it is rarely witnessed from an antiquities perspective, and the case for observing their internal structure is challenging. We attempt to visualize the subsurface structure and understand the likely breaching mechanism of the late Pleistocene Diexi gigantic landslide dam (longevity of ~ 10 ka), using electrical resistivity tomography (ERT) method. Eight ERT measurements on the Diexi dam body revealed high resistivity zones near the periphery and lower resistivity zones in the middle portion of the profiles. Geomorphological mapping based on the LiDAR data determined …
Utilizing Date Pits In Microencapsulation: Effect Of Different Variations On Probiotic Survivability Under In Vitro Digestion,
2022
United Arab Emirates University
Utilizing Date Pits In Microencapsulation: Effect Of Different Variations On Probiotic Survivability Under In Vitro Digestion, Asmaa Samir Al Hamayda
Theses
This work deals with the medicinal use of date pit powder, which turns it from a waste product to a useful stabilizer for the release of beneficial probiotics in the human intestine. The main objective of this work is to encapsulate probiotics with date pit beads and their subsequent release in the human intestine. The beads were formed using gravitational dripping technique, while INFOGEST protocol was used to test the digested beads and the release of viable probiotic cells. For the three date varieties Raziz, Naghal and Khadrawy, it was found that 0.1 g of date pit powder per 0.2 …
Mantle Dynamics Of The North China Craton: New Insights From Mantle Transition Zone Imaging Constrained By P-To-S Receiver Functions,
2022
Missouri University of Science and Technology
Mantle Dynamics Of The North China Craton: New Insights From Mantle Transition Zone Imaging Constrained By P-To-S Receiver Functions, Lin Liu, Stephen S. Gao, Kelly H. Liu, William L. Griffin, Sanzhong Li, Siyou Tong, Jieyuan Ning
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Cratons are generally defined as stable continental blocks with a strong cratonic root that typically is at least ∼200 km thick. Many cratons have undergone little internal tectonism and destruction since their formation, but some of them, such as the eastern part of the North China Craton (NCC), the Dharwar Craton and the Wyoming Craton, have lost their thick cratonic root and become reactivated in recent geological history, leading to widespread Meso-Cenozoic volcanisms. The mechanisms responsible for such decratonization remain debated. To provide new constraints on models leading to decratonization, in this study we stack 612 854 source-normalized P-to-S conversions …
Long-Time Kinetic Impact On Key Factors Affecting Asphaltene Precipitation,
2022
Missouri University of Science and Technology
Long-Time Kinetic Impact On Key Factors Affecting Asphaltene Precipitation, Ato Kwamena Quainoo, Abdulmohsin Imqam
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
The employment of predictive techniques combining kinetic and thermodynamic analyses is the succinct solution to effectively control asphaltene precipitation during crude oil production. Although thermodynamic processes and conditions have been well studied in the literature, the effect of long-time kinetics on the key factors affecting the precipitation of asphaltenes was not critically studied. This work employed a model oil for asphaltene precipitation long-time kinetic observations. Filtration and confocal microscopy experimentations for time periods of 0-7200 min were utilized to study asphaltene yields and sizes at room and high temperatures (25, 50, and 70 °C), rotation speeds (60 and 150 rpm), …
A Comprehensive Review Of Experimental Evaluation Methods And Results Of Polymer Micro/Nanogels For Enhanced Oil Recovery And Reduced Water Production,
2022
Missouri University of Science and Technology
A Comprehensive Review Of Experimental Evaluation Methods And Results Of Polymer Micro/Nanogels For Enhanced Oil Recovery And Reduced Water Production, Junchen Liu, Abdulaziz Almakimi, Mingzhen Wei, Baojun Bai, Ibnelwaleed Ali Hussein
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
In recent years, polymer micro/nanogels which are re-crosslinked polymers with 3D networks, have attracted a lot of interest in Enhanced Oil Recovery (EOR) field. In size of micro/nanometers, these gel particles are designed to be conformance control agents for in-depth fluid diversion, and various experimental research have been undertaken to investigate the possibilities of applying micro/nanogels in oilfield. However, it is still unclear that how to utilize micro/nanogels to their full potential in oilfield because the transport mechanisms and EOR mechanisms of micro/nanogels are not well studied currently. By reviewing experimental evaluations and corresponding results of micro/nanogels, including evaluation of …
Laboratory Evaluation Of A Novel Self-Healable Polymer Gel For Co2 Leakage Remediation During Co2 Storage And Co2 Flooding,
2022
Missouri University of Science and Technology
Laboratory Evaluation Of A Novel Self-Healable Polymer Gel For Co2 Leakage Remediation During Co2 Storage And Co2 Flooding, Tao Song, Zhanmiao Zhai, Junchen Liu, Yugandhara Eriyagama, Mohamed Ahdaya, Adel Alotibi, Ze Wang, Thomas P. Schuman, Baojun Bai
Chemistry Faculty Research & Creative Works
For CO2 storage in subsurface reservoirs, one of the most crucial requirements is the ability to remediate the leakage caused by the natural fractures or newly generated fractures due to the increasing pore pressure associated with CO2 injection. For CO2 Enhanced Oil Recovery (EOR), high conductivity features such as fractures and void space conduits can severely restrict the CO2 sweep efficiency. Polymer gels have been developed to plug the leakage and improve the sweep efficiency. This work evaluated a CO2 resistant branched self-healable preformed particle gel (CO2-BRPPG) for CO2 plugging purpose. This …
Crustal Structure And Subsidence Mechanisms Of The Williston Basin: New Constraints From Receiver Function Imaging,
2022
Missouri University of Science and Technology
Crustal Structure And Subsidence Mechanisms Of The Williston Basin: New Constraints From Receiver Function Imaging, Jianguo Song, Stephen S. Gao, Kelly H. Liu, Muchen Sun, Youqiang Yu, Fansheng Kong, Kevin Mickus
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Mechanisms responsible for the long-term subsidence of intracontinental basins such as the Williston Basin in North America remain enigmatic, partly due to the thick sedimentary layer commonly found in the basins that prevents reliably imaging the deep crustal and upper mantle structures using some of the most-commonly employed seismic methods such as receiver function analysis. In this study, we used receiver functions recorded by 274 USArray and other stations in the Williston Basin and adjacent areas to investigate the layered structure of the crust in the hydrocarbon-rich intracontinental basin. After the removal of strong reverberations on the receiver functions associated …
