Sheridan Rose Mullen · 2019-11-17 · Sheridan Rose Mullen . 5395 S Marshall St • Denver, CO 80123 • Phone: (307) 262-0865 • Sheridan.Mullen@ hotmail.com . Goal_____ Seek challenging

Sheridan Rose Mullen 5395 S Marshall St • Denver, CO 80123 • Phone: (307) 262-0865 • [email protected]

Goal_________________________________________________________________________ Seek challenging entry level position in the petroleum industry which will utilize and grow my diverse geological skill sets.

Education_____________________________________________________________________

August 2017- May 2019 University of Oklahoma, Norman, OK Master of Science Geology, Advisor: Dr. Doug Elmore – GPA 4.0/4.0

August 2013- May 2017 University of Oklahoma, Norman, OK Bachelor of Science Petroleum Geology- GPA 3.44/4.0 Dean’s List: 2014, 2015, 2016, 2017

Thesis ________________________________________________________________________

Title Deltaic Sedimentation and Stratigraphy of the Late Cretaceous Frontier Formation in the Southeast Bighorn Basin, Wyoming

Description Developed a sequence stratigraphic framework for the marine sandstones of the Frontier Formation and define the petroleum systems in the Southeastern Bighorn Basin. Measure and describe surface sections and correlate to subsurface logs, mapping depositional trends and stratigraphic facies. Using Petra software map a 43 township area and over 700 wells to define sandstone geometries and depositional patterns. Evaluate the influence of paleo-tectonic features and their control on sedimentation.

Academic Work Experience______________________________________________________

Summer 2019 Geology Intern, at BPX Energy in Denver, Colorado. Project entailed using StarSteer to resteer 32 existing, newly acquired Eagle Ford wells. Developed a complete subsurface review of project area to integrate with reservoir engineering intern and put together a complete drill-ready plan to maintain at-risk leases. Hi-resolution geosteering interpretations were input into DSG to augment a focused structural and stratigraphic framework in DSG.

Summer 2018 Geology Intern, at Mustang Fuel Corporation in Oklahoma City, Oklahoma. Project entailed using GeoGraphix software for well log correlation, mapping, of gross sand and net pay intervals within the Pennsylvanian Atoka Formation over 6 Townships in the Arkoma Basin, Oklahoma. Conducted volumetric calculations to define drainage efficiency in existing wells and illustrate upside potential. Presented final work and recommendations to the entire development team and the CEO of the company.

2016-2017 Tutoring, Invertebrate Paleontology, Structural Geology, Intro to Geology, Sedimentary Petrology, Igneous and Metamorphic Petrology, Depositional Systems and Stratigraphy, and Petroleum Geology

May 2016 Field Trip Teaching Assistant, University of Oklahoma’s Bartell Field Camp In charge of driving, answering student’s questions and telling students about their future classes

August 2014-May 2015 Undergraduate Research Assistant Reservoir Characterization and Modeling Laboratory, University of Oklahoma Supervisor: Dr. Matthew Pranter Acquired elemental data for Mississippian Limestone cores from northern Oklahoma using the Thermo Scientific Niton® XL3t 950 x-ray fluorescence (XRF) portable handheld analyzer

Contacts for Recommendation___________________________________________________

Evelyn Goebel Julian Michaels Jason McKirahan Mentor during BPX Internship Stand-in Mentor at BPX Internship Supervisor at Mustang Fuel Internship [email protected] [email protected] [email protected] 346-254-5031 405-215-4469 405-748-9473

Course Work__________________________________________________________________

Short Courses: ExxonMobil Bighorn Basin Field School, one of 25 students selected nationally to attend. Focused on structure, stratigraphy and the petroleum system.

Graduate Classes Completed: Intro to Reservoir Characterization, Structural Geology for Petroleum Exploration and Production I, Paleomagnetism/Diagenesis/Depositional Environment Seminar, Unconventional Resource Shales, Applied Sequence Stratigraphy, Basin Analysis for Oil and Gas, Clastic Facies, Intro to Seismic Stratigraphy, and Fundamentals of Remote Sensing

Undergraduate Classes Completed: Mineralogy, Structural Geology, Sedimentary Petrology, Igneous/ Metamorphic Petrology, Invertebrate Paleontology, Seismic Exploration, Depositional Systems and Stratigraphy, Petroleum Geology, Global Geophysics, Subsurface Methods, Into to Field Methods, and Field Methods

Study Abroad in Italy: Geology of Italy

Skills and Qalifications__________________________________________________________

Experience with Petra, GeoGraphix, Petrel, Decision Space (DSG), and StarSteer Proficient in Microsoft Word, Excel, and PowerPoint Knowledge of well-log analysis in educational and applied settings

Awards_______________________________________________________________________

2018-2019 A. Rodger Denison Endowed Scholarship 2018 Oklahoma Geological Foundation Frederick H. and Lois M. Kate Fellowship 2017 Oklahoma Geological Foundation Frederick M. Black Field Camp Grant 2017 Mewbourne Family Support Scholarship 2017 Charles W Harper Field Camp Scholarship 2017 Walter and Claire Bork Endowed Scholarship 2016- 2017 School of Geology and Geophysics Endowed Scholarship 2016- 2017 Mewbourne Family Support Scholarship 2015- 2016 Oklahoma Energy Resources Board (OERB) Scholarship 2015- 2016 Thomas Mairs Memorial Scholarship 2015- 2016 Walter and Claire Bork Endowed Scholarship 2015 CPSGG Trailblazer Society Scholarship 2014- 2015 Oklahoma Energy Resources Board (OERB) Scholarship 2014- 2015 Hubert E Clift Memorial Scholarship 2014- 2015 Houston Oil and Minerals Scholarship 2013-2014 Patrick K Sutherland Memorial Scholarship 2013- 2017 The J. David and Jane Love Scholarship for Applied Geological Sciences Affiliations____________________________________________________________________

August 2013- May 2019 Pick and Hammer Club, President 2016-2018 August 2013- present American Association of Petroleum Geologists (AAPG) January 2017- present Geological Society of America (GSA) January 2019- present Society for Sedimentary Geology (SEPM) May 2019- present Rocky Mountain Association of Geologists (RMAG)

ABSTRACT

Deltaic Sedimentation and Stratigraphy of the Late Cretaceous Frontier Formation in the Southeast Bighorn Basin, Wyoming

Regional subsurface mapping of the Cretaceous Frontier Formation indicates that it was deposited as discrete deltaic lobes within the Cretaceous Western Interior Seaway (KWIS). The source of sediment was to the west and the deltas prograded eastward in four separate sequences that comprise four Frontier packages. Detailed mapping of over 700 wells in an area of over 43 townships centered around Worland, Wyoming, indicates that sands form distinct delta lobes that prograde from west to east and shift north to south due to differential compaction of underlying sediment. Lobe shifting is apparent between sequences as well as between smaller delta parasequence sets within the major sequences. Sedimentation is also affected by localized tectonics, principally faulting, that causes sediment thins on upthrown blocks. The most apparent tectonic features in the mapped area are the Tensleep fault and the Worland fault, both causing thins in the Fourth Frontier sequence.

Measured surface sections tie directly with adjacent wells and show the stacking relationships of Frontier delta sequences. Four facies observed in the measured sections were 1) silt and mudstones, 2) bentonites, 3) dirty (clay-rich), bioturbated, planar laminated, very fine to fine-grained sands, and 4) thick, amalgamated, cross-bedded sands sometimes capped by coarser grains and chert pebbles. Each Frontier sequence shows a distinct prodelta sequence grading into a lower shoreface sequence, and then into an upper shoreface sandstone. No fluvial sequences were observed in outcrop within the study area. Maximum flooding sequences observed on logs are typically buried in outcrop sections but are easily correlated on logs to provide a regional sequence boundary. Progradation and clinoform geometry appear to be related to eustatic sea-level changes, sediment supply, and subsidence.

Finally, a sequence stratigraphic analysis was performed in a grid over the study area to see the deltaic lobe stacking relations. The grid consists of four cross sections, three dip sections oriented west-east across the study area and one strike section oriented north-south, tying the dip sections. The three dip sections are evenly spaced over the area of interest and the strike section utilizes at least one well from each of the dip sections. After the cross sections were chronostratigraphically correlated, the logs were converted to V-Shale logs to give a better idea of sand-shale distributions as well as depositional facies. In the sequence stratigraphic sections, the building of the delta lobes is clearly evident along with the differential compaction between the different delta lobes causing the deltas to shift back and forth over this portion of the basin.

Index Map of project area and Stratigraphic section of the Bighorn Basin

Gross sand isopach map of the Fourth Frontier.

Gross sand isopach maps of the Third Frontier.

Cross Section Index Map and Type log of sequence stratigraphic interpretation of systems tracts (parasequence sets).

Cross-section A-A’ and southernmost dip section along Neiber Anticline

Cross-section B-B’ and only strike section trending north to south along eastern margin of study area