MAYLIN CARRIZALES
Katy,TX
Summary
Senior Reservoir Engineer and strategic leader with expertise in optimizing unconventional reservoir performance, and driving field development through advanced evaluation and planning techniques. Skilled in production forecasting, numerical simulations, and creating impactful development plans that align with organizational goals. Demonstrated success in leading cross-functional teams, delivering data-driven insights, and mentoring early-career engineers for long-term success. Recent focus on developing robust strategic scenarios for budgeting and long-range planning.
Overview
15
15
years of professional experience
Work History
Director, L48 Strategy & Portfolio Management
ConocoPhillips
Houston, USA
08.2021 - Current
- Conducted portfolio analysis and optimization aligned with total L48 and strategic objectives.
- Led evaluation and benchmarking of planning tools, enhancing Permian asset planning processes using ValNav for production forecasting.
- Performed competitor analysis identifying efficiency improvement opportunities, providing data-driven recommendations for business initiatives.
- Delivered strategic and economic recommendations to senior management, creating content for internal and external presentations.
- Conducted studies on breakevens across various levels, assessing impacts from multiple factors.
- Executed benchmarking studies comparing Cost of Supply against external evaluations for enhanced insights.
- Led 2022 and 2023 Drilling Lookback for L48 unconventional assets, evaluating capital and production performance.
- Presented key L48 performance metrics to the ELT and Board of Directors based on thorough economic assessments.
Staff Reservoir Engineer
ConocoPhillips
Houston, USA
04.2019 - 07.2021
- Ensuring cross-functional integration on the plan of development for the Permian asset.
- Responsible for developing/modeling production, capital and operating costs forecast for Long Range Plan (LRP) for the Delaware Basin. Evaluated alternative development scenarios to meet specific strategic goals.
- Provided support for DRTS updates for the Permian while documenting variances.
- Worked with an extended multidisciplinary team to establish and deliver business milestones while identifying possible threats and mitigation opportunities to execute short and long-term development plans.
- Provided economic analysis and technical support, as needed, for AFEs, acquisitions, divestitures, and interest purchases.
- Implemented and refined Enersight modeling of the Delaware Basin execution strategy allowing us to identify risks to production and cost forecast integrating near-term tactical decisions, D&C execution and operations performance with complex sales contracts.
- Mentored coworkers to use planning tools in the Permian and through the yearly planning processes to facilitate skills transition and work continuity.
Senior Reservoir Engineer
ConocoPhillips
Houston, USA
06.2015 - 11.2018
- Responsible for generating Type Curves and provide LRP risking and development scenario inputs for different formations in the Red Hills area in the Delaware Basin accounting for different well lengths and completion designs.
- Evaluated COP and competitor well performance though production diagnostics and RTA and identified production enhancement opportunities like impact of tighter cluster spacing. Worked closely with the implementation team through the design, flowback and evaluation of the first 20' CS test in the Delaware for COP.
- Provided production forecasts using Numerical Simulation and DCA techniques and used both competitor benchmarking and probabilistic workflows to anchor expectations.
- Provided input for the data acquisition program to improve reservoir characterization and well performance understanding, influencing spacing/stacking tests, and completion design optimization.
- Developed workflows and evaluated new tools available to enhance well performance predictions, while mentoring early-career reservoir engineers.
- Developed the first integrated numerical simulation model for the Red Hills area in the DB, enhancing reservoir characterization and production predictions.
- Conducted production optimization studies to identify additional reserves of hydrocarbons.
- Assessed the potential of the Bone Spring 2nd Sand based on offset performance and economic analyses that led to the starting development of the target, adding more than 100 locations to remaining inventory and resources into the plan.
- Designed workflows leveraging geomechanics and coupled flow modeling, with detailed fracture description, to optimize well performance and mitigate parent-child degradation.
- Coordinated the design and implementation of pilot projects to test the impact of parent/child degradation.
- Provided support to evaluate options for artificial lift in the Delaware, and well design's impact on rates.
- I represented the Permian Shale group in multiple knowledge shares, the UR symposium, the COP simulation tool development advisory committee, and led the UR Production Analysis workgroup.
Senior Reservoir Engineer
ConocoPhillips
Houston, USA
05.2013 - 05.2015
- Conducted Production Analysis for wells in the Bakken to estimate completion parameters, reservoir parameters, and to identify flow regimes.
- Integrated RTA results into numerical simulation models to perform assisted history matching and evaluated future spacing scenarios for the Bakken/Three Forks reservoirs.
- Performed probabilistic workflows to assess the potential of the Permian Delaware Basin multiple stacked formations.
- Represent company interests in joint industry projects and technology development consortiums.
- Mentored early career Reservoir Engineers in the use of COP proprietary tools for reservoir simulation and uncertainty analysis (SMART-SPARK).
- Taught the internal Early Life Cycle Workflow class to exploration and BU Reservoir Engineers.
- Identified and evaluated new technologies, methodologies, and tools to analyze well and reservoir performance in unconventionals with analytical models and through numerical simulation.
Reservoir Engineer
ConocoPhillips
Houston, USA
05.2011 - 04.2013
- Integrated production analysis, numerical simulation, and reservoir description to interpret fluid flow characteristics, stimulation effectiveness and reservoir performance drivers in unconventional reservoirs:
Applying advanced production analysis techniques to develop standard workflows.
Performing material balance, volumetric analysis, and decline analysis.
Analyzing single/multi-phase flow under reservoir conditions and fluid recovery under primary depletion.
Evaluating PVT analysis results.
Use decision risk analysis. - Designed interference tests, tracer test and interpretation of response.
- Interpreted production performance from the Stocker pilot in the Barnett and provided insights on the fracture geometry driving the horizontal wells response confirmed by the Microseismic and production logs response.
- Conducted sensitivity analyses on various reservoir parameters to determine their impact on production rate.
Education
Ph.D. - ENGINEERING - PETROLEUM
UNIVERSITY OF TEXAS
2010
Skills
- Business planning
- Economic evaluations
- Best practices implementation
- Forecasting and reporting
- Field development planning and optimization
- Process optimization
- Reservoir simulation and history matching
- Advanced production analysis
- Performance assessments
- Work planning and prioritization
- Problem solving
- Strategic planning
- Data analysis
Assessed Skills
- Geoscience Awareness, Proficient
- Geomechanics, Proficient
- Formation Evaluation, Basic Application
- Rock Properties, Basic Application
- Fluid Sampling, Basic Application
- Fluid Properties, Expert
- Volumetrics & Geomodelling, Proficient
- Reservoir Analogs and Databases, Expert
- Reservoir Drive Mechanisms & Material Balance Techniques, Proficient
- Production Forecasting Using Decline Curves, Proficient
- Well Type and Completions, Proficient
- Reservoir Simulation - Initialization & History Matching, Proficient
- Reservoir Simulation - Performance Prediction, Proficient
- Non-conventional Resources, Proficient
- Heavy Oil / Thermal Developments, Proficient
- EOR Awareness, Proficient
- Field Development - Exploration, Proficient
- Field Development - Appraisal, Proficient
- Field Development - Development, Proficient
- Field Development - Waterfloods, Basic Application
- Well Test Design, and Analysis, Basic Application
- Reservoir Surveillance and Field Optimization, Basic Application
- Uncertainty Analysis, Proficient
- Economics and Unitization / Commercial Agreements, Proficient
- Reserves Determination, Basic Application
- Corporate Approval Process, -AFF-Authorization for Feed; AFD -Authorization for Develop, Awareness
- Interface and Handoff to Drilling & Facilities, Awareness
Accomplishments
- US Patent: Lateral Wellbore Configurations with Interbedded Layer. 10/2017
- ConocoPhillips Spirit Award 2017 Recipient : Blueberry/Montney Innovation Acceleration
- ConocoPhillips Spirit Award 2020 Recipient: Asset Trajectory Model
Timeline
Director, L48 Strategy & Portfolio Management
ConocoPhillips
08.2021 - Current
Staff Reservoir Engineer
ConocoPhillips
04.2019 - 07.2021
Senior Reservoir Engineer
ConocoPhillips
06.2015 - 11.2018
Senior Reservoir Engineer
ConocoPhillips
05.2013 - 05.2015
Reservoir Engineer
ConocoPhillips
05.2011 - 04.2013
Ph.D. - ENGINEERING - PETROLEUM
UNIVERSITY OF TEXAS