EOR is Gaining New Interest in Unconventional Basins as Economic Methods Emerge

The presentation examines how bottomhole assembly (BHA) design can change gas fraction, solids concentration, and pressure and velocity conditions at the pump intake—conditions that surface adjustments such as pumping speed, stroke length, and pump-off controls cannot change. It analyzes a six-year dataset of Bakken rod-pump wells, treating the BHA as a single hydraulic system rather than evaluating components individually. The comparison covers a conventional arrangement, where the tubing anchor restricts flow through the remaining casing annulus, and a flow-through arrangement that routes flow past the anchor using ported subs. The described design provides parallel internal and external flow paths for gas and liquid, with a higher-velocity solids section below the degassing section. For the evaluated configuration in 7-inch casing, the effective open area is 18.45 square inches, compared with 5.41 square inches for a conventional full-bore anchor; the source reports approximately 70% lower local superficial velocity. A six-year paired evaluation of more than 1,200 Williston rod-pumped wells found median fluid and gas increases of 17.5% and 23.3% among wells adopting the geometry, compared with same-configuration controls. The presentation also addresses where the response is most consistent—below approximately 300 BFPD—and the economics of making the change during a scheduled workover.

URTeC and the Offshore Technology Conference will be co-located while retaining distinct technical focuses. URTeC centers on unconventional resource development, with shared industry priorities that include capital efficiency, digital transformation, emissions reduction, and operational performance. Technical themes include operator case studies integrating geology, geophysics, geomechanics, completions, and reservoir engineering across exploration, appraisal, pilot testing, and development; advanced formation evaluation using well logs, core and fluid characterization, digital rock technologies, and petrophysical interpretation; geological and geophysical methods for prospectivity, acreage assessment, seismic imaging, reservoir characterization, and produced-water management; and geomechanics in well design, hydraulic fracturing, production, and refracturing. Other themes address geochemistry and fluid-rock interactions, including applications to geothermal energy and critical minerals; AI and data science for subsurface characterization, reserves estimation, drilling, completions, and production forecasting; enhanced recovery and restimulation, including gas and CO₂ injection, chemical agents, simulation, and field surveillance; and reserves estimation and production forecasting. Clean-energy topics include methane monitoring and mitigation, electrification, flaring reduction, geothermal development, infrastructure repurposing, helium and hydrogen, critical-mineral extraction, and produced-water treatment, reuse, and mineral recovery. Well-level interventions include remediation, sidetracks, artificial lift, diagnostics, and intervention economics.

The biennial symposium focuses on proven and emerging technologies for oil and natural gas development and production. Technical papers address commercially viable solutions to drilling, completion, and production engineering challenges. The 2027 theme, “Fueling the Future,” examines the industry’s role in providing low-cost, reliable energy as energy sources diversify. The program also includes events supporting a lower-carbon future, with goals of improving well and program economics, extending commercial success, and addressing environmental, social, and governance (ESG) considerations.

Themes cover CO₂ capture and transportation, including point-source capture, direct air capture, pipeline design, transport economics, and repurposing infrastructure; commercial and regulatory considerations, including pore-space access, UIC permitting, liability, and government support; and enhanced oil recovery and other CO₂ utilization. Technical themes include regional and site-focused subsurface characterization; reservoir-scale geologic, dynamic, geomechanical, and reactive-transport modeling; injection-well design and integrity; and testing and monitoring methods such as seismic and geochemical monitoring, leakage detection, and real-time analytics. CCUS frontiers include regional topics and adjacent applications involving hydrogen, data centers, and geothermal energy.

The lecture examines how zone permeability, fluid content, formation pressure—including reservoir recharge prediction—and caprock integrity inform subsurface isolation requirements and abandonment barrier placement. It addresses technical and operational challenges of well abandonment, including defining key isolation parameters when data is limited, what happens when an abandonment plan proves unworkable in practice, and cost implications and optimization opportunities. Case studies demonstrate collaboration between subsurface specialists, well engineers, and operators to develop a robust subsurface basis of design for abandonment. The presentation covers effective decision-making, risk-mitigation strategies, the benefits of engaging a subsurface team throughout the project, and a data-driven, risk-based approach to well decommissioning.

Examines how casing design has evolved from early load-case frameworks and why traditional tubular stress analysis can fall short in complex wells. Topics include HPHT wells, extended-reach drilling, multistage-fractured unconventionals, subsea wells with sealed annuli and trapped-annular risk, CO₂ injection for carbon capture and storage, and super-hot geothermal wells. The presentation addresses how incomplete or oversimplified pressure, temperature, and load descriptions contribute to tubular failures; the role of rigorous load cases in consistent design; and engineering judgment, model selection, and improved load modeling across well lifecycles.

The technical program covers the lifecycle of offshore energy projects, from exploration and development through production, maintenance, and decommissioning. Topics span offshore oil and gas, offshore wind, carbon management, hydrogen, marine resources, and technologies for operational efficiency, safety, reliability, and performance, including advanced materials, automation, robotics, artificial intelligence, and digital transformation. Program elements include the Opening General Session on energy demand, market dynamics, policy and regulation, offshore innovation, collaboration, and sustainability; panel and technical sessions; keynote presentations; the University R&D Showcase; and the Presentation Hub and Around the World Series. Executive Dialogues use a limited-participation, peer-to-peer format and address emerging technologies, policy and regulation, capital investment, market outlooks, energy transition strategies, workforce development, and energy demand and security. The Energy Evolution Exchange Pavilion features carbon capture and storage, offshore wind, hydrogen, marine resources, low-carbon solutions, and energy efficiency. URTeC is co-located with OTC, with distinct technical programs focused on offshore and unconventional resource development.

The workshop focuses on practical well integrity solutions across barrier design, remediation, qualification, and lifecycle risk management, emphasizing applications, new technologies, and process methodologies. Field lessons, technical perspectives, and interactive discussion connect engineering principles with real-world deployment challenges. Session topics include cement as a barrier, including establishing cement barriers in a complex onshore U.S. exploration well with a narrow pore-pressure/fracture-gradient window, cementing best practices, and wellbore cementing. Another session covers production-casing integrity risk management, detecting fluid- and cement-driven casing defects through the production life cycle, and artificial-lift decisions under wellbore constraints. An interactive case study has teams solve well integrity challenges and exchange lessons learned and best practices. Further topics include barrier qualification and P&A operations; rigless well integrity remediation; surveillance technology; integrated monitoring for CCS well integrity; corrosion and materials challenges in CCUS Class VI wells; thermal heavy-oil well design; quantitative risk analysis; DHSV strategies in subsea wells; FEP risk assessment using individual barrier evaluation; alternative barrier materials for conventional Australian well abandonments; Permian well integrity solutions; and sealants for flow through narrow pathways.

An intensive workshop on projected electricity demand and expanding the supply of natural resources used to generate power. Topics include natural gas, geothermal development and repurposing oil and gas assets; hydrogen, uranium, lithium and critical minerals; and water, environmental, storage, site-selection and regulatory considerations. Program discussions cover grid shortfalls and raw materials for electricity generation, solutions for increasing electricity supply, geothermal, and technology including ORC, sensors and small nuclear reactors. Other sessions address AI prompts for grid and behind-the-meter planning; lithium direct lithium extraction (DLE) and hydrogen technologies; regulatory and legislative factors affecting geothermal, critical minerals, low-carbon energy, grids and data centers; and mining and oil-and-gas intersections, including near-surface imaging and copper for electricity transmission. The program also includes an AI prompt clinic focused on water, the environment, science and regulations.