Injection of produced water for pressure support or disposal has always been challenging, in view of water quality and its potential negative effects. Achieving optimum and sustained injectivity throughout life-of well in a cost-effective manner are key objectives. This session addresses various efforts that have been implemented (successfully or not) in an attempt to achieve this desired objective. Discussions will center on fields results that may include process changes, new procedures, pilot tests, analyses, simulation and/or modelling. Furthermore, PWRI wells’ Injectivity restoration procedures and processes through stimulation will be addressed in this session.

Session Chairpersons: Per Einar Svela, Equinor; Max Baumert, ExxonMobil

Speakers:

• High Rate PWRI at Johan Sverdrup - When Injectors Fight Back
   Liv Omdal, Equinor
• Produced Water Injection Management in a Mature Waterflood – More Throughput is Not Always More Oil
   Cody Keith, Jenny Sutton, ConocoPhillips
• Mechanical Well Stimulation: Experience with Geomechanical Pulse
   Emilio Paulo, Petrobras

Whatever the model used to understand, model, and predict the injectivity of water injectors, its validation is always difficult because it is confronted with the lack of real field data such as pressures, temperatures, water quality, flow rate, flow conformance, for example. This is often true for deep water wells because each intervention to carry out a PLT or a simple thermometry to determine the flow conformance, could be long and expensive. One way to validate these models is to carry out laboratory tests under controlled conditions and different scales (centimetric to metric under stress or not) and under various injection regimes (matrix and/or frac). This is particularly interesting when dealing with unconsolidated reservoirs, which in addition to the validation of the models, original tests carried out in the laboratory should allow understanding of their behavior particularly in terms of frac and improving the physics implemented in the models which is still unknown. This session is dedicated to present and discuss this type of lab work and modelling approaches.

Session Chairpersons: Claudio Furtado, Petrobras; George K. Wong, University of Houston

Speakers:

• Injectivity in PWRI Projects: From the Lab to the Field Scale
   Adriano Santos, The Federal University of Rio Grande do Norte (UFRN)
• Laboratory Experiments and Field Tests for Damage Remediation During Produced Water Reinjection
   Claudio Furtado, Petrobras
• Predicting Filtration Coefficient and Damage Factor for Particle Flow in Porous Media using Machine Learning
   George K. Wong, University of Houston

Carlos Tapia Director, Integrated Energy Independent Project Analysis, Inc

Carlos is Director of IPA’s Integrated Energy Practice. In this role, he leads IPA’s energy business initiatives by helping integrated energy companies, national oil companies, and independent operators deliver competitive capital project opportunities. His responsibilities include providing global energy business leaders with unbiased facts, data analytics, and research-based advice to deliver sustainable returns on both traditional and alternative energy projects (e.g., lower carbon technologies; carbon capture, utilization, and storage [CCUS]; renewables; etc.). 
 

This session focuses on the best practices for optimizing injector well performance. Topics related to optimum drilling and completion program, ability to inject above fracture pressure, injection system availability with high water quality together with surveillance and analysis-driven ramp-ups to target injection rates are covered.

Session Chairpersons: Feng Liang, Woodside, Bulent Izgec, HESS

Speakers:

• Fiber Optic Surveillance (DAS, DTS and DSS) of Fracturing and Fluid Circulation in a Geothermal Injector - Producer Well Pair
   Mukul Sharma, The University of Texas at Austin
• Managing Water Injection in a Deepwater GOA Compartmentalised Oil Asset
   Debbie Gana, Woodside
• Surveillance of Matrix Injection with OHSAS Horizontal Injectors
   Duane Mikulencak, Shell

Ensuring injection operations for pressure maintenance or waste disposal remain within the target injection domain has important implications: economically by providing better sweep efficiency leading to less injectors, operationally through the ability to inject safely, and reducing environmental impact providing support on license to operate. Injection geomechanics provides insights into injector performance and injectivity, which depends on effective stress affecting rock deformations and fluid flows around the wellbore region and in the reservoir. This helps us improve completion design, predict fracture extension over time, prevent injector failures, and deliver safer operating guidelines for fluid containment. Methods to ensure containment, surveillance to track and verify containment as well as cases where containment is/was challenging, will be presented.

Session Chairpersons: Duane Mikulencak, Shell; Amr El-Fayoumi, Chevron

Speakers:

• Crane County Brine Release Causality Analysis
   B. Max Baumert, ExxonMobil
• Induced Sanding Due to Crossflow Impact on Injectors
   Karim Zaki, Chevron
• Anticipating Monitoring for and Responding to Out-of-Zone Injection in a Multi-Zone, Highly Faulted Clastic Light Oil Reservoir
   Kevin Wiggs, ConocoPhillips

Water injection and its effectiveness has a substantial impact on project economics. This session will discuss recently developed and emerging technologies applied to enhance water injection efficiency.

Session Chairpersons: Indra Gunawan, ConocoPhillips; Balkrishna (Bala) Gadiyar, SLB

Speakers:

• New and Improved Tracer Methodologies to Quantify Water Flow in Wells and Reservoirs
   Sven Kristian Hartvig, Resman
• Fiber Optics Technology for Monitoring of Injection Profiles
   Mikhail Kaznacheev, SLB
• Models and Experiments for Estimating Injectivity Decline in Frac-Packed and Gravel Packed Injection Wells
   Mukul Sharma, University of Texas at Austin