... leakage scenario where CO 2 may leak from Licence C into Licence B, perhaps along a fault. Who is liable for any CO 2 leakage into shallower formations, freshwater aquifers or other undesirable outcomes within Licence B? In this situation, it may be appropriate for Licence B to be included...

... Abstract Appraising CO 2 leakage risks and ensuring the long-term CO 2 containment integrity of existing and new wells are key factors in guaranteeing the sustainability of potential CO 2 geologic storage in a depleted mature gas field. Particularly, considering CO 2 leakage through cement...

... Abstract During the water injector workover campaign in 2018, some casing leakage near the surface was identified (depth range 10 to 300 ftRT). Several attempts were made to seal the leakage, but none of them succeeded. In response to investigation, a specific cementing technique was developed...

... approach were identified after exercising pre-defined screening criteria. Marine CO 2 dispersion study is carried out to confirm the impact of any potential leakage along existing wells and faults, and to understand the CO 2 behavior in marine environment in the event of leakage. Study incorporates...

... Abstract Ensuring long-term integrity of existing plugged and abandoned (P&A) and active wells that penetrated the selected CO 2 storage reservoir is the key to reduce leakage risks along the wellpath for long-term containment sustainability. Restoring the well integrity, when required...

... and materials seismic data leakage petroleum engineer reservoir characterization well logging neural network prediction inversion fracture lost circulation prevent pre-drill risk anisotropy seismic-based anisotropy Introduction Lost circulation is one of the most common complex events...

... needs to be ascertained for thousands of years. Several geological and geophysical factors along with the existingwells need to be evaluated to assess the potential risks for CO 2 leakage that maychallenge the long-term containment. This study considers a depleted carbonate field located offshore...

... reaction reservoir upstream oil & gas membrane hydrate storage saline aquifer co2 storage leakage mineral dissolution separation Introduction The development of energy and its consumption have paralleled the evolution of humanities and societies on the planet earth. Developed...

... of CCS is to reduce the impact of greenhouse gases, especially CO 2 , to the climate system. Although a proven concept, the greatest concern in conducting CCS on a large scale is the risk of leakage of the injected CO 2 from the subsurface formation into the atmosphere. In an offshore CO 2 storage...

... remediation to restart production. Instead of a conventional casing patch approach to repair casing leakage, an innovative solution using an epoxy resin system was applied to recover wellbore integrity and return the well to production. In addition, the resin system does not create casing diameter reduction...

... wellhead when it meets special snubbing work conditions, such as no tubing plug or tubing leakage. The pilot test of this technology is carried out in Jilin oilfield, operation cost is reduced about 50%, and it makes the production development more effectively and economically. The annual demands...

... is not a positivesealing like static flangetoflange connection, but rather has always had some acceptable leakage. The question of "how much leak is acceptable" was tested at site, the results analyzed and compared for safe operation. Leading damaged mechanism such as presence of liquid in the DGS in centrifugal...

... intervention Failure Distribution module maintenance operation field operator operator technical condition index monitoring society of petroleum engineers information control system leakage availability subsea control module subsea equipment failure mode housekeeping data integrity reactive...

.... Hence, health, safety and environment considerations need to be carefully examined at every stage of the sequestration project; right from design to implementation. Major risks involved with a sequestration project are the chance of leakage of sequestered CO 2 as well as the risk of fracturing...

... drilling rheological property cement formulation cement chemistry strength cement property drilling fluids and materials upstream oil & gas operation long column cement column leakage slurry system inclination granule narrow clearance compressive strength drilling fluid management...

... basin for carbon dioxide storage. Preliminary risk assessment can be conducted on basinal scale based on possibility of leakage and geothermal gradient. On basinal scale, sedimentary basins in Indonesia are of intermediate to high risk for CO 2 storage. CO2 capture co 2 structural geology...

... escapes from the reservoir. Various scientific studies, pilot CCS programs and commercial CCS projects have shown that leakage problems will be detrimental to the environment and safety to human race. Modeling CO 2 flow in fractures along the well remains a challenge. In this work, several CO 2...

... leakages along wells over time (from tens to thousands of years), to evaluate risks and to propose relevant actions to reduce unacceptable risks. The methodological framework emphasized the use of the risk concept as a relevant criterion to (i) evaluate the overall performance of well confinement...

... Abstract One of the major challenges associated with CO 2 geological storage is the performance of the confining system over long timescales. In particular, the occurrence of CO 2 leakage through existing wells could not only defeat the purpose of storage but also badly affect human health...