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Water production normally increases as fields mature, and two main ways exist to deal with the produced water. One is to dispose of the produced water into dedicated disposal wells. The other is to reinject the produced water for pressure maintenance or sweep efficiency.

The surge in unconventional completions has created a substantial accumulation of previously hydraulically fractured wells that are candidates for hydraulic refracturing.

A matured field is currently producing with greater than 85% water cut (WC) and has significant levels of uncertainty with respect to oil/water contact (OWC), flank structure, depth of spill points, production allocation, and residual oil saturation.

One of the most promising targets for resource-rock stimulation in South America is the Vaca Muerta (VM) shale in western Argentina.

The tragic blowout of Macondo has triggered many technical and managerial developments in the field of well integrity.

The North field offshore Qatar was observed to have a chance of inner annuli becoming charged with shallow-gas pressure with possible communication to other annuli, which was thought to be a well integrity concern.

Despite multitier safeguards, blowouts occur. When such accidents happen, rate estimation is an important and daunting task.

With the current low-oil-price environment, the cost of decommissioning is seen as a key driver for the ongoing economic viability of the basin.

This paper presents current advances in the development of a plasma-based milling tool and its use in casing-section milling for P&A.

This paper presents the challenges and obstacles faced in the use of a new technology for the plugging and deoiling of sections of unpiggable flowlines before decommissioning.