Environmental Impact Assessment And HazOp
Study Of The Drilling Cuttings Confinement
Process Into Non-productive Wells In Marine
Platforms In Campeche, Mexico
Author(s)
M. Muriel-García, J. G. Cerón & R. M. Cerón
Abstract
Potential risk and environmental impacts associated with the cuttings re-injection
process as an alternative method for drilling wastes disposal were identified and
assessed in two marine platforms facilities located in Campeche, Mexico.
Environmental impacts were identified and assessed on physicochemical,
biological-ecological, socio-cultural and economical elements using the Rapid
Impact Assessment Matrix (RIAM). Drilling cuttings re-injection can cause
negative effects with light changes. Most of negative impacts were on the
physicochemical and biological-ecological elements, whereas positive impacts
were on the socio-cultural and economical elements. The most critical negative
impacts were: effects due to extreme events, persistent substances presence,
effects on aquatic fauna, and changes in biodiversity. The most important
positive impacts were those that generated changes in the regional and local
economy. By applying the correct mitigation measures it would be possible to
decrease the impacts, and in some cases, to eliminate them. Risks were evaluated
using the HazOp methodology, deviations in the process were analyzed,
recommendations were provided and each risk analyzed was categorized as
tolerable or non-tolerable. Consequences analysis from an accidental spill of
slurry and/or cuttings was carried out by the YAXUM-3D mathematical model.
The results of the consequences analysis showed that even the concentrations in
the discharge point exceed the recommended criteria for protection of marine life
and marine water quality; the spill is rapidly dispersed complying with the
permitted levels in a period of 8 h as a maximum.
Keywords: environmental assessment, HazOp, drilling cuttings disposal,
re-injection, platforms.
Keywords
environmental assessment, HazOp, drilling cuttings disposal,
re-injection, platforms
Related Book
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