Predicted impacts from offshore produced-water discharges on hypoxia in the gulf of Mexico

Journal article


Bierman, V J., Hinz, S C., Justic, Dubravko, Scavia, Don, Veil, John A., Satterlee, Kent, Parker, Michael E. and Wilson, Scott. (2008). Predicted impacts from offshore produced-water discharges on hypoxia in the gulf of Mexico. SPE Projects, Facilities and Construction. 3(2), pp. 1 - 15. https://doi.org/10.2118/106814-PA
AuthorsBierman, V J., Hinz, S C., Justic, Dubravko, Scavia, Don, Veil, John A., Satterlee, Kent, Parker, Michael E. and Wilson, Scott
Abstract

Summer hypoxia (dissolved oxygen < 2 mg/L) in the bottom waters of the northern Gulf of Mexico has received considerable scientific and policy attention because of potential ecological and economic impacts. This hypoxic zone forms off the Louisiana coast each summer and has increased from an average of 8,300 km2 in 1985-1992 to over 16,000 km2 in 1993-2001, reaching a record 22,000 km2 in 2002. The almost threefold increase in nitrogen load from the Mississippi River Basin (MRB) to the Gulf since the middle of the last century is the primary external driver for hypoxia.

A goal of the 2001 Federal Action Plan is to reduce the 5-year running average size of the hypoxic zone to below 5,000 km2 by 2015. After the Action Plan was developed, a new question arose as to whether sources other than the MRB may also contribute significant quantities of oxygen-demanding substances. One very visible potential source is the hundreds of offshore oil and gas platforms located within or near the hypoxic zone, many of which discharge varying volumes of produced water.

The objectives of this study were to assess the incremental impacts of produced water discharges on dissolved oxygen in the northern Gulf of Mexico, and to evaluate the significance of these discharges relative to loadings from the MRB. Predictive simulations were conducted with three existing models of Gulf hypoxia using produced water loads from an industry study. Scenarios were designed that addressed loading uncertainties, settleability of suspended constituents, and different assumptions on delivery locations for the produced water loads. Model results correspond to the incremental impacts of produced water loads, relative to the original model results, which included only loads from the MRB.

The predicted incremental impacts of produced water loads on dissolved oxygen in the northern Gulf of Mexico from all three models were small. Even considering the predicted ranges between lower- and upper-bound results, these impacts are likely to be within the errors of measurement for bottomwater dissolved oxygen and hypoxic area at the spatial scale of the entire hypoxic zone.

Year2008
JournalSPE Projects, Facilities and Construction
Journal citation3 (2), pp. 1 - 15
PublisherSociety of Petroleum Engineers (SPE)
ISSN1942-2431
Digital Object Identifier (DOI)https://doi.org/10.2118/106814-PA
Scopus EID2-s2.0-79952318489
Page range1 - 15
Research GroupSchool of Arts
Place of publicationUnited States of America
Permalink -

https://acuresearchbank.acu.edu.au/item/87x27/predicted-impacts-from-offshore-produced-water-discharges-on-hypoxia-in-the-gulf-of-mexico

  • 49
    total views
  • 0
    total downloads
  • 1
    views this month
  • 0
    downloads this month
These values are for the period from 19th October 2020, when this repository was created.

Export as

Related outputs

Non-effect of water hardness on the accumulation and toxicity of copper in a freshwater macrophyte (ceratophyllum demersum): How useful are hardness-modified copper guidelines for protecting freshwater biota?
Markich, Scott, King, Angus and Wilson, Scott. (2006). Non-effect of water hardness on the accumulation and toxicity of copper in a freshwater macrophyte (ceratophyllum demersum): How useful are hardness-modified copper guidelines for protecting freshwater biota? Chemosphere. 65(10), pp. 1791 - 1800. https://doi.org/10.1016/j.chemosphere.2006.04.024
Imposed still evident in eastern Australia 10 years after Tributyltin restrictions
Gibson, Craig and Wilson, Scott. (2003). Imposed still evident in eastern Australia 10 years after Tributyltin restrictions. Marine Environmental Research. 55(2), pp. 101 - 112. https://doi.org/10.1016/S0141-1136(02)00097-1