Beneficial Use of Drilling Waste - A Wetland Restoration Technology

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The results obtained thus far are promising with regard to the low toxicity of restored drill cuttings (particularly the Cameron substrate) with increasing levels of salinity. Water extraction, acid digestion, and interstitial water samples from the restored drill cuttings, as well as redox potential, soil pH and interstitial nitrate/ammonium concentrations, and the photosynthetic response, have been determined for the baseline fresh water condition (June-August 1998), at 9ppt (September-November 1998), at 18ppt (December-February 1998,1999), and at 27ppt (currently underway). Salinities will be brought to full-strength seawater (36ppt) on May 24, 1999. The Cameron drill cuttings are remarkably similar to dredge spoil, ... continued below

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1 pages

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Resources, Pioneer Natural July 1, 1999.

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Description

The results obtained thus far are promising with regard to the low toxicity of restored drill cuttings (particularly the Cameron substrate) with increasing levels of salinity. Water extraction, acid digestion, and interstitial water samples from the restored drill cuttings, as well as redox potential, soil pH and interstitial nitrate/ammonium concentrations, and the photosynthetic response, have been determined for the baseline fresh water condition (June-August 1998), at 9ppt (September-November 1998), at 18ppt (December-February 1998,1999), and at 27ppt (currently underway). Salinities will be brought to full-strength seawater (36ppt) on May 24, 1999. The Cameron drill cuttings are remarkably similar to dredge spoil, which is currently being used as a wetland creation substrate. The few elements that were extracted into the interstitial water were primarily cations (Ca, K, Mg) and were not elevated to a level that would pose a threat to wetlands productivity. Swaco drill cuttings remained high in aluminum with concomitant high pH, which likely resulted in limited plant productivity through hindered nutrient uptake.

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1 pages

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OSTI as DE00760021

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  • Other Information: PBD: [1999]

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  • Report No.: DOE/BC/14849-5
  • Grant Number: FG22-97BC14849
  • DOI: 10.2172/760021 | External Link
  • Office of Scientific & Technical Information Report Number: 760021
  • Archival Resource Key: ark:/67531/metadc704382

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  • July 1, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 8, 2016, 2:28 p.m.

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Resources, Pioneer Natural. Beneficial Use of Drilling Waste - A Wetland Restoration Technology, report, July 1, 1999; Tulsa, Oklahoma. (digital.library.unt.edu/ark:/67531/metadc704382/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.