|Title||Mallik 7-year drilling waste sump monitoring program: summary report|
|Author||Piraux, O; Côté, M M; Akagawa, S; Kawamoto, T; Seccombe-Hett, P; Dallimore, S R|
|Source||Geological Survey of Canada, Open File 8015, 2016, 723 pages, https://doi.org/10.4095/297895 (Open Access)|
|Publisher||Natural Resources Canada|
|File format||pdf; xls; rtf|
|Area||Mackenzie delta; Richards Island|
|Lat/Long WENS||-135.0000 -134.5000 69.5000 69.3667|
|Subjects||fossil fuels; geochemistry; geophysics; stratigraphy; hydrate; gas; hydrocarbons; waste management; wells; drilling; drilling activity; topography; vegetation; ground temperatures; soil samples; water
analyses; e m surveys; Mallik L-38 well; Mallik 2L-38 well; Tertiary|
|Illustrations||location maps; photographs; tables; profiles; images|
|Program||Gas Hydrate PERD, Energy Geoscience|
|Released||2016 05 04|
The Mallik L-38 lease area in the outer Mackenzie Delta has been the site of three historical gas hydrate drilling programs, Mallik 2L-38 conducted in 1998, and Mallik 3L/4L/5L-38
conducted in 2002 and the Mallik gas hydrate production program conducted in the winters of 2007 and 2008. The 1998 and 2002 programs utilized conventional drilling sumps to dispose of drill cuttings and fluids. Of note, an additional drill sump
constructed in the winter of 1973 is also at the Mallik site. This sump, which was part of the Mallik L-38 discovery well, was constructed by Imperial Oil Ltd. and is not part of the undertakings described in this report. In 1998 the Japan National
Oil Corporation (JNOC) and the Geological Survey of Canada (GSC), Natural Resources Canada (NRCan) collaborated to complete a gas hydrate research program (Dallimore et al. 1999). With JAPEX Canada Ltd. (JAPEX) acting as the operator, the
JAPEX/JNOC/GSC Mallik 2L-38 well was drilled and a drilling waste disposal sump, approximately 45 m x 50 m in size was constructed on the lease. This sump is referred as the Mallik 2L-38 Sump.
In 2002, a seven-party participant group also led by
JNOC and GSC, with JAPEX as the operator (Dallimore and Collett 2005), drilled the JAPEX/JNOC/GSC et al. Mallik 3L-38, 4L-38 and 5L-38 wells. JAPEX Canada Ltd. acted as the operator for this program, constructing a drill sump, approximately 50 m x 55
m in size, was constructed to dispose of the drilling waste generated during drilling of the three wells. This sump is referred as the Mallik 3L/4L/5L-38 Sump.
In the winters of 2007 and 2008 a third gas hydrate research program at the Mallik
site was led by Japan Oil, Gas and Metals National Corporation (JOGMEC), NRCan and the Aurora Research Institute (ARI) called the JOGMEC/NRCan/ARI Mallik 2007-2008 Gas Hydrate Production Research Well Program. ARI acted as the operator of this
program with the Japan Oil Gas and Metals National Corporation and Natural Resources Canada as participants. This program re-entered the 2L-38 and 3L-38 wells without construction of the sumps. All drilling waste material was removed from site and
disposed of at an approved facility (Dallimore et al, 2013). As a condition of Water Board License No. N7L1-1817, ARI was required to undertake a 7-year monitoring program at the Mallik 2L-38 and Mallik 3L/4L/5L-38 sumps.
The information provided
in the annual sump monitoring submissions to the Water Board satisfies the conditions assumed by ARI under Part H of the Northwest Territories Water Board License No. N7L1- 1817: Conditions Applying to Abandonment and Restoration, specifically
section H 2 which states 'The Licensee shall monitor the existing drilling Waste Sumps 2L-38 and 3L/4L/5L- 38 after closure for a period of at least seven (7) years in accordance with the Northwest Territories Water board Publication 'Protocol for
the Monitoring of Drilling-Waste Disposal Sumps, October, 2006'.
This summary report is provided to the Water Board on behalf of ARI as a courtesy to assemble all of the pertinent monitoring observations during this period.
|Summary||(Plain Language Summary, not published)|
The Mallik L-38 lease area in the outer Mackenzie Delta was the site of three gas hydrate drilling programs As a condition of the 2007-08 Water Board
License, the Aurora Research Institute (operator of the Program) was required to undertake a 7-year monitoring program at the Mallik well sites. The work was conducted by a KAVIK-Stantec and the GSC provided scientific oversight. This report is the
summary of the data collected during the 7-year monitoring program. It was submitted to the Northwest Territories Water Board in June 2015. It is now being released as a GSC Open file to make the information more accessible to the public.