Clustering of groundwater chemistry data with implications for reservoir appraisal in West Siberia

Курчиков, А.Р.; Plavnik, A.G.

doi:10.1016/j.rgg.2009.10.003

“…For West Siberia, end‐members included carbonate rocks [ Millot et al , 2003], halites [ Millot et al , 2003; Shouakar ‐ Stash et al , 2007], and felsic silicates [ Millot et al , 2003]. Although we removed all sub‐watersheds with elevated Cl:Na from our analysis, we also included a regionally specific saline groundwater end‐member in the West Siberia models [ Kurchikov and Plavnik , 2009]. Model outputs indicated that saline groundwater contributed negligibly to our model result.…”

Section: Data Analysesmentioning

confidence: 99%

“…These analyses included all available sub-watersheds ( Figure 1), and used a stepped, linear regression approach that sequentially partitioned (i.e., parsed out) the variance due to each of the predictor variables, by partitioning variables that are wellestablished regulators of dissolved C flux before examining the less well-established effect of permafrost. For bicarbonate, we partitioned runoff followed by lithological variables [Bluth and Kump, 1994;Hartmann, 2009]; for bicarbonate: DOC we partitioned peat after lithology [Frey et al, 2007b;Raymond and Oh, 2007;Townsend-Small et al, 2011;Lauerwald et al, 2012]. Thus we ensured that variation in fluxes that could be attributed to differences in runoff, lithology, or vegetation did not confound the permafrost effect.…”

Section: Statistical Analysesmentioning

confidence: 99%

Landscape‐level controls on dissolved carbon flux from diverse catchments of the circumboreal

Tank

¹

,

Frey

²

,

Striegl

³

et al. 2012

Global Biogeochemical Cycles

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[1] While much of the dissolved organic carbon (DOC) within rivers is destined for mineralization to CO 2 , a substantial fraction of riverine bicarbonate (HCO 3 À ) flux represents a CO 2 sink, as a result of weathering processes that sequester CO 2 as HCO 3 À . We explored landscape-level controls on DOC and HCO 3 À flux in subcatchments of the boreal, with a specific focus on the effect of permafrost on riverine dissolved C flux. To do this, we undertook a multivariate analysis that partitioned the variance attributable to known, key regulators of dissolved C flux (runoff, lithology, and vegetation) prior to examining the effect of permafrost, using riverine biogeochemistry data from a suite of subcatchments drawn from the Mackenzie, Yukon, East, and West Siberian regions of the circumboreal. Across the diverse catchments that we study, controls on HCO 3 À flux were near-universal: runoff and an increased carbonate rock contribution to weathering (assessed as riverwater Ca:Na) increased HCO 3 À yields, while increasing permafrost extent was associated with decreases in HCO 3 À . In contrast, permafrost had contrasting and region-specific effects on DOC yield, even after the variation caused by other key drivers of its flux had been accounted for. We used ionic ratios and SO 4 yields to calculate the potential range of CO 2 sequestered via weathering across these boreal subcatchments, and show that decreasing permafrost extent is associated with increases in weathering-mediated CO 2 fixation across broad spatial scales, an effect that could counterbalance some of the organic C mineralization that is predicted with declining permafrost.

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“…Mann et al, (2003), reserve data of oilfi elds in Southeastern Anatolian basin: Özgür (2016) and 2017 production data of Turkish Petroleum Company (TPAO), reserve data of Cambay basin: www.selanoil.com Table 1-Salinity and I/IC ratios of low saline formation waters in some oil and gas production fi elds. Formation water data: Yang (2017), Fu and Zhan (2009), Kurchikov and Plavnik (2009), Novikov (2013a, b), Novikov (2012), Kokh and Novikov (2014); USGS Produced Water database, Seawater data: Oppo and Capozzi (2015). Giant fi eld: > 500 million bbl oil or oil equivalent gas reserve fi eld.…”

Section: The Relationship Between Reserve and Iodine Content Of The Fmentioning

confidence: 99%

Güneydoğu Anadolu Havzasinda Petrol İle İyot İli̇şki̇si̇

Özdemir¹

2018

Maden Tetkik Ve Arama Dergisi

2

0

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This study was made for investigating the relationship between iodine and hydrocarbon accumulations and to determine iodine contents of formation waters in the Southeastern Anatolia basin oilfi elds where have been produced almost all of the Turkey oils (more than 95%). Formation water samples have taken from 234 production wells in 49 oilfi elds which have different geological structures where oil and gas production has performed by the Turkish Petroleum Company (TPAO). Also, the drilling mud samples from EBY-17 oilwell in Elbeyli (Adıyaman) fi eld has collected, and their iodine analyses were carried out. Although the fi elds in the Southeastern Anatolia basin are old and some fi elds the secondary production methods are used, the high relationship between the oil and gas deposits and iodine were proved. As well as in other oil and gas fi elds in the world, not all reservoir waters in the Southeastern Anatolia basin are saline. However, all of them are rich in iodine. Therefore, the iodine-rich waters are a direct indicator for oil and gas producible reservoirs (containing mature hydrocarbon). Reservoir-targeted iodine geology and hydrogeology methods have simple sampling process, and laboratory analyses can result at a short time. The results are low cost, reliable and consistent. In the case when these data are utilized with other geological and geophysical methods, it is determined will be a practical and useful tool to reduce the hydrocarbon exploration risk to a minimum and to discover new deposits suitable for commercial production.

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“…In preliminary studies have been observed that formation waters of all oil and gas production basins in the world (including Southeastern Anatolia basin and Thrace basin) are contained >1 mg/L iodine (USGS Produced Water Database; Engle et al, 2016;Oppo et al, 2014;Oppo and Capozzi, 2015;Sudo, 1967;Kaiho, 2015;Kharaka et al, 1987;Dia et al, 1999;Dresel andRose, 2010, Rowan et al, 2015;Mirnejad et al, 2011;Xun et al, 1997;Fisher and Kreitler, 1987;Dickey et al, 1972;Land, 1995;Birkle et al, 2002;Birkle et al, 2009;Franks and Uchytil, 2016;Hitchton et al, 1971;Machperson, 1992;Kokh and Novikov, 2014;Novikov, 2013a, b;Novikov, 2012;Novikov and Shvartsev, 2009, Demir and Seyler, 1999, Kurchikov and Plavnik, 2009, Fu and Zhan, 2009, Kireeva, 2010, Bagheri et al, 2014. However, there are also production wells with formation waters containing iodine <1 mg/L in Southeastern Anatolia and Thrace basins (Appendix-1), Dörtyol (Hatay) gasfi eld, Cambay basin/India (Rebary et al, 2014) and in basins of other global oil and gas fi elds.…”

Section: Source Of Iodine In Waters and Iodine Contents Of Waters Associated With Hydrocarbon Accumulationsmentioning

confidence: 99%

“…Water chemistry data are useful indicators for migration processes as well as the formation of hydrocarbon accumulations and phase stages. Amount of total dissolved solids and content of salt ions (Na, Ca, Mg, Cl, HCO 3 and others), trace elements (I, B, Br) and dissolved gases have essential effects on the reservoir potential (Kurchikov and Plavnik, 2009;Plavnik et al, 2007;Pogodaeva et al, 2007;Borodkin et al, 2005;Shvartsev and Novikov, 2004;Surkov et al, 1999).…”

Section: The Relationships Between Oil (Bbl)/water (Bbl)mentioning

confidence: 99%

Güneydoğu Anadolu Havzasinda Petrol İle İyot İli̇şki̇si̇

Özdemir¹

2018

Bulletin of the Mineral Research and Exploration

0

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This study was made for investigating the relationship between iodine and hydrocarbon accumulations and to determine iodine contents of formation waters in the Southeastern Anatolia basin oilfi elds where have been produced almost all of the Turkey oils (more than 95%). Formation water samples have taken from 234 production wells in 49 oilfi elds which have different geological structures where oil and gas production has performed by the Turkish Petroleum Company (TPAO). Also, the drilling mud samples from EBY-17 oilwell in Elbeyli (Adıyaman) fi eld has collected, and their iodine analyses were carried out. Although the fi elds in the Southeastern Anatolia basin are old and some fi elds the secondary production methods are used, the high relationship between the oil and gas deposits and iodine were proved. As well as in other oil and gas fi elds in the world, not all reservoir waters in the Southeastern Anatolia basin are saline. However, all of them are rich in iodine. Therefore, the iodine-rich waters are a direct indicator for oil and gas producible reservoirs (containing mature hydrocarbon). Reservoir-targeted iodine geology and hydrogeology methods have simple sampling process, and laboratory analyses can result at a short time. The results are low cost, reliable and consistent. In the case when these data are utilized with other geological and geophysical methods, it is determined will be a practical and useful tool to reduce the hydrocarbon exploration risk to a minimum and to discover new deposits suitable for commercial production.

show abstract

Clustering of groundwater chemistry data with implications for reservoir appraisal in West Siberia

Cited by 13 publications

References 2 publications

Landscape‐level controls on dissolved carbon flux from diverse catchments of the circumboreal

Landscape‐level controls on dissolved carbon flux from diverse catchments of the circumboreal

Güneydoğu Anadolu Havzasinda Petrol İle İyot İli̇şki̇si̇

Güneydoğu Anadolu Havzasinda Petrol İle İyot İli̇şki̇si̇

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