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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 313 - 325 (13page)
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초록· 키워드
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In order to understand the unconventional reservoir characteristics in the Montney Formation, the detailed geological examinations, such as core interpretation, petrographic analysis and the poro-perm measurement (including MICP), have been performed from the Kakwa well, drilled in southwestern Alberta, Canada. The studied Montney section, mostly comprised of fine to coarse siltstone, can be informally subdivided into three distinctive intervals, on the basis of a prominent log marker, inferred to represent a major regional falling and flooding surface. The core description and the log characters have confirmed that the entire section mostly comprises a series of multi-stacked, higher-order parasequences. They are characterized by the coarsening-upward succession, having homogeneous to pinstripe-laminated shale (Facies A), heterolithic siltstone (Facies B), and massive to faintly laminated coarse siltstone (Facies C). The succession is interpreted to be formed in response to a progradational shoreface setting, wherein trace fossils typically show a diminutive and low-diversity suite. The mineralogical analysis has revealed that the cored samples are composed mostly of detrital grains of quartz, feldspar and dolomite with the major cement materials of illite, chlorite and smectite, the ratio of which would be lithofacies-controlled, having a higher proportion of clay and TOC in the more distal facies. Clays, mostly authigenic in origin, commonly occlude primary pores, but disseminated organics contain the pervasive organic nanopores. Pore-throat size distribution shows modal radius (5 to 75 nm) that has a positive correlation with the grain-size variation, but has a negative correlation with respect to the TOC and clay contents. Likewise, the poro-perm system appears to be facies-dependant. The mineralogical and petrographic studies have led to the general conclusions that the poro-perm characteristics are strongly influenced by the pervasive presence of organics and authigenic clays that would fill and occlude the paleopore network. The study results tentatively suggest that the Middle Montney, coarsest and most porous (up to 7%), will have the highest potentiality with respect to the poro-perm system.
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참고문헌 (30)
참고문헌 신청
Akai, T. / 2014 / Petrophysical analysis of a tight siltstone reservoir: Montney Formation, western Canada / The 20th Formation Evaluation Symposium :1~4
Barclay, J.E. / 1990 / Dynamic casting and growth faulting: Dawson Creek graben complex, Carboniferous-Permian Peace River Embayment, western Canada / Bulletin of Canadian Petroleum Geology 38A:115~145
Barree, R.D. / 2014 / Diagnostic fracture injection tests: common mistakes, misfires, and misdiagnoses / Society of Petroleum Engineers 169539, Western North American and Rocky Mountain Joint Regional Meeting :1~20
Bhattacharya, J.P. / 2010 / Deltas;Facies Models 4. Geological Association of Canada, GEOText, 6 :233~264
Cipolla, C. / 2011 / Integrating microseismic mapping and complex fracture modeling to characterize fracture complexity / Society of Petroleum Engineers 140185, Hydraulic Fracturing Technology Conference :1~22
Barclay, J.E. / 1990 / Dynamic casting and growth faulting: Dawson Creek graben complex, Carboniferous-Permian Peace River Embayment, western Canada / Bulletin of Canadian Petroleum Geology 38A:115~145
Barree, R.D. / 2014 / Diagnostic fracture injection tests: common mistakes, misfires, and misdiagnoses / Society of Petroleum Engineers 169539, Western North American and Rocky Mountain Joint Regional Meeting :1~20
Bhattacharya, J.P. / 2010 / Deltas;Facies Models 4. Geological Association of Canada, GEOText, 6 :233~264
Cipolla, C. / 2011 / Integrating microseismic mapping and complex fracture modeling to characterize fracture complexity / Society of Petroleum Engineers 140185, Hydraulic Fracturing Technology Conference :1~22
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