scholarly journals Interwell connectivity analysis in a low-permeability formation using a modified Capacitance Model with application to the East Pembina Field, Cardium Formation, Alberta

2019 ◽  
Vol 74 ◽  
pp. 26
Author(s):  
Mammad Mirzayev ◽  
Jerry L. Jensen
Keyword(s):  
Maximum Stress ◽  
Connectivity Analysis ◽  
High Permeability ◽  
Western Canada Sedimentary Basin ◽  
Lower Permeability ◽  
Interwell Connectivity ◽  
Capacitance Model ◽  
Cardium Formation ◽  
Canada Sedimentary Basin

From the 1950s to the present, the Cardium Formation has been extensively produced. Exploitation has moved from the high-permeability western areas to very heterogeneous lower permeability, “halo-oil” regions in the east. In this case study, we briefly summarize the geology and assess the degree of interwell communication in selected areas from the East Pembina Field. For the Interwell Connectivity (IWC) evaluation, we use a modified version of the Capacitance Model (CM-PW) for connectivity analysis in areal windows. The CM has been used to analyze flow rates to measure IWC. The direction of the largest IWC change agrees with the expected maximum stress direction in the Western Canada Sedimentary Basin. The model also captures differences between pre- and post-fracturing connectivities. The matches of predicted to measured production using the CM-PW are fair to good, 0.76 ≤ R2 ≤ 0.95.

Ammonoid faunas from the Cardium Formation (Turonian-Coniacian, Upper Cretaceous) and contiguous units, Alberta, Canada: I. Scaphitidae

2001 ◽  
Vol 38 (3) ◽  
pp. 333-346 ◽  
Author(s):  
Wayne F Braunberger ◽  
Russell L Hall
Keyword(s):  
Upper Cretaceous ◽  
The United States ◽  
Depositional Environments ◽  
Western Canada ◽  
Sequence Stratigraphic ◽  
Western Canada Sedimentary Basin ◽  
Hydrocarbon Sources ◽  
Cardium Formation ◽  
Canada Sedimentary Basin ◽  
Major Hydrocarbon

While the Cardium Formation (Turonian–Coniacian, Upper Cretaceous) is one of the major hydrocarbon sources, and consequently one of the most intensely studied siliciclastic formations in the Western Canada Sedimentary Basin, it remains one of the more controversial units in terms of understanding the depositional environments and processes it represents, and correlations between subsurface and outcrop. Proposed subsurface subdivisions based on sequence stratigraphic concepts, and relation of these allomembers to long-established members of the outcrop belt, have provoked further disagreements. The general lack of biostratigraphic data within the Cardium Formation makes it difficult to test different models and to resolve conflicting proposals. This paper provides stratigraphic and taxonomic information on all known scaphitid ammonoids from the Cardium Formation and correlation of these faunas with the Turonian and Coniacian zonal scheme established in the United States Western Interior; future publications will provide similar treatments of the collignoniceratid ammonites and inoceramid bivalves.

Activation Rate of Seismicity for Hydraulic Fracture Wells in the Western Canada Sedimentary Basin

2020 ◽  
Vol 110 (5) ◽  
pp. 2252-2271 ◽  
Author(s):  
Hadi Ghofrani ◽  
Gail M. Atkinson
Keyword(s):  
Sedimentary Basin ◽  
Average Rate ◽  
Scoring Function ◽  
Horizontal Wells ◽  
Western Canada ◽  
Western Canada Sedimentary Basin ◽  
Activation Rate ◽  
Order Of Magnitude ◽  
Cardium Formation ◽  
Canada Sedimentary Basin

ABSTRACT The rate of M≥3 earthquakes associated with hydraulic fracturing (HF) in horizontal wells (HF wells) in the Western Canada Sedimentary Basin is estimated for the period from 2009 to 2019. The estimates are based on a statistical discrimination algorithm that uses an objective scoring function deduced from the observed spatiotemporal correlations between wells and earthquakes. A Monte Carlo simulation approach is used to test the efficacy of the scoring function in determining noncoincidental association rates, allowing for correction of the observed association rates for the expected number of false positives. The basin-wide average rate of association of M≥3 earthquakes with HF wells (2009–2019) is ∼0.8% on a per well basis. The susceptibility appears to vary by formation by more than an order of magnitude, ranging from ∼6% for HF wells in the Duvernay Formation to ∼0.07% for HF wells in the Cardium Formation. For some formations, there has been no observed association at the M≥3 level to date, but this does not necessarily imply that such formations are immune to induced seismicity.

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