The Iraqi Kurdistan territory is considered a unique region for the the petroleum geology, due to the fact that, on the one hand, part of the reservoirs, for example, of the Cenozoic age, was formed in relatively deep sea conditions, and was present with low-permeability deposits, mainly argillaceous limestones, where the role of fracturing in enhancing the reservoirs cannot be overestimated, and on the other hand, provide a wide opportunities for studying all elements of petroleum systems, including the reservoir. This study is focusing on a group of formations of significant economic interest to the oil industry in Iraq, namely the Lower Fars, Jeribe and Pilla Spi formations of the main Cenozoic (Tertiary) age. The above-mentioned formations are believed to play an important role in natural hydrocarbon systems. Some of them are good reservoirs and other ones are cap rocks. The availability of the very well exposed reservoir rocks on the outcrop provides a possibility to implement a wide range of fracture analysis and use the results to better predict natural fracture characteristics of subsurface fracture network of the Tertiary reservoirs in all Iraqi Kurdistan fields. One of the practical and very useful analysis is to use mathematical computation method within a frame of the MATLAB software. A modern method that did not well credited yet in the oil and gas industry. In this paper we utilize a photogrammetry technique in integration with mathematical computation to extract the full set of fracture characteristics from outcrop. Such Method is just started to get spotlight in the Oil and Gas Industry and expected to gain more attraction by researchers in soon future.
References
1. Awdal A.H., Braathen A., Wennberg O.P., Sherwani G.H., The characteristics of fracture networks in the Shiranish formation of the Bina Bawi anticline; comparison with the Taq Taq field, Zagros, Kurdistan, NE Iraq, Petroleum Geoscience, 2013, V. 19(2), pp. 139-155, http://dx.doi.org/10.1144/petgeo2012-036
2. Reif D., Grasemann B., Faber R.H., Quantitative structural analysis using remote sensing data: Kurdistan, northeast Iraq, AAPG Bulletin, 2011, V. 95 (6), pp. 941–956, https://doi.org/10.1306/11151010112
3. Jassim S.Z., Goff J.C., The geology of Iraq, Dolin, Prague, 2006, 341 p.
4. Fard I.A., Braathen A., Mokhtari M., Alavi S.A., Interaction of the Zagros Fold–Thrust Belt and the Arabian-type, deep-seated folds in the Abadan Plain and the Dezful Embayment, SW Iran, Petroleum Geoscience, 2006, no. 12, pp. 347–362, http://dx.doi.org/10.1144/1354-079305-706
5. Aqrawi A.A.M. et al., The petroleum geology of Iraq, Scientific Press, Beaconsfield, 2010, 424 p.
6. Wennberg O.P., Svana T., Azzizadeh M. et al., Fracture intensity vs. mechanical stratigraphy in platform top carbonates: the Aquitanian of the Asmari Formation, Khaviz Anticline, Zagros, SW Iran, Petroleum Geoscience, 2006, no. 12, pp. 235–245, http://dx.doi.org/10.1144/1354-079305-675
7. Ahmadhadi F., Daniel J.-M., Azzizadeh M., Lacombe O., Evidence for pre-folding vein development in the Oligo-Miocene Asmari Formation in the Central Zagros Fold Belt, Iran, Tectonics, 2008, V. 27, no. 1, https://doi.org/10.1029/2006TC001978
8. Casini G., Gillespie P.A. et al., Sub-seismic fractures in foreland fold and thrust belts: Insight from the Lurestan Province, Zagros Mountains, Iran, Petroleum Geoscience, 2011, V. 17, pp. 263–282, http://dx.doi.org/10.1144/1354-079310-043
9. Lacombe O., Bellahsen N., Mouthereau F., Fracture patterns in the Zagros Simply Folded Belt (Fars, Iran): Constraints on early collisional tectonic history and role of basement faults, Geological Magazine, 2011, V. 148, pp. 940–963, https://doi.org/10.1017/S001675681100029X
10. Tavani S., Storti F., Soleimany B., et al., Geometry, kinematics and fracture pattern of the Bangestan anticline, Zagros, SW Iran, Geological Magazine, 2011, V. 148, pp. 964–979, DOI: https://doi.org/10.1017/S0016756811000197
11. Priest S.D., Discontinuity analysis for rock engineering, Chapman & Hall, London, 1993, 492 p.
12. Terzaghi R.D., Source of error in joint surveys, Geotechnique, 1965, V. 15, pp. 287–304, https://doi.org/10.1680/geot.1965.15.3.287
13. Odling N.E., Gillespie P. et al., Variations in fracture system geometry and their implications for fluid flow in fractured hydrocarbon reservoirs, Petroleum Geoscience, 1999, V. 5, pp. 373–384, http://dx.doi.org/10.1144/petgeo.5.4.373
14. Price N.J., Fault and joint development in Brittle and Semi-brittle rock, Pergamon Press, Oxford, 1966, 176 p.
15. Healy D., Rizzo R.E., Cornwell D.G. et al., FracPaQ: a MATLAB™ toolbox for the quantification of fracture patterns, Journal of Structural Geology, 2017, V. 95, https://doi.org/10.1016/j.jsg.2016.12.003