Lower Napo Shale Formation in the Oriente Basin: Analysis of Reservoir Formation Conditions and Prediction of Favorable Areas

Hong ZHANG, Jing LI

Abstract


Considering the current situation of Ecuador being rich in oil and poor in gas sources, we evaluate the exploration priority of the shale gas potential of the primary oil- and gas-bearing basin in the country—the Oriente Basin. Richness criteria for shale gas reservoirs are proposed according to the evaluation. On the basis of the main lithological characteristics, geochemical factors, depth, distributional stability, and data availability, the lower shale rock of the Napo Formation in the Oriente Basin is selected from five potential source rocks as the shale rock that shows the greatest potential for shale gas. The reservoir formation conditions of the Napo Formation are studied. The thickness of the lower Napo shale rock is obtained by studying the 38 wells in the basin. Then, the depths of the lower Napo shale rocks are mapped by interpreting 29 seismic lines in the basin. Next, the distribution of the geochemical factors of the basin is derived by analyzing the outcome of the predecessors. Finally, the areas with favorably rich shale gas are predicted by studying the different reservoir formation conditions. The northwest (blocks 11 and 18), east (blocks 12, 67, 18, 31, and 63), and west areas (blocks 29, 20, 22, 28, and 70) of the basin are prospective areas that are rich in shale gas (oil). This study provides guidelines for the exploration and development of the shale gas in the Oriente Basin.

Keywords


Ecuador; Oriente basin; Shale gas; Favorable exploration; Development area

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References


[1] Bai, G. P., & Qin, Y. Z. (2010). Synopsis of petroliferous basins and petroleum distribution in south America. Geoscience, 24(4), 1102-1111.

[2] Dashwood, M. F., & Abbotts, L. L. (1990). Aspects of the petroleum geology of the Oriente Basin, Ecuador. Geological Society, 50, 89-117.

[3] Gaibor, J., & Hochuli, J. P. A., & Winkler, W. (2008). Hydrocarbon source potential of the Santiago Formation, Oriente Basin, SE of Ecuador. Journal of South American Earth Sciences, 25, 145-156.

[4] Gonzalez, M. G. (2010). Shale gas potential in the eastern Cordillera of Colombia. Paper presented at AAPG International Conference and Exhibition, Calgary, Alberta, Canada.

[5] Pindell, J. L., & Tabbutt, K. D. (1995). Mesozoic–Cenozoic Andean paleogeography and regional controls on hydrocarbon systems. Tankard, A. J., Suarez, R., & Welsink, H. J. (Eds.). American Association of Petroleum Geologist, Memoir 62, 101-128.

[6] Higley, D. K. (2001). The Putumayo–Oriente–Maranon province of Colombia, Ecuador, and Peru Mesozoic–Cenozoic and Paleozoic petroleum systems. USA: U.S. Department of the Interior U.S. Geological Survey.

[7] Sanchez, H., Sampedro, T. F., Peñaranda, R., Loli, M., Flores, J. G., Moyse, K., & Itria, C. (2004, May). An efficient alternative to control sand production in horizontal wells in block-16 of Ecuador. Paper presented at Offshore Technology Conference, Houston, Texas.

[8] Lindsay, R. O. (2002). Sand thickness prediction from band-limited seismic attributes using neural networks: Oriente basin, Ecuador. Paper presented at SEG Int’l Exposition and 72nd Annual Meeting, Salt Lake City, Utah.

[9] Boyd, N. K. (2010). Improved reservoir characterization using prestack analyses, Eden Yuturi field, Ecuador. Paper presented at SEG Denver 2010 Annual Meeting.

[10] Decker, C. (2001). Geophysical reservoir characterization of Bermejo field, Ecuador. Paper presented at SEG Int’l Exposition and Annual Meeting, San Antonio, Texas.

[11] Lindsay, R., & Bocanegra, D. (2001). Sand thickness prediction of the basal Tena/M1 sands from seismic attributes using neural networks: Oriente basin Ecuador. Paper presented at SEG Annual Meeting.

[12] Vera, J. S. (1998). The use of directional drilling in the industry’s effort to minimize environmental impact: Block 16 project. Paper presented at the 1998 SPE International Conference on Health, Safety and Environment in Oil and Gas Exploration and Production, Caracas, Venezuela.

[13] Fathi, E., Akkutlu, I. Y., & Boltzmann, L. (2011). Method for simulation of shale gas transport in Kerogen. Paper presented at the SPE Annual Technical Conference and Exhibition, USA.

[14] Curtis, J. B. (2002). Fractured shale-gas systems. AAPG Bulletin, 11(86), 1921-1938.

[15] Ye, D. L., Xu, W. M., & Chen, R. L. (2007). Oil-gas resources and exploration and development potential of south Africa. Overseas Exploration, (2), 70-75.

[16] Ding, Z. Y., Chen, W. X., & Xiong, L. P. (2010). Tectonic evolution in the Oriente basin of Ecuador. Xinjiang Petroleum Geology, 31(2), 211-215.




DOI: http://dx.doi.org/10.3968/8502

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