Pore evolution characteristics of beach facies reservoir of Feixianguan II Member in Yuanba area, Sichuan Basin

被引：1

作者：

Liu J. ^{[1
,2
]}

Liu G. ^{[2
]}

Wei Q. ^{[2
]}

Yuan G. ^{[3
,4
]}

机构：

[1] School of Geosciences in China University of Petroleum, Qingdao

[2] Wuxi Research Institute of Petroleum Geology, Research Institute of Petroleum Exploration and Production, SINOPEC, Wuxi

[3] National Engineering Laboratory of Low Permeability Oil and Gas Exploration and Development, Xi'an

[4] Exploration and Development Research Institute, Changqing Oilfield Branch Company, PetroChina, Xi'an

来源：

Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2016年 / 40卷 / 01期

关键词：

Carbonate rock; Feixianguan Formation; Marginal platform beach; Pore structure; Reservoir; Sichuan Basin; Yuanba area;

D O I：

10.3969/j.issn.1673-5005.2016.01.002

中图分类号：

学科分类号：

摘要：

Using analyses of rock thin sections, cathodoluminescence, electron microprobe and fluid inclusion, the reservoir characteristics and the diagenesis that affected on reservoir pore formation and preservation of the Feixianguan II Member in Yuanba area were studied. The pore evolution model was discussed combined with hydrocarbon infill injection period times. The results show that the oolitic limestone with intergranular and intragranular dissolved pores is the main reservoir in the study area. Reservoir pores are mainly formed by micritization, dissolution, cement filling, compaction, pressure solution and tectonic rupture. Meteoric dissolution is the key for secondary porosity formation. The first buried dissolution provides a good channel and gathering place for hydrocarbon filling, but meteoric calcite cement plays a significant role in the destruction of the secondary porosity preservation. There are three stages of reservoir pore evolution in the study area, namely, dissolution pore forming and the alternative variation of pore fluctuating before oil charging; pore decreasing in the transformation period from oil to gas; and fracture and dissolution pore forming and slow pore increasing after transformation from oil to gas. © 2016, University of Petroleum, China. All right reserved.

引用

页码：10 / 17

页数：7

共 15 条

[1] She M., Shou J., Shen A., Et al., Experimental simulation of dissolution and alteration of buried organic acid fluid on dolomite reservoir, Journal of China University of Petroleum(Edition of Natural Science), 38, 3, pp. 10-17, (2014)
[2] Ding X., Tan X., Li L., Et al., Characteristics and genetic analysis of grain shoal reservoirs in Lei 3 member of Middle Triassic Leikoupo formation, Sichuan Basin, Journal of China University of Petroleum(Edition of Natural Science), 37, 4, pp. 30-37, (2013)
[3] Tian Y., Liu S., Zhao Y., Et al., Diagenesis of Lower Cambrian Longwangmiao Formation reservoirs in central aea of Sichuan Basin, China, Journal of Chengdu University of Technology(Science & Technology Edition), 41, 6, pp. 671-683, (2014)
[4] Ma Y., Generation mechanism of Puguang Gas Field in Sichuan Basin, Acta Petrolei Sinica, 28, 2, pp. 9-21, (2007)
[5] Ma Y., Cai X., Exploration achievements and prospects of the Permian Triassic natural gas in northeastern Sichuan Basin, Oil & Gas Geology, 27, 6, pp. 741-750, (2006)
[6] Ma Y., Cai X., Zhao P., The research status and advances in porosity evolution and diagenesis of deep carbonate reservoir, Earth Science Frontiers, 18, 4, pp. 181-192, (2011)
[7] Zhang X., He Y., Ma Y., Et al., Controls of sedimentation on reservoir formation in Lower Triassic Feixian-guan Formation, northeastern Sichuan Basin, Earth Science Frontiers, 18, 4, pp. 224-235, (2011)
[8] Wang S., Jiang X., Guan H., Et al., Diagenesis effects of Lower Triassic Feixianguan Formation reservoir in Puguang Gas Field, Northeast Sichuan, Petroleum Geology & Experiment, 32, 4, pp. 366-372, (2010)
[9] Wang X., Zhang F., Jiang Z., Et al., A study of Feixianguan reservoir in northeast Sichuan Basin, Earth Science Frontiers, 15, 1, pp. 117-122, (2008)
[10] Li X., Wang Q., Han Y., Et al., Main controlling factors on reservoir space evolution and high quality reservoir forming process of reef-beach facies in Changxing-Feixianguan Formation of northeastern Sichuan area, Natural Gas Geoscience, 25, 10, pp. 1594-1602, (2014)

← 1 2 →