Hydrocarbon accumulation pattern jointly controlled by strike-slip faults and cap rocks: A case from Yingshan Formation in ZG-51 wellblock of eastern Tazhong area, Tarim Basin

被引：0
作者：
Lan, Xiaodong [1 ,2 ]
Lü, Xiuxiang [1 ,2 ]
Zhu, Yanming [3 ]
Li, Shiyin [4 ]
Xie, En [4 ]
机构：
[1] School of Earth Science, China University of Petroleum
[2] State Key Laboratory of Petroleum Resources and Prospecting
[3] Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process, Ministry of Education, China University of Mining and Technology, Xuzhou
[4] Exploration and Development Research Institute, Tarim Oilfield Company, PetroChina, Korla
来源：
Oil and Gas Geology | 2014年 / 35卷 / 01期
关键词：
Cap rock; Hydrocarbon accumulation; Strike-slip fault; Tazhong area; Yingshan Formation; ZG-51; wellblock;
D O I：
10.11743/ogg20140113
中图分类号：
学科分类号：
摘要：
Oil/gas/water distribution is complex in the marine carbonate reservoirs of the Yingshan Formation in ZG-51 wellblock of eastern Tazhong area. Based on analysis of the existing oil and gas exploration results, fault characteristics and reservoir-seal assemblage, we studied the oil/gas distribution and accumulation characteristics of the Yingshan Formation by using various data such as routine logging, image logging, seismic data and geochemical data. The reservoirs of Yingshan Formation in this wellblock are predominantly of vuggy type and fractured-vuggy type, and show quasi-layer distribution along unconformities. The strike-slip faults significantly controlled hydrocarbon accumulation. The distance between oil/gas wells and major strike-slip faults ranges from 0.5 to 4.0 km. The daily oil and gas output decreases away from the strike-slip faults. The geochemical behaviors of oil and gas also changes regularly with the distance to the strike-slip faults. In plane view, the gas reservoirs are near the faults, while oil reservoirs are far from these faults. The 3rd to 5th members of Lianglitag Formation as well as the high resistive intervals of the Yingshan Formation act as barriers. Vertically, multiple reservoir-seal combinations superimpose each other, resulting in oil/gas accumulation in multiple layers. The early oil pools were influenced by gas invasion in later stage, resulting in the vertical distribution characteristics of upper oil and lower gas". Hydrocarbons accumulated in favorable structural traps and lithologic traps under the jointly control of cap rocks and strike-slip faults."
引用
收藏
页码：107 / 115
页数：8
相关论文
共 40 条
  • [1] Ma Y., Chinese marine carbonate oil and gas resource, major scientific and technological problems and countermeasures in exploration, Petroleum Forum, 7, 2, pp. 11-14, (2000)
  • [2] Al-Aasma I., Lonnee J., Clarke J., Multiple fluid flow events and the formation of saddle dolomite: Examples from Middle Devonian carbonates of the Western Canada sedimentary basin, Journal of Geochemical Exploration, 69-70, pp. 11-15, (2000)
  • [3] Billi A., Salvini F., Fault-related solution cleavage in exposed carbonate reservoir rocks in the Southern Apennines, Italy, Journal of Petroleum Geology, 24, 2, pp. 147-169, (2001)
  • [4] Castillo M.V., Mann P., Deeply buried, Early Cretaceous paleokarst terrane, southern Maracaibo Basin, Venezuela, AAPG Bulletin, 90, 4, pp. 567-579, (2006)
  • [5] Cerepi A., Barde J.P., Labat N., High-resolution characterization and integrated study of a reservoir formation: The Danian carbonate platform in the Aquitaine Basin(France), Marine and Petroleum Geology, 20, 10, pp. 1161-1183, (2003)
  • [6] Ferrill D.A., Morris A.P., Fault zone deformation controlled by carbonate mechanical stratigraphy, Balcones fault system, Texas, AAPG Bulletin, 92, 3, pp. 359-380, (2008)
  • [7] Graham W.B., Girbacea R., Mesonjesi A., Et al., Evolution of fracture and fault-controlled fluid pathways in carbonates of the Albanides fold-thrust belt, AAPG Bulletin, 90, 8, pp. 1227-1249, (2006)
  • [8] Lavoie D., Chi G.X., The Lower Silurian Sayabec Formation in northern Gaspé: Carbonate diagenesis and reservoir potential, Bulletin of Canadian Petroleum Geology, 49, 2, pp. 282-298, (2001)
  • [9] Leythaeuser D., Borromeo O., Mosca F., Et al., Pressure solution in carbonate source rocks and its control on petroleum generation and migration, Marine and Petroleum Geology, 12, 7, pp. 711-733, (1995)
  • [10] Neilson J.E., Oxtoby N.H., The relationship between petroleum, exotic cements and reservoir quality in carbonates - A review, Marine and Petroleum Geology, 25, 8, pp. 778-790, (2008)
1234