塔里木盆地库车坳陷新生界终端扇沉积体系与储层研究
- 收稿日期:
1998-12-01
- 修回日期:
1999-06-16
- 刊出日期:
1999-12-10
摘要: 塔里木盆地库车拗陷新主界沉积时期气候干燥,沉积物主要为陆相碎屑岩。根据岩石学、沉积构造、沉积相序组合等分析,认为其沉积体系为终端扇体系,发育补给带、分流带、盆地带三种主要相组合类型。结合储层成岩作用、储集空间、传集物性等的综合分析,认为下第三系储层质量较差,上第三系好储层主要发育于北部地区。
The Study on the Terminal Fans and Reservoir Quality during Neozoic Era in Kuche down Warping Region in Tarim Basin
- 1. CNPC Key Laboratory for Oil and Gas Reservoirs,Beijinge 100083;
- 2. Research Center of Exploration,Tarim Petroleum Exploration and Development Headquarters, Koria Xinjiang 841000;
- 3. Petroleum Economics & Information Research Center,CNPC Beijing 100011
- Received Date:
1998-12-01
- Rev Recd Date:
1999-06-16
- Publish Date:
1999-12-10
Abstract: The Neozoic Era stratra deposits are mainly terrigenous clastics which formed in arid or semiarid regions in Kuche down warping region in Tarim basin. There are six lithologic associations during Neogene period in Kuche depression. The lithologic asociation during Paleogene period is FA6+FA5+FA1+FA3+FA2. The main lithologic association during Jidike period in the north area is FAl+FA2+FA5,and in the south area is FA5+FA6. The main lithologic association during Kongchong period in the north area is FA1+FA2+FA3,and in the south area is FA5+FA4. The main lithologic association during Kuche period in the north area is FA1+FA2+FA3,and in the east and south area is FA5. The sedimentary system is regarded as terminal fans by petrology,sedimentary structure and the depositional sequence. The model includes a tripartite zonation of terminal fans into feeder, distributary and basinal zones. The feeder zone is characterized by a down- stream decrease in both the scale and frequency of channel deposits,which are mainly replaced by sheetflood deposits. The basinal zone is made up of floodbasin,playa mudflat or aeolian-origined deposits. The lithologic type is mainly terrigenous clastics. The content of quartz is 10.1%-58.5%,of the terminal fan lithic fragment is 58%-84.3%,interstitial materials is 19. 2%-39.4%,cement is 1%-18%,that include anhydrite,calcite, dolomite and analcidite. The primary pore typs are primary intergranular pore,matrix micropore,shrinkage pore,intercrystal pore and inner granular pore. The secondary pore type include intergranular solution pore,granular solution pore,fracture etc. Integrated with the diagenesis,reservoir space,porosity and permeability,the reservoir quality of lower Tertiary stratra is poor and the better reservoir during Neogene period developped in the northern area in Kuche down warping region.
朱如凯, 魏伟, 张运东. 塔里木盆地库车坳陷新生界终端扇沉积体系与储层研究[J]. 沉积学报, 1999, 17(S1): 752-757.
引用本文: |
朱如凯, 魏伟, 张运东. 塔里木盆地库车坳陷新生界终端扇沉积体系与储层研究[J]. 沉积学报, 1999, 17(S1): 752-757.
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ZHU Ru-kai, WEI Wei, ZHANG Yun-dong. The Study on the Terminal Fans and Reservoir Quality during Neozoic Era in Kuche down Warping Region in Tarim Basin[J]. Acta Sedimentologica Sinica, 1999, 17(S1): 752-757.
Citation: |
ZHU Ru-kai, WEI Wei, ZHANG Yun-dong. The Study on the Terminal Fans and Reservoir Quality during Neozoic Era in Kuche down Warping Region in Tarim Basin[J]. Acta Sedimentologica Sinica, 1999, 17(S1): 752-757.
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