Progress of Sedimentological Research in Tarim Basin

SUN Long-de

Along with deepening of oil-gas exploration in Tarim basin in recent years, many progresses have been obtained in sedimentological research of several chief target strata: ① as the recognition progress of formation mechanism to the Ordovician heterogeneous carbonate paleo-karst reservoir and establishment of its seismic identification technology in Lun'nan-Tahe oil field with more than hundred million tons reserve, the exploration success ratio has been enhanced greaty . Recent breakthrough of oil-gas exploration also indicates that there exists wider exploration foreground in platform margin belt out of main Ordovician karst region in Lun'nan area; ② due to establishment of sequence stratigraphy framework and distribution model of the Upper Devonian-Lower Carboniferous Donghe Fm. unsynchronous shore sandstone in Hade 4 oil field, it has broadened to prospect for reservoirs of stratigraphic traps and stratigraphy-structure compound traps in Donghe Sandstone; as the discovery of special reservoir-cap rocks combination in which low porosity permeability sandstone as reservoir rocks and reticulation clay cementated sandstone as gas cap rocks because of water-locking effect in Jurassic of Yin'nan 2 gas field, the gas prospect domain has been broadened; the high-pressure gas reservoir-cap rocks combinations as in Kela 2 large gas field, in which Lower Cretaceous Basijiqike Fm. thick sandstones formed in braided river delta alluvial fan delta under arid climate as the reservoir rocks and the Paleogene thick gypsum-salt mudstones formed in evaporite bay lagoon as good cap rocks, are widespread distributed in Kuche depression and southwestern Tarim basin. So there is a great potential for exploration.

Tarim Oil-Field Company, PetroChina, Korla Xinjiang 841000

Received Date: 2003-11-19

Rev Recd Date: 2004-01-12

Publish Date: 2004-09-10

Key words:

Abstract: Along with deepening of oil-gas exploration in Tarim basin in recent years, many progresses have been obtained in sedimentological research of several chief target strata: ① as the recognition progress of formation mechanism to the Ordovician heterogeneous carbonate paleo-karst reservoir and establishment of its seismic identification technology in Lun'nan-Tahe oil field with more than hundred million tons reserve, the exploration success ratio has been enhanced greaty . Recent breakthrough of oil-gas exploration also indicates that there exists wider exploration foreground in platform margin belt out of main Ordovician karst region in Lun'nan area; ② due to establishment of sequence stratigraphy framework and distribution model of the Upper Devonian-Lower Carboniferous Donghe Fm. unsynchronous shore sandstone in Hade 4 oil field, it has broadened to prospect for reservoirs of stratigraphic traps and stratigraphy-structure compound traps in Donghe Sandstone; as the discovery of special reservoir-cap rocks combination in which low porosity permeability sandstone as reservoir rocks and reticulation clay cementated sandstone as gas cap rocks because of water-locking effect in Jurassic of Yin'nan 2 gas field, the gas prospect domain has been broadened; the high-pressure gas reservoir-cap rocks combinations as in Kela 2 large gas field, in which Lower Cretaceous Basijiqike Fm. thick sandstones formed in braided river delta alluvial fan delta under arid climate as the reservoir rocks and the Paleogene thick gypsum-salt mudstones formed in evaporite bay lagoon as good cap rocks, are widespread distributed in Kuche depression and southwestern Tarim basin. So there is a great potential for exploration.

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Reference (9)

[1]	贾承造主编.中国塔里木盆地构造特征与油气.北京:石油工业出版社,1997. 1～425[Jiao Chengzao. The tectonic feature and oil-gas of Tarim Basin, China. Beijing: Petroleum Industry Press,1997.1～425]
[2]	魏新善. 低渗透天然气储层中水封和烃封污染机理. 低渗透油气田,2002,(3):6～60[Wei Xinshan. The pollution mechanism of water-sealing and hydrocarbon-sealing in low-permeability gas-reservoir. Low-permeability Oil and Gas Field, 2002, (3): 6～60]
[3]	张士诚,王鸿勋. 致密砂岩气层伤害特点分析. 低渗透油气田,2002,(3):22～25[Zhang Shicheng and Wang Hongxun. Analysis on the damage-characteristics of compacted sandstone gas-layer. Low-permeability Oil and Gas Field, 2002, (3): 22～25]
[4]	黄月明. 低渗透致密砂岩储层研究. 低渗透油气田,1998,(3):10～13[Huang Yueming. Study on compacted sandstone reservoir with low-permeability. Low-permeability Oil and Gas Field, 1998, (3): 10～13]
[5]	Bennion D B. Reduction in productivity of oil and low permeability gas reservoir due to aqueous phase trapping. JCPT,1994,33(9):56～62
[6]	Bennion D B. Remediation of water and hydrocarbon phase trapping problems in low permeability gas reservoir. Journal of Canadian Petroleum Technology, 1999,38(8):99～108
[7]	张敏谕,毛美利. 长庆低渗气田水锁效应与抑制对策. 低渗透油气田,1999,4(2,3):66～68[Zhang Minyu and Mao Meili. Water-sealing and its controlling on Changqing low-permeability gas field. Low-permeability Oil and Gas Field, 1999, 4 (2 & 3): 66～68]
[8]	贾进华,顾家裕,郭庆银,等.塔里木盆地克拉2气田白垩系储层沉积相.古地理学报,2001,3(3):67～75[Jia Jinhua, Gu Jiayu, Guo Qingyin, et al. The sedimentary facies of the Cretaceous reservoir in Kela 2 gas-field, Tarim Basin. Journal of Paleogeography, 2001, 3(3): 67～75]
[9]	周志毅.塔里木盆地各纪地层.北京:科学出版社, 1992.320～323[Zhou Zhiyi. Stratigraphy of Tarim Basin. Beijing: Science Press, 1992.320～323]

Progress of Sedimentological Research in Tarim Basin

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