塔河油田碳酸盐岩缝洞型油藏堵水效果地质影响因素

doi:10.11743/ogg20110618

摘要/Abstract

摘要：

塔河油田主力油藏是受多期岩溶作用叠加改造、多期油气充注形成的碳酸盐岩缝洞型油藏,储集体非均质性极强,油水关系复杂,堵水效果整体较差。通过对塔河油田碳酸盐岩缝洞型油藏堵水效果地质影响因素分析后认为,油井储集体类型和油水分布模式是影响堵水效果最关键的地质因素。由于大型溶洞特别是高角度裂缝的存在,碳酸盐岩缝洞型油藏剩余油分布复杂,且分别易造成工艺上封堵难度大和堵死的现象,堵水效果较差。而裂缝-孔洞型储集体类似砂岩油藏,储层呈"似均质"状,堵水效果相对较好。与储集体类型相对应的似均质型油水关系模式以及表现出来的缓升型、台阶式上升型的含水率上升类型的油井,堵水效果好;同时致密段的存在提高了堵水效果。

关键词: 稳油控水, 影响因素, 堵水效果, 缝洞型油藏, 塔河油田

Abstract:

The major reservoirs of Tahe oilfield consist of fractured-vuggy carbonates which underwent multiple stages of karstification and hydrocarbon charging.These reservoirs are of strong heterogeneity,complex oil-water contact and poor water shutoff effect.This study indicates that reservoir types and oil-water distribution patterns are the two key geological factors affecting water shutoff.The remaining oil distribution of the carbonate reservoirs of fractured-vuggy type is quite complicated due to the existence of big solution cavities,especially the high-angle fractures.The big solution cavities can make plugging water diffcult,while the high-angle fractures can easily result in complete shutoff,leading to poor shutoff effects.The fracture-vuggy reservoirs show quasi-homogeneity similar to sandstone reservoirs,thus their water shutoff effects are fair.Oil-water relationship pattern of quasi-homogeneous type corresponding to the reservoir types and wells with slowly-increasing or step-wise increasing water cuts have better water shutoff effects.Moreover,the existence of tight sections also can improve the water shutoff effects.

Key words: oil production stabilization through water cut controlling, geological factor, water shutoff effect, fractured-vuggy reservoir, Tahe oilfield

中图分类号:

TE358

荣元帅,高艳霞,李新华. 塔河油田碳酸盐岩缝洞型油藏堵水效果地质影响因素[J]. 石油与天然气地质, 2011, 32(6): 940-945. doi: 10.11743/ogg20110618 Rong Yuanshuai,Gao Yanxia,Li Xinhua. Geological factors influencing water shutoff effects of fractured-vuggy carbonate reservoirs in Tahe oilfield[J]. Oil & Gas Geology, 2011, 32(6): 940-945. doi: 10.11743/ogg20110618

参考文献

[1] 焦方正.塔河油气田开发研究文集[M].北京:石油工业出版社,2006:80-101. Jiao Fangzheng.The collection of studies of development research on oil & gas of Tahe oilfield [M].Beijing:petroleum industry Press,2006:80-101. [2] 张抗.塔河油田的发现及其地质意义[J].石油与天然气地质,1999, 20(2):120-124. Zhang Kang.The finding and significance of Tahe oilfield[J].Oil & Gas Geology, 1999, 20(2):120-124. [3] 谭承军,朱伟,马旭杰.塔河碳酸盐岩洞缝型油藏堵水效果评价方法初探[J].新疆石油地质,2004,22(1):99-102. Tan chenjun,Ju wei,Ma xujie.T he analysis on estimate ways of water plugging effects of fracture and vug carbonate reservoir in the Tahe oil field [J].Xinjiang Petroleum Geology,2004,22(1):99-102 [4] 王建云.塔河油田奥陶系碳酸盐岩油藏堵水工艺技术浅谈[J].新疆石油天然气,2005,1(2):73-79. Wang jianyun.Proble into pluggin techniques of ordovician carbonate oil reservoir in Tahe oil field [J].Xinjiang Oil & Gas,2005,1(2):73-79. [5] 周立果,李旭华.碳酸盐岩岩溶缝洞型油藏驱油及堵水机理探讨[J].油气井测试,2005,14(1):17-19. Zhou Liguo,Li Xuehua.Discuss for oil displacement mechanism in carbonatite karst gap reservoir and water plugging [J].Well Testing,2005,14(1):17-19. [6] 朱怀江,龙秋莲.改性栲胶在缝洞型碳酸盐岩油藏中的堵水实验研究[J].石油学报,2009,301(4):564-569. Zhu huaijiang, Long qiulian.Experimental study on water shutoff of sulfonated larch tannin extract to aqueous layer in the fracture-cavity karst reservoir[J].Acta Petrolei Sinica,2009,301(4):564-569. [7] 李宗宇.塔河奥陶系缝洞型碳酸盐岩油藏开发对策探讨[J].石油与天然气地质,2007,28(6):856-862. Li Zongyu.A discussion on development strategies for the Ordovician fractured-vuggy carbonate rock reservoirs in Tahe oilfield[J].Oil & Gas Geology,2007,28(6):856-862. [8] 赵普春.塔河碳酸盐岩缝洞型油藏挤水泥堵水矿场试验[J].中外能源,2010,15(1):50-55. Zhao puchun.Cement squeeze for water plugging in fractured-vuggy carbonate reservoir of Tahe oilfield[J].Sino-Global Energy,2010,15(1):50-55. [9] 漆立新,云露.塔河油田奥陶系碳酸盐岩岩溶发育特征与主控因素[J].石油与天然气地质,2010,31(1):1-12. Qi Lixin,Yun Lu.Development characteristics and main controlling factors of the Ordovician carbonate karst in Tahe oilfield[J].Oil & Gas Geology,2010,31(1):1-12. [10] 柏松章.碳酸盐岩潜山油田开发[M].北京:石油工业出版社,1996:1-120. Bai Songzhang.The development of carbonate buried hill reservoir.[M]Beijing:petroleum industry Press,1996:1-120. [11] 翟晓先,云露.塔里木盆地塔河大型油田地质特征及勘探思路回[J].石油与天然气地质,2008,29(5):565-573. Zhai Xiaoxian Yun Lu.Geology of giant Tahe oilfield and a review of exploration thinking in the Tarim Basin[J].Oil & Gas Geology,2008,29(5):565-573. [12] 张希明,杨坚,杨秋来,等.塔河缝洞型碳酸盐岩油藏描述及储量评估技术[J].石油学报,2004,25(1):13-18. Zhang Ximin,Yang Jian,Yang Qiuliai ect.Reservoir description and reserves estimation technique for fracture-cave type carbonate reservoir in Tahe Oilfield.[J].Acta Petrolei Sinica,2004,25(1):13-18. [13] 肖玉茹,何峰煜.古洞穴型碳酸盐岩储层特征研究-以塔河油田奥陶系古洞穴为例[J].石油与天然气地质,2003,24(1):75-86. Xiao Yuru Hefengyi.Reservoir characteristics of paleocave carbonates-a case study of Ordovician paleocave in Tahe oilfield Tarim basin[J], Oil & Gas Geology,2003,24(1):75-86. [14] 林忠民.塔河油田奥陶系碳酸盐岩储层特征及成藏条件[J].石油学报,2002,23(3):23-26. Lin Zhongming.Carbonate rock reservoir features and oil-gas accumulating conditions in the Ordovician of Tahe oilfield in northern tarim basin[J].Aeta Petrolei Siniea,2002,23(3):23-26. [15] 鲁新便.岩溶缝洞型碳酸盐岩储集层的非均质性[J].新疆石油地质,2003,24(4):360-362. Lu Xinbian.Heterogeneity of karst-vuggy carbonate reservoir rocks[J].Xinjiang Petroleum Geology,2003,24(4):360-362. [16] 鲁新便,蔡忠贤.缝洞型碳酸盐岩油藏古溶洞系统与油气开发-以塔河碳酸盐岩溶洞型油藏为例[J].石油与天然气地质,2010,31(1):22-27. Lu Xinbian,Cai Zhongxian.A study of the paleo-cavern system in fractured-vuggy carbonate reservoirs and oil/gas development-taking the reservoirs in Tahe oilfield as an example[J].Oil & Gas Geology,2010,31(1):22-27. [17] 陈志海,郎兆新.缝洞性碳酸盐岩油藏储渗模式及其开采特征[J].石油勘探与开发, 2005, 32(3):101-105. Chen Zhiha,i Lang Zhaoxin.Storage-percolation modes and production performance of the karst reservoirs in Tahe oilfield[J].Petroleum Exploration& Development, 2005, 32(3):101-105 [18] 刘莉莉,陈小凡,崔力公.塔河油田缝洞型碳酸盐岩油藏含水变化主要影响因素分析[J].新疆石油天然气,2008,4(1):43-44. Liu Lili,Chen Xiaofan,Cui Ligong.Main influence factor on water bearing analysis of fracture-karst caved carbonate reservoir of Tahe oil field[J].Xinjiang Oil & Gas,2008,4(1):43-44.