基于储集层特征分析、油藏数值模拟和生产动态分析,研究塔里木盆地海相砂岩油藏水平井水淹规律及其模式。与陆相砂岩油藏相比,塔里木盆地海相砂岩油藏具有原油黏度低、储集层连续性好、夹层发育等特征,加之大规模使用水平井开发,在开发规律上表现为开采速度快、采出程度高的开发特征。储集层渗流屏障、注采井网、优势通道等因素都会造成水平井段出水不均匀,为此提出4类9种典型水平井水淹模式,根据不同出水机理、剩余油分布特征提出治理对策。利用水油比导数曲线拐点特征,可判别水平井水淹模式。水平井水淹规律及其模式的研究和总结可为塔里木盆地海相砂岩油藏水平井稳油控水政策的制定提供依据。图17表3参11
刘广为
,
周代余
,
姜汉桥
,
王陶
,
李俊键
. 塔里木盆地海相砂岩油藏水平井水淹规律及其模式[J]. 石油勘探与开发, 2018
, 45(1)
: 128
-135
.
DOI: 10.11698/PED.2018.01.13
Based on geological analysis, reservoir numerical simulation and production performance analysis, water-out performance and pattern of horizontal wells in Tarim marine sandstone reservoir were studied. Compared with continental sandstone reservoirs, the marine sandstone reservoirs in Tarim Basin were characterized by low oil viscosity, good reservoir continuity, and development of interbeds, which together with the large amount of horizontal wells, resulted in fast production rate and high recovery degree of the reservoirs. The main controlling factors of uneven water-out in horizontal wells were reservoir seepage barrier, injection-production well pattern, and dominant seepage channel. Thus 9 types in 4 categories of typical water-out pattern of horizontal wells in Tarim marine sandstone reservoirs were identified, and water-out management measures were proposed for them respectively according to their water-out mechanism and remaining oil distribution characteristics. Finally, the water-out pattern can be identified based on the inflection characteristics of derivative curve of water-oil ratio. This study of the water-out pattern can provide guidance for the adjustment policy of water injection in horizontal wells in marine sandstone reservoirs of Tarim Oilfield.
[1] 单秀琴, 张宝民, 张静, 等. 古流体恢复及在储集层形成机理研究中的应用: 以塔里木盆地奥陶系为例[J]. 石油勘探与开发, 2015, 42(3): 274-282.
SHAN Xiuqin, ZHANG Baomin, ZHANG Jing, et al. Paleofluid restoration and its application in studies of reservoir forming: A case study of the Ordovician in Tarim Basin, NW China[J]. Petroleum Exploration and Development, 2015, 42(3): 274-282.
[2] 吴林, 管树巍, 任荣, 等. 前寒武纪沉积盆地发育特征与深层烃源岩分布: 以塔里木新元古代盆地与下寒武统烃源岩为例[J]. 石油勘探与开发, 2016, 43(6): 905-915.
WU Lin, GUAN Shuwei, REN Rong, et al. The characteristics of Precambrian sedimentary basin and the distribution of deep source rock: A case study of Tarim Basin in Neoproterozoic and source rocks in Early Cambrian, Western China[J]. Petroleum Exploration and Development, 2016, 43(6): 905-915.
[3] 周代余, 江同文, 冯积累, 等. 底水油藏水平井水淹动态和水淹模式研究[J]. 石油学报, 2004, 25(6): 73-77.
ZHOU Daiyu, JIANG Tongwen, FENG Jilei, et al. Water flooding performance and pattern in horizontal well with bottom water reservoir[J]. Acta Petrolei Sinica, 2004, 25(6): 73-77.
[4] 姜汉桥, 李俊键, 李杰. 底水油藏水平井水淹规律数值模拟研究[J]. 西南石油大学学报(自然科学版), 2009, 31(6): 172-176.
JIANG Hanqiao, LI Junjian, LI Jie. Investigation on water out mechanism of bottom water driven reservoir in horizontal wells[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2009, 31(6): 172-176.
[5] 郑俊德, 高朝阳, 石成方, 等. 水平井水淹机理数值模拟研究[J]. 石油学报, 2006, 27(5): 99-102.
ZHENG Junde, GAO Chaoyang, SHI Chengfang, et al. Numerical simulation of watered out mechanism in horizontal well[J]. Acta Petrolei Sinica, 2006, 27(5): 99-102.
[6] 杜殿发, 王玉靖, 侯加根, 等. 薄层边底水油藏水淹模式: 以陆梁油田陆9井区呼二三油藏为例[J]. 油气地质与采收率, 2012, 19(5): 91-93.
DU Dianfa, WANG Yujing, HOU Jiagen, et al. Study on water flooding pattern of thin-layered reservoir with edge and bottom water, case of K 1 H 2 3 reservoir of Lu 9 wellblock in Luliang Oilfiedl[J]. Petroleum Geology and Recovery Efficiency, 2012, 19(5): 91-93.
[7] 冯其红, 刘廷廷, 杨山, 等. 大斜度井出水类型研究[J]. 石油钻采工艺, 2008, 30(1): 89-94.
FENG Qihong, LIU Tingting, YANG Shan, et al. Study on water production types of deviated wells[J]. Oil Drilling & Production Technology, 2008, 30(1): 89-94.
[8] 王庆, 刘慧卿, 曹立迎. 非均质底水油藏水平井水淹规律研究[J]. 岩性油气藏, 2010, 22(1): 122- 127.
WANG Qing, LIU Huiqing, CAO Liying. Water flooding law of horizontal well in heterogeneous bottom water reservoir[J]. Lithologic Reservoirs, 2010, 22(1): 122-127.
[9] 李俊键, 姜汉桥, 李杰, 等. 水平井水淹规律影响因素的不确定性及关联分析[J]. 油气田地面工程, 2008, 12(1): 1-3.
LI Junjian, JIANG Hanqiao, LI Jie, et al. Uncertainty and correlation analysis of influencing factors of flooding law in horizontal wells[J]. Oil-Gasfield Surface Engineering, 2008, 12(1): 1-3.
[10] 刘欣颖, 胡平, 程林松, 等. 水平井开发底水油藏的物理模拟试验研究[J]. 石油钻探技术, 2011, 39(2): 96-100.
LIU Xinying, HU Ping, CHENG Linsong, et al. Experiment study of horizontal well with bottom water drive[J]. Petroleum Drilling Techniques, 2011, 39(2): 96-100.
[11] CHAN K S. Water control diagnostic plots[R]. SPE 30775, 1995.
