海上边水薄层稠油油藏天然能量分区

doi:10.7657/XJPG20210510

摘要/Abstract

摘要：

中国南海东部E稠油油藏油层薄,构造平缓,含油面积大,以边水驱动为主,存在区域能量供应不足问题,产能难以满足高速开发的需要,亟待调整开发方式。通过数值模拟主控因素对油井生产动态和油藏压力的影响,拟合天然能量供应充足时,油井到边水的极限距离,确定能量充足区和能量不足区;通过主控因素和灰色关联分析,建立不同水体倍数下的天然能量分区界限图版。研究结果表明,储集层渗透率越大,原油流度越高,油层厚度越大,水体倍数越大及采液速度越低,能量充足区范围则越大; E油藏天然能量分区界线即油井到边水的极限距离为922 m,与区域油井实际生产动态相符,说明该图版可靠,可供同类型油藏开发借鉴。

关键词: 边水油藏, 薄油层, 边水极限距离, 天然能量, 分区界限, 数值模拟, 灰色关联分析

Abstract:

The E heavy oil reservoir with edge water in eastern South China Sea has thin pay zones, gentle structures and a large oil-bearing area. The regional energy is insufficient and the production capacity can’t support oilfield development at a high rate, so it is urgent to update the development model. Numerical simulation was carried out on the influence of controlling factors on oil well performance and reservoir pressure, and the extreme distance from an oil well to the edge water was estimated when natural energy supply is sufficient, then the zones with sufficient energy and insufficient energy were determined, and finally natural energy partition charts for different water multiples were established after analyzing the controlling factors and grey correlation. The research results indicate that: (1) The higher the reservoir permeability, the higher the oil mobility, the thicker the pay zone, the greater the water multiples and the lower the fluid recovery rate, and the larger the sufficient energy zone range; (2) The natural energy boundary in the E reservoir, namely the extreme distance between an oil well and the edge water, is 922 m, which is consistent with the regional production performance. The findings above have proved that the charts are reliable and can be a reference to developing similar oil reservoirs.

Key words: edge-water oil reservoir, thin pay zone, extreme edge water distance, natural energy, partition boundary, numerical simulation

中图分类号:

TE348

谢明英, 闫正和, 卫喜辉, 吴刘磊, 张宇. 海上边水薄层稠油油藏天然能量分区[J]. 新疆石油地质, 2021, 42(5): 579-583.

XIE Mingying, YAN Zhenghe, WEI Xihui, WU Liulei, ZHANG Yu. Natural Energy Partition in Offshore Thin Heavy Oil Reservoirs With Edge Water[J]. Xinjiang Petroleum Geology, 2021, 42(5): 579-583.

图/表 4

参考文献 20

[1]	谢明英, 刘伟新, 戴宗, 等. 海相强水驱疏松砂岩稠油薄油藏高效开发实践[J]. 中外能源, 2019, 24(6):54-59.
	XIE Mingying, LIU Weixin, DAI Zong, et al. Practice of efficient development in marine strong-water flooding loose sandstone heavy oil thin reservoirs[J]. Sino-Global Energy, 2019, 24(6):54-59.
[2]	王杰, 范赛华, 李彬文, 等. 陆9井区K₁h3-42油藏天然能量评价与油藏类型研究[J]. 油气田地面工程, 2009, 28(11):19-20.
	WANG Jie, FAN Saihua, LI Binwen, et al. Natural energy evaluation and reservoir type study of K₁h3-4 2 reservoir in Lu-9 well area[J]. Oil-Gasfield Surface Engineering, 2009, 28(11):19-20.
[3]	饶良玉, 吴向红, 李贤兵, 等. 苏丹层状边水油藏水平井开发效果评价与对策研究[J]. 岩性油气藏, 2011, 23(5):106-110.
	RAO Liangyu, WU Xianghong, LI Xianbing, et al. Development effect evaluation and strategy of horizontal wells in multilayer edge water reservoir in Sudan[J]. Lithologic Reservoirs, 2011, 23(5):106-110.
[4]	鹿克峰. 气顶油藏水侵预测与动用储量计算新方法[J]. 特种油气藏, 2017, 24(2):89-93.
	LU Kefeng. A new method for water invasion prediction and dynamic reserves calculation of gas cap reservoirs[J]. Special Oil ＆ Gas Reservoirs, 2017, 24(2):89-93.
[5]	王学忠. 一种简便计算边水体积的新方法[J]. 特种油气藏, 2010, 17(5):81-83.
	WANG Xuezhong. A new simple method to calculate edge water volume[J]. Special Oil ＆ Gas Reservoirs, 2010, 17(5):81-83.
[6]	袁清芸. 气藏水体能量评价改进方法[J]. 天然气技术, 2010, 24(6):40-41.
	YUAN Qingyun. A method to improve an evaluation of waterbody energy in gas reservoir[J]. Natural Gas Technology, 2010, 24(6):40-41.
[7]	卫喜辉, 闫正和, 谢明英, 等. 海上稠油油藏能量分区评价及开发调整策略[J]. 复杂油气藏, 2020, 13(3):57-61.
	WEI Xihui, YAN Zhenghe, XIE Mingying, et al. Energy partition evaluation and development adjustment strategies for offshore heavy oil reservoirs[J]. Complex Hydrocarbon Reservoirs, 2020, 13(3):57-61.
[8]	郑松青, 崔书岳, 牟雷. 缝洞型油藏物质平衡方程及驱动能量分析[J]. 特种油气藏, 2018, 25(1):64-67.
	ZHENG Songqing, CUI Shuyue, MU Lei. Material balance equation and driving energy analysis of fracture-cave oil reservoir[J]. Special Oil ＆ Gas Reservoirs, 2018, 25(1):64-67.
[9]	李小云. BQ57区热采稠油油藏边水能量计算及水侵规律研究[D]. 黑龙江大庆:东北石油大学, 2014.
	LI Xiaoyun. Research on edge water energy caculation method and water invasion mechanism in BQ57 oilfied[D]. Daqing, Heilongjiang:Northeast Petroleum University, 2014.
[10]	李传亮, 朱苏阳. 油藏天然能量评价新方法[J]. 岩性油气藏, 2014, 26(5):1-4.
	LI Chuanliang, ZHU Suyang. A new evaluation method of reservoir energy[J]. Lithologic Reservoirs, 2014, 26(5):1-4.
[11]	聂仁仕, 贾永禄, 沈楠, 等. 油藏天然能量指标在注水动态分析中的应用[J]. 新疆石油地质, 2010, 31(2):174-177.
	NIE Renshi, JIA Yonglu, SHEN Nan, et al. Application of reservoir natural drive index to waterflood performance analysis[J]. Xinjiang Petroleum Geology, 2010, 31(2):174-177.
[12]	周春香, 李相方, 李乐忠, 等. 西58-8断块边水油藏天然能量评价及开发方式[J]. 吐哈油气, 2010, 15(1):64-66.
	ZHOU Chunxiang, LI Xiangfang, LI Lezhong, et al. Evaluation of natural energy and development of West 58-8 fault block reservoir with edge water[J]. Tuha Oil & Gas, 2010, 15(1):64-66.
[13]	周春香, 李乐忠, 王敏. 西58-8小断块边水油藏天然能量评价研究[J]. 岩性油气藏, 2009, 21(4):111-114.
	ZHOU Chunxiang, LI Lezhong, WANG Min. The evaluation of natural energy for small fault block edge water reservoir[J]. Lithologic Reservoirs, 2009, 21(4):111-114.
[14]	张凌峰. 断块控制型边水油藏特征及合理开发方式:以L107和X37断块为例[D]. 河北秦皇岛:燕山大学, 2018.
	ZHANG Lingfeng. Fault block controlled edge water reservoir characteristics and reasonable development mode:taking L107 and X37 block as an example[D]. Qinhuangdao, Hebei:Yanshan University, 2018.
[15]	李秋言, 岳湘安. 聚合物滞留率对特低渗透非均质油藏调堵效果的影响:以长庆西峰油田某边底水天然能量开发油藏为例[J]. 油气地质与采收率, 2020, 144(3):85-90.
	LI Qiuyan, YUE Xiang’an. Effect of polymer retention on conformance control in ultra-low permeability heterogeneous reservoirs:a case study on reservoir with edge and bottom water produced by natural energy in Changqing Xifeng oilfield[J]. Petroleum Geology and Recovery Efficiency, 2020, 144(3):85-90.
[16]	顾文欢, 刘月田. 边水稠油油藏水平井产能影响因素敏感性分析[J]. 石油钻探技术, 2011, 39(1):89-93.
	GU Wenhuan, LIU Yuetian. Horizontal well productivity sensitivity analysis in heavy oil reservoir with edge water[J]. Petroleum Drilling Techniques, 2011, 39(1):89-93.
[17]	郑颖. 水平井开发薄层特稠油油藏的界限优化研究[J]. 断块油气田, 2006, 13(4):34-35.
	ZHENG Ying. Limit optimization of thin-bedded extra-heavy oil reservoir developed by horizontal well[J]. Fault-Block Oil & Gas Field, 2006, 13(4):34-35.
[18]	郑伟, 谭先红, 王泰超, 等. 海上稠油油田蒸汽吞吐产量确定新方法[J]. 新疆石油地质, 2020, 41(3):344-348.
	ZHENG Wei, TAN Xianhong, WANG Taichao, et al. A new method to determine initial production of steam stimulation in offshore heavy oilfield[J]. Xinjiang Petroleum Geology, 2020, 41(3):344-348.
[19]	罗波, 娄小娟. 稠油油藏边水突进影响因素分析[J]. 天然气与石油, 2019, 37(6):66-69.
	LUO Bo, LOU Xiaojuan. Analysis on influencing factors of edge water inrush in heavy oil reservoir[J]. Natural Gas and Oil, 2019, 37(6):66-69.
[20]	郭长永, 熊启勇, 邓伟兵, 等. 底水油藏水平井水平段动用状况预测方法[J]. 新疆石油地质, 2019, 40(4):468-472.
	GUO Changyong, XIONG Qiyong, DENG Weibing, et al. Methods to predict horizontal section producing status of horizontal wells in reservoirs with bottom water[J]. Xinjiang Petroleum Geology, 2019, 40(4):468-472.