近废弃油藏延长生命周期开发调整技术

doi:10.13809/j.cnki.cn32-1825/te.2024.01.017

Abstract

Abstract:

Facing the challenges of extremely high water cut, developed preferential channels, highly dispersed remaining oil, and strong heterogeneity in nearly abandoned reservoirs, the study focuses on the 4-5 layer series of the North Block II（Oil Group No. 2） in the Shuanghe Oilfield. By employing detailed reservoir geological modeling, numerical simulation methods, and microscopic displacement experiments, the distribution characteristics of remaining oil after polymer flooding were characterized. Post-polymer flooding, the remaining oil saturation is higher in areas away from the main streamlines on the macro scale, including non-mainstream areas, weak zones along main streamlines, and peripheral areas with larger injector-producer distances. Vertically, remaining oil tends to accumulate at the top of positive rhythm sequences. Microscopically, the remaining oil is primarily in the form of semi-bound state. Based on the characteristics of remaining oil distribution, a technical concept of heterogeneous composite driving and streamline well pattern densification adjustment was proposed. By adjusting the well pattern to alter streamlines, creating a staggered row and column well pattern with a change in streamline direction of over 30° and a streamline deflection rate of 80%, the effective mobilization of remaining oil is promoted. Numerical simulation predicts that this technique could increase the recovery factor by 10.96%, add 706.1 thousand tons of recoverable reserves, and extend the life cycle by 15 years. This offers a new technical approach for significantly enhancing the recovery factor of reservoirs after polymer flooding.

Key words: reservoir after polymer flooding, numerical simulation, remaining oil, encryption adjustment, heterogeneous composite flooding, enhanced oil recovery

CLC Number:

TE319

ZHANG Lianfeng,ZHANG Yilin,GUO Huanhuan,LI Hongsheng,LI Junjie,LIANG Limei,LI Wenjing,HU Shukui. Development adjustment technology of extending life cycle for nearly-abandoned reservoirs[J].Petroleum Reservoir Evaluation and Development, 2024, 14(1): 124-132.

Figures/Tables 9

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Table 1

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Table 2

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Table 4

Fig. 4

Table 5

References 21

[1]	刘海成. 特高含水油藏聚驱后非均相驱渗流规律[J]. 石油与天然气化工, 2022, 51(6): 97-103.
	LIU Haicheng. Research on flow behaviors of heterogeneous system after polymer flooding in ultra-high water cut reservoir[J]. Chemical Engineering of Oil & Gas, 2022, 51(6): 97-103.
[2]	孙焕泉, 杨勇, 王海涛, 等. 特高含水油藏剩余油分布特征与提高采收率新技术[J]. 中国石油大学学报(自然科学版), 2023, 47(5): 90-102.
	SUN Huanquan, YANG Yong, WANG Haitao, et al. Distribution characteristics of remaining oil in extra-high water cut reservoirs and new technologies for enhancing oil recovery[J]. Journal of China University of Petroleum(Edition of Natural Science), 2023, 47(5): 90-102.
[3]	张连锋, 梁丽梅, 薛国勤, 等. 双河油田Ⅳ1-3层系非均相复合驱井网调整研究[J]. 油气藏评价与开发, 2020, 10(6): 85-89.
	ZHANG Lianfeng, LIANG Limei, XUE Guoqin, et al. Well pattern adjustment for heterogeneous composite flooding in Ⅳ1-3 reservoir in Shuanghe Oilfield[J]. Reservoir Evaluation and Development, 2020, 10(6): 85-89.
[4]	刘江涛, 关小旭, 贺桃娥, 等. 纳米聚合物微球调剖剂的性能评价[J]. 石油与天然气化工, 2023, 52(4): 77-82.
	LIU Jiangtao, GUAN Xiaoxu, HE Tao'e, et al. Performance evaluation of nano-polymer microsphere profile control agent[J]. Chemical Engineering of Oil & Gas, 2023, 52(4): 77-82.
[5]	侯健, 吴德君, 韦贝, 等. 非均相复合驱非连续相渗流特征及提高驱油效率机制[J]. 中国石油大学学报(自然科学版), 2019, 43(5): 128-135.
	HOU Jian, WU Dejun, WEI Bei, et al. Percolation characteristics of discontinuous phase and mechanisms of improving oil displacement efficiency in heterogeneous composite flooding[J]. Journal of China University of Petroleum(Edition of Natural Science), 2019, 43(5): 128-135.
[6]	张卓, 王正欣, 薛国勤, 等. 中高渗胶结油藏聚合物驱后非均相复合驱技术[J]. 新疆石油地质, 2021, 42(4): 475-479.
	ZHANG Zhuo, WANG Zhengxin, XUE Guoqin, et al. Heterogeneous compound flooding technology for medium-high permeability consolidated reservoir after polymer flooding[J]. Xinjiang Petroleum Geology, 2021, 42(4): 475-479.
[7]	王增林, 史树彬, 刘希明, 等. 一种流度调控剂的合成及其在孤东油藏的适应性研究[J]. 石油与天然气化工, 2022, 51(3): 82-90.
	WANG Zenglin, SHI Shubin, LIU Ximing, et al. Synthesis of a mobility regulating agent and research of its adaptability in Gudong reservoir[J]. Chemical Engineering of Oil & Gas, 2022, 51(3): 82-90.
[8]	赵玉, 杜竞, 许鸷宇, 等. 新型两性Gemini表面活性剂制备及表界面性能[J]. 石油与天然气化工, 2022, 51(3): 111-116.
	ZHAO Yu, DU Jing, XU Zhiyu, et al. Preparation and surface performance of new amphoteric Gemini surfactants[J]. Chemical Engineering of Oil & Gas, 2022, 51(3): 111-116.
[9]	刘露, 李华斌, 申乃敏, 等. 渗透率变异系数对聚合物驱油影响的数值模拟研究[J]. 油田化学, 2011, 28(4): 414-418.
	LIU Lu, LI Huabin, SHEN Naimin, et al. Numerical simulation of the permeability variation coefficient effect on polymer flooding[J]. Oilfield Chemistry, 2011, 28(4): 414-418.
[10]	苏建栋, 黄金山, 邱坤态, 等. 改善聚合物驱效果的过程调制技术——以河南油区双河油田北块H3Ⅳ1-3层系为例[J]. 油气地质与采收率, 2013, 20(2): 91-94.
	SU Jiandong, HUANG Jinshan, QIU Kuntai, et al. Study on process control technology to improve effect of polymer flooding-case of north block H3Ⅳ1-3 strata in Shuanghe oilfield[J]. Petroleum Geology and Recovery Efficiency, 2013, 20(2): 91-94.
[11]	孙焕泉. 聚合物驱后井网调整与非均相复合驱先导试验方案及矿场应用——以孤岛油田中一区Ng3单元为例[J]. 油气地质与采收率, 2014, 21(2): 1-4.
	SUN Huanquan. Application of pilot test for well pattern adjusting heterogeneous combination flooding after polymer flooding-case of Zhongyiqu Ng3 block, Gudao oilfield[J]. Petroleum Geology and Recovery Efficiency, 2014, 21(2): 1-4.
[12]	姜颜波. 聚合物驱后油藏井网重组与化学驱复合增效技术——以孤岛油田中一区Ng3单元为例[J]. 石油地质与工程, 2014, 28(1): 91-93.
	JIANG Yanbo. Reservoir pattern reorganization and chemical flooding compound efficiency enhancement technology after polymer flooding: A case study of Ng3 unit, Zhong 1 block, Gudao Oilfield[J]. Petroleum Geology and Engineering, 2014, 28(1): 91-93.
[13]	曹伟东, 戴涛, 于金彪, 等. 非均相数值模拟方法研究与应用[J]. 石油与天然气地质, 2016, 37(4): 606-611.
	CAO Weidong, DAI Tao, YU Jinbiao, et al. Research and application of heterogeneous numerical simulation method[J]. Oil & Gas Geology, 2016, 37(4): 606-611.
[14]	曹绪龙. 非均相复合驱油体系设计与性能评价[J]. 石油学报(石油加工), 2013, 29(1): 115-121.
	CAO Xulong. Design and Performance evaluation on the heterogeneous combination flooding system[J]. Acta Petrolei Sinica(Petroleum Processing Section), 2013, 29(1): 115-121.
[15]	孙永杰. 特高含水后期厚油层油藏变流线矢量调整技术[J]. 数码设计(下), 2018, 7(7): 194.
	SUN Yongjie. Thick oil reservoir streamline variation vector control technology in later stage of ultra high water cut[J]. Peak Data Science, 2018, 7(7): 194.
[16]	李洪生. 双河油田聚合物驱后微观剩余油分布特征[J]. 西安石油大学学报(自然科学版), 2018, 33(3): 69-74.
	LI Hongsheng. Microscopic distribution characteristics of residual oil after polymer flooding in Shuanghe Oilfield[J]. Journal of Xi'an Shiyou University(Natural Science), 2018, 33(3): 69-74.
[17]	孙焕泉, 曹绪龙, 李振泉, 等. 非均相复合驱技术[M]. 北京: 石油工业出版社, 1998.
	SUN Huanquan, CAO Xulong, LI Zhenquan, et al. Heterogeneous composite flooding technology[M]. Beijing: Petroleum Industry Press, 1998.
[18]	钟玉龙, 方越, 李洪生, 等. 双河油田聚合物驱后储层参数变化规律[J]. 断块油气田, 2020, 27(3): 339-343.
	ZHONG Yulong, FANG Yue, LI Hongsheng, et al. Variation of reservoir parameters after polymer flooding in Shuanghe Oilfield[J]. Fault-Block Oil & Gas Field, 2020, 27(3): 339-343.
[19]	孙焕泉. 胜利油田三次采油技术的实践与认识[J]. 石油勘探与开发, 2006, 33(3): 262-266.
	SUN Huanquan. Practice and understanding on tertiary recovery in Shengli Oilfield[J]. Petroleum Exploration and Development, 2006, 33(3): 262-266.
[20]	陈晓彦. 非均相复合驱油体系驱替特征研究[J]. 精细石油化工进展, 2009, 10(11): 1-4.
	CHEN Xiaoyan. Study on displacement characteristics of new immiscible flooding system[J]. Advances in Fine Petrochemicals, 2009, 10(11): 1-4.
[21]	刘博, 张荣达, 张伊琳, 等. 双河油田高耗水条带影响因素及治理对策可行性研究[J]. 油气藏评价与开发, 2020, 10(6): 96-102.
	LIU Bo, ZHANG Rongda, ZHANG Yilin, et al. Influencing factors and countermeasures feasibility of high water consumption strip in Shuanghe Oilfield[J]. Reservoir Evaluation and Development, 2020, 10(6): 96-102.

层位	地质储量/10⁴t	剩余储量/10⁴t	占总剩余储量比例/%	采出程度/%	剩余储量丰度/（10⁴t/km²）
Ⅱ4²	88.55	44.60	8.93	49.63	12.20
Ⅱ4³	122.40	82.84	16.59	32.32	16.40
Ⅱ4⁴	95.84	61.19	12.26	36.15	31.50
Ⅱ5¹	158.42	75.90	15.20	52.09	36.80
Ⅱ5²	157.79	78.25	15.67	50.41	39.70
Ⅱ5³	184.01	100.44	20.12	45.42	34.10
Ⅱ4¹	43.54	26.19	5.25	39.85	5.67
Ⅱ4⁵	10.47	7.29	1.46	30.37	3.12
Ⅱ5⁴	25.56	14.03	2.81	45.11	3.45
Ⅱ5^5-6	3.39	3.25	0.65	4.16	2.34
Ⅱ5^7-8	5.42	5.31	1.06	2.14	2.67
共计	895.40	499.30	100.00

层位	自由态		半束缚态			束缚态
层位	簇状	粒间吸附状	角隅状	喉道状	膜状	孔隙沉淀状	颗粒吸附状	狭缝状
Ⅱ4^2-3	7.2	15.3	12.6	2.8	34.5	7.2	19.1	1.4
Ⅱ4⁴	3.4	10.0	14.3	2.5	40.0	6.0	22.6	1.2
Ⅱ5¹	3.9	9.0	13.0	2.5	42.4	6.2	21.7	1.4
Ⅱ5²	2.7	11.0	12.8	2.5	35.9	6.7	27.0	1.3
Ⅱ5³	2.5	12.0	12.9	2.4	39.4	7.5	22.1	1.2
Ⅱ5⁴	5.7	10.8	13.3	2.5	37.4	7.0	22.0	1.3
平均值	4.2	11.4	13.1	2.5	38.3	6.8	22.4	1.3

驱替类型	采收率	剩余油含量	不同形态剩余油绝对含量
驱替类型	采收率	剩余油含量	簇状	粒间吸附状	膜状	喉道状	角隅状
水驱	47.96	51.23	24.84	18.20	8.37	1.38	3.44
聚合物驱	54.96	35.23	13.71	10.95	6.64	1.01	2.92
聚合物驱后二元复合驱	64.67	12.05	3.32	3.57	3.66	0.32	1.18
聚合物驱后非均相复合驱	78.32	5.60	1.76	1.21	1.64	0.30	0.69

切取机理模型	新钻油井/口	新钻水井/口	累增油/10⁴t	提高采收率/%
交错300 m×300 m			1.55	3.49
交错240 m×240 m	4		2.51	5.65
交错180 m×180 m	4	4	2.96	6.65
交错120 m×120 m	9	10	3.56	8.01
正对240 m×240 m	2	2	2.39	5.37
正对180 m×180 m	6	2	2.98	6.69
正对240 m×120 m	6	4	3.48	7.83
正对120 m×120 m	10	10	3.86	8.68

方案	控制储量/10⁴t	平均井距/m	新井/口	油转注/口	油井/口	注入井/口	控制程度/%	流线转向率/%
方案1	564.4	210	21	3	41	27	64.6	69.2
方案2	615.2	230	15	5	39	29	68.7	63.7
方案3	623.1	230	10	6	41	28	69.6	48.8
方案4	580.5	270	9	8	28	18	64.9	73.6
方案5	540.0	200×280	26	7	28	24	60.3	70.9
方案6	545.3	200×140	34	9	40	32	60.9	71.8
方案7	556.4	200×140	37	10	42	35	62.2	76.1
方案8	564.4	160×160	40	5	55	35	63.1	65.8
方案9	612.5	200×180	29	16	38	35	70.1	76.9
方案10	568.0	200×180	25	12	33	28	63.5	78.4
方案11	644.3	200×220	23	20	47	38	73.6	80.2

Development adjustment technology of extending life cycle for nearly-abandoned reservoirs

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