致密油藏大排量注水吞吐技术及参数优化研究

doi:10.13809/j.cnki.cn32-1825/te.2024.05.007

Abstract

Abstract:

To address the issue of low natural imbibition recovery in horizontal wells within tight reservoirs and the challenge of replenishing formation energy during extended depletion phases, a strategy involving water injection huff and puff in large displacement horizontal wells was proposed. This approach builds on the fundamental characteristics of reservoirs and the established mechanisms of water injection huff and puff oil production in tight reservoirs. The research focused on the Chang-7 tight reservoir in Ordos Basin, employing a combination of natural and artificial cores. This study explored the range of natural imbibition and the dynamics of water injection and huff and puff across various displacements. Methods like nuclear magnetic resonance were used to analyze the characteristics of microscopic pore production, the impact of displacement on pore productivity, and the effects of soaking time. The findings reveal that with smaller displacements, mainly large pores are utilized for water injection, resulting in minimal engagement of small and medium pores. Conversely, higher water injections significantly enhance the involvement of small and medium-sized pores, thus substantially boosting the overall recovery rate. Additionally, as the simmering time is extended, the oil-water displacement effect increases, enhancing the degree of recovery through water injection huff and puff, though the rate of improvement eventually stabilizes. Numerical simulation was used to optimize the parameters for water injection huff and puff development in fracturing horizontal wells. For Well-A9, the optimal parameters were identified as a daily water injection rate of 900 m³ and a simmering time of 24 days. The field test confirmed the effectiveness of these parameters, with an initial daily oil increase of 2.11 tons, an effective period of 365 days, and a cumulative oil increase of 770 tons.

Key words: large displacement water injection, tight oil reservoir, horizontal well, nuclear magnetic resonance, numerical simulation

CLC Number:

TE357.6

ZHANG Yi,NING Chongru,CHEN Yazhou, et al. Huff-n-puff technology and parameter optimization of large displacement water injection in tight oil reservoir[J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 727-733.

Figures/Tables 16

Table 1

Fig. 1

Table 2

Fig. 2

Table 3

Fig. 3

Fig. 4

Table 4

Table 5

Table 6

Fig. 5

Fig. 6

Table 7

Fig. 7

Fig. 8

Fig. 9

References 25

[1]	胡泽根, 马宇奔, 李明峰, 等. 致密油提高采收率技术研究进展[J]. 石油化工应用, 2023, 42(3): 5-11.
	HU Zegen, MA Yuben, LI Mingfeng, et al. Research progress of enhanced oil recovery technology for tight oil[J]. Petrochemical Industry Applications, 2023, 42(3): 5-11.
[2]	郭省学, 王庆, 张彪. 裂缝性稠油油藏动态渗吸实验研究[J]. 科学技术与工程, 2019, 19(25): 135-142.
	GUO Xingxue, WANG Qing, ZHANG Biao. Experimental study on dynamic imbibition in fractured heavy oil reservoirs[J]. Science Technology and Engineering, 2019, 19(25): 135-142.
[3]	胡伟, 张蕾, 石立华, 等. 致密油藏动态渗吸实验及主控因素[J]. 科学技术与工程, 2023, 23(10): 4157-4167.
	HU Wei, ZHANG Lei, SHI Lihua, et al. Dynamic imbibition experiment and main controlling factors in tight reservoirs[J]. Science Technology and Engineering, 2023, 23(10): 4157-4167.
[4]	蒲春生, 康少飞, 蒲景阳, 等. 中国致密油藏水平井注水吞吐技术进展与发展趋势[J]. 石油学报, 2023, 44(1): 188-206. doi: 10.7623/syxb202301012
	PU Chunsheng, KANG Shaofei, PU Jingyang, et al. Progress and development trend of water huff-n-puff technology for horizontal wells in tight oil reservoirs in China[J]. Acta Petrolei Sinica, 2023, 44(1): 188-206. doi: 10.7623/syxb202301012
[5]	钟会影, 余承挚, 沈文霞, 等. 考虑启动压力梯度的致密油藏水平井裂缝干扰渗流特征[J]. 岩性油气藏, 2024, 36(3): 172-179.
	ZHONG Huiying, YU Chengzhi, SHEN Wenxia, et al. Characteristics of fracture interference between horizontal wells in tight reservoirs considering threshold pressure gradient[J]. Lithologic Reservoirs, 2024, 36(3): 172-179.
[6]	张益, 卜向前, 齐银, 等. 鄂尔多斯盆地姬塬油田长7段页岩油藏地质工程一体化油藏开发对策: 以安83井区为例[J]. 中国石油勘探, 2022, 27(5): 116-129. doi: 10.3969/j.issn.1672-7703.2022.05.011
	ZHANG Yi, BU Xiangqian, QI Yin, et al. Geology and engineering integrated development countermeasures of Chang 7 member shale oil reservoir in Jiyuan Oilfield, Ordos Basin: A case study of An 83 well block[J]. China Petroleum Exploration, 2022, 27(5): 116-129. doi: 10.3969/j.issn.1672-7703.2022.05.011
[7]	吴志远, 曾顺鹏, 黄琪, 等. 低渗透砂岩油藏动态渗吸规律研究[J]. 中国石油和化工标准与质量, 2019, 39(20): 142-143.
	WU Zhiyuan, ZENG Shunpeng, HUANG Qi, et al. Study on dynamic imbibition law of low permeability sandstone reservoirs[J]. China Petroleum and Chemical Industry Standards and Quality, 2019, 39(20): 142-143.
[8]	王栋, 展转盈, 马彬. 致密油储层注水吞吐动态渗吸特征及影响因素[J]. 西安石油大学学报(自然科学版), 2021, 36(2): 50-56.
	WANG Dong, ZHAN Zhuanying, MA Bin. Dynamic imbibition characteristics and influencing factors of water injection huff-puff in tight oil reservoir[J]. Journal of Xi'an Shiyou University(Natural Science Edition), 2021, 36(2): 50-56.
[9]	王晨光. 致密砂岩油藏不同边界条件下自发渗吸特征[J]. 西安石油大学学报(自然科学版), 2021, 36(3): 58-65.
	WANG Chenguang. Spontaneous imbibition characteristics in tight sandstone reservoirs under different boundary conditions[J]. Journal of Xi'an Shiyou University(Natural Science Edition), 2021, 36(3): 58-65.
[10]	刘先山, 孙军昌, 郭和坤, 等. 低渗火山岩气藏渗吸机理实验研究[J]. 西安石油大学学报(自然科学版), 2021, 36(1): 45-51.
	LIU Xianshan, SUN Junchang, GUO Hekun, et al. Experimental study of imbibition mechanism in low permeability volcanic gas reservoir[J]. Journal of Xi'an Shiyou University(Natural Science Edition), 2021, 36(1): 45-51.
[11]	王振宇, 王磊, 汪杰, 等. 泾河长8裂缝性致密油藏渗吸吞吐可行性实验研究[J]. 西安石油大学学报(自然科学版), 2021, 36(6): 50-55.
	WANG Zhenyu, WANG Lei, WANG Jie, et al. Experimental study on imbibition huff-puff of Chang 8 fractured tight oil reservoir in Jinghe[J]. Journal of Xi'an Shiyou University(Natural Science Edition), 2021, 36(6): 50-55.
[12]	吴奇, 胥云, 王晓泉, 等. 非常规油气藏体积改造技术: 内涵、优化设计与实现[J]. 石油勘探与开发, 2012, 39(3): 352-358.
	WU Qi, XU Yun, WANG Xiaoquan, et al. Volume fracturing technology of unconventional reservoirs: Connotation, optimization design and implementation[J]. Petroleum Exploration and Development, 2012, 39(3): 352-358.
[13]	黄大志, 向丹. 注水吞吐采油机理研究[J]. 油气地质与采收率, 2004, 11(5): 39-40.
	HUANG Dazhi, XIANG Dan. Study on the mechanism of injection huff-puff oil recovery[J]. Petroleum Geology and Recovery Efficiency, 2004, 11(5): 39-40.
[14]	李帅, 丁云宏, 才博, 等. 致密油藏体积压裂水平井数值模拟及井底流压分析[J]. 大庆石油地质与开发, 2016, 35(4): 156-160.
	LI Shuai, DING Yunhong, CAI Bo, et al. Numerical simulation and bottomhole producing pressure analysis for the volume-fractured horizontal well in tight oil reservoirs[J]. Petroleum Geology & Oilfield Development in Daqing, 2016, 35(4): 156-160.
[15]	邓燕. 大位移井水力压裂裂缝起裂机理研究及应用[D]. 成都: 西南石油学院, 2003.
	DENG Yan. Research and application of hydraulic fracturing fracture initiation mechanism in extended reach wells[D]. Chengdu: Southwest Petroleum Institute, 2003.
[16]	肖曾利, 秦文龙, 肖荣鸽, 等. 低能量井注水吞吐采油主要影响因素及其规律研究[C]// 中国力学学会, 中国石油学会, 中国水利学会, 中国地质学会. 第九届全国渗流力学学术讨论会论文集(二). 《西安石油大学学报》编辑部, 2007: 2.
	XIAOZengli, QINWenlong, XIAORongge, et al. Study on main influencing factors and regularities of huff and puff oil recovery in low-energy wells[C]// Chinese Society of Mechanics, Chinese Petroleum Society, Chinese Hydraulic Society, Geological Society of China. Proceedings of The 9th National Symposium on Seepage Mechanics(Ⅱ). The Editorial Board of Journal of Xi'an Shiyou University, 2007: 2.
[17]	朱维耀, 鞠岩, 赵明, 等. 低渗透裂缝性砂岩油藏多孔介质渗吸机理研究[J]. 石油学报, 2002, 23(6): 56-59.
	ZHU Weiyao, JU Yan, ZHAO Ming, et al. Spontaneous imbibition mechanism of flow through porous media and waterflooding in low-permeability fractured sandstone reservoir[J]. Acta Petrolei Sinica, 2002, 23(6): 56-59.
[18]	崔鹏兴, 侯玢池, 孟选刚, 等. 超低渗透储层注水吞吐微观油水运移特征[J]. 新疆石油天然气, 2023, 19(1): 8-15.
	CUI Pengxing, HOU Binchi, MENG Xuangang, et al. Micro-scale oil and water migration characteristics of water-injection huff and puff in ultra-low permeability reservoirs[J]. Xinjiang Oil & Gas, 2023, 19(1): 8-15.
[19]	王香增, 赵习森, 党海龙, 等. 基于核磁共振的致密油藏自发渗吸及驱替特征研究[J]. 地球物理学进展, 2020, 35(5): 1870-1877.
	WANG Xiangzeng, ZHAO Xisen, DANG Hailong, et al. Study on spontaneous imbibition and displacement characteristics of tight reservoirs based on nuclear magnetic resonance[J]. Progress in Geophysics, 2020, 35(5): 1870-1877.
[20]	何贤, 闫建平, 王敏, 等. 低渗透砂岩孔隙结构与采油产能关系:以东营凹陷南坡F154区块为例[J]. 岩性油气藏, 2022, 34(1): 106-117.
	HE Xian, YAN Jianping, WANG Min, et al. Relationship between pore structure and oil production capacity of low permeability sandstone:A case study of block F154 in south slope of Dongying Sag[J]. Lithologic Reservoirs, 2022, 34(1): 106-117.
[21]	LAI F P, LI Z P, ZHANG T T, et al. Characteristics of microscopic pore structure and its influence on spontaneous imbibition of tight gas reservoir in the Ordos Basin, China[J]. Journal of Petroleum Science & Engineering, 2019, 172: 23-31.
[22]	王向阳, 刘学伟, 杨正明, 等. 注入体积对注水吞吐效果的影响[J]. 中国科技论文, 2017, 12(21): 2497-2500.
	WANG Xiangyang, LIU Xuewei, YANG Zhengming, et al. Influence of injection volume on the effect of water injection huff and puff[J]. China Sciencepaper, 2017, 12(21): 2497-2500.
[23]	陶登海, 詹雪函, 高敬文, 等. 三塘湖盆地马中致密油藏注水吞吐探索与实践[J]. 石油钻采工艺, 2018, 40(5): 614-619.
	TAO Denghai, ZHAN Xuehan, GAO Jingwen, et al. Study and practice of cyclic water injection in Mazhong tight oil reservoir in the Santanghu Basin[J]. Oil Drilling & Production Technology, 2018, 40(5): 614-619.
[24]	隋阳, 刘德基, 刘建伟, 等. 低成本致密油层水平井重复压裂新方法: 以吐哈油田马56区块为例[J]. 石油钻采工艺, 2018, 40(3): 369-374.
	SUI Yang, LIU Deji, LIU Jianwei, et al. A new low-cost refracturing method of horizontal well suitable for tight oil reservoir: A case study on Ma 56 Block in Tuha Oilfield[J]. Oil Drilling & Production Technology, 2018, 40(3): 369-374.
[25]	代旭. 大液量注水吞吐技术在致密油藏水平井中的应用[J]. 大庆石油地质与开发, 2017, 36(6): 134-139.
	DAI Xu. Application of massive waterflooding huff-puff technique in the tight oil reservoir for horizontal wells[J]. Petroleum Geology & Oilfield Development in Daqing, 2017, 36(6): 134-139.

岩心编号	层位	直径/ cm	长度/ cm	孔隙介质类型	孔隙度/ %	渗透率/ 10^-3 μm²
1	长7段	2.50	3.51	单一	9.96	0.41
2	长7段	2.50	3.50	双重	9.96	0.55
3	长7段	2.51	3.52	单一	9.50	0.26
4	长7段	2.50	3.49	双重	9.50	0.42

岩心编号	孔隙介质类型	注入速度/(mL/min)	驱油效率/%
1	单一	0.02	20.960
		0.04	29.056
		0.06	36.160
		0.08	36.920
2	双重	0.02	20.560
		0.04	28.536
		0.06	36.376
		0.08	37.704

样品编号	孔隙介质类型	注水速度/(mL/min)	驱油效率/%
3	单一	0.02	19.120
		0.04	27.376
		0.06	32.768
		0.08	33.568
4	双重	0.02	20.480
		0.04	29.360
		0.06	35.312
		0.08	36.352

岩心编号	长度/ cm	直径/ cm	驱替压差/MPa	围压/ MPa	注水速度/ （mL/min）	孔隙介质类型	焖井时间/ h	渗透率/10^-3 μm²	孔隙度/ %	饱和油量/mL	采出油量/mL	驱油效率/ %
8	4.95	2.5	20	23	0.06	单一	96	0.55	5.10	1.315	0.55	41.19
11	4.62	2.5	20	23	0.06	单一	72	0.53	4.70	1.312	0.52	40.30
12	4.9	2.5	20	23	0.06	单一	24	0.52	3.90	1.191	0.44	36.94
15	4.83	2.5	20	23	0.06	单一	48	0.47	4.73	1.114	0.44	39.20

岩心编号	长度/cm	直径/cm	驱替压差/MPa	围压/ MPa	注水速度/ （mL/min）	孔隙介质类型	吞吐一次焖井时间/h	渗透率/ 10^-3 μm²	孔隙度/ %	饱和油量/ mL	采出油量/ mL	驱油效率/ %
15	4.83	2.5	20	23	0.06	单一	48	0.47	4.73	1.114	0.44	39.20
13	4.83	2.5	20	23	0.06	双重	48	1.52	9.13	2.158	1.06	49.08

Huff-n-puff technology and parameter optimization of large displacement water injection in tight oil reservoir

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 16

References 25

Related Articles 15

Metrics

Comments

Recommended 0

方案	日注水量/ m³	注水天数/ d	累计注水量/ m³	焖井时间/ d	日产液量/ m³
方案1	500	10	5 000	20	30
方案2	600	10	6 000	20	30
方案3	700	10	7 000	20	30
方案4	800	10	8 000	20	30
方案5	900	10	9 000	20	30
方案6	1 000	10	10 000	20	30
方案7	1 100	10	11 000	20	30

[1]	CAO Xiaopeng, LIU Haicheng, LI Zhongxin, CHEN Xianchao, JIANG Pengyu, FAN Hao. Optimization of huff-n-puff in shale oil horizontal wells based on EDFM [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 734-740.
[2]	LIAO Kai, ZHANG Shicheng, XIE Bobo. Simulation of reasonable shut-in time for shale oil after volume fracturing [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 749-755.
[3]	LIU Wei, CAO Xiaopeng, HU Huifang, CHENG Ziyan, BU Yahui. Production influencing factors analysis and fracturing parameters optimization of shale oil horizontal wells [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 764-770.
[4]	CHEN Xiang, WANG Guan, LIU Pingli, DU Juan, WANG Ming, CHEN Weihua, LI Jinlong, LIU Jinming, LIU Fei. Experimental and simulation study on fracture conductivity of acid-fracturing in Dengying Formation of Sichuan Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(4): 569-576.
[5]	YANG Zhaozhong, YUAN Jianfeng, ZHANG Jingqiang, LI Xiaogang, ZHU Jingyi, HE Jiangang. Research progress and understanding of fracturing fractures in horizontal wells of marine shale in Sichuan Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(4): 600-609.
[6]	LI Xuebin,JIN Lixin,CHEN Chaofeng,YU Tianxi,XIANG Yingjie,YI Duo. Key technologies of horizontal well fracturing for deep coal-rock gas: A case study of Jurassic in Baijiahai area, Junggar Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(4): 629-637.
[7]	GAI Changcheng,ZHAO Zhongxin,REN Lu,YAN Yican,HOU Benfeng. Research and application of well location deployment parameters for cluster development of medium-deep hydrothermal geothermal resources: A case study of HTC geothermal field [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(4): 638-646.
[8]	DUAN Hongliang,SHEN Tingshan,SUN Jing,HONG Yafei,LI Sichen,LU Xianrong,ZHANG Zhengyang. Experimental study of oil matrix and fracture flow capacity of shale oil in Subei Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(3): 333-342.
[9]	ZHAO Haifeng, WANG Tengfei, LI Zhongbai, LIANG Wei, ZHANG Tao. Study on dynamic stress field for fracturing in horizontal well group of shale oil [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(3): 352-363.
[10]	CHEN Xuezhong, ZHAO Huiyan, CHEN Man, XU Huaqing, YANG Jianying, YANG Xiaomin, TANG Huiying. Numerical simulation of multi-layer co-production in marine-continental transitional shale reservoirs [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(3): 382-390.
[11]	TANG Huiying, DI Kaixiang, ZHANG Liehui, GUO Jingjing, ZHANG Tao, TIAN Ye, ZHAO Yulong. Tight oil imbibition based on nuclear magnetic resonance signal calibration method [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(3): 402-413.
[12]	MA Daixin,REN Xianjun,ZHAO Mifu,HAN Jiaoyan,LIU Yuhu. Theories, technologies and practices of exploration and development of volcanic gas reservoirs: A case study of Cretaceous volcanic rocks in Songnan fault depression [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(2): 167-175.
[13]	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.
[14]	ZHANG Zhichao,BAI Mingxing,DU Siyu. Characteristics of pore dynamics in shale reservoirs by CO₂ flooding [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(1): 42-47.
[15]	CUI Yudong, LU Cheng, GUAN Ziyue, LUO Wanjing, TENG Bailu, MENG Fanpu, PENG Yue. Effects of creep on depressurization-induced gas well productivity in South China Sea natural gas hydrate reservoirs [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(6): 809-818.