Feasibility of inter-fracture injection and production for the same multistage fractured horizontal well in tight oil reservoir

doi:10.7623/syxb201712008

Acta Petrolei Sinica ›› 2017, Vol. 38 ›› Issue (12): 1411-1419.DOI: 10.7623/syxb201712008

• Oil Field Development • Previous Articles Next Articles

Feasibility of inter-fracture injection and production for the same multistage fractured horizontal well in tight oil reservoir

Cheng Shiqing¹, Wang Yang¹, Lang Huihui¹, Yu Haiyang¹, Zhu Changyu¹, Yang Baosong¹, Zhang Hongliang², Sun Zhongguo³

1. Key Laboratory of Petroleum Engineering of the Ministry of Education, China University of Petroleum, Beijing 102249, China;
2. No.9 Oil Production Plant, Daqing Oilfield Limited Company, Heilongjiang Daqing 163853, China;
3. Engineering Research Institute, CNPC Great Wall Drilling Company, Liaoning Panjin 124000, China

Received:2017-01-17 Revised:2017-08-22 Online:2017-12-25 Published:2018-01-05

致密油藏多级压裂水平井同井缝间注采可行性

程时清¹, 汪洋¹, 郎慧慧¹, 于海洋¹, 朱常玉¹, 杨宝松¹, 张洪亮², 孙忠国³

1. 中国石油大学石油工程教育部重点实验室北京 102249;
2. 大庆油田有限责任公司采油九厂黑龙江大庆 163853;
3. 中国石油集团长城钻探工程有限公司工程技术研究院辽宁盘锦 124000

通讯作者: 程时清,男,1963年8月生,1984年获大庆石油学院学士学位,2000年获中国科学院渗流力学研究所博士学位,现为中国石油大学(北京)教授、博士生导师,主要从事试井及油气藏工程教学及科研工作。Email:chengsq973@163.com
作者简介:程时清,男,1963年8月生,1984年获大庆石油学院学士学位,2000年获中国科学院渗流力学研究所博士学位,现为中国石油大学(北京)教授、博士生导师,主要从事试井及油气藏工程教学及科研工作。Email:chengsq973@163.com
基金资助:
国家重大科技专项（2017ZX05009-004）和国家自然科学基金石油化工联合基金项目（No.U1762101）资助。

Abstract

Abstract:

Taking the tight oil reservoir L in Daqing oilfield as an example, the effect of fracturing, modern production decline and bottom-hole pressure were analyzed, and the efficiency of quasi nature energy development, water swallowing-spitting, and CO₂ huff and puff were comprehensively evaluated. Aiming at the challenges in fast decreasing production of horizontal well in tight oil reservoir, the inter-fracture injection and production method in the same well for multistage fractured horizontal well was proposed, i.e., the injection and production separating device and valve were used for inter-fracture injection and production in the same well to transform the inter-well displacement into inter-fracture displacement. The numerical simulation method was adopted to calculate the development indexes of four patterns including quasi-nature-energy depletion development, water swallowing-spitting, CO₂ huff and puff and inter-fracture injection and production in the same well, respectively. The comparative analysis on the indexes of four development patterns shows that water swallowing-spitting can only improve cumulative oil recovery in a short term, unable to significantly improve oil recovery efficiency. The oil rate of inter-fracture injection and production in the same well is higher than that of CO₂ huff and puff, characterized by longer stable production period, smaller decline rate and better development effect. Meanwhile, the effective development method of tight oil reservoir was put forward, i.e., the quasi-natural-energy depletion development was firstly used to control the reservoir pressure with equilibrium decrease, and when the bottom-hole pressure was decreased to saturation pressure or so, it was transformed into inter-fracture asynchronous injection and production. During field implementation, the completion technology of inter-fracture strong-gel plugging for horizontal well was adopted, i.e., the strong gel was injected to interval perforation between the injection and production fractures for plugging the connected space between outer casing and rocks. Meanwhile, the injection and production separating device and valves were allocated and moderate water injection were used to play the imbibition function of fractures and control the rapid advancement of injected water, so as to improve the production and recovery efficiency of tight oil reservoirs.

Key words: tight oil reservoir, inter-fracture asynchronous injection and production, quasi natural energy, water flooding swallowing-spitting, CO₂ huff and puff

摘要：

以大庆油田L致密油藏为例，评价了L致密油藏的压裂改造效果；通过现代产量递减分析和试井分析，总结了生产动态规律；论证了水平井准天然能量、注水吞吐、注CO₂吞吐开发效果。针对致密油藏水平井产量递减快的问题，提出多级压裂水平井同井缝间注采方法，即通过注采分隔装置和注采阀进行同井缝间注采，将井间驱替问题转化为缝间驱替问题。采用数值模拟方法，分别计算了准天然能量衰竭开发、注水吞吐、CO₂吞吐、同井缝间注采4种方式的开发指标。分析结果表明，注水吞吐只能短期内提高累积采油量，不能显著提高采收率；同井缝间注采的产量比CO₂吞吐的产量高、稳产期更长、递减率更小、开发效果更好。进一步提出了致密油藏有效开发方式，即先以准天然能量衰竭式开采，控制地层压力均衡下降，在井底压力降到饱和压力附近时，转入同井缝间异步注采。现场实施时，采用水平井缝间强凝胶封堵完井工艺，即在注采缝之间的水平段射孔、注入强凝胶、封堵套管外侧与岩石连通空间。安装注采分隔装置和配注阀，采用温和注水方式，发挥裂缝的渗吸作用，能控制注入水的快速推进，提高致密油藏产量和采收率。

关键词: 致密油藏, 缝间异步注采, 准天然能量, 注水吞吐, CO₂吞吐

CLC Number:

TE348

Cheng Shiqing, Wang Yang, Lang Huihui, Yu Haiyang, Zhu Changyu, Yang Baosong, Zhang Hongliang, Sun Zhongguo. Feasibility of inter-fracture injection and production for the same multistage fractured horizontal well in tight oil reservoir[J]. Acta Petrolei Sinica, 2017, 38(12): 1411-1419.

程时清, 汪洋, 郎慧慧, 于海洋, 朱常玉, 杨宝松, 张洪亮, 孙忠国. 致密油藏多级压裂水平井同井缝间注采可行性[J]. 石油学报, 2017, 38(12): 1411-1419.

References

[1] 贾承造,邹才能,李建忠,等. 中国致密油评价标准、主要类型、基本特征及资源前景[J].石油学报,2012,33(3):343-350.
JIA Chengzao,ZOU Caineng,LI Jianzhong,et al.Assessment criteria,main types,basic features and resource prospects of the tight oil in China[J].Acta Petrolei Sinica,2012,33(3):343-350.
[2] 邹才能,张国生,杨智,等.非常规油气概念、特征、潜力及技术——兼论非常规油气地质学[J].石油勘探与开发,2013,40(4):385-399.
ZOU Caineng,ZHANG Guosheng,YANG Zhi,et al.Geological concepts,characteristics,resource potential and key techniques of unconventional hydrocarbon:on unconventional petroleum geology[J].Petroleum Exploration and Development, 2013,40(4):385-399.
[3] 朱如凯,吴松涛,苏玲,等.中国致密储层孔隙结构表征需注意的问题及未来发展方向[J].石油学报,2016,37(11):1323-1336.
ZHU Rukai,WU Songtao,SU Ling,et al.Problems and future works of porous texture characterization of tight reservoirs in China[J].Acta Petrolei Sinica,2016,37(11):1323-1336.
[4] 朱如凯,吴松涛,苏玲,等.中国致密储层孔隙结构表征需注意的问题及未来发展方向[J].石油学报,2016,37(11):1323-1336.
ZHU Rukai,WU Songtao,SU Ling,et al.Problems and future works of porous texture characterization of tight reservoirs in China[J].Acta Petrolei Sinica,2016,37(11):1323-1336.
[5] 杜金虎,刘合,马德胜,等.试论中国陆相致密油有效开发技术[J].石油勘探与开发,2014,41(2):198-205.
DU Jinhu,LIU He,MA Desheng,et al.Discussion on effective development techniques for continental tight oil in China[J].Petroleum Exploration and Development,2014,41(2):198-205.
[6] 张君峰,毕海滨,许浩,等.国外致密油勘探开发新进展及借鉴意义[J].石油学报,2015,36(2):127-137.
ZHANG Junfeng,BI Haibin,XU Hao,et al.New progress and reference significance of overseas tight oil exploration and development[J].Acta Petrolei Sinica,2015,36(2):127-137.
[7] GHADERI S M,CLARKSON C R,KAVIANI D.Evaluation of recovery performance of miscible displacement and WAG processes in tight oil formations[R].SPE 152084,2012.
[8] WAN T,SHENG J J,SOLIMAN M Y.Evaluation of the EOR Potential in shale oil reservoirs by cyclic gas injection:SPWLA 54th Annual Logging Symposium,22-26 June 2013[C].New Orleans:Society of Petrophysicists and Well-Log Analysts,2013.
[9] WAN T,SHENG J J,SOLIMAN M Y.Evaluate EOR potential in fractured shale oil reservoirs by cyclic gas injection[R].SPE 168880,2013.
[10] 李忠兴,屈雪峰,刘万涛,等.鄂尔多斯盆地长7段致密油合理开发方式探讨[J].石油勘探与开发,2015,42(2):217-221.
LI Zhongxing,QU Xuefeng,LIU Wantao,et al.Development modes of Triassic Yanchang Formation Chang 7 Member tight oil in Ordos Basin,NW China[J].Petroleum Exploration and Development,2015,42(2):217-221.
[11] 樊建明,杨子清,李卫兵,等.鄂尔多斯盆地长7致密油水平井体积压裂开发效果评价及认识[J].中国石油大学学报:自然科学版,2015,39(4):103-110.
FAN Jianming,YANG Ziqing,LI Weibing,et al.Assessment of fracturing treatment of horizontal wells using SRV technique for Chang-7 tight oil reservoir in Ordos Basin[J].Journal of China University of Petroleum:Edition of Natural Science, 2015,39(4):103-110.
[12] 李晓辉.致密油注水吞吐采油技术在吐哈油田的探索[J].特种油气藏,2015,22(4):144-146.
LI Xiaohui.Exploration of water swallowing-spitting recovery for tight oil reservoir in Tuha oilfield[J].Special Oil & Gas Reservoirs,2015,22(4):144-146.
[13] 陈章顺,王平平,杨博,等.安83区水平井第二周期注水吞吐采油试验可行性分析[J].石油化工应用,2015,34(7):53-56.
CHEN Zhangshun,WANG Pingping,YANG Bo,et al.The test feasibility of the second cycle of water swallowing spitting injection oil production of An 83 horizontal well[J].Petrochemical Industry Application,2015,34(7):53-56.
[14] SONG Chengyao,YANG Daoyong.Performance evaluation of CO₂ huff-n-puff processes in tight oil formations[R].SPE 167217,2013.
[15] YU W,LASHGARI H,SEPEHRNOORI K.Simulation study of CO₂ huff-n-puff process in bakken tight oil reservoirs[R].SPE 169575,2014.
[16] 高慧梅,谭学群,何应付.致密油藏多级压裂水平井CO₂吞吐潜力评价模型[J].科学技术与工程,2014,14(27):207-210.
GAO Huimei,TAN Xuequn,HE Yingfu.A potential prediction model of CO₂ huff and puff for multi-stage fracture horizontal well[J].Science Technology and Engineering, 2014,14(27):207-210.
[17] 杨正明,刘学伟,张仲宏,等.致密油藏分段压裂水平井注二氧化碳吞吐物理模拟[J].石油学报,2015,36(6):724-729.
YANG Zhengming,LIU Xuewei,ZHANG Zhonghong,et al.Phsical simulation of staged-fracturing horizontal wells using CO₂ huff and puff in tight oil reservoirs[J].Acta Petrolei Sinica,2015,36(6):724-729.
[18] 周拓,刘学伟,王艳丽,等.致密油藏水平井分段压裂CO₂吞吐实验研究[J].西南石油大学学报:自然科学版,2017,39(2):125-131.
ZHOU Tuo,LIU Xuewei,WANG Yanli,et al.Experiments of CO₂ huff-n-puff process in staged fracturing horizontal wells for developing tight oil reservoirs[J].Journal of Southwest Petroleum University:Science & Technology Edition, 2017,39(2):125-131.
[19] HE Youwei,CHENG Shiqing,LI Shuang,et al.A semianalytical methodology to diagnose the locations of underperforming hydraulic fractures through pressure-transient analysis in tight gas reservoir[R].SPE 185166,2016.
[20] HE Youwei,CHENG Shiqing,QIN Jiazheng,et al.A semianalytical approach to estimate the locations of malfunctioning horizontal wellbore through bottom-hole pressure and its application in Hudson oilfield[R].SPE 183796,2017.

Feasibility of inter-fracture injection and production for the same multistage fractured horizontal well in tight oil reservoir

致密油藏多级压裂水平井同井缝间注采可行性

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 10

Recommended Articles

Metrics

Comments

[1]	Huang Xing, Li Xiang, He Mengqing, He Xiaoming, Li Tiantai, Zhang Rongjun. Characteristics of asphaltene precipitation and formation damage of tight light oil reservoirs under different CO₂ injection modes [J]. Acta Petrolei Sinica, 2021, 42(12): 1665-1674.
[2]	Kang Yili, Tian Jian, Luo Pingya, You Lijun, Liu Xuefen. Technical bottlenecks and development strategies of enhancing recovery for tight oil reservoirs [J]. Acta Petrolei Sinica, 2020, 41(4): 467-477.
[3]	Sun Ke, Liu Huiqing, Wang Teng, Zhang Hongling, Xie Jianyong. A novel method for predicting recoverable reserves of single well through depletion-drive development after fracturing in tight oil reservoirs [J]. Acta Petrolei Sinica, 2020, 41(10): 1238-1247.
[4]	Fan Jianming, Wang Chong, Qu Xuefeng, Cheng Liangbing, Xue Ting. Development and practice of water flooding huff-puff in tight oil horizontal well, Ordos Basin: a case study of Yanchang Formation Chang 7 oil layer [J]. Acta Petrolei Sinica, 2019, 40(6): 706-715.
[5]	Yang Zhengming, Huang Hui, Luo Yutian, Lei Qihong, Li Haibo. New measurement method of mixed wettability in tight oil reservoir and its application [J]. Acta Petrolei Sinica, 2017, 38(3): 318-323.
[6]	Yang Zhengming, Liu Xuewei, Zhang Zhonghong, Zhou Tuo, Zhao Shuxia. Physical simulation of staged-fracturing horizontal wells using CO₂ huff and puff in tight oil reservoirs [J]. Acta Petrolei Sinica, 2015, 36(6): 724-729.
[7]	Ren Long, Su Yuliang, Hao Yongmao, Zhang Qi, Meng Fankun, Sheng Guanglong. Dynamic analysis of SRV-fractured horizontal wells in tight oil reservoirs based on stimulated patterns [J]. Acta Petrolei Sinica, 2015, 36(10): 1272-1279.
[8]	Yang Zhengming, Zhang Zhonghong, Liu Xuewei, Tian Wenbo, Xu Qingyan. Physical and numerical simulation of porous flow pattern in multi-stage fractured horizontal wells in low permeability/tight oil reservoirs [J]. ACTA PETROLEI SINICA, 2014, 35(1): 85-92.
[9]	YANG Hua　LI Shixiang　LIU Xianyang . Characteristics and resource prospects of tight oil and shale oil in Ordos Basin [J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(1): 1-11.
[10]	JIA Chengzao　ZOU Caineng　LI Jianzhong　LI Denghua　ZHENG Min. Assessment criteria, main types, basic features and resource prospects of the tight oil in China [J]. Editorial office of ACTA PETROLEI SINICA, 2012, 33(3): 343-350.