Lithologic Reservoirs ›› 2019, Vol. 31 ›› Issue (4): 157-164.doi: 10.12108/yxyqc.20190417

• PETROLEUM ENGINEERING • Previous Articles    

Unsteady productivity model of segmented multi-cluster fractured horizontal wells in tight oil reservoir

JI Jinghao1, XI Jiahui2, ZENG Fenghuang2, YANG Qigui1   

  1. 1. No.4 Oil Production Plant, PetroChina Changqing Oilfield Company, Yulin 719000, Shaanxi, China;
    2. No.12 Oil Production Plant, PetroChina Changqing Oilfield Company, Qingyang 745000, Gansu, China
  • Received:2019-01-04 Revised:2019-04-29 Online:2019-07-21 Published:2019-06-21

PDF (PC)

424

Abstract: Aiming at the difference of seepage field for fractures between segment and cluster,based on the linear flow zoning model,the unsteady productivity model of segmented multi-cluster fractured horizontal wells in tight oil reservoir was established,in which the effects of non-Darcy flow and stress sensitivity of tight oil reservoir were considered. The oilfield example verified the correctness validity of the model. The calculation of the model shows that the threshold pressure gradient mainly affects the productivity of oil wells in the middle and late stages,and the stimulated reservoir volume(SRV)formed by reservoir transformation can effectively reduce the impact of non-Darcy flow on the productivity of oil wells in the early stage. The fracture permeability stress sensitivity has great impact on oil well production. The greater the stress sensitivity coefficient,the lower the oil well production and cumulative production. When the total number of fractures is small,the segment-cluster ratio of fractures has a greater influence on the cumulative oil production. Under the same number of fractures,the larger the segment-cluster ratio,the greater the cumulative oil production. The cumulative oil production increase gradually slows down as the SRV increases. The results can provide theoretical basis for productivity evaluation of segmented multi-cluster fractured horizontal wells in tight oil reservoir.

Key words: tight oil reservoir, segmented multi-cluster fracturing, non-Darcy flow, stress sensitivity, production model

CLC Number: 

  • TE348
[1] 魏海峰,凡哲元,袁向春. 致密油藏开发技术研究进展. 油气地质与采收率,2013,20(2):62-66. WEI H F,FAN Z Y,YUAN X C. Review on new advances in foreign tight oil development technology and their enlightenment. Petroleum Geology and Recovery Efficiency,2013,20(2):6266.
[2] 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.石油学报,2012,33(3):343-350. JIA C Z,ZOU C N,LI J Z,et al. Assessment criteria,main types,basic features and resource prospects of the tight oil in China. Acta Petrolei Sinica,2012,33(3):343-350.
[3] 郭彦如,刘俊榜,杨华,等.鄂尔多斯盆地延长组低渗透致密岩性油藏成藏机理.石油勘探与开发,2012,39(4):417-425. GUO Y R,LIU J B,YANG H,et al. Hydrocarbon accumulation mechanism of low permeable tight lithologic oil reservoirs in the Yanchang Formation,Ordos Basin,China. Petroleum Exploration and Development,2012,39(4):417-425.
[4] 蒋廷学,王海涛,卞晓冰,等.水平井体积压裂技术研究与应用. 岩性油气藏,2018,30(3):1-11. JIANG T X,WANG H T,BIAN X B,et al. Volume fracturing technology for horizontal well and its application. Lithologic Reservoirs,2018,30(3):1-11.
[5] 邓学峰.致密低渗油藏压裂水平井合理生产压差优化设计. 岩性油气藏,2017,29(1):135-139. DENG X F. Optimization of reasonable production pressure difference of fractured horizontal well in low permeability tight reservoirs. Lithologic Reservoirs,2017,29(1):135-139.
[6] 王文东,赵广渊,苏玉亮,等.致密油藏体积压裂技术应用. 新疆石油地质,2013,34(3):345-348. WANG W D,ZHAO G Y,SU Y L,et al. Application of network fracturing technology to tight oil reservoirs. Xinjiang Petroleum Geology,2013,34(3):345-348.
[7] 吴奇,胥云,王腾飞,等.增产改造理念的重大变革:体积改造技术概论.天然气工业,2011,31(4):7-12. WU Q,XU Y,WANG T F,et al. The revolution of reservoir stimulation:an introduction of volume fracturing. Natural Gas Industry,2011,31(4):7-12.
[8] 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. 石油勘探与开发,2012,39(3):352-358. WU Q,XU Y,WANG X Q,et al. Volume fracturing technology of unconventional reservoirs:Connotation,optimization design and implementation. Petroleum Exploration and Development, 2012,39(3):352-358.
[9] 王文东,苏玉亮,慕立俊,等.致密油藏直井体积压裂储层改造体积的影响因素.中国石油大学学报(自然科学版),2013, 37(3):93-97. WANG W D,SU Y L,MU L J,et al. Influencing factors of stimulated reservoir volume of vertical wells in tight oil reservoirs. Journal of China University of Petroleum(Natural Science Edition),2013,37(3):93-97.
[10] CIPOLLA C L. Modeling production and evaluating fracture performance in unconventional gas reservoirs. Journal of Petroleum Technology,2009,61(9):84-90.
[11] WANG H,LIAO X,LU N,et al. A study on development effect of horizontal well with SRV in unconventional tight oil reservoir. Journal of the Energy Institute,2014,87(2):114-120.
[12] 苏皓,雷征东,张荻萩,等.致密油藏体积压裂水平井参数优化研究.岩性油气藏,2018,30(4):140-148. SU H,LEI Z D,ZHANG D Q,et al. Volume fracturing parameters optimization of horizontal well in tight reservoir. Lithologic Reservoirs,2018,30(4):140-148.
[13] BROWN M,OZKAN E,RAGHAVAN R,et al. Practical solutions for pressure-transient responses of fractured horizontal wells in unconventional shale reservoirs. SPE Reservoir Evaluation & Engineering,2011,14(6):663-676.
[14] STALGOROVA E,MATTAR L. Analytical model for unconventional multi fractured composite systems. SPE Reservoir Evaluation & Engineering,2013,16(3):246-256.
[15] 姚军,殷修杏,樊冬艳,等.低渗透油藏的压裂水平井三线性流试井模型. 油气井测试,2011,20(5):1-5. YAO J,YIN X X,FAN D Y,et al. Trilinear-flow well test model of fractured horizontal well in low permeability reservoir. Well Testing,2011,20(5):1-5.
[16] 苏玉亮,王文东,周诗雨,等.体积压裂水平井三线性流模型与布缝策略. 石油与天然气地质,2014,35(3):435-440. SU Y L,WANG W D,ZHOU S Y,et al. Trilinear flow model and fracture arrangement of volume-fractured horizontal well. Oil & Gas Geology,2014,35(3):435-440.
[17] 赵二猛,尹洪军,张海霞.致密油藏体积压裂水平井变窜流系数模型研究. 水动力学研究与进展A辑,2016,31(4):454462. ZHAO E M,YIN H J,ZHANG H X. A study on model of volume fracturing horizontal wells with variable interporosity flow coefficient in tight oil reservoirs. Chinese Journal of Hydrodynamics,2016,31(4):454-462.
[18] 苏玉亮,王文东,盛广龙.体积压裂水平井复合流动模型.石油学报,2014,35(3):504-510. SU Y L,WANG W D,SHENG G L. Compound flow model of volume fractured horizontal well. Acta Petrolei Sinica,2014, 35(3):504-510.
[19] 姬靖皓,姚约东,马雄强,等.致密油藏体积压裂水平井不稳定压力分析. 水动力学研究与进展A辑,2017,32(4):491501. JI J H,YAO Y D,MA X Q,et al. Pressure transient analysis for volume-fractured horizontal well in tight oil reservoirs. Chinese Journal of Hydrodynamics,2017,32(4):491-501.
[20] JI J H,YAO Y D,HUANG S,et al. Analytical model for production performance analysis of multi-fractured horizontal well in tight oil reservoirs. Journal of Petroleum Science and Engineering,2017,158:380-397.
[21] 郭肖,徐模,高涛.页岩气藏压裂水平井复合线性流模型. 油气藏评价与开发,2016,6(5):72-77. GUO X,XU M,GAO T. Compound linear flow model of fractured horizontal wells in shale gas reservoir. Reservoir Evaluation and Development,2016,6(5):72-77.
[22] PEDROSA JR O A. Pressure transient response in stress-sensitive formations. SPE 15115,1986.
[23] STEHFEST H. Numerical inversion of Laplace transforms. Communications of the ACM,1970,13(1):47-49.
[24] MEYER B R,BAZAN L W,JACOT R H,et al. Optimization of multiple transverse hydraulic fractures in horizontal wellbores. SPE 131732,2010.
[25] 张芮菡,张烈辉,卢晓敏,等.低渗透裂缝性油藏压裂水平井产能动态分析. 科学技术与工程,2014,14(16):41-48. ZHANG R H,ZHANG L H,LU X M,et al. Deliverability analysis of fractured horizontal wells in low permeability fractured reservoir. Science Technology and Engineering,2014,14(16):41-48.
[26] 郝斐,程林松,李春兰,等.特低渗透油藏启动压力梯度研究. 西南石油大学学报(自然科学版),2016,28(6):29-32. HAO F,CHENG L S,LI C L,et al. Study on threshold pressure gradient in ultra-low permeability reservoir. Journal of Southwest Petroleum University(Science & Technology Edition),2016, 28(6):29-32.
[1] XIAO Boya. Characteristics and favorable zone distribution of tuff reservoirt of Cretaceous in A’nan sag，Erlian Basin [J]. Lithologic Reservoirs, 2024, 36(6): 135-148.
[2] SU Hao, GUO Yandong, CAO Liying, YU Chen, CUI Shuyue, LU Ting, ZHANG Yun, LI Junchao. Natural depletion characteristics and pressure maintenance strategies of faultcontrolled fracture-cavity condensate gas reservoirs in Shunbei Oilfield [J]. Lithologic Reservoirs, 2024, 36(5): 178-188.
[3] QIN Zhengshan, HE Yongming, DING Yangyang, LI Baihong, SUN Shuangshuang. Water invasion performance and main controlling factors for edge-water gas reservoirs [J]. Lithologic Reservoirs, 2024, 36(4): 178-188.
[4] WANG Fuyong, YANG Kun. Influence of pore throat size distribution on oil displacement by spontaneous imbibition in tight oil reservoirs [J]. Lithologic Reservoirs, 2021, 33(2): 155-162.
[5] JIANG Ruizhong, ZHANG Fulei, CUI Yongzheng, PAN Hong, ZHANG Xu, ZHANG Chunguang, SHEN Zeyang. Pressure dynamic analysis of shale gas reservoirs considering stress sensitivity and complex migration [J]. Lithologic Reservoirs, 2019, 31(4): 149-156.
[6] LI Youquan, HAN Xiuhong, YAN Yan, ZHANG Dezhi, ZHOU Zhiwei, MENG Fankun. Pressure transient analysis on CO2 huff and puff in low permeability reservoir [J]. Lithologic Reservoirs, 2017, 29(6): 119-127.
[7] HE Jixiang, JIANG Ruizhong, MAO Yu, YUAN Lin. Productivity calculation method for gas-water two phase fractured horizontal wells in tight gas reservoir [J]. Lithologic Reservoirs, 2017, 29(4): 154-161.
[8] YAN Lin, RAN Qiquan, GAO Yang, CHEN Fuli, WANG Shaojun, LI Chongfei. Characteristics and formation mechanism of dissolved pores in tight oil reservoirs of Lucaogou Formation in Jimsar Sag [J]. Lithologic Reservoirs, 2017, 29(3): 27-33.
[9] Yuan Lin，Li Xiaoping，Liu Jianjun. Productivity calculation method of fractured horizontal wells with gas-water two-phase in low permeability gas reservoirs [J]. LITHOLOGIC RESERVOIRS, 2016, 28(4): 88-94.
[10] Yuan Lin,Wang Chaoming,Li Xiaoping,Hu Xinjia,Zeng Li. Deduction and application of productivity formula for horizontal well with producing water in tightsandstone gas reservoir [J]. Lithologic Reservoirs, 2016, 28(3): 121-126.
[11] Guo Xiao， Ren Ying， Wu Hongqin. Apparent permeability model of shale gas considering stress sensitivity and adsorption [J]. LITHOLOGIC RESERVOIRS, 2015, 27(4): 109-112.
[12] FU Rao, ZHENG Rongcai, CHANG Hailiang, QI Liqi, WEN Huaguo, LI Yun. Lacustrine “ white smoke type ” exhalative rock — A new type of tight oil reservoir: A case study from Lower Permian Fengcheng Formation in Urho area, western margin of Junggar Basin [J]. Lithologic Reservoirs, 2015, 27(3): 32-42.
[13] ZHENG Xi, ZHANG Xiaoli, WANG Guomin, DU Jiangmin, ZHANG Zijie, ZHONG Gaorun. Logging evaluation methods of source rocks of tight oil of Upper Ganchaigou Formation in Zhahaquan area [J]. Lithologic Reservoirs, 2015, 27(3): 115-121.
[14] ZHANG Jiqiang， LI Xiaoping， YUAN Lin， WANG Wenbin， WANG Chaowen. Influence of non-Darcy flow on deliverability of gas-water producing horizontal well in low permeability gas reservoirs [J]. Lithologic Reservoirs, 2014, 26(6): 120-125.
[15] HUANG Xiaohai，LI Xiaoping，YUAN Lin. Deduction and application of trinomial equation for water producing gas well with abnormal pressure [J]. Lithologic Reservoirs, 2014, 26(5): 119-123.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] HUANG Sijing,HUANG Peipei,WANG Qingdong,LIU Haonian,WU Meng,ZOU Mingliang. The significance of cementation in porosity preservation in deep-buried sandstones[J]. Lithologic Reservoirs, 2007, 19(3): 7 -13 .
[2] LIU Zhen,CHEN Yanpeng,ZHAO Yang,HAO Qi,XU Xiaoming,CHANG Mai. Distribution and controlling factors of hydrocarbon reservoirs in continental fault basins[J]. Lithologic Reservoirs, 2007, 19(2): 121 -127 .
[3] DING Chao，GUO Lan，YAN Jifu. Forming conditions of Chang 6 reservoir in Anding area of Zichang Oilfield[J]. Lithologic Reservoirs, 2009, 21(1): 46 -50 .
[4] LI Yanshan，ZHANG Zhansong，ZHANG Chaomo，CHEN Peng. Application of mercury injection data to Chang 6 reservoir classification in Changqing area[J]. Lithologic Reservoirs, 2009, 21(2): 91 -93 .
[5] LUO Peng,LI Guorong,SHI Zejin,ZHOU Dazhi,TANG Hongwei,ZHANG Deming. Analysis of sequence stratigraphy and sedimentary facies of M aokou Formation in southeastern Sichuan[J]. Lithologic Reservoirs, 2010, 22(2): 74 -78 .
[6] ZUO Guoping， TU Xiaolong， XIA Jiufeng. Study on volcanic reservoir types in Subei exploration area[J]. Lithologic Reservoirs, 2012, 24(2): 37 -41 .
[7] WANG Feiyu. Method to improve producing degree of thermal recovery horizontal wells and its application[J]. Lithologic Reservoirs, 2010, 22(Z1): 100 -103 .
[8] YUAN Yunfeng，CAI Ye，FAN Zuochun，JIANG Yiyang，QIN Qirong， JIANG Qingping. Fracture characteristics of Carboniferous volcanic reservoirs in Hongche fault belt of Junggar Basin[J]. Lithologic Reservoirs, 2011, 23(1): 47 -51 .
[9] YUAN Jianying， FU Suotang， CAO Zhenglin， YAN Cunfeng，ZHANG Shuichang， MA Dade. Multi-source hydrocarbon generation and accumulation of plateau multiple petroleum system in Qaidam Basin[J]. Lithologic Reservoirs, 2011, 23(3): 7 -14 .
[10] SHI Zhanzhan， HE Zhenhua， WEN Xiaotao， TANG Xiangrong. Reservoir detection based on EMD and GHT[J]. Lithologic Reservoirs, 2011, 23(3): 102 -105 .
TRENDMD:

Copyright © 2018 Lithologic Reservoirs

Support by Beijing Magtech support@magtech.com.cn