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1 PETROLEUM EXPLORATION AND DEVELOPMENT Vol.40 No.1 79 文章编号 : (2013) 苏里格大型致密砂岩气田开发井型井网技术何东博, 贾爱林, 冀光, 位云生, 唐海发 ( 中国石油勘探开发研究院 ) 基金项目 : 国家科技重大专项大型油气田及煤层气开发 (2011ZX05015) 摘要 : 苏里格气田是中国致密砂岩气田的典型代表, 井型井网技术是其提高单井控制储量和采收率实现气田规模有效开发的关键技术针对苏里格气田大面积低丰度强非均质性的特征, 形成了大型复合砂体分级构型描述与优化布井技术井型井网优化技术水平井优化设计技术和不同类型井产能评价技术, 为苏里格气田产能建设 Ⅰ+ Ⅰ 类井比例达到 75%~80% 预期采收率提高到 35% 以上以及水平井的规模化应用发挥了重要的技术支撑作用为进一步提高苏里格气田单井产量和采收率, 应继续开展低效井侧钻多分支水平井多井底定向井等不同井型, 以及水平井井网多井型组合井网的探索和开发试验图 7 表 3 参 20 关键词 : 苏里格气田 ; 致密砂岩气田 ; 井型 ; 井网 ; 分级构型 ; 水平井 ; 单井控制储量 ; 采收率中图分类号 :TE32 文献标识码 :A Well type and pattern optimization technology for large scale tight sand gas, Sulige gas field He Dongbo, Jia Ailin, Ji Guang, Wei Yunsheng, Tang Haifa (PetroChina Research Institute of Petroleum Exploration & Development, Beijing , China) Abstract: Sulige gas field is a typical tight sand gas field in China. Well type and pattern optimization is the key technology to improve single well estimated reserves and recovery factor and to achieve effective field development. In view of the large area, low abundance and high heterogeneity of Sulige gas field, a series of techniques have been developed including hierarchical description for the reservoir architecture of large composite sand bodies and well spacing optimization, well pattern optimization, design and optimization for horizontal trajectory and deliverability evaluation for different types of gas wells. These technologies provide most important technical supports for the increases of class I and II wells proportion to 75% 80% with recovery factor enhanced by more than 35% and for the industrial application of horizontal drilling. To further improve individual well production and recovery factor, attempts and pilot tests in various well types including side tracking of deficient wells, multilateral horizontal wells, and directional wells, and horizontal well pattern and combined well pattern of various well types should be carried out throughout the development. Key words: 版 Sulige gas field; tight sand 权 gas field; well type; well pattern; 所 hierarchical description; 有 horizontal drilling; single well controlled reserves; recovery factor /km 2 [1] 20 10

2 80 Vol. 40 No m 1.1 苏里格气田基本地质特征 km ~3 600 m 4 1 [2-4] [6] 30~50 m 10 m ~ m 3 /km m 3 /km μm 2 1 3%~12% ~ 5%~12% ~ μm 2 55%~65% μm 2 50% μm 2 85% μm 2 [5] 3%~5% μm 2 30%~40% μm 2 [7] ~ μm 2 2 2~5 m 2~3 版权所有图 1 苏里格气田加密试验区储集层二元结构分布特征剖面

5 图 3 苏里格气田典型区块复合砂体分级构型砂体分布特征版权所直井和直井丛式井组有井距和单井控制面积评价 3c 2~ 5 m 200~400 m 600~800 m 10%~40% 200~400 m 600~ m 10%~ 40% 9 95% 2.2 井型和井网优化

6 84 Vol. 40 No.1 Total 4 40~130 m 700 m 1.3~1.5 9 km 2 9~18 0.2~0.4 km km m m m 400~600 m 600~ 700 m 800 m 3 /km 井网几何形态 Shell Pinedale [12] 500 m 700 m 图 4 苏里格气田 Total 合作区块丛式井布井示意图水平井井网优化技术流程版权所有 [14] 直井丛式井组优化部署 1 5~7 [13] Shell

9 图 7 苏里格气田典型水平井剖面阻流带分布特征 80% 2~ 不同井型产能评价版权所有主要评价参数和评价方法气井分类评价表 3 苏里格气田直井水平井分类评价参数表 / /m /m /(MPa h 1 (10 4 m 3 d 3 / 1 ) (10 4 m 3 d 1 ) /m / 3 / (10 4 m 3 d 1 (10 4 m 3 d 1 /m >5 8 >2.4 >10 >2 >600 >15 >60 >6 3~ ~2.4 4~10 1~2 400~600 10~15 20~60 3~6 <3 <8 <1.6 <4 <1 <400 <10 <20 <3

10 88 Vol. 40 No.1 Estimated Ultimate Rate, EUR m 3 /d 30% 10% m m 3 [18-20] 3.2 存在问题及发展趋势 m 800 m 35% 2 EUR EUR 3 60% 应用效果版权 4 所有 + 75%~80% m 3 /d 20% 10% m m m 2~3 / km 2 20% 35% m 3 /a ~1 200 m 7~10 +

11 参考文献 : [1] Kuuskraa V A. Tight gas sands development: How to dramatically improve recovery efficiency[j]. GasTIPS, 2004(Win.): [2] Surdam R C. A new paradigm for gas exploration in anomalously pressured tight gas sands in the Rocky Mountain Laramide [J]., 2011, 38(4): Li Shunming, Song Xinmin, Jiang Youwei, et al. Architecture and remaining oil distribution of the sandy braided river reservoir in the Gaoshangpu Oilfield[J]. Petroleum Exploration and Development, 2011, 38(4): [10],. [J]., 2003, 38(1): Shi Songqun, Zhao Yuhua. Research on gas-bearing prediction using AVO in sandstone reservoir with low-impedance, Sulige gas field[j]. Oil Geophysical Prospecting, 2003, 38(1): [11],,,. [J]., 2007, 12(3): Shi Songqun, Zhao Yuhua, Cheng Sijian, et al. 2D multi-wave seismic exploration technology in Sulige Gasfield of Ordos Basin[J]. Low Permeability Oil & Gas Fields, 2007, 12(3): [12] Jin Minquan, Shannon M. Introduction of exploitation experiences in Pinedale Gas Field[R]. Beijing: Seminar of Unconventional Natural Gas Exploitation, Shell and PetroChina, [13],,,. basins[c]// Surdam R C. AAPG Memoir 67: Seals, traps, and the [J]., 2011, 31(2): petroleum system. Tulsa: AAPG, 1997: He Guanghuai, Li Jinbu, Wang Jiping, et al. New progress and [3] Holditch S A. Tight gas sands[j]. JPT, 2006, 58(6): outlook of development technologies in the Sulige Gas Field[J]. [4],,. Natural Gas Industry, 2011, 31(2): [J]., 2012, 39(3): [14]. [J]., Dai Jinxing, Ni Yunyan, Wu Xiaoqi. Tight gas in China and its 2011, 38(5): significance in exploration and exploitation[j]. Petroleum Exploration and Development, 2012, 39(3): Zhao Jing. Development techniques of horizontal wells in low permeability reservoirs, Jilin Oilfield[J]. Petroleum Exploration and [5],,,. Development, 2011, 38(5): [J]., 2010, 32(6): Wen Xiaohong, Zhou Tuo, Hu Yong, et al. Experimental study of properties and influence factors of gas flow in tight core[j]. Petroleum Geology & Experiment, 2010, 32(6): [15],,,. [J]., 2011, 30(1): Hao Yuhong, Wang Yongqiang, Yang Yatao, et al. Yulin gas field north of development evaluation[j]. Petrochemical Industry Application, [6],,,. [J]. 2011, 30(1): , 2012, 39(1): Zou Caineng, Yang Zhi, Tao Shizhen, et al. Nano-hydrocarbon and the accumulation in coexisting source and reservoir[j]. Petroleum [16] Baihly J, Grant D, Fan L, et al. Horizontal wells in tight gas sands: A methodology for risk management to maximize success[r]. SPE , Exploration and Development, 2012, 39(1): [17] Bagherian B, Sarmadivaleh M, Ghalambor A, et al. Optimization of [7],,,. [J]., 2012, 39(4): He Dongbo, Wang Lijuan, Ji Guang, et al. Well spacing optimization for Sulige tight sand gas field, NW China[J]. Petroleum Exploration and Development, 2012, 39(4): multiple-fractured horizontal tight gas well[r]. SPE , [18] Blasingame T A, McCray T L, Lee W J, et al. Decline curve analysis for variable pressure drop/variable flowrate systems[r]. SPE 21513, [19] Fetkovich M J, Vienot M E, Bradley M D, et al. Decline-curve [8],, 版,. [M]. 权 : 所 analysis using type curves: 有 case histories[j]. SPE Formation, 2000: Evaluation, 1987 (Dec.): Mu Longxin, Jia Ailin, Chen Liang, et al. Detailed researching [20] Fraim M L, Wattenbarger R A. Gas reservoir decline-curve analysis methods of oil and gas reservoir[m]. Beijing: Petroleum Industry using type curves with real gas pseudopressure and normalized Press, 2000: time[j]. SPE Formation Evaluation, 1987(Dec.): [9],,,. 第一作者简介 : 何东博 (1972-), 男, 河北献县人, 博士, 中国石油勘探开发研究院高级工程师, 主要从事储集层评价和天然气开发研究工作地址 : 北京市海淀区学院路 20 号, 中国石油勘探开发研究院鄂尔多斯分院, 邮政编码 : @petrochina.com.cn 收稿日期 : 修回日期 : 单东柏刘方方

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untitled 20 1 2010 10 Vol.20 Special 1 The Chinese Journal of Nonferrous Metals Oct. 2010 1004-0609(2010)S1-s0127-05 Ti-6Al-4V 1 2 2 (1. 710016 2., 710049) 500~1 000 20 Ti-6Al-4V(TC4) TC4 800 TC4 800 TC4 TC4 800