普光水平井投产一体化管柱及参数优化
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摘要
普光气田水平井具有井深、射孔井段跨度大、射孔厚度大的特点,储层层间非均质性非常严重,Ⅰ类、Ⅱ类和Ⅲ类储层交错分布,部分井存在边底水。为了实现水平井段均匀布酸、提高酸化效果、稳气控水等目的,通过对水平段注酸井筒流动压力分布、吸液强度分析,确定出普光水平井投产一体化管柱的封隔器卡封段级数、滑套下入位置、滑套孔径、孔数、尾管下入深度等参数。通过理论分析和数值模拟计算,研究了普光高含硫水平井不同完井方式下的酸压(化)投产一体化管住的结构及参数优化方法,为高含硫气田水平井分段酸压(化)管柱设计提供了技术思路,提高了普光水平井的酸压(化)效果。
Horizontal wells in Puguang Gasfield are characterized by significant depth, long and thick perforated intervals. With crisscrossing of Class I, Class II and Class III reservoir formations, relevant reservoirs have severe heterogeneity. Some wells may even contain bottom or edge water. To evenly distribute acid in horizontal intervals to enhance acidification performances, stabilize gas production and minimize water production, fluid-absorption intensities of the formation have been reviewed to determine stages of packers, installation positions of sleeves, diameters of sleeves, the quantity of pores, depth of tailpipe and other essential parameters for integral pipe-string required for production of horizontal well in Puguang Gasfield. Through theoretical analyses and numerical simulation, structures of integral pipe-string and optimal operational parameters for production of horizontal wells with different completions in high-sulfur Puguang Gasfield have been highlighted. Relevant research results may provide technical guidelines for designing tool string for multi-stage acidization and improving acidization operation in horizontal wells for development of high-sulfur Puguang Gasfield.
Horizontal wells in Puguang Gasfield are characterized by significant depth, long and thick perforated intervals. With crisscrossing of Class I, Class II and Class III reservoir formations, relevant reservoirs have severe heterogeneity. Some wells may even contain bottom or edge water. To evenly distribute acid in horizontal intervals to enhance acidification performances, stabilize gas production and minimize water production, fluid-absorption intensities of the formation have been reviewed to determine stages of packers, installation positions of sleeves, diameters of sleeves, the quantity of pores, depth of tailpipe and other essential parameters for integral pipe-string required for production of horizontal well in Puguang Gasfield. Through theoretical analyses and numerical simulation, structures of integral pipe-string and optimal operational parameters for production of horizontal wells with different completions in high-sulfur Puguang Gasfield have been highlighted. Relevant research results may provide technical guidelines for designing tool string for multi-stage acidization and improving acidization operation in horizontal wells for development of high-sulfur Puguang Gasfield.
引文
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[13]李根生,盛茂,田守嶒,黄中伟,李元斌,袁学芳.水平井水力喷射分段酸压技术[J].石油勘探与开发,2012,39(1):100-104.LI Gensheng,SHENG Mao,TIAN Shouzeng,HUANG Zhongwei,LI Yuanbin,YUAN Xuefang.Multistage hydraulic jet acid fracturing technique for horizontal wells[J].Petroleum Exploration and Development,2012,39(1):100-104.
[2]孔凡群,王寿平,曾大乾.普光高含硫气田开发关键技术[J].天然气工业,2011,31(3):1-4.KONG Fanqun,WANG Shouping,ZENG Daqian.Key techniques for the development of the Puguang gas field with a high content of H2S[J].Natural Gas Industry,2011,31(3):1-4.
[3]刘杰,何冶,乐宏,王宁,张平,邓春晓,刘文忠,杨涛.川渝地区高酸性气井完井投产技术及实践[J].天然气工业,2006,26(1):72-75.LIU Jie,HE Zhi,LE Hong,WANG Ning,ZHANG Ping,DENG Chunxiao,LIU Wenzhong,YANG Tao.Technology and practice of well completion and putting into production for gas wells with high sulfur content in Sichuan and Chongqing areas[J].Natural Gas Industry,2006,26(1):72-75.
[4]何新明,陈冀嵋,吴安林.油气藏酸压工艺技术现状与发展[J].断块油气田,2009,16(2):95-98.HE Xinming,CHEN Jimei,WU Anlin.Present situation and development of oil and gas reservoir acid fracturing technology[J].Fault-Block Oil&Gas Field,2009,16(2):95-98.
[5]强彦龙,韩国庆,张庆生,刘晶,王伟燕,杜政学.高酸性气田A1区块水平井提高单井产能技术研究[J].石油钻采工艺,2010,32(增刊):107-108.QIANG Yanlong,HAN Guoqing,ZHANG Qingsheng,LIU Jing,WANG Weiyan,DU Zhengxue.Engineering technology research on improvement of individual well productivity of horizontal well in block A1 in high-acid gas field[J].Oil Drilling&Production Technology,2010,32(S0):107-108.
[6]石俊生,古小红,王木乐,余涛,邹峰梅.普光高含硫气田裸眼水平井投产工艺技术[J].天然气工业,2012,32(1):71-74.SHI Junsheng,GU Xiaohong,WANG Mule,YU Tao,ZOU Fengmei.Techniques and technology of putting horizontal open holes into production in the Puguang Gas Field with high H2S contents[J].Natural Gas Industry,2012,32(1):71-74.
[7]陈爱平,程永红,刘斌,罗君.水平井分段酸压管柱技术研究[J].江汉石油职工大学学报,2010,23(5):21-23.Chen Aiping,Chen Yonghong,Liu Bin,LUO Jun.Survey on segmental acid fracturing string technique of horizontal wells[J].Journal of Jianghan Petroleum University of Staff and Workers,2010,23(5):21-23.
[8]刘猛,董本京,张友义.水平井分段完井技术及完井管柱方案[J].石油矿场机械,2011,40(1):28-32.LIU Meng,DONG Benjing,ZHANG Youyi.Segregated completion technology and completion string for horizontal well[J].Oil Field Equipment,2011,40(1):28-32.
[9]吴晗,吴晓东,张庆生,方越,赵宇新.普光高含硫气井生产管柱合理管径优选[J].石油钻采工艺,2012,40(1):107-108.WU Han,WU Xiaodong,ZHANG Qingsheng,FANG Yue,ZHAO Yuxin.Reasonable diameter selection of production string for Puguang gas well with high H2S[J].Oil Drilling&Production Technology,2012,40(1):107-108.
[10]孔珑.流体力学:Ⅱ[M].北京:高等教育出版社,2003:76-81.KONG Long.Fluid mechanics:Ⅱ[M].Beijing:Higher Education Press,2003:76-81.
[11]谭明文,张应科,钟水清,张绍彬.川东北高温高压深井超深井酸压改造技术研究与应用[J].钻采工艺,2011,34(3):35-40.TAN Mingwen,ZHANG Yingke,ZHONG Shuiqing,ZHANG Shaobin.Research and application acid fracturing technology in HTHP deep and ultra-deep well of northeast Sichuan area[J].Drilling and Production Technology,2011,34(3):35-40.
[12]黄霞,程礼军,李克智,钟水清,朱洪涛.川东北地区碳酸盐岩储层深度酸压技术[J].天然气与石油,2012,30(3):40-43.HUANG Xia,CHENG Lijun,LI Kezhi,ZHONG Shuiqing,ZHU Hongtao.Application of deep acid fracturing technology in Northeastern Sichuan carbonate reservoir[J].Natural Gas and Oil,2012,30(3):40-43.
[13]李根生,盛茂,田守嶒,黄中伟,李元斌,袁学芳.水平井水力喷射分段酸压技术[J].石油勘探与开发,2012,39(1):100-104.LI Gensheng,SHENG Mao,TIAN Shouzeng,HUANG Zhongwei,LI Yuanbin,YUAN Xuefang.Multistage hydraulic jet acid fracturing technique for horizontal wells[J].Petroleum Exploration and Development,2012,39(1):100-104.