迪那2气田井筒堵塞物来源分析及解堵方法
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摘要
针对迪那2气田井筒堵塞问题,根据井口异物、生产管柱堵塞物化学成分,认为井筒堵塞物主要来源有3种,分别为地层砂、一定环境下结晶的碳酸盐垢和有机物。总结油管穿孔、连续油管疏通管柱、更换管柱并清理井筒的已有解堵措施经验,结合迪那2气田单井打开厚度大、非全通径管柱为主、井筒遇阻位置距离射孔底界较远的实际情况,分析化学解堵如酸化井筒解堵的可行性,认为迪那2气田目前阶段合适的解堵方法为酸化井筒化学解堵。
In the view of the well bore blockage issue in Dina-2 gas field,according to the chemical composition of well head foreign matter and well bore blockage,it was considered that the well bore blockage had three sources which were formation sand,crystal of carbonate scale under certain environment and organic matter. This paper summarized the unplugging measures experience of tubing perforation,plugging removal of coiled tubing,and replacement of pipe column and cleaning pitshaft.According to the actual situation of long opening thickness,non-full diameter pipe column,far distance between well bore block site and perforation bottom,this paper analyzed the feasibility of chemical solution such as plugging removal of acidization;it is considered that the acidization is a better solution at present.
In the view of the well bore blockage issue in Dina-2 gas field,according to the chemical composition of well head foreign matter and well bore blockage,it was considered that the well bore blockage had three sources which were formation sand,crystal of carbonate scale under certain environment and organic matter. This paper summarized the unplugging measures experience of tubing perforation,plugging removal of coiled tubing,and replacement of pipe column and cleaning pitshaft.According to the actual situation of long opening thickness,non-full diameter pipe column,far distance between well bore block site and perforation bottom,this paper analyzed the feasibility of chemical solution such as plugging removal of acidization;it is considered that the acidization is a better solution at present.
引文
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[3]杨涛,杨桦.关于CO2对储层伤害及对策的研究与应用[J].钻采工艺,2014,37(5):101-103.
[4]孙海虹,王蓉莎,卢燕.油气田结垢预测技术与应用研究[J].断块油气田,2013,6(4):64-66.
[5]蒲洪江,伍强,杨永华,等. 8 000 m连续油管在超深高含硫气井的应用与实践[J].钻采工艺,2015,38(2):111-113.
[6]周静,范小松,戚杰.解除气井有机沉积物堵塞用的解堵剂JD-3[J].油田化学,2002,19(4):309-339.
[7]沈长寿,唐永帆,罗迎冰.磨溪气田雷一1气藏油管堵塞物清除工艺技术研究[J].石油与天然气化工,2001,30(6):310-312.
[8]陈单平.新场气田气井常见堵塞及防治措施[J].天然气工业,2005,25(3):138-140.
[9]白海涛,王新强,吕乃欣,等.榆林某污水回注井堵塞原因分析[J].石油与天然气化工,2011,40(6):636-645.
[10]刘争芬,常辉,罗满岐.大牛地气田气井油管钻铣除垢技术应用[J].石油化工应用,2015,34(1):122-125.
[11]孙莉,江元汝,许启明.坪桥油田采油管道结垢机理与防治措施[J].腐蚀科学与防护技术,2008,20(3):232-234.
[12]王晓云,姚拉拉,刘瑛,等.几种阻垢剂对硫酸钙垢的抑制作用[J].工业水处理,2012,32(10):72-74.
[13]尚万宁,刘建民,李柏鹏,等.气井井筒结垢机理及除垢技术研究[J].石油化工应用,2016,35(5):84-90.
[14]周厚安,冷雨潇,刘友权,等.高温气田水新型阻垢剂的研究与应用[J].石油与天然气化工,2017,46(1):57-62.
[15]蒋文学,万向辉,金娜.一种气井井筒用新型中性清防垢剂的研究与应用[J].石油与天然气化工,2017,46(3):56-60.
[16]朱明喜,王国昌,张房,等.普光气田井筒解堵工艺技术改进方法[J].石油矿场机械,2013,42(6):44-47.