第38参第6期 2016年11月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2016)060776-06
DOI: 10.13639/j.odpt.2016.06.012
东方13-1高温高压气田全寿命多级屏障
井筒完整性设计李炎军张万栋杨仲涵张超
李文招
中海石油（中国)有限公司港江分公司
Vol. 38 No. 6 Nov.2016
引用格式：李炎军，张万栋，橘仲涵，张超，李文拓.东方13-1高温高压气田全寿令多级屏障并筒完整性设计[J］.石油钻采工艺,2016,38(6)：776-781
摘要：东方13-1气田日的层温度高达141℃，压力系数1.90~1.94g/cm，天然气中CO，含量14.63%~50.04%，属高温高压高含CO，天然气藏，实际开发中极易造成图并审赠、油套管强度下降及肩蚀失效，给井简安全造成隐惠。为此设计采用了具有防漏、防审、防离蚀、防应变、防温变功能的“5防”树脂水泥浆体系及油气响应型自修复水泥浆体系，实现全并段水泥对图；并提出了“管树脂水泥浆十尾管项部时隔器十回接插入密时十回接管柱顶部对隔器十自修复水泥固井+树脂水泥固井”六级屏障设计技术，形成多级屏障的安全系统。现场应用结表明，东方13-1气图各生产并0177.8mm尾管及回接段固并质量优良，而且从投产至今，各生产并井口压力监测均未发现有环空带压问题。该套技术可以有效对固高温高压高含CO产层，保障从钻完井至后期开发生产整个周期过程中的井简完整性，降低了环空带压风险。
关键词：东方13-1；高温高压；CO2；五防水泥浆；自修复水泥浆；六级屏障
中图分类号：TE256
文献标识码：A
Design of life-cycle multi-barrier wellbore integrity in Dongfang 13-1 HTHP Gas Field
LI Yanjun, ZHANG Wandong, YANG Zhonghan, ZHANG Chao, LI Wentuo CNOOC China Limited Zhanjiang Branch, Zhanjiang 524057, Garangdong, Chind
Citation: LI Yanjun, ZHANG Wandong, YANG Zhonghan, ZHANG Chao, LI Wentuo. Design of life-cycle multi-barrier wellborc integrity in Dongfang 13-1 HTHP Gas Field [ J ] . Oil Drlling & Production Technology, 2016, 38(6): 776-781.
ssd ( e e e s e e ae (pressure coefficient 1.90-1.94 g/cm’) and high CO, content (14.63%-50.04%). When it is actually developed, cementing channeling, tubing and casing strength decline and corrosion occur easily, so the wellbore safety suffers from potential danger. To solve this problem, the "five-control" (lost circulation control, channeling control, corrosion control, strain control and temperature change control) aquc-ous resin drilling fluid system and the petroleum/gas-response self-repairing aqueous drilling fluid system were designed, depending on which, the whole wellbore cementing was realized. Besides that, six-level barrier design technology (aqucous resin drilling fluid at liner + packer at the top of liner + tieback inserted sealing + packer at the top of tieback string + self-repairing cementing + resin cementing) was proposed to provide multi-barrier safety system. Field application results show that the cementing qualities of O177.8 mm liner and tieback sections in all production wells in Dongfang 13-1 Gas Field are satisfied. Since they were put into production, no annulus pres sure has been recorded in any production well when wellhead pressure is monitored. By virtue of this technology, HTHP pay zones with high CO, content are cemented effectively, the wellbore integrity from drilling and completion through the whole process of develop ment and production is guaranteed and the risk of annulus pressure is mitigated.
Key words: Dongfang 13-1; high temperature and high pressure; CO,; five-control aqueous drilling fluid; self-repairing aqueous drilling fluid; six-level barrier
第一作者：李炎军（1980-)高级工程师，2003年毕业于西安石油大学，现从事海洋石油钻并管理工作。通试地址：(524057)广东省湛江
事坡头区22号信猫。电话；0759-3909685。E-mail: liyanjun@cnooc.com.cr
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