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)06081304
DOI: 10.13639/j.odpt.2016.06.020
Vol. 38 No. 6 Nov.2016
东方1-1气田高温高压下封隔液抗CO，腐蚀研究
王尔钧魏安超】舒福昌”向兴金？胡伊旭”
1.中海石油（中国)有限公司湛江分公司；2.湖北汉科断技术股份有限公司研究所
引用格式：王尔钧，貌安超，舒福昌，向兴金，胡伊旭.东方1-1气田高温高压下封隔液抗CO，离蚀研究[J].石油钻采工艺， 2016,38(6): 813-816.
摘要：东方1-1气田中深层属于高温高压气藏且天然气中CO2含量较高，在究并作业过程中需要加入封隔液以保持油管与套管间的液柱静压力，同时还要防止CO，气体审漏而进入环空，加剧对油管、套管的离蚀。为了确保井简的长期安全，开展了在模拟东方1-1气田离蚀环境下，不同盐水对隔液体系对13Cr和13CrS两种油管材质的离蚀程度研究。结累表明：高温高
13Cr的离蚀程度明显小于甲酸盐封隔液，对13CrS扇蚀更小，其肩蚀建率均小于0.076mm/a，可以满足并简的长期安全要求，具有进一步推广价值。
关键词：封隔液；甲酸盐；复合盐水；腐蚀；缓蚀剂
中图分类号：TE985.6
文献标识码：A
Study on CO, corrosion resistance of packer fluid under high pressure and high temperature in
Dongfang 1-1 Gasfield
WANGErjun',WEIAnchao',SHU Fuchang’,XIANG Xingjin",HU Yixu 1. CVOOC China Limited Zhanjiang Branch, Zhanjiang 524057, Guangdong, China
2. Hanke New Technology Research Institute, Hubei Hanke New Technology Co. Lad., Jinzhou 434000, Hrbei, Chind
Citation: WANG Erjun, WEI Anchao, SHU Fuchang, XIANG Xingjin, HU Yixu. Study on CO, corrosion resistance of packer fluid under high pressure and high temperature in Dongfang 1-1 Gasfield [ J] . Oil Drilling & Production Technology, 2016, 38(6): 813-816
Abstraet: In Dongfang 1-1 Gas Field, the gas reservoirs in the middle and deep strata are of high temperature and high pressure with higher CO, content. In the process of well completion, therefore, it is necessary to add packer fluid to keep the hydrostatic pres sure between the tubing and the casing. And furthermore, it is necessary to prevent CO, from channeling and leaking into the annulus as it may aggravate the corrosion of tubing and casing. In order to guarantee the wellbore safety for a long term, the corrosion degree of two pipe materials (13Cr and 13CrS) by different saline packer fluid systems was studied in the simulated corrosion environment of e s ee a ssard eaa e ea an e s se e seriously and even leaked easily by the formate packer fluid (density 1.46 g/cm). Compared with the formate packer fluid, the packer fluid containing HLTC composite saline has much lower corrosion degree, and its corrosion effect on 13CrS is much less with corrosion rate lower than 0.076 mm/a. Therefore, it could meet the requirements of long-term wellbore safety and should be popularized further.
Key words: packer fluid; formate; composite saline; corrosion; anti-corrosive agent
基金项目：中海石油（中国）有限公司炼合性科研项目“东方13-1气田高温高压钻完并关键技术研究"（端号：CNOOC-KJ125ZDXM1
2LTD)。
第一作者：主尔销（1967-),1985年率业于江汉石油学统，现从事油气井制试和完弃工作。通试地址：（524057）广东省湛江市坡头区22
号信箱。电话：0759-3909905。E-mail:wangerj@cnooc.com.cn
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