2017年2月第36卷第1期
大庆石油地质与开发
Petroleum Geology and Oilfield Development in Daqing
DOI:10.3969/J.ISSN.1000-3754.2017.01.018
高含硫环空带压井液面监测技术
耿安然
（中原油田分公司石油工程技术研究院，河南濮阳457001）
Feb.，2017 Vel. 36 No. 1
摘要：普光气田高含硫化氢、二氧化碳，腐蚀环境恶劣，对井筒完整性技术要求高。气井主要采用“井下安全
阀+循环滑套+永久式封隔器+坐落短节”
一体化高抗硫材质管柱，永久式油套环空加注保护液确保井筒完整性。
在生产过程中部分井环空带压套压达到35MPa，
且环空中渗漏有H,S，严重影响井简安全，需准确测取环空液
面，以便及时补充加注环空保护液。现有国产之
气液界面监测仪材质不抗硫化氢、仪器整体耐压低、变通径声波
衰减快、测试精度差，同时也缺乏配套的测试二
无法探测带压井环空液面。针对这一难题，研制了高抗
H,S、耐压40MPa的高精度液面测试仪，
，配套形成了高含硫环空带压井液面监测工艺，成功应用于普光多口高
含硫环空带压并液面监测，并拓展解决了小并眼
抽油井环空液面无法准确测取的难题，
（套管直径10.16cm）
为高含硫气井环空保护液加注和小井眼抽油并合理工作制度制定提供了依据。
词：液面监测仪；硫化氢；环空保护液
关键
中图分类号：TE353.4
文献标识码：A
文章编号：1000-3754（2017）01-0100-04
MONITORINGTECHNIQUEOFTHELIQUIDLEVELFORTHEWELL
WITHHIGHSULFURANDHIGHPRESSUREINTHEANNULUS
GENG Anran
(Petroleum Engineering Technique Institute of Zhongyuan Oilfield Company, Puyang 457001,China)
Abstract: Puguang Gasfield is characterized by high hydrogen sulfide and middle carbon dioxide, because of the saea high. The completeness of the gas well is ensured mainly by the integrated pipe string with high-anti sulfide material quality, permanent string-casing annulus injected by the protecting liquid, the former is composed of downhole safety valve, circling sliding sleeve, pemanent packer and seating pup joint. In the process of the production, the casing presure of the partial annulus can reach 35 MPa, and moreover H,S is leaked in the annulus, thus the borehole safety is seriously influenced, so it is needed to accurately measure the annular liquid level so as to add the protecting liquid in time. At present, the home-made gas-liquid level monitoring instrument cannot resist hydro-gen sulfide, the complete pressure resistance of the instrument is rather lower, the sonic attenuation of the alterna-tive path logging unit is rather fast, the test precision is rather lower, and furthermore the matched testing technolo gy is absent, so the liquid level cannot be measured for the wells with high pressure. In the light of the problems stated above, the high-precision liquid-level testing instrument with high H,S resistance and 40 MPa pressure re-
收稿日期：2016-03-08
改回日期：2016-05-20
基金项目：中石化天然气项目部2012先导试验项目（2012XD012)。作者简介：耿安然，男，1983年生，工程师，从事试井技术研究。
E-mail;ranangeng126.com
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