元坝高含硫气井环空起压诊断评价方法及应用

发布时间：2018-01-14 06:33

本文关键词：元坝高含硫气井环空起压诊断评价方法及应用　出处：《钻采工艺》2016年06期 　论文类型：期刊论文

【摘要】：气井生产过程中,环空带压现象逐渐增多,特别是含硫化氢气井,已成为影响安全生产的潜在风险,文章针对元坝高舍硫气井特点,参照API.RP90及B-Btest,提出了开井初期环空起压快速诊断流程及放压漏点判断流程,建立了套压增量预测图版,提出了在50~70×10~4 m~3/d的产量下,环空压力上涨在15~20 MPa的规律;并对API.RP90计算最大环空允许压力方法进行了修正,建立了多因素影响下的最大环空允许压力计算方法及五步环空日常维护管理方法,现场应用验证了该方法可确保高含硫气井的长期安全生产。
[Abstract]:In the process of gas well production, the phenomenon of annular zone pressure is increasing gradually, especially the hydrogen sulfide gas well, which has become a potential risk to affect the safety of production. This paper aims at the characteristics of Yuan dam Gao she sulfur gas well. Referring to API.RP90 and B-Btest, the rapid diagnosis flow of annular pressure in the initial stage of well opening and the flow of judging pressure release leakage point are put forward, and the prediction chart of casing pressure increment is established. Under the yield of 50 ~ 70 脳 10 ~ (4) m ~ (-1) m ~ (3 / d), the annulus pressure increases at 1520 MPa. The method of calculating the maximum allowable pressure of ring air by API.RP90 is modified, and the method of calculating maximum allowable pressure of ring air under the influence of many factors and the method of daily maintenance and management of five-step ring air are established. Field application shows that this method can ensure long-term safe production of high-sulfur gas wells.
【作者单位】：中国石化西南油气分公司工程技术研究院;中国石化西南油气分公司川东北采气厂;
【基金】：中国石化科技部项目“元坝超深高含硫气藏开发关键技术研究”部分内容(项目编号:P13056)
【分类号】：TE38
【正文快照】： 根据2004年《美国矿产管理局调查》报告,墨API.RP90《海上油气井套管环空带压管理》,环空起西哥湾的OCS地区大约15 500口生产井、关闭井及压类型诊断采用B-B test,但API RP90及B-B test废弃井中,8 122口井环空带压,有约47.1%气井油缺乏针对性及实效性。套环空起压,16.3%技术

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