塔河油田套管损坏的预测软件研究.pdf

石油机械
2013年第41卷第6期
CHINA PETROLEUM MACHINERY
钻井技术与装备
塔河油田套管损坏的预测软件研究
张建军刘榧易先中2万文妮吉源强刘利军2
(1.中国石化西北油田分公司2.长江大学机椃工程学院)
摘要:在深抽采油工艺中,液位下降和地应力的交互作用是引起套管损坏的主要因素。基于
VB/ Access开发了针对塔河油田六、七区套管损坏预测的一套应用软件。该軟件将套管损坏与开
采参数相联系,通过控制开采参数避免套损的发生。由于抽油机冲程、冲次等参数影响着液位高
度,所以可计算套管开始损坏和井壁开始剥落的临界液位,由此临界液位来调节采油参数。通过
比较套管损坏的理论位置与实际位置,由具体的油井结构验证套损的影响因素,再由已知油井数
据对软件进行校正,最后结合实际情況,对不同工况下在役套管的工作状态进行预测和分析。
关键词:套管损坏;深扣;临界液位;软件开发;VB/Aces;:预测
中图分类号:TE925文献标识码:Adoi:10.3969/.isn.1001-4578.2013.06.008
Research on Prediction Software for Casing Damage in Tahe Oilfield
Zhang Jianjun Liu Feiyi Xianzhong Wan Wenni Ji Yuanqiang Liu Lijun
(. Petrochina Northwest il field Company 2. College of Mechanical Engineering, Yangte Unirersity
Abstract: Liquid level decrease and ground stress interaction are the main factors which lead to casing damage
in oil pumping in deep wells. A set of software was developed with regard to the casing damage in Liuqi Zone of
Tahe Oilfield on the basis of VB/Access. The software connects casing damage with production parameters to pre
vent casing damage from taking place by controlling production parameters. Due to the fact that the parameters such
as the stroke and pumping speed of pumping unit affect the height of liquid level, the critical liquid level of initial
casing damage and well wall flaking can be calculated. Then, the critical liquid level is used to regulate oil produc
tion parameters. The influencing factors of casing damage are verified comparing the theoretical and practical posi
tions of casing damage and referring to the specifie oil well structure. Then, the software is verified according to the
given oil well data. Finally, the prediction and analysis of the operating state of casing in service under different op-
erating conditions can be carried out
Key words: casing damage; deep pumping technology; critical liquid level; software development: VB/
Access; prediction
普台区块以外的其余6个区块。截至2010年,这
0引言
6个区块的套损井共有23口,套损共计发生26
次,占整个采油二厂的5.2%。
塔河油田采油二厂目前有生产井440日,主要
上述数据说明套损似乎并不严重,但是呈现逐
分布在六区、七区、八区、十区、十ー区、十二区年增加的趋势,因此有必要对其进行研究。目前对
和托普台等7个开发区块。套损井主要出现在除托套管损坏预测的研究方法主要有实測法、解析法及
基金项目:国家自然科学基金委员会-中国石油天然气集团公司石油化工联合基金资助項目“钻柱托压效应的振动释放机理与特征
(U1262108);国家自然科学基金项目(5174035、50974023、50874019);国家科技重大专项“复杂结构井优化设计与控制关键技术”
20112X05009-005);:国土资源部深部地质钴探技术重点实验室开放课题“超万米深井全金属螺杆马达的基础研究”(NLSD201215)