摘要
目的：探讨中原油田油水井套管损坏的有效防治途径。方法：对中原油田油水井套管损坏状况进行统计、归类，并对形成套管损坏的因素和损坏的机理进行分析、理论计算和室内实验。套管损坏的成因分为盐膏层蠕变、不恰当的射孔密度、注入水水窜诱发泥岩膨胀和少数断层复活、套管管柱设计不合理、油田高压注水及地层高矿化度水腐蚀等，并对上述因素作了分析。结果：油水井套管损坏是多种因素综合作用的结果，但对某一油水井套管损坏，有一种因素起主导作用。钻井时合理设计套管管柱，搞好油田注水和防腐，油水井增产增注措施的科学设计与施工是预防套管损坏的主要内容。结论：科学开发油田，积极预防油水井套管损坏至关重要；对已破损套管研究科学实用的修复方法是改善油田开发效果的重要措施。
Purpose Discuss the effective preventive method of casing damage in oil-water well.Method The damage condition of casing in oil-water well in Zhongyuan Oilfield have been made statistical and classified. The damage factor of casing and damage mechanism has been made analysis theoretical calculation and laboratory experiment. The genesis of casing damage should be divided a creep deformation of salt lime zone, unreasonable perforation density, shale swelling and a few of fault recurrence formed by injection water channeling,unreasonable of design casing string, high pressure injection and water corrosion of high formation water salinity and so on. Such factors have been analyzed. Result The casing damage of oil-water well resulted from the comprehensive action with multi-factor, but one of them has a important part in the certain casing damage of oil-water well. The main task of preventive casing damage is designing casing string reasonably while drilling, doing well in injection water and preventive corrosion; scientific designing and operation in well stimulation and stimulation of injection of oil-water well. Conclusion It is a important measure of improving developing effect to stuby casing damage and have practical repairing technology scientifically.
出处
《断块油气田》
CAS
1998年第5期49-53,共5页
Fault-Block Oil & Gas Field
关键词
油水井
套管
腐蚀
防治
油田
Casing, Injury, Machanism, Technique, Zhongyuan Oilfield
