海上油井清防蜡技术分析

Analysis of paraffin removal and control techniques in offshore oil wells

海上油田采油受平台空间、开采周期和开发成本限制,一些在陆上油田应用效果较好的清防蜡技术并不适用于海上油田。为了给海上油田清防蜡方案制定和技术优选提供参考,通过对油井结蜡机理、结蜡过程和结蜡影响因素进行分析,结合清防蜡技术在海上油田的应用情况,对海上主要清防蜡技术的原理和适用性进行分析,指出海上油田应以延长清蜡周期、降低工作强度、提高经济效益为目的,遵循“以防为主、清防结合”的原则,组合运用各种清防蜡工艺开展清防蜡作业,从而达到提高清防蜡措施作业效率和保障海上油田正常生产的目的。

Oil production in offshore oilfield is limited by platform space:production cycle and development cost.Some paraffin removal and prevention techniques which have good application effect in onshore oilfield are not suitable for offshore oilfield.In order to provide a reference for the formulation of paraffin removal and prevention scheme and technical optimization in offshore oilfield:through the analysis of paraffin deposition mechanism:deposition process and influencing factors:combined with the application of paraffin removal and prevention techniques in offshore oilfield:the principle and applicability of main offshore paraffin removal and prevention techniques are analyzed.It is pointed out that the paraffin removal and prevention work in offshore oilfields should follow the principle of"prevention first:prevention and removal combined":with the purpose of prolonging the paraffin removal cycle:reducing the work intensity and improving the economic benefits:combining various paraffin removal and prevention processes to improve the operation efficiency of paraffin removal and control measures,and ensure the normal production of offshore oilfields.