林阳
LIN Yang

• 1:大庆油田有限责任公司第二采油厂

摘要(Abstract)：

南二西套损区近8年以来受嫩二段泥岩浸水影响,发生成片套损,地层压力下降较快,压力系统失衡。为了改善压力系统失衡现状,结合区块开发实际,根据细化区块的地质风险等级和开发预警指标界限,通过减少顶破裂压力注水井数、控制地层压力、控制水驱注采比等措施,使套损区注采比由0. 80恢复到0. 98,地层能量得到有效恢复,注采失衡井数逐步减少,压力系统保持稳定,为南二西套损区综合治理奠定了基础。该调整思路及措施对其他套损区块压力系统稳定恢复具有一定的指导意义。
Casing damaged area in Block South-West Ⅱ has been always influenced by the water-invaded mudstone in Member Nen-2 in recent 8 years,and more seriously a block of the damage has occurred,the formation pressure drops rapidly and the pressure system has been out of balance. In order to improve the current situation of the pressure system imbalance,combined with the actual development of the block and moreover according to the geological risk level and the index limit of the development precaution of the finely divided block,with the help of the following measures: reducing the water injector number near to the breakdown pressure,controlling the formation pressure and waterflooding injection-production ratio etc.,the ratio was recovered from 0. 80 to 0. 98,the formation energy was effectively restored,the number of injection-production imbalance well was gradually reduced,the pressure system was remained stably,therefore the foundation was laid for the comprehensive management of the casing damaged area in Block South-West Ⅱ. The adjusting thinking and measures possess a certain guiding significance for the stable recovery of the pressure system in other casing damaged areas.

关键词(KeyWords)： 南二西套损区;嫩二段;压力系统;注采参数
South-West Ⅱcasing damaged area;Member Nen-2;pressure system;injection-production parameter

Abstract:

Keywords:

基金项目(Foundation): 大庆油田有限责任公司科技攻关项目“萨南开发区南二、三区西部构造复杂区注采适应性评价及调整潜力研究”

作者(Author): 林阳
LIN Yang

DOI: 10.19597/J.ISSN.1000-3754.201803051

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