尼日尔三角洲A区块异常高压层钻进对策  

Drilling countermeasures for abnormal high pressure formation of A block in Niger delta

作　　者：沈国敏[1] 赵增新[1] 赵群[1] 樊子华[2] 贾正旭[3] 徐严芬[3] 

机构地区：[1]中国石化国际石油勘探开发有限公司,北京100083 [2]中国石化河南油田分公司石油工程技术研究院 [3]中国石化河南油田分公司第一采油厂

出　　处：《石油地质与工程》2012年第2期87-89,8-9,共3页Petroleum Geology and Engineering

摘　　要：尼日尔三角洲异常高压层的存在严重影响钻井作业的安全进行,特殊的地质条件造成的喷漏同层给压井作业带来了极大挑战。探讨了该区异常高压形成的原因和机理,并在总结A区块各种实钻资料的基础上,对该区块地层压力进行了预测。利用所获得的压力预测方程并结合钻进过程中的随钻测井资料,可以实时预测地层压力,以便于及时发现异常高压层。对A区块钻遇异常高压层的实例进行了分析,并提出了安全钻进措施。The abnormal high pressure formation in Niger delta severely affected safe drilling operation.The special geological condition that the lost circulation point and over flow formation exist in the same section has brought big challenges for kill well operation.The reason and mechanism for the formation of abnormal high pressure in Niger delta was discussed and the pressure prediction model was presented based on actual drilling and logging data of completed wells in A block.The real time pressure during drilling can be predicted by adopting the prediction model combined with the real time drilling and logging data to detect the abnormal high pressure timely.A case for actual drilling abnormal high pressure in A block was analyzed,detailed and countermeasure for drilling abnormal high pressure formation was suggested.

关 键 词：尼日尔三角洲 异常高压 压力预测 实例分析 

分 类 号：TE242[石油与天然气工程—油气井工程]