济阳坳陷下古生界潜山油气藏油水系统划分方法  

Oil and water system division method for lower paleozoic buried hill reservoirs in Jiyang depression

作　　者：马光强[1] 殷文荣 吴文宽[3] 

机构地区：[1]胜利石油管理局地质录井公司 [2]渤海钻探工程公司第一录井公司 [3]大庆钻探工程公司录井二公司

出　　处：《录井工程》2010年第2期43-47,共5页Mud Logging Engineering

摘　　要：济阳坳陷下古生界碳酸盐岩潜山储集层的储集空间主要为次生溶蚀的孔、洞和构造引起的裂缝。构造裂缝的存在,使储集层纵横向连通性难以预测,油水系统的划分成为难题,在一定程度上影响了完井、试油及开发方案的快速有效制定。结合近年来碳酸盐岩潜山储集层的大量勘探实践,开展下古生界潜山油气藏油水系统划分方法研究,发现利用原油性质的纵向变化、储集层物性与含油气丰度的相关性以及水分析的离子类型和矿化度资料可以划分不同油水系统,并通过实例说明该方法具有较好的应用效果。同时指出:在划分油水系统的过程中需注意偶然与系统误差,坚持综合分析的原则,以利于勘探决策的有效运行。建议:碳酸盐岩潜山油气藏采用录井两大系列配套技术:以"岩屑录井+X射线荧光录井+薄片录井"为岩性识别系列,以"综合录井+定量荧光录井+罐顶气录井+核磁录井+离子色谱录井"为含油性识别和评价及保障钻井安全系列,以满足目前勘探生产及地质研究的需要。In Jiyang depression,the pore volume of lower paleozoic carbonate buried hill reservoirs is mainly secondary vugs and caverns,and fractures caused by structures.The existence of structural fractures made it difficult to predict vertical and lateral connectivity of reservoirs,oil and water system division has become a problem,therefore,it influences rapidly and effectively laying out the well completion,oil testing and development plans.Combining with vast amount of exploration practice recent years in carbonate buried hill reservoirs,the study for oil-water system division of lower paleozoic buried hill reservoirs was made,the authors found that using the vertical changes of oil properties,reservoir physical properties,correlatability of petroleum abundance,ionic types and salinity data of water analysis,the different kinds of oil-water systems can be divided.And the examples show that this method has the good applied results.Simultaneously,the authors pointed out that during dividing oil-water systems,accidental errors and systematic errors need to be noticed,we need to stick to the principle of comprehensive analyses in order to benefit effectively running exploration decisions.The suggestions are carbonate buried hill reservoirs carbonate buried hill reservoirs using two series of matching mud logging technique,which takes cutting logging,X ray fluorescence logging and thin section logging as lithology identifying series,comprehensive mud logging,quantitative fluorescence logging,head space gases,nuclear magnetic resonance,ion chromatograph logging as the series for recognizing oil-bearing characteristics and assuring drilling safety,thus fulfilling the needs of the current exploration and production and geological study.

关 键 词：济阳坳陷 碳酸盐岩 构造裂缝 潜山 油气藏 油水系统 识别 含油丰度 

分 类 号：TE[石油与天然气工程]