鄂尔多斯盆地油水层轻烃录井解释评价方法  

Interpretation and evaluation methods for oil and water layers of light hydrocarbon logging in Ordos Basin.

作　　者：赵宏波[1] 刘小宁[1] 梁院科[1] 周鹏飞[1] 王洪君[1] 

机构地区：[1]长庆油田分公司第五采油厂

出　　处：《录井工程》2012年第4期31-35,81,共5页Mud Logging Engineering

摘　　要：轻烃录井作为录井技术系列之一,随着应用实践范围的逐步扩展和研究程度的深入,该项技术越来越受到石油勘探开发甲乙方的重视,而如何有效提高其解释评价符合率已成为人们关注的焦点。长庆油田自2006年应用轻烃录井技术以来,通过不断实践摸索与研究,优选确定了适合鄂尔多斯盆地不同储集层定性评价的特征参数和油层、油水同层及水层的谱图特征;在此基础上,通过水溶指数(Bz/CYC6)和降解指数(nC7/MCYC6)的分析,结合多口井不同储集层试油结论的统计对比,形成了用两指数交会进行储集层轻烃录井定量解释评价的图板。实例分析表明,定性、定量解释结果准确、可靠,效果较好。As one of the series of mud logging technology, and with the gradual expansion of the scope of application practice and research,the light hydrocarbon logging technology is paid more and more attention by petroleum exploration and development parties A and B.How to effectively improve the rate of its interpretation and evaluation has become the focus of attention.Since the application of light hydrocarbon logging technology in 2006, through constant practice,exploration and research,Changqing Oilfield preferably determined the characteristic parameters and spectrum characteristics of oil layers,oil-water layers and water layers which were suitable for the qualitative evaluation for different reservoirs in Ordos Basin. On this basis, through the analyses for water-soluble index (Bz/CYC6)and degradation index (nC7/MCYC6) and combining with the statistics and comparison of oil test conclusions from different reservoirs in multiple wells,the plot plate was formed with the two indices’intersection to carry out logging quantitative interpretation and evaluation for reservoir light hydrocarbon. The real examples showed that the results of the qualitative and quantitative interpretation were accurate and reliable.

关 键 词：轻烃录井 特征参数 谱图特征 水溶指数(Bz CYC6) 降解指数(nC7 MCYC6) 解释图板 

分 类 号：TE132.4[石油与天然气工程—油气勘探]