摘要
虽然气测录井在气层识别方面具有明显的优势,但对于非均质性极强、岩性致密且以甲烷为主的苏里格气田而言,利用常规气测解释方法识别气层相对困难,更无法识别储集层是否含水。针对此问题,以长庆苏里格气田主要目的层——石盒子组盒8段和山西组山1段为例,在对近70口探井相应储集层的气测、岩心分析等相关数据进行统计对比并结合试气结果综合分析的基础上,探讨了利用气测全烃曲线形态与岩心分析数据反映储集层物性的关系;给出了用于储集层含气、含水性识别的气测曲线形态与储集层物性的5种组合判别模式,应用组合模式判别,结合岩心分析氯盐含量以及异常显示厚度与储集层之间的关系,可实现储集层含气、含水性的有效识别。应用实例表明,5种组合模式几乎涵盖了苏里格气田所有储集层的识别需求,其中组合模式1和组合模式3可称之为该气田识别储集层是否含水的最有效方法。
Although gas logging has the obvious advantages in gas layer identification,but as far as Sulige gas field is concerned,which is of highly heterogeneous,tight lithology and dominant methane,it is relatively difficult to use the conventional gas logging interpretation methods to identify gas layers,and it is no way to recognize whether reservoirs bear water or not. For this reason,taking the targets zones of He 8 Section of Shihezi formation and Shan 1 Section of Shanxi formation in Changqing Sulige gas field as examples,based on carrying out statistic correlation of the corresponding reservoirs'data in gas logging and core analysis for nearly 70 exploration wells and combining comprehensive analysis of gas test results,the authors discussed using gas logging total hydrocarbon curve shapes and core data to reflect reservoir physical properties,gave 5 discriminant models which combined gas logging curve shapes with reservoir physical properties to identify reservoir water bearing properties and gas bearing properties. Using 5 modes of discrimination,and combining the relations between chloride content of core analysis and abnormal display thickness and reservoirs,reservoir gas and water bearing properties could be effectively identified. The applied examples indicated that 5 combination modes almost cover all the reservoir identification for Sulige gas field,among which combination modes 1 and 3 are the most effective way to identify reservoirs bearing water or not in Sulige gas field.
出处
《录井工程》
2010年第1期29-34,共6页
Mud Logging Engineering
关键词
储集层
含水
含气
识别
气测
曲线形态
电测
物性
组合模式
reservoir,gas bearing,water bearing,identification,gas logging,curve shape,electrical logging,physical property,combination mode
