碳酸盐岩快速地层固井质量评价方法研究  

Cement Bond Log Evaluation Method in Fast Carbonate Formations

作　　者：王连起 

机构地区：[1]中石化西北分公司工程技术研究院测井研究所,新疆乌鲁木齐830011

出　　处：《测井技术》2005年第2期153-155,共3页Well Logging Technology

摘　　要：在碳酸盐地层固井质量评价中,由于地层波超前于套管波造成了与CBL测量方法原理上的变异,因而不能真实对固井质量进行评价。地层波超前于套管波不仅与地层速度有关,而且在超前的时间和幅度上与环空介质有直接的关系,但变密度(VDL)曲线恰恰可以反映这一特征。利用VDL 曲线可以对固井质量进行有效地评价。具体实例验证了其可行性和有效性。In cement bond quality evaluation in fast c ar bonate formation, there is something different in CBL logging method and princip le of the evaluation since the formation wave is faster than casing wave, so it is hard to evaluate the cement bond quality. The reason that formation wave trav els ahead of the casing wave is, first it's related to the formation velocity, a nd second its previous time and amplitude are related to the annulus media. But all these characters can be shown in VDL curves. Thereby, cement bond qualit y can be effectively evaluated by using VDL curves, the feasibility of which is proved with log examples.

关 键 词：碳酸盐岩 快速地层 固井质量 变密度测井 声波幅度测井 

分 类 号：P588.245[天文地球—岩石学] TE256[天文地球—地质学]