利用钻井参数进行随钻岩性预测  

LITHOLOGY PREDICTION WHILE DRILLING BY USE OF DRILLING PARAMETERS

作　　者：曹正林[1] 周丽清[1] 王志章[1] 张祥忠 

机构地区：[1]石油大学油藏描述与预测研究所

出　　处：《天然气工业》2000年第1期48-50,共3页Natural Gas Industry

基　　金：中国石油天然气集团公司"九五"重点攻关课题<塔里木盆地深井复杂条件录井新技术研究>项目

摘　　要：各钻井参数与岩性有直接或间接的关系，直接利用钻井参数进行岩性预测，可以帮助我们在钻进过程中随时了解地下岩性情况，便于录井岩性的校正和对比。我们选用了塔中、塔北的数十口井钻速、钻压、转速、扭矩、泵压等５ 种参数进行岩性预测。具体做法是：用其它４ 种参数对钻速参数进行校正，然后建立钻速参数倒数与岩性间的关系，并以此进行岩性预测。预测结果与实际录井岩性相比，效果较好，符合率可达８０％ 左右。There is a direct or indirect relation between drilling parameters and lithology.Directly using drilling parameters to predict lithology can help us to understand the information on underground lithology at all times in the process of drilling and is convenient to correct and compare the log lithology.The five parameters (drilling speed,weight on bit,rotary speed,moment of torsion and pumping pressure) from tens wells in the central and northern parts of Talimu basin were selected for lithology prediction.The concrete way of doing is as follows:The drilling speed parameters are first corrected with the other four parameters and then the relation between the reciprocal of drilling speed parameters and lithology is set up,and in this way,the lithology prediction is conducted.As compared with the log lithology,the prediction result is better and the coincidence rate can reach about 80%.

关 键 词：钻井参数 岩性识别 随钻测量 油气田 

分 类 号：TE21[石油与天然气工程—油气井工程]