| PDC钻头钻井时的地质分层方法 |
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| 引用本文： | 高德利,张辉,王家祥.PDC钻头钻井时的地质分层方法[J].中国石油大学学报(自然科学版),1998(1). |
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| 作者姓名： | 高德利 张辉 王家祥 |
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| 作者单位： | 石油大学石油工程系，中国海洋石油渤海公司 |
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| 基金项目： | 中国海洋石油总公司渤海石油公司“PDC钻头在地层分层方面的研究”项目 |
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| 摘 要： | 使用ＰＤＣ钻头钻井时，岩屑破碎得很细，通过岩屑录井来判断地层岩性十分困难。对ＰＤＣ钻头切削刃进行了受力平衡分析，建立了地层识别因子与钻井操作参数、钻头结构参数的关系模型。根据已钻井的录井、测井、地质资料提取地层变化规律，利用随钻录井数据预测了地层岩性。编制了相应的地质分层软件，并进行了实例预测。预测结果与测井解释结果比较，符合率为６５％～７０％，说明该预测方法具有一定的有效性和实用性。
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| 关 键 词： | PDC钻头 地层 岩性识别 预测 |
A METHOD OF FORMATION CLASSIFICATION WHILE DRILLING WITH PDC BITS |
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| Gao Deli,Zhang Hui,Wang Jiaxiang.A METHOD OF FORMATION CLASSIFICATION WHILE DRILLING WITH PDC BITS[J].Journal of China University of Petroleum,1998(1). |
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| Authors: | Gao Deli Zhang Hui Wang Jiaxiang |
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| Abstract: | Because of fine cuttings while drilling with PDC bits,it is difficult to identify the lithology changes by the way of lithology logging. The balance of forces acting on PDC bit cutter is analyzed,and a model of relations among the formation identification factor and the operational parameters of drilling as well as the bit structural parameters is established.This model can be used to obtain the rules of formation from the data of well logging,production testing and geological information, and also be used to predict formation lithology in combination with MWD data.Application shows that this model is efficient and feasible. |
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| Keywords: | PDC bit formation lithology identification prediction |
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