摘要
元素录井在国内多个油气田已应用多年,有效地解决了PDC钻头、空气钻井等钻井新工艺所造成的常规岩屑录井分层难题。近年来,随着钻井新工艺在川渝地区的广泛应用,粉末状岩屑导致钻井过程中地层划分困难。通过对川渝地区4口井元素录井获取的资料,建立了曲线趋势法、特征元素比值法、指数法3种地层划分方法,其在川渝地区10口井的应用表明,元素录井分层与测井基本一致,完全满足现场录井要求,解决了该地区钻井新工艺条件下地层划分难题。
Element logging has been used in many domestic oil and gas fields for many years,effectively solved the stratification division problem in conventional cutting logging caused by new drilling technology,such as PDC bit and air drilling.In recent years,with the wide-spread application of new drilling technology in Sichuan-Chongqing region,powdered cuttings have caused difficulties in stratigraphic division during drilling.Based on the data obtained from element logging in 4wells in Sichuan-Chongqing region,three stratification division methods of the curvilinear trend,typical element ratio and index were established.The application in 10 wells in Sichuan-Chongqing region shows that element logging stratigraphic division is basically consistent with well logging,fully meets the requirements of on-site logging,and solves the stratigraphic division problem under the new drilling technology in the region.
出处
《录井工程》
2017年第2期56-61,共6页
Mud Logging Engineering
关键词
川渝地区
元素录井
趋势法
特征元素比值
指数法
地层划分
方法应用
Sichuan-Chongqing region
element logging
trend method
typical element ratio
index method
strati-graphic division
method application
