摘要
水平井技术在给油气田开发带来巨大效益的同时,也给测井等工程技术带来了新的难题。水平井随钻测井和直井电缆测井具有较大差别,不同的测井响应特征对已比较成熟的电缆测井解释方法提出了挑战。在比较了水平井中随钻测井和电缆测井感应电阻率曲线之间的区别后,得出以下结论:两者在储层内部相差较小;在界面处及其附近的响应特征受地层界面表面电荷、钻井液侵入深度大小及井眼与地层夹角大小的影响较大。在测井解释中以电阻率资料为主时,应结合其他测井资料综合分析井眼轨迹与地层界面之间的关系和夹角大小,从而正确地划分储层界面。
The horizontal well technology has brought big benefit for oil and gas field development,but creates a new issue for the logging technology. There is big difference between horizontal well logging while drilling and wireline directional well logging,and different logging response characteristics have become a new challenge for the well-developed wireline well logging interpretation. Through comparison analysis on the induction resistivity curves of two logging methods mentioned above,this paper concludes that there is little difference inside the formation,but at the boundary and the nearby area the former resistivity is larger than the latter due to the significant influence by boundary surface load,the infiltrated depth of drilling fluid,and the angle between borehole and formation. In logging interpretation,it is suggested that apart from the resistivity data as a priority other logging data should be taken into analysis on the relationship between the well track and the formation and the angle sizes so as to clarify the formation boundary.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2009年第6期40-42,共3页
Natural Gas Industry
关键词
水平井
感应测井
响应
特征
井眼轨迹
地层界面
horizontal well,induction logging,response,characteristic,well track,formation boundary
