Improving the plugging ability of drilling fluid is an effective way to solve the instability of the wellbore in complex formations.Low porosity,low permeability and micro nano scale fracture develope
本文以张家口大境门城墙为背景,通过对离道路最近的大境门城墙上的振动测试,得到了测试路段汽车通过时的城墙振动数据,并对交通情况做了详细统计,最后分析数据,得出交通振动对大境门城墙的影响情况.研究表明:大境门古城墙旁有大量小型汽车持续经过,大型车辆平均每分钟也会有一辆经过;小型车辆经过时大境门古城墙只有较小且平稳的振动,只有大型车辆经过时振幅会增加1到2个数量级,竖直方向的响应更大;并且对比相关标准,
This paper addresses evaluating the evolution of stress inside the casing-cement sheath-formation system during the cement-injecting,setting,completion and production stages.This full-life-cycle analy
Hybrid effects of nano-silica and graphene oxide on mechanical properties of oil well cement have been investigated.The cement hydration characteristics with the addition of nano-materials (NS and/or
The article analyzes and evaluatesthe filter result from stand pipe original data which created by the mud pulse after filtered by different kinds of digital filters.Then decoding the filtered data by
Located in south of Eastern Venezuela Basin,Orinoco Oilfieldis an on-shore heavy oil field in South America.The heavy oil is known for its high content of acids,heavy metals and asphaltenes with a vis
Cementing real-time remotely automatic monitoring system was developed to meet the cementing construction operation requirements and to ensure smooth and high-quality cementing work,aiming at the prob
Downhole complex conditions such as overflow and leakage usually happen very quickly,and are easy to cause serious consequences.This paper first de-scribes the current artificial intelligence methods
With drilling industry facing increasing challenges,intelligent and auto-matic drilling technologies is continuously developed and has changed the way of drilling dramatically.One key component of int
Erosive and abrasive wear effect of water-based drilling fluid (WBM) on down-hole tools may reduce the service life of down-hole tools.The erosive would be worse when a high density WBM densified with