With the recent abrupt fluctuations in oil pricing and the need of complying with
environmental and social requirements, nowadays it is an urgent call for the oil and gas …

Cement sheath shrinkage after placing the cement slurry in the annulus has been of concern
in oilwell cementing because of the potential detrimental effects that shrinkage can have on …

Development of high early-age compressive strength oil well cement is an important task in
the oil well cement design. Achievement of suitable early-age compressive strength of oil …

为了解决深井超深井长封固段固井时水泥浆柱顶部缓凝或超缓凝的问题, 合成了高温缓凝剂HTR-
300L, 并对其性能进行了评价. 含HTR-300L 水泥浆不同温度下稠化性能测试结果及差热分析 …

Radial jet drilling, RJD is an unconventional drilling technique that uses the jet energy of
high velocity fluids to drill laterals with different geometries in both conventional and …

Strength retrogression of set Portland cement at elevated temperatures, for example at
temperatures greater than about 230° F, has been known for many years, and is believed to …

An innovative apparatus has been developed in this study to cure and test oil well cement
specimens under simulated down-hole conditions with high temperature and high pressure …

When Portland cement sheath is submitted to temperatures above 110° C in oil well
wellbore conditions, the compressive strength retrogression phenomenon is observed. This …

It is essential to maintain the oil well cement integrity effectively and economically. The
classical literature review of cement slurry preparation has shown high temperature in …

Hollow glass spheres (HGS) present a novel solution and a practical tool for the drilling
industry. HGS can function as a density reduction agent for various types of fluids and …