压差卡钻

探讨了井眼方位左右漂移、钻具组合降斜作用、压差卡钻及岩屑携带等问题，并提出了相应技术措施。

The difficulties such as wellbore azimuthal drift , drilling assembly dropping effect , differential pressure sticking and cutting carrying are discussed , and technical measures are proposed .

欠平衡钻井由于有利于发现和保护油气层、提高钻速、降低成本，减少井漏及压差卡钻等复杂情况，而受到人们的高度重视。

Under balance drilling is paid great attention to by people for it is favourable for discovering and protecting oil and gas reservoirs , raising drilling speed , reducing cost and lessening drilling lost circulation and differential pressure sticking .

XN-1型压差卡钻趋势测定仪的研制

A device for predicting pressure differential sticking trend

关于压差卡钻临界值的探讨

Pressure ; Approach to Critical Value of Differential Sticking

新疆深井低压高渗地层防止压差卡钻技术研究

Stratum study on technology to reduce the sticking tendency in deep well of low

压差卡钻是定向钻井施工中最容易发生的卡钻事故之一。

Differential pressure pipe-sticking is one of the most common faults in directional well operations .

对定向井压差卡钻的分析有利于更好的进行定向钻井的施工。

It is beneficial to carry out the construction of directional well through the analysis of directional differential pipe-sticking .

分析了压差卡钻的去水化解卡机理及其影响因素，推导出了去水化用用驱动力的表达式。

Based on discussion of the mechanism of stuck releasing by dewatering , the equation of dewatering drive force is derived .

分析了油页岩地层钻进中压差卡钻发生的原因，提出了预防压差卡钻的途径及处理方法，并通过工程实例来强调预防为主的重要性。

Analysis was made on the causes of differential pressure sticking in drilling in oil shale ; and the prevention and treatment measures were proposed with field cases .

采用这项技术，可以有效地防止钻井过程中对产层的伤害，有利于保护油气层，提高钻速、降低成本，减少井漏及压差卡钻等复杂情况。

Adopting the technology can prevent from formation damage effectively in drilling process , protect reservoir , increase penetration rate , decrease drilling cost , lost circulation and differential sticking .