An extremely high-pressure formation, even if not flowing, may have wellbore stability problems.
对于极端高压地层，即使不流动，也可能存在井眼稳定性问题。
The model is applied in evaluation of rock mechanics and wellbore stability in some areas, and it wins a good effect.
并将建立的模型应用于某地区的岩石力学参数及井眼稳定性评价中，现场应用取得了很好的效果。
The study work of wellbore stability and capacity to carry rock cutting during liquid UBD and gas drilling is developed.
开展了液相欠平衡及气体钻井井壁稳定及井筒携岩能力研究。
Wellbore stability, hole cleaning, toque and drag are key factors in extended reach well drilling of Xijiang 24 - 3 - A14.
西江24—3—A14大位移井的摩阻与扭矩、井眼稳定性及井眼清洁是钻井成功与否的关键因素。
The wellbore stability, fracturing, cementing strength, and casing failure during thermal recovery are affected by thermal stress.
井壁热应力对于井壁稳定性、水力压裂、水泥环胶结强度、热采套管的损害等都有影响。
More and more importance is attracted to the wellbore stability evaluation while drilling, because it can reveal the wellbore status real-time.
而随钻井眼稳定性评价，由于其实时性，能够及时反映井眼情况，从而，得到越来越多的重视。
Wellbore instability is a very complex problem encountered while drilling. The factors of affecting wellbore stability are various and much complicated.
井壁失稳是钻井工程中经常遇到的一个十分复杂的问题，影响井壁稳定的因素是多方面的。
The peculiarity of this wellbore stability model is to determine whether the wellbore rock is in the critical plastic state rather than elastic limit state.
依据井壁围岩是否达到临界塑性状态而不是弹性极限状态来判断井壁稳定性是气体钻井井壁稳定分析模型的特殊之处。
These researches settled basic theory of wellbore instability research, and provided basic data to research technology countermeasures of wellbore stability.
为研究井壁失稳的机理奠定了理论基础，并为研究井壁稳定技术对策提供了基础数据。
Results show that, the reaction products of hydrogen sulfide and agent actually plays a role of cementing, which can significantly enhance wellbore stability.
实验表明，硫化氢与处理剂反应产物确实起到了“胶结物”的作用，可以明显强化井壁岩体稳定性。
First, we must take Wellbore stability of the gas drilling into account, it is the key factor that determined whether the drilling process can use the Air-Drilling technology.
井壁稳定问题就是气体钻井首先需要考虑的问题，它也是决定钻井过程中能否采用空气钻井技术的关键因素。
The method to predict wellbore stability is provided considering hydration and filtrate cake quality. In addition, this method was applied in field with better prediction results.
给出了考虑水化作用和滤饼质量后预测井壁稳定性的方法，同时将该方法应用于现场，取得了较好的预测效果。
At the same time, we studied that the different parameters how to affect the crack extending and wellbore stability. Thus this paper offered the scientific foundation for correct under...
同时研究了不同参数对裂缝扩张和井壁稳定的影响，为正确认识裂缝井眼的稳定性提供了科学依据。
And rock mechanical parameters are essential to the wellbore stability evaluation, so developing the model of rock mechanical parameters evaluation while drilling becomes core of the work.
岩石力学参数是随钻井眼稳定性评价的基础参数，所以，建立岩石力学参数随钻评价模型，成为此项工作的核心。
It also figures out that the wellbore stability of directional well in the West of Sichuan Basin will be much better than the straight hole with the increasing of the deviation and relative azimuth.
计算结果同时证明，如果在川西深层采用定向井钻井，其井壁稳定性将不会因为井斜角、相对方位角的变化而变差，且地层破裂压力会随井斜角和相对方位角的增加而大幅提高。
It is a big problem in petroleum industry for the wellbore to lose stability in the process of drilling.
井壁失稳问题是石油钻井过程中普遍存在并一直是困扰石油工业界的一个大问题。
Based on elastic theory and rock mechanics, the mechanical stability of wellbore of multilateral junctions is analyzed and researched.
本文以弹性理论与岩石力学为基础，对分支井的连接井段井壁力学稳定性进行分析和研究。
Using thermal elastic mechanics illustrate changing of stress field caused by temperature changing of well wall and describe the change of temperature effect on stability of wellbore.
应用热弹性力学方法求解井壁由于温度变化而导致的应力场变化，并定量地给出温度变化对井壁稳定的影响，对深井安全施工有一定指导意义。
The elastic stability problems of wellbore are studied according to the anisotropic strength criterion.
简要论述该各向异性强度准则，根据该准则研究了井筒的弹性稳定问题。
The bending failure stability accrued with the increase of the running load, when the small size casing, which was run into the wellbore under the deep well, encountered the resistance.
深井小尺寸套管下入遇阻时，随着下放力的增加，将产生失稳弯曲。
The bending failure stability accrued with the increase of the running load, when the small size casing, which was run into the wellbore under the deep well, encountered the resistance.
深井小尺寸套管下入遇阻时，随着下放力的增加，将产生失稳弯曲。
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