在石油钻井工程中，影响井壁稳定性的因素较多。
Many factors can influence stability of well wall in the area of petroleum drilling engineering.
从力学分析入手，建立了井壁稳定问题的力学模型。
A mechanical model for well bore stability is established based upon mechanical analysis.
大斜度井泥页岩的井壁稳定对油气井的正常钻井十分重要。
Wall stabilization of highly inclined shale boreholes is important to drill a well successfully.
该软件主要利用测井资料钻前预测空气钻井井壁稳定情况。
This software mainly use the logging data to forecast the stability of air drilling.
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。
The study work of wellbore stability and capacity to carry rock cutting during liquid UBD and gas drilling is developed.
形成了井壁稳定与承压堵漏技术、固井技术和油气层保护技术。
The technologies of hole stability and sealing by pressurization, cementing and reservoir protection were formed.
提高取心率与保持井壁稳定性是对油页岩充分评价的关键性技术。
Increased core rate and to maintain borehole stability obtained is crucial to fully evaluate the oil shale.
最后选择适当的强度准则，形成气体钻井井壁稳定性分析模型系统。
Then by selecting appropriate strength criteria, the borehole stability analysis model for gas drilling can be set up.
同时它还与井内压力平衡，井壁稳定，套管和钻柱强度设计密切相关。
Meanwhile, underground cycle temperature is also related to the pressure balance in a well, the stability of well bore and the design of casing and string.
泥页岩井壁失稳的化学与力学耦合作用是井壁稳定性研究中较为关注的问题。
Shale stability coupling with mechanics and chemistry is a focus of attention in the field of borehole wall stability study.
使该井在施工期间，井壁稳定、起下钻井眼畅通，全井事故、复杂时效均为零。
Thus, stable hole, smooth drilling and tripping operations and zero outage time have been obtained in the construction period.
生产过程中的井壁稳定性和地层出砂问题是剩余油开采过程中的主要难题之一。
Wellface stability and formation sand production in the process of production is one of tough problems in remaining oil production.
描述了关于滩海地区“井壁稳定”的综合分析方法及计算机辅助分析软件的实现。
The paper described the realization of the "well-wall stability" synthesizing analysis methods and computer aid analysis software in the beach area.
描述了关于滩海地区“井壁稳定”的综合分析方法及计算机辅助分析软件的实现。
The paper described the realization of the" well-wall stability" synthesizing analysis methods and computer aid analysis software in the beach area.
此外，野猫井的井壁稳定性一般凭经验判断，所以复杂地层的井壁失稳事故在所难免。
In addition, the stability of wildcat well is generally determined by experience, so the disaster at complex formations is unable to avoid.
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。
These researches settled basic theory of wellbore instability research, and provided basic data to research technology countermeasures of wellbore stability.
钻遇地层复杂，井壁稳定性差，井漏、井涌、井塌、缩径、卡钻等井下复杂情况频发；
Drilled formations are complex with unstable wall. Lost circulation, well kick, borehole collapse, diameter shrinkage, sticking and other complex situations often occur.
同时给出了利用地震层速度预测地应力的BP神经网络模型，以在钻前预测井壁稳定性。
Meanwhile, the predicting method of stress is proposed based on BP's neural network by using the seismic interval velocity, in order to predict borehole wall stability.
在影响水平井完井方式选择的因素当中，水平井的井壁稳定性是其中最重要的因素之一。
The stability of horizontal well is one of most important factors which affect the choice of completion.
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。
The wellbore stability, fracturing, cementing strength, and casing failure during thermal recovery are affected by thermal stress.
利用该关系式建立了出砂判别模式和井壁稳定性分析模式，在实践中取得了较高的符合率。
The relation formula is used to develop the sand production test model and wall stability analytical model.
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。
Wellbore instability is a very complex problem encountered while drilling. The factors of affecting wellbore stability are various and much complicated.
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。
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...
所得结果不仅可用于煤矿立井井壁稳定性分析，对深立井井壁结构的优化设计同时具有重要的参考价值。
The research result is not only used to the stability analyzes of shaft in mine, but also used as the reference of the optimization design of shaft construction in rock part of deep shaft.
泥页岩比表面积与泥页岩水化特性、力学性质以及渗水性密切相关，是评价泥页岩井壁稳定性的关键参数。
The specific surface area is closely related to shale waterize property, property of mechanics and weeping property. It is a key factor for evaluating borehole stability of mud shale.
研究表明，影响空气钻井井壁稳定的主要因素有三个：力学不稳定，水化不稳定和岩体破裂或弱面不稳定。
Preexisting research shows that there are three main factors that affect the borehole stability of Air-Drilling: mechanical reason, hydration reason and the Weaked surface instability reason.
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。
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.
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。
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.
井壁失稳一直是困扰油气井工程的难题，泥页岩渗透特性的定量测定是评价泥页岩井壁稳定性的重要指标之一。
The problem of wellbore instability has been puzzling drilling operations all the time, and to quantify the permeability of shales is an important index to estimate shale-borehole's instability.
井壁失稳一直是困扰油气井工程的难题，泥页岩渗透特性的定量测定是评价泥页岩井壁稳定性的重要指标之一。
The problem of wellbore instability has been puzzling drilling operations all the time, and to quantify the permeability of shales is an important index to estimate shale-borehole's instability.
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