pressure drilling

Under balance pressure drilling techniques of the horizontal well and high

塔里木轮南奥陶系碳酸盐岩高压油气藏水平井及大斜度井欠平衡钻井技术

Technique and technology for under balance pressure drilling with foam fluid

欠平衡泡沫流体钻井工艺技术

The geological design and engineering design of Bo-601 well, the main technical difficulties in drilling construction, and the pre-drilling preparation, drilling, completing and construction result of the under balance pressure drilling of Bo-601 well are introduced in detail.

结合渤601井实际情况，给出了地质设计和工程设计，分析了施工过程中主要技术难点，介绍了钻前准备工作、欠平衡钻进、完井和施工效果。

Under balance pressure drilling of Bo-601 well

渤601井欠平衡钻井技术

Application of Wind Pressure Draining Dust Technology to Construction Drainage Drilling in Soft, Thin Seam

压风排粉技术在松软、薄煤层施工抽放钻孔中的应用

In the throttle control box available, standpipe pressure is controlled by hand with lower accurate, by which underbalanced well drilling is hard to be performed.

现用节控箱采用手工控制立管压力（套管压力）的方法，精度较低，很难实现真正意义上的欠平衡钻井。

The results of some test measurement data indicate that it is feasible and provides a new and practicable method for long distance and big dimension hole-drilling to leak pressure and prevent rockburst.

通过多次试验数据表明，该方法是可行的，并为长距离、大孔径钻孔卸压防冲研究提出了一个新的可行的科学方法。

Technical difficulties and Countermeasures of carbonate reservoir under-balance pressure drilling

碳酸盐岩储层欠平衡钻井技术难点与对策碳酸亚乙烯酯的合成

This article discusses the disadvantages of managed pressure drilling, and gives a solution that is dynamic annular pressure control drilling ( DAPC).

本文论述了控制压力钻井的缺点，并给出解决途径即采用动态压力控制钻井。

Application of differential pressure testing data in leak layers interpretation during drilling

钻井过程中压力落差测试资料在漏层解释中的应用

A new throttle control box with computer servo control is used to regulate the underbalanced well drilling pressure, by which shortcomings of original control equipment and manual method are eliminated.

采用计算机伺服控制研制的节控箱来控制欠平衡钻井压力，克服了原有控制设备及手工控制方法的不足。

Drilling fluid, known as the "blood" in drilling engineering, has the functions to carry cuttings, protection wall, balance formation pressure and reduce drilling tool wear.

钻井液是钻井工程的“血液”，具有携带钻屑、保护井壁、平衡地层压力和降低钻具磨损等功能。

Air drilling, as a member of under balance pressure drilling family, is different from conventional drilling methods.

气体钻井是一种与传统钻井方式相比有着很大区别的欠平衡钻井。

The formation pressure prediction by the efficiency stress method may offer dependable parameters for drilling design and balance pressure drilling.

介绍了有效应力法预测地层压力的原理及参数的求取方法。

On the basis of the theoretical model of annular velocity field and pressure field in air drilling and combination with practical working conditions of air drilling, the calculation method of air drilling is discussed and proofed.

文中根据空气钻井环空流速场、压力场的理论模型，结合空气钻井实际工况，对空气钻井计算方法进行了有益的探索，并用实钻数据进行验证。

Managed pressure drilling applied to horizontal wells targeting carbonate gas reservoirs in middle Tarim Basin Analysis of instability characteristics of surrounding rock within horizontal section caving face in steep coal seam

塔中地区碳酸盐岩储层控压钻水平井技术急斜煤层水平分段综放开采围岩失稳特征分析

Under balance pressure drilling technology and coalbed gas development

欠平衡钻井技术与煤层气开发

In the process of balance pressure drilling in fractured carbonate formation, fluid loss is possible when the hole penetrates the fracture.

碳酸盐裂缝性地层，在平衡钻进过程中，一旦钻遇裂缝，就可能发生井漏。