大家在查： tldt helpful insects 投石深交所人感觉 of childbearing CIR 吉列尔梅•卡瓦尔康蒂加拿大渥太华 textook

PDC钻头

PDC钻头

PDC钻头

PDC钻头

1

The design of bit profile is an important part of PDC bit design , and it is always made by designers on the basis of their experience .

冠部设计是 PDC 钻头总体设计的一个重要组成部分，过去一直是凭经验设计，缺乏理论依据，随意性较大。

3

New type PDC cutters and heavyset gage design promote longer bit life in hard and abrasive formations .

新型切削齿及高密度保径布齿提高钻头在硬研磨性地层中的使用寿命。

4

The optimization of hydraulic structures for PDC drill bits is an effective means to control the generation and development of bit balling.

对 PDC 钻头水力结构的优化是控制泥包生成和发展的有效手段。

6

The seventh section of this paper simply recommends such nozzles'design programme on PDC bit .

并对这套 PDC 钻头水眼设计程序做一简要介绍。

7

Generally, for the stratum of median soft , the service life of the hard alloy bit is 20-30m, Smaller than PDC bit far .

一般情况下对于中软地层，硬质合金钻头的使用寿命为 20~30m 。远小于 PDC 钻头。

8

The operation performance of PDC bits with screw drill tool applied now in oilfield were analyzed comprehensively .

综合分析了目前使用的 PDC 钻头和螺杆钻具工作特性。

9

11

It is the key to ensure that PDC bit has choiceness of the work performance to reasonably place cutting .

合理的布齿是保证 PDC 钻头有优良工作性能的关键。

14

Lashing load results in cutting teeth crack and efficiency failure . of PDC dr. . .

冲击载荷造成了切削齿崩掉及碎裂，致使 PDC 钻头失效。

16

and set up the drillability models on roller bit and PDC bit .

并建立了牙轮钻头可钻性及 PDC 钻头可钻性模型。

17

Therefore , it is necessary to analyse and predict the strength state under the complicated moving condition of PDC bit .

因此，有必要对钻头在复杂工作条件下的受力进行分析、预测。

19

The whirling is one of the main reasons of decreasing the life and the useful effect of PDC bits.

PDC 钻头的涡动是影响其使用寿命和效果的主要原因之一。

20

And reference for design of other PDC bit is provided through the study on geological PDC bit .

本文的研究为其它种类的地质 PDC 钻头的设计提供了一定得参考。

23

In addition , some bits, such as PDC bits, have a wide range of unusual and asymmetric shapes or profiles .

除此之外，有些钻头，如 PDC 钻头，具有许多非常规的、不对称的形状或剖面。

24

Application of Renovated PDC Bit for Reducing the General Drilling Cost

修复式 PDC 钻头降低钻井综合成本的应用

25

Numerical simulation and experimental checking for downhole flow field of a real PDC bit

实体 PDC 钻头流场数值模拟与实验验证

26

Study of PDC bit 's optimization matching with dynamical drilling tools and PDC bit drilling-in performance

PDC 钻头与动力钻具的优化匹配和钻进特性研究

28

Field Experimental Research on the Influence of the PDC Composite Layer Thickness on the Properties of the Diamond Bit

PDC 复合层厚度对金刚石钻头性能影响的现场试验分析

29

Development and Application of a New Type of PDC Bit Drilling in Cobble Interbed

用于砾石夹层钻进的新型 PDC 钻头的研制与使用

30

Numerical simulation and design of downhole flow field of a PDC bit with six blades and multiple interlayers

六刀翼多夹层 PDC 钻头井下流场的模拟与设计

热词推荐

大家在看

man , . cum you 's " after japan ? : - Facebook join what Yeah your then 4th as