D.D.是什么意思

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用法例句

Analysis of axial load influence on mechanics characteristic of ocean deep water drilling riser;

轴向载荷对海洋深水钻井隔水管力学特性的影响分析

Achievements on deep water drilling fluid research;

海洋深水钻井钻井液研究进展

As more and more oil and gas resources are discovered in deepwater worldwide,the deep water drilling has become more and more in recent years.

从目前国内外深水钻井实践出发,对深水的钻井设备、定位系统、井身结构设计、双梯度钻井技术、喷射下导管技术、动态压井钻井技术、随钻环空压力监测、钻井液和固井工艺技术和钻井隔水管及防喷器系统等关键技术进行了阐述,对深水的钻井设计和施工进一步向深水钻井领域发展具有重要导向作用。

Effect of buoyancy modules on main performances of deepwater drilling riser;

浮力块对深水钻井隔水管主要性能的影响

Mechanical stability analysis of subsea wellhead for deepwater drilling;

深水钻井水下井口力学稳定性分析

Prediction of gas hydrate formation region in the wellbore of deepwater drilling;

深水钻井井筒中天然气水合物生成区域预测

Static analysis of deep-hole drilling in the circuit system

深孔钻削中油路系统静态特性分析

A fuzzy controlling device for deep-hole drilling process is introduced to solve the problems of the deviation,flection and breakdown of drill bits and bars caused by the torque change in drilling.

针对深孔钻削过程中出现切削扭矩异常变化导致钻头、钻杆损坏等问题,设计一套即时检测刀具扭矩、采用模糊控制方法控制钻削进给量的深孔钻削过程智能控制设备。

A deep-hole drilling device,which is mounted onto a universal lathe, is to be introduced in this article.

介绍一种安装于普通车床上的深孔钻削装置,该装置使普通车床在保持原有加工功能的前提下,具有深孔钻削功能。

The paper presents drilling progresses and main technical challenges for deep and ultra-deep wells, analyzes deep and ultra-deep drilling-technique actualities worldwide from seven aspects including drilling geological descriptions and evaluations, rapid-vertical drilling techniques, ROP improvement, mud, cementing, drilling information and drilling equipment.

介绍了国内外深井超深井钻井的发展历程及主要技术难点,从钻井地质环境因素描述与评价技术、防斜打快技术、提高钻井速度技术、钻井液技术、固井技术、钻井信息技术及钻井装备7个方面详细分析了国内外深井超深井钻井技术现状,并简单探讨了我国深井超深井钻井技术存在的主要问题及与国外先进水平的差距,指出深井超深井钻井技术会朝着集成化、智能化、信息化和自动化方向、有利于提高钻井效率的方向及有利于提高油气采收率的方向发展,并对我国深井超深井钻井技术的发展提出了建议。

This paper describes the effects of hydraulic energy for deep drilling, discusses some key problems on the study and applications of hydraulic power for deep drilling.

从深井水力能量分析入手,阐述了深井水力能量利用应重视和研究的问题,探讨充分利用水力能量,提高深井钻井速度的可行途径。

Based on the investigation of various deep drilling techniques in which the depth exceeds 4,500 metes in the recent twenty five years, it is considered that the drilling techniques during US and North Sea of Europe are the advanced in the world and there is a tenyear gap between them and former Soviet Union and China.

通过对国内外近25年来井深超过4500m的各种各样深井钻井技术与经济情况的调研分析,认为美国和欧洲北海地区深井钻井技术居领先水平,前苏联和我国与国际先进水平有10年以上差距。

Calculation method of rig hook load on deepwater drilling platform

深水钻井平台钻机大钩载荷计算方法

Determination of Safe Window of Drilling Fluid Density for Deepwater Drilling

深水钻井安全钻井液密度窗口确定方法研究

Study on Deepwater Drilling Wellhead Stability Analysis of West Africa JDZ-2-1 Well

西非JDZ-2-1井深水钻井井口稳定性分析研究

The Study of Natural Gas Hydrate Formation during Deepwater Drilling;

深水钻井中天然气水合物预测的研究

Coupled System Analysis for a Deepwater Drilling Riser

深水钻井隔水管耦合系统分析(英文)

Research on wave-loading fatigue of drilling riser in ultra-deep water drilling

超深水钻井系统隔水管波致疲劳研究

Research on Sub-sea BOP Arrangement for Deepwater Drilling

深水钻井水下防喷器组配置选型研究

The method for configuration of deepwater drilling riser buoyancy modules

深水钻井隔水管浮力块配置方法研究

Development of the artificial buoyant seabed(ABS)

浮筒式深水钻井装置(ABS)的研制

Research on the Method of Wellbore Temperature and Pressure Calculation during Deep-water Drilling;

深水钻井环境下的井筒温度压力计算方法研究

Analysis on Mechanical Stability of Subsea Wellhead and Bearing Capacity of Conductor for Deepwater Drilling

深水钻井井口力学分析及导管承载能力研究

Early kick detection methods for deepwater drilling and its future development

深水钻井早期井涌检测方法及其未来趋势

HORIZONTAL WELL DRILLING TECHNOLOGY USED IN HIGH-PRESSURE DEEP WELLS IN KAZAKSTAN

哈萨克斯坦高压深井水平井钻井技术

Drilling Fluid Technology for Ultra Deep Horizontal Well in Puguang Gas Field.

普光气田超深水平井钻井液工艺技术

Analysis on subsea wellhead stability of surface BOP drilling system in deepwater operations

深水水上防喷器钻井系统水下井口稳定性分析

Application of short radius horizontal well drilling technology in ultra-deep well in Tahe oilfield

小井深超深短半径水平井钻井技术在塔河油田的应用——以TK1105CH井为例

Hydrodynamic Analysis for a Deep-water Semi-submersible Drilling Platform;

深海半潜式钻井平台水动力性能分析

The Application of High Temperature Drilling Fluid Technology in Well Bishen-1.

超高温水基钻井液技术在超深井泌深1井的应用