wash boring是什么意思

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New technology of water-saving drilling and its modified applications;

节水钻探新技术及其改型应用

Properties Research on the Hydraulic Tools of the New Type of Water-saving Drilling Technology;

新型节水钻探技术水力机械特性研究

Key points and application of a new water-saving drilling technology

新型节水钻探关键技术及其应用

This paper describes the current requirements of technical specifications of geological drilling on the geological logging of water well drill cuttings,and analyzes its importance on water well drilling,the basic geology and the study of urban geology.

本文介绍了当前地质钻探技术规范对水井钻探岩屑地质编录要求,分析了岩屑地质编录对水井钻探和基础地质及城市地质研究的重要性。

The development status of mining coring, water well drilling, oil and gas drilling, continental scientific drilling, ocean drilling, polar drilling, star drilling, and tunneling, in and out of China, is discussed with emphases.

重点概述在固体矿产岩心钻探、水井钻探、石油天然气钻探、大陆科学钻探、大洋钻探、极地钻探和外星钻探及掘进工程等方面的国内外发展状况与差距,并提出重点研究开发和引进建议。

It discusses the influences of each factor on coring of mixing pile from borer,drilling level,boring bit,geologic condition,length,arrangement and type of pile,stadium and external condition,in order to ensure coring quality of mixing pile.

从钻机、钻探水平、钻头、地质条件、桩长、桩布置及桩类型、龄期、外界条件等方面详细论述了各影响因素对搅拌桩取芯的影响,以保证搅拌桩的取芯质量。

Shallow water flow hazard:a challenge in deepwater drilling;

深水钻探面临的挑战:浅水流灾害问题

Properties Research on the Hydraulic Tools of the New Type of Water-saving Drilling Technology;

新型节水钻探技术水力机械特性研究

Hydraulic Model for Downhole Drilling Condition Judgment with Water-saving Drilling System

节水钻探系统井下工况判断水力模型

Mechanism of the new technique for water-saving drilling and its experimental study

一种节水钻探新技术的机理与试验研究

Specification for drilling in hydraulic and hydroelectric engineering

水利水电工程钻探规程

Structural Design and Mechanism Study on Water-saving Rotary Percussive Devices;

节水型回转冲击钻具结构设计与钻进机理研究

Experiment of Formate Drilling Fluid for Drilling in Marine Gas Hydrate Bearing Sediments

海底天然气水合物地层钻探甲酸盐钻井液实验

Specification for operation of hydrographic geological drilling and digging for water-supply

供水水文地质钻探与凿井操作规程

Series of hydrogeologic and water well drilling tubings

GB/T9808-1988水文水井钻探管材系列

Water well construction using directional circulation drilling technology in sandy gravel aquifer

砂砾含水中正循环钻进水井施工初探

offshore drilling

海底钻探;海上钻井;海上钻探;海洋钻井;海洋钻探;近海钻探;滨外钻探

Research on Natural Gas-hydrate Pressure and Temperature Coring Technology

天然气水合物钻探取心保真技术研究

Current State of the Art of Coring and Processing in Marine Gas Hydrate Drilling

海洋水合物钻探取心与处理现状分析

SPECTRAL-BASED FATIGUE ANALYSIS FOR TYPICAL JOINT OF DEEPWATER SEMI-SUBMERSIBLE PLATFORM

深水半潜式钻井平台典型节点谱疲劳分析

Diamond drilling replaced percussion drilling.

金钻探取代了冲击钻探。

Research on the Low Temperature Rheology Property of Drilling Fluids for the Offshore Gas Hydrate Exploration

海洋天然气水合物地层钻探钻井液低温流变性能研究

Discussion On Feasibility of Using Fly-Ash in Tremie Concrete of the Castin--place Pile

钻孔桩水下混凝土使用粉煤灰的可行性探讨

STUDY ON HYDRAULIC ANTI-REVOLVE CORE SAMPLING TECHNIQUE OF PIT BORING WITH SINGLE TUBE

坑内单管水力反循环取心钻探技术研究

THE APPLICATION OF HYDROCYCLONE TO THE MUD SOLID CONTROL IN EXPLORATION CORE DRILLING

水力旋流器在岩心钻探泥浆固相控制中的应用