井口

"And they said, We are not able to do so till all the flocks have come together and the stone has been rolled away from the mouth of the water -hole; then we will get water for the sheep."

他们说，我们不能，必等羊群聚齐，人把石头转离井口才可饮羊。

They are featured by rich sulphur (H2S) and carbon dioxide (CO2), which become a hidden hazard to corrode seriously the completion pipe string, downhole tool and wellhead equipment, to threat the wells' safety production and to bring about a very difficulty to well-completion design.

川东飞仙关组气藏多属高含硫气藏，高含量硫化氢和二氧化碳对完井管柱，井下工具和井口装置产生严重腐蚀，威胁着气井的安全生产，给完井工艺设计带来很大困难。

The key to preve n tion and reduction of the drill string failure lies in prevention.For this reaso n,in view of the different stressed characteristics of the different sections of the drill string in borehole,the research is conducted by dividing the drill st ring into four failure sections,namely,the section at the wellhead and the secti ons at the upper part,vicinity and lower part of the zero stress point,to inves tigate the essence and basic reason of the failure,and to put forward scientific and feasible preventing measures,thus,being advantageous to complete and system atic prevention and forecast of the drill string failure.

防止和减少钻具失效，关键在预防，为此，根据钻柱各部分在井内的受力特点不同将其划分为钻柱井口处、零应力点上部、零应力点附近、零应力点下部四个钻具失效段进行研究，查出其失效的实质及根本原因，提出科学可行的防范措施，有利于全面系统地预防预测钻具失效。

Pails are hanging on the mouth of a well.

两个水桶一同被吊在井口上。

This article has made statistic and analyses on many types of flameproof button and switches used in coalmine, such as travel switch, limit switch, pull switch,and so on.

就煤矿井下现用的隔爆按钮以及行程开关、限位开关、打点器、拉线开关、井口开关等进行了统计、分析，针对使用中出现的问题提出了改进措施。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than that in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明，钻杆属于早期疲劳断裂，断裂主要原因是在空气钻井过程中钻具受到的震动载荷远大于钻井液钻井过程中的震动载荷，在交变的震动载荷作用下，钻具容易产生疲劳裂纹；由于现有的井口检测仪表不能精确及时反映钻杆刺穿之后产生的泵压变化，无法及时采取预防措施，疲劳裂纹不断扩展，最终导致了钻杆断裂失效。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明，钻杆属于早期疲劳断裂，断裂主要原因是在空气钻井过程中钻具受到的震动载荷远大于钻井液钻井过程中的震动载荷，在交变的震动载荷作用下，钻具容易产生疲劳裂纹；由于现有的井口检测仪表不能精确及时反映钻杆刺穿之后产生的泵压变化，无法及时采取预防措施，疲劳裂纹不断扩展，最终导致了钻杆断裂失效。

Chi Chun oil Shandong Machinery Co., Ltd., located in China's second largest oilfield Shengli Oil Field in Dongying City, Shandong location, the main tool for petroleum products for the manufacture and sale of the company for the China University of Petroleum relying on scientific research bases, leading products include: the use of the rigs Efficient wear shoes, duplex milling Cone, Cone window milling, Xitou sets, sets milling extinguishers, the mother Cone Cone, screw drill, screw pump drives, production efficiency devices, with oil production by pumping leakproof , Feng Jing, tubing collar, the collar rod, such as wellhead valves.

采油增效装置等。山东骏驰石油机械有限公司，位于中国第二大油田胜利油田所在地山东东营市，主营产品为石油专用工具制造及销售，公司依托中国石油大学为科研基地，主导产品包括：各型修井用高效磨鞋，复式铣锥，开窗铣锥，套铣头，套铣筒，公锥母锥，螺杆钻具，螺杆泵驱动装置，采油增效装置，采油增抽防漏器，封井器，油管接箍，抽油杆接箍，井口阀门等。

Said shaft with enclosed two ends passes from marine extraction platform through submarine water-bearing stratum into submarine oil bed and has water pumping and injecting openings corresponding to the water-bearing stratum and oil bed respectively. A sand control filter is mounted to water-pumping opening. A packer is provided in the shaft between water and oil beds.

井筒从海上采油平台穿过海底水层后伸入海底油层中，其井口和井底均为封闭，对应于水层和油层处的筒壁上分别开有抽水孔和注水孔，抽水孔内侧的井筒中装有防砂过滤器，水层与油层之间的井筒中装有封隔器。

A large number of natural gas emit from the wellhead and format the mixture flammable vapor cloud with air.

井喷失控后大量天然气从井口喷出，并与空气混合形成可燃性蒸气云。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失