侧钻

Stress-relief structure not in accordance with related standard and the stress situation would lead the thread root to be the weakest position of drill collar box.

结果表明，钻铤材料中MnS夹杂物超标，螺纹底部和牙侧存在腐蚀坑和加工划痕，这些缺陷的存在降低了钻铤的服役能力。

Methods: thirty-four Japanese white rabbits are used as experimental animals. Under no destroying the posterior ligaments, expose the fifth and sixth transverse processes and intertransverse membrane. The transverse processes are decorticated. On each side bone graft bed the following four kinds of grafts are put, they are: autologous iliac crest、allograft+rhBMP-2、xeograft+rhBMP-2、and xeograft+HA.

34只成年日本大耳白兔，在不破坏脊柱后侧稳定结构的前提下，显露双侧的L5、L6横突，用磨钻去皮质，然后每侧分别随机地植入2.5ml左右的下列四种植入物：自体髂骨、同种冷冻干燥异体骨+rhBMP-2、异种冷冻干燥骨+rhBMP-2、异种冷冻干燥骨+HA。

Others, parts on Kelly bar shouldn't be changed or demounted at random; welding shouldn't be done on the part which did not weld formerly; maintenance should be guided by manufacturer, it is prohibited to weld the key side in principle, welding should be done on three keys at one time, indexing is ensured by grinding after welding, internal keys should be grinded of its full-length to ensure indexing.

其它，钻杆上的制件不要随意拆换或卸掉；不要在原来不焊接的部位自作主张焊接；维修钻杆要有钻杆生产厂家指导，原则上不允许对键侧进行焊补，焊补要三键同时进行，焊补后修磨保证分度，内键要通长焊补修磨，保证分度。

In silm hole sidetracking horizontal well, JiDong oil field have the abilities of window cutting, bit optimizing, trace control, drilling fluid and well completion system selecting.

冀东油田在小井眼侧钻水平井方面已具备了开窗、钻头优选、轨迹控制、钻井液、不同完井方式的选择等方面的适合本油田的特色技术。

ABSTRACT Drilling time will be lasted and lateral force on casing exerted by drill pipe will increase in case of drilling deep well, ultrad...

在深井、超深井、大斜度井、大位移井及水平井中，钻井时间延长、钻柱作用在套管上的侧向力增高，因此套管和钻柱的摩擦与磨损问题越来越突出。

Drilling time will be lasted and lateral force on casing exerted by drill pipe will increase in case of drilling deep well, ultradeep well, high inclined hole, extended reach well and horizontal well, therefore, friction and wear between casing and drill pipe became a severe problem.

在深井、超深井、大斜度井、大位移井及水平井中，钻井时间延长、钻柱作用在套管上的侧向力增高，因此套管和钻柱的摩擦与磨损问题越来越突出。

New methods for preventing and treating bottom water coning are found out through deeper understanding of the development practice and rational adjustment, which are to control liquid production in low water cut period, to produce oil and water simultaneously in medium water cut period, and to drill side - track well or to shut well down to kill coning in high water cut period.

针对小型块状边底水油藏特征，编制了适合油藏特点的开发方案，在开发实践中不断加深认识，合理调整，探索出低含水期控制液量、中含水期油水同采、高含水期老井侧钻、关井压锥等有效防治扣治理底水锥进的新方法，形成了小型边底水油田开发的成熟技术，实现了油田高速高效开发，为今后同类型油田的开发提供了借鉴。

Branch horizontal well ; hole trajectory control ; casing window-opening ; barefoot laterally drilling ; application of tools

分支水平井；井眼轨迹控制；套管开窗；裸眼侧钻；工具应用

Study is conducted based on major technical difficulty in window-opening laterally drilling well cementation in small bore hole,with success achieved in salt wells of Suining,Longchang,Changning,Changshan etc.

针对在小井眼开窗侧钻固井过程中存在的主要技术难题进行了研究，并在四川遂宁、隆昌、长宁、长山等盐井的应用中取得了成功。

It is widely used in heavy repair, dealing with the well shoes casing is damaged seriously.

套管开窗侧钻广泛应用于油田的大修、处理套管损坏的井和油田中后期的挖潜增效。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。