overcoring method

用法例句

Determining 3D in-situ stress with a new borehole deformeter by single overcore;

一次套钻确定三维地应力的新型钻孔变形计

Based on the analysis of drill bush wear,the methods of determining the wear tolerances and lifetime of the drill bush in the design of drilling jig are presented.

通过对钻套磨损的分析 ,给出了钻床夹具设计中钻套磨损公差及使用寿命的确定方法。

Make Use Guide Drill Case Drill a Hole Lead to of Deviate Heart of a Drill

使用导向钻套钻孔引出的中心偏移问题

"Set a trap for him to walk into, eh?"

“设下圈套给自己钻，是吗？”

drive bushing, Kelly,for well-drilling machines

凯氏传动衬套,钻井机用

surface hole drilling

钻下表层套管的井眼

compound center drill without jacket

不带护套复合中心钻

7.12 Trip up at once, pull the bit into the casing.

立即起钻，将钻头提到套管内。

wash-and-drive method

边冲出钻屑边打入套管钻进法

5.10 Drill cement with seawater and then displace the new mud into the hole as drilling out of the casing shoe.

用海水钻水泥塞，钻到套管鞋时替入泥浆。

Pull out (or run in ) the string up to the shoe and hang it on the 5 inches pipe ram] .

起钻（或下钻）至套管鞋处，并把钻具悬挂在5”闸板防喷器上。

THE PREFECT AND APPLICATION OF THE OTHER NECESSARY TECHNIQUES TO THE SLIM HOLE LATERAL DRILLING

套管开窗侧钻井配套工艺技术研究与应用

blank-casing bit

套管底部装用的环状钻头坯

Research and Application of Casing Drilling Technology in Shengli Oil Field;

套管钻井技术在胜利油田的应用研究

Application of side tracking casing cutting window technique in Wangyun 2B Well;

套管开窗侧钻技术在王云2B井的应用

The development and application of a new type rock bit with bearing liner structure;

镶套轴承结构牙轮钻头的开发与应用

Matching technology application of sidetracking in Miao C25-15 well

侧钻井配套技术在庙C25-15井的应用

Application of Sidetracking Technique through Cutting Window on Casing in Bamianhe Oilfield

套管开窗侧钻技术在江汉油田的应用

A complete set of fast drilling technology used on the well X in the LG area

LG地区X井快速钻井配套工艺技术

Elementary Introduction to Construction and Quality Control of Cast-in-place Engaged Pile

全套管钻孔咬合桩的施工及质量控制