查询词典 drilling bit

The air well drilling is one kind of practice underbalance drilling,compared with other well drilling relatively have one's own advantages improve the speed of drilling,Protect the oil gas from bearing formation,find the oil and gas in time,but require especial equipment,Minimum displacement in the air well drilling is the difficult point,and its key too.

空气钻井是一种实用的欠平衡钻井，与其他钻井比较有自己的优势：提高钻速，保护油气层，及时发现油气，但装备要求高；空气钻井中最小排量的是难点，也是其关键点。

Pneumatic hammer drilling technology with low wob,low rate of revolution and high capacity to break rock is one of the best effective methods to solve the problems of hard rock drilling.It includes air drilling and rotary drilling technology,so its penetration rate is usually two or three times higher than rotary drilling.

空气锤钻井是一种低钻压、低转速、高冲击破岩回转钻进技术，它兼容了气体钻井和冲击回转钻井的优势，其机械钻速一般比回转钻井高，是当今解决硬岩钻井难题的一种有效方法。

Compared with traditional drilling methods with turning drilling rig and percussion reverse circulation drilling rig, the mentioned drilling technology can improve drilling efficiency and quality.

较之传统的回转钻机和冲击反循环钻机钻进，旋挖钻进工艺提高了成孔效率和成孔质量，同时拓宽了旋挖钻机的应用领域。

Never developing a new style, nay never in indiscretion, nay nay, never shallow or deep from time to time nay, never gloriously radiant Rightwards a bit, guide rainstorms rightwards a bit leftwards a bit, direct lovers leftwards a bit downwards a bit, move heads rightwards a bit upwards a bit, put today upwards a bit Loosen the rigid death tighten the valve of the spring make the amended narration more plain and simple make the soft whips more straight and frank The wind travels on the water ahead the feet walk on the earth behind in the middle I persist in my old ways well, why not a little more humble Well, why not a little more noble Translated by Guo Hezi

不能独辟蹊径，绝对不能不能轻举妄动，绝对不能绝对不能，不能忽浅忽深绝对不能，不能光芒万丈向右一点，把暴雨向右移一点向左一点，把情人向左移一点向下一点，把头颅向下移一点向上一点，把今天向上移一点把坚固的死亡松动一下把春天的阀门拧紧一下让修补的叙述通俗一些让柔软的鞭子耿直一些前面有风行水上后面有脚踏实地中间有我行我素哎，能不能再委琐一点哎，能不能再高尚一点

Based on the drilling operation of 4 Wells, this article describes the basic characteristic of coalbed methane and technical difficulties in drilling. Some technical keys as borehole quality, fresh Water drilling,fresh water coring, coal-bed methane protection are solved through application of a series of techno1ogical measures such as optimization of rock bit, optimization of drill stem, optimization of drilling parameters and string coring and etc. The experimental performance, especially in fine-grained ...

本文以四口井的施工为例，着重介绍了煤层气井的特点，并指出了钻煤层气井的几个技术难点，通过钻头优选，钻具优选，钻井参数优选，绳索式取心技术等的现场实施和应用，基本解决了井身质量，清水钻井，清水绳索取心，煤层气保护等几个方面的技术难题，文中还介绍了使用中原油田自行设计的中原9508绳索取心工具的取心情况，尤其是在粉煤层地区的取心情况，这将为今后的煤层气开发打下坚实的基础。

Moreover drilling measures in different strata are pointed out,which are firstly drilling without slurry in part of silty clay layer,secondly adopting double-bottom bailing bit and bore directly and abandoning slurry with impact drilling rig in muddy clay layer,thirdly selecting short screw auger at low speed in gravel layer,finally choosing rock-socketed drilling tube in shaly sand layer.

指出旋挖钻机在不同地层中的钻进措施：部分粉质粘土层中可用清水或干孔钻进，淤泥质粘土层中采用双底捞砂钻头、直接用冲击钻机钻孔弃浆，圆砾层中采用短螺旋钻头低速钻进，泥质砂岩层中采用嵌岩钻筒钻进等措施，保证施工工期满足架梁节点要求。

This article in the collection analyzes the domestic and foreign high speed roller bit bearing research pertinent data in the foundation, in view of the present high speed roller bit bearing in the field application existence's question, through to the roller bit bearing main failure mode and the reason analysis, found the extension roller bit service life the theory basis, uses the method which the theory and the experiment unified to develop to the roller bit bearing surface strengthening technology as well as the bearing enclosure system's preliminary study, has provided a new mentality and the method for roller bit's design, further impelled the modern well drilling processing technology the development.

本文在收集分析国内外高速牙轮钻头轴承研究有关资料的基础上，针对目前高速牙轮钻头轴承在现场应用存在的问题，通过对牙轮钻头轴承主要失效形式和原因的分析，找到延长牙轮钻头使用寿命的理论依据，采用理论与实验相结合的方法开展了对牙轮钻头轴承表面强化技术以及轴承密封系统的初步研究，为牙轮钻头的设计提供了一条新的思路和方法，进一步推动现代钻井工艺技术的发展。

However, during borehole grouting pile construction of the present, round section piles are used universally. Generally speaking, the boreholes are drilled by a large diameter round piling bit. Because of the restriction of factors of the mud pumps, and drilling equipments, and drilling technique, it would result in such problems as fol lowing: a bigger cutting area and overlarge cuttings volume, and more hole bottom sediments, difficult cuttings discharging, and serverely repeat cuttings breaking, and using more concret grouting amount, and lower drilling speed, faster bit wearing, and longer working period, bigger material and labor ex haust, and higher engineering cost, unreasonable ratio of loading capacity to volume of pile foundation, and lower comprehensive economic benefits, and so forth.

然而，钻孔灌注桩施工中，目前最为普遍采用的是圆形断面桩基，一般采用大口径圆形基桩工程钻头，由于国内生产的泥浆泵、钻具及钻进方法等因素的限制，从而使钻孔破岩面积和体积过大，造成孔底沉渣过多，排渣困难且排浆量大，重复破碎问题突出，混凝土灌注量大，直接反映为钻进效率低、钻头磨损快、施工工期长、材料能耗和劳动消耗大、工程成本较高、桩基荷载能力与体积比不合理、综合经济效益不理想等，这些问题严重影响和制约着钻孔灌注桩施工技术的发展和进步。

A self-drilling anchor (10) for use in a friable material (1) comprises a body (12) having an axis (13), a flanged rear end (14), a drilling front end (16) and a generally cylindrical portion (18) therebetween having an outer surface (20) with a thread (22) disposed thereon, wherein the body forks, beginning at a predetermined distance from the flanged rear end, into a first leg (24) and a second leg (26), the first leg extending forwardly into a drilling tip (28) and having a generally rearward facing shoulder (30) angled obtusely outwardly with respect to the axis, wherein the body (12) has an axial bore (32) for receiving an elongate fastener (2), the axial bore (32) extending substantially through the flanged end (14) and the generally cylindrical portion (18) and leading to the generally rearward facing shoulder (30), wherein the anchor (10) has a drilling mode wherein the second leg (26) nests behind the generally rearward facing shoulder (30) of the first leg (24), and an anchoring mode wherein the legs are pivoted apart from one another.

一种用于易碎材料(1)中的自攻螺钉(10)，包括：主体(12)，其具有中心轴(13)、带有凸缘的后端部(14)、用于钻孔的前端部(16)和位于所述后端部和前端部之间的通常为圆柱状的部分(18)，所述圆柱状部分(18)的外表面(20)上布置有螺纹(22)，其中主体从距离带有凸缘的后端部的预定的距离处开始分叉为第一腿(24)和第二腿(26)，第一腿向前伸入钻孔尖端(28)，并且具有相对于中心轴向外成钝角的通常面向后的肩部(30)，主体(12)具有容纳细长状紧固件(2)的轴向孔(32)，轴向孔(32)基本延伸穿过带有凸缘的端部(14)和通常为圆柱状的部分(18)，并且通向通常面向后的肩部(30)，螺钉(10)具有钻孔状态和固定状态，在钻孔状态，第二腿(26)套在第一腿(24)的通常面向后的肩部(30)之后，并且在固定状态，腿彼此转动分离。

Based on the strict requirements of safely and fleetly deep drilling and reservoir protection to drilling fluid in drilling engineering, the modified polyalcohol anti-sloughing agent was developed and then a new alcohol drilling fluid was gained through screening other additives and optimizing formulation.

基于钻井工程中安全快速钻进及油气层保护对钻井液的严格要求，开发出了改性多元醇防塌剂，在此基础上通过优选其他处理剂和配方优化研制出了一种新型醇类钻井液。

Warden: That's a beautiful dog, but don't bring her again.

那是条漂亮的狗，但是不要再把她带来了。

You get up in the morning – no hangover!

你第二天早上起来的时候—不会宿醉！