2) deepwater cementing
深水固井
1.
Properties and hydration mechanism of deepwater cementing system
深水固井水泥性能及水化机理
2.
Conventional accelerating agents for deepwater cementing are often inorganic salts,which bring a lot of reaction heat that threats the stability of the hydrate in deepwater.
常规的用于深水固井的水泥浆促凝剂多为无机盐类,给水泥浆带来大量的反应热,威胁到水合物层的稳定性。
3) wellbore diameter shrinkage
深井固井技术
4) deep drilling
深井钻井
1.
The paper presents drilling progresses and main technical challenges for deep and ultra-deep wells, analyzes deep and ultra-deep drilling-technique actualities worldwide from seven aspects including drilling geological descriptions and evaluations, rapid-vertical drilling techniques, ROP improvement, mud, cementing, drilling information and drilling equipment.
介绍了国内外深井超深井钻井的发展历程及主要技术难点,从钻井地质环境因素描述与评价技术、防斜打快技术、提高钻井速度技术、钻井液技术、固井技术、钻井信息技术及钻井装备7个方面详细分析了国内外深井超深井钻井技术现状,并简单探讨了我国深井超深井钻井技术存在的主要问题及与国外先进水平的差距,指出深井超深井钻井技术会朝着集成化、智能化、信息化和自动化方向、有利于提高钻井效率的方向及有利于提高油气采收率的方向发展,并对我国深井超深井钻井技术的发展提出了建议。
2.
This paper describes the effects of hydraulic energy for deep drilling, discusses some key problems on the study and applications of hydraulic power for deep drilling.
从深井水力能量分析入手,阐述了深井水力能量利用应重视和研究的问题,探讨充分利用水力能量,提高深井钻井速度的可行途径。
3.
Based on the investigation of various deep drilling techniques in which the depth exceeds 4,500 metes in the recent twenty five years, it is considered that the drilling techniques during US and North Sea of Europe are the advanced in the world and there is a tenyear gap between them and former Soviet Union and China.
通过对国内外近25年来井深超过4500m的各种各样深井钻井技术与经济情况的调研分析,认为美国和欧洲北海地区深井钻井技术居领先水平,前苏联和我国与国际先进水平有10年以上差距。
5) deep well circulation loss
深井井漏
6) deep well drilling
深井钻井
1.
Such key deep well drilling problems caused by the complex geology circumstances have been tacklied in Zhongyuan Oilfield; Therefore, a series of supporting teech-niques of casing programming for a deep well, combined drilling with a PDC bit and a downhole motor, vertical drilling, mud, cementing and well control, etc have been developed.
深井钻井具有裸眼段长、井底温度高、岩石可钻性差、机械钻速低、井眼易失稳等问题。
补充资料：固井
固井
sealing of drop-shaft bottom to rock
gUJ，ng固井(sealing of drop一shaft bottom to roek)在竖井沉井法掘进中将沉井井筒永久固定的技术。当沉井下沉达到设计深度后，为防止井筒继续下沉或出现位移，需采取加强井壁和土帮的固定措施，以隔离井筒与井外含水层的水力联系，这是沉井施工的最后一道工序。固井采取的主要措施是联接套井与沉井的上口，井筒壁后注浆以增加侧面阻力，砌筑沉井基座以增加正面阻力，最终使井筒保持稳固。 在固井之前，若刃脚坐落的基岩上面无隔水粘土层，则需构筑封底止水垫，以防止井内排水后，发生涌砂冒泥或突水事故。封底后，首先要清除套井与沉井之间的泥浆，然后在其中浇灌片石混凝土，同时将沉井上口的钢筋与套井锁口的钢筋焊接好，并浇灌混凝土，使沉井与套井连成整体。最后，排除井内积水，进行壁后注浆。一般采用分段下行、分段内上行式注浆方法。当采用泥浆护壁减阻时，要先注清水，把泥浆置换出来后，再注水泥浆。井底筑有止水垫时，要进行工作面预注浆。待浆液凝固后，破除封底止水垫，在基岩中砌筑沉井基座。待基座砌好，沉井施工结束，即转入井筒普通法掘进。 (石达民)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条