压井作业

ZY-Ⅰ型井下不压井作业装置

Model ZY-I Downhole Service Equipment Without Well - Killing

高温不压井作业工艺技术研究与试验

The research and testing of high-temperature snubbing operation technology

不压井作业设备引进技术研究常压井段负压钻井技术探讨

Technical survey on imported snubbing unit Discussion on Underbalanced Drilling Techniques under Conventional Pressure Formations

全过程欠平衡钻井中的不压井作业

No-Killing Operations in Whole Course Underbalanced Drilling

针对这些问题，开展了高温不压井作业工艺技术研究与试验。

In view of these issues , the study and testing of high temperature snubbing operation technology was initiated .

采用此装置在不压井作业中封堵尾管以实现油管立柱起下的作用。

The device used in the snubbing block the tail pipe in order to achieve the role of the tubing from under the column .

在中国现有的油气层保护技术中，还没有一种技术完全实现真正意义上的油气层保护，不压井作业技术的引进，为实现真正意义上的油气层保护提供了可能。

In China among the existing reservoir protection technology , there still is a kind of technology fully achieving the true sense of the oil gas reservoir protection .

立管压力和套管压力是油气井井控作业中两个重要的压力数据，常规压井作业中用立管压力进行控制。

In oil-gas well control operation both stand pipe pressure and casing pressure are important pressure data . We often use standpipe pressure to conduct well control in common well-killing operations .

井下隔离技术是利用套管阀将井下的油气和压力封隔在阀板以下，是目前最实用的一种不压井作业技术。

The downhole isolation technology is to use downhole isolation valve to isolate the oil / gas and downhole pressure below the valve , which is currently the most practical snubbing technique .

建议我国开展不压井作业在欠平衡钻井中的应用研究，以真正实现全过程欠平衡钻井，充分发挥欠平衡钻井的作用。

This paper finally suggests that application studies of no-killing operations in underbalanced drilling should be conducted in China to realize actual whole course underbalanced drilling and to make full use of functions of underbalanced drilling .

注水井不泄压修井作业技术解决了注水井注水层段调整、更换管柱及配件等一系列井下作业施工难题。

Tech of work-over operation without pressure leakage resolves series problems of adjustment of water injection section , changing producing string and repairs parts .

卡瓦是在不压井修井作业中起下管柱的重要夹紧工具。

Slip is an important clamping tool in the process of workover operation .

长行程液压不压井起下作业装置高压、超深井液压震击器的改进及应用

Long-stroke hydraulic snubbing unit Improvement and Application of Hydraulic Jar for High Pressure and Super Deep Wells

短行程不压井起下作业装置

Short stroke snubbing unit

近年来随着欠平衡钻井技术的广泛应用和老井不断挖潜、开发，不压井起下钻作业的应用也越来越广泛。

In recent years , with the extensive application of underbalanced drilling technology and exploitation of depleted reservoir , snubbing operation became more and more general .

现有的通用卡瓦机构由于结构尺寸大、适应范围小等因素不能满足车载式不压井修井作业的结构与功能要求。

Because of the large dimension and the small adaptation range of existing slips , which can not meet the requirements of structure and function of vehicle-mounted pressure balancing workover rig .

还可以通过排气阀实现循环压井、洗井作业。

You can also cycle through the exhaust valve to achieve killing , flushing operation .

塔里木油田电泵井不压井不放喷作业技术

An operation technique without well killing and open flow of electric pumping wells in Tarim oil field

压井管汇通过向井内泵入压井液，实施压井作业，防止事故发生，保证安全生产。

The kill manifold is used for carrying out well-kick operations by pumping drilling fluid into the wells to prevent the accident and ensure production safety .

多级节流不仅能有效地提高节流系统的压井能力，还能改善节流阀的工况条件，增加了节流系统在压井过程中的可靠性，适合在高压高产油气层进行压井作业。

Multistage throttle way not only can effective improvement the ability of press the well of throttle manifold , can also improve the operating mode condition of the throttle valve and increase the dependability of multistage throttle system in the course of pressing the well .