第四段：射孔段间隔伸长、压缩活动段。
The fourth section: interval elongation and compression activity section on the perforation layer.
根据对油田套管损坏情况的分析，发现大多数套管损坏部位在射孔段。
According to the analysis about the failure of casing in oil region, most damages occur on the perforated interval.
为了核实清洗效果，可以采用更低的压力对射孔段进行由底向顶的重复冲洗。
To verify the washing effectiveness, the perforated area was then washed a second time, now from bottom to top, and at a much lower pressure.
油井射孔段天然缝产状、发育程度、水平应力大小直接影响着压裂施工压力。
Strike - dip, development degree and horizontal stress of the natural fracture in oil well perforated intervals affects operated fracturing pressure directly.
建立了射孔段套管弹性抗挤性能分析控制一般方程，并采用摄动理论给出了的孔段套管弹性抗挤能力降低系数一般计算公式。
This paper gives the elastic differential equation of collapse of perforated casing, and a general formula for reduction factor of elastic collapsing by perturbation method.
衬管补贴工艺技术能实现对射孔井段、套损部位的有效补贴，延长油(水)井开发生产的周期。
The technology of liner subsidy is effectively done to perforated parts and destroyed casing which can prolong the period of the water and oil Wells for production.
在解决循环漏失问题时，由絮片材料或纤维材料配制的堵漏小段塞被设计用于封堵射孔孔眼或漏失流体的层段。
In counteracting lost-circulation problems, a lost-circulation pill prepared with flaked or fibrous material is designed to plug the perforations or formation interval losing the fluid.
一种完井结构，其中的生产套管柱下过储层层段并经射孔，以便在地层与井筒之间能够连通。
A completion configuration in which a production casing string is set across the reservoir interval and perforated to allow communication between the formation and wellbore.
本文针对磨溪嘉二气藏射孔后酸化情况，采用试井分析技术，对嘉二为目的层的井区试气工程资料进行了解释，评价了该层段井的酸化效果。
The paper evaluates acidizing effect of tested zone by using well testing analysis tech to interpret engineering data after perforation is conducted to Moxi jia2 gas reservoir.
水平井射孔井段的井眼附近若有泥质夹层，无疑对水平井提高采收率是很不利的。
If there is a shale sandwich near wellbore in horizontal well logging, it is harmful to promote production rate.
置于任一射孔层段的一段厚壁油管，这时生产油管必须通过此射孔层段，如在多层完井中所要求的。
A section of heavy walled tubing that is placed across any perforated interval through which the production tubing must pass, such as may be required in multiple zone completions.
最后应用储层建模技术，依据射孔层段处于油层中的位置，优选设计射孔相位角。
Finally, reservoir modeling technique is applied to optimize the design of perforation phase Angle according to the position of the perforation interval in the oil layer.
射孔井段长，射孔枪在水平井段震动大，可能发生卡钻事故。
The perforated interval is long and perforating gun is in much vibration at horizontal section, which may cause pipe sticking accident.
置于井筒中要被射孔层段的酸处理液。
An acid treatment placed in the wellbore over the interval to be perforated.
射孔簇效率描述的是在一定长度的井段中经过增产措施后有效的射孔簇的比例。
Cluster efficiency describes the percentage of clusters that receives effective stimulation for a given interval.
射孔簇效率描述的是在一定长度的井段中经过增产措施后有效的射孔簇的比例。
Cluster efficiency describes the percentage of clusters that receives effective stimulation for a given interval.
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