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首页> 外文会议>Technical papers for 2010 CNPC international wellbore technology seminar. >The Deep Penetrating Perforation Technology of Multistage Pulse
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The Deep Penetrating Perforation Technology of Multistage Pulse

机译：多级脉冲深穿透射孔技术

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摘要

The deep penetrating perforation technology of multistage pulse is a new technique of the 21st century. It's the effective combination of the jet perforating technology and propellants fracturing technology, one -stop perforating operation can accomplish three -level functions. First jet perforating and then twice propellants fracturing, in turn, it can improve greatly the efficiency of perforating, the efficiency of propellants fracturing and the oil productivity ratio. It has three kinds of peculiarities:first, it can assemble one -stage jet charge and two -stage propellants in one perforator, it can load more propellants than the traditional compound perforation. Second, using the burning rate difference of the explosives, by means of controlling the rising rate, peak and duration of pressure which pro duced by two -stage propellants burning in turn, the multistage pressure pulses can act to formation dynamically and repeatedly. Third, the jet perforating produces perforating tunnels. The burning of two -stage propellants in turn produces a mass of high temperature and high pressure gas, the gas enters perforating tunnels by the shortest trip with the well fluid. It takes mechanical, physical, chemical and thermodynamical effects to near -wellbore for mation, breaking the crushed zone, producing many radial fissures around the perforating tunnel, linking up the natural cracks, penetrating the damage zone deeply, improving the flow conductivity of near -wellbore, increasing the oil productivity ratio of well at last. By the using of 160 wells, it proves that the using of multistage -pulse deep penetrating perforating technology can improve the oil productivity ratio in producing wells, and reduce the loss of oil layer in exploratory wells. It' s safe and reliable by many experiments and applications.
机译：多级脉冲的深层穿透射孔技术是21世纪的一项新技术。它是射流射孔技术与推进剂压裂技术的有效结合，一站式射孔作业可实现三级功能。先射流射孔，然后两次推进剂压裂，依次可以大大提高射孔效率，推进剂压裂效率和产油率。它具有三种特点：首先，它可以在一个射孔器中组装一级射流装药和二级推进剂，与传统的复合射孔相比，它可以装载更多的推进剂。其次，利用炸药的燃烧速率差，通过控制由两级推进剂依次燃烧产生的上升速率，压力峰值和持续时间，多级压力脉冲可以动态重复地作用。第三，射流射孔产生射孔隧道。两级推进剂的燃烧又产生大量的高温高压气体，该气体以最短的井眼行程进入射孔隧道。它需要对近井眼进行机械，物理，化学和热力学作用来进行测量，破坏压裂区，在射孔隧道周围产生许多径向裂缝，连接自然裂缝，深深穿透损坏区，从而改善近井的流导率。井筒，最终提高了油井的产油率。通过160口井的使用，证明了多级脉冲深穿透射孔技术的使用可以提高生产井的产油率，减少探井的油层损失。通过许多实验和应用，它是安全可靠的。

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