CAJ | 학술논문

为有效解决多层系开发过程中笼统合采油井层间干扰矛盾，最大程度发挥各层产能，研制了防气式分采泵两层分采主体技术，现场应用效果显著，但无法实现油井三层以上分采。在油井两层分采技术原理基础上，提出了“产层单向过流进入油管、油管内层间产液桥式多级过流、封隔器层间封隔、普通抽油泵举升”三层分采技术思路，通过对单流阀结构的改进，研制形成双通桥式流道、阀球扶正单向流道结构特点的桥式分采器，设计了“桥式分采器+Y211封隔器+Y111封隔器+普通管式抽油泵”三层分采技术管柱。2013年在长庆油田首次成功开展2口井现场试验，效果明显，为长庆油田多层系开发区块油井多层分采提供了新的技术手段。
위유효해결다층계개발과정중롱통합채유정층간간우모순，최대정도발휘각층산능，연제료방기식분채빙량층분채주체기술，현장응용효과현저，단무법실현유정삼층이상분채。재유정량층분채기술원리기출상，제출료“산층단향과류진입유관、유관내층간산액교식다급과류、봉격기층간봉격、보통추유빙거승”삼층분채기술사로，통과대단류벌결구적개진，연제형성쌍통교식류도、벌구부정단향류도결구특점적교식분채기，설계료“교식분채기+Y211봉격기+Y111봉격기+보통관식추유빙”삼층분채기술관주。2013년재장경유전수차성공개전2구정현장시험，효과명현，위장경유전다층계개발구괴유정다층분채제공료신적기술수단。
To effectively solve the interlayer interference in comingled producing wells during development of multi-layer system and to maximize the production capacity of each layer, we have developed a double-layer separate producing technology is developed with gas-proof selective producing pump, which works very effectively on site, but it cannot separately produce more than 3 layers. Based on double-layer separate producing principle, we presented a concept of three-layer separate producing tech-nology 'the producing pay overlfowing one-way into tubing, interlayer produced liquid in the tubing overlfowing in the form of bridge multi-stage, isolating the layers with packers and lifting by ordinary pumping unit'. By improving the check valve structure, a bridge-type separate-zone producing device is develope with a structure of 'two-way bridge lfow channel, and valve ball cen-tralizer one-way lfow channel', and designed three-layer separately producing technological string of 'bridge-type separate-zone producing device+Y211 packer+Y111 packer+ordinary tubing pump'. In 2013, the technology was used in two wells in Changqing Oilifeld for the ifrst time and worked very well, providing a new technical manner for multi-layer selective producing in wells in multi-layer development zones of Changqing Oilifeld.