CAJ | 학술논문

南泥湾地区储集层主要为延长组长4＋5、长6段为致密岩性油藏,且低压低渗。为了提高射孔的效率,应采用高性能射孔枪弹进行穿透射孔。通过大量现场实验,分析孔深、孔径、孔密、相位角等射孔参数对产率比的影响,从而优选出最佳孔深、孔径、孔密、相位角,并在此基础上,优选射孔枪弹,优化射孔参数组合,最终为致密岩性油藏提出合理的射孔工艺。
남니만지구저집층주요위연장조장4＋5、장6단위치밀암성유장,차저압저삼。위료제고사공적효솔,응채용고성능사공창탄진행천투사공。통과대량현장실험,분석공심、공경、공밀、상위각등사공삼수대산솔비적영향,종이우선출최가공심、공경、공밀、상위각,병재차기출상,우선사공창탄,우화사공삼수조합,최종위치밀암성유장제출합리적사공공예。
The main reservoir of Nanniwan area is tight lithologic reservoir of Chang4＋5 and Chang6 with the characteristics of low-pressure and low-permeability. For more efficient perforation, high-performance bullets should be applied. Through analyzing the productivity ratio under different perforation parameters based on abundant field experiments such as hole depth, hole diameter, hole density and phase angle, this paper provides the best parameters mentioned above, moreover optimizes perforation bullets and perforation parameters, finally proposes a rational perforation craft for tight lithologic reservoir.