影响大型酸压储层改造效果的主要因素分析

Main factors influencing reformation effects of massive acid fracturing reservoir

程洪 任文博 张玉婵 甄建伟

Cheng Hong Ren Wenbo Zhang Yuchan Zhen Jianwe

中国石化 西北油田分公司 塔河采油三厂,新疆 轮台 841605

No.3 Tahe Production Plant,SINOPEC Northwest Company,Luntai,Xinjiang 841605,China

塔河油田碳酸盐岩缝洞型油藏储集空间复杂,70%的油井需要酸压建产,部分油井因埋藏深、地温高,原有的酸压规模小,裂缝穿透距离有限,不能有效沟通储集体,导致油井供液不足,低产低效。通过对已实施油井分析研究得出影响大型酸压效果的主要因素为(1)油井所处井区油气富集程度;(2)油井控制区域储集体发育程度;(3)前期酸压沟通储集体状况;(4)压裂施工规模及参数。

Fractured-vuggy carbonate reservoirs in the Tahe Oil Field are complicated.Acid fracturingis required in 70%of the wells.In some wells with deep burial depth and high formation temperature,the former acid fracturing failed to connect reservoir effectively since fractures had not penetratedenough far away,resulting in feeding-flow lack,low yield and inefficient.Main factors influencingreformation effects of massive acid fracturing reservoir have been concluded as follows:a)Petroleumenrichment extent of the region where wells locate;b) Reservoir generation degree of the well-control-ling region;c) Reservoir connection condition after the former acid fracturing;d) Scale and parametersof acid fracturing.

https://doi.org/10.11781/sysydz2011S1107