缝洞型碳酸盐岩储层重复酸压改造技术研究与实践  

Research and Application of Re-Fracturing Acid Technology for Fractured Vuggy Carbonate Reservoir

作　　者：刘辉[1] 袁学芳[1] 刘豇瑜[1] 任登峰[1] 吴红军[1] 

机构地区：[1]塔里木油田分公司油气工程研究院,新疆库尔勒841000

出　　处：《油气井测试》2017年第1期63-66,共4页Well Testing

摘　　要：塔里木盆地A区碳酸盐岩油藏新井初次酸压后表现为干层或不定性的无效井占比近20%。通过酸压失利因素分析,开展重复酸压可行性研究,提出加大施工规模延伸老裂缝、转向酸压造新缝及携砂酸压提高导流能力三种重复改造技术思路。研究实践表明,针对性的转向工艺可取得较好的效果,携砂酸压相比非携砂工艺有增加导流能力的优势,但对于缝洞型储层,初次较大规模酸压明显沟通储集体的井,不建议同层段等规模重复改造,采用携砂重复改造工艺的可行性也有待进一步的研究论证。The proportion of failure wells that performance dry layers or non reservoirs is nearly 20% after the first acid fracturing in A block carbonate reservoirs of Tarim basin. By analysis of the failure factors,the feasibility study of re-fracturing acid has been carried out. Three ideas of acid fracturing technical have been proposed that are increasing the scale of acid fracturing to extend old fractures,diverting refracturing to make new fracture and acid fracturing with proppant. Research and practice shows that the targeted diverting process can achieve better results,and the process with proppant can increase conductivity of fracture compared to non carrying sand process. But to the fractured vuggy carbonate reservoir,it's not be recommend to repeat fracturing with the same scale if the reservoir has been touched on obviously at the first scaled acid fracturing,and the feasibility of acid fracturing with proppant progress to the fractured vuggy carbonate reservoir needs to be research further.

关 键 词：塔里木盆地 碳酸盐岩油藏 重复酸压 导流能力 

分 类 号：TE357[石油与天然气工程—油气田开发工程]