压裂液体系优化研究方法探讨  

OPTIMIZATION METHOD OF FRACTURING FLUID SYSTEM

作　　者：柴巧玲[1] 李志航[1] 潘新伟[1] 

机构地区：[1]长庆石油勘探局工程技术研究院

出　　处：《钻采工艺》2007年第3期118-120,130,共4页Drilling & Production Technology

摘　　要：压裂液的粘度与其在井筒和裂缝中的温度以及泵送过程(泵送排量、距离、时间等)有关。液体在井筒和裂缝中的剪切速率与温度都是不同的,液体经历高速率剪切的时间长短不同,对液体的最终粘度造成的影响也不同,室内实验应考虑到井筒中高速率剪切对压裂液粘度的影响,模拟现场不同施工阶段进行液体性能评价,以便更真实地预测施工过程中液体粘度的变化,使液体满足现场施工要求。并且可以通过改变压裂液组份、采用双交联剂体系等使液体体系进一步得到优化。The viscosity of fracturing fluid is related to fluid temperature and pumping process (i.e. rate,volume,distance,etc.) in the wellbore and fracture. The shear rate and temperature of the fluid in the wellbore and fracture is different,the depth of wellbore and the length of time that the fluid withstands specific shear rate are important to its final viscosity. During the process of developing a fluid database,ignoring the wellbore shear rate can lead to unrealistically high viscosity. During test, in order to predict the actual viscosity of fracturing fluid and meet the request of field operation, the fluid performance was evaluated by simulating the in-suit temperature and shear rate in different construction stage. Mainwhile, the fracturing fluid system was optimized by changing the composition of fracturing fluid and using double crosslinker.

关 键 词：压裂液 高速率剪切 粘度 双交联剂 优化 

分 类 号：TE357[石油与天然气工程—油气田开发工程]