共查询到17条相似文献,搜索用时 93 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
水平井固井质量评价资料为压裂等储层增产改造方案的制定提供支持,在水平井段,扇区水泥胶结测井仪器重力作用存在向下偏心现象,导致测井响应值偏低、解释偏差大。针对这一问题,研究偏心模型下井孔声场分布,明确了偏心距与套管波幅度间的关系;分析测井声系空间排布特点,利用八扇区到时、幅度反演仪器偏心程度;形成了适用于扇区水泥胶结测井的水平井固井质量评价偏心校正技术。该技术在南272-平××井等81口水平井中应用,测井解释结果的准确性得到提高。 相似文献
9.
10.
本文通过对比研究压裂作业前后水泥胶结测井资料,揭示了压裂对水泥环所造成的破坏程度:根据压裂前后胶结测井资料给出的胶结指数(BI值)、八扇区胶结图象以及变密度图象的变化特征,剖析了压裂作业对于固井胶结质量的影响规律,这无疑会进一步促进压裂作业的优化设计。研究表明:压裂作业不仅使得压裂层段本身固井胶结质量趋向变差,而且会对其邻层水泥环也造成一定程度造成破坏;压裂作业增大了层间窜槽的可能性和危险性;油水井固井胶结质量差的层段比固井质量好的层段更容易受到压裂破坏。 相似文献
11.
12.
13.
14.
15.
H. M. Firoozabadi K. Rahimzade P. Pourafshary M. Edalat 《Petroleum Science and Technology》2013,31(16):1722-1732
Abstract Accurate prediction of pressure drop in perforated wells with a high fluid flow rate is a challenge in production engineering calculations. In this study, production logging data obtained from an Iranian gas condensate field were analyzed to develop a model to predict the pressure drop in perforated wells. To calculate the pressure drop due to the friction in the perforated section of the wall, a relation between perforation friction factor, pipe and wall Reynolds number, and Moody friction factor was developed by means of nonlinear regression. Perforation effects were also considered in total pressure drop, which occur due to the mixing of axial and radial momentum fluxes in the perforated section. The results predicted by our developed model showed good agreement with the measured production logging data from the studied field within 14% error. This model can be used to accurately estimate the well performance curve. 相似文献
16.