RESEARCH ON CALCULATION METHOD OF STEAM ABSORPTION IN STEAM INJECTION THERMAL RECOVERYTECHNOLOGY

摘要

The world's heavy oil resources are very rich,and its geological reserves far exceed conventional crude oil reserves.Steam injection thermal recovery technology is widely used in heavy oil fields around the world,and steam absorption calculation is an important part of steam injection thermal recovery technology.In this paper,the test principle of the high-temperature five-parameter steam absorption profile tester is introduced in detail,and a calculation model for reservoir steam absorption is constructed.Finally,the wells in Kazakhstan have been used for calculation of steam absorption,and the interpretation results have been compared with actual production.The research results show that as the pipeline grows,the heat loss gradually increases,and the dryness decreases to a large extent.When it reaches the wellhead,the dryness is only 57%.This is mainly due to the serious heat loss caused by the excessively long pipeline,which has a great influence on the steam injection effect.The calculation error of the vapor absorption percentage of the oil layer is within 5%,and the calculation result of the vapor absorption percentage is consistent with the on-site interpretation result.The interpretation conclusion verifies the reliability of the method in this paper.