Homogeneous Steam Injection Technology In Horizontal Wells

This paper takes the heave 37 well area of fengcheng oilfield of xinjiang oilfield as an example to study the uniform steam injection process of SAGD horizontal well carried out by using the experimental application object in the resection.In the process of development of heavy oil horizontal well,at first the field used single injection point with the mode of "auxiliary steam injection,supervisor pumping",resulting in uneven gas injection in horizontal Wells.After that,the steam injection point was increased to two,and the output was slightly improved but not up to the expectation.By referring to the research technology of other oil fields at home and abroad,It is found that the number of steam points in the horizontal well and the area of each outlet are the important factors that influence the degree of absorption.The crude oil in the target well area is heavy oil or super heavy oil,and the mining method is mainly steam stimulation and SAGD process.Since 2010,attempts to under conventional horizontal well and using SAGD well horizontal section into several sub steam injection way to achieve horizontal uniform steam injection,but due to the complexity of thermal recovery Wells well conditions and reservoir physical properties,ultimately unable to realize uniform steam injection.Based on the research abroad uniform steam injection technology,draw lessons from halliburton intelligent regulation uniform steam injection technology research and development,according to the actual situation of oil field goal wellblock and the need of actual production,using reservoir numerical simulation method,the well parameters for the model calculation,and is verified by designing procedure,it is concluded that steam injection point location can be identified by number,opening,steam injection parameters such as hole area to optimize the effect of steam injection process.The completion and application of this process will improve the development of most heavy oil steam injection Wells in xinjiang oilfield.