Design and application of super-short radius side-tracking technology in SHU1-23-0370CH multilateral horizontal well

SHU1-23-0370CH well is the first super-short radius side-tracking well in Liaohe Oilfield,the purpose of this design and construction is to improve the production of old wells.According to oil reservoir characteristics and requirements of oil production,wellbore structure,borehole trajectory,drilling parameters and the steps of the construction in SHU1-23-0370CH well are optimized.The maximum dogleg of design side-tracking well is 18.62(°)/m,the length from window-cutting to horizontal drilling is 5.7 m.Using flexible drill string and jet drill string assembly,building section and horizontal drilling are fulfilled.Using the screen tubing and jet drill string,drilling and well completion are realized at the same time.The design and application of SHU1-23-0370CH well is successful, this success shows that super-short radius side-tracking multilateral horizontal well is significant to Liaohe Oilfield in future.