Double Eye Multi-branch Horizontal Wells In The Application Of The Buried Hill

Double eye multi-branch horizontal well drilling technology is the use of a wellhead casing window again,form two main hole,and each main hole drill again several branches of a comprehensive drilling technology 。 In the oil and gas field development, double eye multi-branch horizontal well compared with ordinary horizontal Wells,The former has more advantages:Increase the contact area of reservoir,improve the low permeability reservoir recovery efficiency,thus the residual oil full capacity,reduce the occupied area,at the same time in the better use of energy storage to save the cost of oilfield development.In this article,through practical analysis and studies the characteristics of the buried hill formation,to optimize the structure of well depth and section;casing window technique、Dangling sidetracking technology and a series of technologies of drilling difficulties,New technology of making 、 new technology can be applied to the experimental practice combining, improve the drilling technique in the actual application.Through the use of advanced scientific theory to guide the work,Changed the old idea to conventional drilling,In the actual full affirmation.A lot of successful experience is obtained by the actual site construction:Through the optimization of well bore structure, drilling speed can be greatly improved,shorten the drilling cycle,Greatly reduce the drilling cost and collapse,sticking,such as drilling leakage risk;On the choice of casing window way and location,and oblique guide to put way to achieve the most appropriate choice;The location of the impending sidetrack sidetracking,drill bit type and size,screw ontology,centralizer and degree choose received the affirmation in practice, dangling sidetracking technology for operation in practice can be more consolidated and developed.