Research And Application On Improving The Recovery Effect Of Super Viscous Oil Horizontal Well Technology

At present, most conventional oil and gas fields on the land around the world are in later stage. As the conventional oil reserves growth restriction, exploitation of viscous oil reservoir is more important. As a drilling and oil recovery technique with advanced features, horizontal well has special important significance for oilfield development and play an important role in the production.Along with the development of horizontal scale,some new problems in the production are gradually exposed too, the production of horizontal well decline gradually.Horizontal section of the use of uneven phenomenon, local dash, horizontal section of the steam capacity loss, affect the development effect;Near the wellbore of heavy oil exploitation process, the seepage area is small, pressure drop quickly, within the wellbore of heavy oil flow resistance is big, which can affect the output of heavy oil Wells,etc,By adopting the latest technology means,constantly improving and innovating the horizontal well technology,gain a huge success.Achieved the purpose of using horizontal well efficiently develop ultra heavy oil reservoir.Meanwhile,through the study of these problems, also deepened the understanding of ultra heavy oil features,To maintain the stability of crude oil output and growth has very important significance.