Research And Application Of Super Heavy Oil Horizontal Well Layered Development Technology In Liaohe Oil Field

Super heavy oil reservoir of Liaohe Oilfield are mainly concentrated in block Du 84, Du 229 block, Liaohe oil field is the "Twelfth Five Year Plan" period to maintain stable production of the main block. The reservoir in the early ninety’s by way of steam stimulation development of industrialization exploitation, after ten years of development and production, has reached the scale of 2900000 tons. With the constant development of in-depth, steam stimulation development have become increasingly prominent. Block Du 84, Du 229 block is a thick, multilayered super heavy oil reservoir, since 1997 has started using 2 sets of layer series of development, 70~100m square well spacing of vertical well steam stimulation development. That years of development practice, only rely on the development of vertical wells has been unable to meet the needs of reservoir development.With the wide application of horizontal well, in view of interbedded reservoir wells, the interlayer potential, development of super heavy oil horizontal well development technology of layered, establish a diversified layering development mode. According to the reservoir conditions of different horizontal wells, determine the reasonable deployment of economic technical limitation, the deployment of the single sand body of the horizontal well and the wear layer of horizontal well, optimization design of horizontal well trajectory, improve the relevant supporting technologies, ensure that the reservoir horizontal well drilling rate, ensure the normal production of horizontal wells, and achieve better development effect. Horizontal well can improve the oil recovery rate of hierarchical development of about 0.5% ~ 0.8%, and achieved good economic benefits, but also has the guidance and reference for other similar reservoir development.