The Concept of Three-dimensional Development of Stacked Pay Pad for Shale Oil Horizontal Wells and Its Practice on Qingcheng Oilfield Platform
The development of continential shale oil is still at the starting stage in China,and the Qingcheng Oilfield has achieved the success of industrial-scale development of continental shale oil due to the practice of concept of three-dimensional development of stacked pay pad.In order to clarify the connotation,formation conditions and key role,according to the basis of sedimentary model and microseismic,the distribution of Chang 7 shale oil and contour of fractured network are described,and development effect of typical large platform is evaluated.And the results show that reservoir geological conditions and engineering fracture-forming ability are need to apply the concept of three-dimensional development of stacked pay pad.The characteristics of horizontal continuous distribution and vertical sand-mud interlayer of Chang 7 shale oil reservoir make source-reservoir integrated,and this leads to oil-bearing member spatially well developed.The cross-layer fracture network is high at the proximal borehole and squeezed at the distal borehole,and thus shows a baguette-like contour.For these geology and engineering reasons,the well pattern for three-dimensional development with"W"distributed horizontal wells can make reserves utilized for once.Thus,success for the development of large platform in Qingcheng Oilfield is achieved.At present,to increase the production and to carry forward revolution of continential shale oil,promoting the practice of the concept of three-dimensional development of stacked pay pad is significant.
shale oil of Chang7 Memberturbidity current depositionsuperimposed reservoircross-layer volume fracturingthree-dimensional development of stacked pay pad
NETL
NSTL
万方数据
