Perforations In The Sub-layers Of Horizontal Wells Tapping The Potential And Design Method

Horizontal well technology is an important way to improve the recovery of oil and gasreservoirs in low permeability reservoirs, fractured reservoirs, oil sheet reservoir fault blockreservoirs,heavy oil reservoirs,gas cap and bottom water reservoir andconglomeratehorizontal oil wells in the reservoir can significantly increase the productioncapacity and improve reservoir development effect.Based on the current domestic and foreign technology status of horizontal wells, theapplicable horizontal wells mining reservoir should have a certain amount of geologicalfeatures,not all reservoirs are suitable for horizontal wells, horizontal well developmenttechnology applications have certain limitations, if the geological conditionsadapt improperapplication, may cause a negative effect, ineffective or inefficient. Therefore, intends to drill ahorizontal well development of the reservoir must be fully viable technology demonstrationand preferred.The starting point of this project to sequence stratigraphy and reservoir deposition theorybased on the guidance of the traditional flag layer control-Elevation principle-sedimentarycycle comparison based mode wears controlled trend tracking compared by means of. Tocarry out a single well profile oil sands deposited structure unit subdivision on the basis of asmall layer of fine-grained contrast between the well and the establishment of the finegeological model of the oil sands unit (including the physical parameters of the spatialdistribution profile prosody characteristics and internal mezzanine, fluid properties determinethe oil-water interface). The same time, the combination of the domestic like horizontal welldevelopment effects and test area has been the development of vertical wells and horizontalwells production effect analogy, horizontal well development feasibility study on this basis,to carry out the pilot area oil sands classification evaluation and optimization；； eventuallyworked out the technical boundaries of the reservoir the overall horizontal well developmentprogram and specific horizontal well development indicators,and horizontal welldevelopment effects analysis and risk prediction.Explore how effective development of the resources of the reserves of the top of thethick reservoir with horizontal wells, is the urgent need to address the research projects；demonstrated the feasibility of the project developed in the theoretical level of the test areawell, polymer flooding water Sa zoneHirai develop technical boundaries and method for theregion stable production, on production of great significance, also has an important role in guiding the research and application of horizontal wells across the field.Therefore, theresearch and application of a wide range of production requirements and market prospects ofthe project.