W10, Block The Distribution Of Remaining Oil And Hydraulic Fracturing Technology Research And Applications

Hydraulically fracturing is an important operation for low-permeability reservoir. The key for hydraulically fracturing is reservoir possesses enough resource and suitable technology is available. The paper bases on the theory of systemic project, gaining residual oil distribution by using the numerical simulation of reservoir. The paper bases on the date of reservoir, testing static Yang modulus and Poisson ratio in three-axial stress conditions as well as fracture conductivity of the proppants, optimizing the additive of water-base fracturing fluid and testing its characteristics. Researching the theory of optimum fracturing design, the paper bases on the NPV design the optimal fracture length and the optimal fracture conductivity. According to the numerical simulation set down hydraulically fracturing design for the single well. The main work are follows:1. By investigating the reservoir information and the supervisory date of fracture, the paper researches the in-situ stress distribution and tests the static Yang modulus and Poisson ratio in three-axial stress conditions on WeiCheng field;2. Basing on the achievements of drilling, logging, ore, perforation and production, the paper establish the three-dimension geologic model and form the space distribution model of reservoir rock and fluid, as well as analyzing and correcting production history data and pressure information of 34 production wells and 11 injection wells.3. Combining the reservoir description results and oilfield dynamic information, the paper simulates the reserve of the single sandstone and the whole W10 Block by using IMEX Simulator of CMG Company, as well as matching the production history data and pressure information of 34 production wells and 11 injection wells about 23 years.4. According to the results of reservoir simulation, the paper analyzes the space status, the reasons of formative type and distribution characteristics of residual oil.5. Researching and estimating the theology parameters and the filtration coefficient of gel fracturing fluid. Estimating the physical properties and the fracture conductivity of Yueyang , Yuanqu from Shanxi, Pangang, Gongyi and Zhengzhou.6. The paper researches the optimum design theories and methods of hydraulically fracturing for the single well, including establish the models of fracture three-dimension propagation, the temperature model in wellbore and the prediction mode of dynamic production for fracturing wells.7. The oilfield application based on the theory and technology.