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The Research on Well Pattern Optimization about Fractured Low Permeability Sand-Gravel Reservoir

Author: SunXiaoFei
Tutor: ZhangYanYu
School: China University of Petroleum
Course: Oil and Gas Field Development Project
Keywords: Glutenite reservoir Stochastic modeling Numerical reservoir simulation Crack Discrete fracture networks
CLC: TE324
Type: Master's thesis
Year: 2011
Downloads: 188
Quote: 0
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Abstract


Fractured low permeability sandy conglomerate reservoir generally rich sedimentary type , reservoir properties , micro- fracture development complex characteristics , how to improve the effect of the development of such a reservoir has become today 's accepted technical problems . Salt oilfield waterflood field trial network to carry out an anti- nine wells since 2007 has been due to the presence of inappropriate development well , well spacing , fracture development , so the block well group effective is not obvious . Therefore, the search for the optimal well pattern suitable for the type of reservoir is of great significance to improve the block RECOVERY . Study full advantage of previous research and understanding of the reservoir , from the in-depth analysis of the geological characteristics of the block to start with the production of dynamic data structure established by a combination of deterministic and stochastic modeling methods , the sedimentary microfacies ( rock phase ) , matrix properties fine geological model . In order to consider the impact of the cracks in the system reservoir development decisions based on first to the salts 22-22 wells imaging logging, core observation data to establish the conventional logging the the curve low permeability glutenite cracks response characteristics , combined with Quickprop neural network algorithm eventually get cracks vertical development wells paragraph ; applied after the the principal curvature predicted salt 22 blocks the crack plane developmental area . Finally , based on the above crack Characterization and description of the work , combined the professional crack modeling software fraca , and petrel technical characteristics , the use of statistical methods to establish a discrete fracture network model , the model by statistical methods (Oda) roughening has been the cracks required properties of dual media reservoir model parameter model . Taking into account the percolation characteristics of the block , with dual media model history matching adjusted by means of numerical reservoir simulation methods , research analysis of the block Remaining Oil Distribution and control factors . On this basis , select the typical wells the group factors fractured low permeability reservoir development in sandy conglomerate reservoir reservoir conditions , water injection well pattern , injection -production ratio of detailed study and analysis . Finally, existing well network in the form of 22 blocks of salt , combined with impact factors research the forecast through program development indicators and economic evaluation , network optimization program of the block well .

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CLC: > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Design and calculation of oil and gas field development > Principles and methods of oil field well spacing
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