离散裂缝模型国外英文课件Discrete_Fracture_Network_(DFN)-1

1、Complex Fracture Scenarios (SPE 114173) (SPE 119890) Discrete Fracture Network (DFN) Model(SPE 115769) Proppant Transport ScenariosDiscrete Fracture Network (DFN) Model(SPE 115769)Discrete Fracture Network ModelMajor Axis Vertical Fractures (x-z plane)Discrete Fracture Network (DFN) ModelMinor AxisV

2、ertical Fractures (y-z plane)Vertical AxisHorizontal Fractures (x-y plane)Discrete Fracture Network ModelMajor AssumptionsDominant or primary fractureSecondary fractures initiate when principle planes (propagate perpendicular to minimum stress) discrete (saturated or unsaturated)Ignore interfacial j

3、oint dilatancyInclude fracture interactionStimulated Reservoir Volume - EllipsoidalDiscrete Fracture Network (DFN) ModelGoverning Equations Principle AxesContinuity EquationMass ConservationMomentum Conservation Width-Opening PressureDiscrete Fracture Network (DFN) ModelMass Conservation EquationsDi

4、screte Fracture Network (DFN) ModelMomentum Equations Principle AxesLaminar FlowDiscrete Fracture Network (DFN) ModelMomentum Equations Principle AxesLaminar FlowTurbulent FlowDiscrete Fracture Network (DFN) ModelInteraction Factors DFNFluid LossStiffnessFlow RateDiscrete Fracture Network (DFN) Mode

5、lElastic Interaction FactorDiscrete Fracture Network (DFN) ModelNet Pressure Ratio for Multiple FracturesDiscrete Fracture Network (DFN) ModelProppant DistributionPrimary FractureSecondary FracturesDominantUniformDiscrete Fracture Network (DFN) ModelDiscrete Fracture Types x-z plane self-similar sat

6、urated interaction principle planes spacing; dx,dy,dz saturated unsaturated aperture ratio interaction principle planes spacing; dx,dy,dz saturated unsaturated continuum/discontinuous interactionDiscrete Fracture Network (DFN) ModelMarcellus DFN (5 Cluster)Marcellus Payne DFN (5 Cluster)(Top View)Di

7、screte Fracture Network (DFN) ModelMarcellus Shale (Ex. 1) MicroseismicMarcellus Shale Ex. 1 (Single Cluster)Discrete Fracture Network (DFN) ModelMarcellus Shale Ex. 1Discrete Fracture Network (DFN) ModelMarcellus Shale Ex. 1Discrete Fracture Network (DFN) ModelMarcellus Shale Ex. 1Discrete Fracture

8、 Network (DFN) ModelProduction Model for DFNDiscrete Fracture Network (DFN) ModelMultiple Transverse Fractures InterferenceConclusions DFN may occur if Secondary Fractures Open DFN vs. a Conventional Bi-Wing Fracture DFN Fracture Length is Shorter Stimulated Reservoir Volume is Greater Proppant Distribution can