  Dual-Primal Finite Element Tearing and Interconnecting (FETI-DP) algorithms
are developed for a 2D Biot model. The model is formulated with mixed-finite
elements as a saddle-point problem. The displacement $\mathbf{u}$ and the Darcy
flux flow $\mathbf{z}$ are represented with $P_1$ piecewise continuous elements
and pore-pressure $p$ with $P_0$ piecewise constant elements, {\it i.e.},
overall three fields with a stabilizing term. We have tested the functionality
of FETI-DP with Dirichlet preconditioners. Numerical experiments show a
signature of scalability of the resulting parallel algorithm in the
compressible elasticity with permeable Darcy flow as well as almost
incompressible elasticity.
