Teaching focuses Three basic forms of percolation, the production formula and pressure distribution condition of planar one-dimensional and radial steady state percolation of single-phase incompressible fluid concept of skin factor, continuing equation of single-phase fluid percolation, the basic differential equation of single-phase compressible fluid percolation and the basic differential equation and its solution of single-phase incompressible fluid percolation eac c hing difficulties The production formula and pressure distribution condition of planar radial steady state percolation of single-phase incompressible fluid, continuing equation of single-phase fluid percolation, the basic differential equation of single-phase compressible fluid percolation and the basic differential equation and its solution of single-phase incompressible fluid percolation Chapter 3 Interference theory of oil wells under rigid water drive The basic contents and requirement (1) Interference of wells, the superposition principle of pressure drop, the superposition principle of otential, the relationship between flow velocity and the potential function (2) The method of mirror: Interference of uniform-intensity one source and one sink--the source- sink image method, the interference of two sinks equal in intensity--sink point image method, popularization and application of mirror image method in the reservoir of complex boundary Teaching focuses Interference of wells, the superposition principle of potential, the method of mirror Teaching difficulties The superposition principle of potential, the method of mirror Chapter 4 Unsteady state percolation of slightly compressible fluid The basic contents and requirements: (1) Pressure transmission process and pressure distribution curve when the well product with onstant flow rate or constant bottom hole pressure under the condition of constant pressure boundary or closed bounda (2)The planar one-dimensional unsteady state percolation in semi-infinite formation and elastic fluid unsteady state percolation towards one well in infinite formation. Characteristics and the production and pressure distribution formula of pseudo-steady state percolation and the lination the ending time of unsteady state transient period ()Multi interference of wells of elastic unsteady state percolation, superposition principle of pressure drop, the image method in formation with linear boundary and Duhamel principle solving the problem of changing production (4)Unsteady state well testing analysis, the pressure fall-off test and pressure build-up test Teaching focuses: The planar one-dimensional unsteady state percolation in semi-infinite formation and elastic fluid unsteady state percolation towards one well in infinite formation Characteristics and the production and pressure distribution formula of pseudo-steady state percolation towards well in finite closed elastic formation. Multi interference of wells of elastic unsteady state percolation, superposition principle of pressure drop, the image method in formation with linear boundary and Duhamel principle solving the problem of changing production. The pressure fall-off test and pressure build-up test Teaching difficulties: The planar one-dimensional unsteady state percolation in semi-infinite formation and elastic fluid unsteady state percolation towards one well in infinite formation. Duhamel principle solving the problem of changing production. The pressure fall-off test and pressure build-up test Chapter 5 Percolation law of natural gas The basic contents and requirements (1)Properties of natural gas: Equation of state of gas, compressibility and the standard condition of natural gas. The basic differential equation of gas percolation, the concept and calculation of pseudo-pressure and pseudo-time state percolation of gas. The distribution formula of pseudo-pressure and the production