Integrated horizontal well geosteering method

The invention discloses an integrated horizontal well geosteering method. The integrated horizontal well geosteering method includes the steps of establishing a precise three-dimensional geologic model by geologic data, well logging data, well measuring data and geophysical prospecting data before drilling; designing a three-dimensional track according to a stratigraphic dip and reservoir stratum properties extracted from the three-dimensional model; during drilling, guaranteeing accurate landing and continuously revising the geologic model via tracking while-drilling records and controlling the track; during target drilling, according to combination between while-drilling well recording, while-drilling well measurement combined geological research, seismic interpretation, drilling technology, horizontal well controlling technology, performing while-drilling tracking and explanation evaluation, immediately regulating and forecasting next steps in a horizontal well construction scheme, and realizing field and