Combining and applying data of geological, seismic, onsite LWD, mud logging, directional drilling and drilling, provide evidence in geology and reservoir for decision making in development wells, decrease the landing risk in horizontal well drilling, raise the rate of drilling in the horizontal target zones, and lower the drilling risks from the uncertainty in well design. (subsurface geological structures varying and hydrocarbon zones moving). Meanwhile, help on quick and timely judgement and decision-making, to reduce any unnecessary circulations, make a timely decision on intermediate TD (landing) and final TD to assist to increase the operation efficiency and lower the cost.