Study and application of horizontal well optimization design in Tuha oilfield

The optimized designs are preformed in the well pat-tern,and the direction,horizontal section and vertical posi tion of horizontal well by the agency of theoretical study and numeral stimulation.On the basis of fine reservoir descrip tion and by combining the geological character of reservoir,all geological parameters are optimized to obtain a optimiza-tion design.Through the optimization design of horizontal well,the performance of horizontal well in all kinds of reser-voirs is good in effect and a success ratio is high.The drill ing results of horizontal well are primarily correspondent with geological cognitions.