Application of drilling high-inclination cluster wells in Ledong 22-1 Gas Field

Because the well slot on offshore platform is limited, in order to increase the ultimate recovery, high-inclination cluster wells were used widely, so the development difficulty increased. By the real application of drilling the cluster and high angle well in Le Dong22-1gas field, it were analyzed that the techniques of well diagram and well structure design, well track control, wellbore stability and well cleaning processing, and the technical characteristics and experience of drilling high-inclination cluster wells were summed up. Meanwhile, a noval method of drilling high-inclination cluster wells was studied with good effect, which could be viewed as a good example for the same type of field.