Abstract: Moshen-1 Well is a key well for scientific probe of CNPC, with completion depth of 7 500 m. This well is characterized by deep drilling horizon and varied formation lithology, so its successful drilling and completion played an important role to understand deep pressure distribution in Mosuowan area. This paper presents the characteristics of vertical and transverse formation pressure in Wellblock Moshen-1, and based on 3D seismic data constrained inversion by well logging, obtains 3D interval velocity. Finally, by taking advantage of Bowers method, 3D pressure in this area is gained. The correlation of seismic interval velocity from Moshen-1 Well and Pencan-2 Well with sonic logging velocity is made, and the more consistent results show that the 3D pressure can well reflect the pressure distribution in this area.

Key words: Junggar basin, Moshen-1 Well, interval velocity, logging constrained inversion, 3D seismic data, formation pressure