The application of the slight structure in the southern eight districts of Sanan oilfield

Micro-off ditch: Similar to the micro-off nose of tectonic origin, caused mainly due to uneven force on both sides of the fault. Generated concave in the downthrown settlement faster part of the formation of micro-off ditch; disk on the rise due to the uneven drag force, the drag force strong at relatively concave form micro-off ditch.