Experimental Study On Horizontal Well Development In The 54 Block Of Surig Gas Field

Sulige gas field is located in the northern part of the Ordos Basin, the surface is mainly covered by desert, gas reservoir mainly controlled near the north and south to the distribution of large rivers, delta sand body with is typical lithologic gas reservoir, gas is composed of a plurality of single sandbody horizontal composite laminated structure formed, belongs to a low porosity, low permeability, low production and low abundance of large-scale tight sandstone gas reservoir. Su 54 block is located in the West Sulige gas field, after pre evaluation argumentation, test analysis and evaluation, 2014 completion 6.0 x 108m3/a capacity and the scale of the development, later to make up for the decline of new capacity, and design the stable production period of 20 years. This block is dense and water production is complex, and it is very difficult to make up the production. It is necessary to combine the regional geological conditions, optimize the geological conditions, optimize the geological target, develop the technology parameters and design.This paper studies the relationship between geological features and sedimentary facies,and the distribution law of effective sand bodies in Su 54 block. The feasibility of the overall development of horizontal wells is demonstrated, and the distribution range of favorable horizontal wells is studied. A low permeability sandstone reservoir evaluation technique and the optimization technique of gathering and transportation pipeline network are used to demonstrate the development of horizontal well in 54 blocks.