Research Of Gas Reservoir Development Technology Countermeasures In Su14Block3D Test Area

Sulige gas field, a large gas field found in China, which is located in the territory of InnerMongolia Erdos Suligemiao area, and it’s characteristics is low-pressure, low-permeability,low abundance. Su14block is located in the central south of Sulige gas field, the regionalstructure is the Ordos Basin in northern Shaanxi slope. Su143D test area is located in the thenorthwest of Su14block. The3D seismic test area of Su14blocks is the object of study inthis paper, for the specific circumstances specially, in order to achieve maximum economicbenefit of gas reservoir during development and reach reasonably stable service life, areasonable development strategy target which is proposed by oil and gas field development.This paper is based on the geological and dynamic data of the gas reservoir of Su14block3D seismic tests area, targeted the Su143D block seismic test area, take full advantageof well area integral geological data, manometry and dynamic production data, conductdynamic description and analyse the law of diminishing of each well, evaluate of geologicalreserves and dynamic reserves, formation pressure, productivity,etc. Provide technical supportfor the gas fields in scientific, rational, efficient development and long-term stable production.The main contents includes four parts, a numerical simulation model established, the dynamicproduction analysis, the block history matching research and development technology policy.Numerical simulation model is improve the geological model updating and history matchingmodel on the basis of the pre-geological studies, the production dynamic analysis, includingtwo parts of single well production dynamic description and block the production dynamicanalysis, development of technology policy research, including the three sections of the wellnetwork systems, pressure systems, work systems. The research results show that the Su143D seismic test area block descending belongs to the hyperbolic decline.400-800m is the bestdevelopment pattern in vertical well development schemes,600-800m take second place.Study block using horizontal vertical combination well net will get a better effect.Recommended adoption is fixed production system when choose the best system fromconstant pressure and fixed production.Innovation in this article is combination of the law of diminishing analysis, calculationof reserves, geological modeling and optimization and numerical simulation, proposalcorresponding to the block development policy sysmaticlly for reservoir characteristics of Su-143D seismic experimental zone.