Study On Gas Reservoir Engineering Development Design Of Dashrabt Structure J₃k-o Gas Field

Dashrabt structure is in Xsaer Piedmont structure,.In 2012,the 3-D seismic area of 1090 km 2 was collected in Zora area,AMH area.The Dashrabt area is located in the 3-D seismic coverage area.In 2016-2018,3-D seismic dataof the Dashrabt area was processed and interpreted,and the 4x4 seismic lines were refined and interpreted in early 2018.The first exploration well,Dat-21,was drilled on Dashrabt structure from January 2017 to July 2017.The well is located at high positions of Dashrabt structure nearby fault and The well Tset illustrated as a gas well.The developed adjacent areas are characterized by high production rate in the early stage,insufficient stable production capacity,high water production in the middle stage,and insufficient water control.According to the regional geological characteristics,reservoir heterogeneity is common,faults and fractures are developed,and fractures and cavities are developed in some strata.Gas fields are high-pressure or abnormally high-pressure oil-water carbonate rocks.Gas reservoirs.Due to the lack of understanding of fractures in the adjacent gas fields,the production rate is too high in the gas fields design,the wells location are unreasonable,and the production is difficult to to achieve.Therefore,it is necessary to evaluate the development potential of Dashrabt structural.and this paper,the Karlof-Oxford Order top boundary seismic reflection structure of the latest three-dimensional seismic interpretation by the completed drilling data,studies the structure of gas reservoirs and the characteristics of fault distribution,and deeply analyzes the controlling factors of reservoir development and physical characteristics of reservoirs,The heterogeneity of reservoir is comprehensively evaluated,the gas reservoir is clarified by the method of coherence and curvature,and the geological model of the Matrix-fracture double medium gas reservoir is established,and the fracture is mainly developed in the upper XVhp layer,showing 2 characteristics of the system,The fractures in the plane are developed at the same time near the high and edge faults of the gas reservoirs.Through the Eclipse Reservoir simulation software,the two-hole double permeability numerical model is established,the gas reservoir simulation research is carried out,the geological target of well location deployment and the forecast and comparison of development index are put forward,and according to the related production experience of the gas field,it is suggested that the main channel of the south near fault area is water invasion,and the gas field is The new drilling is a high-angle well,preferably in the eastern part of the target position.