Reservoir Sedimentary Delineation And Accumulation Regularity In Yangcao Gas Field Of The Northern Songliao Basin

In the study area is located in the northern songliao basin three zhao depressionnortheast song stand nose structure, main research horizon is three, four period of quantouformation. Predecessors to three accounts of the sequence, tectonic and sedimentarysystem research, have a certain understanding, predecessors’ point of view is quantougroup of three or four period of deposit in songliao basin depression, delta and lake facies.In general, three or four paragraphs from quantou group is a process of lake invasion,above is qingshankou formation period of just a large set of mudstone. Not only providehelp Yang reservoir hydrocarbon source rocks, and can be used as a regional cap rock,benefit of hydrocarbon generation and accumulation. The main problems is theexploration of the need to further deepen and fine exploration and the research ofsedimentary and reservoir is more and more cannot satisfy the production need. Thepurpose of this study is on the basis of previous studiesFurther study on its sedimentarycharacteristics and accumulation, the oil and gas exploration and development is of greatsignificance, next to the songliao basin on the basis of production and the realization ofthe third party10million target of oil and gas is of great significance.Summarizing predecessors’ information through the system, integrated application ofdrilling, logging, seismic and testing data, using the structural analysis, sedimentary faciesand sequence research technology, logging and seismic analysis technology (sensitive logstatistics, sensitive log statistics) for the study area structure, fault, sedimentary, reservoirand so on has carried on the detailed research.Research indicated that matching relationship of cover and source control amount anddistribution of Fuyang gas reservoir;reverse fault in late time of long term action offerchannel for deep gas gathering to Fuyang layer. Yangcao gas reservoir mainly presencesgas reservoir of fault lithology or fault block.faults in this erea gather in high degree,default and sandstone combination relationship affect reservoir formation, so that the analysis of matching relationship between fault and channel sand is important forforecasting profitable zone.Research has been clear about the fracture system, the tectonic style and feature ofplanar four points, points out that cover the source controls the matching relationshipbetween fu Yang, the number of oil gas accumulation and distributions. Awareness ofstructure and trap is obtained by delicate Structure interpretation of Fuyang oil*layer zone inYangcao gas field;uniting with research of sedimentary facie,some research was proceededsuch as seismic reservoir conversion and sand body distribute in vertical or horizontal;structureand sediment feature along with gas reservoir feature were used to sum up thelaw of gas distribution, by which we can optimize the beneficial reservoir. Our research isimportant for exploiting Yangcao gas field and raising its recovery ratio.