Xing-ma Qianshan Formation Conditions And Excavation

Liaohe depression in the western sag xing-ma qianshan tectonic belt has a wide area of oil,petroleum geological reserves is very rich,it has been mined for nearly half a century since it was discovered in the 1970 s.Due to the complex geological conditions in the region,it's difficult to identify lithology with the original logging method,at the same time,the knowledge of Xing-ma qianshan is constantly deepened,and the geological conditions of remining are found in a large number of old Wells and inefficient Wells,so it's necessary to carry on the lithology reproduction and the old well excavation work for the Xing-ma qianshan tectonic belt.In this paper,the research aim of Xing-ma qianshan is studied,in the process of the study,the data of 174 Wells in the area were statistically analyzed,based on core logging,element logging,wafer analysis,logging and seismic data,re-understanding of the Mesozoic and Tai Gu Yu core lithology of Xingma buried hill,and the reclassification and comparison of the strata,vertical lithologic section 14 Wells in the area at the same time,summarized the top of the Mesozoic and Tai Gu Yu lithologic distribution characteristics,complete advantage of reservoir reservoir and interlayer distribution research,to explain the buried hill of seismic data,the implementation of the buried hill structure,summarizes the Mesozoic reservoir distribution and accumulation pattern.According to the laws of the fractured-vuggy reservoir elements Tai Gu Yu advantage,summarize vein rock sandwich insulation impact the advantages of the reservoir,the final analysis of buried hill hydrocarbon accumulation conditions of work area,put forward advices on governance inefficient Wells and well placement.Through the analysis of the techniques,it is shown that the use of elements,the whole rock,and the thin slices of the paper is to be able to see that the work of the TAS is to be reacquainted with the lithology of the mountain;It is suggested to use the characteristic element Si/Fe ratio,seismic and stratigraphic correlation data to analyze the forming conditions of the working area.Finally,test the oil of 10 low efficiency wells,and propose two design well placement suggestions.