The Research On Oil-gas Reservoir Model And Distribution In The Changling Fault Depression

Study area of this paper is the Changling fault depression.Changling fault depression udergo the three stages of evolution which is the faulted phase of the Huoshiling of Late Jurassic to the Yingcheng group of Early Cretaceous and depression period of Denglouku group of Early Cretaceous to Late Cretaceous and Phase inversion of Tertiary to So far,The purpose of this article is the use of the basic geological data,such as drilling, logging and seismic data,through study of the history of tectonic evolution,analysis of hydrocarbon gas reservoir types,analysis of trap type,fracture of the impact of oil and gas reservoirs,the emperature of fluid inclusions in reservoir testing,study comprehensive study of second-class period,the establishment of the study area in the deep gas accumulation model.Study of the history of tectonic evolution of the reservoir is the other the basis of elements,including burial history and tectonic subsidence history.Buried erosion quantity is an important study of the history of the content.In the study,the first calculation of the use of erosion calculated the 8 wells in the area the volume of erosion,on the basis of burial history has done a profile of the three.Study of the history of tectonic evolution of the results showed that experienced three tectonic movement more obvious,namely late Yingcheng,late Nenjiang and Mingshui late.The three structure types of reverse movement of the trap and gas migration,accumulation,preservation,has an important impact.Homogenization temperatures of inclusions in a single well test results with the study of the history of the combination of burial,the burial history-even the temperature of natural gas filling to determine the time and period of time.The study area in the City Hall payment business structure and stratigraphy Denglouku the existence of natural gas in the accumulation period of time,time for the end of Qingshankou(88Ma) to the early Nenjiang(82Ma),the main gas Shuangtuozi structure into four accumulation period,the first time earlier accumulation,Houshiling group of hydrocarbon gases in Yingcheng(125Ma) had a return period of migration.Into possession of the second period and Yingcheng and Denglouku hydrocarbon Qingshankou gas reservoir in the early(99-95Ma) formation.Into possession of the third period is a period of Quantou gas reservoir in the structure Nenjiang return at the end of period(79-75Ma)formation.The fourth is an ancient Near Jizhong-Late(44-35Ma) accompanied by tectonic movement, hydrocarbon gases re-gathered to form the gas reservoir.Fulongquan Quantou section of structure formation in the presence of hydrocarbon gas reservoir into a main accumulation period,the time for the end Nenjiang(72Ma).Practic of oil and gas exploration has proved,source rock,reservoir and cap combination of vertical and horizontal type configuration is the formation of rich oil and gas accumulation,especially in the formation of an important condition for Spodiopogon one field.Through the comprehensive evaluation of hydrocarbon source rocks and gas-source correlation,combined with gas composition and carbon isotope data analysis,to determine the cause of hydrocarbon gas,hydrocarbon gas reservoir into the type.According to Ro measured data to study the evolution of source rocks in the degree.To study the basis of sedimentary facies to an analysis of the measured physical properties of the basis of reservoir rock combined with the results of microscopic observation,evaluation of different types of reservoir rock storage capacity.On Nongan and Huaide gas containing tWo sets of objectives for the study to examine the longitudinal gas reservoir,flat distribution and hydrocarbon gas reservoir distribution and the correlation between zone.Southern of Songliao basin gone through a number of transform tectonic movement, fracture development,early rupture of oil and gas activities have not yet generated,can not become a channel for oil and gas migration.Only in the late Mingshui and Nenjiang formed during the late tectonic movement of the early activities of the late rupture fault,fold in the larger context of conditions of the fault system is active,and the gas source to communicate(hydrocarbon source rocks of Shahezi group and Yingcheng) and the broken trap,only as a channel for oil and gas migration.Rift within the fold is mainly formed near the North East and North-North East to the main fracture is nearly east-west stretch of the tensional stress field in the formation.These faults are so deep-seated regional gas migration,accumulation,one of the main divert system.Fracture have a great impact in the formation of oil and gas reservoirs,the impact of a positive effect on performance for the two sides of the main,first,communication between the source rocks and play the role of the reservoir,and the efficiency of hydrocarbon migration is much higher than the general reservoir;Second,under certain conditions,the impact of soil strata by faults on the upper or lower side of the reservoir from the role of blocking,which is conducive to the formation of hydrocarbon traps.Thus the above study to Changling fault depression of the Nongan and Huaide gas for the study included two sets of units,according to the causes of the type of gas,flat and vertical distribution of the characteristics of source-reservoir-cap portfolio with the formation of gas reservoir conditions,summary hydrocarbon distribution of the gas reservoir,the establishment of the study area of the gas reservoir of hydrocarbon accumulation model。...