Study Of Shahejie Formation’s Reservoirs Forming Rules Of Daliuquan In Central Hebei Depression

In order to study the gallery big LiuQ uan solid sag in shahejie formation hydrocarbon accumulation regularity, in the use of localized, drilling, logging, well logging, testing, and on the basis of 3 d seismic data, in combination with the regional tectonic background of the big LiuQ uan region, has been clear about the hydrocarbon source rock, reservoir, cap rock, and conducting system accumulation elements such as control action of hydrocarbon accumulation, shahejie formation reservoirs as the main researc h object, the hydrocarbon accumulation pattern determines the big LiuQ uan area.Combined with the tectonic background and the distribution of oil and gas, large LiuQ uan area clearly shahejie reservoir types are mainly cross fault block reservoirs, fault nose reservoirs, fault block reservoirs and sandstone updip pinchout reservoirs. Again, through the analysis of various main controlling factors of hydrocarbon accumulation, source rock, reservoir, cap rock and conducting conditions of hydrocarbon accumulation effect is different. First of all, the effective hydrocarbon source rocks of range determines the distribution of oil and gas, oil and gas within the scope of most focus on effective quite far, part of the oil and gas distribution outside the scope of e ffective source rocks also accord with the theory of proximal accumulation. Second, determine the oil and gas reservoir property distribution of strata, reservoir physical properties and structural high part of the configuration relations, determines the d irection of the plane of the hydrocarbon migration. Again, the size of the cover layer thickness of a breakout determines the migration of oil and gas layer, cap rock distribution range determines the distribution of oil and gas in the plane. Finally, oil source faults and the position of the ridge of area determines the advantage of vertical migration of oil and gas channel, the advantage of the migration path of the filling and determines the concentrated area of the planar distribution of oil and gas.In the research into the various main controlling factors of hydrocarbon accumulation, the analysis of each factor’s contribution to the hydrocarbon accumulation, it is concluded that big LiuQ uan in shahejie formation hydrocarbon accumulation pattern. Hydrocarbon accumulation pattern in the study area are mainly two kinds, namely laying on two-way for hydrocarbon reservoir-patterns-reverse fault and laying on the store- broken sand accumulation at conducting- fault model.