The Fault Evolution Of Selibuya And Its Oil And Gas Sense In Bachu Uplift

Its development and evolution of fault identification is to implement theeffectiveness of traps and trap an important factor in evaluation and content. In thewestern of Bachu uplift of Tarim Basin,Selibuya fault region is one of most developedfaults, which are rich in oil and gas resources. In the Selibuya fault region, developeda lot of oil and gas traps, most of these traps formation and fracture are closely related.However, by the multi-color power Papua region of tectonic movement, thegeological characteristics of the more complex, less geophysical exploration, drillingfewer and unevenly distributed, leading to understanding of the previous studies in itsdifferent, but there are still some key geological problems remain unresolved.Therefore, studying for breaking nature of the sub-consciousness, fault structural style,the evolutionary history of fracture and fracture of the role of oil and gas controlsystems, comprehensive, in-depth is necessary.In this paper, structural geology theory as a guide to the latest availablegeological, geophysical exploration, drilling, seismic, stratigraphic and othercomprehensive information-based, seismic interpretation, fault evolution as the mainbasis, profile characteristics of the study area, the plane distribution feature, thetypical (main) fracture characterization and evolution of the fine.Made the followingmain conclusions in this paper:(1) Previous studies and in the use of existing seismic data, the Selibuya faultregion in the plane is divided into northern, central, and southern segments (threesub-belt).In profile, Selibuya fault including thrust faults in the deep and shallowthrust fault , thrust faults in the deep shows structural features of basement-involvedtype and shallow thrust fault shows structural features of cover slipping.With theSelibuya fault formation, also derived from different developmental levels of fault inits northern section of the plate are developed with the Tonggang 3 derived fault rupture, which have the same post secondary fracture 1,2; development of thesouthern section are derived fracture Yasong Di fracture.Development of a secondaryfault footwall Bashi Tuo - the first generation of Lectra Bazaar fault and fracture ofjade, these faults together form the Selibuya fault region in the western end ofBachu uplift.(2) Based on the analysis structural style of Selibuya fault region, the paper alsohave studied the formation and evolution of its main faults . Selibuya fault regioncontains four activities way, combined with the stress evolution of the ancientbackground of the study area, the main fault activities grouped into six times:①Basement-involved extensional faults stage type from SinianPeriod to LowerOrdovician;②Forward and reverse thrust developmental stages in the end of the LateOrdovician;③Weak squeezing inheritance basement-involved thrust stages in the endof the Middle Devonian;④"Crack without depression" stage of local extension faultsin Early Permian;⑤Basement-involved thrust-type strong developmental stages inEnd-Permian;⑥Basement-involved strong transpressional fault type - type thrust faultslip cover superimposed stages from Miocene to Holocene.(3) Based on the analysis structural style and fracture evolution of Selibuya faultregion, controlling possession from the point of fracture to favorable structural stylesand types of traps, trap efficiency, effectiveness and system of transporting oil and gasconstruction reference for the evaluation of storage conditions, summed up thecharacteristics of fault control oil and gas power in Selibuya fault region,and dividedinto three categories of favorable areas: Ya Songdi secondary belt, Bashi Tuo - belt forthe first Bazaar favorable area; jade belt is a more favorabl...