| Wuerxun depression is a secondary structural unit of Beier Lake depressionHailaer basin, as a north-south trending, west off the East over the half graben rift.Surennuoer oil field is located in Surennuoer structural belt north of Wuerxundepression Hailaer basin.The study of the Su Union 301,102,131 Surennuoer oil blocks were constructed toexplain fine structure to study the fracture characteristics of these three blocks, trapcharacteristics. Meanwhile, also studied the sand body distribution, sedimentary faciesand reservoir characteristics of Nantun group, Soviet block 301.This research hasmade a major understanding of the following:1.The main time of Surennuoer fault belt mainly activities within the mainsection of the South during the late Damoguaihe period, Yimin group of the late QingYuen Kong of the trunk is more the fault of activities with multiple features.2. Surennuoer tectonic faults associated with major development and structuraltraps, which block most development. Many traps along the main fault of both sidesof the distribution.3. Su-301 to block the main structural reservoirs or structural ~ lithologic based.Faults and unconformities in the hydrocarbon migration plays a key role. I oil blockSu301 is the regional basal unconformity, is the main channel lateral migration of oiland gas, and on top of it for the LST of the sand body, the following is HST's sand,forming a Accumulation of good space. Communication fault is the southern sectionof source rocks, oil and gas vertical and lateral migration of the main channel.4. Su 102,131 Surennuoer transfer zones in the block up disk, as SurennuoerNNE transform faults and the formation of the fault block, adjacent to the mainoil-generating depression, depression formed in the South and North oil and gas alongthe fault And not for the integration of transport, source conditions are good, and thefracture and communication between the source rock kitchen, constructed withmassive oil and gas activities during the same accumulation time, source rocks generated oil and gas sources can be entered through tears, With the unconformitywith the migration, two sets in the fault block traps in the high position ofaccumulation.5. Sec Surennuoer region is Nantun LST deposition, source from the northwest.Nantun during the deposition phase of rapid subsidence in the rift, the deposition ofthe formation is relatively coarse grain size, poor sorting, sediment thickness andlithology changes in the larger landscape, forming a source close to shore alluvial fanand Semi-deep lake - deep lake sedimentary system combinations.6. 2nd.Nantun group Surennuoer deposition phase of alluvial fan - lacustrinefacies, the main subfacies of fan, the fan edge, semi-deep lake - deep lake andturbidite fan, a major fan microfacies In the channel sand in the channel between thesand and mud fan, fan fringe channel sand (fine, silt) - fan-margin channel betweenthe sand and mud, semi-deep lake - deep submarine fan clip fan mud lake front edgeof sand, semi-deep lake - deep Lake mud, and turbidite sand .7. integrated structure, seismic, reservoir, etc. Well on a comprehensiveevaluation of each individual well will be divided intoⅠ,Ⅱ,Ⅲthree types.TypeⅠwith the regional structural high in the reservoir for the water diversionchannel underwater alluvial fan of sand, earthquake prediction, reservoir thickness>15m, logging reservoir thickness> 15m, capacity> 5t/km.d, area 0.19km~2; TypeⅡblock in the structure or slope areas with high reservoir turbidity fan sand or alluvialfan edge channel sand, earthquake prediction reservoir thickness 10-15m, loggingreservoir thickness of 10-15m, capacity 1 - 5t/km.d, area 0.35km~2; TypeⅢslopeblock in the construction zone, alluvial fan edge of the underwater reservoir sandchannel - channel between the mud, earthquake prediction, reservoir thickness <10m,logging reservoir thickness of 0-10m, capacity <1t/km.d, Area 1.08km~2. |
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