The Exploration Potential Analysis Of Petroleum In The Depression Belt Of Huzhuangji

Through the sort of structural styles, the features of fault development, analysis of reservoir development and plane, vertical distribution and characteristics, research structure and reservoir distribution control over oil and gas exploration and accumulation, reservoir forming conditions in reservoirs, the favorable exploration zone and selection potential target. The 3D seismic fine interpretation by using arbitrary line to check the closed horizons and faults, with reasonable horizontal slice and the fault number check fault combination. The Bohai Bay Basin were all NNE trend, distribution of Haitong Dongpu sag mainly fracture ring depression belt is NNE, for the same regional background. Hu 41 to Hu 123 block drilling test reservoir lithology, oil content, physical property, the electrical characteristic and the oil test results as the basis, establish the reservoir lithology identification, oiliness, physical property, electrical standard for logging interpretation, two. Sand three Ⅱ sand reservoir lithology of siltstone, sandstone; logging oil level of fluorescence, amplitude attributes can reflect the reservoir plane distribution characteristics, select the largest absolute amplitude, average peak amplitude, the root mean square amplitude comparison, the root mean square amplitude attribute can reflect the reservoir distribution good, and sandstone isopach map corresponding relationship. Hu 41- Hu 123 block reservoir burial depth(3160-3840m), formation pressure coefficient is greater than 1.5, for the high temperature and high pressure reservoir, crude oil has the advantages of low density, gas oil ratio. 41 well 20# layer, 6# layer Hu 82 well logging porosity permeability solution of 10.1%, 1.1, oil test for reservoir, petrophysical lower standard 10%, oil and gas electric limit standards: Δ t ≥ 220 μ s/m, Rt ≥ 3 Ω.M.Huzhuangji near depression belt in Shasanzhong advanced to three on the sand, the lake basin expansion, dominated by lake facies. The source for the Sha Sha three section three formation, oil and gas generated directly to the nearest migration to sand three reservoir, the lack of fault as the oil and gas migration channel, into a self storage reservoir. Huzhuangji near wa with three types of potential:(1) favorable hydrocarbon accumulation conditions, structural traps, has obtained industrial oil and gas flow, or the lower part of the structure has been low yield oil and gas reservoir types and distribution of oil and water, the basic laws of clear, through further drilling to expand the gas range.(2) having the same reservoir conditions and proven Development Zone, structural traps, have been found in oil and gas reservoir or the lower part of the structure to see the show of oil and gas, oil and gas reservoir types clearly, through the drilling control and understanding of reservoir.(3) tectonic location or better, than the implementation of structural traps, with superior source reservoir cap rock conditions, low degree of exploration, drilling revealed no or low position to see the show of oil and gas, the need for further research to implement evaluation, structure and hydrocarbon. Select 8 rolling evaluation target, prediction of oil-bearing area of 17.58km2, prediction of petroleum geological reserves of 715.7×104t, prediction of dissolved gas geological reserves of 22.47 ×108m3.