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And flooding of low resistivity reservoir layer and the oil-water interface to determine the method to explain the new understanding of


Larger, reflecting that they are positive rhythm fluvial sand body deposition, the constraints on the distribution of its T peak and the free flow of fluid peak separation, which T-and B-layer distribution patterns significantly different, indicating that two of the water has a high degree of , flooding has been very serious, especially in the bottom of the flooding more severe. Development of dynamic data from the surrounding well known, these two middle-layer water cut has reached more than 9O. It should be noted at the top of flood light, which is consistent with the sedimentary rhythm. Dielectric Dielectric logging data logging watered is to use the rock matrix and hydrocarbon dielectric constant e and e the dielectric constant of water is very different to achieve, in the strata, water is the only high-k electric constant e of ordinary matter, its too little influence by salinity. The length of the dielectric logging source from the electrodes using a combination of circumstances has been the formation of different depths of the dielectric constant, combined with conventional logging data, we can determine the flooding situation. Oil-water interface in terms of understanding the whole reservoir. From the macro that should be a unified whole reservoir of oil-water interface. However, the analysis of local reservoirs,birkenstock paris, oil-water interface does not ring 5 142 West 5 a check bearing in mind that comprehensive sets of curves well explain the NMR results of Figure 22. Island well and perforating the same in 2001. From the perspective of physics to analyze the reservoir this inconsistency oil-water interface, it will log interpretation in the future to master the different blocks in a flexible oil-water interface. Reservoir physics that: (1) When the reservoir lithology change is large, will produce irregular oil-water interface. This is easier to phase in horizontal layers of oil and gas faster. Small oil-water contact surface facies is relatively high, coarse facies oil-water contact surface is relatively low. The reason may be the critical capillary pressure. In the log interpretation, those type of bottom water reservoir to draw attention to the horizontal may be the existence of such irregular oil-water interface. (2) different cover its underlying closure of the reservoir have different capabilities, the capture of the oil column will have different heights. From the cap rock and reservoir pore structure, water density, interfacial tension determines the different height of oil column, resulting in heterogeneity of oil-water interface. Log interpretation, in contrast to multi-well, not only to analyze the changes in the reservoir, but also to analyze the changes in the thickness of cap rock,abercrombie paris, in order to grasp the changes in oil-water interface. (3) and phase change with the construction of fault and stratigraphic traps reservoir reservoir also has an irregular situation in the oil-water interface in well log interpretation to grasp. (4) continuous rhythm formation or deposition is continuous deposition of anti-rhythm can also result in the formation of different oil-water interface. This sand should pay attention to the periphery, because the central parts of the body in the sand and the edge of the oil-water interface will change. Rhythm sand reservoir is oil-water interface is higher at the margins, anti-rhythmic sandstone reservoir oil-water interface is lower in the marginal zone. Conclusion Jiyang complex underground geological conditions, the geological formation of the intricate chaos. Different lithology, different reservoir types, log interpretation should be fully taken into account the following: explain the flooded layer, in which a low porosity, low permeability reservoir. Up in the water for a long period of time, into the flooded water in the end will come? Time difference between the permeability of reservoir rocks is the main aspect to be considered, but also a corresponding ground pressure should not be overlooked. Despite the poor permeability of the area, once the pressure reaches a certain level. Flooding is possible. Because this process is a very slow process, with complex lithology, the logs are not necessarily signs of flooding. On the geological structure clear, easy-to-stratigraphic correlation of the reservoir, especially for wide distribution, connectivity is good, oil light, variation in thickness of sandstone rock reservoirs, the interpretation must take into account a high degree of structural problems. Because the level of logging changes in resistivity by the thickness of the rock particles, such as carbonate content greater impact. High parts of the reservoir structure. If the lithology thinner, even if filled with oil may also show low resistance; the contrary, the low parts of the water layer constructed with gravel or with gray matter because it may appear as high impedance. This need to compare a large number of adjacent wells, the oil analysis test conditions, production, introduction of multi-well interpretation. This interpretation is consistent with the rate of increase logging will be of great help. Explained in the single well, we should pay attention to the distribution of reservoir, the reservoir ready for the sand group will not have a very complex water system. For those fault block reservoir, some water systems may be complex. References 1 Tseng Wen-Chong series. Gas collection layer sleeve piece of eight wells evaluation techniques. Petroleum Industry Press. 1991102 David Lu, Hong county law. A total of eight digging edge and magnetic theory and application. Beijing; Petroleum Industry Press. 1998.3 author: Wang Xuanlong,abercrombie marseille, male, engineer, born in 1968. In 1990 graduated from the China University of Geosciences petroleum geology, logging companies are now engaged in Lu victory well analysis and research. (This stretch series Wangman Hua)
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