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Predication Of Frocture Deevelop Characteristicis And Evaluation Of Horiontal Well Recovery In HuangShaTuo Oilfield

Posted on:2009-03-05Degree:MasterType:Thesis
Country:ChinaCandidate:L M WangFull Text:PDF
GTID:2120360272962620Subject:Oil and Natural Gas Engineering
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Practice shows that the development of domestic and foreign, double media for oil, in order to coordinate the system's fractures in the water flooding process and block scheduling system of self-priming oil in the process of the two systems to be fully balanced the mining, oil production when the appropriate speed, oil-water interface cracks in the system Rock and oil-water interface system increased the speed and a high degree of unity, the two processes will be balanced, can be achieved relatively high efficiency of water flooding; On the other hand, and cracks caused by oil-water interface system block height difference between large, fast rising water content, into the water along the cracks appear Coning to the bottom of the well, water wells and a high degree of taper as the single well production and improve the increase. This shows the rate of oil recovery while massive cracks in the water at the end of the development of the hill reservoir effect was obvious.Special lithologic oil reservoir rock types and a large variety of different types of rocks in the reservoir characteristics of the rock, reservoir area have shown a great deal of difference, which is the special characteristics of the rock lithology reservoir lithology on the basis. The use of the chemical constituents of classification, mineral composition and other classification methods, to make full use of information and laboratory analysis of the logging data on the volcanic rock can be effective recognition. Lithology prediction of space that must be resolved in the two substantive issues in the rock is horizontal and vertical distribution, that is, the space at any location (x, y, z) on the nature of the rock parameters and their distribution. Therefore it must use the individual institutes to provide basic geological data, including geology, logging, and other sources, ranging from precision, at the same time it must be certainty with interpolation and simulation of random thoughts, not on the case of drilling the rock formation And parameters to give the market forecast, which will eventually three-dimensional visualization of the visual graphics, simple to reproduce and lithology parameters of the spatial distribution and market changes.The yellow sandpile oil field is the first example tonner scale volcanic rock oil deposit which the China National Petroleum Corp Liaohe River Oil field Company discovered that the entire district accumulation reporting proven reserves 2171×104 ton, the proving includes the area 9.3 square kilometers surely. From 1999, in the yellow sandpile structure waist deployed the small 22 wells after the testing a newly drilled oil well date productive are 62.47t/d, the daily production were mad 8169m3/d happily attains the high production industrial oil stream, has begun this area exploration and development prologue. After development in recent years, this block exposes some questions: The bottom water advance is rapid, the watery rises quickly, output quick depletion; Because the long-term dependence natural energy development, the underground debt is big, the oil deposit degasificates seriously; The formation pressure drops quickly, drops 19MPa from initial period 31.3MPa; The sub-area daily oil production also from is highest when 950 tons drops to 381 tons, simultaneously the sub-area synthesis watery rises to 50%, the development situation is unoptimistic. Therefore, it is necessary to carry on the contrastive analysis with the production data to many kinds of crack forecast methods, by obtains the best development effect.The crack Qianshan oil deposit's development is the same to other conventional oil gas pool, must experience one on the one hand to practice, on the other hand to know that on the one hand develops the process which, on the other hand adjusts, side enhances. During this process, the contradiction which faces according to oil-field development's step change characteristic and the different period, conducts multi-disciplinary synthetic studies which changes unceasingly, proposed that the corresponding development technology policy, the promotion development effect and the development level enhance and the economic efficiency progressive improvement unceasingly.
Keywords/Search Tags:Qianshan oil reservoir, Horizontal well, Fracture prediction, Development arrangement, Parameter simulation
PDF Full Text Request
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