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Cheng C.,Key Laboratory of Mapping from Space of State Bureau of Surveying and Mapping | Zheng S.,Mathematics Teaching and Researching Office | Liu X.,China University of Mining and Technology | Han J.,Bohai Petroleum Vocational College
2011 International Symposium on Image and Data Fusion, ISIDF 2011 | Year: 2011

In this paper, the RD model for the foundation, through image and ephemeris data combined adjustment that the space-borne SAR image rigorous geo-location model with sparse GCP was built. Taking three conjoint images of one TerraSAR strip in eastern Himalayas, which elevation between 2800 m and 5500 m, as test data, positioning test carried separately on different GCPs and different orbit refined model. The result shown that horizontal positioning precision was 20 m when one GCP, which was far higher than the 700 m under the condition of no GCP, and few images in one continuous strip with a set of linear polynomial orbit refined model could satisfied the spaceborne TerraSAR image positioning with sparse GCP. © 2011 IEEE.

Liu X.,China University of Geosciences | Liu X.,Petrochina | Liu K.,Bohai Petroleum Vocational College | Li L.,Petrochina
Xinan Shiyou Daxue Xuebao/Journal of Southwest Petroleum University | Year: 2012

Low-permeability sandstone reservoir's flow potential is seriously influenced by lithology and physical property. The natural productivity is relatively low, which will perform well only after the reservoir reconstruction. Through the discussion of rock mineral, clay mineral, calcareous cement and microscopic pore structure, combined with well logs, cores and experiments, in this paper the factors that have effort on low-permeability sandstone reservoir's flow potential was analyzed, the key parameters in the evaluation of low-permeability sandstone reservoir were determined, the optimized production layer standards and plates for the fracture of low-permeability sandstone reservoir were figured out, the optimized logging model for reservoir fine evaluation and productivity prediction was established, and finally the optimized fracturing production layers hierarchically were classified. This result will be the guidance for production and has utilization value in improving harvest rate in the oil production test of reservoir and predicting effects after fracturing.

Lin S.,Bohai Petroleum Vocational College | Wu G.,Petroleum Production Engineering Research Institute of Huabei Oilfield Company | Zhang S.Y.,Petroleum Production Engineering Research Institute of Huabei Oilfield Company | Xie J.,Petroleum Production Engineering Research Institute of Huabei Oilfield Company | And 4 more authors.
Advanced Materials Research | Year: 2014

In order to utilize the beneficial Indigenous Microbial in objective reservoir, active formula systems with various nutriment components were investigated[1]. The results of performance evaluation showed that the activation, emulsification, viscosity break, and oil displacement performance of nutritional formula system were approved. Based on the field verification, the beneficial Indigenous Microbial in produced fluid of post treatment well array was activated, oil quality was improved, displacement efficiency was advanced, and oil production was increased. © (2014) Trans Tech Publications, Switzerland.

Wang W.H.,Bohai Petroleum Vocational College | Jiang Y.,Yangtze University
Applied Mechanics and Materials | Year: 2014

To solve the difficulties like locating and clamping in the processing of elliptic workpieces and meet the requirements of processing, so as to achieve the final processing purpose. Therefore, the characters of the parts and the best performance of current machining tool are combined, and the mandrel platform with included angle of 45° is prepared on condition that the processing difficulties and requirements are fully understood, and the locating and clamping are achieved by compressing the nuts, then the four-corner chuck is used for alignment and turning, so as to meet the requirements for production. © (2014) Trans Tech Publications, Switzerland.

Wang W.H.,Bohai Petroleum Vocational College
Applied Mechanics and Materials | Year: 2014

The 65Y-100X2 type centrifugal pump is used as the research objective for analyzing the operating principle and structure, so as to improve the reliability of petrochemical pumps in domestic and reduce the distance with the same products in abroad. The reliability index analysis method is used to implement the analysis to the reliability of system, and the reliability of centrifugal pump is improved and the failure rate of system is reduced. © (2014) Trans Tech Publications, Switzerland.

Zhu W.,Bohai Petroleum Vocational College | Zhang X.,Bohai Petroleum Vocational College | Ding Y.,Bohai Petroleum Vocational College | Yuan Y.,Bohai Petroleum Vocational College | And 2 more authors.
Well Testing | Year: 2011

The performance of reservoir strengthening is always a widespread concern to scientific and technical workers of the oilfield. In this paper, based on the data of gas logging, electric logging and well test, we attempt to build a relatively feasible mathematical model of qualitatively evaluating reservoir strengthening performance with modern statistical analysis method to guide the measure well's layerselection.

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