570 research outputs found
Repower the Petroleumscape of Daqing: Combining Energy Landscape Theory and Scenario Planning in a Post-petroleum Planning of Daqing
No full textAs petroleum depletion and climate change becoming evident, it is relevant for urban designers and planners to think within a new energy paradigm contextualized by post-petroleum era. This report combines drosscape and energy landscape theory with post-petroleum planning, and tests this proposed method in Daqing, an oil city located in the northeast fringe of China. The present conditions of Daqing are analysed to provide a comprehensive understanding of the situation. Scenario building is then applied as a scholarly research method to deal with the future uncertainties in the hypothetical post-petroleum context, and picture spatial consequences of Daqing powered by renewable energy. Among the possible futures, two scenarios concerning renewable energy supply a base, upon which series of spatial strategies are delineated. This report is a research-based design – an experiment of using landscape (especially the abandoned petroleumscape) to facilitate renewable energy production and pursue urban economic and energy resilience, while improving the spatial quality of Daqing.Architecture, Urbanism and Building Science
The Daqing Oil Cluster: From petroleum hub to sustainable future
Full text linkSince the mid-20th century, the Chinese government in collaboration with various governmental petroleum authorities, first with the Ministry of Petroleum and later with state-owned companies, has transformed the built environment on multiple levels, creating interrelated infrastructures and production sites, installing refineries and petrochemical industries, constructing dedicated oil ports, building workers’ housing and educational, health or leisure facilities, effectively creating a palimpsestic petroleumscape. The development of Daqing oil field can be the best representor showing the how the Chinese government shaped the built environment and people’s lifestyle. Urban form in Daqing has changed extensively after the Chinese Economic Reform in early-1980s when the national policy shifted to complete and optimize the infrastructure and civic facilities. The recent national policies of the OBOR Initiative, which aims at balancing the economic sustainability and environmental preservation and Revitalizing the Old Industrial Bases in China have helped develop Daqing at the regional scale, Moreover, these national plans aim at balancing two potentially conflicting objectives: economic development and ecological sustainability. This paper explores in which manner the national policies and local spatial plans of Daqing have transform Daqing from the old oil mining district to the domestic oil hub, then to a sustainable oil cluster.History, Form & Aesthetic
Supplemental Material, S_Fig_1 - Methylene Blue–Based Near-Infrared Fluorescence Imaging for Breast Cancer Visualization in Resected Human Tissues
No full textSupplemental Material, S_Fig_1 for Methylene Blue–Based Near-Infrared Fluorescence Imaging for Breast Cancer Visualization in Resected Human Tissues by Chong Zhang, Daqing Jiang, Bo Huang, Cong Wang, Lin Zhao, Xianxin Xie, Zhaohe Zhang, Kun Wang, Jie Tian and Yahong Luo in Technology in Cancer Research & Treatment</p
Supplementary - Methylene Blue–Based Near-Infrared Fluorescence Imaging for Breast Cancer Visualization in Resected Human Tissues
No full textSupplementary for Methylene Blue–Based Near-Infrared Fluorescence Imaging for Breast Cancer Visualization in Resected Human Tissues by Chong Zhang, Daqing Jiang, Bo Huang, Cong Wang, Lin Zhao, Xianxin Xie, Zhaohe Zhang, Kun Wang, Jie Tian and Yahong Luo in Technology in Cancer Research & Treatment</p
The Shaping of Daqing: Borderless Interactions between Oil and Urban Areas
No full textSince the development of the oil industry in the 1860s, petroleum products became increasingly important in economies and shaped the urban form. The impact of oil exploration, exploitation, and transformation led to the creation of districts and cities entirely dedicated to the oil industry. This dynamic relationship between economic activity and urbanization was presented in the shaping of cities and their borders. Although important, the notion of borders and its consequences on the uses of land as well as on the life of inhabitants are often ignored. This paper first conceptualizes the term borders in understanding the interlinkages between oil and other areas closely related, either geographically or for the functioning of the oil industry; it then illustrates the intertwined borders of all these spaces from the contemporary example of the city of Daqing, in Northeast China. The paper answers the question of how past borders designed during the development of Daqing in the 1960s are impacting future planning strategies and the health of local inhabitants? By mapping the current land-use of the city, this paper elaborates on the need to consider borders beyond two-dimensional perspectives by revealing how spatial planning practices in oil-dependent cities can be an environmental issue today and in the future. The objective is to demonstrate the influence of past planning decisions linked to industrial activities on contemporary urban spaces.History, Form & Aesthetic
Distribution Characteristics of Micro Remaining Oil of Class III Reservoirs after Fracture Flooding in Daqing Oilfield
No full textThe class III reservoir in the Daqing Oilfield has poor sand body development, poor reservoir physical properties, and poor effects of measures. Its water drive recovery degree is low and the remaining reserves are large. It is the key target oil layer of the Daqing Oilfield. Due to the sedimentary characteristics and reservoir physical properties of class III reservoirs, conventional EOR technology (chemical flooding) and conventional stimulation and injection measures (fracturing) have poor potential tapping effects on class III reservoirs. According to the special reservoir conditions and development characteristics of the class III reservoir in the Daqing Oilfield, fracture-flooding technology is innovatively proposed, which greatly improves the recovery of remaining oil in class III reservoirs. The rapid injection of hydraulic surface activators into the formation and displacement of the remaining oil in class III reservoirs through rock core flooding experiments were simulated in this paper. The nuclear magnetic resonance (NMR), confocal scanning laser, and computed tomography (CT)-scanning technologies were applied to study the remaining oil distribution after fracture flooding. The results show that: (1) After fracture flooding, the peak value of the T2 spectrum curve of NMR shifts to the left and the degree of middle and small pore space production increases obviously. (2) Confocal scanning laser study shows that the remaining oil in thin membranous and clustered forms on pore surfaces is highly utilized. (3) CT scan study shows that the remaining oil in membranous and clustered forms is effectively utilized after fracture flooding. In summary, fracture-flooding technology can improve the washing efficiency and sweep volume of class III reservoirs, thus enhancing the recovery efficiency of class III reservoirs
Social and community intelligence : technologies and trends
No full textInternational audienceWith the pervasiveness of sensors, Internet-enabled devices, mobile phones, Internet applications and services, and wireless communication, a new field of social and community intelligence (SCI) has emerged quite quickly. SCI aims to reveal individual and group behaviors, social interactions, and community dynamics by mining the digital traces that people leave while interacting with Web applications, static infrastructure, and mobile and wearable devices. Author Daqing Zhang and colleagues provide an introduction to this field and highlight the various technologies
A New Software for Management, Scheduling, and Optimization for the Light Hydrocarbon Pipeline Network System of Daqing Oilfield
Full text linkThis paper presents the new software which specifically developed based on Visual Studio 2010 for Daqing Oilfield China includes the most complex light hydrocarbon pipeline network system in Asia, has become a powerful auxiliary tool to manage field data, makes scheduling plans for batching operation, and optimizes pumping plans. Firstly, DMM for recording and managing field data is summarized. Then, the batch scheduling simulation module called SSM for the difficult batch-scheduling issues of the multiple-source pipeline network system is introduced. Finally, SOM, that is Scheduling Optimization Module, is indicated for solving the problem of the pumps being started up/shut-down frequently
Estimate of Hot Dry Rock Geothermal Resource in Daqing Oilfield, Northeast China
No full textDevelopment and utilization of deep geothermal resources, especially a hot dry rock (HDR) geothermal resource, is beneficial for both economic and environmental consideration in oilfields. This study used data from multiple sources to assess the geothermal energy resource in the Daqing Oilfield. The temperature logs in boreholes (both shallow water wells and deep boreholes) and the drilling stem test temperature were used to create isothermal maps in depths. Upon the temperature field and thermophysical parameters of strata, the heat content was calculated by 1 km × 1 km × 0.1 km cells. The result shows that in the southeastern part of Daqing Oilfield, the temperature can reach 150 °C at a depth of 3 km. The heat content within 3–5 km is 24.28 × 1021 J, wherein 68.2% exceeded 150 °C. If the recovery factor was given by 2% and the lower limit of temperature was set to be 150 °C, the most conservative estimate for recoverable HDR geothermal resource was 0.33 × 1021 J. The uncertainties of the estimation are mainly contributed to by the temperature extrapolation and the physical parameter selections
Residual Polymer Reutilization for IOR after Polymer Flooding: From Laboratory to Field Application in Daqing Oilfield
No full textAccording to the reservoir condition of the Lamadian block for polymer flooding in Daqing oilfield, the optimized flocculating agent was studied in order to fully use residual polymer in formation and improve oil recovery after polymer flooding. The experimental results showed that stabilized sodium clay is the best flocculating agent and can react with residual polymer to form a floc unit for improved oil recovery (IOR). Using atomic force microscopy, we can see that the flocculating agent can react with residual polymer to form a floc unit and one clay particle usually reacts with four to seven polymer molecules. This residual reutilization technology was applied in six injection wells of Lamadian in Daqing oilfield; the six injection wells had 13 connected production wells with an average water cut of 95.5% and produced polymer concentration of 459 mg/L. About 30,971 m(3) flocculating fluid with 842 tons of flocculating agent was injected into the six injection wells. After treatment, the injection pressure of injection wells was increased and the injection profile was improved; the water cut of the connected production wells was decreased and the oil production rate was increased. The oil increment was 3.6 tons/day, the water cut decrement was 2.5%, and the produced polymer concentration decrement was 89 mg/L. By March 2008, the accumulated oil increment was 2,878 tons and the input output ratio was 1:3.33.Energy & FuelsEngineering, ChemicalEngineering, PetroleumSCI(E)EI0ARTICLE232441-24492
- …
