Entity

Time filter

Source Type


WANG Z.,China University of Petroleum - Beijing | WANG Z.,Northeast Petroleum University | LIU C.,Northeast Petroleum University | WANG W.,Northeast Petroleum University | And 3 more authors.
Mining Science and Technology | Year: 2010

Breccia lava is a type of rock in transition between volcanic clastic rock and lava. Its physical properties are comparatively special, while the nature of its genesis and the formation of reservoirs, deposits and concentrations vary considerably. In order to discover the different genesis for breccia lava reservoirs, our study has been carried out on breccia lava for its rock constituents, structures, diagenesis and reconstruction from tectonic movements to mineral depositions. From our analysis, we conclude that the main type of reservoir is a secondary emposieu, where rock compositions, structures, diagenesis and tectonic action are the major contributing factors to the deposition of breccia lava and its properties. Diagenesis constrained the extent of conservation of the primary pore of breccia lava and produced secondary porosity. The roles of tectonics were played out through the formation controlling tectonic fissures inside breccia lava and affected the impermeability of breccia lava fluids. The constituents of lava rock determine directly the type of diagenesis and its response to tectonic action. At the time of appropriate rock composition and structures, constructive formation occurred to breccia lava. Breccia lava also responded proactively to tectonic movements, forming the best quality collective reservoir agglomerations of vast spaces and strong permeability. © 2010 China University of Mining and Technology. Source


Liu C.,Daqing Petrochemical Company | Wang W.,Daqing Petrochemical Company | Yi L.,Daqing Yushulin Oilfield Development Co.
Petroleum Refinery Engineering | Year: 2013

PetroChina Daqing Petrochemical Co., Ltd has successfully disconnected the external catalyst cooler from a 1. 0 MM TPY RFCC unit and connected it for the first time in 20 years' operation after it came on stream. As the leaking of discharge valve of cooling water pump made it impossible to maintain the mechanical seal of the pump, it was planned to disconnect the catalyst cooler and associated thermal system to replace the valve without unscheduled shutting down of the RFCC unit and to realize the long-term operation. In order to prevent overheating of catalyst cooler tubes and tube rupture and minimize the impact on the tube service life, pumped cooling water was used to reduce the catalyst cooler temperature to lower than 200 °C after disconnection of catalyst cooler. When catalyst cooler was connected, the temperature difference between feed water and catalyst cooler was only dozens of degrees centigrade. The temperature rse and fluidization process were slow, and service life of catalyst were ensured. The one year's operation shows that this plan is reliable and safe. Source


Wang Y.-C.,Northeast Petroleum University | Wang Y.-C.,China University of Petroleum - Beijing | Xu G.-B.,Northeast Petroleum University | Liu L.-F.,China University of Petroleum - Beijing | And 2 more authors.
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | Year: 2011

According to the geochemical characteristics of source rocks and crude oils, the oil-source correlation of Putaohua and Fuyang oil layer in South Songzhan area, Songliao Basin was analyzed. The results show that the oils of Putaohua and Fuyang oil layer in South Songzhan area and in Sanzhao depression have the same source and the oils are all mainly derived from the hydrocarbon source rock of the first member of Qingshankou formation, second from the second and third member of Qingshankou formation. Inside the oil source area of South Songzhan, the oil of Putaohua layer is mainly from the oil generated from the first member of Qingshankou formation and the oil migrates along the effective faults due to the buoyancy of water. Under the effect of paleo-overpressure, the oil of Putaohua layer together with the oil expelled from the Qingshankou formation can migrate downward into Fuyang payzone along the T2 faults. The oil from Sanzhao depression, the large hydrocarbon-generating depression of the basin, can be effectively transported to South Songzhan area through the path of faults and sandbody. Source


Ma Z.,China National Petroleum Corporation | Xie Y.,China National Petroleum Corporation | Liu Y.,China National Petroleum Corporation | Wang D.,China National Petroleum Corporation | And 4 more authors.
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | Year: 2015

In order to fully understand the resource potential of the continental margin basins in eastern South America, through hydrocarbon accumulation factors analysis of the 19 continental basins, the petroleum features of the continental margin basins in eastern were systematically concluded, based on which the resource potential of these basins was evaluated by taking play as basic evaluation unit. The results show that: 1) the eastern margin is through rift-transition-continental structural evolution periods; 2) two major source rocks i.e. the Cretaceous rift lacustrine source rock and continental margin marine source rock are developed; resources mainly concentrate in Cretaceous (69%) and Tertiary (29%) reservoirs; Cretaceous interlayer mudstone and tertiary marine shale are the main seal rocks, and salt develops in the middle basins is another major regional seal; resources mainly distribute in the central salt developed basins (about 96.32% of the total recoverable reserves of continental margin basins); 3) the total undiscovered oil and gas resources are 132 451 Mmbo, mainly in Campos, Santos, Espirito Santo, Guyana and Malvinas in plane and the upper play in vertical; the upper play of Campos basin is the most favorable exploration area, and the middle and bottom plays of Santos are the secondary targets. ©, 2015, Central South University of Technology. All right reserved. Source


Pi Y.,Northeast Petroleum University | Guo X.,Northeast Petroleum University | Liu Q.,budget center | Liu L.,Northeast Petroleum University | And 2 more authors.
Energy Education Science and Technology Part A: Energy Science and Research | Year: 2014

There is an inevitable relationship between the resistivity and water saturation for sandstone reservoirs. For convenience, in this paper, it is the relationship between resistance and oil saturation that was used to characterize their relationship. Following factors are considered: temperature, permeability and porosity, formation water salinity, electrode spacing and displacing medium, which factors may affect the correspond relationship between resistance and oil saturation to some extent. So the experiments on the influence of above factors were conducted. The experimental results showed that: the greater the permeability and porosity, the less of resistance value; between 25 °C; to 65 °C;, the temperature has little effect on the resistance value of the cores; the influence of displacing medium to the resistance mainly depends on the salinity; the resistance value will increase with the distance between electrodes simultaneously. © Sila Science. All Rights Reserve. Source

Discover hidden collaborations