... concentration polymer gel flooding molecular configuration oil production polymer gel polymer concentration oilfield waterflooding injection pressure flow in porous media fluid dynamics enhanced recovery residual resistance coefficient upstream oil & gas cross-linking reaction cr 3...

... Abstract La-sa-xing oilfield of Daqing in China, which accomplished polymer flooding in quick succession, had now entered into subsequent water flooding stage with yearly increase reserves, so various development contradiction were serious, the effect of conventional measures by water flooding...

... with a horizontal displacement of 8000m. However, the Liuhua Oilfield is located in the South China Sea, an environmentally sensitive area. It is necessary to develop the high performance water-based drilling fluids which offer the performance to match oil-based drilling fluids. The integrated design proposal...

... potential modeling & simulation recovery factor oil distribution oilfield geological modeling spe 131950 history match sudan society of petroleum engineers upstream oil & gas Introduction Large hydrocarbon accumulations have been discovered and produced from fluvial sandstone...

... drilling oil field directional drilling underbalanced drilling china spe 131844 process ubd oilfield gas drilling annular pressure drilling ubd equipment complexity application underbalanced drilling technology cnpc completion drilling operation ubd valve air hammer circulation...

... Abstract When drilling infill wells in heavy oil oilfields of Bohai Bay after over teen years production, there are three challenges to achieve ideal production rate. The first one is wellbore stability in unconsolidated sandstone formation. The second one is risks of pollution and damage...

... technique in Daqing Oilfield, the greatest treatment is up to 4 sections with one trip string, the success rate is 100%. Considerable yield increase effect is available. It is statistic 5.9 m3/d average fluid increase, 4.8 t/d average oil increase, and 182% the average productivity increase rate of single...

... which kinds of sand control methods are appropriate for the given formation. A number of design and operational guidelines have been suggested for a suitable completion method. acid treatment gravel pack spe 136734 sand control failure oilfield completion screen selection formation sand...

... Abstract Part of the produced water of Boxi oilfields was separated from the produced fluid in the central platform to be treated, reinjected and drained, and the remained fluid was piped to the terminal onshore, then the remained produced water was treated and drained onshore. The amount...

... of permeability tensor of Micro- fracture for hydraulic fracturing rock is established. Take one well in Ji-Lin oil field as object, the regularity for change of parameters of rock were obtained. damage variable rock mechanics unit normal vector oilfield hydraulic fracture society of petroleum...

... hundred meters apart without sealing equipments. The deepest treatment in oil well 203-19 in Zhongyuan oilfield, using tubing string, was 3692m, and surface pressure reached 88MPa. Significant stimulation results were achieved in these wells. For example, production increased by more than 50 times after...

... Abstract In a multilayered and heterogeneous sandstone oilfield, the corresponding adjusting measures could be taken to improve the displacement efficiency only when the producing performance of every single-layer is evaluated. As to Lasaxing Oilfield, while most of the reservoirs have been...

... Abstract Several auto-controlled oilfields with more than one million tons oil production capacity per year respectively have been build in the deserted area in Junggar basin in Xinjiang, China since 1994. Advanced SCADA (Supervisory Control and Data Acquisition) systems have been used...

... Abstract The horizontal water injection is utilized in some oilfields worldwide. The successful practices show that horizontal water injection can enhance the injectivity. Especially for the fields in high water-cut stage, horizontal injection can improve the reservoir pressure maintenance...

... Thickness Effectiveness water cut intraformational bed positive rhythm oil layer oilfield Gudao Oilfield oil production horizontal well oil distribution society of petroleum engineers rhythm oil layer petroleum engineer permeability tapping potential technology drilling operation thick...

... Abstract High cycle stimulation in Henan heavy oilfield has been suffering the problems such as low formation pressure, much accumulated water which deadly influence the steam thermal efficiency, leading to a bad production recovery. In high temperature, SEPA solution can decompose out gas...

... Abstract The remaining oil in mature oilfields at high water cut stage is highly scattered in the whole field and relatively abundant in some localities. In view of this feature, a new approach is proposed to predict the distribution of the remaining oil in mature oilfields by integrating...

... Abstract With the increasing oil production of Changqing oilfield, the casing's corrosion and damage have became more and more serious in producing and injection well system. After long term research, the corrosion mechanisms of casing were made sure, and two main technologies were developed...

... Abstract This paper summarizes the three big challenges in the development of the oilfields in Bohai Bay: most of the reserve is heavy oil; formation is unconsolidated and lower productivity after sand control operation. Through years of research and improvement, based on serious analysis...

... Abstract In this paper, reservoir simulation model is built so that the geological characteristics of West region in Gudao oilfield, which has entered into very high watercut development period, are described finely. Then, the production history of about 20 years was matched. Base on the exact...