This study deals with onshore oilfield drilling fluid system to drill corrosion. Corrosion under static and dynamic conditions of the drilling fluid was evaluated. The effect of temperature and pressure on corrosion was examined. Corrosion was more severely affected by temperature compared to pressure. The combined effect of a deoxidizing agent and an inhibitor was observed to exhibit better pr...

knowledge of the orientation of horizontal in situ stresses is important to some areas of oil and gas field development plans. borehole breakouts observed in image logs and drilling-induced fractures are the main parameters for the determination of the stresses’ directions in situ. in this work, the orientations of borehole breakouts were investigated as a function of depth in oil wells a and b...

Since 2006 wastewater has been injected below the Val d'Agri Quaternary basin, the largest on-land oilfield in Europe, inducing micro-seismicity in the proximity of a high-rate injection well. In this study, we have the rare opportunity to revise a massive set of 2D/3D seismic and deep borehole data in order to investigate the relationship between the active faults that bound the basin and the ...

A Oilfield is Fluvial Facies Low Permeable Reservoir, main layer bend distributary channel sand body deposition, In order to better understand the distribution of single and remaining oil in reservoir, inspection well coring tracer tests have been carried out successively same area oilfield, based on these data, it found that, actual very different from original description both vertical plane....

With the rapid development of China's society and economy, relevant industries get good opportunities, demand for oil is increasing. The production in oilfield increasing day by day. At present, most oilfields gradually enter middle late stage water injection exploitation, which increases exploitation difficulty reduces amount. In this paper, a comprehensive analysis waterflooding reservoirs re...

The distribution characteristics of single sand body are mainly used to identify the underground with geological techniques. With help core data and well logging data, sedimentary microfacies studied in detail, so as study plane vertical. This paper studies tight reservoir a area actively discusses its development potential, aiming at obtaining more scientific reasonable research results, provi...

The Daqing oilfield was put into development in 1960. At present, it is the late stage of ultra-high water cut period. Various displacement modes coexist, and reservoir management complex difficult. In order to control decline production, number new drilling wells increases year by year, surface underground conditions are complex, shut affects production year. formation pressure decreases great...

Daqing Oilfield is rich in low permeability reservoirs. In order to fully understand the development dynamics of ultra-low reservoirs, this paper takes as an example and studies productivity fractured horizontal Wells by numerical simulation method. The results show that decreases exponentially with decrease formation permeability. well increases fracture length spacing. With increase coefficie...

The escalation of oil prices in the last years has motivated a debate about natural resources taxation. This paper uses real options approach to discuss different taxation devices for exploration & production (E&P) with focus in Brazilian petroleum sector. The concept of tax neutrality under uncertainty is established when both the project value and investment follows correlated stochastic proc...

The rapid development of social economy in our country, the industry innovation and growing demand for oil, promote people to constantly increase intensity oilfield development, time prolonged, application water injection production process cause formation pore pressure is more complex, as new adjustment well drilling work difficult. Therefore, research on dynamic prediction methods reservoir W...