Oil and gas will remain the most important source of energy for foreseeable future according to DNV’s Energy Transition Outlook 2021, there is an urgent need improve oil recovery with less carbon footprint meet demands. For extraction from reservoir, horizontal drilling being applied due its higher rate. These wells are advanced equipped downhole Flow Control Devices (FCDs), sand screens, zonal...

First, the measuring principle, the weight function, and the magnetic field of the novel downhole inserted electromagnetic flowmeter (EMF) are described. Second, the basic design of the EMF is described. Third, the dynamic experiments of two EMFs in oil-water two-phase flow are carried out. The experimental errors are analyzed in detail. The experimental results show that the maximum absolute v...

For the past three decades the quantity of petroleum (both oil and oil plus gas) found per foot of drilling effort in the United States for any given year can be expressed as a secular decrease of about 2 percent per year combined with an inverse function of drilling effort for that year. Extrapolation of energy costs and gains from petroleum drilling and extraction indicates that drilling for ...

The Zhangjiakou area is rich in geothermal resources, and many counties the region have discovered low-temperature geothermal. Structurally, Huailai County, City located at intersection of Zhangjiakou-Penglai Fault Zone Shanxi Basin (or Fenwei Seismic Tectonic Zone), namely Yanqing-Huailai (Yanhuai Basin). A large amount resource investigation research works has preliminarily defined that good ...

this investigation presents the effect of various parameters on foam stability and its rheological properties. the underlying idea of this experiment is generating of drilling foam with uniform bubbles. the main problem of foam using is controlling its stability during field application. the most important parameters which cause instability in foam are gravity drainage, gas diffusion and bubble...

voltage fluctuation is one of the important types of power quality aspects originated from heavy fluctuating loads. this phenomenon can influence the behavior of induction motors, produce excessive vibration and increase the ohmic losses. in this paper a simplified model to evaluate the electrical characteristics of three phase induction motors under voltage fluctuation conditions will be prese...

Abstract— Due to the superior physical and mechanical properties Glass fiber-reinforced (GFRP) composite materials are very attractive for applications like aerospace and air craft structural components. This results a large number of research papers on machining of these composite laminates. Out of all the machining operations, most commonly used operation is drilling. However, drilling operat...