ADCO's Business Plan demands a high number of wells to be delivered in development Fields for better reservoir sweeping efficiency such as: Infill drilling, injector's patterns and maintenance work-over operations in the end of each year, that result in increase of 50% of rigs fleet to meet the DWS (Drilling work over schedule) requirements in the next 5 years because the expansion in production will be from 1.4 MM bpd to 1.8 MM bpd. The rig move is an important component in the DWS as the average rig move between the wells is 4.6 days which in total 110 days and that is our driver to minimize the time consumed in rig move and gain more days for BP This Presentation will develop a study case for rig move optimization in BAB and ASAB Fields. In general two possible operation to move rigs are followed in our company: Mast-Up when the road allow us to do that, or conventional movement Mast-Down, if there are any obstacle in the way, like power lines, conductor lines or limited spaces (these movement requires additional time for laying down and rigging up the mast).
Ensuring acceptable temperature field non-uniformity at the outlet of the combustion chamber is a very important requirement that determines the reliability and durability of the turbine. The formation of non-uniformity is determined by the nature of the interaction of the secondary air jets with the gas flow in the flame tube and depends on many factors, both structural and operational parameters. In this paper, we propose to evaluate the non-uniformity of the temperature fields at the outlet of the combustion chamber using a mixing coefficient that determines the quality of mixing jets of secondary air with a gas stream in the mixer. Based on the equation of turbulent diffusion during the flow of an annular jet into a limited space, an analytical dependence is obtained in the work that allows one to calculate the mixing process in the combustion chamber. The connection of the mixing process with the formation of temperature fields is established. Based on this, dependences are obtained for calculating the nonuniformity of temperature fields. Their satisfactory agreement with experimental data was shown. The found dependences allow one to analyze the influence of various parameters on the non-uniformity of temperature fields and accelerate the refinement of the combustion chamber by this parameter. The possibility of predicting the effect of various parameters on the unevenness of temperature fields is shown. The presence of the optimal value of the degree of opening of the mixer is confirmed, at which the minimum value of the unevenness of the temperature field at the outlet of the combustion chamber is achieved. Therefore, the analytical relationships found in the work allow optimizing the design of the mixer in the combustion chamber and the distribution of secondary air in it in order to reduce the unevenness of the temperature fields at the outlet of the combustion chamber.
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