杏北某区块冷输高回压井治理方法研究
发布时间：2019-03-20 18:03
【摘要】：油井回压升高会造成油井地面系统能耗增加,井下管柱交变载荷增加缩短使用寿命,油井泵效下降影响产量,部分油井回压速度升高快,发现不及时甚至造成管线堵塞,油井停产,影响油井生产。影响油井回压的主要因素为:(1)原油物性,(2)冷输半径大,(3)原油脱气严重,(4)原油结蜡严重,(5)输送介质温度低,(6)井组产液量低,(7)管线压力损失大。而井口高回压影响机采井的正常生产、降低油井产液量以及泵效,并且会对现场生产环保以及安全产生重大影响。本文针对杏北某区块的冷输井回压升高频繁,解堵工作量大的问题进行深入研究,通过改变集输介质流态,降低回压升高的频次;通过研制计量间单井回油温度监测及报警装置,能够及时发现回压异常井,做到及时解堵;对于解堵存在困难的井,应用油井聚能清蜡解堵装置进行配合解堵。通过以上各项措施,最大限度的降低冷输井回压上升速度,提高油井运行效率,增加油井产量。
[Abstract]:The increase of oil well return pressure will increase the energy consumption of oil well surface system, shorten the service life of downhole pipe string alternation load increase, decrease the pump efficiency of oil well, and increase the speed of return pressure of some oil wells, and find out that the pipeline blockage is caused by the delay and even the blockage of pipeline. The production of oil well is stopped, and the production of oil well is affected. The main factors affecting oil well return pressure are: (1) physical properties of crude oil, (2) large radius of cold transportation, (3) serious degassing of crude oil, (4) serious dewaxing of crude oil, (5) low temperature of transportation medium, and (6) low liquid production of well group. (7) the pipeline pressure loss is large. The high return pressure at the wellhead affects the normal production of the production well, reduces the fluid production and pump efficiency, and has a great influence on the environment protection and safety in the field production. In this paper, the problem of frequent rise of back pressure in cold well in a block of north Xingbei and heavy work of removing plugging is studied in depth. By changing the flow pattern of gathering medium, the frequency of rising back pressure is reduced. Through the development of temperature monitoring and alarm device for single well return in measurement room, abnormal well backpressure can be found in time and block relief can be achieved in time, and for wells with difficulty in removing plugging, the oil well gas removal device can be used to co-operate with the plugging removal device. Through the above measures, the return pressure rise rate of cold transportation well is reduced to the maximum extent, the operation efficiency of oil well is improved, and the production of oil well is increased.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE358
本文编号：2444469
[Abstract]:The increase of oil well return pressure will increase the energy consumption of oil well surface system, shorten the service life of downhole pipe string alternation load increase, decrease the pump efficiency of oil well, and increase the speed of return pressure of some oil wells, and find out that the pipeline blockage is caused by the delay and even the blockage of pipeline. The production of oil well is stopped, and the production of oil well is affected. The main factors affecting oil well return pressure are: (1) physical properties of crude oil, (2) large radius of cold transportation, (3) serious degassing of crude oil, (4) serious dewaxing of crude oil, (5) low temperature of transportation medium, and (6) low liquid production of well group. (7) the pipeline pressure loss is large. The high return pressure at the wellhead affects the normal production of the production well, reduces the fluid production and pump efficiency, and has a great influence on the environment protection and safety in the field production. In this paper, the problem of frequent rise of back pressure in cold well in a block of north Xingbei and heavy work of removing plugging is studied in depth. By changing the flow pattern of gathering medium, the frequency of rising back pressure is reduced. Through the development of temperature monitoring and alarm device for single well return in measurement room, abnormal well backpressure can be found in time and block relief can be achieved in time, and for wells with difficulty in removing plugging, the oil well gas removal device can be used to co-operate with the plugging removal device. Through the above measures, the return pressure rise rate of cold transportation well is reduced to the maximum extent, the operation efficiency of oil well is improved, and the production of oil well is increased.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE358
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