溢气型集流伞在喇嘛甸油田的应用研究
摘要
喇嘛甸油田位于大庆长垣的最北端,它是一个受构造控制的层状砂岩短轴背斜气顶油藏,构造轴部存在气顶,最大含气面积32.3km~2,天然气地质储量99.59×10~8m~3。随着油田开发的不断深入,地层压力逐渐降低,使油井脱气现象非常严重,给油田生产动态监测带来了相当大的困难,很多油井从油、水两相流发展到油、水、气三相流,这使得两相流测试仪器已经无法满足喇嘛甸油田动态情况资料的监测要求。
本文通过大量的流饱压差与过环空找水测井精度关系试验发现,气体是影响喇嘛甸油田过环空找水测井精度的主要因素,在流饱压差绝对值大于7MPa左右时,实测含水值误差会出现突增,使流量和含水率的测量结果完全失真,造成过环空找水测试资料在喇嘛甸油田利用率偏低。
本文通过同轴线相位法环空找水仪溢气型集流伞在喇嘛甸油田的应用研究,找到一种适合喇嘛甸油田所需的油井含水率测量方法,与普通集流伞相比,采用溢气型集流伞测井时,井中向上运动的油、气、水三相流到达集流伞部位时由于密度不同而发生分离,气体将通过缝隙直接漏失到伞外,而油有相对较高的粘度,其自身漏失可以忽略,同时又阻止了水的漏失,从而极大地排除油井产气对测量的影响,提高了脱气油井动态测试资料的准确性。基于气液分离的含水率测试能够减少油田产出气对生产测井中油井液相流量和含水率测量的影响,达到实际应用的要求,有效提高油井中各测量数据的精度,为油田生产中对油井进行动态监测起到关键性的作用。
Lamadian oil deposit locates in the northernmost of Daqing placanticiline,It is a gas cup pool of bedded sandstone brachyanticline,which is dominated by structure. The axis of its structure is at the gas cup, the maximal gas bearing area is 32.3km~2,the gas in place is 99.59×10~8m~3. With the constant deepening of oil field development, the degassing appearance of oil wells getsvery seriously because of the reservoir presure’s decreasing. This appearance brings a considerable trouble to the dymanic monitoring of production. Oil ,water two-phase flow in many oil wells shrift to oil, water, gas three-phase flow. The two-phase flow testing instruments can not meet the demand of the dymanic monitoring in Lamadian oil deposit any more.
In this paper, Based on large amounts of flow full differential pressure and water logging precision ring hollow relationship found,Gas is ever lamadian oilfield water logging precision ring hollow factors, In the differential pressure flow enough about 7MPa than absolute error of measured water appears to flow and rising, moisture measurement result completely empty have caused distortion, the test data in water ring lamadian oilfield efficiency is low.through the the application research of the bubbling umbrella of coaxial line phase method annular water detector in Lamadian oil deposit. Compared with normal bubbling unbrellas, With bubbling umbrellas for the different densities. Gas leakage through the gap directly into the umbrella outside. Since the oil has the relatively high viscosity, its leakage can be ignored, at the same time it prevent the loss of water. Since this, it excludes the impact of the measurement of gas production of oil wells, and improve the accuracy of dymanic test data of degassing oil wells. based on the knockout water cut test can decrease the impact of production gas to liquid flow towater cut test in procuction logging. It attained the requirements of practical application, and improve the accuracy of the test data effectively, and it makes a vital function to dymanic monitoring of oil wells in production.
本文通过大量的流饱压差与过环空找水测井精度关系试验发现,气体是影响喇嘛甸油田过环空找水测井精度的主要因素,在流饱压差绝对值大于7MPa左右时,实测含水值误差会出现突增,使流量和含水率的测量结果完全失真,造成过环空找水测试资料在喇嘛甸油田利用率偏低。
本文通过同轴线相位法环空找水仪溢气型集流伞在喇嘛甸油田的应用研究,找到一种适合喇嘛甸油田所需的油井含水率测量方法,与普通集流伞相比,采用溢气型集流伞测井时,井中向上运动的油、气、水三相流到达集流伞部位时由于密度不同而发生分离,气体将通过缝隙直接漏失到伞外,而油有相对较高的粘度,其自身漏失可以忽略,同时又阻止了水的漏失,从而极大地排除油井产气对测量的影响,提高了脱气油井动态测试资料的准确性。基于气液分离的含水率测试能够减少油田产出气对生产测井中油井液相流量和含水率测量的影响,达到实际应用的要求,有效提高油井中各测量数据的精度,为油田生产中对油井进行动态监测起到关键性的作用。
Lamadian oil deposit locates in the northernmost of Daqing placanticiline,It is a gas cup pool of bedded sandstone brachyanticline,which is dominated by structure. The axis of its structure is at the gas cup, the maximal gas bearing area is 32.3km~2,the gas in place is 99.59×10~8m~3. With the constant deepening of oil field development, the degassing appearance of oil wells getsvery seriously because of the reservoir presure’s decreasing. This appearance brings a considerable trouble to the dymanic monitoring of production. Oil ,water two-phase flow in many oil wells shrift to oil, water, gas three-phase flow. The two-phase flow testing instruments can not meet the demand of the dymanic monitoring in Lamadian oil deposit any more.
In this paper, Based on large amounts of flow full differential pressure and water logging precision ring hollow relationship found,Gas is ever lamadian oilfield water logging precision ring hollow factors, In the differential pressure flow enough about 7MPa than absolute error of measured water appears to flow and rising, moisture measurement result completely empty have caused distortion, the test data in water ring lamadian oilfield efficiency is low.through the the application research of the bubbling umbrella of coaxial line phase method annular water detector in Lamadian oil deposit. Compared with normal bubbling unbrellas, With bubbling umbrellas for the different densities. Gas leakage through the gap directly into the umbrella outside. Since the oil has the relatively high viscosity, its leakage can be ignored, at the same time it prevent the loss of water. Since this, it excludes the impact of the measurement of gas production of oil wells, and improve the accuracy of dymanic test data of degassing oil wells. based on the knockout water cut test can decrease the impact of production gas to liquid flow towater cut test in procuction logging. It attained the requirements of practical application, and improve the accuracy of the test data effectively, and it makes a vital function to dymanic monitoring of oil wells in production.
引文
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[5]王鸿勋,水力压裂原理[M].北京,石油工业出版社,1987.
[6]万继斗,高含水油井应用堵压结合技术挖潜增产[J].中外能源,2009 ,14(07):46-48
[7]王永春.坚持政治纲领提高质量效益努力开创油田科学发展和谐发展新局面.大庆油田有限责任公司三届二次职代会暨2010年工作会议报告, 2010:15-20.
[8]牛超群.油田生产测井未来发展趋势[J].测井技术信息,1994,7(6):205-206.
[9]王鸿勋,张琪等编.采油工艺原理[M].修订版.石油工业出版社,1989.
[10]崔庆保、高臣、郭忠懿,大庆油田产出剖面测井技术研究与进展[J].测井技术,2007,31(01):30-34
[11]张淑英,环空三相流测井[J].测井技术,1994,18(2):133-137
[12]Bryant, H. L..Production Well Logging Techniques.Geophysics.1960,125(4): 905-927.
[13]郭殿杰.多相流测量在石油工业中的应用前景[J].电子仪器仪表,1997,12 (2):5-9.
[14]李海青.两相流参数检测及应用[M].浙江:浙江大学出版社,1991.
[15]苏彦勋,盛健,梁国伟.流量计量与测试[M].北京:流量计量出版社,1992.
[16]杨根生,林辉渝.流量测量仪表[M].北京:机械工业出版社,1986.
[17]杨振顺.流量仪表的性能与选用[M].北京:中国计量出版社,1996.
[18] Bryant, H. L..Production Well Logging Techniques.Geophysics. 1960,125(4): 905-927.
[19]Angeli P,Hewitt G F.Flow Structure in Horizontal Oil/water flow. Multiphase Flow, 2000,26(1):117-140. [ 20 ] Chen Xj,Guo L J.Flow Patterns and Pressure Drop in Oil-air-water Three-phase Folw through Helically Coiled Tubes. Multiphase Flow, 1999,25(1): 53-72.
[21]Rezkallah K S,Zhao L.A Flow Pattern Map for Twophase Liquid-gas Flow under Reduced Gravity Conditions.Advances in Space Research, 1995,16(1): 33-36.
[22]刘兴斌.井下油水两相流测量[D].哈尔滨工业大学博士论文,1996:23-40.
[23]王培烈、赵忠健、姚强,我国产出剖面测井回顾[J].测井技术,2001,25(03):163-167
[24]朱松、胡金海、鞠明渊等,三种含水率计的含水率响应规律分析[J].石油仪器, 2007 ,21(03):70-71
[25]王金钟,李振芳,一种新型的油井产出剖面测井仪[J].石油工业出版社,1992,117-123.
[26]徐建华,金振武,郭海敏等.测量生产井含水率的一种新方法-屏蔽式感应法[J].测井技术,1992,(4):163-166.
[27]吴锡令,波导法测量油井持水率的理论、方法和实验研究[J].地球物理学报,1996,39(3):424-430
[28]王进旗,强锡富.新型油井含水率测量仪的研制[J].仪表技术与传感器,2003(7):10-12.
[29]王进旗,强锡富,陈建明等.相位法测量油井含水率的研究[J].哈尔滨工业大学学报(自然科学版),2002,34(2):245-247(EI检索源).
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