基于能量守恒的螺杆泵动态充满程度计算模型及应用
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摘要
螺杆泵举升作为主要举升方式已得到广泛应用,但受举升介质及工作参数影响螺杆泵性能不能有效发挥,限制了其泵效最大化。针对螺杆泵采油存在的充不满现象,以螺杆泵泵下油管、吸入口和泵腔内液面为研究对象,分别建立相邻两截面间的伯努利方程,确定泵腔内液面高度;根据转子运动规律,建立泵腔打开体积模型和进入流体体积模型,结合泵腔内液面高度确定螺杆泵的动态充满程度;通过对不同参数的模拟计算分析,动液面、转速是影响螺杆泵充不满的主要因素。现场5口井实际生产效果证明,建立的计算模型误差小于10. 3%。
The poor cognition of progressive cavity pump characteristic limits its further development. In order to determine the mechanism of progressive cavity pump full level,three section( the section of the tube under the pump,the section of pump inlet and the interface between oil and gas in the opened cavity) were chosen,and Bernoulli equation were established between the adjacent sections. The height of the liquid in the opened cavity is confirmed combining gas state equations. According to the periodic reciprocating motion of the rotor,the numerical models for the opened cavity volume and the pumping liquid volume were established,and then the dynamic full level of progressive cavity pump was obtained combining the height of the liquid level in the opened cavity. The results indicate that the main factors upon the progressive cavity pump full level are the height of dynamic liquid level,revolving speed. Through the test of 5 wells,the calculation error of the model is less than 10. 3%.
The poor cognition of progressive cavity pump characteristic limits its further development. In order to determine the mechanism of progressive cavity pump full level,three section( the section of the tube under the pump,the section of pump inlet and the interface between oil and gas in the opened cavity) were chosen,and Bernoulli equation were established between the adjacent sections. The height of the liquid in the opened cavity is confirmed combining gas state equations. According to the periodic reciprocating motion of the rotor,the numerical models for the opened cavity volume and the pumping liquid volume were established,and then the dynamic full level of progressive cavity pump was obtained combining the height of the liquid level in the opened cavity. The results indicate that the main factors upon the progressive cavity pump full level are the height of dynamic liquid level,revolving speed. Through the test of 5 wells,the calculation error of the model is less than 10. 3%.
引文
1 Wu B C,Li X. The special successful PCP applications in heavy oilfield:136817[R]. Edmonton:SPE,2010
2 Zhou D S,Yuan H. Design of progressive cavity pump wells:113324[R]. Houston:SPE,2008
3 Robles J,Perez M,Bettenson J,et al. Design and application of charge PCP systems in high GVF heavy oil wells:153038[R]. Edmonton:SPE,2010
4 夏惠芬,李福军.有杆泵动态泵充满程度的计算[J].石油学报,1995,16(4):167-173Xia Huifen,Li Fujun. The calculation for the dynamic full level of the sucker-rod pump[J]. Acta Petrolei Sinica,1995,16(4):167-173
5 郑俊德,阎熙照,曹广胜,等.聚合物驱杆式泵排量系数计算与分析[J].石油学报,1991,20(1):88-92Zheng Junde,Yan Xizhao,Cao Guangsheng,et al. The calculation and analysis of discharge coefficient for suck rod pump nuder polymer flooding[J]. Acta Petrolei Sinica,1991,20(1):88-92
6 狄敏燕,杨海滨,李汉周,等.有杆抽油泵充满程度计算研究[J].复杂油气藏,2011,4(4):71-75Di Minyan,Yang Haibin,Li Hanzhou,et al. Study on the calculation of fulling degree of sucker rod pump[J]. Complex Hydrocarbon Reservoirs,2011,4(4):71-75
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8 杜秀华,何庆旭,韩国有,等.基于SolidWorks的单头采油螺杆泵有限元分析及其线型优化[J].科学技术与工程,2008,8(8):1980-1983,1993Du Xiuhua,He Qingxu,Han Guoyou,et al. Finite element analysis and parameter optimization of single PCP based on solidworks[J].Science Technology and Engineering,2008,8(8):1980-1983,1993
9 郭颖.采油单螺杆泵接触压力有限元分析[J].科学技术与工程,2010,10(19):4778-4780,4800Guo Ying. Finite element analysis of contact pressure for single PCPs[J]. Science Technology and Engineering,2010,10(19):4778-4780,4800
10 孙艳萍,屈文涛,康晓清,等.煤层气排采螺杆泵定转子接触有限元分析[J].科学技术与工程,2016,16(23):22-28Sun Yanping,Qu Wentao,Kang Xiaoqing,et al. The finite element analysis of stator and rotor of screw pump in CBM drainage[J]. Science Technology and Engineering,2016,16(23):22-28
11 郑磊,吴晓东,岑学齐,等.不同配合方式螺杆泵的工作特性探讨[J].科学技术与工程,2018,18(11):67-73Zheng Lei,Wu Xiaodong,Cen Xueqi,et al. Study on performance of PCPs in different fit modes[J]. Science Technology and Engineering,2018,18(11):67-73
12 孙春龙.采油螺杆泵漏失机理研究及三维仿真技术实现[J].石油矿场机械,2012,41(5):5-9Sun Chunlong. Slippage mechanism of progressive cavity pump and three dimensional simulation[J]. Oil Field Equipment,2012,41(5):5-9
13 盛国富,叶鹏,李云飞,等.螺杆泵井合理沉没度泵况控制图研究与应用[J].石油天然气学报:江汉石油学院学报,2005,27(1):289-290,299Sheng Guofu,Ye Peng,Li Yunfei,et al. Development and application of rational submersion degree control diagram in screw pumping wells[J]. Journal of Oil and Gas Technology:Journal of Jianghan Petroleum Institute,2005,27(1):289-290,299
2 Zhou D S,Yuan H. Design of progressive cavity pump wells:113324[R]. Houston:SPE,2008
3 Robles J,Perez M,Bettenson J,et al. Design and application of charge PCP systems in high GVF heavy oil wells:153038[R]. Edmonton:SPE,2010
4 夏惠芬,李福军.有杆泵动态泵充满程度的计算[J].石油学报,1995,16(4):167-173Xia Huifen,Li Fujun. The calculation for the dynamic full level of the sucker-rod pump[J]. Acta Petrolei Sinica,1995,16(4):167-173
5 郑俊德,阎熙照,曹广胜,等.聚合物驱杆式泵排量系数计算与分析[J].石油学报,1991,20(1):88-92Zheng Junde,Yan Xizhao,Cao Guangsheng,et al. The calculation and analysis of discharge coefficient for suck rod pump nuder polymer flooding[J]. Acta Petrolei Sinica,1991,20(1):88-92
6 狄敏燕,杨海滨,李汉周,等.有杆抽油泵充满程度计算研究[J].复杂油气藏,2011,4(4):71-75Di Minyan,Yang Haibin,Li Hanzhou,et al. Study on the calculation of fulling degree of sucker rod pump[J]. Complex Hydrocarbon Reservoirs,2011,4(4):71-75
7 王卫阳,万国强,吕新波.基于动态模拟的有杆泵充满程度计算新方法[J].石油机械,2012,40(3):67-71Wang Weiyang,Wan Guoqiang,Lv Xinbo. The dynamic simulationbased new method to calculate the full level of sucker rod pump[J].China Petroleum Machinery,2012,40(3):67-71
8 杜秀华,何庆旭,韩国有,等.基于SolidWorks的单头采油螺杆泵有限元分析及其线型优化[J].科学技术与工程,2008,8(8):1980-1983,1993Du Xiuhua,He Qingxu,Han Guoyou,et al. Finite element analysis and parameter optimization of single PCP based on solidworks[J].Science Technology and Engineering,2008,8(8):1980-1983,1993
9 郭颖.采油单螺杆泵接触压力有限元分析[J].科学技术与工程,2010,10(19):4778-4780,4800Guo Ying. Finite element analysis of contact pressure for single PCPs[J]. Science Technology and Engineering,2010,10(19):4778-4780,4800
10 孙艳萍,屈文涛,康晓清,等.煤层气排采螺杆泵定转子接触有限元分析[J].科学技术与工程,2016,16(23):22-28Sun Yanping,Qu Wentao,Kang Xiaoqing,et al. The finite element analysis of stator and rotor of screw pump in CBM drainage[J]. Science Technology and Engineering,2016,16(23):22-28
11 郑磊,吴晓东,岑学齐,等.不同配合方式螺杆泵的工作特性探讨[J].科学技术与工程,2018,18(11):67-73Zheng Lei,Wu Xiaodong,Cen Xueqi,et al. Study on performance of PCPs in different fit modes[J]. Science Technology and Engineering,2018,18(11):67-73
12 孙春龙.采油螺杆泵漏失机理研究及三维仿真技术实现[J].石油矿场机械,2012,41(5):5-9Sun Chunlong. Slippage mechanism of progressive cavity pump and three dimensional simulation[J]. Oil Field Equipment,2012,41(5):5-9
13 盛国富,叶鹏,李云飞,等.螺杆泵井合理沉没度泵况控制图研究与应用[J].石油天然气学报:江汉石油学院学报,2005,27(1):289-290,299Sheng Guofu,Ye Peng,Li Yunfei,et al. Development and application of rational submersion degree control diagram in screw pumping wells[J]. Journal of Oil and Gas Technology:Journal of Jianghan Petroleum Institute,2005,27(1):289-290,299