基于注入与产出过程中的井筒温度场分析
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摘要
针对油气藏体积压裂和生产过程中的油/套管异常变形现象。根据油气藏井身结构及储层特点,考虑流体温度、压力与流体物性参数的耦合,结合井筒流体传热特性和井筒对地层传热特点,建立井筒几何模型,划分网格,运用质量、动量、能量守恒原理及热力学第一定律,建立方程并给出边界条件。得到了注入与产出时井筒温度场分布,揭示了注入流体与产出流体速度对井筒温度场的影响,搞清了在不同地层温度梯度下的井筒温度场分布,从而指导低渗透油气藏体积压裂管柱设计与压裂生产参数优化,提高液体注入与油气生产过程中井筒和环空压力场与温度场分析的科学性,避免环空压力异常对管柱及井筒造成破坏,保证压裂和生产的安全性与稳定性。
Oil/casing abnormal deformation phenomenon usually appears on the oil and gas reservoir volume fracturing and production process.According to the characteristics of reservoir structure and reservoir,considering the coupling of fluid temperature, pressure and fluid properties,combined with the heat transfer characteristics of wellbore fluid and the heat transfer characteristics of wellbore,the geometrical model of wellbore is established,and the grid is divided into mass and momentum.It uses the principle of conservation of energy andthe first law of thermodynamics to establish the equations and give the boundary conditions.The distribution of the temperature field of the wellbore is obtained at the injection and output,and reveals the influence of the velocity of the injected fluid and the output fluid on the temperature field of the wellbore.It clarifies the distribution of the temperature field in the wellbore under different temperature gradient to guide the low permeability oil and gas reservoir fracturing string design and fracturing production parameter optimization,and it will improve the analysis of the scientific nature on the liquid injection and oil and gas production process in the wellbore and annulus pressure field and temperature field,and avoids annulus pressure abnormalities on the pipe and wellbore damage, and ensures fracturing and production of the safety and stability.
Oil/casing abnormal deformation phenomenon usually appears on the oil and gas reservoir volume fracturing and production process.According to the characteristics of reservoir structure and reservoir,considering the coupling of fluid temperature, pressure and fluid properties,combined with the heat transfer characteristics of wellbore fluid and the heat transfer characteristics of wellbore,the geometrical model of wellbore is established,and the grid is divided into mass and momentum.It uses the principle of conservation of energy andthe first law of thermodynamics to establish the equations and give the boundary conditions.The distribution of the temperature field of the wellbore is obtained at the injection and output,and reveals the influence of the velocity of the injected fluid and the output fluid on the temperature field of the wellbore.It clarifies the distribution of the temperature field in the wellbore under different temperature gradient to guide the low permeability oil and gas reservoir fracturing string design and fracturing production parameter optimization,and it will improve the analysis of the scientific nature on the liquid injection and oil and gas production process in the wellbore and annulus pressure field and temperature field,and avoids annulus pressure abnormalities on the pipe and wellbore damage, and ensures fracturing and production of the safety and stability.
引文
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[13]NORSOK D-010.Well Integrity in Drilling and Well Operations[S].2004.
[14]API Recommended Practice 90(API RP90).Annular Casing Pressure Management for Offshore Wells[S].First Edition,August,2006.
[2]Hasan A R,Kabir C S,Lin D.Analytic Wellbore Temperature Model for Transient Gas-Well Testing[J].Spe Reservoir Evaluation&Engineering,2005,8(3):240-247.
[3]王树平,李治平,陈平,等.高温油气引发套管附加载荷预防模型[J].天然气工业,2007,27(9):84-86.
[4]Seth G,Reynolds A C,Mahadevan J.Numerical Model for Interpretation of Distributed-Temperature-Sensor Data During Hydraulic Fracturing[J].Psychology in the Schools,2010,47(2):135-152.
[5]Rashid A S.Mukhaizna Steam Injectors Thermal Efficiency&Insulated Tubing Pilot Evaluation[C].SPE Middle East Unconventional Resources Conference and Exhibition,Muscat,Oman,SPE-172930-MS,2015,January,26-28.
[6]Vargo R F,Payne M,Faul R,et al.Practical and Successful Prevention of Annular Pressure Buildup on the Marlin Project[J].Spe Drilling&Completion,2003,18(3):228-234.
[7]Ellis R C,Jr D G,Gibson D H,et al.Marlin Failure Analysis and Redesign,Part 2,Redesign[J].Spe Drilling&Completion,2004,19(2):112-119.
[8]Oudeman P,Kerem M.Transient Behavior of Annular Pressure Build-up in HP/HT Wells[C].Abu Dhabi International Conference and Exhibition,Abu Dhabi,United Arab Emirates,SPE88735,2004,October,10-13.
[9]车争安,张智,施太和,等.高温高压含硫气井环空流体热膨胀带压机理[J].天然气工业,2010,30(2):88-90.
[10]Williamson R,Sanders W,Jakabosky T,et al.Control of Contained-Annulus Fluid Pressure Buildup[C].Society of Petroleum Engineers,2003:639-647.
[11]Azzola J H,Tselepidakis D P,Pattillo P D,et al.Application of Vacuum-insulated Tubing to Mitigate Annular Pressure Buildup[J].SPE Drilling&Completion,2007,22(1):46-51.
[12]Hasan A R,Izgec B,Kabir C S.Ensuring Sustained Production by Managing Annular-pressure Buildup[C].EUROPEC/EAGE Conference and Exhibition,Amsterdam,The Netherlands,SPE 121754,2009,June,8-11.
[13]NORSOK D-010.Well Integrity in Drilling and Well Operations[S].2004.
[14]API Recommended Practice 90(API RP90).Annular Casing Pressure Management for Offshore Wells[S].First Edition,August,2006.