崖城13-1气田凝析水产出规律实验研究及预测方法
发布时间：2019-01-23 14:47
【摘要】：崖城13-1气田为典型的高温高压凝析气藏,开发过程中未见水气井水气比持续上升,但产生原因不明。选取该气田2口典型井A4、A8井样品,通过室内实验模拟研究了地层压力和CO_2含量对凝析气中水汽含量的影响,结果表明:当地层压力从38 MPa降至3 MPa时,A4井地层流体中水气比由0.16 m~3/10~4m~3增加到1.07 m~3/10~4m~3,其中低压阶段(地层压力从12 MPa降至3 MPa)水汽含量上升量占整个阶段的71.64%;凝析气中CO_2含量从8%增加到35.39%时,初始水气比从0.24 m~3/10~4m~3增加到0.43 m~3/10~4m~3。在室内实验的基础上,建立了凝析气中水汽含量与主要影响因素的二维关系,通过Levenberg-Marquardt方法拟合得到了崖城13-1气田凝析水含量预测经验关联式,实例应用中预测结果与实际生产数据吻合程度较高。本文预测公式可用于崖城13-1气田气井凝析水产出规律预测、气井产水来源判断,以及对水侵井进行水侵动态分析等。
[Abstract]:The 13-1 gas field of YC13-1 is a typical high-temperature and high-pressure condensate gas reservoir. The gas ratio of water-gas well water is not seen in the development process, but the cause is unknown. The effect of formation pressure and CO _ 2 content on the content of water vapor in condensate gas is studied by laboratory simulation. The results show that when the formation pressure is reduced from 38 MPa to 3 MPa, the water-gas ratio in the formation fluid of the A4 well is increased from 0.16m ~ 3/ 10 ~ 4m ~ 3 to 1.07 m ~ 3/ 10 ~ 4m ~ 3. in that low-pressure stage (the formation pressure drop from 12 MPa to 3 MPa), the increase of the water vapor content is 71.64% of the whole stage; when the content of CO _ 2 in the condensate gas is increased from 8% to 35. 39%, the initial water-gas ratio is increased from 0.24m ~ 3/ 10 ~ 4m ~ 3 to 0.43m ~ 3/ 10 ~ 4m ~ 3. On the basis of the laboratory experiment, the two-dimensional relation between the water vapor content and the main influencing factors in the condensate gas is established, and the empirical correlation formula of the condensate water content prediction of the YC13-1 gas field is obtained by the Levenberg-Marquardt method, and the prediction result in the case application is in good agreement with the actual production data. The prediction formula of this paper can be used in the prediction of the formation of the condensate in the gas well of YC13-1 gas field, the determination of the water source in the gas well, and the dynamic analysis of the water invasion in the water-cut well.
【作者单位】： 中海石油(中国)有限公司湛江分公司;西南石油大学石油与天然气工程学院;
【基金】：“十二五”国家科技重大专项“海上油田丛式井网整体加密及综合调整技术(编号:2011ZX05024-002-005)”部分研究成果
【分类号】：TE372
本文编号：2413916
[Abstract]:The 13-1 gas field of YC13-1 is a typical high-temperature and high-pressure condensate gas reservoir. The gas ratio of water-gas well water is not seen in the development process, but the cause is unknown. The effect of formation pressure and CO _ 2 content on the content of water vapor in condensate gas is studied by laboratory simulation. The results show that when the formation pressure is reduced from 38 MPa to 3 MPa, the water-gas ratio in the formation fluid of the A4 well is increased from 0.16m ~ 3/ 10 ~ 4m ~ 3 to 1.07 m ~ 3/ 10 ~ 4m ~ 3. in that low-pressure stage (the formation pressure drop from 12 MPa to 3 MPa), the increase of the water vapor content is 71.64% of the whole stage; when the content of CO _ 2 in the condensate gas is increased from 8% to 35. 39%, the initial water-gas ratio is increased from 0.24m ~ 3/ 10 ~ 4m ~ 3 to 0.43m ~ 3/ 10 ~ 4m ~ 3. On the basis of the laboratory experiment, the two-dimensional relation between the water vapor content and the main influencing factors in the condensate gas is established, and the empirical correlation formula of the condensate water content prediction of the YC13-1 gas field is obtained by the Levenberg-Marquardt method, and the prediction result in the case application is in good agreement with the actual production data. The prediction formula of this paper can be used in the prediction of the formation of the condensate in the gas well of YC13-1 gas field, the determination of the water source in the gas well, and the dynamic analysis of the water invasion in the water-cut well.
【作者单位】： 中海石油(中国)有限公司湛江分公司;西南石油大学石油与天然气工程学院;
【基金】：“十二五”国家科技重大专项“海上油田丛式井网整体加密及综合调整技术(编号:2011ZX05024-002-005)”部分研究成果
【分类号】：TE372
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