高温高压气井试井分析软件
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摘要
常规试井分析方法与软件难以对高温高压气藏进行精准解释,影响气田勘探开发决策。结合天然气高温高压实验,形成高温高压气藏流体PVT分析方法;考虑启动压力梯度和应力敏感,建立并求解高温高压气藏渗流模型;考虑高温高压气井测试过程中地层压力的变化,建立全新广义二项式产能方程。将研究成果编程,形成南海西部高温高压气井试井分析软件。应用表明,当温度、压力和CO_2等非烃含量较高时,能确保试井解释及产能分析准确性,解决传统二项式分析中斜率负异常问题,求取无阻流量。该软件可实现对高温高压气藏精准解释,为南海西部勘探开发提供技术支持。
Conventional well test analysis methods and software are difficult to accurately interpret high-temperature and high-pressure(HTHP) gas reservoirs, thus affecting the decision-making of gas field exploration and development. Based on the HTHP experiment of natural gas, the PVT fluid analysis method of high-temperature and high-pressure gas reservoir was formed in this paper. In addition, the percolation model of HTHP gas reservoirs was established and solved considering the start-up pressure gradient and stress sensitivity. A new generalized binomial productivity equation was established considering the formation pressure change during the HTHP gas well testing. The software of well test analysis for HTHP gas wells in the west of South China Sea was formed by programming the research results. The application shows that the accuracy of well test interpretation and productivity analysis can be ensured when the content of non-hydrocarbons such as temperature, pressure and CO_2 was high, and the problem of negative slope anomaly in traditional binomial analysis can be also solved, so that the absolute open flow potential can be obtained. The software can be used to accurately interpret HTHP gas reservoirs and provide technical support for exploration and development in the western South China Sea.
Conventional well test analysis methods and software are difficult to accurately interpret high-temperature and high-pressure(HTHP) gas reservoirs, thus affecting the decision-making of gas field exploration and development. Based on the HTHP experiment of natural gas, the PVT fluid analysis method of high-temperature and high-pressure gas reservoir was formed in this paper. In addition, the percolation model of HTHP gas reservoirs was established and solved considering the start-up pressure gradient and stress sensitivity. A new generalized binomial productivity equation was established considering the formation pressure change during the HTHP gas well testing. The software of well test analysis for HTHP gas wells in the west of South China Sea was formed by programming the research results. The application shows that the accuracy of well test interpretation and productivity analysis can be ensured when the content of non-hydrocarbons such as temperature, pressure and CO_2 was high, and the problem of negative slope anomaly in traditional binomial analysis can be also solved, so that the absolute open flow potential can be obtained. The software can be used to accurately interpret HTHP gas reservoirs and provide technical support for exploration and development in the western South China Sea.
引文
[1] 张明禄,胡建国,屈雪峰.应用状态方程计算天然气偏差因子的方法评价[J].天然气工业,2003,23(2):69-71.ZHANG Minglu,HU Jianguo,QU Xuefeng.Evaluating the methods of calculating gas deviation factor by use of state equation [J].Natural Gas Industry,2003,23(2):69-71.
[2] 阳建平,肖香姣,张峰,等.几种天然气偏差因子计算方法的适用性评价[J].天然气地球科学,2007,18(1):154-157.YANG Jianping,XIAO Xiangjiao,ZHANG Feng,et al.Applicability estimation of four methods of calculating the deviation factor of natural gas [J].Natural Gas Geoscience,2007,18(1):154-157.
[3] 王刚,杨胜来,吴晓云,等.富含CO2天然气偏差因子研究[J].石油钻采工艺,2010,32(1):53-56.WANG Gang,YANG Shenglai,WU Xiaoyun,et al.Study on deviation factor of CO2 rich gas [J].Oil Drilling & Production Technology,2010,32(1):53-56.
[4] 任双双,杨胜来.富含CO2天然气井井筒偏差因子的计算方法与应用[J].陕西科技大学学报,2010,28(1):17-22.REN Shuangshuang,YANG Shenglai.Z-factor calculation method and application of the gas well richly containing CO2 [J].Journal of Shaanxi University of Science & Technology,2010,28(1):17-22.
[5] 张地洪,鄢友军,向新华,等.天然气偏差因子的实验研究[J].天然气工业,2002,22(S):107-109.ZHANG Dihong,YAN Youjun,XIANG Xinhua,et al.Experimental research on the deviation factor of natural gas [J].Natural Gas Industry,2002,22(S):107-109.
[6] 杨晓鸿,张顺喜,朱薇玲.天然气黏度精确计算新模型[J].天然气工业,2016,36(12):113-118.YANG Xiaohong,ZHANG Shunxi,ZHU Weiling.A new model for the accurate calculation of natural gas viscosity [J].Natural Gas Industry,2016,36(12):113-118.
[7] 田津杰,李春兰,黄世军,等.新的气藏拟压力计算经验公式[J].石油钻采工艺,2009,31(2):65-67.TIAN Jinjie,LI Chunlan,HUANG Shijun,et al.A new empirical formula of pseudo pressure calculation for real gas [J].Oil Drilling & Production Technology,2009,31(2):65-67.
[8] 马时刚,苏彦春,王世民,等.拟压力不同简化形式对气井产能计算的影响[J].天然气勘探与开发,2010,33(3):30-32.MA Shigang,SU Yanchun,WANG Shimin,et al.Effects of pseudo pressure in differently simplified forms on productivity calculation [J].Natural Gas Exploration and Development,2010,33(3):30-32.
[9] 高宪,王晓东,李敬函,等.压敏储层渗透率分布规律研究[J].特种油气藏,2012,19(1):88-91.GAO Xian,WANG Xiaodong,LI Jinghan,et al.Study on permeability distribution in pressure-sensitive reservoirs [J].Special Oil & Gas Reservoirs,2012,19(1):88-91.
[10] 梁景伟,金裘明.压敏油藏的压力动态摄动分析[J].岩石力学与工程学报,2002,21(S2):2422-2428.LIANG Jingwei,JIN Qiuming.Perturbation analysis of pressure transient response in stress-sensitive reservoirs[J].Chinese Journal of Rock Mechanics and Engineering 2002,21(2):2242-2248.
[11] 田冷,何顺利.压敏效应对试井曲线特征的影响分析[J].天然气地球科学,2009,20(2):297-299.TIAN Leng,HE Shunli.Effect of stress-sensitivity on well test curve characteristics in sandstone gas reservoirs [J].Natural Gas Geoscience,2009,20(2):297-299.
[12] 温伟明,朱绍鹏,李茂,等.海上异常高压气藏应力敏感特征及产能方程——以莺歌海盆地为例[J].天然气工业,2014,34(9):59-63.WEN Weiming,ZHU Shaopeng,LI Mao,et al.Stress sensitivity features and productivity equations of offshore abnormal high-pressure gas reservoirs:A case study from the Yinggehai basin [J].Natural Gas Industry,2014,34(9):59-63.
[13] 李丰辉,田楠,刘晖,等.异常高压低渗透油藏产能随有效压力的变化规律——以渤海南部BZ油田为例[J].中国海上油气,2014,26(5):58-62.LI Fenghui,TIAN Nan,LIU Hui,et al.The change of productivity with effective pressure in low-permeability oil reservoirs with abnormally-high pressure:A case of BZ oilfield in the southern Bohai sea [J].China Offshore Oil and Gas,2014,26(5):58-62.
[14] 杨滨,姜汉桥,陈民锋,等.应力敏感气藏产能方程研究[J].西南石油大学学报(自然科学版),2008,30(5):158-160.YANG Bin,JIANG Hanqiao,CHEN Minfeng,et al.Deliverability equation for stress-sensitive gas reservoir[J].Journal of Southwest Petroleum University(Science & Technology edition),2008,30 (5):158-160.
[15] 李浩,劳业春,李华,等.异常高压气藏产能测试分析方法[J].科学技术与工程,2014,14(3):16-23.LI Hao,LAO Yechun,LI Hua,et al.Analysis method of the abnormal productivity test in abnormally high pressure gas reservoirs [J].Science Technology and Engineering,2014,14(3):16-23.
[16] 马时刚,沈文杰.海上异常高压气藏产能计算研究:以锦州-气田为例[J].油气井测试,2015,24(4):32-34.MA Shigang,SHEN Wenjie.The productivity calculation of abnormal high pressure gas reservoirs — Taking Jinzhou M gas field as example[J].Well Testing,2015,24 (4):32-34.
[17] 马时刚,李波,王世民,等.一点法在锦州20-2凝析气田的应用与改进[J].油气井测试,2008,17(3):17-19.MA Shigang,LI Bo,WANG Shimin,et al.Application and improvement of one empirical on Jinzhou 20-2 condensate field [J].Well Testing,2008,17(3):17-19.
[18] 张风波,马帅,张芨强,等.广义二项式产能方程的推导与应用[J].中国海上油气,2017,29(6):87-91.ZHANG Fengbo,MA Shuai,ZHANG Jiqiang,et al.Derivation and application of generalized binomial productivity equation [J].China Offshore Oil and Gas,2017,29(6):87-91.
[2] 阳建平,肖香姣,张峰,等.几种天然气偏差因子计算方法的适用性评价[J].天然气地球科学,2007,18(1):154-157.YANG Jianping,XIAO Xiangjiao,ZHANG Feng,et al.Applicability estimation of four methods of calculating the deviation factor of natural gas [J].Natural Gas Geoscience,2007,18(1):154-157.
[3] 王刚,杨胜来,吴晓云,等.富含CO2天然气偏差因子研究[J].石油钻采工艺,2010,32(1):53-56.WANG Gang,YANG Shenglai,WU Xiaoyun,et al.Study on deviation factor of CO2 rich gas [J].Oil Drilling & Production Technology,2010,32(1):53-56.
[4] 任双双,杨胜来.富含CO2天然气井井筒偏差因子的计算方法与应用[J].陕西科技大学学报,2010,28(1):17-22.REN Shuangshuang,YANG Shenglai.Z-factor calculation method and application of the gas well richly containing CO2 [J].Journal of Shaanxi University of Science & Technology,2010,28(1):17-22.
[5] 张地洪,鄢友军,向新华,等.天然气偏差因子的实验研究[J].天然气工业,2002,22(S):107-109.ZHANG Dihong,YAN Youjun,XIANG Xinhua,et al.Experimental research on the deviation factor of natural gas [J].Natural Gas Industry,2002,22(S):107-109.
[6] 杨晓鸿,张顺喜,朱薇玲.天然气黏度精确计算新模型[J].天然气工业,2016,36(12):113-118.YANG Xiaohong,ZHANG Shunxi,ZHU Weiling.A new model for the accurate calculation of natural gas viscosity [J].Natural Gas Industry,2016,36(12):113-118.
[7] 田津杰,李春兰,黄世军,等.新的气藏拟压力计算经验公式[J].石油钻采工艺,2009,31(2):65-67.TIAN Jinjie,LI Chunlan,HUANG Shijun,et al.A new empirical formula of pseudo pressure calculation for real gas [J].Oil Drilling & Production Technology,2009,31(2):65-67.
[8] 马时刚,苏彦春,王世民,等.拟压力不同简化形式对气井产能计算的影响[J].天然气勘探与开发,2010,33(3):30-32.MA Shigang,SU Yanchun,WANG Shimin,et al.Effects of pseudo pressure in differently simplified forms on productivity calculation [J].Natural Gas Exploration and Development,2010,33(3):30-32.
[9] 高宪,王晓东,李敬函,等.压敏储层渗透率分布规律研究[J].特种油气藏,2012,19(1):88-91.GAO Xian,WANG Xiaodong,LI Jinghan,et al.Study on permeability distribution in pressure-sensitive reservoirs [J].Special Oil & Gas Reservoirs,2012,19(1):88-91.
[10] 梁景伟,金裘明.压敏油藏的压力动态摄动分析[J].岩石力学与工程学报,2002,21(S2):2422-2428.LIANG Jingwei,JIN Qiuming.Perturbation analysis of pressure transient response in stress-sensitive reservoirs[J].Chinese Journal of Rock Mechanics and Engineering 2002,21(2):2242-2248.
[11] 田冷,何顺利.压敏效应对试井曲线特征的影响分析[J].天然气地球科学,2009,20(2):297-299.TIAN Leng,HE Shunli.Effect of stress-sensitivity on well test curve characteristics in sandstone gas reservoirs [J].Natural Gas Geoscience,2009,20(2):297-299.
[12] 温伟明,朱绍鹏,李茂,等.海上异常高压气藏应力敏感特征及产能方程——以莺歌海盆地为例[J].天然气工业,2014,34(9):59-63.WEN Weiming,ZHU Shaopeng,LI Mao,et al.Stress sensitivity features and productivity equations of offshore abnormal high-pressure gas reservoirs:A case study from the Yinggehai basin [J].Natural Gas Industry,2014,34(9):59-63.
[13] 李丰辉,田楠,刘晖,等.异常高压低渗透油藏产能随有效压力的变化规律——以渤海南部BZ油田为例[J].中国海上油气,2014,26(5):58-62.LI Fenghui,TIAN Nan,LIU Hui,et al.The change of productivity with effective pressure in low-permeability oil reservoirs with abnormally-high pressure:A case of BZ oilfield in the southern Bohai sea [J].China Offshore Oil and Gas,2014,26(5):58-62.
[14] 杨滨,姜汉桥,陈民锋,等.应力敏感气藏产能方程研究[J].西南石油大学学报(自然科学版),2008,30(5):158-160.YANG Bin,JIANG Hanqiao,CHEN Minfeng,et al.Deliverability equation for stress-sensitive gas reservoir[J].Journal of Southwest Petroleum University(Science & Technology edition),2008,30 (5):158-160.
[15] 李浩,劳业春,李华,等.异常高压气藏产能测试分析方法[J].科学技术与工程,2014,14(3):16-23.LI Hao,LAO Yechun,LI Hua,et al.Analysis method of the abnormal productivity test in abnormally high pressure gas reservoirs [J].Science Technology and Engineering,2014,14(3):16-23.
[16] 马时刚,沈文杰.海上异常高压气藏产能计算研究:以锦州-气田为例[J].油气井测试,2015,24(4):32-34.MA Shigang,SHEN Wenjie.The productivity calculation of abnormal high pressure gas reservoirs — Taking Jinzhou M gas field as example[J].Well Testing,2015,24 (4):32-34.
[17] 马时刚,李波,王世民,等.一点法在锦州20-2凝析气田的应用与改进[J].油气井测试,2008,17(3):17-19.MA Shigang,LI Bo,WANG Shimin,et al.Application and improvement of one empirical on Jinzhou 20-2 condensate field [J].Well Testing,2008,17(3):17-19.
[18] 张风波,马帅,张芨强,等.广义二项式产能方程的推导与应用[J].中国海上油气,2017,29(6):87-91.ZHANG Fengbo,MA Shuai,ZHANG Jiqiang,et al.Derivation and application of generalized binomial productivity equation [J].China Offshore Oil and Gas,2017,29(6):87-91.