红浅1井区直井火驱燃烧区带特征
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摘要
火烧油层过程中,各区带流体及储层高温变化特征对矿场生产控制有重要影响。基于火驱区带划分理论,利用现场取心与室内实验结合的方法,对取心井储层进行了火烧区带划分,并对燃烧各区带储层进行压汞、族组分、热解以及岩矿转化分析,形成了系统的燃烧区带储层变化分析方法,认识了火驱区带内原油和岩矿转化规律,得到了基于热物性和热化学性质变化的燃烧区带划分结果。实验表明:在燃烧界面以下的结焦区并非完全结焦,处于油与焦炭共存状态,焦炭沉积有效减小了该区储层孔隙度和渗透率,稳定了燃烧前缘,阻挡了气窜;燃烧界面以上的已燃区在高温煅烧下高岭石向蒙脱石和伊利石转化,产生大量微裂缝,有利于空气快速导流。
During the process of in-situ combustion( ISC),the changed characteristics of the fluid and reservoir under high temperature have the crucial influences on the field operation. Based on the dividing theory of the ISC zone,the zones were divided for the reservoir in the coring well with the help of the integrated method between the field coring and indoor experiment,and moreover the analyses on the mercury injection,group/SARA components,pyrolysis,rock and mineral transformation were engaged for the reservoirs in each ISC zones,and then the analyzing method of the systematical reservoir changes was developed,thus the transferring laws was obtained between the crude oil and the rock-mineral in the fire flooded zones,finally the divided results of the ISC zones were achieved on the bases of the changes in the thermophysics and thermochemistry. The experiment shows that the coked zone beneath the ISC interface is not completely coked and in the coexistence state between the oil and the coke,the coke sedimentation can effectively reduce the reservoir porosity and permeability in the zone,thus the combustion front is stabilized and the gas channeling is blocked; the fired zone on the interface,the kaolinite has transformed to montmorillonite and illite under the high-temperature combustion,and then a large number of the microfractures are developed,thus the air is easy to rapid conduction and diversion.
During the process of in-situ combustion( ISC),the changed characteristics of the fluid and reservoir under high temperature have the crucial influences on the field operation. Based on the dividing theory of the ISC zone,the zones were divided for the reservoir in the coring well with the help of the integrated method between the field coring and indoor experiment,and moreover the analyses on the mercury injection,group/SARA components,pyrolysis,rock and mineral transformation were engaged for the reservoirs in each ISC zones,and then the analyzing method of the systematical reservoir changes was developed,thus the transferring laws was obtained between the crude oil and the rock-mineral in the fire flooded zones,finally the divided results of the ISC zones were achieved on the bases of the changes in the thermophysics and thermochemistry. The experiment shows that the coked zone beneath the ISC interface is not completely coked and in the coexistence state between the oil and the coke,the coke sedimentation can effectively reduce the reservoir porosity and permeability in the zone,thus the combustion front is stabilized and the gas channeling is blocked; the fired zone on the interface,the kaolinite has transformed to montmorillonite and illite under the high-temperature combustion,and then a large number of the microfractures are developed,thus the air is easy to rapid conduction and diversion.
引文
[1]宁奎,袁士宝,蒋海岩.火烧油层理论与实践[M].东营:中国石油大学出版社,2010.NING Kui, YUAN Shibao, JIANG Haiyan. In-situ combustion theory&practice[M]. Dongying:China University of Petroleum Press,2010.
[2]王艳辉,陈亚平,李少池.火烧驱油特征的实验研究[J].石油勘探与开发,2000,27(1):69-71.WANG Yanhui,CHEN Yaping,LI Shaochi. Experiment study on oil displacement by in-situ combustion[J]. Petroleum Exploration and Development,2000,27(1):69-71.
[3]关文龙,马德胜,梁金中,等.火驱储层区带特征实验研究[J].石油学报,2010,31(1):100-109.GUAN Wenlong,MA Desheng,LIANG Jinzhong,et al. Experimental research on thermodynamic characteristics of in-situ combustion zones in heavy oil reservoir[J]. Acta Petrolei Sinica,2010,31(1):100-109.
[4]史海涛,颜丹平,荐鹏,等.火驱储层变化特征及受效层段确定[J].中国矿业,2016,25(增刊1):366-369.SHI Haitao,YAN Danping,JIAN Peng,et al. Changes of reservoir and the judging method of the effective position in fire flooding[J]. China Mine Magazine,2016,25(S1):366-369.
[5]柳兴邦,李伟忠,李洪毅,等.强水敏稠油油藏火烧驱油开发试验效果评价:以王庄油田郑408块沙三段油藏为例[J].油气地质与采收率,2010,17(4):59-62.LIU Xingbang,LI Weizhong,LI Hongyi,et al. Application evaluation on in-situ combustion in strong water sensitivity heavy oil reservoir-case of Block Zheng 408,Sha III Reservoir of Wangzhuang Oilfield[J]. Petroleum Geology and Recovery Efficiency,2010,17(4):59-62.
[6] OSTAPOVICH E,ROSS M F. Fosterton Northwest:Post in-situ combustion corehole analysis[C]//SPE International Thermal Operations Symposium,1991.
[7] PAREEK R C,VELMURUGAN G P,GOYAL M. Use of side wall core as a tool for in-situ combustion monitoring[R]. SPE 185378-MS,2017.
[8]于雪峰,户昶昊.稠油油藏蒸汽吞吐转火驱开发储层变化特征研究[J].当代化工,2015,44(10):2454-2456.YU Xuefeng,HU Changhao. Research on characteristics of heavy oil reservoirs with fire-flooding after steam injection[J]. Contemporary Chemical Industry,2015,44(10):2454-2456.
[9]程宏杰,廉桂辉,毛小茵,等.火驱过程中储集层变化[J].特种油气藏,2014,21(3):132-134.CHENG Hongjie,LIAN Guihui,MAO Xiaoyin,et al. Reservoir changes in the process of in-situ combustion[J]. Special Oil&Gas Reservoirs,2014,21(3):132-134.
[10] KUZINA D M,NURGALIEV D K,MORAZOV V P,et al.Change in magnetic properties of reservoir rocks during in-situ combustion of crude[J]. Chemistry&Technology of Fuels&Oils,2015,51(1):127-132.
[11]刘雅丽,何龙,李忠权,等.岩矿在火驱条件下的物理化学变化[J].长江大学学报(自然科学版),2015,12(2):20-23.LIU Yali,HE Long,LI Zhongquan,et al. The physical-chemical changes of rock mineral under in-situ combustion condition[J].Journal of Yangtze University(Natural Science Edition),2015,12(2):20-23.
[12]张霞林,关文龙,席长丰,等.新疆油田红浅1井区火驱开采效果评价[J].新疆石油地质,2015,36(4):465-469.ZHANG Xialin,GUAN Wenlong,XI Changfeng,et al. Evaluation of recovery effect in Hongqian-1 Wellblock by in-situ combustion process in Xinjiang Oilfield[J]. Xinjiang Petroleum Geology,2015,36(4):465-469.
[13]王弥康,张毅.火烧油层热力采油[M].东营:石油大学出版社,1998:60.WANG Mikang, ZHANG Yi. Thermal recovery of in-situ combustion[M]. Dongying:China University of Petroleum Press,1988:60.
[14]刘海,潘一,冷俊.国内外火烧油层研究进展与应用[J].当代化工,2015,44(3):545-547.LIU Hai,PAN Yi,LENG Jun. Research progress and application of the in-situ combustion technology at home and abroad[J].Contemporary Chemical Industry,2015,44(3):545-547.
[2]王艳辉,陈亚平,李少池.火烧驱油特征的实验研究[J].石油勘探与开发,2000,27(1):69-71.WANG Yanhui,CHEN Yaping,LI Shaochi. Experiment study on oil displacement by in-situ combustion[J]. Petroleum Exploration and Development,2000,27(1):69-71.
[3]关文龙,马德胜,梁金中,等.火驱储层区带特征实验研究[J].石油学报,2010,31(1):100-109.GUAN Wenlong,MA Desheng,LIANG Jinzhong,et al. Experimental research on thermodynamic characteristics of in-situ combustion zones in heavy oil reservoir[J]. Acta Petrolei Sinica,2010,31(1):100-109.
[4]史海涛,颜丹平,荐鹏,等.火驱储层变化特征及受效层段确定[J].中国矿业,2016,25(增刊1):366-369.SHI Haitao,YAN Danping,JIAN Peng,et al. Changes of reservoir and the judging method of the effective position in fire flooding[J]. China Mine Magazine,2016,25(S1):366-369.
[5]柳兴邦,李伟忠,李洪毅,等.强水敏稠油油藏火烧驱油开发试验效果评价:以王庄油田郑408块沙三段油藏为例[J].油气地质与采收率,2010,17(4):59-62.LIU Xingbang,LI Weizhong,LI Hongyi,et al. Application evaluation on in-situ combustion in strong water sensitivity heavy oil reservoir-case of Block Zheng 408,Sha III Reservoir of Wangzhuang Oilfield[J]. Petroleum Geology and Recovery Efficiency,2010,17(4):59-62.
[6] OSTAPOVICH E,ROSS M F. Fosterton Northwest:Post in-situ combustion corehole analysis[C]//SPE International Thermal Operations Symposium,1991.
[7] PAREEK R C,VELMURUGAN G P,GOYAL M. Use of side wall core as a tool for in-situ combustion monitoring[R]. SPE 185378-MS,2017.
[8]于雪峰,户昶昊.稠油油藏蒸汽吞吐转火驱开发储层变化特征研究[J].当代化工,2015,44(10):2454-2456.YU Xuefeng,HU Changhao. Research on characteristics of heavy oil reservoirs with fire-flooding after steam injection[J]. Contemporary Chemical Industry,2015,44(10):2454-2456.
[9]程宏杰,廉桂辉,毛小茵,等.火驱过程中储集层变化[J].特种油气藏,2014,21(3):132-134.CHENG Hongjie,LIAN Guihui,MAO Xiaoyin,et al. Reservoir changes in the process of in-situ combustion[J]. Special Oil&Gas Reservoirs,2014,21(3):132-134.
[10] KUZINA D M,NURGALIEV D K,MORAZOV V P,et al.Change in magnetic properties of reservoir rocks during in-situ combustion of crude[J]. Chemistry&Technology of Fuels&Oils,2015,51(1):127-132.
[11]刘雅丽,何龙,李忠权,等.岩矿在火驱条件下的物理化学变化[J].长江大学学报(自然科学版),2015,12(2):20-23.LIU Yali,HE Long,LI Zhongquan,et al. The physical-chemical changes of rock mineral under in-situ combustion condition[J].Journal of Yangtze University(Natural Science Edition),2015,12(2):20-23.
[12]张霞林,关文龙,席长丰,等.新疆油田红浅1井区火驱开采效果评价[J].新疆石油地质,2015,36(4):465-469.ZHANG Xialin,GUAN Wenlong,XI Changfeng,et al. Evaluation of recovery effect in Hongqian-1 Wellblock by in-situ combustion process in Xinjiang Oilfield[J]. Xinjiang Petroleum Geology,2015,36(4):465-469.
[13]王弥康,张毅.火烧油层热力采油[M].东营:石油大学出版社,1998:60.WANG Mikang, ZHANG Yi. Thermal recovery of in-situ combustion[M]. Dongying:China University of Petroleum Press,1988:60.
[14]刘海,潘一,冷俊.国内外火烧油层研究进展与应用[J].当代化工,2015,44(3):545-547.LIU Hai,PAN Yi,LENG Jun. Research progress and application of the in-situ combustion technology at home and abroad[J].Contemporary Chemical Industry,2015,44(3):545-547.