低渗砂岩气藏地质特征和开发对策探讨
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摘要
低渗砂岩气藏的地质特征主要表现为非均质性严重、孔喉半径小、泥质含量高和含水饱和度高 ;其开发特点为 :气井自然产能普遍较低且分布极不均衡 ,生产压差大 ,稳产条件差 ,大部分井投产前需要进行加砂压裂改造 ;其相应的开发对策是开展气藏精细描述 ,确定各类储层的分布范围 ;在布井方式上采用非均匀高点布井和加密井网布井方式 ;加强钻井、完井过程中的气层保护措施 ;提高加砂压裂效果 ,改善储层渗流能力 ;做好开发早中期工作 ,开采后期采用增压开采和排水采气开采方式以延长气井生产寿命。
The main geologic characteristics of low permeability sandstone gas reservoirs are high antisotropic,small pore-throats radius,high shale content and high water saturation.Its exploitation's characteristics are:the natural productivity of gas wells are generally low and distribution is non-equilibrium,the producing pressure differential is high ,the condition of stable production are bad,it is necessary for a majority of gas wells to sand fracturing before they are putted into production.Its offtake strategy are:the techniques of gas reservoirs fine description are used to determine the distribution area of all sorts of reservoirs,dense well pattern in high-permeability area and infill drilling are used in hole pattern,the technologies of preventing gas reservoir are emphasized during drilling and well completion,the effect of sand fracturing is increased to improve permeable capacity of gas reservoir,and adopting superchange method and drainage gas recovery method prolong producing time of gas well in late production period.
The main geologic characteristics of low permeability sandstone gas reservoirs are high antisotropic,small pore-throats radius,high shale content and high water saturation.Its exploitation's characteristics are:the natural productivity of gas wells are generally low and distribution is non-equilibrium,the producing pressure differential is high ,the condition of stable production are bad,it is necessary for a majority of gas wells to sand fracturing before they are putted into production.Its offtake strategy are:the techniques of gas reservoirs fine description are used to determine the distribution area of all sorts of reservoirs,dense well pattern in high-permeability area and infill drilling are used in hole pattern,the technologies of preventing gas reservoir are emphasized during drilling and well completion,the effect of sand fracturing is increased to improve permeable capacity of gas reservoir,and adopting superchange method and drainage gas recovery method prolong producing time of gas well in late production period.
引文
[1] 刘小平,吴欣松,王志章,等我国大中型气田主要气藏类型与分布[J]天然气工业,20021
[2] 王金琪中国大型致密砂岩含气区展望[J]天然气工业,20001
[3] 马新华,钱凯,魏国齐,等关于21世纪初叶中国天然气勘探方向的初步认识[J]石油勘探与开发,20006
[4] 李士伦我国气田、凝析气田开发技术展望[J]天然气工业,19971
[5] 段文,黄绪德,谢雄光,等致密碎屑岩气藏模型研究[J]河南石油,20015
[6] 李文魁,刘长松,沈治凯,等致密气藏开采技术初探[J]特种油气藏,20028
[7] 张金川,金之钧,庞雄奇深盆气藏开发方式初探[J]西安石油学院学报(自然科学版),20007
[8] 唐建明川西坳陷致密非均质气藏储层空间展布刻划[J]天然气工业,20027
[9] 青永固川西致密碎屑岩气藏水力压裂工艺技术进展[J]天然气工业,20025
[10]杨振武,谢用良,唐建明多井约束地震地层反演技术在川西致密砂岩气藏描述中的应用[J]物探化探计算技术,20002
[11]吴志均,唐红君,安凤山川西新场致密砂岩气藏层理缝成因探讨[J]石油勘探与开发,20034
[12]匡建超,徐国盛,王允诚,等致密碎屑岩储层裂缝和产能预测的单井建模—以XZ气田沙溪庙组为例[J]砂物岩石,20016
[13]何自新,付金华,席胜利,等苏里格大气田成藏地质特征[J]石油学报,20033
[14]编写组中国五类气藏开发模式[M]北京:石油工业出版社,199510
[15]编写组国外六类气藏开发模式及工艺技术[M]北京:石油工业出版社,199512
[2] 王金琪中国大型致密砂岩含气区展望[J]天然气工业,20001
[3] 马新华,钱凯,魏国齐,等关于21世纪初叶中国天然气勘探方向的初步认识[J]石油勘探与开发,20006
[4] 李士伦我国气田、凝析气田开发技术展望[J]天然气工业,19971
[5] 段文,黄绪德,谢雄光,等致密碎屑岩气藏模型研究[J]河南石油,20015
[6] 李文魁,刘长松,沈治凯,等致密气藏开采技术初探[J]特种油气藏,20028
[7] 张金川,金之钧,庞雄奇深盆气藏开发方式初探[J]西安石油学院学报(自然科学版),20007
[8] 唐建明川西坳陷致密非均质气藏储层空间展布刻划[J]天然气工业,20027
[9] 青永固川西致密碎屑岩气藏水力压裂工艺技术进展[J]天然气工业,20025
[10]杨振武,谢用良,唐建明多井约束地震地层反演技术在川西致密砂岩气藏描述中的应用[J]物探化探计算技术,20002
[11]吴志均,唐红君,安凤山川西新场致密砂岩气藏层理缝成因探讨[J]石油勘探与开发,20034
[12]匡建超,徐国盛,王允诚,等致密碎屑岩储层裂缝和产能预测的单井建模—以XZ气田沙溪庙组为例[J]砂物岩石,20016
[13]何自新,付金华,席胜利,等苏里格大气田成藏地质特征[J]石油学报,20033
[14]编写组中国五类气藏开发模式[M]北京:石油工业出版社,199510
[15]编写组国外六类气藏开发模式及工艺技术[M]北京:石油工业出版社,199512
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