共采技术现状与在煤系气共采中的适应性分析
发布时间：2019-03-10 18:32
【摘要】：我国多数煤系气地区成藏致密,层间呈叠置状,单层开发难度较大且经济效益不显著,于是提出开发适用于煤系气多气共采的技术尤为必要。从共采的角度分析,共采技术分为同压力体系共采和同井筒分压力体系共采两类。对目前油气田常用的同井筒分压共采技术进行了总结和分类,分别从抽油泵、井下管柱及排采方式的不同对现有分压共采技术现状进行了归类整理,给出其特点和在煤系气开发中的适用性;并通过类比这些技术的特征并结合煤系气自身特性,得出了现有技术共采煤系气将可能出现的问题,提出了侧重构造井下压力体系及优化产物流体通道的研究方向,给出了煤系气共采技术管柱设计需要注意的问题,这对于煤系气多气共采,有所帮助。
[Abstract]:In most coal measure gas areas in China, the reservoir is dense and the interlayer is superimposed. The single layer development is difficult and the economic benefit is not obvious. Therefore, it is necessary to develop the technology suitable for coal measure gas multi-gas co-mining. From the point of view of co-production, the co-production technology can be divided into the same pressure system and the same wellbore pressure system. This paper summarizes and classifies the common well-bore partial pressure and co-production technology used in oil and gas fields at present, and classifies and sorts the existing partial pressure co-production technology from the different aspects of subsurface oil pump, downhole pipe string and discharge production mode, respectively. Its characteristics and applicability in coal series gas development are given. By analogizing the characteristics of these technologies and combining with the characteristics of coal measure gas, the possible problems will arise in the co-mining of coal measure gas by the existing technology, and the research direction of constructing downhole pressure system and optimizing the fluid channel of products is put forward. The problems needing attention in pipe string design of coal-measure gas co-mining technology are given, which is helpful to multi-gas co-mining of coal series gas.
【作者单位】： 中国石油大学(华东)机电工程学院;中联煤层气有限责任公司;
【基金】：国家油气科技重大专项资助项目(2016ZX05066004-002,2017ZX05042003-001)
【分类号】：TE37
本文编号：2437889
[Abstract]:In most coal measure gas areas in China, the reservoir is dense and the interlayer is superimposed. The single layer development is difficult and the economic benefit is not obvious. Therefore, it is necessary to develop the technology suitable for coal measure gas multi-gas co-mining. From the point of view of co-production, the co-production technology can be divided into the same pressure system and the same wellbore pressure system. This paper summarizes and classifies the common well-bore partial pressure and co-production technology used in oil and gas fields at present, and classifies and sorts the existing partial pressure co-production technology from the different aspects of subsurface oil pump, downhole pipe string and discharge production mode, respectively. Its characteristics and applicability in coal series gas development are given. By analogizing the characteristics of these technologies and combining with the characteristics of coal measure gas, the possible problems will arise in the co-mining of coal measure gas by the existing technology, and the research direction of constructing downhole pressure system and optimizing the fluid channel of products is put forward. The problems needing attention in pipe string design of coal-measure gas co-mining technology are given, which is helpful to multi-gas co-mining of coal series gas.
【作者单位】： 中国石油大学(华东)机电工程学院;中联煤层气有限责任公司;
【基金】：国家油气科技重大专项资助项目(2016ZX05066004-002,2017ZX05042003-001)
【分类号】：TE37
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