模拟井况下压裂管柱力学分析及压裂设计研究
发布时间：2018-09-11 21:44
【摘要】：油气产业作为上世纪乃至本世纪的占据支撑性地位的能源产业,可预见的未来期限内具有无可替代的地位。日益消耗下,国内大多油气井的开采进入高投入、低产出的中后期,低渗透井的开采难度越来越大,特低渗透井情况更不容乐观。如何使油气开采能够坚持高速度、高采收率和低投入并行的状态,进一步高效掘取各种油气藏尤其是复杂条件下藏储难动用的油气藏被日益重视。行业内,沿习传统采用人工注水压裂等增产增注手段强制性对储层进行人工改造,以此来增加油气资源的渗透率和出产率,达到高效增产增收的目的。油水井压裂施工后可达到改良近井带的渗流状态、增加采收的目的,提升油气出产率。因而对水力压裂技术给予广泛深入的实井验证和深入严谨的研究,这对油气产业的发展意义深远。压裂作业中的管柱及其配套工具是压裂施工的主体,决定施工成效,压裂工艺的整体设计更是关系到压裂的可行性和投入产出比,对实际的压裂施工参数选择和进程决断具有重要指导意义,值得深入研究。针对本课题研究内容,查阅国内外本课题相关研究文献的基础上,首先对压裂管柱国内外的研究现状进行了简单介绍。文章重点针对压裂管柱进行研究,利用传统力学分析,借鉴钻井管柱力学研究方法,首先研究了压裂管柱的三轴应力状态,基于此,后续对压裂管柱进行了强度分析与安全性校核。第四章在参考前人研究成果的基础上,对比分析管柱轴向变形的影响因素,从力学角度出发,综合研究了压裂管柱在五种基本效应下产生的轴向变形,得到不同基本效应影响下管柱的变形计算结果。针对不同工况下管柱的实际数据,对前述计算模型进行了计算验证和举例。最后从压裂工艺全局角度出发,基于专业压裂设计软件,利用虚拟井况具体参数,对模拟井进行了压裂设计,并与原井压裂结果进行对比,为压裂实际作业提供一定参考。
[Abstract]:As a supporting energy industry in last century and even in this century, oil and gas industry has an irreplaceable position in the foreseeable future. With the increasing consumption of oil and gas wells in China, the production of most oil and gas wells has entered into high input. In the middle and late stage of low production, the production of low permeability wells is becoming more and more difficult, and the situation of ultra-low permeability wells is not optimistic. How to make oil and gas production stick to the state of high speed, high recovery and low input, and how to excavate all kinds of oil and gas reservoirs efficiently, especially those reservoirs which are difficult to produce under complicated conditions are paid more and more attention to. In the industry, artificial modification of reservoir is made by artificial injection fracturing and other means of increasing production and injection according to tradition, in order to increase permeability and production rate of oil and gas resources, and achieve the purpose of increasing production and increasing production efficiently. After fracturing, the percolation state of the near well zone can be improved, the recovery can be increased and the oil and gas production rate can be improved. Therefore, it is of great significance for the development of oil and gas industry to give extensive and deep well validation and thorough and rigorous research on hydraulic fracturing technology. The pipe string and its supporting tools are the main part of fracturing operation, which determines the effect of fracturing. The whole design of fracturing technology is related to the feasibility of fracturing and the ratio of input and output. It has important guiding significance for actual fracturing operation parameter selection and process determination, and is worthy of further study. According to the research content of this paper, based on the reference of domestic and foreign research literature, the research status of fracturing string at home and abroad is introduced briefly. This paper focuses on the research of fracturing string. By using traditional mechanics analysis and using drilling string mechanics research method for reference, the triaxial stress state of fracturing string is studied firstly, based on this, The strength analysis and safety check of fracturing string were carried out. In chapter 4, based on the previous research results, the influence factors of axial deformation of pipe string are compared and analyzed, and the axial deformation of fracturing string under five basic effects is studied synthetically from the point of view of mechanics. The calculated results of string deformation under different basic effects are obtained. According to the actual data of pipe string under different working conditions, the calculation model mentioned above is verified and exemplified. Finally, from the point of view of the whole fracturing process, based on the professional fracturing design software and using the specific parameters of the virtual well condition, the fracturing design of the simulated well is carried out, and compared with the fracturing result of the original well, which provides a certain reference for the actual fracturing operation.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE934.2
本文编号：2237945
[Abstract]:As a supporting energy industry in last century and even in this century, oil and gas industry has an irreplaceable position in the foreseeable future. With the increasing consumption of oil and gas wells in China, the production of most oil and gas wells has entered into high input. In the middle and late stage of low production, the production of low permeability wells is becoming more and more difficult, and the situation of ultra-low permeability wells is not optimistic. How to make oil and gas production stick to the state of high speed, high recovery and low input, and how to excavate all kinds of oil and gas reservoirs efficiently, especially those reservoirs which are difficult to produce under complicated conditions are paid more and more attention to. In the industry, artificial modification of reservoir is made by artificial injection fracturing and other means of increasing production and injection according to tradition, in order to increase permeability and production rate of oil and gas resources, and achieve the purpose of increasing production and increasing production efficiently. After fracturing, the percolation state of the near well zone can be improved, the recovery can be increased and the oil and gas production rate can be improved. Therefore, it is of great significance for the development of oil and gas industry to give extensive and deep well validation and thorough and rigorous research on hydraulic fracturing technology. The pipe string and its supporting tools are the main part of fracturing operation, which determines the effect of fracturing. The whole design of fracturing technology is related to the feasibility of fracturing and the ratio of input and output. It has important guiding significance for actual fracturing operation parameter selection and process determination, and is worthy of further study. According to the research content of this paper, based on the reference of domestic and foreign research literature, the research status of fracturing string at home and abroad is introduced briefly. This paper focuses on the research of fracturing string. By using traditional mechanics analysis and using drilling string mechanics research method for reference, the triaxial stress state of fracturing string is studied firstly, based on this, The strength analysis and safety check of fracturing string were carried out. In chapter 4, based on the previous research results, the influence factors of axial deformation of pipe string are compared and analyzed, and the axial deformation of fracturing string under five basic effects is studied synthetically from the point of view of mechanics. The calculated results of string deformation under different basic effects are obtained. According to the actual data of pipe string under different working conditions, the calculation model mentioned above is verified and exemplified. Finally, from the point of view of the whole fracturing process, based on the professional fracturing design software and using the specific parameters of the virtual well condition, the fracturing design of the simulated well is carried out, and compared with the fracturing result of the original well, which provides a certain reference for the actual fracturing operation.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE934.2
【参考文献】
相关硕士学位论文 前1条
1 吴旭光;W10块油藏剩余油分布与水力压裂技术研究与应用[D];西南石油大学;2006年
，本文编号：2237945
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