大庆外围Y区块葡一油层组油田压力监测系统优化研究
发布时间：2019-02-15 15:52
【摘要】：合理的压力监测系统是进行油田动态监测、动态分析、制定科学的开发调整方案的基础,因此对压力监测系统优化方法进行系统的研究必不可少。大庆外围Y区块油田自投入开发以来的测压资料表明,有大部分的压力恢复试井资料不出径向流直线段,解释结果多解性强,使得开发人员无法获得准确的地层信息,严重影响了资料利用率;同时目前油田存在大量斜井、水平井,这些井缺乏相应的监测技术。为此,本文开展了Y区块油田压力监测系统优化研究,有效掌握Y区块油田的地层压力动态信息,为油田开发及方案制定提供依据,无疑具有重大的意义。本文通过针对未出径向流动段的井和恢复测压的井,以油藏实际测压数据统计规律和渗流力学基本理论为依据,利用Honer方法和MDH方法求取地层压力基本原理,对现有的数理统计方法、面积加权平均、体积加权平均、井间压力分布等地层压力求取的适应性和准确性进行了研究,给出了地层压力计算方法,并优选压力时间乘积法和MDH法这两种方法。根据历史测压资料成果,对不同解释成果进行了归类。其中出现径向流动段的井,分析了进一步优化测压时间潜力,给出了测压时间范围;未出现径向流动段的井,分析了原因,通过测压时间优化,给出了合理测压时间范围,尽可能测取到径向流动段;对于测静压和恢复测压的井,也优化了测压时间,给出了测压时间范围。驼峰型、径向流型和上翘型的关井时间范围分别为180h-749h,205h-240h,93h-240h。分析了各种测压方式下地层压力的处理与计算,针对Y区块的不同工作制度井,结合各种测压方法的优缺点,提出了相应工作制度井的最佳测压方式:正常抽油井采用偏心测压和液面恢复测压;间抽井采用液面恢复测压;长关井和捞油井采用测静压点,为监测井点的测压方式选取提供了参考。根据油田的地质特征和动态特征,结合测压历史数据,分析了影响油田地层压力主要因素,研究了油田不同开发阶段地层压力保持水平。研究获得了综合考虑影响因素下的合理地层压力保持水平的计算方法,以含水率为参考,计算了 Y区块合理地层压力保持水平。这些研究性成果的取得,为Y区块进一步的油田开发提供了依据,对Y区块的开发无疑具有及其重大的意义。
[Abstract]:Reasonable pressure monitoring system is the basis of dynamic monitoring, dynamic analysis and scientific development adjustment scheme, so it is necessary to study the optimization method of pressure monitoring system systematically. The pressure measurement data of Y block oil field in the periphery of Daqing since it was put into development show that most of the pressure recovery test data can not produce radial flow straight section, and the interpretation result is multi-solution, which makes it impossible for developers to obtain accurate formation information. Seriously affected the utilization rate of information; At the same time, there are a large number of inclined wells and horizontal wells in the oil field, these wells lack the corresponding monitoring technology. Therefore, this paper has carried out the optimization research of the pressure monitoring system in the Y block oilfield, effectively grasped the formation pressure dynamic information of the Y block oilfield, and provided the basis for the oilfield development and the plan formulation, which is undoubtedly of great significance. In this paper, the basic principles of formation pressure are obtained by means of Honer method and MDH method, based on the statistical law of reservoir actual pressure measurement data and the basic theory of percolation mechanics. The adaptability and accuracy of existing mathematical statistical methods, area weighted average, volume weighted average, cross-well pressure distribution and other formation pressure calculation methods are studied, and the calculation method of formation pressure is given. The pressure time product method and the MDH method are also selected. According to the results of historical pressure measurement, different interpretation results are classified. The potential of further optimizing pressure measurement time is analyzed, and the time range of pressure measurement is given. The causes of the wells without radial flow section are analyzed, and the reasonable pressure measurement time range is given by optimizing the pressure measurement time, and the radial flow section is measured as far as possible. For the wells with static pressure and recovery pressure, the pressure measuring time is optimized, and the pressure measuring time range is given. The closing time ranges of hump type, radial flow pattern and upwarping type are 180h-749h / 205h-240hU 93h-240h respectively. This paper analyzes the treatment and calculation of formation pressure under various pressure measurement methods, and combines the advantages and disadvantages of various pressure measuring methods for different working system wells in Y block. The best pressure measurement method of the corresponding working system well is put forward: the normal pumping well adopts eccentric pressure measurement and liquid level recovery pressure measurement; In the interval pumping well, the liquid level is used to recover the pressure measurement, and the static pressure point is used in the long shut-in well and the salvage well, which provides a reference for the selection of the pressure measuring method for the monitoring well point. According to the geological and dynamic characteristics of the oil field, combined with the historical data of pressure measurement, the main factors affecting the formation pressure in the oilfield are analyzed, and the level of formation pressure maintenance in different development stages of the oilfield is studied. The reasonable formation pressure maintenance level of Y block is calculated by taking water cut as reference. The achievement of these research achievements provides the basis for further oilfield development in block Y, and undoubtedly has great significance for the development of block Y.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE331
[Abstract]:Reasonable pressure monitoring system is the basis of dynamic monitoring, dynamic analysis and scientific development adjustment scheme, so it is necessary to study the optimization method of pressure monitoring system systematically. The pressure measurement data of Y block oil field in the periphery of Daqing since it was put into development show that most of the pressure recovery test data can not produce radial flow straight section, and the interpretation result is multi-solution, which makes it impossible for developers to obtain accurate formation information. Seriously affected the utilization rate of information; At the same time, there are a large number of inclined wells and horizontal wells in the oil field, these wells lack the corresponding monitoring technology. Therefore, this paper has carried out the optimization research of the pressure monitoring system in the Y block oilfield, effectively grasped the formation pressure dynamic information of the Y block oilfield, and provided the basis for the oilfield development and the plan formulation, which is undoubtedly of great significance. In this paper, the basic principles of formation pressure are obtained by means of Honer method and MDH method, based on the statistical law of reservoir actual pressure measurement data and the basic theory of percolation mechanics. The adaptability and accuracy of existing mathematical statistical methods, area weighted average, volume weighted average, cross-well pressure distribution and other formation pressure calculation methods are studied, and the calculation method of formation pressure is given. The pressure time product method and the MDH method are also selected. According to the results of historical pressure measurement, different interpretation results are classified. The potential of further optimizing pressure measurement time is analyzed, and the time range of pressure measurement is given. The causes of the wells without radial flow section are analyzed, and the reasonable pressure measurement time range is given by optimizing the pressure measurement time, and the radial flow section is measured as far as possible. For the wells with static pressure and recovery pressure, the pressure measuring time is optimized, and the pressure measuring time range is given. The closing time ranges of hump type, radial flow pattern and upwarping type are 180h-749h / 205h-240hU 93h-240h respectively. This paper analyzes the treatment and calculation of formation pressure under various pressure measurement methods, and combines the advantages and disadvantages of various pressure measuring methods for different working system wells in Y block. The best pressure measurement method of the corresponding working system well is put forward: the normal pumping well adopts eccentric pressure measurement and liquid level recovery pressure measurement; In the interval pumping well, the liquid level is used to recover the pressure measurement, and the static pressure point is used in the long shut-in well and the salvage well, which provides a reference for the selection of the pressure measuring method for the monitoring well point. According to the geological and dynamic characteristics of the oil field, combined with the historical data of pressure measurement, the main factors affecting the formation pressure in the oilfield are analyzed, and the level of formation pressure maintenance in different development stages of the oilfield is studied. The reasonable formation pressure maintenance level of Y block is calculated by taking water cut as reference. The achievement of these research achievements provides the basis for further oilfield development in block Y, and undoubtedly has great significance for the development of block Y.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE331
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