S26区块开发调整方案研究

发布时间：2018-06-25 22:54

本文选题：低渗气藏 + 生产动态分析　；参考：《东北石油大学》2016年硕士论文

【摘要】：气田开发过程中,随着开发过程的持续和地质研究的深入,开发调整方案的设计、研究有着至关重要的作用。一套合理的气田开发方案或开发调整方案设计,可以有效提高气田的整体开发效率、增加经济效益。S26区块目前已经进入递减阶段,虽然气藏储量大,但储层物性差,大量特低渗透储层储量难以动用,亟需制定相应的开发方案调整对策,最大限度的提高区块采出程度。本文运用油藏工程的方法,首先对S26井区开发现状、水平井生产特征、单井产能等生产动态进行了分析,掌握气藏动态特征、提出目前区块开采存在的主要问题,并应用Arps递减模型进行产能递减分析,确定具备实施增产措施条件的气井,为经济有效的开采剩余气提供依据。然后利用气藏生产过程中取得的动、静态资料,结合气藏地质特征和动态特征研究,建立了精细储层地质模型,利用油藏工程方法结合油藏数值模拟技术,制定了合理的开发调整方案并进行模拟预测,对比预测结果后推荐最优方案,为提高气田采收率提供技术支持。在对生产资料分析的基础上,结合气藏工程和地质研究的认识,共设计了包含加密井网、增压、组合方案在内的3套调整方案,通过数值模拟预测对比,结果表明：加密方案有助于提高区块的稳产时间和采出程度,加密之后区块的合理日产量为219.8×104m3/day,此配产情况下稳产时间可达到5.2年,预测期末采出程度23.01%,比基础方案提高2.59%：增压方案中,优选出S26区块实施增压开采时的最低井口压力为1MPa,该方案可使稳产时间达到5.3年,预测期末采出程度达到25.14%,较基础方案提高4.72%。最终推荐增压+低产低效井补孔+井网加密方案为最优调整方案,该方案可实现以219.8×104m3的日产气量稳产8.4年,预测期末采出程度为33.32%,比基础方案提高12.9个百分点,累产量可达到231.89×108m3,比基础方案增加89.77×108m3。
[Abstract]:In the process of gas field development, with the continuous development process and the depth of geological research, the design of the development adjustment scheme is very important. A set of rational gas field development program or the design of the development adjustment scheme can effectively improve the overall development efficiency of the gas field, and the economic benefit.S26 blocks have already entered the decrement order. Although the gas reserves are large, but the reservoir property is poor, the reserves of a large number of ultra-low permeability reservoirs are difficult to use. It is urgent to formulate corresponding countermeasures to adjust the development scheme to maximize the recovery degree of the block. In this paper, the development status of the S26 well area, the production characteristics of horizontal wells and the production of single well productivity are first carried out by using the method of reservoir engineering. Analysis, master the dynamic characteristics of gas reservoir, put forward the main problems existing in the current block mining, and use the Arps decline model to analyze the productivity decline, determine the gas wells with the conditions for increasing production measures, provide the basis for the economic and effective exploitation of the remaining gas, and then use the dynamic and static data obtained in the gas reservoir production process, combined with the gas reservoir geology. The study of characteristics and dynamic characteristics has established the fine reservoir geological model. Using the reservoir engineering method and the reservoir numerical simulation technology, a reasonable development adjustment scheme is made and the simulation prediction is made. The optimal scheme is recommended after the comparison of the prediction results, which provides technical support for the improvement of the gas field recovery. In the understanding of gas reservoir engineering and geological research, 3 sets of adjustment schemes including encrypted well network, turbocharging and combination scheme are designed. The results show that the encryption scheme is helpful to improve the stable production time and recovery degree of the block. The reasonable daily output of the block after encryption is 219.8 x 104m3/day, and this distribution situation is the same. The lower stable production time can reach 5.2 years, the final production level of the forecast period is 23.01%, which is 2.59% higher than the basic plan. In the supercharging scheme, the minimum wellhead pressure of the S26 block is 1MPa. The scheme can make the stable production time reach 5.3 years, the final production level of the forecast period is 25.14%, and the base scheme improves 4.72%. finally recommends supercharging +. The optimal adjustment scheme of low yield and low efficiency wells plus well network encryption scheme is the optimal scheme. The scheme can achieve a stable output of 219.8 x 104m3 for 8.4 years, the final production level is 33.32%, 12.9 percentage points higher than that of the basic scheme, and the output can reach 231.89 x 108m3, and the base scheme is increased by 89.77 x 108m3..
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE37

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