克拉美丽气田地面工艺适应性研究

发布时间：2018-01-12 00:11

本文关键词：克拉美丽气田地面工艺适应性研究　出处：《西南石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：克拉美丽气田自2008年投产以来,实际生产参数与开发方案预测的指标出入相差较大。随着开采时间的延长,克拉美丽气田的地质参数发生了变化,单井物流含水率上升,产气量变小,井口压力递减过快,已经出现因压力递减导致单井来气不能进入集气站而关井的现象,并使得集输处理系统适应性变差,严重影响了集气处理系统的安全生产及气田的综合开发效益。针对克拉美丽气田集输现状及存在的问题,通过对国内外地面工艺文献的调研和相关资料统计以及地面工艺数据的实地勘察,系统地开展了克拉美丽气田地面工艺适应性研究,包括集输系统适应性研究和处理厂工艺适应性研究两个方面。根据克拉美丽气田采气工艺流程特点,以水合物形成温度为判断指标的集输评价,对气田46口单井在未来20年中的生产适应性进行评价,明确不适应单井的冻堵时间。通过对加热工艺和注醇工艺的影响因素进行分析,对气田不适应生产单井提出不同的集输工艺改造方案,经过对注醇防冻工艺和加热防冻工艺两种改造调整方案进行综合比较分析,得出加热节流工艺更加适应克拉美丽气田后期生产。从投资、能耗和结构适应性三方面对克拉美丽气田已建管网进行综合评价,首先采用管网分级优化方法对克拉美丽气田管网进行投资最优化求解,将目前实际管网与最优管网从投资和能耗两方面进行比较和评价,然后将枝状管网和当前放射状管网的后期改造适应性进行分析。根据气田压力和产量的变化特点进行高低压气压力等级划分,最后提出单井增压、集气站增压和处理厂集中增压三种调整方案。通过对三种调整方案进行了能耗和投资对比,发现高低压分输方案投资少,能耗小,适应性强。以产品气烃露点和水露点作为处理厂的评价指标,首先采用油气处理软件HYSYS对处理厂工艺适应性分析评价,然后对影响处理厂工艺的因素进行分析,找出影响处理厂工艺的关键因素,最后根据高低压分输方案气量特点将处理厂工艺调整分为五个时间段,在此基础上,对每个时间段内的调整方案进行分析,最后形成了“前增压+丙烷制冷”的低压气处理工艺改造技术。
[Abstract]:Kelameili gas field production since 2008, predict the actual production parameters and development scheme index difference. Entry with the exploitation of time, changes in the geological parameters of the Kelameili gas field, water logistics single well gas production rate increased, smaller, wellhead pressure decreases too fast, has emerged as a result of pressure decline in single well can not enter the gas gathering station and shut the phenomenon, and the gathering and treatment system adaptability, seriously affect the comprehensive development benefit of safe production and gas field gathering processing system. On the basis of Kelameili gas gathering status and existing problems, through on-the-spot investigation research on domestic and international literature and related data of Surface Technology Statistics and ground process data, systematically study the beautiful process adaptability of gas field Kela, including process system adaptability research and treatment plant adaptability research gathering Study the two aspects.
According to the Kelameili gas production process characteristics, as the judgment index gathering evaluation to the hydrate formation temperature to evaluate the adaptability of gas field 46 wells in the next 20 years, clearly not adapt to freezing time blocking single wells. By analyzing the influencing factors of the heating process and alcohol injection technology, the to put a different production gas gathering process reconstruction scheme of single well, after a comprehensive adjustment and reconstruction scheme on two kinds of alcohol injection process and heating antifreezing anti freezing process of comparative analysis, the heating and throttling process is more suitable to the Kelameili gas field after production.
From the investment, energy consumption and structure adaptability of three aspects of the Kelameili built network comprehensive evaluation, firstly, network optimization method to solve the optimal investment grade of Kelameili pipe, the actual pipe network and the optimal network from two aspects of investment and energy consumption are compared and evaluated, and then the late reformation adaptive branch network and current the radial network is analyzed. The high and low pressure of compressed air classification according to the characteristics of gas pressure and production, and finally put forward the single well pressure, gas gathering station and pressurization treatment plant booster three adjustment schemes. Through the comparison of three kinds of energy consumption and investment adjustment scheme, found conveying schemes of less investment, low energy consumption and strong adaptability.
The hydrocarbon dew point of product gas and the dew point of water treatment plant as the evaluation index, the oil and gas processing software HYSYS to analysis and evaluation of plant adaptability, then the influence factors of treatment process analysis, find out the key factors affecting the treatment process, according to the characteristics of gas conveying schemes will adjust the treatment process for the five time, based on the analysis of the adjustment scheme of each time period, the final form of the "pre pressurization + propane refrigeration" low-pressure gas processing technology.

【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE863

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