本文選題：注水井　切入點(diǎn)：注水穩(wěn)定性　出處：《東北石油大學(xué)》2017年碩士論文

【摘要】：2008年起,油田開始實(shí)施注水井年三次測(cè)調(diào),測(cè)調(diào)工作量大幅度增加。2013年薩北油田利用分層監(jiān)測(cè)技術(shù)進(jìn)行了19口井58個(gè)層段的長期動(dòng)態(tài)監(jiān)測(cè),結(jié)果表明,一個(gè)測(cè)調(diào)周期后需要重新測(cè)調(diào)的井和層分別占62%和26%,可以初步看出,測(cè)調(diào)周期需要個(gè)性化調(diào)整,以保證注水合格率,并實(shí)現(xiàn)測(cè)調(diào)資源合理配置。但由于當(dāng)時(shí)監(jiān)測(cè)井?dāng)?shù)較少,且僅有少數(shù)井達(dá)到6個(gè)月,不具備全面代表性。因此在薩北油田北三西區(qū)塊開展注水井個(gè)性化測(cè)調(diào)周期研究,深入分析注水井動(dòng)態(tài)變化規(guī)律。課題利用注水井多參數(shù)動(dòng)態(tài)監(jiān)測(cè)儀可以對(duì)分層注水井生產(chǎn)過程中的壓力、流量、溫度的長期動(dòng)態(tài)監(jiān)測(cè)功能,選取北三西水驅(qū)區(qū)塊41口井90個(gè)層段進(jìn)行了長期監(jiān)測(cè)。優(yōu)化了該儀器的回放功能,增加了“水嘴磨損修正功能”和“吸水系數(shù)曲線繪制功能”。同時(shí),通過統(tǒng)計(jì)監(jiān)測(cè)結(jié)果,初步確定影響注水穩(wěn)定性的因素主要有:井網(wǎng)類型、層段數(shù)、層段注水量、層段性質(zhì)和水嘴尺寸,通過對(duì)監(jiān)測(cè)結(jié)果的統(tǒng)計(jì)分析,確定了測(cè)調(diào)周期的五個(gè)主要影響因素,在此研究基礎(chǔ)上,利用遺傳算法確定了測(cè)調(diào)周期預(yù)測(cè)方法,現(xiàn)場(chǎng)驗(yàn)證符合率可達(dá)91.8%。利用該方法對(duì)北三西全部注水井測(cè)調(diào)周期進(jìn)行預(yù)測(cè),結(jié)果表明,可以實(shí)現(xiàn)在測(cè)調(diào)工作量基本不增加的基礎(chǔ)上提高注水合格率。利用注水井綜合參數(shù)監(jiān)測(cè)儀對(duì)油層吸水狀況的長期監(jiān)測(cè)功能,初步掌握了地層吸水穩(wěn)定狀況的影響因素,并制定了個(gè)性化的測(cè)調(diào)周期,有助于測(cè)調(diào)資源的合理配置,同時(shí),可提高注水合格率,保證水驅(qū)開發(fā)效果,具有廣闊的應(yīng)用前景。
[Abstract]:Since 2008, the oil field began to carry out three times of annual logging and adjustment of water injection wells, and the workload of logging has increased greatly. In 2013, Sabei Oilfield used stratified monitoring technology to carry out long-term performance monitoring of 58 formations in 19 wells. The results show that, 62% and 26% of the wells and beds need to be re-measured after a survey period. It can be preliminarily seen that the adjustment cycle needs individuation adjustment to ensure the qualified rate of water injection and to realize the rational allocation of survey and adjustment resources. However, the number of monitoring wells at that time was relatively small. Only a few wells have reached 6 months, which is not fully representative. Therefore, a study on the individualized logging cycle of water injection wells has been carried out in the north Sanxi block of Sabei Oilfield. The multi-parameter dynamic monitoring instrument of water injection wells can be used to monitor the long-term performance of pressure, flow and temperature in the production of stratified water injection wells. The long-term monitoring of 90 layers of 41 wells in North Sanxi Water flooding Block was carried out. The playback function of the instrument was optimized, and the functions of "water nozzle wear correction" and "drawing water absorption coefficient curve" were added. At the same time, through statistical monitoring results, The main factors that influence the stability of water injection are: type of well pattern, number of layers, injection rate of interval, property of interval and size of nozzle. Through statistical analysis of monitoring results, five main influencing factors of measuring and adjusting period are determined. On the basis of this research, the prediction method of the measuring and adjusting period is determined by using genetic algorithm, and the coincidence rate of field verification can reach 91.8%. The method is used to predict the logging adjustment period of all the water injection wells in the north, three and west, and the results show that, It is possible to improve the qualified rate of water injection on the basis of no increase in the workload of testing and adjusting. By using the long-term monitoring function of the comprehensive parameter monitor of water injection wells to monitor the water absorption status of the reservoir, the factors affecting the water absorption and stability of the formation are preliminarily grasped. The individualized measuring and adjusting cycle is established, which is helpful to the rational allocation of the measuring and adjusting resources, at the same time, it can improve the qualified rate of water injection and ensure the development effect of water drive. It has a broad application prospect.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TE357.62
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本文編號(hào)：1656970