本文選題：低礦化度注水　切入點：巖石潤濕性　出處：《西南石油大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著油田的不斷開發(fā),注水開發(fā)已經成了油田提高采收率的一種重要的方法,特別是低滲透油田。注水能夠增大地層壓力,補充地層能量,同時注入水能夠驅替原油,促使油井產出更多的原油,從而提高采收率。我國低滲透油田的天然彈性能量普遍較小,基本上都先后采取了注水保持壓力來補充地層能量的開發(fā)方式,并取得較好的開發(fā)效果和較高的采收率。但是,隨著注水時間變長,注水開發(fā)效果會逐漸變差,例如：地下儲層遭到破壞；含水量大幅度上升,甚至能達到90%以上；注入水礦化度較高,導致井筒井壁結垢等種種對生產不利的結果。 除油田本身地質特征、儲層物性特征等自然條件外,“注夠水和注好水”直接決定著油田的開發(fā)效果。所謂注夠水是指注水量要適應油田采出液量的需要達到注采平衡,保持地層壓力在一個合理的水平；而注好水是指提高油層的水驅效率,提高地質儲量的水驅動用程度,達到較好的開發(fā)效果。對于注水開發(fā)的油藏來說,注入低礦化度水進行驅油是一種有效的提高原油采收率的方法。 XM油田扶楊油藏屬于典型的低孔、低滲、非均質性強的油藏。目前注水井困難,注入壓力高,而油井基本不受效,油井產液量低。本文主要針對XM油田注水所存在的問題,提出了一種新的注水開發(fā)方式——低礦化度注水。低礦化度注水就是向油層中注入水礦化度較低的水,一般來說,礦化度在5000mg/L以下。目前,國內并未對低礦化度注水有深入的研究,本文大量調研了國內外的資料,包括實驗的和理論上的文獻,綜合分析了低礦化度注水提高采收率的機理。在此基礎上,充分利用油藏數值模擬技術對比了高礦化度注水和低礦化度注水的開發(fā)效果,驗證了低礦化度注水開發(fā)能改善油田開發(fā)效果。最后針對XM油田的開發(fā)實際,提出了較為合理的低礦化度注水方案。
[Abstract]:With the continuous development of oil fields, water injection development has become an important method to improve oil recovery, especially in low permeability oilfields. Water injection can increase formation pressure, replenish formation energy, and at the same time, inject water can drive crude oil. The natural elastic energy of low permeability oil fields in China is generally small. Basically, water injection maintenance pressure has been adopted successively to supplement formation energy development. But with the increase of water injection time, the water injection effect will become worse, for example, the underground reservoir will be destroyed, the water content will be increased by a large margin, and the water content can even reach more than 90%. The high salinity of injected water leads to the formation of scale on wellbore wall and other unfavorable results to production. In addition to the natural conditions such as the geological characteristics of the oil field itself and the physical properties of the reservoir, "sufficient water injection and good water injection" directly determine the development effect of the oilfield. To keep the formation pressure at a reasonable level, and good water injection means to improve the water drive efficiency of the reservoir and increase the water driving degree of the geological reserves, so as to achieve a better development effect. Flooding with low salinity water is an effective method to improve oil recovery. Fuyang reservoir in XM oilfield is a typical reservoir with low porosity, low permeability and strong heterogeneity. At present, water injection wells are difficult, injection pressure is high, and oil wells are basically ineffective. In this paper, a new water injection development method, low salinity water injection, is proposed. Low salinity water injection is to inject water with low salinity into the reservoir. Generally speaking, the salinity is less than 5 000 mg / L. at present, There is no deep research on low salinity water flooding in China. This paper has investigated a lot of domestic and foreign data, including experimental and theoretical literature, and comprehensively analyzed the mechanism of low salinity water injection to improve oil recovery. The development effects of high salinity water injection and low salinity water injection are compared by using reservoir numerical simulation technology, and it is verified that low salinity water injection development can improve oilfield development effect. Finally, the development practice of XM oilfield is discussed. A reasonable water injection scheme with low salinity is proposed.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE357.6

【參考文獻】

相關期刊論文 前10條

1 朱德武;劉文臣;朱正剛;;低滲油田注水過程中儲層保護技術研究[J];斷塊油氣田;2008年01期

2 唐海,趙金洲,李軍,張洪軍;注入水水質對儲層適應程度評價方法研究[J];大慶石油地質與開發(fā);2003年06期

3 閆偉峰;金佩強;楊克遠;;低礦化度水驅采油:阿拉斯加北坡的EOR新機遇[J];國外油田工程;2006年06期

4 金佩強;張恒發(fā);陳林風;;國外提高采收率技術新進展[J];國外油田工程;2009年04期

5 程靜波;孫玉學;劉軍;;吉林油田低滲透油藏注入水水質實驗研究[J];科學技術與工程;2009年24期

6 畢只初,俞稼鏞;改變固/液界面潤濕性提高原油采收率的實驗室研究[J];科學通報;2000年16期

7 尹先清,伍家忠,王正良;油田注入水碳酸鈣垢結垢機理分析與結垢預測[J];石油勘探與開發(fā);2002年03期

8 張光明,湯子余,姚紅星,付慧玉;注入水水質對儲層的傷害[J];石油鉆采工藝;2004年03期

9 夏長淮;劉軍;鄭玲;劉強鴻;蓋春華;劉文英;;新民油田中洼北油藏特征及開發(fā)對策[J];西部探礦工程;2010年05期

10 王平;姜瑞忠;王公昌;梁宇;;低礦化度水驅研究進展及展望[J];巖性油氣藏;2012年02期

，

本文編號：1626661