發(fā)布時間：2018-05-12 22:44

  本文選題：疊層砂巖 + 低滲透性　； 參考：《西安石油大學》2015年碩士論文

【摘要】：低滲油氣資源在油氣勘探開發(fā)中的地位越來越重要,而水平井開發(fā)低滲油氣藏有直井不具備的優(yōu)點,水平井與地層為線接觸,泄油面積大、油井產量高、采收率高,可有效避免底水錐進等。但是目前關于水平井開發(fā)的儲量動用程度評價方法仍處于早期探索階段,急需對水平井開發(fā)儲量動用程度評價的方法進行研究。疊層砂巖低滲油藏具有儲層薄、儲層交錯疊置的突出特點,大大增加了開發(fā)難度。本論文以華慶油田白239井區(qū)長63儲層作為疊層砂巖低滲透油藏的典型代表,長63為三角洲前緣水下分流河道沉積,孔隙度3.01%~19.04%、滲透率0.3~0.6m D,屬于特低滲疊層砂巖油藏,在研究其地質特征的基礎上,進行儲層綜合評價。利用三維隨機建模技術、油藏工程理論和數值模擬研究,對長63不同開發(fā)方式下的儲量動用程度進行評價,結果表明水平井開發(fā)儲量動用程度為53.16%~58.51%;并對不同開發(fā)方式下的采收率進行預測,最終表明對于白239井區(qū)薄層交互疊置油藏的特點,水平井控制儲量程度明顯降低,導致水平井開發(fā)的最終采收率(8.09%)明顯低于直井開發(fā)的最終采收率(11.64%)。本文對疊層砂巖低滲油藏中水平井開發(fā)具有較好的指導意義,對疊層砂巖低滲油藏的合理開發(fā),提高儲量動用程度都具有十分重要的借鑒價值和指導意義。
[Abstract]:The status of low permeability oil and gas resources is more and more important in oil and gas exploration and development, and horizontal well development of low permeability oil and gas reservoir has the advantages of line contact between horizontal well and formation, large oil discharge area, high oil production and high oil recovery. Can effectively avoid bottom water coning, etc. However, at present, the evaluation method of the exploitation degree of the horizontal well reserves is still in the early stage of exploration, so it is urgent to study the method of evaluating the exploitation degree of the horizontal well reserves. The laminated sandstone low permeability reservoir has the characteristics of thin reservoir and staggered overlay, which greatly increases the difficulty of development. In this paper, Chang63 reservoir of Bai239 well in Huaqing Oilfield is taken as a typical example of the laminated sandstone low permeability reservoir. Chang63 is a delta front underwater distributary channel sedimentation, with porosity 3.01 ~ 19.04 and permeability 0.3 ~ 0.6mD, which is an ultra-low permeability sandstone reservoir. On the basis of studying its geological characteristics, comprehensive reservoir evaluation is carried out. By using 3D stochastic modeling technology, reservoir engineering theory and numerical simulation, the reserve production degree of Chang63 is evaluated under different development modes. The results show that the production degree of horizontal well development reserves is 53.16 and 58.51, and the recovery factor under different development modes is forecasted. Finally, it is shown that the level of controlled reserves in horizontal wells is obviously reduced for the characteristics of thin layer interactive superimposed reservoirs in Bai239 well area. As a result, the final recovery factor of horizontal well is 8.09%, which is obviously lower than that of vertical well development (11.64%). This paper has good guiding significance for horizontal well development in laminated sandstone low permeability reservoir, and has very important reference value and guiding significance for rational development of laminated sandstone low permeability reservoir and improving reserve production degree.
【學位授予單位】：西安石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE348

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本文編號：1880474