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    1. 產品展廳>>項目研發>>縫洞型油藏試井深入應用評價研究

      該技術從2017年持續攻關至今,打破常規砂巖油藏滲流理論,通過伯努利方程的引入實現了溶洞流體特征的描述,建立井-洞-縫、井-洞-縫-洞、井-縫-洞-縫-洞、井-縫-洞-縫-洞等四種平面、縱向的地質模型,實現溶洞數量、大小、距離、裂縫長度、縫洞組合結構等儲層描述的特色參數解釋,形成相對完善的適用于縫洞油藏類型試井解釋理論體系。

      前期研究主要集中于縫洞試井解釋理論攻關,對于應用解釋軟件尚未規范化;同時關于新理論中參數的物理意義側重縫洞試井新參數,對于其他參數是否具有新物理意義目前尚未攻關;另外前期應用表明裂縫體積計算結果普遍偏大,僅對流體高壓物性類似靜態參數相對敏感,因此繼續開展本項目。

      縫洞型油藏試井解釋及模型完善

      對縫洞型油藏地層進行整理完善,明確不同解釋圖板下全部參數意義

      縫洞試井解釋應用推廣

      縫洞試井解釋應用技術手冊編制

      縫洞試井解釋軟件更新完善

      裂縫體積解釋理論探究

      縫洞型地層壓力分布計算

      平均壓力降幅計算方法研究

      本項目中涉及到縫洞型油藏試井解釋理論完善、解釋應用推廣及裂縫體積結果完善。通過現場100余井次的推廣應用,其中塔河油田老井復查50井次,順北油田50余井次左右,目前資料解釋符合率70%以上。后續繼續將理論與實際結合,對相關裂縫體積及動態儲量計算方法進行深化研究,降低動態儲量解釋誤差,進一步提高吻合率。

      Products>>Project Development>>Study on in-depth application evaluation of well test in fracture-cave reservoir

      Since 2017, the technology has broken through the conventional seepage theory of sandstone reservoir, realized the description of cave fluid characteristics through the introduction of Bernoulli equation, and established four plane and vertical geological models: well-cave-fracture, well- cave-fracture-cave, well-fracture- cave-fracture- cave, well-fracture-cave-fracture-cave. Realize the characteristic parameter interpretation of reservoir description such as the number, size, distance, fracture length and fracture cavity combination structure, and form a relatively perfect theoretical system suitable for well test interpretation of fracture cave reservoir types.

      The previous research mainly focused on the theoretical research of fracture cavity well test interpretation, and the application interpretation software has not been standardized; At the same time, the physical meaning of parameters in the new theory focuses on the new parameters of fracture hole well test, and whether other parameters have new physical meaning has not been solved at present; In addition, the previous application shows that the calculation results of fracture volume are generally too large, which is only relatively sensitive to static parameters similar to fluid high-pressure physical properties. Therefore, the project continues to be carried out.

      Well test interpretation and model improvement of fracture-cave reservoir.

      Sort out and improve the strata of fracture-cave reservoir, and clarify the significance of all parameters under different interpretation charts.

      Application and popularization of fracture-cave well test interpretation.

      Preparation of technical manual for fracture-cave well test interpretation and Application.

      Updating and improving the fracture-cave well test interpretation software.

      Research on fracture volume interpretation theory.

      Calculation of pressure distribution in fracture-cave formation.

      Study on calculation method of average pressure drop.

      This project involves the improvement of well test interpretation theory, interpretation application and fracture volume results of fracture-cave reservoir. Through the promotion and application of more than 100 well times on site, including 50 well times of old well review in Tahe Oilfield and about 50 well times in Shunbei oilfield. At present, the coincidence rate of data interpretation is more than 70%. In the follow-up, continue to combine theory with practice, deepen the research on relevant fracture volume and dynamic reserve calculation methods, reduce the interpretation error of dynamic reserves and further improve the coincidence rate.

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