【摘要】：對于采用多層合采開發(fā)模式的海上大跨度多層油田而言,隨著油藏開發(fā)程度的提高,逐漸暴露出一系列弊端,層系調(diào)整已成為提高油田采收率的一種重要措施。在正確認(rèn)識油田目前開發(fā)現(xiàn)狀及開發(fā)水平和影響油田高效開發(fā)關(guān)鍵因素的基礎(chǔ)上,詳細(xì)論證層系重新組合政策界限,確立適用于油田的層系重新組合方案,對實(shí)現(xiàn)油田高效生產(chǎn)開發(fā)意義重大。本文以BL油田為例,基于油田目前開發(fā)現(xiàn)狀及存在的問題,主要開展了如下幾方面的工作,并取得了相應(yīng)的成果:(1)歸納總結(jié)了油田地質(zhì)及開發(fā)特征,為后續(xù)研究工作奠定了基礎(chǔ)。(2)通過多種動(dòng)態(tài)方法計(jì)算分析了現(xiàn)行開發(fā)方案可能達(dá)到采收率,采用類比法、經(jīng)驗(yàn)公式法、數(shù)值模擬法確定了油田的潛力采收率,明確了油田具有近10%采收率增幅的開發(fā)調(diào)整潛力;選取井網(wǎng)完善狀況類指標(biāo)、水驅(qū)狀況類指標(biāo)、產(chǎn)量及儲(chǔ)采狀況類指標(biāo)、含水狀況類指標(biāo)等四大類指標(biāo),對油田開發(fā)效果進(jìn)行了評價(jià),并分析了開發(fā)中存在的問題,明確了要實(shí)現(xiàn)近10%采收率增幅目標(biāo)的開發(fā)調(diào)整方向(以提高縱向水驅(qū)動(dòng)用程度為目標(biāo)進(jìn)行分層系開發(fā)調(diào)整)。(3)在認(rèn)清影響B(tài)L油田開發(fā)效果關(guān)鍵因素的基礎(chǔ)上,建立符合油田地質(zhì)特征的機(jī)理模型,并針對層系重組參數(shù)界限開展系統(tǒng)性數(shù)模研究。(4)通過相關(guān)油藏工程研究,結(jié)合經(jīng)濟(jì)評價(jià),建立了海上大跨度多層油田層系重組調(diào)整研究新方法,系統(tǒng)研究了滿足開發(fā)效果的油藏層系調(diào)整下限標(biāo)準(zhǔn)及其相應(yīng)的校正圖版,明確了油田層系重新組合調(diào)整技術(shù)政策界限。(5)利用所建立的層系重新組合調(diào)整界限標(biāo)準(zhǔn)及其相應(yīng)的校正圖版,對BL油田進(jìn)行層系重組,分析預(yù)測了油田層系重組調(diào)整后開發(fā)效果改善情況。層系重組調(diào)整效果預(yù)測結(jié)果表明:論文建立的層系重組調(diào)整研究新方法可行,獲得的油藏層系調(diào)整下限標(biāo)準(zhǔn)及其相應(yīng)的校正圖版正確。
[Abstract]:For offshore large-span multi-layer oil fields with multi-layer combined production development model, with the improvement of reservoir development degree, a series of drawbacks are gradually exposed, and the adjustment of strata series has become an important measure to improve oil recovery. Based on the correct understanding of the present development situation and the development level of the oilfield and the key factors affecting the high efficiency development of the oilfield, the policy limits of the recombination of the strata system are demonstrated in detail, and the plan of the recombination of the strata system suitable for the oilfield is established. It is of great significance to realize high efficiency production and development of oil field. Taking the BL oilfield as an example, based on the present development situation and existing problems of the oilfield, this paper mainly carried out the following work, and obtained the corresponding results: (1) summarized the geological and development characteristics of the oilfield; It lays a foundation for further research work. (2) the potential oil recovery of oil field is determined by analogy, empirical formula method and numerical simulation method. (2) the potential oil recovery is calculated and analyzed by a variety of dynamic methods, and the potential oil recovery is determined by using analogy method, empirical formula method and numerical simulation method. It is clear that the oilfield has the development adjustment potential of near 10% oil recovery increase, and selects four kinds of indexes, such as well pattern perfect condition index, water drive condition index, production rate and storage and production condition index, water cut condition type index, etc. The effect of oilfield development is evaluated, and the problems existing in the development are analyzed. On the basis of recognizing the key factors affecting the development effect of BL oilfield, it is clear that the development and adjustment direction of the increase target of near 10% recovery factor (). (3), which aims to improve the longitudinal water driving degree, is based on a clear understanding of the key factors affecting the development effect of BL oilfield. To establish a mechanism model in accordance with the geological characteristics of oil field, and to carry out systematic mathematical model research on the boundary of the parameters of series reorganization. (4) through the research of related reservoir engineering, combined with economic evaluation, In this paper, a new method to study the adjustment and adjustment of strata in large span and multi-layer oil fields is established. The lower limit standard of adjustment of reservoir series and its corresponding correction chart are systematically studied to meet the development effect. The technical policy limits of the recombination and adjustment of the oilfield series are defined. (5) the BL oilfield is reorganized by using the established criteria for the readjustment and adjustment of the stratigraphic system and the corresponding correction charts. This paper analyzes and predicts the improvement of the development effect after the reorganization and adjustment of the oil field's stratigraphic system. The prediction results show that the new method established in this paper is feasible and the lower limit of reservoir adjustment and the corresponding correction chart are correct.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE53

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