【摘要】：海1塊是海外河油田主力區(qū)塊之一。通過多年的注水開發(fā),2002年已進(jìn)入“雙高”開發(fā)階段,剩余油分布零散,受非均質(zhì)性強(qiáng)、井況逐年變差的影響,在目前采出程度39.2%的情況下,依靠水驅(qū)開發(fā)手段挖掘?qū)觾?nèi)層間剩余油潛力難度很大,提高采收率空間較小�；瘜W(xué)驅(qū)驅(qū)油特點(diǎn)就是改善平面、縱向油層的動用狀況,提高驅(qū)油效率。海1塊注采井網(wǎng)完善,水驅(qū)控制、動用程度高,油井受效明顯,各項(xiàng)研究均表明,該塊適合化學(xué)驅(qū)。本論文首先進(jìn)行了斷塊的精細(xì)油藏描述,作為化學(xué)驅(qū)研究的地質(zhì)基礎(chǔ),應(yīng)用各種數(shù)學(xué)和計算機(jī)手段,定性定量的描述油藏模型、外部幾何形態(tài)、規(guī)模大小、油藏內(nèi)部結(jié)構(gòu)、儲層參數(shù)變化和流體分布。然后利用建模和數(shù)模軟件建立油藏地質(zhì)模型和油藏工程模型,并對各種動靜資料的綜合分析,研究掌握油水的變化規(guī)律,對油藏的水驅(qū)開發(fā)效果進(jìn)行了評價,論證了化學(xué)驅(qū)開發(fā)的物質(zhì)基礎(chǔ)和可行性。通過類比法、數(shù)值模擬等研究方法對不同井網(wǎng)井距條件下的化學(xué)驅(qū)開發(fā)效果進(jìn)行了詳細(xì)的論證,并制定層系組合原則,為化學(xué)驅(qū)部署提供依據(jù),以達(dá)到效益最大化。最后針對性的制定了合理可行的挖潛調(diào)整方案。最終采用注采井距150m五點(diǎn)法面積井網(wǎng)布井,整體規(guī)劃化學(xué)驅(qū)井組57個,部署調(diào)整井57口、側(cè)鉆井1口,預(yù)計提高采收率15.5%。本課題的研究對提高遼河老區(qū)開發(fā)效果具有積極的意義,對于今后的化學(xué)驅(qū)開發(fā)實(shí)現(xiàn)有效開展也具有重要的借鑒和指導(dǎo)價值。
[Abstract]:Hai1 Block is one of the main blocks in overseas River Oilfield. Through many years of water injection development, 2002 has entered the "double height" development stage, the remaining oil distribution is scattered, strong heterogeneity, poor well conditions year by year, in the current situation of 39.2% recovery, It is very difficult to excavate the potential of interlayer residual oil by means of water flooding, and there is little space to improve oil recovery. Chemical flooding is characterized by improving the production condition of horizontal and longitudinal reservoirs and improving the displacement efficiency. The injection-production well pattern of Hai1 block is perfect, the water drive control, the production degree is high, and the oil well is effective obviously. All the studies show that the block is suitable for chemical flooding. In this paper, the fine reservoir description of fault block is firstly carried out. As the geological basis of chemical flooding research, the reservoir model, external geometry, size and internal structure of reservoir are described qualitatively and quantitatively by using various mathematical and computer methods. Reservoir parameter variation and fluid distribution. Then the reservoir geological model and reservoir engineering model are established by using the software of modeling and numerical simulation, and the comprehensive analysis of various dynamic and dynamic data is carried out to study and grasp the variation rule of oil and water, and evaluate the development effect of water flooding in reservoir. The material basis and feasibility of chemical flooding development are demonstrated. By means of analogy method and numerical simulation, the development effect of chemical flooding under different well spacing is demonstrated in detail, and the principle of formation combination is formulated to provide the basis for the deployment of chemical flooding, so as to maximize the benefit. Finally, a reasonable and feasible adjustment plan for tapping potential is formulated. Finally, the injection-production well spacing 150 m 5-point area well pattern is adopted, 57 chemical flooding wells are planned as a whole, 57 adjustment wells are deployed, 1 sidetracking well is drilled, and the recovery rate is expected to be increased by 15.5%. The research of this subject has positive significance for improving the development effect of Liaohe old area, and also has important reference and guiding value for the effective development of chemical flooding development in the future.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE53
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本文編號：2463522