【摘要】：遼河油田杜66塊火驅(qū)開發(fā)進程的不斷深入的過程中,受井網(wǎng)井距、沉積相、儲層非均質(zhì)性、采出狀況等因素的影響,火驅(qū)見效差異較大。由于火線推進不均,部分生產(chǎn)井單方向受效,影響了火驅(qū)區(qū)塊整體開發(fā)效果。為提高低滲透層動用程度,防止火線單向突進,改善火驅(qū)井組整體開發(fā)效果。本文提出在杜66塊火驅(qū)注氣井和生產(chǎn)井上實施雙向調(diào)控:在注氣井上實施注氣井調(diào)剖技術(shù),利用泡沫的高視粘度和賈敏效應(yīng),增加大孔道的氣體流動阻力,迫使氣流轉(zhuǎn)向,達到調(diào)整儲層縱向剖面的目的。在生產(chǎn)井上開展復(fù)合段塞化學(xué)封竄技術(shù)研究,利用強凝膠堵劑的流動性能和耐高溫封口劑的封堵強度,以小排量注入,遠距離封堵為技術(shù)思路,防控火線單向突進,改善火驅(qū)井組整體開發(fā)效果。本文分析和研究了杜66塊火驅(qū)注氣井調(diào)剖技術(shù),并從中選擇了適合應(yīng)用于杜66塊火驅(qū)注氣井調(diào)剖技術(shù)的發(fā)泡劑,并對該發(fā)泡劑的發(fā)泡性能、穩(wěn)泡性能及封堵性能進行評價。研究了目前適用于杜66塊火驅(qū)生產(chǎn)井氣竄封堵方法,采用復(fù)合段塞封堵體系,根據(jù)火驅(qū)生產(chǎn)井溫度分布特點,采用強凝膠堵劑+耐高溫無機凝膠調(diào)剖劑或者強凝膠堵劑+耐高溫封竄劑組合,主要根據(jù)措施井井況的不同選擇不同的封竄劑體系。并對強凝膠堵劑、耐高溫無機凝膠調(diào)剖劑、耐高溫封竄劑的性能進行評價。通過現(xiàn)場應(yīng)用證明,杜66塊火驅(qū)調(diào)竄封堵技術(shù),縱向上提高了低滲透層動用程度,平面上擴大了注入空氣有效波及體積,對火線均勻推進起積極作用。
[Abstract]:In the process of continuous development of fire drive in Block du 66 in Liaohe Oilfield, the effect of fire flooding is quite different due to the influence of well spacing, sedimentary facies, reservoir heterogeneity, production condition, and so on. Due to uneven advance of fire line, one-way effect of some production wells is affected, which affects the overall development effect of fire flooding block. In order to improve the production degree of low permeability layer, prevent the one way advance of fire line and improve the overall development effect of fire flooding well group. In this paper, it is proposed that bidirectional control should be carried out in the fire drive gas injection wells and production wells in block du 66. The profile control technology of the gas injection wells in the gas injection wells can increase the gas flow resistance of the large pore channels and force the gas flow to turn by using the high apparent viscosity and the Jia Min effect of the foam. The purpose of adjusting the reservoir longitudinal profile is achieved. The chemical channeling technology of compound slug is studied in production well. By using the fluidity of strong gel plugging agent and the sealing strength of high temperature sealing agent, taking small displacement injection and long distance plugging as the technical train of thought, the fire prevention and control line will break out in one direction. Improve the overall development effect of fire flooding group. In this paper, the profile control technology of fire flooding gas injection wells in block du 66 is analyzed and studied, and the foaming agent suitable for profile control technology of fire flooding gas injection wells in block du 66 is selected, and the foaming performance, foaming stability and plugging performance of the foaming agent are evaluated. This paper studies the gas channeling plugging method used in the production wells of block du 66 fire drive, adopts the compound slug plugging system, and according to the characteristics of temperature distribution in the production wells of fire drive. The combination of strong gel plugging agent high temperature resistance inorganic gel profile control agent or strong gel plugging agent high temperature resistance channeling sealing agent was used to select different channeling sealing agent system according to different well conditions. The properties of strong gel plugging agent, high temperature inorganic gel profile control agent and high temperature channeling sealing agent were evaluated. It is proved by the field application that the plugging and channeling technology of fire drive in block du 66 has increased the production degree of low permeability layer vertically, expanded the effective sweep volume of injected air on the plane, and played a positive role in the even advance of fire line.
【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】：TE357.44
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本文編號：2224169