【摘要】：春風油田位于新疆準噶爾盆地西緣,屬于薄淺層超稠油油藏,在開發(fā)實踐過程中,采取蒸汽吞吐開采方式,多輪次吞吐后,存在產量快速遞減問題,在綜合評估論證的基礎上,在排601北區(qū)適時開展了薄淺層超稠油水平井蒸汽驅開發(fā)先導試驗。在對排601北區(qū)進行油藏特征、開發(fā)困難、面臨問題等研究分析的基礎上,從蒸汽驅方案優(yōu)化、方案調整、現(xiàn)場技術配套、現(xiàn)場實施等方面對先導試驗進行系統(tǒng)的全面研究。在該試驗區(qū)上采用排狀井網(wǎng)相比于吞吐而言,可提高采收率31.7%,推薦注汽強度為2.07t/d.ha.m、采注比大于1.2。現(xiàn)場試驗表明,注汽速度為6.0t/h時,既可以防止汽竄發(fā)生,又可以加快溫度場建立;調整實施后,試驗區(qū)井口溫度平均由65℃升至目前73℃,平均單井日增油3.3t/d;通過封堵治理“熱水竄”提高注汽效果,含水由90.6%降至87.7%,日產油由65t/d升至77t/d,取得較好的開發(fā)效果,可顯著提高春風油田開采質量和效率,為新疆準噶爾盆地西緣、北緣等類似油藏的蒸汽驅開發(fā)提供了參考、奠定了技術基礎。
[Abstract]:Chunfeng Oilfield is located in the western margin of Junggar Basin, Xinjiang, and belongs to thin shallow super heavy oil reservoir. In the process of development, steam huff and puff production is adopted. After multiple rounds of huff and puff, there is a problem of rapid decline of production, which is based on comprehensive evaluation and demonstration. A pilot test of steam flooding for thin shallow super heavy oil horizontal wells was carried out in North Pai601. Based on the research and analysis of reservoir characteristics, development difficulties and problems in North Pai 601, the pilot test is systematically and comprehensively studied from the aspects of steam drive scheme optimization, scheme adjustment, field technical matching, field implementation, and so on. Compared with huff and puff, the oil recovery can be improved by using row well pattern in this experiment area. The recommended steam injection intensity is 2.07 t / d. Ha. M, and the ratio of production and injection is more than 1.2. The field test shows that the steam channeling can be prevented and the temperature field can be set up when the steam injection velocity is 6.0t/h. After the adjustment, the average wellhead temperature increased from 65 鈩，

本文編號：2387801