發(fā)布時間：2018-06-04 12:06

  本文選題：固井 + 水平井��； 參考：《東北石油大學》2015年碩士論文

【摘要】：大慶油田經(jīng)過近60年的不斷開發(fā),在淺油層以及地層條件相對簡單的區(qū)域,鉆井密度已趨于飽和,尤其是經(jīng)過調整井、加密井的再次開發(fā)。目前已經(jīng)進入三次調整開發(fā)階段,開發(fā)對象是薄差層,地質特點是隔層薄。為取得良好的開發(fā)效果必須保證層間封隔,因此對固井質量提出更加嚴格的要求。與三次加密初期鉆井相比,受特高含水、高壓注水、聚驅及三元復合驅等油田開發(fā)模式、儲層不同流體動態(tài)影響,三次加密后期調整井鉆井所處地層壓力環(huán)境、地層流體性質與流場分布更加復雜。在地質的構造、套管的斷裂、地層的滲透率、長期的注水作業(yè)、注采的失衡、橫向傳導等因素共同的影響下,地層的原始壓力已經(jīng)被破壞,層間和層內壓力差異非常突出。在調整井的固井過程中、以及在水泥漿侯凝的過程中,地下流體中的油氣水容易侵入環(huán)空沖蝕水泥環(huán),造成水泥漿的污染以及水泥環(huán)膠結質量的下降。目前,油田調整井固井質量的優(yōu)質率只有60%左右,需要得到進一步的提高。為了實現(xiàn)油田可持續(xù)發(fā)展的戰(zhàn)略,大慶油田提出“向非常規(guī)井進軍,向復雜井要產(chǎn)量”的口號,因而水平井和大斜度井已成為今后大慶油田的開發(fā)重點。根據(jù)大慶油田的這些特點特開發(fā)低摩阻高穩(wěn)定性水泥漿,不僅可以有效的解決水平井和大斜度井的固井要求,為大慶油田在水平井固井水泥漿技術方面提供有力的支持。
[Abstract]:After nearly 60 years of continuous development in Daqing Oilfield, the drilling density has been saturated in shallow oil layers and relatively simple formation conditions, especially through the re-development of adjusted wells and infill wells. At present, it has entered three stages of adjustment and development, the object of development is thin and the geological characteristic is thin. In order to obtain good development effect, interlayer sealing must be ensured, so the cementing quality is required more strictly. Compared with the initial drilling in the early stage of triple infilling, the formation pressure environment in which the wells are drilled at the later stage of the third infill is affected by the oil field development models such as extra high water cut, high pressure water injection, polymer flooding and ASP flooding, and different fluid dynamics in the reservoir. The properties of formation fluid and the distribution of flow field are more complicated. Under the influence of geological structure, casing fracture, formation permeability, long-term water injection operation, the imbalance of injection and production, transverse conduction and other factors, the original pressure of formation has been destroyed, and the pressure difference between layers and layers is very prominent. In the cementing process of adjustment wells and in the process of cement slurry solidification, oil, gas and water in underground fluid are apt to invade the annulus and erode the cement ring, resulting in the mud pollution and the deterioration of cement ring cementing quality. At present, the high quality rate of well cementing quality is only about 60%, which needs to be further improved. In order to realize the strategy of sustainable development of oil field, Daqing Oilfield put forward the slogan of "march to unconventional well and produce production to complex well", so horizontal well and large deviated well have become the focus of Daqing oilfield development in the future. According to these characteristics of Daqing Oilfield, the development of low friction and high stability cement slurry can not only effectively solve the cementing requirements of horizontal wells and large deviated wells, but also provide strong support for the cementing technology of horizontal wells in Daqing Oilfield.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE256

【參考文獻】

相關期刊論文 前1條

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本文編號：1977297