塔河河道砂油藏水驱特征及改善水驱技术研究
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摘要
塔河油田碎屑岩河道砂油藏目前共有10个,采出程度12%,综合含水58.4%,标定采收率27%。目前该类油藏在开发过程中暴露出地层能量不足、部分注采井组动态响应不明确及部分注水井组水窜等问题,整体注水开发效果逐渐变差,且同一河道砂油藏中注水井组间水驱效果差异也较大,亟需针对河道砂油藏开展以井组为研究目标的注水水驱特征和关键影响因素研究,同时针对问题和认识,探索改善河道砂岩油藏注水水驱技术,为下步河道砂油藏改善注水效率提供技术支撑。在地质研究的基础上,选择河道砂油藏典型区块分析注水开发状况,开展注水水驱特征研究;结合油藏地质特征,分析河道砂油藏注水水驱效果影响关键因素;并通过针对影响水驱效果因素,利用油藏数值模拟方法开展河道砂油藏改善水驱技术研究。
There are currently 10 sedimentary sand reservoirs in the Tahe Oilfield, with a recovery rate of 12%,comprehensive water content of 58.4%, and a standard recovery of 27%. At present, the development of this type of reservoir exposes problems such as insufficient formation energy, unclear dynamic response in some injection and production wells, and water flooding in some water injection wells. The overall water injection development effect gradually deteriorates, and the same channel sand reservoir contains. There are also great differences in the water flooding effect between well groups. It is necessary to study the water flooding characteristics and key influencing factors for the study of well sandstone reservoirs for riverbank sand reservoirs. At the same time, aiming at problems and understanding, explore and improve the water injection of sandstone reservoirs in river channels. The flooding technology provides technical support for the improvement of water injection efficiency in the next step sand reservoir. Based on the geological research, this paper selected the typical block of river sand reservoirs to analyze the status of water-flooding development and study the characteristics of water-flooding. Combined with the geological characteristics of the reservoir, this paper analyzed the key factors affecting the waterflooding effect of riverside sand reservoirs and through the use of reservoir numerical simulation methods to improve water-flooding technology for riverbank sand reservoirs in response to factors affecting water-flood effectiveness.
There are currently 10 sedimentary sand reservoirs in the Tahe Oilfield, with a recovery rate of 12%,comprehensive water content of 58.4%, and a standard recovery of 27%. At present, the development of this type of reservoir exposes problems such as insufficient formation energy, unclear dynamic response in some injection and production wells, and water flooding in some water injection wells. The overall water injection development effect gradually deteriorates, and the same channel sand reservoir contains. There are also great differences in the water flooding effect between well groups. It is necessary to study the water flooding characteristics and key influencing factors for the study of well sandstone reservoirs for riverbank sand reservoirs. At the same time, aiming at problems and understanding, explore and improve the water injection of sandstone reservoirs in river channels. The flooding technology provides technical support for the improvement of water injection efficiency in the next step sand reservoir. Based on the geological research, this paper selected the typical block of river sand reservoirs to analyze the status of water-flooding development and study the characteristics of water-flooding. Combined with the geological characteristics of the reservoir, this paper analyzed the key factors affecting the waterflooding effect of riverside sand reservoirs and through the use of reservoir numerical simulation methods to improve water-flooding technology for riverbank sand reservoirs in response to factors affecting water-flood effectiveness.
引文
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[2]王家华,等.储层的随机建模和随机模拟[M].西安:西安石油学院出版社,1992.
[3]吕晓光,王德发.储层地质模型及随机建模技术[J].大庆石油地质与开发.2000,19(1):10-16.
[4]肖红平,陈清华,李阳.随机建模在油气储量计算中的应用[J].新疆石油地质.2004,25(3):317-319.
[5]陈元千,王惠芝.丙型水驱曲线的扩展推导及其在埕北油田的应用[J].中国海上油气,2004,16(6):392-394.
[6]黄炳光,刘蜀知.实用油藏工程与动态分析方法[M].北京:石油工业出版社,1998.
[7]贾忠伟,杨清彦,等.水驱油微观物理模拟实验研究[J].大庆石油地质与开发.2002,21(1):46-49.
[8]张家良,黄在友,等.枣南孔一段油藏强水淹层孔喉半径变化半定量分析和治理对策[J].石油勘探与开发,1999,56(2):46-59.
[9]魏广振,岩石孔喉平均半径SEM测定法[J].分析仪器,2011,2:51-53.
[10]彭珏,康毅力.润湿性及其演变对油藏采收率的影响[J].油气地质与采收率,2008,15(1):72-76.
[11]付美龙,周玉霞.润湿性的改变对提高采原油收率的影响研究[J].石油天然气学报,2012,34(12):128-132.
[12]马明学,鞠斌山,等.注水开发油藏润湿性变化及其对渗流的影响[J].石油钻探技术,2013,41(2):82-86.
[13]施德友,等.注氮气泡沫提高采收率技术在胜利油田的应用[J].天然气勘探与开发,2000,28(2):47-49.
[14]刘应学,赵力强,等.氮气泡沫调驱技术在注水井的应用[J],江汉石油职工大学学报,2007,20(2):57-60.
[15]仉莉,等,驱油用表面活性剂的发展及界面张力研究[J].西安石油大学学报(自然科学版),2010(06):59-65+112.
[16]陈刚,等,表面活性剂驱油性能评价及其在低渗透油田的应用[J].油田化学,2014,(03):410-413,418.
[17]郭东红,等,新型耐温耐盐表面活性剂驱油体系的研究[J].精细石油化工进展,2003,(10):1-3+7.
[18]宋新旺,等.润湿性对油水渗流特性的影响[J].油田化学,2008,(04):305-308.
[19]李华斌,赵化廷,陈洪,等.中原油田疏水缔合聚合物凝胶调剖剂的矿场应用[J].油田化学,2006,23(1):54-58.
[20]周亚贤,郭建华,王同军,等.一种耐温抗盐预交联凝胶颗粒及其应用[J].油田化学,2007,24(1):75-78.
[21]朱怀江,王平美,刘强,等.一种适用于高温高盐油藏的柔性堵剂[J].石油勘探与开发,2007,34(2):230-233.