鄂尔多斯盆地某区块油井见水特征分析
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摘要
针对鄂尔多斯盆地某研究区在注水过程中油井容易发生过早见水和水淹、产量下降快、采收率低的问题,利用见水特征曲线对研究区单井进行了见水特征分析,判断出单井的见水类型,根据不同的见水类型提出不同的解决措施。研究结果表明,研究区开发前期属于条带型见水;开发中期,裂缝发育的区块属于裂缝型见水,裂缝不发育的区块属于水锥型见水;开发后期,整个区块都属于层状型见水。
In view of the problems occurred in the process of water injection wells in the study area of Ordos basin, the oil well is prone to appear early water breakthrough, water flooding, rapid production decline and low recovery. By using the water breakthrough characteristic curve, the water breakthrough characteristics of a single well in the study area were analyzed, the water breakthrough types were determined, and different solutions to the different types of water breakthrough were put forward. The results show that the development in the early stage belongs to the strip type of water breakthrough. In the middle stage of development, the fractured blocks belong to the fractured water breakthrough type, while the non-fractured blocks belong to the water-coning water breakthrough type. At the later stage of development, the whole block belongs to a stratified water breakthrough type.
In view of the problems occurred in the process of water injection wells in the study area of Ordos basin, the oil well is prone to appear early water breakthrough, water flooding, rapid production decline and low recovery. By using the water breakthrough characteristic curve, the water breakthrough characteristics of a single well in the study area were analyzed, the water breakthrough types were determined, and different solutions to the different types of water breakthrough were put forward. The results show that the development in the early stage belongs to the strip type of water breakthrough. In the middle stage of development, the fractured blocks belong to the fractured water breakthrough type, while the non-fractured blocks belong to the water-coning water breakthrough type. At the later stage of development, the whole block belongs to a stratified water breakthrough type.
引文
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[2]王光付,廖荣凤,李江龙等.中国石化低渗透油藏开发状况及前景[J].油气地质与采收率,2007,14(3):84.
[3]赵阳,曲志浩,刘震.裂缝水驱油机理的真实砂岩微观模型实验研究[J].石油勘探与开发,2002,29(1):116–119.
[3]中国石油地质志(十二卷,长庆油田)[M].北京:石油工业出版社,1992.
[4]李浩.鄂尔多斯盆地中部上古生界烃源岩研究[D].陕西西安:西北大学,2015.
[5]张磊,文志刚,孙钰杰,等.鄂尔多斯盆地合水地区庄36井区油井见水特征分析及治理措施[J].重庆科技学院学报(自然科学版),2012,14(3):27.
[6]ЛИ梅尔库洛哇,Α金兹布尔格.采油中的图表分析法[M].山东东营:石油大学出版社,2001:5–20.
[7]刘德华,陈利新,缪长生,等.具有边底水碳酸盐岩油藏见水特征分析[J].石油天然气学报(江汉石油学院学报),2008,30(4):138.
[8]韩亮,介向涛,冯爱霞,等.F区块机抽井漏失原因分析及防治措施研究[J].天然气与石油,2015,33(1):62–64.
[9]程慧杰.安塞油田长2底水油藏油井堵水技术研究[D].陕西西安:西安石油大学,2014.
[10]吴晓明.华庆地区长6油藏裂缝见水规律研究[D].陕西西安:西安石油大学,2014.
[11]刘智慧.低渗透油田水井增注适应性分析与认识[J].化学工程与装备,2017,9(9):156–157.