秦家屯油田SN142区块井网及层系适应性分析
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摘要
井网与层系的合理性是影响油田开发效果和采收率的重要因素。从井网与砂体、井网与沉积微相的匹配关系、注水受效方向、井距与物性的关系、套损井的影响等方面评价井网适应性、层内及层间储量动用情况,表明了秦家屯142区块存在注水单相受效比高、层间及层内矛盾突出特征;提出了将农V3小层单独作为一套层系开采,农V2、农V4和农VI1三个小层作为另一套层系合采,以解决层间矛盾;根据剩余油分布等适时部署新井,对注水淹层抽稀井网,从而解决了平面矛盾,改善了开发效果,提高了油田采收率。
The rationality of development well pattern and strata is an important way to improve oil field development effect and enhance oil recovery. This paper evaluates well pattern adaptability, intra-layer and inter-layer reserves utilization in terms of matching relationship between well pattern & sand body and sedimentary microfacies, effective direction of water injection, relationship between well spacing and physical properties, and influence of casing damage, and analyses the contradictions of high single-phase water injection efficiency ratio, inter-layer and intra-layer outburst in block 142 of Qinjiatun. It is proposed that the small layers of NongV3 should be exploited as a set of layers separately, and that the small layers of Nong V2, Nong V4 and Nong VI1 should be exploited as another set of layers to solve the contradiction between layers. New wells are deployed in time according to the distribution of remaining oil. The main watered-out layer is thinned to solve plane contradiction, so the development effect is improved and oil recovery is improved.
The rationality of development well pattern and strata is an important way to improve oil field development effect and enhance oil recovery. This paper evaluates well pattern adaptability, intra-layer and inter-layer reserves utilization in terms of matching relationship between well pattern & sand body and sedimentary microfacies, effective direction of water injection, relationship between well spacing and physical properties, and influence of casing damage, and analyses the contradictions of high single-phase water injection efficiency ratio, inter-layer and intra-layer outburst in block 142 of Qinjiatun. It is proposed that the small layers of NongV3 should be exploited as a set of layers separately, and that the small layers of Nong V2, Nong V4 and Nong VI1 should be exploited as another set of layers to solve the contradiction between layers. New wells are deployed in time according to the distribution of remaining oil. The main watered-out layer is thinned to solve plane contradiction, so the development effect is improved and oil recovery is improved.
引文
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[2] 陈小凯,青春,曾双红.轮南油田TI油组整体调驱效果分析[J].天然气与石油,2018(36):75-76.
[3] 易涛.合水油田开发层系适应性分析评价[J].辽宁化工,2018(47):1054-1055.
[4] 张云宝,卢祥国,王婷婷,等.渤海油藏优势通道多级封堵与调驱技术[J].油气地质与采收率,2018(25):83-86.
[5] 杨勇,许鹏,王建,等.断块油藏高含水期分区井网调控技术[J].油气地质与采收率,2016(23):54-55.
[6] 王桂杰.正韵律储层“2+3”调驱技术的研究与应用[J].石油天然气学报,2009(31):293-295.
[7] 汤小燕,王剑.扶余油田剩余油分布主控因素剖析[J].地质科技情报,2015(34):102-105.
[8] 呼舜兴,耿师江,侯平舒,等.非均质复杂断块油藏沉积微相研究及应用[J].西安石油学院学报,2003(18):23-26.
[9] 凌浩川,周海燕,付蓉,等.渤海油田窄河道油藏注水能力分析[J].海洋石油,2018(38):47-49.
[10] 孙卫,王洪建,吴诗平,等.三间房组油藏沉积微相及其对注水开发效果影响研究[J].沉积学报,1999(17):443-448.