玛湖致密砾岩油藏水平井生产动态分析及产能预测——以玛131小井距立体开发平台为例

doi:10.7657/XJPG20220409

新疆石油地质 ›› 2022, Vol. 43 ›› Issue (4): 440-449.doi: 10.7657/XJPG20220409

玛湖致密砾岩油藏水平井生产动态分析及产能预测——以玛131小井距立体开发平台为例

曹炜¹(), 鲜成钢¹(), 吴宝成², 于会永², 陈昂², 申颍浩¹

1.中国石油大学（北京）非常规油气科学技术研究院,北京 102249
2.中国石油新疆油田分公司工程技术研究院,新疆克拉玛依 834000

收稿日期:2021-10-25 修回日期:2022-01-06 出版日期:2022-08-01 发布日期:2022-07-26
通讯作者: 鲜成钢 E-mail:15680460218@163.com;xianchenggang@cup.edu.cn
作者简介:曹炜（1999-）,男,硕士研究生,陕西西安人,地质工程一体化,(Tel)15680460218 (E-mail) 15680460218@163.com
基金资助:
中国石油战略合作专项(ZLZX2020-01)

Production Performance Analysis and Productivity Prediction of Horizontal Wells in Mahu Tight Conglomerate Reservoirs：A Case of Ma 131 Dense-Spacing 3D Development Pad

CAO Wei¹(), XIAN Chenggang¹(), WU Baocheng², YU Huiyong², CHEN Ang², SHEN Yinghao¹

1. Research Institute of Unconventional Oil & Gas Science and Technology,China University of Petroleum,Beijing 102249,China
2. Research Institute of Engineering Technology,Xinjiang Oilfield Company,PetroChina,Karamay,Xinjiang 834000,China

Received:2021-10-25 Revised:2022-01-06 Online:2022-08-01 Published:2022-07-26
Contact: XIAN Chenggang E-mail:15680460218@163.com;xianchenggang@cup.edu.cn

摘要/Abstract

摘要：

为厘清玛131小井距立体开发平台的产能水平和生产动态特征,进行了生产特征、不稳定产量及产能预测,构建了动态分析及产能预测工作流程,确定了等效地层渗透率、有效裂缝半长等预测单井产能的关键参数。目标油藏原油易脱气,早期下入井下气嘴可有效减轻脱气现象;返排前期油嘴过大,会导致裂缝体积大幅减小,需要控压返排;基于递减曲线和解析模型的P50产能预测结果可以互为补充,提供更为准确合理的产能预测区间;百三段水平井的平均有效裂缝半长大于百二段一亚段,其井距存在优化的空间。

关键词: 玛湖油田, 致密砾岩油藏, 有效裂缝半长, 等效地层渗透率, 单井控制储量, 动态分析, 产能预测

Abstract:

In order to clarify the productivity and production performance of Ma131 dense-spacing 3D development pad,the production characteristics and unstable production/productivity were predicted,a workflow for performance analysis and productivity prediction was established,and the key parameters such as equivalent formation permeability and effective fracture half-length,etc. were determined for single well productivity prediction. Oil in the target reservoir is easy to be degassed,which may be effectively alleviated by running the gas nozzle into the hole in the early stage. The use of over-sized oil nozzle in the early stage of flowback may greatly decrease the fracture volume; in this case,a pressure-managed flowback is necessary. The P50 productivity prediction results obtained from the production decline curves and the analytical model can complement each other,providing a more accurate and reasonable productivity prediction interval. The average effective fracture half-length of horizontal well in T₁b₃ is greater than that in T₁b1 2; therefore,the well spacing can be further optimized.

Key words: Mahu oilfield, tight conglomerate reservoir, effective fracture half-length, equivalent formation permeability, single well controlled reserves, performance analysis, productivity prediction

中图分类号:

TE331

曹炜, 鲜成钢, 吴宝成, 于会永, 陈昂, 申颍浩. 玛湖致密砾岩油藏水平井生产动态分析及产能预测——以玛131小井距立体开发平台为例[J]. 新疆石油地质, 2022, 43(4): 440-449.

CAO Wei, XIAN Chenggang, WU Baocheng, YU Huiyong, CHEN Ang, SHEN Yinghao. Production Performance Analysis and Productivity Prediction of Horizontal Wells in Mahu Tight Conglomerate Reservoirs：A Case of Ma 131 Dense-Spacing 3D Development Pad[J]. Xinjiang Petroleum Geology, 2022, 43(4): 440-449.

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玛湖致密砾岩油藏水平井生产动态分析及产能预测——以玛131小井距立体开发平台为例

Production Performance Analysis and Productivity Prediction of Horizontal Wells in Mahu Tight Conglomerate Reservoirs：A Case of Ma 131 Dense-Spacing 3D Development Pad

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