玛湖地区致密砾岩油藏小井距水平井立体井网开发研究与应用

doi:10.3969/j.issn.1006-6535.2023.02.017

特种油气藏 ›› 2023, Vol. 30 ›› Issue (2): 122-127.DOI: 10.3969/j.issn.1006-6535.2023.02.017

玛湖地区致密砾岩油藏小井距水平井立体井网开发研究与应用

陈禹欣¹, 赵婷¹, 承宁¹, 马俊修¹, 杨升峰², 李蕴哲²

1.中国石油新疆油田分公司,新疆克拉玛依 834000;
2.北京阳光杰科科技股份有限公司,北京 100192

收稿日期:2022-03-10 修回日期:2022-12-26 出版日期:2023-04-25 发布日期:2023-05-29
作者简介:陈禹欣(1986—),男,高级工程师,2008年毕业于大庆石油学院信息与科学专业,2011年毕业于中国石油大学(北京)油气田开发工程专业,获硕士学位,现主要从事油气田开发理论研究方面工作。
基金资助:
国家油气重大专项“砂砾岩致密油压裂工艺与采油配套技术研究与试验”(2017ZX05070-004)

Research and Application of Vertical Well Network Development for Small-Spacing Horizontal Wells in Tight Conglomerate Reservoirs in Mahu Area

Chen Yuxin¹, Zhao Ting¹, Cheng Ning¹, Ma Junxiu¹, Yang Shengfeng², Li Yunzhe²

1. PetroChina Tuha Oilfield Company, Karamay, Xinjiang 834000;
2. Beijing Sunshine GEO-Tech Co., Ltd., Beijing 100192, China

Received:2022-03-10 Revised:2022-12-26 Online:2023-04-25 Published:2023-05-29

摘要/Abstract

摘要： 为探索玛湖地区致密油藏多层系立体井网整体压裂效果,提高油藏采出程度,在构建三维地质模型和地应力模型的基础上,通过地质工程一体化方法,开展了地应力参数三维空间展布特征研究,分析井间、簇间的应力相互干扰对整体压裂效果的影响,确定了最优簇距、缝长、布缝方式及作业顺序,确定了小井距水平井立体井网开发整体压裂优化参数。研究表明:采用立体井网模式开发,优化簇距、单簇裂缝规模,采用拉链式交叉布缝的方式,能够显著提高储层改造效果,研究区缝控储量动用程度由70%提升至90%。该研究为油层厚度大、连续性较好的叠置储层区块开发提供了借鉴。

关键词: 立体井网, 应力干扰, 整体压裂优化, 致密油藏, 玛湖地区

Abstract: In order to explore the overall fracturing effect of the multi-layered system vertical well network in tight oil reservoirs in the Mahu area and to improve the recovery degree of reservoir, a study on the three-dimensional spatial distribution characteristics of the ground stress parameters was conducted through an integrated geological engineering approach based on the construction of a three-dimensional geological model and a ground stress model, and the influence of inter-well and inter-cluster stress interference on the overall fracturing effect was analyzed, the optimal cluster distance, fracture length, fracture layout method and operation sequence were determined, and the optimized parameters for the development of vertical well pattern for small-well spacing horizontal wells were identified. The study shows that the vertical well pattern mode is adopted for development to optimize the cluster distance and a single cluster fracture scale. The zipper crossed arrangement of fractures can significantly improve the reservoir stimulation effect. The production degree of fracture-controlled reserves in the study area was increased from 70% to 90%. This study provides a reference for the development of stacked reservoir blocks with large oil thickness and good continuity.

Key words: vertical well pattern, stress interference, overall fracturing optimization, tight reservoirs, Mahu area

中图分类号:

TE355

陈禹欣, 赵婷, 承宁, 马俊修, 杨升峰, 李蕴哲. 玛湖地区致密砾岩油藏小井距水平井立体井网开发研究与应用[J]. 特种油气藏, 2023, 30(2): 122-127.

Chen Yuxin, Zhao Ting, Cheng Ning, Ma Junxiu, Yang Shengfeng, Li Yunzhe. Research and Application of Vertical Well Network Development for Small-Spacing Horizontal Wells in Tight Conglomerate Reservoirs in Mahu Area[J]. Special Oil & Gas Reservoirs, 2023, 30(2): 122-127.

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玛湖地区致密砾岩油藏小井距水平井立体井网开发研究与应用

Research and Application of Vertical Well Network Development for Small-Spacing Horizontal Wells in Tight Conglomerate Reservoirs in Mahu Area

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