西南石油大学学报(自然科学版)

• 地质勘探 • 上一篇    下一篇

基于SDC 敏感属性分析的水平井轨迹优化研究

丁峰1,卢波2,尹成1,朱仕军1,廖细明1   

  1. 1. 西南石油大学地球科学与技术学院,四川成都610500
    2. 中国石油川庆钻探工程有限公司地球物理勘探公司,四川成都610213
  • 出版日期:2014-08-01 发布日期:2014-08-01
  • 基金资助:

    国家重大科技专项(2011ZX05049–001–002);中国石油天然气集团公司科学研究与技术开发项目(2012D–3802)。

Research on Application of SDC Sensitive Attribute Analysis Technique in Horizontal Well Trajectory Optimal Design

Ding Feng1, Lu Bo2, Yin Cheng1, Zhu Shijun1, Liao Ximing1   

  1. 1. School of Geoscience and Technology,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. Geophysical Exploration Company,Changqing Drilling & Exploration corporation,CNPC,Chengdu,Sichuan 610213,China
  • Online:2014-08-01 Published:2014-08-01

摘要:

四川盆地陆相碎屑岩油气藏多为低渗透油气藏,虽然油气资源总量丰富,但单井产量普遍较低,因此需要由多井低产向少井高产转变,由低效开发向高效开发转变。盆地主要储层须家河组目前上产的主要手段是水平井技术,面临的主要问题是优质储层发育带和高含气区的寻找。近年来先后出现多口水平井钻井失误,迫切需要利用物探技术指导水平井设计及跟踪评价。地震勘探的储层预测技术可为地质靶点优选提供较为可靠的目标,但很少涉及水平井轨迹设计、地质导向和随钻跟踪等多个重要环节。如何利用地震属性技术提高预测分析的可靠性和实时指导性是问题的核心和关键。通过研究地震属性优选技术的理论和方法,利用SDC 敏感属性分析技术优化水平井轨迹设计,四川盆地安岳区块实钻表明,该方法能够有效提高水平井地质导向的成功率和储层钻遇率。

关键词: 地震属性, 敏感属性分析, 水平井, 轨迹设计

Abstract:

Most of continental clastic rock reservoirs in Sichuan basin are low permeability reservoirs,although oil and gas resources are rich,the single well production is generally low,so it needs to transform from multi-wells with low production to less wells with high production,from low efficient development to high efficient development. Now the main means in the main reservoirs Xujiahe of Sichuan basin is the horizontal well technology,the main problem we are facing is how to find the high quality reservoir development zones and the high gas zones. With many horizontal well drilling failures occurred in recent years,it is an urgent need to use geophysical technology in the design of horizontal wells and the evaluation of the track. Seismic reservoir prediction technology can provide a more reliable goal for geological target optimization,but it rarely involved in horizontal well trajectory design,geosteering and following the tracks. How to make use of seismic attribute technology to improve the reliability of the forecast analysis and real-time guidance is the core and the key. By studying the theory and method of seismic attribute optimization technology,using SDC sensitive attribute analysis technique to optimize horizontal well trajectory design can improve the success rate of horizontal well geosteering drilling and reservoir drilling rate.

Key words: Seismic attributes, Sensitive attributes analysis, Horizontal well, Trajectory design