岩性油气藏 ›› 2015, Vol. 27 ›› Issue (6): 132–137.doi: 10.3969/j.issn.1673-8926.2015.06.018

• 油气田开发 • 上一篇    下一篇

苏里格气田水平井随钻地质导向技术及应用

孙卫锋1,2,张 吉1,2,马志欣1,2,郝 骞1,2,石林辉 1,张志刚   

  1.  1. 中国石油长庆油田分公司 苏里格气田研究中心,西安 710018 ;2. 低渗透油气田勘探开发国家工程实验室,西安 710018
  • 出版日期:2015-12-20 发布日期:2015-12-20
  • 第一作者:孙卫锋( 1978- ),男,硕士,工程师,主要从事石油地质方面的研究工作。 地址:( 710018 )陕西省西安市未央区凤城四路 73 号苏里格大厦 2513 室。 E-mail : swf_cq@petrochina.com.cn 。
  • 基金资助:

    国家重大科技专项“低渗低丰度砂岩气藏经济有效开发技术”(编号: 2011ZX05015-001 )资助

Geosteering technology of horizontal well and its application in Sulige Gas Field

Sun Weifeng 1,2,Zhang Ji 1,2,Ma Zhixin1,2,Hao Qian 1,2,Shi Linhui 1,Zhang Zhigang   

  1. 1. Research Center of Sulige Gas Field , PetroChina Changqing Oilfield Company , Xi ’ an 710018 , China ; 2. National Engineering Laboratory for Exploration and Development of Low Permeability Oil & Gas Fields , Xi ’ an 710018 , China
  • Online:2015-12-20 Published:2015-12-20

摘要:

苏里格气田是典型的低渗、低压、低丰度的强非均质性致密岩性气田。 水平井开发对于提高单井产量作用显著,然而水平井随钻地质导向难度大是制约其高效开发的瓶颈。针对地质导向过程中微幅构造难判断、井底岩性难识别以及易钻遇泥岩隔夹层等问题,在水平井部署与设计的基础上,通过分析水平段钻遇泥岩时的具体情况,并结合砂体垂向叠置关系及储层内部构型分析,总结了一套适合苏里格气田盒 8 段气藏的水平段导向调整措施,并以 AH 井实钻为例加以说明。 多年的水平井开发实践表明,采用水平井随钻地质导向技术进行水平井开发,平均砂岩钻遇率达 85.7%,平均有效储层钻遇率达 62.5%,水平井单井产量是直井的 3~5 倍。

关键词: 膏质结核溶模孔, 风化壳储层, 成因演化, 马家沟组, 鄂尔多斯盆地

Abstract:

 Sulige Gas Field is a typical tight gas reservoir characterized by low permeability, low pressure, low abundance and strong heterogeneity. Horizontal well development is significant for well production increase. However, horizontal well drilling Geosteering difficulty is the bottleneck restricting the development of efficient technologies. There are problems such as mudstone interlayers, difficulties for judging structure and bottom lithology during the process of drilling geosteering. On the basis of deployment and design of horizontal well technology, by analyzing the specific circumstances of the horizontal section drilling mud, combined with the analysis of vertical stacking sand relations and internal reservoir, this paper summarized a set of adjustment measures of horizontal section guiding suitable for gas reservoirs of He 8 member, and illustrated by taking the actual drilling from AH well as an example. The development of horizontal wells for many years proved that by using geosteering technology for horizontal well development, the average sandstone drilled rate can reach 85.7%, the average effective reservoir drilled rate is 62.5%, and horizontal well production is 3 to 5 times than that of vertical well.

Key words: pores evolved from anhydrite and gypsum nodules, weathering crust reservoir, genesis evolution, Majiagou Formation , Ordos Basin

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