石油钻采工艺2016，Vol.38Issue(2)：166-170,5.DOI:10.13639/j.odpt.2016.02.007
大港油田段六拔区块调整井固井技术
Cementing technology of adjustment wells in Area Duanliuba of Dagang Oilfield
王海滨 1刘开强 2廖兴松 1程小伟 2张兴才 2郭小阳2
作者信息
- 1. 中国石油天然气股份有限公司大港油田分公司
- 2. 西南石油大学材料科学与工程学院
- 折叠
摘要
Abstract
The Duanliubo Block of Dagang Oilfield is characterized by deep burial depth and long well interval in reservoirs, so under the comprehensive influence of long-term water injection and edge-bottom water, the area appeared multi-pressure systems and complex water-oil relation, leading to difficulty in improving cementig quality. Based on the analysis of the early cementing data and combined with the actual situation, this paper presents the idea that adjusting rheological properties and pH value of silicate-based drilling fluids is key technology for removing the “virtual filter cake”. A new evaluation method was used to optimize the cement slurry formulation which has short liguid-solid transformation time and can be fast setting and early strong. In addition, a inverted pulp-column structure and over-balance pressure cementing technology was used with heavy spacer, high density lead slurry and conventional density tail slurry. These technologies were continuously applied to 12 wells, such as Duan38-30, the percent of pass was 100% and high-quality interval rate of cementing quality was improved from 23% to 72% in the area of Duanliubo. And the cementing technologies which were applicable to Dagang Oilfield adjustment wells were formed.关键词
固井/调整井/高压低渗油藏/倒浆柱结构/钻井液性能/大港油田Key words
cementing/adjustment well/high pressure and low permeability reservoir inverted pulp-column structure/drilling fluid properties/Dagang Oilfield分类
能源科技引用本文复制引用
王海滨,刘开强,廖兴松,程小伟,张兴才,郭小阳..大港油田段六拔区块调整井固井技术[J].石油钻采工艺,2016,38(2):166-170,5.
