石油钻采工艺2017，Vol.39Issue(3)：388-392,5.DOI:10.13639/j.odpt.2017.03.024
一种低密度稠油热采复合封窜剂的研制与应用
Development and application of low-density composite channeling blocking agent for heavy-oil thermal recovery
王孟江 1孙迎胜 1杨军虎 1常国栋 1燕收广 1李新丹1
作者信息
- 1. 中国石化河南油田分公司石油工程技术研究院
- 折叠
摘要
Abstract
Conventional channeling blocking agent used for thermal recovery is lost easily in low-pressure layers or voided layers and presents poor channeling blocking effect in thick oil layers. In this paper, low-density (<1.1 g/cm3) composite channeling blocking agent was researched and developed to deal with these problems. The effect of water/cement ratio and temperature on the performance of channeling blocking agent was investigated and the properties of channeling blocking agent were evaluated from the aspects of high temperature resistance, pressure resistance, core plugging and steam erosion resistance. It is shown that this low-density composite channeling blocking agent under the temperature of 300 ℃ presents strong steam erosion resistance with volume shrinkage 8.47%, core plugging rate higher than 99% and core breakthrough pressure higher than 0.13 MPa/cm. It was tested on site in 7 well groups. And it is shown that the plugging rate of steam channeling passage is 94.4%. This technology is promising to apply in the middle and late stages of heavy-oil thermal recovery.关键词
低密度/封窜剂/水灰比/封堵率/稠油热采井Key words
low density/channeling blocking agent/water/cement ratio/plugging rate/heavy-oil thermal recovery well分类
能源科技引用本文复制引用
王孟江,孙迎胜,杨军虎,常国栋,燕收广,李新丹..一种低密度稠油热采复合封窜剂的研制与应用[J].石油钻采工艺,2017,39(3):388-392,5.
