纳米粒子增强泡排剂性能及影响因素研究  

Foam unloading agent stabilized by nanoparticles and the study of its affecting factors

作　　者：武俊文[1] 贾文峰[2] 雷群[1] 熊春明[1] 曹光强[1] 张建军[1] 李隽[1] 廖东 胡志国[4] Wu Jun-wen Jia Wen-feng Lei Qun Xiong Chun-ming Cao Guang-qiang Zhang Jian-jun Li Jun Liao Donga Hu Zhi-guo(PetroChina Research Institute of Petroleum Ezploration ＆ Development , Beij ing 100083,China SINOPEC Research Institute of Petroleum Ergineering ,Beijing 100101 ,China Geological Erploration and Development Research Institute,Chuanqing Drilling Engineering Co.Ltd.,Chengdu 610051,China Chongqing Gas field ,PetroChina Southwest Oil and Gas Field Company ,Chongqing 400021 ,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石化石油工程技术研究院,北京100101 [3]中国石油集团川庆钻探工程有限公司地质勘探开发研究院,四川成都610051 [4]西南油气田分公司重庆气矿,重庆400021

出　　处：《天然气地球科学》2017年第8期1274-1279,共6页Natural Gas Geoscience

基　　金：中国石油股份公司科技管理部重大科技专项"深层油气勘探开发关键技术研究"课题"深层油气藏改造;堵水与举升技术"(编号:2014-32-07)资助

摘　　要：针对深层产水气井温度高(110~150℃)、矿化度高的特点,通过在普通液相泡排剂中引入合适尺寸、疏水程度的纳米粒子充当固态稳泡剂,使其吸附在气水界面形成稳定的空间壁垒,阻止气泡的聚并和歧化,从而极大地提高了普通液相泡排剂的起泡性与稳定性。为了给现场施工提供指导,利用高温高压泡沫评价仪实时评价研究了添加纳米粒子的泡排剂随浓度变化的性能,同时还考察了矿化度、温度、压力这3种外界因素对添加纳米粒子的泡排剂性能的影响。添加纳米粒子的泡排剂在矿化度为250 000mg/L下,其初始起泡体积V_0和泡沫半衰期t_(1/2)分别高达2 180mL和760s;在150℃高温下其初始起泡体积V_0与泡沫半衰期t_(1/2)分别高达1 925mL和700s;这些数据证明纳米粒子对泡排剂性能具有显著增强作用。该添加纳米粒子的泡排剂在重庆气矿现场应用效果良好。In this study the nanoparticles of suitable size and hydrophobic degree were introduced in the liquid as solid foam stabilizer to solve the problem of unloading of deep gas well with high gas temperature （110-150℃） and salinity. The nanoparticles can adsorb onto the gas/water interface to form a solid film which will prevent the coalescence and coarsening of bubbles, therefore the foaming ability and foam stabilizing ability of liquid foam unloading agent were greatly improved.In order to provide guidance for use in gas well,the foaming properties of different concentration of nanoparticles stabilized foam unloading agent was tested in real-time using high temperature and high pressure foam evaluation instrument. Meanwhile, the external factors such as salinity,temperature and pressure on the properties of nanoparticles stabilized foaming agent were also examined, The results show that its initial bubble volume V0 and half-life tl/2 reached as large as 2 160mL and 765s volume V0 and half-life t 1/2 reached as h particles have strong ability to stabilize foam unloading agent performs well. respectively under 250 000m igh as 1 925mL and 700s at 1 the foams.The field applicati g/L salinity. Besides, its initial bubble 50℃.These data proved that the nanoon results show that the nanoparticles

关 键 词：排水采气 纳米粒子 泡排剂 气井 

分 类 号：TE39[石油与天然气工程—油气田开发工程]