摘要
河南油田经过多年持续的高速开采导致地层出砂、亏空严重,套管承压过大,井筒状况逐年变差,套管损坏十分严重,管外窜槽井逐年增多。针对油水井管外窜问题,开展了高强度低密度管外封窜技术研究,研制开发出的高强度低密度管外封窜剂密度为1.28 g/cm3。室内实验性能测定显示,水样矿化度对封窜剂初凝时间及突破压力梯度影响微弱,且封窜剂与钢体界面胶结强度高、耐温性能优。现场应用表明,措施后日产液8.5 m3,日产油1.2 t,效果明显。
The continuous high-speed exploitation in Henan oilfield for many years has resulted in serious sand production, formation deficit, too much casing pressure, worse wellbore conditions, serious casing damage, and more channeling wells outside the tube year by year. In view of the problem of channeling out of oil-water wells, the technology of channeling sealing agent with high-strength and low-density was studied and the density of channeling sealing agent was 1.28 g/cm3. The results show that the salinity of water sample has little effect on the initial setting time and breakthrough pressure gradient strength of the channeling sealer. The interface bonding strength between channeling sealer and steel body is high and the temperature resistance is excellent. The field application shows an obvious effect, and that the daily liquid output is 8.5 m3, the daily oil output is 1.2 t.
作者
先花
温栋良
杜玉川
张喜玲
XIAN Hua;WEN Dongliang;DU Yuchuan;ZHANG Xiling(Petroleum Engineering Technology Research Institute of Henan Oilfield Company,SINOPEC,Nanyang,Henan 473132,China)
出处
《石油地质与工程》
CAS
2020年第5期106-108,共3页
Petroleum Geology and Engineering
关键词
河南油田
高强度
低密度
管外封窜剂
性能评价
Henan oilfield
high strength
low density
channeling sealing agent for outside tube
performance evaluation
