海上油田灰岩裂缝性井漏处理实践

Treatment Practice of Fractured Loss in Offshore Oilfield with Limestone

南海东部地区陆丰13-1油田A井钻井过程中,钻遇灰岩发生裂缝性漏失,漏速大,桥接材料堵漏困难。针对该井灰岩井段地层特点及漏失情况,该井采用了桥接材料堵漏、随钻堵漏并强钻穿灰岩漏失井段、挤水泥堵漏等工艺,最终堵漏成功。陆丰13-1油田A井灰岩裂缝性井漏堵漏工艺技术及现场实践,对于其他类似油气井井漏提供了很好的施工经验和借鉴。

In the process of drilling well A of Lufeng 13-1 oilfield in the eastern part of the South China Sea,fracture leakage occurs during drilling into limestone,In case of high leakage rate,it is difficult to plug the leakage with bridging materials.According to the formation characteristics and leakage situation of limestone well section in this well,bridging material plugging,plugging while drilling and forced drilling through limestone leakage well section,squeezing cement plugging technology were adopted,It was finally plugging successfully.The plugging technology and field practice of limestone fractured well leakage in Well A of Lufeng 13-1 oilfield can provide good construction experience and reference for wells with similar conditions.