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PT3井是冀东油田布置在渤海湾的一口重点风险探井。该井完钻井深4 310 m,实测井底温度1 2 9℃,属于高温深井长封固段固井,使用中低温缓凝剂调配的水泥浆体系缓凝剂加量大且封固段顶部水泥浆有超缓凝现象。BCR-260L是渤星公司研发的一种中高温缓凝剂,其适用温度更广,搭配其他固井添加剂调配出的抗高温水泥浆体系,在PT3井得到应用,成功解决了高温、长封固段顶部水泥浆超缓凝等固井难题,固井质量优质。
PT3 well is Jidong Oilfield layout in the Bohai Bay a key risk exploration wells. The well was drilled at a depth of 4 310 m with a measured bottomhole temperature of 1 2 9 ° C. It belongs to the cementing system with a long sealing zone at high temperature and a long time. The cement slurry system using medium- and low- The top of the slurry with super-slow coagulation phenomenon. BCR-260L is a mid-high temperature retarder researched and developed by Bo Star Co., Ltd. It is suitable for the application of the high temperature resistant cement slurry system formulated with other cementing additives in the PT3 well, and has successfully solved the problems of high temperature, long seal Solidification at the top of the solidification of cement super slow set cementing problems, cementing quality and high quality.