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探矿工程装备工业公司于1983年3月11日至18日在成都召开了《复杂岩层护孔堵漏技术攻关项目协调会》和《岩心定向钻探用偏心楔、定向器具选型会》。《攻关协调会》在回顾和总结七九年以来泥浆工作取得
Prospecting Engineering Equipment Industry Co., Ltd. held the “Coordination Meeting for Keystone Plugging Technology Research Project of Complex Rock Stratum” and “Selection of Eccentric Wedges and Directional Devices for Core Directional Drilling” held in Chengdu from March 11 to March 18, The HSC made a review and summary of mud work since 1979