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SDQ - 91型随钻测量定向取心钻具包括定向取心器和随钻测量仪 2个部分。叙述了其工作原理、技术性能和结构组成 ;说明了采用 4个岩心定向参数由微机求解岩层构造面产状的方法 ;介绍了试验情况及结果
The SDQ - 91 LWD directional coring tool consists of two parts: a directional coring and a while drilling gauge. Describes its working principle, technical performance and structural composition; describes the use of four core orientation parameters by computer to solve the formation of rock formation surface method; describes the test results and results