Application of Double-hole Design in Deep Coring Drilling in Cangzhou Salt Min

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Application of Double-hole Design in Deep Coring Drilling in Cangzhou Salt Min
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                        JING LongJING Long
Hebei Bureau of Geology and Mineral Resources No.4 Hydrological Engineering Geology Team
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LI WeiLI Wei
Hebei Bureau of Geology and Mineral Resources No.4 Hydrological Engineering Geology Team
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CUI Guo-shuCUI Guo-shu
Hebei Bureau of Geology and Mineral Resources No.4 Hydrological Engineering Geology Tea
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Affiliation:Hebei Bureau of Geology and Mineral Resources No.4 Hydrological Engineering Geology Team,Hebei Bureau of Geology and Mineral Resources No.4 Hydrological Engineering Geology Team,Hebei Bureau of Geology and Mineral Resources No.4 Hydrological Engineering Geology Tea
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Abstract:

In Cangzhou deep salt mine survey project, coring in 500～3290m section of the completed ZK002 was carried out. Deep and shallow double-hole was designed and geological and petroleum drilling equipments were used respectively. The conventional core drilling technology and drilling coring technology were combined to realize the complementary advantages of 2 types of equipment and different coring processes, the construction risk reducing, drilling quality ensuring, construction cost saving and construction period shortening.

Key words:deep drilling; coring technology; salt mine survey

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Received:February 21,2017
Revised:October 08,2017
Adopted:October 31,2017
Online: December 20,2017
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