Vertical-shaft-type drilling technology for uranium mine in steeply-dipping and dewatered clastic rock formation and application

A vertical shaft, clastic rock technology, applied in the direction of drilling equipment, earthwork drilling, drilling equipment and methods, etc., can solve the problems of hole wall drop, difficult exploration work, mud leakage, etc., to achieve improved well deviation control, The effect of solving hole wall collapse and improving timeliness

Inactive Publication Date: 2020-05-15
中广核铀业新疆发展有限公司 +1
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AI Technical Summary

Problems solved by technology

However, with the existing drilling technology, a series of problems such as hole wall drop, collapse, diameter shrinkage, and mud loss are prone to occur during the drilling process. These unfavorable factors undoubtedly increase the drilling scrap rate and make it difficult to smoothly advance and carry out the exploration work.

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  • Vertical-shaft-type drilling technology for uranium mine in steeply-dipping and dewatered clastic rock formation and application
  • Vertical-shaft-type drilling technology for uranium mine in steeply-dipping and dewatered clastic rock formation and application

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, further describe the present invention through embodiment, but do not limit the scope of the present invention in any way.

[0024] The invention provides a new vertical-axis drilling technology in the exploration of uranium deposits in steep dry clastic rock formations. By using a vertical-axis drilling rig combined with a rope core drilling process, on this basis, it is feasible to combine drilling tools with drilling engineering parameters. With dynamic optimization, a set of practical drilling technology with stable drilling performance, strong operation controllability, greatly reduced drilling risk and greatly improved construction efficiency has been formed.

[0025] In the following examples, during the mechanical core drilling construction process, the appropriate drilling and mud parameters are used to solve the technical problems such as leaks, deviations, and collapsed holes during the drilling construction proc...

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Abstract

The invention discloses a vertical-shaft-type drilling technology for a uranium mine in a steeply-dipping and dewatered clastic rock formation and application. A vertical-shaft-type drilling machine is adopted to be matched with a rope coring drilling technology, then a drilling assembly is adopted, and feasibility dynamic optimization of drilling engineering parameters is conducted. The vertical-shaft-type drilling technology comprises the steps that the drilling technology is adjusted according to an actual drilling formation in the area where drilling engineering is located; the drilling assembly is adjusted according to the hardness of rock; and the drilling parameters are adjusted according to the depth of the formation and the difference of diagenetic degrees, feasibility dynamic optimization of the drilling engineering parameters is conducted, and dynamic optimization of the rotation speed, the bit pressure and the pump volume is included. By adopting the drilling technology provided by the invention, practicability is achieved, drilling performance is stable, operation is highly controllable, the drilling risk is greatly reduced, and the construction efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of mineral resources exploration, relates to field drilling construction technology, in particular to a new vertical axis drilling process and its application in uranium ore exploration in steep dry clastic rock formations. Background technique [0002] Uranium drilling is a relatively mature drilling technology. However, for drilling strata encountered in different exploration areas, the practical methods are different, and the technical difficulties are also different. [0003] As one of the important means of exploration, drilling plays an important role in uranium exploration. However, with the existing drilling technology, a series of problems such as hole wall drop, collapse, diameter shrinkage, and mud loss are prone to occur during the drilling process. These unfavorable factors undoubtedly increase the drilling scrap rate and make it difficult to smoothly advance and carry out the exploration work....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B25/02
CPCE21B7/00E21B25/02
Inventor 何平波刘玉龙李新卫杨凯马汉峰汪志平
Owner 中广核铀业新疆发展有限公司
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