Prospecting bore bit suitable for sand

Abstract

The invention relates to the technical field of prospecting components, in particular to a prospecting bore bit suitable for sand. The prospecting bore bit comprises an upper drill body, a lower drillbody and a sand isolation sleeve, a water cycle isolation layer is arranged in the lower drill body, and the lower drill body and the water cycle isolation layer forms a heat dissipating medium cavity; the upper drill body is fixedly connected with the top of the lower drill body, a water inflow cavity and a returning cavity which are capable of being communicated with the inside of the heat dissipating medium cavity are symmetrically formed in the upper drill body, and a plurality of cutter blades are arranged at the bottom of the lower drill body; the sand isolation sleeve sleeves the outerportion of the upper drill body, separators are respectively arranged in the upper and lower ends of the sand isolation sleeve, and a first spiral blade is arranged on the outer portion of the upperdrill body; a second spiral blade is arranged in the water cycle isolation layer, a water flow energy absorption device is installed at the upper end of the second spiral blade and located in the water inflow cavity, and a feeding port is formed in the bottom end of the lower drill body; an annular blocking column is arranged in the feeding port and penetrates to the bottom end of a water cycle isolation chamber. The prospecting bore bit can be fully suitable for prospecting operation conducted on sand.

Description

technical field [0001] The invention relates to the technical field of exploration components, in particular to an exploration drill bit suitable for sandy land. Background technique [0002] The drill bit is the main component of the drilling equipment, its main function is to break the rock and form the wellbore; the rotary drill bit is a drill bit commonly used in the petroleum industry at present, and the rotating drill bit will rotate under the drive of the machine, thus driving the whole drill bit to produce a centripetal Movement, and cracks and breaks the rock through erosion and grinding, which plays the role of downward drilling. [0003] At present, there are many types of drill bits used in the petroleum industry. The drill bits are classified according to different drilling methods. They can be divided into diamond drill bits, roller cone bits and scraper bits. These types of drill bits have significant damage to the hard layer of rock efficiency, but it is not...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many types of drill bits used in the petroleum industry. The drill bits are classified according to different drilling methods. They can be divided into diamond drill bits, roller cone bits and scraper bits. These types of drill bits have significant damage to the hard layer of rock efficiency, but it is not suitable for sandy land exploration. This is because of the characteristics of the sandy land. There are many sands and rocks inside, and the destructive drill bit cannot give full play to its own advantages. In addition, during the drilling process, the hole around the conventional drill bit will be damaged. The nearby sand layer collapses, so that the outer surface of the drill bit is fully covered, so that the torque of the drill bit relying on the drilling rig will increase significantly, so the overall energy consumption will increase, and the failure rate of the drill bit will also increase relatively.

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