Mud cyclic purification system and mud purification method during drilling

A technology of circulating purification and mud, applied in mud circulating purification system and mud purification field, can solve the problems of inability to remove small drilling slag, low purification and slag removal efficiency, high energy consumption, etc., to achieve ideal slag removal effect, improve efficiency, The effect of improving purification efficiency

CN105696954AInactive Publication Date: 2016-06-22NINGBO ETONE CONSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-06-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a mud cyclic purification system during drilling and a mud purification method thereof. The mud cyclic purification system is characterized in that a swirler (7) comprises a cylinder body (7.1), an inverted cone body (7.2) and an inverted cone hopper (7.3); a sand outlet (7.5) in the bottom of the inverted cone body (7.2) is in threaded connection with the inverted cone hopper (7.3) through an upper flange plate (8) and a lower flange plate (9); a sand outlet pipe (19) is fixed to the bottom end of the inverted cone hopper (7.3) of the swirler (7); and a first flow regulating valve (20) is arranged on the sand outlet pipe (19). The method comprises the key steps that mud in the swirler (7) is classified under the action of centrifugal force; and most drilling slags are thrown to the cylinder wall of a working cylinder, and rotate downwards to pass through the sand outlet (7.5), the inverted cone hopper (7.3) and the sand outlet pipe (19) to be completely discharged from the mud circulation. According to the purification system and the purification method, the energy consumption can be reduced, and the hole cleaning and deslagging efficiency is improved.
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Description

technical field

[0001] The invention relates to the field of drilling construction in civil engineering, in particular to a mud circulation purification system during drilling and a mud purification method during drilling. Background technique

[0002] When the drill pipe is drilled, a large amount of mud is needed. The mud mainly plays the role of protecting the wall, cooling the drill bit, taking away the drilling slag and softening the soil. The mud can be pre-prepared and stored in the slurry tank. When the drill pipe is drilled, the mud is pumped into the borehole. Of course, when drilling in the cohesive soil layer, the mud can also be directly injected to reduce the amount of prefabricated mud. cut costs.

[0003] Of course, to use the viscosity of the mud to take away the drilling slag, it is necessary to use a mud circulation purification system to circulate the mud. The mud circulation and purification system in the prior art includes a hollow drill pipe, a mud o...

Examples

Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 , figure 2 As shown, the mud circulation purification system during drilling of the present invention includes a hollow drill pipe 1, a slurry outlet pipe 2, a mud box 4 with a filter screen 3, a settling box 6 and a cyclone 7. The bottom end of the drill pipe 1 is a slurry inlet and the upper end is a slurry outlet. The drill pipe 1 is fixed with an air intake pipe 5 communicating with the inner cavity of the drill pipe 1. Specifically, the bottom of the drill pipe 1 is provided with a drill bit 16, and the drill bit 16 is provided with a female button and the drill pipe 1 is provided with a male button, and the drill bit 16 is connected with the male and female of the drill pipe 1 by tightening. The male buckle communicates with the inner cavity of the drill pipe 1 . Of course, the intake pipe 5 communicates with a...