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Drilling brine discharging device and drilling brine discharging method for salt cavern gas storage

A technology of gas storage and salt cavern, which is applied to mining equipment, earth-moving drilling, mining equipment, etc., can solve the problems of complex mining and injection process, low utilization rate of salt layer, small volume of salt cavern, etc., so as to shorten the time of dissolving cavern. , The effect of expanding the volume of the salt cavity and easy operation

Pending Publication Date: 2022-07-08
PETROCHINA CO LTD +1
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Problems solved by technology

[0003] In order to quickly discharge the brine and residue at the bottom of the salt cavern gas storage, the present invention provides a drilling brine discharge device and a drilling brine discharge method for the salt cavern gas storage, the drilling brine discharge device of the salt cavern gas storage The method of drilling and brine discharge can quickly discharge the brine and residue at the bottom of the salt cavern gas storage, and solve the problems of complex production and injection procedures, small salt cavity volume and low utilization rate of the salt layer in the prior art

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  • Drilling brine discharging device and drilling brine discharging method for salt cavern gas storage

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Embodiment Construction

[0026] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0027] A device for drilling and discharging brine for a salt cavern gas storage, comprising a double-layer pipe string 1 and a drill bit 2 arranged up and down, the double-layer pipe string 1 contains an inner pipe 11 and an outer pipe 12 arranged inside and outside, and the inner pipe 11 and the outer pipe An annular cavity 13 is formed between 12, the lower end of the inner tube 11 is connected and fixed with the drill bit 2, the lower end of the outer tube 12 and the drill bit 2 are connected and fixed by a screen tube 14, the screen tube 14 is sleeved outside the inner tube 11, and the drill bit 2 There is a nozzle 21 on it, the fluid in the inner pipe 11 can be sp...

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Abstract

The invention provides a drilling brine discharging device and a drilling brine discharging method.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging method of the salt cavern gas storage.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging method of the salt cavern gas storage.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging device of the salt cavern gas storage.The drilling brine discharging and the lower end of the outer pipe (12) is connected with the drill bit (2) through a screen pipe (14). According to the drilling brine discharging device and method for the salt cavern gas storage, brine and residues at the bottom of the salt cavern gas storage can be rapidly discharged, and the problems that in the prior art, the production and injection process is complex, the salt cavity size is small, and the salt layer utilization rate is low are solved.

Description

technical field [0001] The invention relates to the technical field of construction of a salt cavern gas storage, in particular to a drilling brine discharge device for a salt cavern gas storage, and a method for drilling and discharging brine of the salt cavern gas storage. Background technique [0002] The research on the construction technology of salt-cavern gas storage has a long history abroad, and many technical achievements related to salt-cavern gas storage have been formed, while the domestic research on this technology development started relatively late. Due to the different geological conditions at home and abroad, my country's geological conditions are complex, with thin salt layers, many interlayers, and high insoluble content. It is impossible to fully learn from foreign technologies. Domestic research on the technical development of salt cavern underground gas storage still needs to be improved. and place of innovation. Good and efficient cavity dissolution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/16
CPCE21F17/16
Inventor 万继方李景翠李国韬夏焱袁光杰金根泰张弘刘天恩付盼庞宇晗
Owner PETROCHINA CO LTD
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