Brine mining well casing pipe and brine mining well structure

A technology of well casing and well structure, applied in casing, wellbore/well components, drill pipe, etc., can solve the problems of the collapse of the communication channel, the inability of the brine well to be put into production, and the formation pressure is high, so as to avoid the communication channel being blocked. Effect

Pending Publication Date: 2020-07-17
ANTON OILFIELD SERVICES (GRP) LTD
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Problems solved by technology

In order to obtain higher salt dissolution efficiency and increase brine production, most brine extraction wells are completed in the horizontal section between water injection wells and brine production wells, but this method is mainly suitable for mines with deeper buried depths. Shallow (more than 3500m vertical depth), low formation pressure coefficient, stable ore development, and high salt layer purity; for ultra-deep salt mines, the geological conditions are complex, the formation pressure is high, and there are many interlayers. The Unicom channel collapsed, resulting in blockage, which prevented the brine well from being put into production

Method used

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  • Brine mining well casing pipe and brine mining well structure
  • Brine mining well casing pipe and brine mining well structure
  • Brine mining well casing pipe and brine mining well structure

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Embodiment Construction

[0026] For further elaborating the technical means and effects that the present invention takes to reach the predetermined invention purpose, below in conjunction with accompanying drawing and preferred embodiment, to its specific implementation mode, Structure, characteristic and effect thereof are as follows in detail.

[0027] On the one hand, the embodiment of the present invention provides a brine production well casing 3, such as figure 1 As shown, it is used for the brine extraction well structure, and the brine extraction well structure includes: a water injection well, including: a vertical well section 11, a deflection section 12 and a horizontal section 13 connected in sequence; One end of the deflection end is connected; the casing 3 of the brine production well includes: the pipe wall and the flow passage surrounded by the pipe wall, and a plurality of passages communicating with the flow passage are formed on the pipe wall The hole 34 is used for setting the cas...

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Abstract

The invention discloses a brine mining well casing pipe and a brine mining well structure, relates to the technical field of mineral salt mining, and solves the problem that a brine mining well is likely to be blocked. The invention has the main technical scheme that the brine mining well casing pipe comprises a pipe wall and a flowing channel surrounded by the pipe wall, wherein a plurality of through holes which communicate with the flowing channel are formed on the pipe wall, the brine mining well casing pipe is used for being arranged on the horizontal section of a water injection well, and the flowing channel is used for forming a communication channel on the horizontal section. The invention is mainly used for manufacturing the brine mining well casing pipe.

Description

technical field [0001] The invention relates to the technical field of mineral salt mining, in particular to a brine mining well casing and a brine mining well structure. Background technique [0002] At present, domestic "u"-shaped wells, that is, connecting wells, are widely used in the brine mining industry. This well type uses the connecting channel between two wells to obtain underground mineral salt resources by injecting water from one well and producing brine from the other. In order to obtain higher salt dissolution efficiency and increase brine production, most brine extraction wells are completed in the horizontal section between water injection wells and brine production wells, but this method is mainly suitable for mines with deeper buried depths. Shallow (more than 3500m vertical depth), low formation pressure coefficient, stable ore development, and high salt layer purity; for ultra-deep salt mines, the geological conditions are complex, the formation pressure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00E21B43/28E21B43/25
CPCE21B17/00E21B43/28E21B43/25
Inventor 李军徐文涛张松林
Owner ANTON OILFIELD SERVICES (GRP) LTD
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