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Gas storage reservoir salt cavern vertical segmented cavity dissolving method

A gas storage and salt cavern technology, which is applied to earth drilling, mining equipment, mining equipment, etc., can solve the problems of time-consuming, etc., and achieve the effects of reducing the construction period, improving efficiency, and increasing the cavity-building speed

Active Publication Date: 2016-01-20
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The invention provides a method for vertical segmental dissolution of gas storage salt caverns to solve the technical problem of time-consuming existing in the cavity-building process in the prior art

Method used

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  • Gas storage reservoir salt cavern vertical segmented cavity dissolving method
  • Gas storage reservoir salt cavern vertical segmented cavity dissolving method

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Embodiment Construction

[0036] The invention provides a method for vertically segmented cavity dissolution of a salt cavern of a gas storage to solve the technical problem of too long time-consuming existing in the cavity-building process in the prior art.

[0037] The technical solution in the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0038] Provided is a gas storage salt cavern vertically segmented cavity dissolution method, comprising: designing an upper cavity and a lower cavity for the gas storage salt cavern, the upper cavity and the lower cavity are vertically distributed; The upper cavity and the lower cavity are subjected to cavity dissolution treatment at the same time; after the cavity dissolution treatment of the upper cavity is completed, the lower cavity is controlled to dock with the upper cavity to form the gas storage Library salt cave. That is to say, the salt cavern of the gas storage can be divi...

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Abstract

The invention relates to the field of petroleum engineering, and discloses a gas storage reservoir salt cavern vertical segmented cavity dissolving method. The method aims at solving the technical problem of too long time consumption of a cavern manufacturing process in the prior art, and comprises the following steps of designing an upper cavity and a lower cavity by aiming at a gas storage reservoir salt cavern, wherein the upper cavity and the lower cavity are in vertical distribution; simultaneously performing cavity dissolving treatment on the upper cavity and the lower cavity; and after the cavity dissolving treatment on the upper cavity is completed, controlling the lower cavity to realize the butt joint with the upper cavity for forming the gas storage reservoir salt cavern. The technical effect of accelerating the speed of the cavity manufacturing process is achieved.

Description

technical field [0001] The invention relates to the field of petroleum engineering, in particular to a method for vertically segmented dissolution of a salt cavern of a gas storage. Background technique [0002] With the rapid development of economy and society, the national energy strategic reserve is becoming more and more urgent. Due to its good sealing, high safety and stability, underground salt cavern gas storage is recognized as an ideal place for oil and gas storage and has attracted more attention. [0003] The cavity-making process in the prior art includes the following steps: [0004] 1. After the cavity-making well is drilled, it enters into the cavity-making process; [0005] 2. Using the three-pipe cavity construction process, the water injection string is lowered into the production casing of the cavity well, and water injection and salt production are carried out according to the design requirements; [0006] 3. In the cavity-making process, a solvent-repe...

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Application Information

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IPC IPC(8): E21F17/16
CPCE21F17/16
Inventor 杨海军徐宝财
Owner PETROCHINA CO LTD
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