Design method of double-curtain system used for preventing leakage of oil and gas storage cavern

A design method and double-screen technology, applied in the field of underground engineering, can solve the problems of unsatisfactory application efficiency and effect, and achieve the effect of ensuring sealing, good sealing effect and reducing pollution

CN105966797AActive Publication Date: 2016-09-28TSINGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-09-28

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Abstract

The invention discloses a design method of a double-curtain system used for preventing leakage of an oil and gas storage cavern. The design method comprises the following steps that first, detailed geological investigation data in a storage cavern area are obtained; second, a water curtain roadway is arranged above the storage carven; third, a plurality of water curtain holes are formed in the side wall of the water curtain roadway and comprise the horizontal water curtain holes or / and the vertical water curtain holes, the horizontal water curtain holes extend to the upper portion of the storage cavern from the water curtain roadway, and the vertical water curtain holes extend to the outer side of the storage cavern from the water curtain roadway; and fourth, the permeable rate of rock layers on the periphery of the storage cavern can be obtained by conducting packer tests through the water curtain holes, when the permeable rate of any area of the rock layers is larger than a preset permeable rate, a plurality of grouting holes extending between the water curtain holes and the storage cavern are formed in the peripheral wall of the water curtain roadway near the corresponding area to conduct grouting, and a seepage prevention curtain is formed. According to the design method, cracks in surrounding rock can be effectively closed, and oil and gas stored in the storage cavern are prevented from being leaked.
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Description

technical field

[0001] The invention relates to the technical field of underground engineering, in particular to a design method of a double-curtain system for preventing leakage of an oil and gas storage depot. Background technique

[0002] Energy is the basic element for the existence and development of modern society, among which fuel oil and gas are not only important components of energy, but also important sources of chemical raw materials. Therefore, for the major industrial countries in the world, being able to maintain sufficient and stable sources of oil and gas is a major issue related to their social development and stability within decades.

[0003] As a large industrial country with a GDP second only to the United States, our country's oil production is also huge, but it still cannot meet the needs of production and life. Especially in the context of world turmoil and frequent major crises, oil and gas strategic storage is one of the necessary measures to ensu...

Examples

Embodiment Construction

[0029] The present invention provides a design method for a double-screen system for preventing oil and gas storage from leaking. The present invention will be further described in detail in conjunction with the accompanying drawings and specific implementation methods.

[0030] Such as Figure 1-3 As shown, the design method of the double-curtain system used to prevent storage 1 from leaking provided by the present invention not only includes the design of the water curtain tunnel 2 of the storage reservoir 1, but also includes setting the water curtain hole 3 at the water curtain tunnel 2. , and set the grouting hole 4. According to the present invention, the design method of the double-screen system for preventing the leakage of the reservoir 1 mainly includes the following steps:

[0031] Step 1, obtaining detailed geological survey data of the reservoir area;

[0032] Step 2, setting the water curtain roadway 2 on the oblique upper side of the storage tank 1;

[0033] ...