CN107035343A - A kind of rock salt cavern method of construction and its application based on to the well exploitation old well of formula - Google Patents
A kind of rock salt cavern method of construction and its application based on to the well exploitation old well of formula Download PDFInfo
- Publication number
- CN107035343A CN107035343A CN201710159251.8A CN201710159251A CN107035343A CN 107035343 A CN107035343 A CN 107035343A CN 201710159251 A CN201710159251 A CN 201710159251A CN 107035343 A CN107035343 A CN 107035343A
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- well
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- rock salt
- central tube
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/28—Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
Abstract
The present invention relates to a kind of based on rock salt cavern method of construction and its application that the old well of formula is exploited to well, belong to salt well accident technical field.The rock salt cavern method of construction, comprises the following steps：(1) detection is checked, detection inspection is carried out to the old well of formula of being exploited to well；(2) drilling well, is drilled with a drilling well between two old wells, and the drilling well extends Salt layer；(3) down tube, divides into sleeve and a central tube in the drilling well, and described sleeve pipe is sheathed on outside the central tube；(4) oiling, the oiling between described sleeve pipe and central tube；(5) fresh water is injected from the central tube, the fresh water reaches both sides Lao Jing by old well horizontal segment, and dissolves rock salt and be changed into bittern, the bittern is discharged from the old well in both sides；(6) when the molten chamber reaches set volume, stop injection fresh water, build and complete.This based on to well exploit the old well of formula rock salt cavern method of construction realize horizontal segment solution gambling, adopt salt, oil storage gas storage integration objective, suitable for wide popularization and application.
Description
Technical field
The present invention relates to a kind of based on rock salt cavern method of construction and its application that the old well of formula is exploited to well, belong to salt mine and open
Adopt technical field.
Background technology
The exploitation of salt resource has very important status in the economic activity of country, and the development scheme of salt is broadly divided into
Three kinds：Deep mining, solution mining and solar evaporation.Deep mining is that vertical shaft first is led into mine bottom, then by drilling well,
The modes such as cutting, explosion build up the compartment of checkerboard distribution between vertical shaft, after finally mined bulk salt mine is crushed
Ground is transported to by conveyer belt；Solution mining is first to dissolve salt toward water filling in well, then salting liquid pumped transports to processing factory and enter
Row dewater treatment；Solar evaporation is that the salt in seawater and salina is extracted by way of Exposure to Sunlight；Above-mentioned three kinds of the way of exploitation are each
Have advantage and disadvantage, wherein, most, state-of-the-art mining type is used for well mining type in China, due to the underground rock of China
Layer is bedded salt rock, and thickness of thin, exploitation difficulty is big, and the backwardness of additional winning apparatus and managerial carelessness cause after exploitation
The old well of the substantial amounts of shape of a saddle is formd, the coefficient of mining of salt mine is relatively low, and the secondary development difficulty in later stage is greatly increased, and is caused
The wastes of salt ore resources.
Rock salt has hypotonicity, low-porosity and good rheological behavior, by internationally recognized for the optimal of energy storage
Medium.To solve increasingly serious energy crisis, it is imperative to set up strategic reserves of energy, relatively other energy reserves modes,
The characteristics of rock salt underground energy warehouse has safe, economic, is a most important ring in strategic reserves of energy work.External
Underground rock salt bank is nearly all built in huge thick salt dome, and the rock salt that China can build underground storage is bedded salt rock, its thickness
Thin, grade is low, indissoluble interlayer is more, therefore, and it is higher that China's underground rock salt bank builds difficulty bigger, operation risk, it has also become system
About China develops the stumbling-block of the strategic bank of underground energy.
In China, by the old well of the substantial amounts of shape of a saddle carried over to well mining type, the old well water of these shapes of a saddle is put down
Section is longer, during dissolving more use without lubricating pad exploitation, horizontal segment is difficult to effective dissolving, and size is smaller, or even has blocked (although stifled
Plug, but water can be logical from clinker hole clearance flow), it is impossible to proceed to exploit and the demand of oil storage gas storage can not be met, dissolve simultaneously
The top of two well heads is occurred mainly in, the generation of the accidents such as top plate leakage is easily caused, it is difficult to national energy strategy storage is used as
Storehouse.
The content of the invention
In order to make up the deficiencies in the prior art, built the invention provides a kind of based on the rock salt cavern that the old well of formula is exploited to well
Method and its application are made, to solve problems of the prior art.
The present invention is achieved through the following technical solutions：
A kind of rock salt cavern method of construction based on to the well exploitation old well of formula, the method for construction comprises the following steps：
(1) detection is checked, detection inspection is carried out to the old well of formula of being exploited to well；
(2) drilling well, is drilled with a drilling well between two old wells, and the drilling well extends the level that the old well of formula is exploited to well
Section；
(3) down tube, divides into sleeve and a central tube in the drilling well, and described sleeve pipe is sheathed on outside the central tube；
(4) oiling, the oiling between described sleeve pipe and central tube；
(5) fresh water is injected from the central tube, the fresh water reaches both sides Lao Jing, and dissolving salt by old well horizontal segment
Rock is changed into bittern, and the bittern is discharged from the old well in both sides；
(6) when the molten chamber reaches set volume, stop injection fresh water, build and complete.
Further optimally, the detection inspection method of the step (1)：
First, the well bore integrality to old well is detected with seal, chooses well bore integrality and seal good
Old well is constructed for this method of construction；
Secondly, sonar test is carried out to the old well of above-mentioned selection, obtains its form, layer position and size, and determine its level
Section blocks situation.
Further optimally, the lower end formation Open-Hole Section of described sleeve pipe is stretched out in the lower end of the central tube.
Further optimally, the fluid of the injection is formed between described sleeve pipe and central tube and at the Open-Hole Section
Lubricating pad.
Further optimally, the fluid of the injection is diesel oil.
A kind of application of above-mentioned rock salt cavern method of construction in the construction of underground energy warehouse.
The beneficial effects of the invention are as follows：
The rock salt cavern method of construction effectively can be exploited to be formed by being drilled with a drilling well between two old wells to twin-well
Old well horizontal segment carry out de-plugging increase-volume, will to well exploitation be changed into three wells exploitation.Fresh water specially is passed through from middle drilling well,
The fresh water dissolves rock salt in the horizontal segment first, during the old well in both sides is flowed to from middle drilling well, gradually becomes saturation
Bittern, the bittern of saturation can not be redissolved rock salt, and the final old well from both sides is discharged, therefore rock salt cavern method of construction master
Expansion chamber is carried out to horizontal segment, realize and the old well horizontal segment rock salt to be formed progress effectively solution mining, solution are exploited to twin-well
The problem that traditional old well horizontal segment of having determined is blocked, improves the coefficient of mining of salt mine, saves salt ore resources, increase economic efficiency；
Meanwhile, can rationally it be controlled during molten chamber, the cavity ultimately formed has the advantages that volume is big, form is good.
The molten chamber built by the rock salt cavern method of construction, with larger volume, can be stored up as the national strategy energy
Storehouse, efficiently solve the subterranean strata of China due to bedded salt rock, thickness of thin and can not oil storage gas storage situation, with important
Strategic importance, suitable for wide popularization and application.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
In figure, 1, Lao Jing, 2, drilling well, 3, sleeve pipe, 4, central tube, 5, lubricating pad, 6, fresh water, 7, bittern, 8, Open-Hole Section, 9, most
Initial equilibrium state, 10, molten cavity-like state, 11, end-state.
Embodiment
For that can understand the technical characterstic for illustrating technical solution of the present invention, below by embodiment, and it is attached to combine its
Figure, the present invention will be described in detail.
Embodiment 1
As shown in figure 1, a kind of rock salt cavern method of construction based on to the well exploitation old well of formula is present embodiments provided, it is described
Method of construction comprises the following steps：
(1) detection is checked, detection inspection is carried out to the old well 1 of formula of being exploited to well；
(2) drilling well, is drilled with a drilling well 2 between two old wells, and the drilling well 2 extends the water that the old well of formula is exploited to well
Flat section；
(3) down tube, divides into the central tube 4 of sleeve 3 and one in the drilling well, and described sleeve pipe 3 is sheathed on the central tube 4
Outside；
(4) oiling, the oiling between described sleeve pipe 3 and central tube 4；
(5) the injection fresh water 6 from the central tube 4, the fresh water 6 reaches the old well 1 in both sides by old well horizontal segment, and molten
Solution rock salt is changed into bittern 7, and the bittern 7 is discharged from the old well 1 in both sides；
(6) when the molten chamber reaches set volume, stop injection fresh water 6, build and complete.
The detection inspection method of above-mentioned steps (1)：
First, the well bore integrality to old well 1 is detected with seal, chooses well bore integrality and seal good
Old well 1 is constructed for this method of construction；
Secondly, sonar test is carried out to the old well 1 of above-mentioned selection, obtains its form, layer position and size, and determine its level
Section blocks situation.
The lower end that described sleeve pipe 3 is stretched out in the lower end of the central tube 4 forms Open-Hole Section 8.
The fluid of the injection forms lubricating pad 5 between described sleeve pipe 3 and central tube 4 and at the Open-Hole Section 8.It is described
The fluid of injection is diesel oil.
The present embodiment 1 is during use, and the fresh water 6 enters from drilling well 2, enters old by the outlet of central tube 4
The horizontal segment of well 1, the old well 1 of both sides is entered by horizontal segment, during horizontal segment is flowed through, the fresh water gradually dissolves top
The rock salt of wall, side wall and bottom (particularly roof), when the fresh water is flowed near the old well 1, the fresh water 6 is changed into full
The bittern 7 of sum；It will be seen from figure 1 that the roof of the horizontal segment is changed into molten cavity-like state 10 from original state 9, finally to final
State 11, dissolving position is focused primarily upon on the roof of horizontal segment, can be efficiently solved the problem of horizontal segment is blocked, can be made
The volume maximization of molten chamber, form is intended to dome, prevents the roof of horizontal segment from caving in；Meanwhile, improve opening for salt mine
Rate is adopted, salt ore resources are saved；Finally, the bittern 7 is discharged from the old well 1 of both sides.The design of the lubricating pad 5, is easy to level
Duan Dingbi dissolving.This embodiment achieves horizontal segment de-plugging and adopt the integration objective of salt.
Embodiment 2
Application of the rock salt cavern method of construction in the construction of underground energy warehouse described in embodiment 1.
The molten chamber that rock salt cavern method of construction described in embodiment 1 is made, for oil storage gas storage, is stored up as the strategy of country
It is standby.The application takes full advantage of abandonment and exploits the old well of formula to well in underground, can be by its level by the transformation of the present embodiment 2
The salt mining of section goes out, and increases its molten chamber, makes its volume maximization, its present situation for being unable to oil storage gas storage is solved, for oil storage
Gas storage；The present situation that China scantily descends energy strategy bank for a long time is solved, with very strong practicality, meaning is very
It is great.
From above-described embodiment 1 and embodiment 2 as can be seen that the present invention is a kind of based on the rock salt cavern that the old well of formula is exploited to well
Method of construction realizes the gambling of horizontal segment solution, adopts salt, the integration objective of oil storage gas storage；A kind of rock salt cavern method of construction of the present invention exists
Application in the construction of underground energy warehouse, can maximize its molten cavity volume, can store substantial amounts of oil gas, solve China head
The present situation of energy strategy bank is scantily descended since phase, with very strong practicality.
Part is not described in detail by the present invention, is the known technology of those skilled in the art of the present technique.Finally illustrate, the above is real
Example is applied to be merely illustrative of the technical solution of the present invention and unrestricted, although having been carried out specifically to the present invention with reference to preferred embodiment
It is bright, it will be understood by those within the art that, technical scheme can be modified or equivalent substitution, and
The objective and scope of technical solution of the present invention are not departed from, it all should cover among scope of the presently claimed invention.
Claims (6)
1. it is a kind of based on to well exploit the old well of formula rock salt cavern method of construction, it is characterised in that the method for construction include with
Lower step：
(1) detection is checked, detection inspection is carried out to the old well of formula of being exploited to well；
(2) drilling well, is drilled with a drilling well between two old wells, and the drilling well extends the horizontal segment that the old well of formula is exploited to well；
(3) down tube, divides into sleeve and a central tube in the drilling well, and described sleeve pipe is sheathed on outside the central tube；
(4) oiling, the oiling between described sleeve pipe and central tube；
(5) fresh water is injected from the central tube, the fresh water reaches both sides Lao Jing by the horizontal segment, and dissolves rock salt change
For bittern, the bittern is discharged from the old well in both sides；
(6) when the molten chamber reaches set volume, stop injection fresh water, build and complete.
2. rock salt cavern method of construction according to claim 1, it is characterised in that the detection reviewing party of the step (1)
Method：
First, the well bore integrality to old well is detected with seal, chooses well bore integrality and the good old well of seal
For the construction of this method of construction；
Secondly, sonar test is carried out to the old well of above-mentioned selection, obtains its form, layer position and size, and determine that its horizontal segment is blocked up
Fill in situation.
3. rock salt cavern method of construction according to claim 1, it is characterised in that the lower end of the central tube is stretched out described
The lower end of sleeve pipe forms Open-Hole Section.
4. rock salt cavern method of construction according to claim 3, it is characterised in that the fluid of the injection is in described sleeve pipe
Lubricating pad is formed between central tube and at the Open-Hole Section.
5. rock salt cavern method of construction according to claim 4, it is characterised in that the fluid of the injection is diesel oil.
6. application of the rock salt cavern method of construction in the construction of underground energy warehouse described in the claims.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710159251.8A CN107035343A (en) | 2017-03-17 | 2017-03-17 | A kind of rock salt cavern method of construction and its application based on to the well exploitation old well of formula |
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|---|---|---|---|
| CN201710159251.8A CN107035343A (en) | 2017-03-17 | 2017-03-17 | A kind of rock salt cavern method of construction and its application based on to the well exploitation old well of formula |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590761A (en) * | 2018-04-30 | 2018-09-28 | 西安科技大学 | For by the system and its construction method under energy storage to deep-well |
| CN109630064A (en) * | 2018-11-19 | 2019-04-16 | 湖北双环科技股份有限公司 | A kind of old salt well remodeling method |
| CN109751022A (en) * | 2019-01-29 | 2019-05-14 | 江苏苏盐井神股份有限公司 | A kind of note gas production method of connected well salt hole air reserved storeroom |
| CN109838279A (en) * | 2017-11-24 | 2019-06-04 | 江苏苏盐井神股份有限公司 | A method of salt cave storage cavern utilization rate is improved from bottom of chamber row's halogen using connected well |
| CN110593917A (en) * | 2018-06-12 | 2019-12-20 | 江苏省制盐工业研究所有限公司 | Method for quickly building horizontal type oversized salt cavern storage |
| CN110748380A (en) * | 2018-07-23 | 2020-02-04 | 中国石油天然气股份有限公司 | Method for building salt cavern gas storage |
| CN111749733A (en) * | 2019-03-28 | 2020-10-09 | 中国石油天然气集团有限公司 | Method for rebuilding gas storage warehouse by communicating old cavity |
| CN111852565A (en) * | 2019-04-28 | 2020-10-30 | 中国石油天然气股份有限公司 | Method for discharging brine in accumulated residues at bottom and communication section of salt cavity of old well cavity |
| CN114856524A (en) * | 2022-05-24 | 2022-08-05 | 中国科学院武汉岩土力学研究所 | Salt mine drilling solution mining production-increasing capacity-expanding method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838279A (en) * | 2017-11-24 | 2019-06-04 | 江苏苏盐井神股份有限公司 | A method of salt cave storage cavern utilization rate is improved from bottom of chamber row's halogen using connected well |
| CN109838279B (en) * | 2017-11-24 | 2021-04-13 | 江苏苏盐井神股份有限公司 | Method for improving salt cavern storage utilization rate by discharging brine from cavity bottom through communicating well |
| CN108590761A (en) * | 2018-04-30 | 2018-09-28 | 西安科技大学 | For by the system and its construction method under energy storage to deep-well |
| CN110593917A (en) * | 2018-06-12 | 2019-12-20 | 江苏省制盐工业研究所有限公司 | Method for quickly building horizontal type oversized salt cavern storage |
| CN110593917B (en) * | 2018-06-12 | 2022-02-08 | 江苏省制盐工业研究所有限公司 | Method for quickly building horizontal type oversized salt cavern storage |
| CN110748380A (en) * | 2018-07-23 | 2020-02-04 | 中国石油天然气股份有限公司 | Method for building salt cavern gas storage |
| CN110748380B (en) * | 2018-07-23 | 2021-08-03 | 中国石油天然气股份有限公司 | Method for building salt cavern gas storage |
| CN109630064A (en) * | 2018-11-19 | 2019-04-16 | 湖北双环科技股份有限公司 | A kind of old salt well remodeling method |
| CN109751022A (en) * | 2019-01-29 | 2019-05-14 | 江苏苏盐井神股份有限公司 | A kind of note gas production method of connected well salt hole air reserved storeroom |
| CN111749733A (en) * | 2019-03-28 | 2020-10-09 | 中国石油天然气集团有限公司 | Method for rebuilding gas storage warehouse by communicating old cavity |
| CN111852565A (en) * | 2019-04-28 | 2020-10-30 | 中国石油天然气股份有限公司 | Method for discharging brine in accumulated residues at bottom and communication section of salt cavity of old well cavity |
| CN114856524A (en) * | 2022-05-24 | 2022-08-05 | 中国科学院武汉岩土力学研究所 | Salt mine drilling solution mining production-increasing capacity-expanding method |
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