CN102587982A - Method for constructing underground salt cavern gas storage groups - Google Patents
Method for constructing underground salt cavern gas storage groups Download PDFInfo
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- CN102587982A CN102587982A CN 201210062769 CN201210062769A CN102587982A CN 102587982 A CN102587982 A CN 102587982A CN 201210062769 CN201210062769 CN 201210062769 CN 201210062769 A CN201210062769 A CN 201210062769A CN 102587982 A CN102587982 A CN 102587982A
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Abstract
The invention belongs to the field of development of oil and gas resources, and particularly relates to a method for constructing underground salt cavern gas storage groups. The method for constructing the underground salt cavern gas storage groups includes following steps: (1), determining design values of the widths of ore pillars according to the shapes and the sizes of two adjacent underground salt cavern gas storages; (2), determining relative positions of the two adjacent gas storages in a salt cavern stratum and relative positions of wellheads; (3) completing well drilling and well cementation by the aid of a drill bit with the selected size and a well cementation tubular column with the proper size and the proper structure; (4), mounting an injection and extraction tubular column system and carrying out solution mining cavity making operation; and (5), monitoring and correcting the shape and the size of a salt cavern when cavity making operation is completed by 1/3 and 2/3 respectively, monitoring the shape and the size of the salt cavern when the cavity making operation is completed by 4/5, and reducing cavity making speed until cavity making operation is finished. The design values of the widths of the ore pillars among the underground salt cavern gas storage groups are determined, and the construction method is provided and has excellent high engineering application value and field operability.
Description
Technical field
The invention belongs to the petroleum resources development field, particularly, relate to a kind of underground salt hole air reserved storeroom crowd's construction method.
Background technology
In salt hole air reserved storeroom crowd process of construction, the width of ore pillar can prevent salt hole air reserved storeroom in making chamber and running, failure damage to take place between the crowd of choose reasonable storehouse, effectively improves the rock salt efficiency of resource.If the ore pillar width stays and establishes too greatly, can cause a large amount of rock salt wastings of resources, influence economic effect; Establish too for a short time and stay, can make ore pillar produce the kick unstable failure, cause the top board extensive damage of salt cave, possibly cause whole salt hole air reserved storeroom crowd to scrap.Ore pillar width design does not provide concrete numerical value of ore pillar width and construction way thereof mainly with reference to engineering experience between underground salt hole air reserved storeroom crowd of present stage, and it is bigger to cause making in the process of chamber randomness in actual design and molten drench.The designer significantly improves the ore pillar design width and causes the rock salt waste often in order to guarantee safety.The present invention provides concrete numerical value of ore pillar size and construction way, improves the operability of ore pillar design, optimizes the rock salt level of resources utilization, has the excellent engineering using value to guaranteeing China's salt hole air reserved storeroom construction safety.
Summary of the invention
The object of the present invention is to provide a kind of underground salt hole air reserved storeroom crowd's construction method, solve a difficult problem that exists in design of ore pillar between underground salt hole air reserved storeroom crowd and the construction.
Technical scheme of the present invention is following:
A kind of underground salt hole air reserved storeroom crowd's construction method comprises and builds a plurality of underground salt hole air reserved storerooms, and the stage of construction that is adjacent to down salt hole air reserved storeroom is following:
(1), the volume that calculates two salt hole air reserved storerooms respectively according to the design shape and the size of adjacent two underground salt hole air reserved storerooms; With each salt hole air reserved storeroom equivalence is the identical equivalent circular cylinder of a volumes, and equivalent circular height of column and diameter ratio are 2: 1, calculates the height and the diameter of each equivalent circular cylinder respectively; Ore pillar width design load is the diameter of volume the greater in 1.8～2.2 times of adjacent two equivalent circular cylinders between adjacent two underground salt hole air reserved storerooms;
(2), according to ore pillar width design load, target salt rock stratum, salt cave buried depth, salt cave size and dimension between salt hole air reserved storeroom, accurately confirm relative position, the well head relative position of adjacent two gas storages in the rock salt stratum; Annotate the gas production parameter according to underground salt hole air reserved storeroom design, confirm underground salt hole air reserved storeroom natural gas notes air collecting pipe column dimension, completion tubular column size and structure, borehole size, bit size;
(3), the drill bit drilling well that utilizes selected size is to underground salt hole air reserved storeroom bottom; According to selected completion tubular column size and structure, to underground salt hole air reserved storeroom tip position to the face of land well section cement the well, wait to coagulate;
(4), dissolve drench and make the chamber until the construction completion of salt cave;
Preferably; Make the chamber in molten drench respectively and accomplish 1/3 and at 2/3 o'clock; Adopt sonar to survey the chamber technology salt cave size and dimension monitored, when deviation appears in salt cave shape and design load through carrying pipe, changing and dissolve drench and make the chamber mode or add top structure and protect and oily cavity geometry and size are proofreaied and correct; Accomplished 4/5 o'clock making the chamber, adopt sonar to survey the chamber technology salt cave size and dimension is monitored, reduce and make chamber speed and finish, the salt hole air reserved storeroom shape and size are revised to satisfy design load until making the chamber.
Preferably, top structure protection oil is diesel oil or kerosene or heavy straight-run naphtha.
Preferably, to make the mode in chamber be direct circulation mode or anti-endless form in molten drench.
Preferably, underground salt hole air reserved storeroom height is greater than its diameter, and ratio between two is greater than 1.7.
The ore pillar width is a beeline between adjacent two underground salt hole air reserved storerooms.
The underground salt hole air reserved storeroom crowd that said method is built comprises a plurality of underground salt hole air reserved storerooms, and the ore pillar width is the diameter of volume the greater in 1.8～2.2 times of adjacent two equivalent circular cylinders between adjacent two underground salt hole air reserved storerooms; Each equivalent circular cylinder and salt hole air reserved storeroom equal-volume correspondingly, equivalent circular height of column and diameter ratio are 2: 1.
Emphasis of the present invention has considered that a lot of parameter-definitions are indeterminate in design of salt hole air reserved storeroom ore pillar and the work progress, can not accurately construct, and often for the safety that improves ore pillar blindly increases the ore pillar width, has wasted the rock salt resource; Ore pillar width design size that the present invention is clear and definite between underground salt hole air reserved storeroom crowd has also provided the construction operation method; The present invention has very strong engineering applied value and on-the-spot operability.
Description of drawings
Fig. 1 is adjacent two the salt hole air reserved storeroom structural representations of underground salt hole air reserved storeroom faciation;
Among the figure: 1, the underground salt hole air reserved storeroom of A, 2, the underground salt hole air reserved storeroom of B, 3, A equivalent circular cylinder, 4, B equivalent circular cylinder, 5, ground, 6, the rock salt stratum.
The specific embodiment
Underground salt hole air reserved storeroom crowd comprises a plurality of underground salt hole air reserved storerooms, is the construction method that example is explanatorily descended the salt hole air reserved storeroom crowd with adjacent two underground salt hole air reserved storerooms, and is as shown in Figure 1.
Adjacent two underground salt hole air reserved storerooms in the design are the underground salt hole air reserved storeroom of called after: A 1, the underground salt hole air reserved storeroom 2 of B respectively; The underground salt hole air reserved storeroom of A, the underground salt hole air reserved storeroom of B all are designed to the ellipsoid shape; The height of the underground salt hole air reserved storeroom of A and maximum gauge are respectively 112m and 64m, and ratio between two is 1.75, and design volume is 76.3 * 10
4m
3, estimate that making the chamber deadline is 1245 days; The height of the underground salt hole air reserved storeroom of B and maximum gauge are respectively 128m and 70m, and ratio between two is 1.83, design volume difference 82.5 * 10
4m
3, estimate that making the chamber deadline is 1350 days.The 6 upper and lower bottom surfaces, rock salt stratum, place, salt cave of underground salt hole air reserved storeroom of A and the underground salt hole air reserved storeroom of B are respectively 975m and 1156m apart from the distance on ground 5, and top, salt cave salt depth of stratum is 20m.
The work progress of adjacent two gas storages of underground salt hole air reserved storeroom crowd is following:
(1), can know according to the actual design data: the underground salt hole air reserved storeroom volume of A is 76.3 * 10
4m
3, the underground salt hole air reserved storeroom volume of B is 82.5 * 10
4m
3With the underground salt hole air reserved storeroom equivalence of A is the identical A equivalent circular cylinder 3 of volume, and A equivalent circular height of column is 2 times of equivalent circular cylinder diameters, calculates: A equivalent circular cylinder diameter and highly being respectively: 49.5m and 99m; Likewise, be the identical B equivalent circular cylinder 4 of volume with the underground salt hole air reserved storeroom equivalence of B, B equivalent circular height of column is 2 times of equivalent circular cylinder diameters, calculates: B equivalent circular cylinder diameter and highly being respectively: 50.8m and 101.6m;
(2), the ore pillar width between the underground salt hole air reserved storeroom of adjacent A, the underground salt hole air reserved storeroom of B is taken as 1.8～2.2 times of the greater in two body diameters, can obtain then that the ore pillar width is 91.44m～111.76m between A, B salt hole air reserved storeroom; Relatively conservative design ore pillar design width is taken as 112m, can know that minimum range is 112m between A, B salt hole air reserved storeroom, and the well head distance is A, B salt cave maximum radius and ore pillar width sum, is 179m;
(3), A, top, the underground salt hole air reserved storeroom purpose of design of B layer position buried depth be 975m, it is 20m that depth of stratum is reserved at top, salt cave; A, B salt hole air reserved storeroom height are respectively 112m and 128m, can calculate A, top, B salt cave vertical depth is 995m, and the bottom vertical depth is 1107m and 1123m respectively, all less than the maximum buried depth 1156m in salt rock stratum, satisfy salt hole air reserved storeroom and build the storehouse requirement;
(4), salt hole air reserved storeroom is annotated the gas production designing requirement under the base area; Natural gas injection-production column jacket external diameter is that 177.8mm, wall thickness 9.19mm, grade of steel are P110; The well cementation conduit external diameter that salt hole air reserved storeroom adopts is 508mm, wall thickness 11.13mm, grade of steel J55; Protective casing 339.7mm, wall thickness 9.65mm, grade of steel N80, well cementation casing string external diameter is 244.5mm, wall thickness 10.03mm, grade of steel N80, selects for use bit diameter to be followed successively by: 660mm, 444.5mm and 314.1mm;
(5), adopt the drilling well of above-mentioned size drill bit to projected depth, successively be lowered to well cementation conduit, protective casing, well cementation sleeve pipe and carry out completion, wait and coagulate, accomplish completion and well cementation;
(6), the injection-production column jacket system is installed, the chamber is made in molten drench; In salt cave A, B, injecting top structure protection oil through injection-production column jacket controls salt cave top dissolution velocity and shape;
(7), after salt cave A carries out 415 days (1/3 duration); Adopt sonar to survey the chamber technology and for the first time salt cave A shape and size are monitored, can be when deviation appears in salt cave shape and design load through carrying pipe, changing and dissolve drench and make the chamber mode or add top structure and protect and oily cavity geometry is proofreaied and correct; After salt cave B carries out 450 days (1/3 duration); Adopt sonar to survey the chamber technology and for the first time salt cave B shape and size are monitored, can be when deviation appears in salt cave shape and design load through carrying pipe, changing and dissolve drench and make the chamber mode or add top structure and protect and oily cavity geometry is proofreaied and correct; After salt cave A carries out 830 days (2/3 duration); Adopt sonar to survey the chamber technology and for the second time salt cave A shape and size are monitored, can be when deviation appears in salt cave shape and design load through carrying pipe, changing and dissolve drench and make the chamber mode or add top structure and protect and oily cavity geometry is proofreaied and correct; After salt cave B carries out 900 days (2/3 duration); Adopt sonar to survey the chamber technology and for the second time salt cave B shape and size are monitored, can be when deviation appears in salt cave shape and design load through carrying pipe, changing and dissolve drench and make the chamber mode or add top structure and protect and oily cavity geometry is proofreaied and correct;
(8), after salt cave A carries out 996 days (4/5 duration); Adopt sonar to survey the chamber technology and for the third time salt cave A shape and size are monitored, can be when deviation appears in salt cave shape and design load through carrying pipe, changing and dissolve drench and make the chamber mode or add top structure and protect and oily cavity geometry is proofreaied and correct; After salt cave B carries out 1080 days (4/5 duration); Adopt sonar to survey the chamber technology and for the third time salt cave B shape and size are monitored, can be when deviation appears in salt cave shape and design load through carrying pipe, changing and dissolve drench and make the chamber mode or add top structure and protect and oily cavity geometry is proofreaied and correct; Reduce that to make chamber speed be original 1/2 to finish until making the chamber.
Dissolving drench in the present embodiment, to make the chamber mode be direct circulation mode or anti-endless form; Top structure protection oil is diesel oil or kerosene or heavy straight-run naphtha.
By that analogy, carry out the construction of other underground salt hole air reserved storeroom, accomplish and entirely descend salt hole air reserved storeroom crowd's construction.
Claims (6)
1. a underground salt hole air reserved storeroom crowd construction method comprises and builds a plurality of underground salt hole air reserved storerooms, and the stage of construction that is adjacent to down salt hole air reserved storeroom is following:
(1), the volume that calculates two salt hole air reserved storerooms respectively according to the design shape and the size of adjacent two underground salt hole air reserved storerooms; With each salt hole air reserved storeroom equivalence is the identical equivalent circular cylinder of a volumes, and equivalent circular height of column and diameter ratio are 2: 1, calculates the height and the diameter of each equivalent circular cylinder respectively; Ore pillar width design load is the diameter of volume the greater in 1.8～2.2 times of adjacent two equivalent circular cylinders between adjacent two underground salt hole air reserved storerooms;
(2), according to ore pillar width design load, target salt rock stratum, salt cave buried depth, salt cave size and dimension between salt hole air reserved storeroom, accurately confirm relative position, the well head relative position of adjacent two gas storages in the rock salt stratum; Annotate the gas production parameter according to underground salt hole air reserved storeroom design, confirm underground salt hole air reserved storeroom natural gas notes air collecting pipe column dimension, completion tubular column size and structure, borehole size, bit size;
(3), the drill bit drilling well that utilizes selected size is to underground salt hole air reserved storeroom bottom; According to selected completion tubular column size and structure, to underground salt hole air reserved storeroom tip position to the face of land well section cement the well, wait to coagulate;
(4), dissolve drench and make the chamber until the construction completion of salt cave.
2. a kind of underground salt hole air reserved storeroom crowd's according to claim 1 construction method; It is characterized in that: make the chamber in molten drench respectively and accomplish 1/3 and at 2/3 o'clock; Adopt sonar to survey the chamber technology salt cave size and dimension monitored, when deviation appears in salt cave shape and design load through carrying pipe, changing and dissolve drench and make the chamber mode or add top structure and protect and oily cavity geometry and size are proofreaied and correct; Accomplished 4/5 o'clock making the chamber, adopt sonar to survey the chamber technology salt cave size and dimension is monitored, reduce and make chamber speed and finish, the salt hole air reserved storeroom shape and size are revised to satisfy design load until making the chamber.
3. a kind of underground salt hole air reserved storeroom crowd's according to claim 1 construction method is characterized in that: top structure protection oil is diesel oil, kerosene or heavy straight-run naphtha.
4. according to the described a kind of underground salt hole air reserved storeroom crowd's of claim 1-2 construction method, it is characterized in that: the mode that the chamber is made in molten drench is direct circulation mode or anti-endless form.
5. according to the described a kind of underground salt hole air reserved storeroom crowd's of claim 1-3 construction method, it is characterized in that: underground salt hole air reserved storeroom height is greater than its diameter, and ratio between two is greater than 1.7.
6. the underground salt hole air reserved storeroom crowd who builds according to the described construction method of claim 1-5; Comprise a plurality of underground salt hole air reserved storerooms, it is characterized in that: the ore pillar width is the diameter of volume the greater in 1.8～2.2 times of adjacent two equivalent circular cylinders between adjacent two underground salt hole air reserved storerooms; Each equivalent circular cylinder and corresponding salt hole air reserved storeroom equal-volume, equivalent circular height of column and diameter ratio are 2: 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210062769 CN102587982B (en) | 2012-03-12 | 2012-03-12 | Underground salt cavern gas storage groups and method for constructing same |
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| CN 201210062769 CN102587982B (en) | 2012-03-12 | 2012-03-12 | Underground salt cavern gas storage groups and method for constructing same |
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| CN102587982A true CN102587982A (en) | 2012-07-18 |
| CN102587982B CN102587982B (en) | 2013-01-23 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587981A (en) * | 2012-03-12 | 2012-07-18 | 中国石油大学(华东) | Underground salt cavern gas storage and building method thereof |
| CN102828778A (en) * | 2012-09-24 | 2012-12-19 | 重庆大学 | Complex salt rock underground and water dissolution joint cavity construction method |
| CN106246223A (en) * | 2016-10-17 | 2016-12-21 | 中国石油天然气股份有限公司勘探开发研究院廊坊分院 | A kind of for making chamber control method containing heavy parting salt deposit |
| CN106523029A (en) * | 2016-10-26 | 2017-03-22 | 重庆大学 | Transformation method for irregular salt cavern |
| CN108561183A (en) * | 2018-04-09 | 2018-09-21 | 重庆大学 | Self-advancing type rotating jet horizontal well makes cavity method |
| CN110344810A (en) * | 2019-07-18 | 2019-10-18 | 中国科学院武汉岩土力学研究所 | A kind of method for building up of Salt layer gas storage horizontal cavity |
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| DE10117617A1 (en) * | 2001-04-07 | 2002-10-10 | Ruhrgas Ag | System for storing fluid in underground hollow chamber comprises storage chamber for displacement fluid formed as underground hollow chamber |
| CN1676880A (en) * | 2005-04-20 | 2005-10-05 | 太原理工大学 | Rock salt deposit horizontal chamber type oil-gas depot and its building method |
| US7097386B2 (en) * | 2003-11-13 | 2006-08-29 | Freeport-Mcmoran Energy Llc | Simultaneous development of underground caverns and deposition of materials |
-
2012
- 2012-03-12 CN CN 201210062769 patent/CN102587982B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5431482A (en) * | 1993-10-13 | 1995-07-11 | Sandia Corporation | Horizontal natural gas storage caverns and methods for producing same |
| DE10117617A1 (en) * | 2001-04-07 | 2002-10-10 | Ruhrgas Ag | System for storing fluid in underground hollow chamber comprises storage chamber for displacement fluid formed as underground hollow chamber |
| US7097386B2 (en) * | 2003-11-13 | 2006-08-29 | Freeport-Mcmoran Energy Llc | Simultaneous development of underground caverns and deposition of materials |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587981A (en) * | 2012-03-12 | 2012-07-18 | 中国石油大学(华东) | Underground salt cavern gas storage and building method thereof |
| CN102828778A (en) * | 2012-09-24 | 2012-12-19 | 重庆大学 | Complex salt rock underground and water dissolution joint cavity construction method |
| CN106246223A (en) * | 2016-10-17 | 2016-12-21 | 中国石油天然气股份有限公司勘探开发研究院廊坊分院 | A kind of for making chamber control method containing heavy parting salt deposit |
| CN106523029A (en) * | 2016-10-26 | 2017-03-22 | 重庆大学 | Transformation method for irregular salt cavern |
| CN108561183A (en) * | 2018-04-09 | 2018-09-21 | 重庆大学 | Self-advancing type rotating jet horizontal well makes cavity method |
| CN110344810A (en) * | 2019-07-18 | 2019-10-18 | 中国科学院武汉岩土力学研究所 | A kind of method for building up of Salt layer gas storage horizontal cavity |
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| CN102587982B (en) | 2013-01-23 |
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