CN211715095U - Ceramic rupture disc device for temporary well plugging of well completion pipe string - Google Patents
Ceramic rupture disc device for temporary well plugging of well completion pipe string Download PDFInfo
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- CN211715095U CN211715095U CN201922410679.2U CN201922410679U CN211715095U CN 211715095 U CN211715095 U CN 211715095U CN 201922410679 U CN201922410679 U CN 201922410679U CN 211715095 U CN211715095 U CN 211715095U
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Abstract
The utility model discloses a pottery rupture disc device for interim shut-in of well completion tubular column, including last pottery rupture disc, lower pottery rupture disc and equipment ligand, last pottery rupture disc and lower pottery rupture disc interconnect make up into one and have hollow seal pottery rupture disc body in, pottery rupture disc body set firmly in the group assembly body, separate into upper and lower two working channel with the equipment ligand. The utility model discloses a with the middle part of ceramic rupture disk body setting at high temperature high pressure oil and gas field development well completion production tubular column, can keep apart the stratum during the operation of upper well section production tubular column, realize interim shut-in protective screen, prevent that high density completion fluid from leaking to the stratum, the effect of protection reservoir.
Description
Technical Field
The utility model relates to a rupture disc especially relates to a ceramic rupture disc device that is used for interim shut-in of well completion tubular column.
Background
Most of development well reservoirs of offshore high-temperature and high-pressure gas fields are low-permeability reservoirs, and development is carried out by utilizing horizontal wells. The high-temperature high-pressure horizontal well completion pipe column is generally divided into a lower sand prevention completion pipe column, a middle temporary well plugging completion pipe column and an upper production completion pipe column. A sand control pipe column at the lower part of the high-temperature high-pressure horizontal well is generally put into a sieve pipe or a perforated pipe to support a well wall; the middle temporary well plugging completion pipe column can be injected with low-density completion fluid; the upper production pipe column can be put into the completion fluid to realize corrosion protection of the annular casing, and the production channel can be directly pressurized and opened after the upper production pipe column is put into the completion fluid to realize liquid drainage production.
High-temperature high-pressure horizontal well completion is all carried out in high density completion fluid, for preventing that high density completion fluid from leaking to the stratum, the protection reservoir stratum, the stratum needs temporarily to be kept apart to the completion tubular column of temporarily shutting in middle part, at present mostly uses hydraulic formation isolating valve, realizes the switch of valve through the well head pressurization, but the reliability is lower, often because in high density completion fluid, hydraulic formation isolating valve blocks up the valve easily for the isolating valve is opened the difficulty.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pottery rupture disc device for interim shut-in of well completion tubular column, through the middle part of breaking the disk body setting with pottery and developing well completion production tubular column in high temperature high pressure oil and gas field, can keep apart the stratum during the operation of upper well section production tubular column, realize interim shut-in protective screen, prevent that high density completion fluid from leaking out to the stratum, the effect of protection reservoir.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a ceramic rupture disc device for interim shut-in of well completion tubular column, includes ceramic rupture disc, lower ceramic rupture disc and equipment ligand, last ceramic rupture disc and lower ceramic rupture disc interconnect make up into one and have hollow inclosed ceramic rupture disc body in, ceramic rupture disc body set firmly in the group assembly body, separate into upper and lower two working channel with the equipment ligand.
Go up ceramic rupture disc and lower ceramic rupture disc, both's one end all is equipped with the opening, the other end all is equipped with and is hemispherical blind end.
The assembly ligand inward space is provided with a protruding annular table, and the ceramic rupture disc and the lower ceramic rupture disc are fixedly arranged at the upper side and the lower side of the annular table respectively through the opening ends.
The inner wall contact positions of the upper ceramic rupture disc and the lower ceramic rupture disc with the assembly ligand are respectively provided with an upper sealing groove and a lower sealing groove, and the upper sealing groove and the lower sealing groove are respectively provided with an upper sealing ring and a lower sealing ring.
The upper end and the lower end of the assembly ligand are respectively provided with a short section, and the short section is provided with a buckle type consistent with an oil pipe used on site and is mutually buckled for use.
The assembly ligand is made of L80-13Cr steel.
The thicknesses of the upper ceramic rupture disc and the lower ceramic rupture disc are set according to the upper and lower pressure difference of the well completion pipe string.
The ceramic rupture disc body can be opened by an opening tool, the opening tool is in a straight rod body, and one end of the straight rod body is provided with a pointed head.
The heat treatment hardness of the opening tool is more than HRC 55.
Compared with the prior art, the beneficial effects of the utility model are that:
1. has high reliability and high pressure bearing capacity.
2. Through the middle part of the ceramic rupture disc body arranged on the well completion production string of the development well of the high-temperature and high-pressure oil and gas field, the stratum can be isolated during the operation of the production string of the upper well section, a temporary well plugging barrier is realized, high-density completion fluid is prevented from leaking to the stratum, and the function of the reservoir is protected.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
fig. 2 is a schematic view of an opening tool of the ceramic rupture disc of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a ceramic rupture disc device for temporary well shut-in of a completion string comprises an upper ceramic rupture disc 1, a lower ceramic rupture disc 5 and an assembly ligand 2, wherein the upper ceramic rupture disc 1 and the lower ceramic rupture disc 5 are connected with each other to form a closed ceramic rupture disc body with a hollow inside, the ceramic rupture disc body is fixedly arranged in the assembly ligand 2 to divide the assembly ligand 2 into an upper working channel and a lower working channel, so that a temporary well shut-in barrier is realized, high-density completion fluid is prevented from leaking to the stratum during the operation of a production string of an upper well section, and the function of a reservoir is protected.
Go up ceramic rupture disc 1 and lower ceramic rupture disc 5, both's one end all is equipped with the opening, the other end all is equipped with and is hemispherical blind end.
The assembly ligand 2 is provided with a protruding annular table in the inward space, and the ceramic rupture disc 1 and the lower ceramic rupture disc 5 are fixedly arranged at the upper side and the lower side of the annular table respectively through the opening ends.
Go up ceramic rupture disc 1 and lower ceramic rupture disc 5 and assembly ligand 2's inner wall contact position be equipped with seal groove and lower seal groove respectively, last seal groove and lower seal groove in be provided with sealing washer 3 and lower sealing washer 4 respectively, fluid between the upper and lower can effectively be sealed off to upper sealing washer 3 and lower sealing washer 4, prevents the pressure blowby.
The upper end and the lower end of the assembly ligand 2 are respectively provided with a short section, and the short sections are provided with buckling types consistent with oil pipes used on site and are buckled with each other for use.
The assembly ligand 2 is made of L80-13Cr steel and above, and has the same material as an oil pipe used by a high-temperature high-pressure development well.
The thicknesses of the upper ceramic rupture disc 1 and the lower ceramic rupture disc 5 are set according to the upper and lower pressure difference of the completion string.
An opening tool 6 (shown in fig. 2) for opening the ceramic rupture disc is in the shape of a straight rod, one end of which is provided with a tip.
The heat treatment hardness of the opening tool 6 for opening the ceramic rupture disc body is more than HRC 55.
The working principle is as follows:
before the ceramic rupture disc device works, an upper ceramic rupture disc 1 and a lower ceramic rupture disc 5 are installed in an assembly ligand 2, short sections are installed at the upper end and the lower end of the assembly ligand 2 respectively, the short sections are used after being buckled with each other through buckling types which are arranged on the short sections and are consistent with oil pipes used on site, then the assembled ceramic rupture disc body is subjected to pressure test, the pressure test needs to reach a required pressure value, then the ceramic rupture disc body is put into a well along with a middle completion pipe column, and the drift diameter of the pipe column needs to be ensured to be free from scale and any other debris in the process of putting the well so as to prevent the pipe column debris from accumulating on the top of the upper ceramic rupture disc 1 and influencing an opening tool 6 of the ceramic rupture disc body to break the upper ceramic rupture disc 1; during operation, the upper sub may be filled with a high viscosity fluid compatible with the completion or drilling fluid used in the field, which fluid cannot be solid phase, prone to caking, settling, or any form of partial/complete solidification; meanwhile, the opening tool 6 of the ceramic rupture disc body is lowered into the well along with the pipe column, after the ceramic rupture body is lowered into the well, the short section at the end of the upper ceramic rupture disc 1 must be slowly filled with the completion fluid, after the ceramic rupture body is lowered into place along with the middle completion pipe column and the upper completion pipe column, the ceramic rupture disc body can be mechanically opened by utilizing the opening tool 6 which is provided with a sharp head and used for opening the ceramic rupture disc body next time by using a steel wire or a continuous oil pipe, and the upper working channel and the lower working channel of the assembly body 2 are mutually communicated.
The ceramic rupture disk body is prevented from being damaged by screwing or applying torque to the mounting part of the ceramic rupture disk body through a tool.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. A ceramic rupture disc device for temporary shut-in of a completion string, characterized in that: including last ceramic rupture disc (1), lower ceramic rupture disc (5) and assembly ligand (2), last ceramic rupture disc (1) and lower ceramic rupture disc (5) interconnect make up into one and have hollow inclosed ceramic rupture disc body in, ceramic rupture disc body set firmly in assembly ligand (2), separate into two upper and lower working channel with assembly ligand (2).
2. The ceramic rupture disc apparatus of claim 1, wherein: go up ceramic rupture disc (1) and lower ceramic rupture disc (5), both's one end all is equipped with the opening, the other end all is equipped with and is hemispherical blind end.
3. The ceramic rupture disc apparatus of claim 1, wherein: the assembly ligand (2) is provided with a protruding annular table in the inward space, and the upper ceramic rupture disc (1) and the lower ceramic rupture disc (5) are fixedly arranged at the upper side and the lower side of the annular table respectively through the opening ends.
4. The ceramic rupture disc apparatus of claim 1, wherein: go up ceramic rupture disc (1) and lower ceramic rupture disc (5) and assembly ligand's (2) inner wall contact position be equipped with seal groove and lower seal groove respectively, last seal groove and lower seal groove in be provided with sealing washer (3) and lower sealing washer (4) respectively.
5. The ceramic rupture disc apparatus of claim 1, wherein: the upper end and the lower end of the assembly ligand (2) are respectively provided with a short section, and the short section is provided with a buckle type consistent with an oil pipe used on site and is mutually buckled for use.
6. The ceramic rupture disc apparatus of claim 1, wherein: the assembly ligand (2) is made of L80-13Cr steel.
7. The ceramic rupture disc apparatus of claim 1, wherein: the thicknesses of the upper ceramic rupture disc (1) and the lower ceramic rupture disc (5) are set according to the upper-lower pressure difference of the well completion pipe string.
8. The ceramic rupture disc apparatus of claim 1, wherein: the ceramic rupture disc body can be opened by an opening tool (6), the opening tool (6) is in the shape of a straight bar body, and one end of the straight bar body is provided with a pointed end.
9. The ceramic rupture disc apparatus of claim 8, wherein: the heat treatment hardness of the opening tool (6) is more than HRC 55.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922410679.2U CN211715095U (en) | 2019-12-28 | 2019-12-28 | Ceramic rupture disc device for temporary well plugging of well completion pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922410679.2U CN211715095U (en) | 2019-12-28 | 2019-12-28 | Ceramic rupture disc device for temporary well plugging of well completion pipe string |
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| Publication Number | Publication Date |
|---|---|
| CN211715095U true CN211715095U (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922410679.2U Active CN211715095U (en) | 2019-12-28 | 2019-12-28 | Ceramic rupture disc device for temporary well plugging of well completion pipe string |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878948A (en) * | 2021-03-23 | 2021-06-01 | 广汉华圣石油装备有限公司 | Rupture disk |
| WO2022251809A1 (en) * | 2021-05-26 | 2022-12-01 | Baker Hughes Oilfield Operations Llc | Rupture disk, method and system |
-
2019
- 2019-12-28 CN CN201922410679.2U patent/CN211715095U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878948A (en) * | 2021-03-23 | 2021-06-01 | 广汉华圣石油装备有限公司 | Rupture disk |
| WO2022251809A1 (en) * | 2021-05-26 | 2022-12-01 | Baker Hughes Oilfield Operations Llc | Rupture disk, method and system |
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