CN210068133U - Quantitative seal testing tool for sealing cylinder of layered oil production well - Google Patents
Quantitative seal testing tool for sealing cylinder of layered oil production well Download PDFInfo
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- CN210068133U CN210068133U CN201920412320.6U CN201920412320U CN210068133U CN 210068133 U CN210068133 U CN 210068133U CN 201920412320 U CN201920412320 U CN 201920412320U CN 210068133 U CN210068133 U CN 210068133U
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Abstract
The utility model discloses a quantitative seal testing tool for a sealing barrel of a layered production oil well, which comprises an upper joint, an upper pressure gauge short joint, a flow meter short joint, a lower pressure gauge short joint, a pressurizing joint and a shear block pressure-bearing barrel joint which are in threaded sealing connection from top to bottom in sequence; a piston is arranged in the pressing joint and is connected with the pressing joint through a shear pin, and a lower pressure gauge is fixedly connected in the lower pressure gauge nipple; an overflow support body fixedly connected with the flowmeter nipple is arranged in the flowmeter nipple, a flowmeter is fixed in the overflow support body, and an upper pressure gauge is fixedly connected in the upper pressure gauge nipple; and a lower sealing module is fixed on the outer side of the flowmeter nipple, and an upper sealing module is fixed on the outer side of the upper pressure gauge nipple. The utility model discloses an adoption sets up upper portion pressure gauge, lower part pressure gauge and flowmeter in the instrument, can confirm the sealing performance of a sealed section of thick bamboo quantitatively.
Description
Technical Field
The utility model belongs to the technical field of oil field is sealed a section of thick bamboo sealing performance in pit and is detected, especially a sealed instrument of examining of layering exploitation oil well sealed a section of thick bamboo quantification.
Background
At present, the Bohai sea oil field basically adopts an early sand prevention exploitation mode, and the inserting sealing and the positioning sealing play important roles in the existing oil-water well separate exploitation and injection and related measure operation, such as layered oil extraction, layered water injection (polymer injection), layered profile control, one-well multi-purpose technology and the like. The separate layer mining can improve the utilization efficiency of a single well, and the quality of a sealing assembly formed by matching the insertion seal and the sealing cylinder directly determines the quality of the separate layer effect.
The dynamic pipe column operation of the water injection well of the Bohai sea oil field is about 200 wells every year, wherein more than 50 percent of the sand control sealing cylinders fail to work to different degrees. The main current seal checking method is to put the hole inserting seal into the corresponding isolation packer sealing barrel, and by pressing in the pipe, qualitatively judge whether the isolation sealing barrel is damaged or not according to the pressure change of the wellhead. Therefore, the sealing state of the sealing cylinder needs to be quantitatively judged, so that the type of the inserted sealing of the well is selected, the layered water injection effect is ensured, and the method has important social benefits and popularization and application values for development and production of oil fields, yield increase and stable production.
Disclosure of Invention
The utility model discloses a solve the technical problem who exists among the well-known technology and provide a sealed section of thick bamboo quantification of separate layer oil recovery and test a instrument.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a quantitative seal testing tool for a sealing cylinder of a layered production oil well comprises an upper joint, an upper pressure gauge short joint, a flow meter short joint, a lower pressure gauge short joint, a pressurizing joint and a shear block pressure-bearing cylinder joint which are in threaded sealing connection in sequence from top to bottom; a piston is arranged in the pressing joint and is connected with the pressing joint through a shear pin, a pressure relief hole is formed in the pressing joint, and the piston is sealed on the pressure relief hole; a lower pressure gauge pressure transmitting joint is fixedly connected in the lower pressure gauge nipple, and a lower pressure gauge is fixedly connected in the lower pressure gauge pressure transmitting joint; a lower pressure gauge is fixedly connected in the lower pressure gauge nipple; a lower pressure measuring hole and a bridge type channel III which are mutually independent are arranged on the lower pressure gauge short section; an overflowing support body fixedly connected with the flowmeter nipple is arranged in the flowmeter nipple, a flowmeter is fixed in the overflowing support body, a flow measuring hole is formed in the overflowing support body, a pressure transmitting hole communicated with the flow measuring hole is formed in the flowmeter nipple, and a bridge type channel II staggered with the pressure transmitting hole and the flow measuring hole is formed between the overflowing support body and the flowmeter nipple; an upper pressure gauge is fixedly connected in the upper pressure gauge nipple, and an upper pressure measuring hole and a bridge type channel I which are mutually independent are arranged on the upper pressure gauge nipple; the upper joint, the bridge channel I, the bridge channel II, the bridge channel III are communicated with the pressing joint; a lower sealing module is fixed on the outer side of the flow meter short section and is positioned below the pressure transmission hole; and an upper sealing module is fixed on the outer side of the upper pressure gauge nipple and is positioned above the pressure transmission hole.
The upper portion pressure gauge passes through the upper portion pressure gauge and passes the pressure joint to be fixed in the upper portion pressure gauge nipple joint be equipped with upper portion pressure gauge protective sheath on the upper portion pressure gauge, the upper portion pressure gauge protective sheath with upper portion pressure gauge passes pressure joint threaded connection.
The lower part pressure gauge passes through the lower part pressure gauge and passes the pressure joint to be fixed in the lower part pressure gauge nipple joint be equipped with lower part pressure gauge protective sheath on the lower part pressure gauge, lower part pressure gauge protective sheath with lower part pressure gauge passes pressure joint threaded connection.
The flowmeter comprises a flowmeter body, a flowmeter upper envelope, a flow meter plug and a flow meter support body, wherein the flowmeter upper envelope is fixedly connected with the flowmeter body in a sealing mode, the flowmeter upper envelope is connected with the flow meter support body in a sealing mode, a support sleeve is arranged on the flowmeter upper envelope, a flowmeter plug is connected to the support sleeve in a pressing mode, and the flowmeter plug is fixedly connected to the upper end of the flow meter support body.
The lower end of the flowmeter is provided with a lower flowmeter jacket which is fixedly connected with the flowmeter in a sealing manner, the lower flowmeter jacket is connected with the overcurrent support body in a sealing manner, a locking retaining ring is arranged below the lower flowmeter jacket, and the locking retaining ring is fixedly connected with the lower end of the overcurrent support body.
And a spacer ring is arranged between the lower sealing module and the lower pressure gauge nipple and fixedly sleeved outside the flowmeter nipple.
The upper sealing module is clamped between the flowmeter nipple and the upper pressure gauge nipple.
And the flow meter short section is welded with the overflowing support body.
The utility model has the advantages and positive effects that: the leakage of the sealing cylinder is measured by arranging the upper pressure gauge, the lower pressure gauge and the flowmeter in the tool, so that the sealing performance of the sealing cylinder can be quantitatively determined, technical support is provided for subsequent matched well entry sealing category, and the requirements of oil well production string layered mining are met. The utility model discloses a bridge type passageway intercommunication hydraulic passage adopts the concentric structure, simple structure, and the dependable performance can be used to sealed a section of thick bamboo because long-term operation in the pit leads to corroding can't carry out the sealed condition that detects and test the sealing of ration.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
fig. 4 is a cross-sectional view taken along line C-C of fig. 1.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:
referring to fig. 1 to 4, a quantitative seal testing tool for a sealing cylinder of a layered production oil well comprises an upper joint 15, an upper pressure gauge nipple 14, a flow meter nipple 9, a lower pressure gauge nipple 4, a pressure joint 1 and a shear block pressure-bearing cylinder joint 23 which are in threaded sealing connection in sequence from top to bottom.
The piston 2 is arranged in the pressing connector 1, the piston 2 is connected with the pressing connector 1 through a shear pin 3, a pressure relief hole 1-1 is formed in the pressing connector 1, and the piston 2 is sealed on the pressure relief hole 1-1.
A lower pressure gauge 21 is fixedly connected in the lower pressure gauge nipple 4; and a lower pressure measuring hole 4-1 and a bridge channel III 4-2 which are mutually independent are arranged on the lower pressure gauge nipple 4.
An overflowing support body 19 fixedly connected with the flowmeter nipple 9 is arranged in the flowmeter nipple 9, a flowmeter 20 is fixed in the overflowing support body 19, a flow measuring hole 19-1 is formed in the overflowing support body 19, a pressure transfer hole 9-1 communicated with the flow measuring hole 19-1 is formed in the flowmeter nipple 9, and a bridge type channel II 24 staggered with the pressure transfer hole 9-1 and the flow measuring hole 19-1 is formed between the overflowing support body 19 and the flowmeter nipple 9.
An upper pressure gauge 17 is fixedly connected in the upper pressure gauge nipple 14; and an upper pressure measuring hole 14-1 and a bridge channel I which are mutually independent are arranged on the upper pressure gauge nipple 14.
The upper connector 15, the bridge channel I, the bridge channel II 24, the bridge channel III 4-1 and the pressing connector 1 are communicated.
A lower sealing module 10-1 is fixed on the outer side of the flow meter pup joint 9, and the lower sealing module 10-1 is positioned below the pressure transfer hole 9-1; an upper sealing module 10-2 is fixed on the outer side of the upper pressure gauge nipple 14, and the upper sealing module 10-2 is located above the pressure transfer hole 9-1.
In this embodiment, in order to avoid the damage of the pressure gauge, the upper pressure gauge 17 is fixed in the upper pressure gauge nipple 14 through an upper pressure gauge pressure transmission joint 18, an upper pressure gauge protective sleeve 16 is arranged on the upper pressure gauge 17, and the upper pressure gauge protective sleeve 16 is in threaded connection with the upper pressure gauge pressure transmission joint 18. Similarly, lower part pressure gauge 21 passes through upper portion pressure gauge pressure transmission joint 22 to be fixed in lower part pressure gauge nipple joint 4 be equipped with lower part pressure gauge protective sheath 5 on the pressure gauge 21 of lower part, lower part pressure gauge protective sheath 5 with lower part pressure gauge pressure transmission joint 22 threaded connection. The fixed structure of the flowmeter 20 is: the upper end of the flowmeter 20 is provided with a flowmeter upper envelope 11 which is fixedly connected with the flowmeter 20 in a sealing manner, the flowmeter upper envelope 11 is connected with the overflowing support body 19 in a sealing manner, the flowmeter upper envelope 11 is provided with a support sleeve 12, a flowmeter plug 13 is pressed on the support sleeve 12 in a pressing manner, and the flowmeter plug 13 is fixedly connected with the upper end of the overflowing support body 19. The lower end of the flowmeter 20 is provided with a lower flowmeter jacket 8 which is fixedly connected with the flowmeter in a sealing manner, the lower flowmeter jacket 8 is connected with the overflowing support body 19 in a sealing manner, a locking baffle ring 7 is arranged below the lower flowmeter jacket 8, and the locking baffle ring 7 is fixedly connected with the lower end of the overflowing support body 19. The fixed knot of lower sealed module constructs and does: and a spacer ring 6 is arranged between the lower sealing module 10-1 and the lower pressure gauge nipple 4, and the spacer ring 6 is fixedly sleeved on the outer side of the flowmeter nipple 9. The fixing structure of the upper sealing module is as follows: the upper sealing module 10-2 is sandwiched between the flow meter sub 9 and the upper pressure gauge sub 14. The flowmeter nipple 9 and the overflowing support body 19 are fixedly welded.
The utility model discloses a theory of operation:
the tool carried by an oil pipe is inserted into a sealing barrel, an upper sealing module 10-1 and a lower sealing module 10-2 are connected in the sealing barrel in a sealing mode, the oil pipe is pressurized, fluid flows in the tool through an upper connector 15, a bridge channel I, a bridge channel II 24 and a bridge channel III 4-1 in sequence, flows out of the tool through a locking baffle ring 7, a lower sealing sleeve 8 of the flowmeter, the flowmeter 20, a flow measuring hole 19-1 and a pressure transmitting hole 9-1, the flowmeter 20 measures the flow flowing out of the tool, if the sealing barrel fails in sealing, the flowmeter 20 can detect flow data, and if the sealing barrel is good in sealing performance, the detected flow is zero. The pressure values of the upper oil layer and the lower oil layer are respectively measured by the upper pressure gauge 17 and the lower pressure gauge 21, if the sealing cylinder is sealed to fail, the fluid pressure can be transmitted to the upper oil layer and the lower oil layer through the pressure transmitting hole 9-1, the pressure values detected by the upper pressure gauge 17 and the lower pressure gauge 21 can be changed, if the sealing cylinder is sealed to be perfect, the fluid pressure can not be transmitted to the upper oil layer and the lower oil layer through the pressure transmitting hole 9-1, and the pressure values detected by the upper pressure gauge 17 and the lower pressure gauge 21 can be stable and unchanged.
After the seal checking operation is finished, the hydraulic pressure is increased, the shear pin 3 is sheared, the piston 2 moves downwards, the pressure relief hole 1-1 is opened, the oil pipe is lifted, fluid in the tool can quickly flow out of the pressure relief hole 1-1, and the liquid accumulation condition in the tool can be avoided when the oil pipe is lifted. After the tool is lifted, the leakage amount of the sealing cylinder can be accurately calculated through the data of the upper pressure gauge 17, the lower pressure gauge 21 and the flowmeter 20 and the pressing time, and the sealing performance of the sealing cylinder can be quantitatively determined.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the scope of the present invention.
Claims (8)
1. The quantitative seal testing tool for the sealing cylinder of the layered oil production well is characterized by comprising an upper joint, an upper pressure gauge short joint, a flow meter short joint, a lower pressure gauge short joint, a pressurizing joint and a shear block pressure bearing cylinder joint which are in threaded sealing connection in sequence from top to bottom;
a piston is arranged in the pressing joint and is connected with the pressing joint through a shear pin, a pressure relief hole is formed in the pressing joint, and the piston is sealed on the pressure relief hole;
a lower pressure gauge is fixedly connected in the lower pressure gauge nipple; a lower pressure measuring hole and a bridge type channel III which are mutually independent are arranged on the lower pressure gauge short section;
an overflowing support body fixedly connected with the flowmeter nipple is arranged in the flowmeter nipple, a flowmeter is fixed in the overflowing support body, a flow measuring hole is formed in the overflowing support body, a pressure transmitting hole communicated with the flow measuring hole is formed in the flowmeter nipple, and a bridge type channel II staggered with the pressure transmitting hole and the flow measuring hole is formed between the overflowing support body and the flowmeter nipple;
an upper pressure gauge is fixedly connected in the upper pressure gauge nipple, and an upper pressure measuring hole and a bridge type channel I which are mutually independent are arranged on the upper pressure gauge nipple;
the upper joint, the bridge channel I, the bridge channel II, the bridge channel III are communicated with the pressing joint;
a lower sealing module is fixed on the outer side of the flow meter short section and is positioned below the pressure transmission hole; and an upper sealing module is fixed on the outer side of the upper pressure gauge nipple and is positioned above the pressure transmission hole.
2. The quantitative seal inspection tool for the sealing cylinder of the stratified oil production well as defined in claim 1, wherein the upper pressure gauge is fixed in the upper pressure gauge nipple through an upper pressure gauge pressure transmission joint, an upper pressure gauge protective sleeve is arranged on the upper pressure gauge, and the upper pressure gauge protective sleeve is in threaded connection with the upper pressure gauge pressure transmission joint.
3. The quantitative seal testing tool for the sealing cylinder of the stratified oil production well as defined in claim 1, wherein the lower pressure gauge is fixed in the lower pressure gauge nipple through a lower pressure gauge pressure transmission joint, and a lower pressure gauge protective sleeve is arranged on the lower pressure gauge and is in threaded connection with the lower pressure gauge pressure transmission joint.
4. The quantitative seal inspection tool for the sealing cylinder of the layered production oil well as defined in claim 1, wherein the upper end of the flow meter is provided with an upper seal sleeve of the flow meter, the upper seal sleeve of the flow meter is hermetically connected with the flow-through support body, the upper seal sleeve of the flow meter is provided with a support sleeve, the support sleeve is pressed with a flow meter plug, and the flow meter plug is fixedly connected with the upper end of the flow-through support body.
5. The quantitative seal inspection tool for the sealing cylinder of the stratified oil production well as defined in claim 1, wherein a lower seal sleeve of the flow meter is provided at the lower end of the flow meter and is fixedly connected with the flow-through support body, a locking stop ring is provided below the lower seal sleeve of the flow meter and is fixedly connected with the lower end of the flow-through support body.
6. The quantitative seal testing tool for the sealing cylinder of the stratified oil production well as defined in claim 1, wherein a spacer ring is arranged between the lower sealing module and the lower pressure gauge nipple, and the spacer ring is fixedly sleeved outside the flow meter nipple.
7. The quantitative seal inspection tool for a seal cartridge of a stratified producing oil well as defined in claim 1, wherein the upper seal module is sandwiched between the flow meter sub and the upper pressure gauge sub.
8. The quantitative seal inspection tool for the sealing cylinder of the stratified oil production well as defined in claim 1, wherein the flow meter nipple is welded to the flow support body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920412320.6U CN210068133U (en) | 2019-03-28 | 2019-03-28 | Quantitative seal testing tool for sealing cylinder of layered oil production well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920412320.6U CN210068133U (en) | 2019-03-28 | 2019-03-28 | Quantitative seal testing tool for sealing cylinder of layered oil production well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210068133U true CN210068133U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920412320.6U Active CN210068133U (en) | 2019-03-28 | 2019-03-28 | Quantitative seal testing tool for sealing cylinder of layered oil production well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210068133U (en) |
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2019
- 2019-03-28 CN CN201920412320.6U patent/CN210068133U/en active Active
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