CN211201914U - Double-tube separate injection pressurized operation device - Google Patents
Double-tube separate injection pressurized operation device Download PDFInfo
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- CN211201914U CN211201914U CN201921040356.2U CN201921040356U CN211201914U CN 211201914 U CN211201914 U CN 211201914U CN 201921040356 U CN201921040356 U CN 201921040356U CN 211201914 U CN211201914 U CN 211201914U
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Abstract
The utility model provides a double-barrelled area of annotating presses operation device, at least including intubate and sealed assembly, intubate one end be located sealed assembly. The intubation tube comprises an intubation tube main body, an intubation tube piston and a telescopic cylinder connector, wherein the lower end of the intubation tube main body is connected with the telescopic cylinder connector, and the piston is located in the intubation tube main body. The sealing assembly consists of a sealing cylinder and a telescopic cylinder, wherein the telescopic cylinder is inserted into the sealing cylinder and is fixedly connected through shear pins. The sealing cylinder comprises an upper joint, an insertion pipe sealing ring, a pressing ring, a telescopic cylinder sealing ring, a backwashing sleeve and a pin seat; the pipe inserting sealing ring is arranged in a sealing ring groove of the upper joint, the telescopic cylinder sealing ring is embedded into the pressing ring, the upper joint is connected with the pressing ring, the lower end of the pressing ring is connected with the backwashing sleeve, and the backwashing sleeve is connected with the pin seat through threads. The utility model discloses can solve unable self-closing, isolated sleeve pipe pressure behind the ordinary sealing tool provides the intubate, can not realize double-barrelled branch and annotate the problem of pressing the area operation.
Description
Technical Field
The utility model relates to an oil field oil recovery technical field, concretely relates to double-barrelled branch is annotated and is pressed operation device in area.
Background
Along with the development of oilfield flooding, the research of double-pipe separate injection technology is developed for mastering the production condition of each flooding interval in real time and knowing the basic conditions of oil reservoir temperature, pressure and the like. At present, an inserting pipe and a sealing assembly suitable for double-pipe separate injection pressurized operation are not available in the market temporarily, so that the products are urgently needed to fill the blank of the market so as to meet the requirement of fine water injection.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem that an inserting pipe and a sealing assembly suitable for double-pipe separate injection pressurized operation are not available in the current market, the utility model provides a double-pipe separate injection pressurized operation device which can be put into a well together with a water injection pipe column under a pressurized environment, and high-pressure water in an isolation sleeve enters the inserting pipe through the sealing assembly; when the pipe column needs to be lifted under pressure, the injection is stopped, the insertion pipe is lifted up and drives the telescopic cylinder, the water outlet of the sealing assembly is closed, high pressure in the isolation sleeve is transmitted into the sealing assembly, and the operation requirements of double-pipe injection under pressure of 'normal pressure of the inner pipe and pressure of the outer pipe' are met.
The utility model adopts the technical proposal that:
a double-tube separated injection pressurized operation device at least comprises an insertion tube and a sealing assembly, wherein one end of the insertion tube is positioned in the sealing assembly.
The intubation tube comprises an intubation tube main body, an intubation tube piston and a telescopic cylinder connector, wherein the lower end of the intubation tube main body is connected with the telescopic cylinder connector, and the piston is located in the intubation tube main body.
The sealing assembly consists of a sealing cylinder and a telescopic cylinder, wherein the telescopic cylinder is inserted into the sealing cylinder and is fixedly connected through shear pins.
The sealing cylinder comprises an upper joint, an insertion pipe sealing ring, a pressing ring, a telescopic cylinder sealing ring, a backwashing sleeve and a pin seat; the pipe inserting sealing ring is arranged in a sealing ring groove of the upper joint, the telescopic cylinder sealing ring is embedded into the pressing ring, the upper joint is connected with the pressing ring, the lower end of the pressing ring is connected with the backwashing sleeve, the backwashing sleeve is connected with the pin seat through threads, and the backwashing sleeve is provided with a backwashing sleeve water outlet.
The telescopic cylinder at least comprises an intubation positioning ring, a C-shaped steel ring, a baffle ring, a supporting tube, a single-flow piston seat, a telescopic cylinder piston, a spring and a spring seat; intubate holding ring be connected with keeping off the ring, C shaped steel circle be located keep off between ring and the intubate holding ring, keep off the ring lower extreme and be connected with stay tube and single current piston seat in proper order, the spring holder pass through the screw thread and be connected with single current piston seat, spring one end and spring seat connection, the other end and telescopic cylinder piston connection, telescopic cylinder piston and spring all be located single current piston seat.
The upper joint and the pressing ring are connected and fastened through screw threads.
The lower end of the pressing ring is connected with the backwashing sleeve through a screw thread.
The utility model has the advantages that:
the utility model relates to a double-barrelled branch is annotated and is pressed operation device, the utility model provides a device has given intubate and sealed assembly. The insertion pipe and the sealing assembly can solve the problems that the common sealing tool cannot be automatically closed and isolate the pressure of a sleeve after the insertion pipe is put forward, and double-pipe separate injection under-pressure operation cannot be realized.
The following will be further described with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the insertion tube principle of the double-tube separate injection operation with pressure according to the present invention.
Fig. 3 is a schematic diagram of the sealing assembly principle of the double-tube separate injection operation with pressure according to the present invention.
In the figures, the reference numbers are: 1. an upper joint; 2. an intubation tube sealing ring; 3. pressing a ring; 4. a telescopic cylinder sealing ring; 5. a cannula positioning ring; 6. c-shaped steel rings; 7. a water outlet; 8. a baffle ring; 9. supporting a tube; 10. backwashing the sleeve; 11. a pin seat; 12. shearing the nails; 13. a single flow piston seat; 14. a telescopic cylinder piston; 15. a spring; 16. a spring seat; 17. inserting a tube; 1701. a cannula body; 1702. a cannula piston; 1703. a telescopic cylinder connector; 18. and (5) sealing the assembly.
Detailed Description
Example 1:
in order to overcome the problem that an inserting pipe and a sealing assembly suitable for double-pipe separate injection under-pressure operation are not available in the current market, the utility model provides a double-pipe separate injection under-pressure operation device as shown in figures 1-3, which can be put into a well together with a water injection pipe column under an under-pressure environment, and high-pressure water in an isolation sleeve enters the inserting pipe through the sealing assembly; when the pipe column needs to be lifted under pressure, the injection is stopped, the insertion pipe is lifted up and drives the telescopic cylinder, the water outlet of the sealing assembly is closed, high pressure in the isolation sleeve is transmitted into the sealing assembly, and the operation requirements of double-pipe injection under pressure of 'normal pressure of the inner pipe and pressure of the outer pipe' are met.
A double-tube dispensing pressurized operation device at least comprises an insertion tube 17 and a sealing assembly 18, wherein one end of the insertion tube 17 is positioned in the sealing assembly 18.
The working principle of the utility model is as follows: the sealing assembly 18 is pressed into the water injection well along with the outer oil pipe under pressure; the insertion pipe 17 is connected with an inner layer oil pipe and is arranged below the insertion pipe positioning ring 5 of the sealing assembly 18, the length of the oil pipe in the wellhead accessory is adjusted, the insertion pipe 17 is pushed to open the telescopic cylinder of the sealing assembly 18 by lowering the wellhead and the weight of the pipe column, the water outlet of the insertion pipe is communicated with the water outlet 7 of the backwashing sleeve, the water injection wellhead is fixed well through a bolt, a piston pin in the insertion pipe 17 is cut off by pressing the inner pipe, a piston in the insertion pipe 17 falls to expose the water injection port of the insertion pipe, and water can be normally injected from the inner pipe; when the pipe column needs to be lifted under pressure, the bolt of the upper wellhead four-way (inner pipe hanger) is stopped and disassembled, then the wellhead and the inner oil pipe are lifted up slowly together, so that the pipe inserting telescopic cylinder connector is matched with the C-shaped steel ring of the sealing assembly, and the sealing assembly telescopic cylinder is driven to move upwards to close the sealing assembly, so that the pressure of the sleeve is isolated outside the sealing assembly, and the inner pipe can be lifted under normal pressure; when the outer pipe is lifted, a pressure operation machine is needed, so that the pressure operation of double-pipe dispensing is realized.
In order to master the production condition of each water injection layer section in real time and know the basic conditions of oil reservoir temperature, pressure and the like, the double-tube separate injection technical research is developed. At present, an inserting pipe 17 and a sealing assembly 18 suitable for double-pipe separate injection pressurized operation are not available in the market temporarily, so that the products are urgently needed to fill the blank of the market so as to meet the requirement of fine water injection. The utility model discloses just provide intubate 17 and the sealed assembly 18 that satisfies the demand. The utility model discloses can solve unable self-closing, isolated sleeve pipe pressure after ordinary sealing tool proposes the intubate, and can realize double-barrelled branch and annotate the problem of pressing the operation in the area.
The utility model is put into the well together with the water injection pipe column under the environment with pressure, and the high pressure water in the isolation sleeve enters the insertion pipe 17 through the sealing assembly 18; when the pipe column needs to be lifted under pressure, the injection is stopped, the insertion pipe 17 is lifted up and the telescopic cylinder is driven, the water outlet of the sealing assembly 18 is closed, the high pressure in the isolation sleeve is transmitted into the sealing assembly 18, and the operation requirements of double-pipe injection under pressure of 'normal pressure of the inner pipe and pressure of the outer pipe' are met.
Example 2:
based on embodiment 1, in this embodiment, the cannula 17 includes a cannula body 1701, a cannula piston 1702 and a telescopic cylinder connector 1703, the lower end of the cannula body 1701 is connected with the telescopic cylinder connector 1703, and the piston 1702 is located in the cannula body 1701.
The utility model discloses in, intubate 17 comprises intubate main part 1701, intubate piston 1702 and telescopic tube connector 1703 at least. The upper part of the cannula body 1701 is provided with a thread connected with an oil pipe, the middle part is provided with a water outlet hole and a pin hole, the pin hole is used for fixing the cannula piston 1702, and the lower part is provided with a connecting thread connected with the telescopic cylinder connector 1703. The cannula plunger 1702 has two seals on the top, a tapered surface on the middle portion that matches the tapered surface of the interior of the cannula body 1701, and a detent hole on the bottom that allows the cannula plunger 1702 to be pinned within the cannula body 1701. The telescope connector 1703 is screwed to the cannula body 1701, with a recess in the middle for connection to the telescope of the seal assembly 18 and a conical guide in the lower part.
The sealing assembly 18 is composed of a sealing cylinder and a telescopic cylinder, wherein the telescopic cylinder is inserted into the sealing cylinder and is fixedly connected through shear pins.
The sealing cylinder comprises an upper joint 1, an intubation tube sealing ring 2, a pressing ring 3, a telescopic cylinder sealing ring 4, a backwashing sleeve 10 and a pin seat 11; the pipe inserting sealing ring 2 is arranged in a sealing ring groove of the upper joint 1, the telescopic cylinder sealing ring 4 is embedded into the pressing ring 3, the upper joint 1 is connected with the pressing ring 3, the lower end of the pressing ring 3 is connected with the backwashing sleeve 10, the backwashing sleeve 10 is connected with the pin seat 11 through threads, and the backwashing sleeve 10 is provided with a backwashing sleeve water outlet 7.
The utility model discloses in, the equipment process of a sealed section of thick bamboo as follows: firstly, an intubation tube sealing ring 2 is arranged in a sealing ring groove of an upper joint 1, a telescopic cylinder sealing ring 4 is embedded into a pressing ring 3, the upper joint 1 and the pressing ring 3 are connected and fastened through screw threads, the lower end of the pressing ring 3 is connected with a backwashing sleeve 10 through screw threads, and finally a pin seat 11 is connected with the backwashing sleeve 10 through screw threads.
The telescopic cylinder at least comprises an intubation positioning ring 5, a C-shaped steel ring 6, a baffle ring 8, a supporting tube 9, a single-flow piston seat 13, a telescopic cylinder piston 14, a spring 15 and a spring seat 16; intubate holding ring 5 with keep off ring 8 and be connected, C shaped steel circle 6 be located and keep off between ring 8 and the intubate holding ring 5, keep off 8 lower extremes of ring and be connected with stay tube 9 and single current piston seat 13 in proper order, spring holder 16 be connected with single current piston seat 13 through the screw thread, 15 one end of spring be connected with spring holder 16, the other end is connected with telescopic cylinder piston 14, telescopic cylinder piston 14 all be located single current piston seat 13 with spring 15.
The utility model discloses the assembly process of well telescopic cylinder as follows: firstly, the C-shaped steel ring 6 is placed into the baffle ring 8 and is connected with the baffle ring 8 through the insertion pipe positioning ring 5 through threads, the baffle ring 8 is tightly connected with the supporting pipe 9 and the single-flow piston seat 13 through threads in sequence, finally, the telescopic cylinder piston 14 and the spring 15 are sequentially plugged into the single-flow piston seat 13, and the spring seat 16 is connected with the single-flow piston seat 13 through threads.
The upper joint 1 and the pressing ring 3 are connected and fastened through screw threads.
The lower end of the pressing ring 3 is connected with the backwashing sleeve 10 through a screw thread.
The utility model discloses in, the final assembly process of sealed assembly as follows: the pin seat 11 of the sealing cylinder is firstly detached, then the telescopic cylinder is inserted into the sealing cylinder, then the pin seat 11 of the sealing cylinder is installed back, the screw thread is screwed, and finally the sealing cylinder and the telescopic cylinder are fixed through the shear pin, so that the final assembly of the sealing assembly is completed.
A double-tube separate injection pressurized operation method comprises the following specific steps:
firstly, respectively assembling the cannula 17 and the sealing assembly 18; then the sealing assembly 18 is pressed into the water injection well along with the outer oil pipe under pressure; an insertion pipe 17 is connected with an inner layer oil pipe and is arranged below the position of an insertion pipe positioning ring 5 of a sealing assembly 18, the length of the oil pipe in a wellhead accessory is adjusted, the insertion pipe 17 is pushed to open a telescopic cylinder of the sealing assembly 18 by lowering the weight of a wellhead and a pipe column, at the moment, a water outlet of the insertion pipe is communicated with a water outlet 7 of a backwashing sleeve, a water injection wellhead is fixed well through a bolt, a piston pin in the insertion pipe 17 is cut off by pressing the inner pipe, an insertion pipe piston 1702 falls to expose the insertion pipe water injection port, and water can be normally injected from; when the pipe column needs to be lifted under pressure, the upper wellhead four-way bolt is stopped and disassembled, then the wellhead and the inner layer oil pipe are lifted slowly together, so that the telescopic cylinder connector 1703 of the insertion pipe 17 is matched with the C-shaped steel ring 6 of the sealing assembly 18, the telescopic cylinder of the sealing assembly 18 is driven to move upwards to close the sealing assembly 18, the pressure of the sleeve is isolated outside the sealing assembly 18, and the inner pipe can be lifted under normal pressure; when the outer pipe is lifted, a pressure operation machine is needed, so that the pressure operation of double-pipe dispensing is realized.
As shown in fig. 2, the assembly process of the cannula 17 is:
in a first step, as shown in FIG. 2, a seal of cannula plunger 1702 is first installed in a seal groove of plunger 1702.
In a second step, the cannula plunger 1702 is placed into the infusion channel of the cannula body 1701 and tightened.
Third, pins are installed from the pin holes of the cannula body 1701 to secure the piston 1702.
Fourth, the telescope joint 1703 is screwed to the cannula body 1701, which completes the assembly of the cannula 17.
As shown in fig. 3, the assembly process of the seal assembly 18 is:
in the first step, as shown in fig. 3, the cannula sealing ring 2 is first installed in the sealing ring groove of the upper joint 1.
And secondly, placing the telescopic cylinder sealing ring 4 into the compression ring 3 and tightly abutting against the compression ring.
And thirdly, connecting the upper joint 1 and the pressure ring 3 through threads.
Fourthly, the backwashing sleeve 10 and the pressing ring 3 are connected through threads, and the assembled sealing cylinder (only the differential pin seat 11) is placed for standby.
And fifthly, placing the C-shaped steel ring 6 into the baffle ring 8.
And sixthly, fixing the intubation positioning ring 5 and the baffle ring 8 through threads, and ensuring that the steel ring can move slightly in the intubation positioning ring.
And seventhly, fixing the baffle ring 8 and the support tube 9 through threads.
And eighthly, fixing the support tube 9 and the single-flow piston seat 13 through threads.
And a ninth step of sequentially plugging the piston 14 and the spring 15 into the single flow piston seat 13.
Tenth step, the spring seat 16 tightly presses the piston 14 in the single flow piston seat 13 through the spring 15, and the spring seat 16 is tightly connected with the single flow piston seat 13 through a screw thread, so that the assembly of the telescopic cylinder is completed.
And step ten, putting the telescopic cylinder assembled in the step ten into the sealed cylinder (only the differential pin seat 11) assembled in the step four.
And step eleven, sleeving the pin seat 11 into the lower end of the telescopic cylinder in the step eleven, and tightly connecting the pin seat with the backwashing sleeve 10 through threads.
And a thirteenth step, the shear pins 12 penetrate through the holes on the pin seat 11 and are embedded into the pin grooves of the support tube 9, and the telescopic tube is fixed, so that the whole assembly of the sealing assembly 18 is completed.
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention. The device structure and method steps not described in detail in this embodiment are well known in the art and commonly used in the art, and will not be described here.
Claims (1)
1. A double-tube separated injection pressurized operation device is characterized in that: the device at least comprises an insertion pipe (17) and a sealing assembly (18), wherein one end of the insertion pipe (17) is positioned in the sealing assembly (18); the intubation tube (17) comprises an intubation tube body (1701), an intubation tube piston (1702) and a telescopic cylinder connector (1703), wherein the lower end of the intubation tube body (1701) is connected with the telescopic cylinder connector (1703), and the piston (1702) is positioned in the intubation tube body (1701); the sealing assembly (18) consists of a sealing cylinder and a telescopic cylinder, and the telescopic cylinder is inserted into the sealing cylinder and is fixedly connected through shear pins; the sealing cylinder comprises an upper joint (1), an intubation tube sealing ring (2), a pressing ring (3), a telescopic cylinder sealing ring (4), a backwashing sleeve (10) and a pin seat (11); the pipe inserting sealing ring (2) is arranged in a sealing ring groove of the upper joint (1), the telescopic cylinder sealing ring (4) is embedded in the pressing ring (3), the upper joint (1) is connected with the pressing ring (3), the lower end of the pressing ring (3) is connected with the backwashing sleeve (10), the backwashing sleeve (10) is connected with the pin seat (11) through threads, and the backwashing sleeve (10) is provided with a backwashing sleeve water outlet (7); the telescopic cylinder at least comprises an intubation positioning ring (5), a C-shaped steel ring (6), a baffle ring (8), a supporting tube (9), a single-flow piston seat (13), a telescopic cylinder piston (14), a spring (15) and a spring seat (16); the intubation positioning ring (5) is connected with the baffle ring (8), the C-shaped steel ring (6) is positioned between the baffle ring (8) and the intubation positioning ring (5), the lower end of the baffle ring (8) is sequentially connected with the support tube (9) and the single-flow piston seat (13), the spring seat (16) is connected with the single-flow piston seat (13) through a screw thread, one end of the spring (15) is connected with the spring seat (16), the other end of the spring is connected with the telescopic cylinder piston (14), and the telescopic cylinder piston (14) and the spring (15) are both positioned in the single-flow piston seat (13); the upper joint (1) is connected and fastened with the pressure ring (3) through a screw thread; the lower end of the pressure ring (3) is connected with the backwashing sleeve (10) through a screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921040356.2U CN211201914U (en) | 2019-07-05 | 2019-07-05 | Double-tube separate injection pressurized operation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921040356.2U CN211201914U (en) | 2019-07-05 | 2019-07-05 | Double-tube separate injection pressurized operation device |
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| Publication Number | Publication Date |
|---|---|
| CN211201914U true CN211201914U (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921040356.2U Active CN211201914U (en) | 2019-07-05 | 2019-07-05 | Double-tube separate injection pressurized operation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259422A (en) * | 2019-07-05 | 2019-09-20 | 中国石油天然气股份有限公司 | The two-tube dispensing operation device under pressure of one kind and method |
-
2019
- 2019-07-05 CN CN201921040356.2U patent/CN211201914U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259422A (en) * | 2019-07-05 | 2019-09-20 | 中国石油天然气股份有限公司 | The two-tube dispensing operation device under pressure of one kind and method |
| CN110259422B (en) * | 2019-07-05 | 2023-11-28 | 中国石油天然气股份有限公司 | Double-pipe separate injection operation device and method under pressure |
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