CN217538653U - Blowout preventer for fixed valve closed well fluid flow channel - Google Patents
Blowout preventer for fixed valve closed well fluid flow channel Download PDFInfo
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- CN217538653U CN217538653U CN202221813617.1U CN202221813617U CN217538653U CN 217538653 U CN217538653 U CN 217538653U CN 202221813617 U CN202221813617 U CN 202221813617U CN 217538653 U CN217538653 U CN 217538653U
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- sieve tube
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Abstract
The utility model relates to the technical field of oil field production equipment, and discloses a blowout preventer for a fixed valve closed well fluid flow channel, which comprises an upper joint, a lower joint, a shell, and a collision-proof cover, a ball valve seat, a controllable sealing piston, a liquid inlet sieve tube and an anchor rod which are arranged in the shell; two ends of the shell are respectively connected with the upper joint and the lower joint, and one end of the shell is a sealing section; the anti-collision cover is in threaded connection with the upper joint; a first pin and a second pin are arranged on the periphery of the shell; a ball valve seat is arranged in the controllable sealing piston, one end in the controllable sealing piston is connected with one end of a liquid inlet sieve tube, the outer wall of the liquid inlet sieve tube is provided with a liquid inlet through hole, the other end of the liquid inlet sieve tube is connected with an anchor rod, and an anchor tile is arranged on the anchor rod; the ball valve is located between the control seal piston and the ball valve seat. The utility model discloses through twice closed well liquid flow path in examining pump workover work progress, realized preventing to play tubular column well liquid from the interior spun function of tubular column down.
Description
Technical Field
The utility model relates to an oil field oil recovery equips technical field, specifically relates to a fixed valve seals well fluid flow channel blowout preventer.
Background
There is the sucker rod in the tubular column above the oil-pumping machine well oil-well pump, can't implement in the tubular column and throw stifled, well fluid spouts along the tubular column inner wall in the workover of inspection pump, take the kill-job mode to pass through kill-job fluid proportion balanced well internal pressure, kill-job fluid proportion is overweight, can't produce oil with well killing, and kill-job fluid proportion is too light on the contrary, can't live the well, and well fluid spouts from the tubular column in, can't implement the environmental protection requirement of the green construction of cleaner production, causes the wasting of resources, environmental pollution.
When the existing product for preventing the blowout of the well fluid in the pipe column generally exists in the lower pipe column, the sealing component of the product for preventing the blowout in the pipe column can seal the well fluid flowing channel in the pipe column, and the well fluid flowing channel is opened in the pipe column through water power after the well inspection, well repair, construction and completion, so that the normal production circulating well washing is realized. However, after a pump detection period, the blowout-preventing product in the pipe column passes through, in the pump detection and well repair construction, the problems of self structure problem of the sealing assembly, corrosion resistance of the surface of the assembly, scaling and the like occur on the construction site, the sealing assembly cannot move to the position in the operation process, so that the well fluid flow channel is not tightly closed, the well fluid flows into the inner cavity of the pipe column from the inside of the product and is sprayed out, and the blowout-preventing product in the pipe column fails after the blowout-preventing product goes into the well.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the shortcoming that prior art exists, propose and design a fixed valve and seal well liquid flow channel blowout preventer, in the construction of pump access workover, can realize sealing, opening, the closed well liquid flow channel once more in the fixed valve department of oil-well pump, reach the environmental protection requirement of clean production green construction in the construction of pump access workover.
The utility model provides a technical scheme that its technical problem adopted is:
a blowout preventer for fixing a valve closed well fluid flow channel comprises an upper joint, a lower joint, a shell, an anti-collision cover, a ball valve seat, a controllable sealing piston, a fluid inlet sieve tube and an anchor rod, wherein the anti-collision cover, the ball valve seat, the controllable sealing piston, the fluid inlet sieve tube and the anchor rod are arranged in the shell; two ends of the shell are respectively connected with the upper joint and the lower joint, and one end of the shell close to the lower joint is a sealing section; the anti-collision cover is in threaded connection with the upper joint and is provided with a liquid outlet hole along the axial direction; a first pin and a second pin are arranged on the periphery of the shell; the controllable sealing piston is connected with the inner wall of the shell in a sealing manner, a ball valve seat is arranged inside the controllable sealing piston, an inner screw thread is arranged at the end part of one end inside the controllable sealing piston and is connected with one end of the liquid inlet sieve tube, a plurality of liquid inlet through holes are formed in the outer wall of the liquid inlet sieve tube, an inner screw thread is arranged at the other end of the liquid inlet sieve tube and is connected with the anchor rod, and the liquid inlet sieve tube and the inner wall of the sealing section can be sealed; the anchor rod is provided with an anchor tile; the ball valve is located between the control seal piston and the ball valve seat. The ball valve seat is embedded into the inner cavity of the controllable sealing piston, the ball valve seat is pushed to be tightly pressed and fixed to the step of the controllable sealing piston through the connection of the outer screw thread of the liquid inlet sieve tube and the inner screw thread of the controllable sealing piston, the ball valve is locked on the ball valve seat to realize the function of sealing the well liquid flowing channel for the first time, the effect that the well liquid is prevented from being sprayed out of the pipe column by the pipe column is achieved, the ball valve enters the sealing section through the liquid inlet sieve tube, and the function of sealing the well liquid flowing channel for the second time is realized. The function of preventing the well fluid of the lower lifting pipe column from being sprayed out of the pipe column is realized by sealing the well fluid flowing channel twice in the process of pump inspection and well repair construction.
Furthermore, the stock bolt is provided with a liquid inlet groove at one side of the anchor tile, and the tail part of the stock bolt is provided with a guide head.
Furthermore, the upper joint is integrally connected with the shell, so that the bearing and the sealing of the pipe column are facilitated.
Furthermore, the shell, the ball valve seat and the sealing section are plated with chrome, so that corrosive in well liquid is prevented from corroding the sealing assembly.
Furthermore, two rows of pin holes are formed in the periphery of the shell, screw threads are arranged in the pin holes, the two pin holes are formed in the upper row and are connected with the first pin, and the four pin holes are formed in the lower row and are connected with the second pin.
Furthermore, the rubber sealing ring is arranged outside the controllable sealing piston, so that the sealing performance between the controllable sealing piston and the shell is improved.
Furthermore, the outer wall of the liquid inlet sieve tube is provided with a rubber sealing ring, so that the sealing property between the liquid inlet sieve tube and the sealing section is improved.
The technical effects of the utility model:
compared with the prior art, the utility model discloses a fixed valve seals well liquid flow channel blowout preventer through twice sealing well liquid flow channel in the construction process of pump access workover, has realized that the prevention plays tubular column well liquid from the function of blowout in the tubular column down, does not influence the function of oil pumping production and circulation well-flushing after the construction completion of pump access workover, has reached the environmental protection requirement of clean production green construction in the construction process of pump access workover.
Drawings
FIG. 1 is a schematic structural view of the fixed valve closed well fluid flow channel blowout preventer of the present invention;
FIG. 2 is a front view of the anti-collision cover of the present invention;
FIG. 3 is a left side view of the anti-collision cover of the present invention;
FIG. 4 is a front view of the ball valve seat of the present invention;
fig. 5 is a left side view of the ball valve seat of the present invention.
In the figure, an upper connector 1, an anti-collision cover 2, a shell 3, a ball valve 4, a ball valve seat 5, a controllable sealing piston 6, a first pin 7, a second pin 8, a liquid inlet sieve tube 9, a rubber sealing ring 10, an anchor rod 11, an anchor tile 12, a sealing section 13, a lower connector 14, a liquid outlet 15 and a liquid inlet through hole 16.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings of the specification.
Example 1:
as shown in fig. 1-2, the blowout preventer for fixing a valve-closed well fluid flow channel according to this embodiment includes an upper joint 1, a collision-proof cover 2, a housing 3, a ball valve 4, a ball valve seat 5, a controllable sealing piston 6, a first pin 7, a second pin 8, a fluid inlet screen 9, a rubber sealing ring 10, an anchor rod 11, an anchor shoe 12, a sealing section 13, and a lower joint 14.
Two ends of the shell 3 are respectively connected with an upper joint 1 and a lower joint 14, the upper joint 1 and the shell 3 are integrally connected, so that a pipe column can be conveniently loaded and sealed, and a sealing section 13 is arranged at one end of the shell 3 close to the lower joint 14; the anti-collision cover 2 is in threaded connection with the upper joint 1, and the anti-collision cover 2 is provided with a plurality of liquid outlet holes 15 along the axial direction; 3 peripheries of casing are equipped with pin 7 and pin two 8, and is concrete, 3 peripheries of casing are equipped with two rows of cotter holes, and the cotter downthehole screw thread that is equipped with of cotter, and last one row is two cotter holes, all is connected with pin 7, and next one row is four cotter holes, all is connected with pin two 8.
The controllable sealing piston 6 is internally provided with a ball valve seat 5, the end part of one end in the controllable sealing piston 6 is provided with an internal screw thread and is connected with one end of a liquid inlet sieve tube 9, the outer wall of the liquid inlet sieve tube 9 is provided with a plurality of liquid inlet through holes 16, the other end of the liquid inlet sieve tube 9 is provided with an internal screw thread and is connected with an anchor rod 11, and the anchor rod 11 is provided with an anchor tile 12; the ball valve 4 is positioned between the other end of the control sealing piston 6 and the ball valve seat 5. The structure is arranged, and the function of preventing the well fluid of the lower lifting pipe column from being sprayed out of the pipe column can be realized by sealing the well fluid flow channel twice in the construction process of pump inspection and well repair. In order to prevent corrosive agents in the well fluid from corroding the sealing assembly, the shell 3, the ball valve 4, the ball valve seat 5 and the sealing section 13 are subjected to chrome plating, so that the service life is prolonged. For improving the leakproofness, steerable sealed piston 6 outside is equipped with rubber seal 10, has improved the leakproofness between steerable sealed piston 6 and the casing 3, feed liquor screen pipe 9 outer wall is equipped with rubber seal 10, has improved the leakproofness between feed liquor screen pipe 9 and the seal segment 13.
The anchor rod 11 is provided with a liquid inlet groove at one side of the anchor tile 12, the tail part of the anchor rod is provided with a guide head, the middle lower part of the rod body of the anchor rod 11 is provided with a longitudinal dovetail key matched with the dovetail groove of the anchor tile 12, and the lower part of the dovetail key of the rod body is provided with a transverse dovetail groove matched with the dovetail key for preventing the anchor tile 12 from moving downwards and falling off; the anchor tile 12 is provided with an oblique conical surface, the conical surface is provided with a longitudinal dovetail groove matched with a longitudinal dovetail key of the rod body, the excircle is provided with a transverse oblique angle tile tooth, the longitudinal dovetail groove of the conical surface of the anchor tile 12 is arranged on the rod body of the anchor rod 11 corresponding to the dovetail key of the anchor rod, and the dovetail key for preventing the anchor tile 12 from moving downwards and falling off is arranged in the transverse dovetail groove of the rod body and is screwed and fixed by screws.
The working principle is as follows: the utility model discloses when using, be connected the outer screw thread of top connection 1 with oil-well pump barrel lower part, steerable sealing piston 6 with connect together ball valve 4, ball valve seat 5, feed liquor screen pipe 9, stock 11, anchor tile 12 together from 3 lower parts embedding inner chambers of casing, the last row of 3 outsides of casing department of packing into of pin one 7, pin two 8 are packed into the lower row of 3 outsides of casing and are located, steerable sealing piston 6's outer edge is down restricted by pin one 7, the outer screw thread of preventing bumping cover 2 is connected from the interior screw thread of top connection 1, the precession is prevented bumping cover 2 to contacting ball valve 4, can lock ball valve 4 on ball valve seat 5, ball valve 4 is locked and is realized the function of sealing well liquid flow channel for the first time on ball valve seat 5, it prevents that well liquid from the spun effect in the tubular column to reach lower tubular column.
During well completion production, pressure is applied from the inside of an oil pipe, the controllable sealing piston 6 is pushed downwards through the ball valve seat 5, the lower edge of the controllable sealing piston 6 shears the first pin 7 under the action of pressure, the controllable sealing piston 6 drives the liquid inlet sieve tube 9 and the anchor rod 11 to move downwards under the action of the pressure, the anchor rod 11 enters the inner cavity of the lower joint 14 through the sealing section 13, the lower edge of the controllable sealing piston 6 is blocked by the second pin 8 to move downwards, meanwhile, the anchor tile 12 is clamped in the inner cavity of the lower joint 14 to limit the controllable sealing piston 6 to move upwards, and at the moment, the ball valve 4 is separated from the ball valve seat 5 to open a first closed well liquid flow channel, so that the functions of oil pumping production and circular well washing are realized.
When the pump is inspected again to construct a pipe column, pressure is applied from the oil pipe to push the controllable sealing piston 6 downwards through the ball valve seat 5, the lower edge of the controllable sealing piston 6 shears the pin II 8 under the action of pressure, the controllable sealing piston 6 drives the liquid inlet sieve tube 9 and the anchor rod 11 to move downwards under the action of the pressure, the anchor rod 11 moves downwards again in the inner cavity of the lower joint 14, the liquid inlet sieve tube 9 enters the sealing section 13, the lower part of the controllable sealing piston 6 is contacted with the sealing section 13 to stop, the downward moving anchor tile 12 is clamped in the inner cavity of the lower joint 14 to limit the controllable sealing piston 6 to move upwards, the liquid inlet sieve tube 9 enters the sealing section 13, the function of closing a well fluid flow channel for the second time is achieved, and the effect of preventing well fluid from being sprayed out of the pipe column from being achieved.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the above embodiments, and any suitable changes or modifications made thereto by those of ordinary skill in the art in accordance with the claims of the present invention should fall within the protection scope of the present invention.
Claims (7)
1. A blowout preventer for a fixed valve closed well fluid flow channel comprises an upper joint, a lower joint and a shell; two ends of the shell are respectively connected with the upper joint and the lower joint; the method is characterized in that: the shell is internally provided with an anti-collision cover, a ball valve seat, a controllable sealing piston, a liquid inlet sieve tube and an anchor rod; one end of the shell close to the lower joint is a sealing section; the anti-collision cover is in threaded connection with the upper joint and is provided with a liquid outlet hole along the axial direction; a first pin and a second pin are arranged on the periphery of the shell; the controllable sealing piston is connected with the inner wall of the shell in a sealing manner, the ball valve seat is arranged inside the controllable sealing piston, the end part of one end inside the controllable sealing piston is provided with an inner screw thread and is connected with one end of the liquid inlet sieve tube, the outer wall of the liquid inlet sieve tube is provided with a liquid inlet through hole, the other end of the liquid inlet sieve tube is provided with an inner screw thread and is connected with the anchor rod, and the liquid inlet sieve tube and the inner wall of the sealing section can be sealed; the anchor rod is provided with an anchor tile; the ball valve is located between the control seal piston and the ball valve seat.
2. The fixed valve closed well fluid flow passage blowout preventer of claim 1, wherein: the anchor rod is provided with a liquid inlet groove at one side of the anchor tile, and the tail part of the anchor rod is provided with a guide head.
3. The fixed valve closed well fluid flow passage blowout preventer of claim 1, wherein: the upper joint is integrally connected with the shell.
4. The fixed valve closed well fluid flow passage blowout preventer of claim 1, wherein: the shell, the ball valve seat and the sealing section are plated with chrome.
5. The fixed valve closed well fluid flow passage blowout preventer of claim 1, wherein: and a rubber sealing ring is arranged outside the controllable sealing piston.
6. The fixed valve closed well fluid flow passage blowout preventer of claim 1, wherein: and the outer wall of the liquid inlet sieve tube is provided with a rubber sealing ring.
7. The fixed valve closed well fluid flow passage blowout preventer of any one of claims 1-6, wherein: two rows of pin holes are formed in the periphery of the shell, screw threads are arranged in the pin holes, the two pin holes in the previous row are connected with the first pin, and the four pin holes in the next row are connected with the second pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221813617.1U CN217538653U (en) | 2022-07-13 | 2022-07-13 | Blowout preventer for fixed valve closed well fluid flow channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221813617.1U CN217538653U (en) | 2022-07-13 | 2022-07-13 | Blowout preventer for fixed valve closed well fluid flow channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217538653U true CN217538653U (en) | 2022-10-04 |
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ID=83423735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221813617.1U Active CN217538653U (en) | 2022-07-13 | 2022-07-13 | Blowout preventer for fixed valve closed well fluid flow channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217538653U (en) |
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2022
- 2022-07-13 CN CN202221813617.1U patent/CN217538653U/en active Active
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