CN112878958A - Radial valve system of packer valve joint - Google Patents
Radial valve system of packer valve joint Download PDFInfo
- Publication number
- CN112878958A CN112878958A CN202110365838.0A CN202110365838A CN112878958A CN 112878958 A CN112878958 A CN 112878958A CN 202110365838 A CN202110365838 A CN 202110365838A CN 112878958 A CN112878958 A CN 112878958A
- Authority
- CN
- China
- Prior art keywords
- valve
- shut
- opening
- core
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 84
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 229920001971 elastomer Polymers 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims description 16
- 238000005336 cracking Methods 0.000 claims 3
- 210000004907 gland Anatomy 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 238000010008 shearing Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 16
- 230000000903 blocking effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a radial valve system of a packer valve joint, which comprises a body shell, wherein an opening valve, a one-way valve and a closing valve are sequentially arranged on the body shell, a liquid inlet channel of the opening valve is arranged at the bottom of the opening valve, and liquid in a well can flow to the bottom of the opening valve through the liquid inlet channel of the opening valve; the bottom of the one-way valve is provided with a one-way valve liquid inlet channel which is communicated with the middle lower part of the opening valve; the middle upper part of the shut-off valve is provided with a shut-off valve liquid inlet channel which is communicated with the middle part of the one-way valve; the middle part of the closing valve is provided with a liquid inlet channel, the middle lower part of the closing valve is provided with a liquid return channel, and the liquid inlet channel and the liquid return channel are respectively communicated with the rubber cylinder. The valve core is ingenious in structural design, so that a sealing ring is not damaged by shearing when the valve core is installed and works, and the sealing is reliable; the valve core structure of the shut-off valve is in a split step shape, so that the one-way differential pressure control of the shut-off valve is realized, the shut-off pressure is accurate, and the shut-off is reliable.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas-solid well completion tools, in particular to a radial valve system of a packer valve joint.
Background
The setting of the casing external packer for well cementation is realized by controlling a valve system to expand a packer rubber cylinder through pressure change, so that the purpose of sealing a stratum by a borehole ring is achieved. The control valve system is a core control system of the casing external packer, is an integrated structure of a packer liquid inlet channel, a pressure control system and a sealing system, influences the expansion effect of the tool and the effective packing degree of the stratum, and is a guarantee for the successful application of the external packing well completion technology.
The casing external packer composed of the control valve system and the packer rubber cylinder is widely applied to the well cementing and completion of a horizontal well, mainly used for effectively packing production zones, avoiding the channeling among the production zones and providing a foundation for the later production control and yield increase transformation. The conventional packer control valve is complex, the action among the valves is discontinuous, and a liquid flow channel cannot transfer or seal liquid; if one valve fails, the control valve system will fail as a whole.
The patent No. CN204082090U discloses a control valve system of a casing external packer, which comprises a locking valve, a check valve and a pressure limiting valve which are respectively arranged on a valve body, wherein the bottom of a valve hole of the locking valve is communicated with a liquid inlet channel I, the valve hole of the locking valve is communicated with the bottom of the valve hole of the check valve through a liquid inlet channel II, the valve hole of the check valve is communicated with the valve hole of the pressure limiting valve through a liquid inlet channel III, the valve hole of the pressure limiting valve is communicated with a liquid inlet channel IV communicated with an expansion cavity of a packer rubber barrel, and the bottom of the valve hole of the pressure limiting valve is communicated with a liquid return. Each group of valves in the patent has simple structure and each valve is opened flexibly; the double flow-breaking and single flow functions of the locking valve and the check valve prevent liquid in the rubber cylinder from flowing back, and permanent sealing is realized. However, this packer control valve system is inconvenient to install, and in addition, when installing and using, because each valve rod needs to move in the valve hole, the sealing ring on the valve rod is easy to damage, thereby causing unreliable sealing.
Disclosure of Invention
The invention provides a radial valve system of a packer valve joint, which has the effects of convenience in installation, difficult damage to a sealing ring and reliable sealing. The specific technical scheme is as follows:
a radial valve system of a packer valve joint comprises a body shell, wherein an opening valve, a one-way valve and a closing valve are sequentially arranged on the body shell, a liquid inlet channel of the opening valve is arranged at the bottom of the opening valve, and liquid in a well can flow to the bottom of the opening valve through the liquid inlet channel of the opening valve; the bottom of the one-way valve is provided with a one-way valve liquid inlet channel which is communicated with the middle lower part of the opening valve; the middle upper part of the shut-off valve is provided with a shut-off valve liquid inlet channel which is communicated with the middle part of the one-way valve; the middle part of the closing valve is provided with a liquid inlet channel, the middle lower part of the closing valve is provided with a liquid return channel, and the liquid inlet channel and the liquid return channel are respectively communicated with the rubber cylinder.
Further, an opening valve hole, a one-way valve hole and a closing valve hole are arranged on the body shell, the closing valve hole is a through hole, and the opening valve body, the one-way valve body and the closing valve body are respectively accommodated in the opening valve hole, the one-way valve hole and the closing valve hole to form an opening valve, a one-way valve and a closing valve.
Further, the opening valve body comprises an opening valve core, the opening valve core is arranged in an opening valve hole, the upper part of the opening valve core is rod-shaped, the upper part of the opening valve core is connected with an opening valve pressure cap, and the opening valve pressure cap is connected with an inlet of the opening valve hole; the opening valve pressure cap is provided with a through hole, the rod-shaped upper end is provided with an opening valve elastic retaining ring, and the upper end of the opening valve spool and the opening valve elastic retaining ring are accommodated in the through hole of the opening valve pressure cap in a pressing manner; the lower part of the valve core of the opening valve is in a step shape, the lower end of the valve hole of the opening valve is a step hole matched with the lower part of the valve core of the opening valve, and an upper sealing ring of the opening valve and a lower sealing ring of the opening valve are respectively arranged at two ends of the step shape at the lower part of the valve core of the opening valve.
Further, the valve core of the opening valve is connected with the pressure cap of the opening valve through the opening valve pin nail; the upper part of the valve core of the opening valve is sleeved with an opening valve spring, one end of the opening valve spring is connected with the opening valve pressing cap, and the other end of the opening valve spring is connected with the lower part of the valve core of the opening valve in a step shape.
Furthermore, the check valve body comprises a check valve core, and the check valve core is accommodated in the check valve hole; the one-way valve core is provided with a blind hole, a one-way valve spring is arranged in the blind hole, one end of the one-way valve spring is connected with the one-way valve core, the other end of the one-way valve spring is connected with a one-way valve pressing cap, and the one-way valve pressing cap is connected with the upper end of the one-way valve hole.
Furthermore, the check valve core is in a step shape, a check valve core sealing ring is arranged at the small-diameter end of the check valve core, a check valve core sealing belt is arranged at the reducing conical surface of the check valve core, and a step hole matched with the check valve core is arranged at the lower part of the check valve hole.
Furthermore, the valve body of the shut-off valve comprises an upper valve core of the shut-off valve and a lower valve core of the shut-off valve which are connected, the upper valve core of the shut-off valve is connected with an upper pressure cap of the shut-off valve, and the upper pressure cap of the shut-off valve is connected with the upper end of a valve hole of the shut-off valve; the lower valve core of the shut-off valve is connected with a lower pressure cap of the shut-off valve, and the lower pressure cap of the shut-off valve is connected with the lower end of a valve hole of the shut-off valve.
Furthermore, one end of the upper valve core of the closing valve, which is connected with the lower valve core of the closing valve, is in a step shape with a large top and a small bottom, one end of the lower valve core of the closing valve, which is far away from the upper valve core of the closing valve, is in a step shape with a small top and a large bottom, and a valve hole of the closing valve is a bidirectional step through hole matched with the upper valve core of the closing.
Furthermore, sealing rings are arranged on the stepped surfaces of the upper valve core of the closing valve and the lower valve core of the closing valve, and sealing belts are arranged on the stepped reducing conical surfaces of the upper valve core of the closing valve and the lower valve core of the closing valve.
Further, the position of the minimum diameter of the valve hole of the shut-off valve is communicated with a liquid inlet channel of the shut-off valve; the lower part of the reducing conical surface at the lower end of the valve hole of the closing valve is communicated with the liquid inlet channel of the rubber cylinder; the lower pressure cap of the shut-off valve, the lower valve core of the shut-off valve and the valve hole of the shut-off valve are surrounded to form a liquid return cavity related to the shut-off valve, and the liquid return channel is communicated with the liquid return cavity.
The invention has ingenious structural design, can ensure that the sealing ring is not damaged by shearing when the valve core is installed and works, and the valve core is sealed reliably by using the compound sealing of the sealing ring and the conical surface elastomer sealing strip; the valve core structure of the shut-off valve is in a split step shape, so that the shut-off valve is controlled by one-way differential pressure, the shut-off pressure is accurate, and the shut-off is reliable; the closing valve is processed into a bidirectional through hole, the pressing cap at the other end is replaceable, and the pressure test, the pressure monitoring and the detection are convenient.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic view of the packer valve joint radial valving of the present invention in an initial state;
FIG. 2 is a schematic view of the packer valve joint radial valving of the present invention in an operational state;
FIG. 3 is a schematic representation of the closed state of the packer valve joint radial valving of the present invention;
FIG. 4 is a cross-sectional view of the open valve spool of the radial valving system of the packer valve joint of the present invention;
FIG. 5 is a cross-sectional view of a one-way valve spool of the radial valving system of the packer valve joint of the present invention;
FIG. 6 is a schematic diagram of the connection of the upper and lower spools of a shut-off valve of the radial valving system of the packer valve joint of the present invention.
Detailed Description
For a better understanding of the objects, functions, and details of the design of the present invention, the packer valve joint radial valve train of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1-6, the radial valve system of the packer valve joint of the present invention comprises a body casing 1, wherein an open valve, a one-way valve and a close valve are sequentially arranged on the body casing 1, a feed channel 22 of the open valve is arranged at the bottom of the open valve, and the well liquid can flow to the bottom of the open valve through the feed channel 22 of the open valve; a check valve liquid inlet channel 23 is arranged at the bottom of the check valve, and the check valve liquid inlet channel 23 is communicated with the middle lower part of the opening valve; a liquid inlet channel 24 of the shut-off valve is arranged at the middle upper part of the shut-off valve, and the liquid inlet channel 24 of the shut-off valve is communicated with the middle part of the one-way valve; the middle part of the closing valve is provided with a rubber cylinder liquid inlet channel 25, the middle lower part of the closing valve is provided with a liquid return channel 26, and the rubber cylinder liquid inlet channel 25 and the liquid return channel 26 are respectively communicated with the rubber cylinder.
The body case 1 of this embodiment is provided with an open valve hole 19, a check valve hole 20, and a close valve hole 21, the close valve hole 21 is a through hole, and the open valve body, the check valve body, and the close valve body are respectively accommodated in the open valve hole 19, the check valve hole 20, and the close valve hole 21 to form an open valve, a check valve, and a close valve.
Specifically, as shown in fig. 1 and 4, the opening valve body includes an opening valve spool 5, the opening valve spool 5 is disposed in an opening valve bore 19, the upper portion of the opening valve spool 5 is rod-shaped, the upper portion of the opening valve spool 5 is connected to an opening valve pressure cap 3, and the opening valve pressure cap 3 is connected to an inlet of the opening valve bore 19; the opening valve pressure cap 3 is provided with a through hole, the rod-shaped upper end is provided with a blocking ring groove, a valve opening elastic blocking ring 18 is arranged in the blocking ring groove, the upper end of the valve core 5 of the opening valve and the valve opening elastic blocking ring 18 are accommodated in the through hole of the valve opening pressure cap 3 after being compressed, the valve core 5 of the opening valve and the valve opening pressure cap 3 are connected through a valve opening pin 4, and the relative position of the valve core 5 of the opening valve and the valve opening pressure cap 3 is limited; the lower part of the valve core 5 of the opening valve is in a step shape with a big top and a small bottom, the lower end of the valve hole 19 of the opening valve is a step hole matched with the lower part of the valve core 5 of the opening valve, and the two ends of the step shape at the lower part of the valve core 5 of the opening valve are respectively provided with an upper sealing ring 6 of the opening valve and a lower sealing ring 27 of the opening valve. Because the lower end of the valve core 5 of the open valve is in a step shape, the lower sealing ring 27 of the open valve can be prevented from being damaged by shearing when the valve core 5 of the open valve is installed and in the working process.
It is worth noting that the upper part of the open valve spool 5 is sleeved with an open valve spring 2, one end of the open valve spring 2 is connected with the open valve pressing cap 3, the other end of the open valve spring 2 is connected with the stepped shape at the lower part of the open valve spool 5, after liquid transfer is completed, the open valve spool 5 and the open valve elastic retaining ring 18 move downwards under the action of the open valve spring 2, the open valve spool 5 is pushed to the lowest position of the open valve hole 19, and the one-way valve liquid inlet channel 23 is closed.
As shown in fig. 1 and 5, the check valve body includes a check valve spool 10, and the check valve spool 10 is received in a check valve bore 20; the check valve core 10 is provided with a blind hole, a check valve spring 8 is arranged in the blind hole, one end of the check valve spring 8 is connected with the check valve core 10, the other end of the check valve spring is connected with a check valve pressing cap 9, a spring fixing column is arranged on the check valve pressing cap 9, and the check valve spring 8 is sleeved on the spring fixing column. The check valve pressing cap 9 is in threaded connection with the upper end of the check valve hole 20.
It should be noted that the check valve core 10 of the present embodiment is stepped, the small diameter end of the check valve core 10 is provided with a check valve core sealing ring 28, and the reduced diameter conical surface of the check valve core 10 is provided with a check valve core sealing strip 32, and preferably, the check valve core sealing strip 32 is sealed by vulcanized rubber or soft metal or metal bonding. The lower part of the valve hole 20 of the one-way valve is a stepped hole matched with the valve core 10 of the one-way valve, the reducing part of the valve hole 20 of the one-way valve is a valve seat, the valve seat is arranged at the lower part of the valve hole 20 of the one-way valve and the liquid inlet channel 24 of the closing valve, and the liquid inlet channel 24 of the closing valve is communicated with the middle part of the valve hole 20 of the one-way valve.
The check valve liquid inlet channel 23 is communicated with the bottom of the check valve hole 20, when the liquid from the check valve liquid inlet channel 23 reaches a certain pressure value, the check valve spring 8 is compressed due to the pressure of the liquid, and at the moment, the check valve core 10 moves upwards, so that the check valve liquid inlet channel 23 is communicated with the liquid inlet channel 24 of the closing valve; high pressure liquid enters the shut-off valve bore 21 through the check valve inlet passage 23, the check valve bore 20 and the shut-off valve inlet passage 24.
As shown in fig. 1 and 6, the shut-off valve body includes an upper shut-off valve spool 12 and a lower shut-off valve spool 16 connected together, preferably, the upper shut-off valve spool 12 and the lower shut-off valve spool 16 are threaded. The upper part of the upper valve core 12 of the shut-off valve is rod-shaped, the upper part of the upper valve core 12 of the shut-off valve is connected with an upper pressure cap 11 of the shut-off valve, and the upper pressure cap 11 of the shut-off valve is in threaded connection with the upper end of a valve hole 21 of the shut-off valve; a through hole is formed in the upper pressing cap 11 of the closing valve, and the inner circular surface of the upper pressing cap 11 of the closing valve is matched with the outer circular surface of the pin seat 14 of the closing valve; the inner circular surface of the shut-off valve pin seat 14 is matched with the outer circular surface of the rod-shaped end part of the shut-off valve upper valve core 12, and the shut-off valve pin seat 14 and the shut-off valve upper valve core 12 are pinned together through the shut-off valve pin 13, so that the relative positions of the shut-off valve upper valve core 12 and the shut-off valve upper pressure cap 11 are limited. The shut-off valve lower core 16 is connected to a shut-off valve lower pressure cap 17, and the shut-off valve lower pressure cap 17 is screwed to the lower end of the shut-off valve hole 21.
The end of the upper shut-off valve core 12 connected to the lower shut-off valve core 16 is stepped in a large-top and small-bottom manner, the end of the lower shut-off valve core 16 away from the upper shut-off valve core 12 is stepped in a large-top and small-bottom manner, and the shut-off valve hole 21 is a two-way stepped through hole which is matched with the upper shut-off valve core 12 and the lower shut-off valve core 16, that is, the diameter of the middle part of the shut-off valve hole 21 is smaller than the diameters of the two ends, and when the valve is installed, the upper.
The upper part of the upper valve core 12 of the shut-off valve is provided with an upper valve core sealing ring 15 of the shut-off valve, and a sealing band 33 of the upper valve core of the shut-off valve is arranged at the position of the reducing conical surface at the lower end of the upper valve core 12 of the shut-off valve. The middle part of the lower valve core 16 of the shut-off valve is provided with an upper seal ring 29 of the lower valve core of the shut-off valve and a lower seal ring 30 of the lower valve core of the shut-off valve; a shut-off valve lower spool seal band 34 is provided at the reduced diameter conical surface of the shut-off valve lower spool 16.
The closing valve hole 21 and a space channel formed by the closing valve upper valve core 12 and the closing valve lower valve core 16 form a closing valve liquid inlet cavity; the liquid inlet channel 24 of the shut-off valve and the liquid inlet channel 25 of the rubber cylinder are respectively communicated with the liquid inlet cavity of the shut-off valve, the liquid inlet channel 24 of the shut-off valve of the embodiment is arranged at the minimum diameter of the valve hole 21 of the shut-off valve, and the liquid inlet channel 25 of the rubber cylinder is arranged below the reducing conical surface at the lower end of the valve hole 21 of the shut-off valve; the closing valve lower pressure cap 17, the closing valve lower valve core 16 and the closing valve hole 21 are surrounded to form a liquid return cavity related to the closing valve, and a liquid return channel 26 is communicated with the liquid return cavity.
The two ends of the body shell 1 are provided with threads, one end of each thread is connected with the end part of the rubber cylinder of the external packer of the sleeve, and the other end of each thread is connected with the sleeve.
When the packer is used, a body shell 1 and a packer rubber cylinder are integrated to form a set of complete external packer of the casing, the external packer is connected with the casing in series and is put into a well, referring to fig. 1, an opening valve and a one-way valve are both in a closed state, a closing valve is in an open state, at the moment, an opening valve liquid inlet channel 22 and a one-way valve liquid inlet channel 23 are not communicated, a closing valve liquid inlet channel 24 and a rubber cylinder liquid inlet channel 25 are communicated, and a liquid return channel 26 is communicated with the middle lower part of the closing valve, so that no liquid enters.
Referring to fig. 2, after the casing outer packer is lowered into a working position, a high pressure pump is used for pumping well cementation fluid through a wellhead, the fluid flows through the open valve and enters the bottom of the open valve through the fluid inlet channel, upward thrust is generated on the bottom of the valve core 5 of the open valve, when the pressure of the well cementation fluid reaches a certain pressure value, the open valve pin 4 is cut off, the valve core 5 of the open valve and the elastic retaining ring 18 of the open valve move upwards, the fluid inlet channel is communicated with the fluid inlet channel 23 of the one-way valve, the fluid flows to the one-way valve through the fluid inlet channel 23 of the one-way valve, the well cementation fluid flows to the bottom of the valve core 10 of the one-way valve, the spring 8 of the one-way valve is compressed due to the pressure of the well cementation fluid, the valve core 10 of the one-way valve moves upwards, the fluid flows into the fluid inlet channel 24 of the close valve through the valve hole 20 of the one-way valve, the rubber cylinder is expanded to be tightly contacted with the well wall to form setting, the liquid of the shut-off valve is fed to work, and the well cementation liquid in the rubber cylinder enters the bottom of the shut-off valve through the liquid return channel 26.
The closed state of the shut-off valve is shown in fig. 3, the cementing fluid in the rubber cylinder enters the bottom of the lower valve core 16 of the shut-off valve through the fluid return channel 26, the cementing fluid increases the pressure at the bottom of the lower valve core 16 of the shut-off valve, the pressure at the lower ends of the lower valve core 16 of the shut-off valve and the upper valve core 12 of the shut-off valve is larger than the pressure at the upper end of the lower valve core 16 of the shut-off valve, when the pressure of the cementing fluid reaches a certain value, the shut-off valve pin 13 is sheared by the shut-off valve pin seat 14, at the moment, the upper valve core 12 of the shut-off valve and the lower valve core 16 of the shut-off valve.
At the moment, the valve core 5 and the elastic retaining ring 18 of the opening valve move downwards under the pressure of the spring 2 of the opening valve, when the valve core 5 of the opening valve reaches the lowest end of the valve hole 19 of the opening valve, the valve core is limited by the end surface at the lower end of the valve hole 19 of the opening valve, at the moment, the liquid inlet channel 23 of the one-way valve is closed, after the elastic retaining ring 18 of the opening valve moves downwards, the elastic retaining ring 18 of the opening valve moves out of the end surface at the lower end of the pressure cap 3 of the opening valve, the elastic retaining ring 18 of the opening valve recovers elasticity, after the outer diameter of the elastic retaining ring 18 of the opening valve is increased, the lower end of the pressure cap 3 of the opening valve blocks the elastic retaining ring 18 of the opening valve, the elastic retaining ring 18 of the opening valve cannot move upwards, and the elastic retaining. Meanwhile, the check valve core 10 moves down and returns to the initial position under the pressure of the check valve spring 8, so that the check valve is closed.
The invention has ingenious structural design, can ensure that the sealing ring is not damaged by shearing when the valve core is installed and works, and the valve core is sealed reliably by using the compound sealing of the sealing ring and the conical surface elastomer sealing strip; the valve core structure of the shut-off valve is in a split step shape, so that the shut-off valve is controlled by one-way differential pressure, the shut-off pressure is accurate, and the shut-off is reliable; the closing valve is processed into a bidirectional through hole, the pressing cap at the other end is replaceable, and the pressure test, the pressure monitoring and the detection are convenient.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A radial valve system of a packer valve joint is characterized by comprising a body shell, wherein an opening valve, a one-way valve and a closing valve are sequentially arranged on the body shell, a liquid inlet channel of the opening valve is arranged at the bottom of the opening valve, and liquid in a well can flow to the bottom of the opening valve through the liquid inlet channel of the opening valve; the bottom of the one-way valve is provided with a one-way valve liquid inlet channel which is communicated with the middle lower part of the opening valve; the middle upper part of the shut-off valve is provided with a shut-off valve liquid inlet channel which is communicated with the middle part of the one-way valve; the middle part of the closing valve is provided with a liquid inlet channel, the middle lower part of the closing valve is provided with a liquid return channel, and the liquid inlet channel and the liquid return channel are respectively communicated with the rubber cylinder.
2. The packer valve joint radial valving of claim 1, wherein the body housing is provided with an open valve bore, a check valve bore and a closed valve bore, the closed valve bore being a through bore, the open valve body, the check valve body and the closed valve body being received in the open valve bore, the check valve bore and the closed valve bore, respectively, to form an open valve, a check valve and a closed valve.
3. The radial valve train of a packer valve joint as recited in claim 2, wherein the opening valve body includes an opening valve spool disposed in the opening valve bore, an upper portion of the opening valve spool being rod-shaped, the upper portion of the opening valve spool being connected to an opening valve pressure cap connected to an inlet of the opening valve bore; the opening valve pressure cap is provided with a through hole, the rod-shaped upper end is provided with an opening valve elastic retaining ring, and the upper end of the opening valve spool and the opening valve elastic retaining ring are accommodated in the through hole of the opening valve pressure cap in a pressing manner; the lower part of the valve core of the opening valve is in a step shape, the lower end of the valve hole of the opening valve is a step hole matched with the lower part of the valve core of the opening valve, and an upper sealing ring of the opening valve and a lower sealing ring of the opening valve are respectively arranged at two ends of the step shape at the lower part of the valve core of the opening valve.
4. The packer valve joint radial valving of claim 3, wherein the cracking valve spool is connected to the cracking valve gland by a cracking valve pin; the upper part of the valve core of the opening valve is sleeved with an opening valve spring, one end of the opening valve spring is connected with the opening valve pressing cap, and the other end of the opening valve spring is connected with the lower part of the valve core of the opening valve in a step shape.
5. The packer valve joint radial valving of claim 2, wherein the check valve body includes a check valve spool received in the check valve bore; the one-way valve core is provided with a blind hole, a one-way valve spring is arranged in the blind hole, one end of the one-way valve spring is connected with the one-way valve core, the other end of the one-way valve spring is connected with a one-way valve pressing cap, and the one-way valve pressing cap is connected with the upper end of the one-way valve hole.
6. The radial valve train of packer valve joint as claimed in claim 5, wherein the check valve core is stepped, the small diameter end of the check valve core is provided with a check valve core sealing ring, the reducing conical surface of the check valve core is provided with a check valve core sealing belt, and the lower part of the check valve hole is a stepped hole matched with the check valve core.
7. The packer valve joint radial valving of claim 2, wherein the shut-off valve body comprises an upper shut-off valve spool and a lower shut-off valve spool connected together, the upper shut-off valve spool being connected to an upper shut-off valve pressure cap, the upper shut-off valve pressure cap being connected to an upper end of the shut-off valve bore; the lower valve core of the shut-off valve is connected with a lower pressure cap of the shut-off valve, and the lower pressure cap of the shut-off valve is connected with the lower end of a valve hole of the shut-off valve.
8. The radial valve train of the packer valve joint as recited in claim 7, wherein an end of the shut-off valve upper core connected to the shut-off valve lower core is stepped up and down, an end of the shut-off valve lower core remote from the shut-off valve upper core is stepped up and down, and the shut-off valve hole is a bi-directional stepped through hole which is matched with the shut-off valve upper core and the shut-off valve lower core.
9. The packer valve joint radial valving of claim 8, wherein the stepped surfaces of the shut-off valve upper spool and the shut-off valve lower spool are provided with sealing rings and sealing bands are provided at the stepped, reduced diameter tapers of the shut-off valve upper spool and the shut-off valve lower spool.
10. The packer valve connector radial valve train of claim 8, wherein the minimum diameter of the shut-off valve spool bore communicates with the shut-off valve inlet passage; the lower part of the reducing conical surface at the lower end of the valve hole of the closing valve is communicated with the liquid inlet channel of the rubber cylinder; the lower pressure cap of the shut-off valve, the lower valve core of the shut-off valve and the valve hole of the shut-off valve are surrounded to form a liquid return cavity related to the shut-off valve, and the liquid return channel is communicated with the liquid return cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110365838.0A CN112878958A (en) | 2021-04-06 | 2021-04-06 | Radial valve system of packer valve joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110365838.0A CN112878958A (en) | 2021-04-06 | 2021-04-06 | Radial valve system of packer valve joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112878958A true CN112878958A (en) | 2021-06-01 |
Family
ID=76040797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110365838.0A Pending CN112878958A (en) | 2021-04-06 | 2021-04-06 | Radial valve system of packer valve joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112878958A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB924231A (en) * | 1960-03-14 | 1963-04-24 | Baker Oil Tools Inc | Mechanically set well packer |
| US4345648A (en) * | 1980-02-11 | 1982-08-24 | Bj-Hughes, Inc. | Inflatable packer system |
| USRE32345E (en) * | 1982-08-13 | 1987-02-03 | Completion Tool Company | Packer valve arrangement |
| CN2816343Y (en) * | 2005-06-20 | 2006-09-13 | 中国石油天然气集团公司 | Axial self-locking type packer |
| CN102747979A (en) * | 2012-08-01 | 2012-10-24 | 山东胜油固井工程技术有限公司 | Bidirectional self-locking type external casing packer |
| CN202810774U (en) * | 2012-08-01 | 2013-03-20 | 山东胜油固井工程技术有限公司 | Bidirectional self-locking outer packer of casing |
| CN202832436U (en) * | 2012-08-16 | 2013-03-27 | 中国石油天然气股份有限公司 | Directional well stratified water injection check valve |
| CN104153741A (en) * | 2014-08-26 | 2014-11-19 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Control valve system for external casing packer |
| CA2871925A1 (en) * | 2013-11-26 | 2015-05-26 | Weatherford/Lamb, Inc. | Differential pressure indicator for downhole isolation valve |
| RU2568459C1 (en) * | 2014-10-21 | 2015-11-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Device for well cleanout from paraffin deposits |
| CN108061070A (en) * | 2017-12-19 | 2018-05-22 | 宁波文泽机电技术开发有限公司 | A kind of pressure-control valve |
| CN209179741U (en) * | 2018-09-07 | 2019-07-30 | 中国石油化工股份有限公司 | Anti-backflow linker |
| CN218376413U (en) * | 2021-04-06 | 2023-01-24 | 任丘市恒升石油技术有限公司 | Radial valve system of packer valve joint |
-
2021
- 2021-04-06 CN CN202110365838.0A patent/CN112878958A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB924231A (en) * | 1960-03-14 | 1963-04-24 | Baker Oil Tools Inc | Mechanically set well packer |
| US4345648A (en) * | 1980-02-11 | 1982-08-24 | Bj-Hughes, Inc. | Inflatable packer system |
| USRE32345E (en) * | 1982-08-13 | 1987-02-03 | Completion Tool Company | Packer valve arrangement |
| CN2816343Y (en) * | 2005-06-20 | 2006-09-13 | 中国石油天然气集团公司 | Axial self-locking type packer |
| CN102747979A (en) * | 2012-08-01 | 2012-10-24 | 山东胜油固井工程技术有限公司 | Bidirectional self-locking type external casing packer |
| CN202810774U (en) * | 2012-08-01 | 2013-03-20 | 山东胜油固井工程技术有限公司 | Bidirectional self-locking outer packer of casing |
| CN202832436U (en) * | 2012-08-16 | 2013-03-27 | 中国石油天然气股份有限公司 | Directional well stratified water injection check valve |
| CA2871925A1 (en) * | 2013-11-26 | 2015-05-26 | Weatherford/Lamb, Inc. | Differential pressure indicator for downhole isolation valve |
| CN104153741A (en) * | 2014-08-26 | 2014-11-19 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Control valve system for external casing packer |
| RU2568459C1 (en) * | 2014-10-21 | 2015-11-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Device for well cleanout from paraffin deposits |
| CN108061070A (en) * | 2017-12-19 | 2018-05-22 | 宁波文泽机电技术开发有限公司 | A kind of pressure-control valve |
| CN209179741U (en) * | 2018-09-07 | 2019-07-30 | 中国石油化工股份有限公司 | Anti-backflow linker |
| CN218376413U (en) * | 2021-04-06 | 2023-01-24 | 任丘市恒升石油技术有限公司 | Radial valve system of packer valve joint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4441558A (en) | Valve | |
| US4494608A (en) | Well injection system | |
| US6213217B1 (en) | Gas operated apparatus and method for maintaining relatively uniformed fluid pressure within an expandable well tool subjected to thermal variants | |
| CN208473812U (en) | Spring compression sealing preset type underground throttle and throwing tool | |
| CN204040996U (en) | Smart well passes through formula packer | |
| US7699111B2 (en) | Float collar and method | |
| CN218376413U (en) | Radial valve system of packer valve joint | |
| CN209799937U (en) | Separate-layer water injection device of casing damage repair well | |
| CN110259408A (en) | A kind of oil/gas well packing completion system | |
| CN207315247U (en) | A kind of self-priming float collar | |
| CN107120072B (en) | A kind of steel pipe type cable traversing device | |
| CN112878958A (en) | Radial valve system of packer valve joint | |
| CN205047188U (en) | Deblocking packer can be sealed by repeated seat to motion of non - tubular column | |
| CN219061594U (en) | Underground air release valve | |
| CN214616459U (en) | Axial stepped valve system of packer valve joint | |
| CN214616458U (en) | Packer valve joint valve system | |
| CN219176305U (en) | Low-pressure-difference sealing-assisting valve plate assembly for underground safety valve | |
| CN201031647Y (en) | Stop production well head packer | |
| CN105221100B (en) | A kind of non-tubing string motion is repeatable to set deblocking packer | |
| CN207177815U (en) | Oil-well pump well casing protection packer | |
| CN117846525B (en) | Bridge plug type through-oil-pipe expansion packer, and sending tool and sending method thereof | |
| CN114439445A (en) | Sand prevention sliding sleeve | |
| CN221053658U (en) | Open hole packer | |
| CN117722154B (en) | Bypass open hole packer for horizontal well sub-bin filling | |
| US3417774A (en) | Retrievable gas lift valve assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |