CN114645951B - Mechanical downward-pressing gate valve opening and closing device - Google Patents
Mechanical downward-pressing gate valve opening and closing device Download PDFInfo
- Publication number
- CN114645951B CN114645951B CN202011491201.8A CN202011491201A CN114645951B CN 114645951 B CN114645951 B CN 114645951B CN 202011491201 A CN202011491201 A CN 202011491201A CN 114645951 B CN114645951 B CN 114645951B
- Authority
- CN
- China
- Prior art keywords
- pressing
- sleeve
- short section
- nipple
- shutter
- 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.)
- Active
Links
- 238000003825 pressing Methods 0.000 title claims abstract description 98
- 210000002445 nipple Anatomy 0.000 claims abstract description 49
- 230000009471 action Effects 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 6
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a mechanical pressing type gate valve opening and closing device, which comprises: pressing down the shell; the pressing sleeve is concentrically arranged in the pressing shell and fixedly connected with the pressing shell through pressing shear pins; the lower pressing nipple is fixedly connected to the lower end of the lower pressing shell; the gate valve unit comprises an upper short section, a valve plate seat fixedly connected to the lower end of the upper short section and a lower short section arranged in the upper short section, wherein the upper short section is provided with a mounting hole penetrating through the side wall, a gate plate is mounted in the mounting hole, and the gate plate is connected with the valve plate seat through a torsion driving assembly; the lower pressing short section is fixedly connected with the upper short section through the first shear pin, the lower pressing sleeve is used for cutting off the lower pressing shear pin and the first shear pin, the lower pressing short section is enabled to descend to the bottom of the valve plate seat, the lower pressing sleeve is further lifted to an initial position, and therefore the flashboard can rotate under the action of the torsion driving assembly to close the flashboard valve unit.
Description
Technical Field
The invention belongs to the technical field of oil-gas field drilling and completion, and particularly relates to a mechanical pressing type gate valve opening and closing device.
Background
In the process of oil and gas field well drilling and completion operation, the problem of underground overflow is frequently encountered, and the underground overflow treatment is usually carried out by adopting an underground blowout preventer in the prior art. The downhole blowout preventer is connected with the drilling tool and rotates along with the drilling tool, and the downhole blowout preventer can be matched with the wellhead blowout preventer to treat downhole overflow. The existing underground blowout preventer packer unit adopts two forms of a compression type rubber cylinder and an expansion type rubber cylinder, and a ball throwing pressure-holding mode is generally adopted for the expansion type rubber cylinder to establish pressure holding conditions underground. However, because a certain time delay is required for pitching, the treatment efficiency of the underground overflow problem is low, and the underground overflow problem cannot be rapidly treated.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a mechanical pressing type gate valve opening and closing device, which can establish a pressure holding condition through a mechanical pressing mode to perform packer inflation sealing so as to quickly solve the problem of underground overflow.
To this end, according to the present invention, there is provided a mechanical pressing type shutter valve opening and closing device including: a cylindrical pressing-down housing; the pressing sleeve is concentrically arranged in the pressing shell and fixedly connected with the pressing shell through pressing shear pins; the lower pressing nipple is fixedly connected to the lower end of the lower pressing shell; the gate valve unit comprises an upper short section, a valve plate seat fixedly connected to the lower end of the upper short section and a lower short section arranged in the upper short section, wherein the upper short section is provided with a mounting hole penetrating through the side wall, a gate plate is mounted in the mounting hole, and the gate plate is connected with the valve plate seat through a torsion driving assembly; the lower pressing short section is fixedly connected with the upper short section through a first shear pin, the upper end face of the lower pressing short section is in contact with the lower end face of the lower pressing sleeve in an initial state, the lower pressing sleeve is mechanically pressed down to shear the lower pressing short section and the first shear pin, the lower pressing short section is enabled to descend to the bottom of the valve plate seat, the lower pressing sleeve is lifted to an initial position, and therefore the flashboard can rotate under the action of the torsion driving assembly to close the flashboard valve unit.
In one embodiment, the torsion driving assembly comprises a valve plate shaft and a torsion spring, wherein the flashboard is in rotary connection with the valve plate seat through the valve plate shaft and can rotate around the valve plate shaft under the action of the torsion spring.
In one embodiment, the gate valve unit further comprises an outer sleeve arranged in the pressing shell, a first shoulder with a downward end face is arranged on the inner wall of the pressing shell, and the outer sleeve is axially and fixedly arranged between the upper end face of the pressing nipple wire and the first shoulder.
In one embodiment, the upper nipple is fixedly connected to the outer sleeve by a second shear, the second shear having a greater shear value than the first shear.
In one embodiment, the inner wall of the lower end of the valve plate seat is provided with a limiting shoulder extending radially inwards, and the pressing nipple can descend to the limiting shoulder to form axial limiting.
In one embodiment, the side wall of the valve plate seat is provided with a plurality of first liquid passing holes uniformly distributed in the circumferential direction, the side wall of the pressing nipple is provided with a plurality of second liquid passing holes uniformly distributed in the circumferential direction, and when the pressing nipple descends to sit on the limiting shoulder, the second liquid passing holes are correspondingly communicated with the first liquid passing holes to form a pressure transmission channel.
In one embodiment, a second shoulder with an upward end face is arranged on the inner wall of the lower pressing nipple wire.
In one embodiment, the outer diameter of the valve plate seat is smaller than the inner diameter of the pressing nipple wire, when the upper end pressure of the flashboard reaches a preset value after the valve plate unit is closed, the upper nipple joint shears the second shear pin, the valve plate unit descends to sit on the second shoulder, a gap channel is formed between the valve plate seat and the radial direction of the pressing nipple wire, and the gap channel is communicated with the pressure transmission channel, so that the upper channel and the lower channel of the flashboard are communicated to reform a liquid passing channel.
In one embodiment, the outer wall of the pressing sleeve is provided with a plurality of transmission keys extending along the axial portion, the transmission keys are uniformly distributed in the circumferential direction, the inner wall of the pressing shell is provided with a plurality of transmission key grooves, and the pressing sleeve and the pressing shell are connected with the transmission key grooves in an adaptive manner through the transmission keys.
In one embodiment, the upper end fixedly connected with safety sleeve of casing pushes down, safety sleeve's upper end inner wall is equipped with terminal surface spacing step down, push down telescopic outer wall and be equipped with radial protruding, in the initial state, radial protruding with spacing step contact and to push down the sleeve forms the axial spacing.
Compared with the prior art, the invention has the advantages that:
according to the mechanical down-pressure type gate valve opening and closing device, in the drilling process, after overflow is found, a drilling tool is lowered, a pressure holding condition is established in a mechanical down-pressure mode, and further packer expansion sealing is carried out, so that the underground overflow can be rapidly treated, the underground overflow treatment efficiency is greatly improved, and the safety of a wellhead is remarkably improved. Simultaneously, through adopting transmission keyway structure, can transmit the moment of torsion. In addition, when the pipe internal circulation is needed, the gate valve unit can enter the pressing short section to change the wire through the pressure holding, and then the pipe internal circulation is carried out, so that the circulating channel is reestablished underground, and the underground operation efficiency can be remarkably improved.
Drawings
The present invention will be described below with reference to the accompanying drawings.
Fig. 1 shows a structure of a mechanical push-down type gate valve opening and closing device according to the present invention.
Fig. 2 is a cross-sectional view taken along line A-A in fig. 1.
Fig. 3 shows a structure of a shutter valve unit in the mechanical push-down type shutter valve opening and closing device shown in fig. 1.
Fig. 4 shows the mounting structure of the torsion spring and the shutter shaft in the shutter valve unit shown in fig. 3.
Fig. 5 and 6 show the closing process and the closing principle of the shutter valve unit.
Fig. 7 shows a state of the mechanical pressing type shutter valve opening and closing device according to the present invention.
In this application, all of the figures are schematic drawings which are intended to illustrate the principles of the invention and are not to scale.
Detailed Description
The invention is described below with reference to the accompanying drawings.
In the present application, the end of the mechanical push-down type gate valve opening/closing device according to the present invention that is close to the wellhead when lowered into the wellbore is defined as an upper end or the like, and the end that is far from the wellhead is defined as a lower end or the like.
Fig. 1 shows a structure of a mechanical push-down type shutter valve opening and closing device 100 according to the present invention. As shown in fig. 1, the mechanical push-down type shutter valve opening and closing device 100 includes a cylindrical push-down housing 1, a push-down sleeve 2 concentrically arranged in the push-down housing 1, a push-down nipple wire 5 fixedly connected to a lower end of the push-down housing 1, and a shutter valve unit 6 provided in the push-down housing 1. The upper end of the pressing sleeve 2 is used for being connected with a packer or a running tool, and the lower end of the pressing nipple wire 5 is used for being connected with a lower pipe string. The gate valve unit 6 is initially in an open state, and the gate valve unit 6 can be closed by mechanically pressing down the sleeve 2 and then lifting up, so that a sealing condition is formed in the pipe, and the pressure in the pipe is increased by the liquid inlet in the pipe string, so that conditions are provided for the subsequent setting of the packer.
As shown in fig. 1, the upper end of the push-down housing 1 is fixedly connected with a safety sleeve 3. In one embodiment, the safety sleeve 3 is fixedly connected to the push-down housing 1 by means of threads. The upper end inner wall of the safety sleeve 3 is provided with a limit step 31 with an end face facing downwards, the lower end face of the limit step 31 is opposite to the upper end face of the pressing shell 1, and a stroke space is reserved between the axial directions. A radial projection 22 extending radially outward is provided on the outer wall surface of the push-down sleeve 2. The pressing sleeve 2 is fixedly connected with the pressing housing 1 through the pressing shear pin 4, and in an initial state, the upper end face of the radial protrusion 22 is in contact with the lower end face of the limit step 31. Thereby, the axial limit is formed to the push-down sleeve 2 by the limit step 31 of the safety sleeve 3 being in contact engagement with the radial projection 22 of the push-down sleeve 2, thereby preventing the push-down sleeve 2 from being separated from the safety sleeve 3. After the push-down shear pin 4 is sheared, the push-down sleeve 2 is axially movable relative to the push-down housing 1, and the radial projection 22 moves in the stroke space between the limit step 31 and the upper end surface of the push-down housing 1. Thereby, the axial movement limit is formed on the pressing sleeve 2 by the limit step 31 and the upper end face of the pressing housing 1, so that the pressing sleeve 2 moves within a certain stroke range.
As shown in fig. 2, according to an embodiment of the present invention, the outer wall surface of the push sleeve 2 is provided with a plurality of radially outwardly extending transmission keys 21, and the plurality of transmission keys 21 are disposed to extend in the axial direction, are uniformly distributed in the circumferential direction, and are located at the lower ends of the radial protrusions 22. Meanwhile, a plurality of transmission key grooves 12 are formed in the inner wall of the pressing shell 1, and transmission keys 21 on the pressing sleeve 2 can be installed in a matched mode with the transmission key grooves 12 on the pressing shell 1, so that the pressing sleeve 2 and the pressing shell 1 form a transmission key groove structure. From this, can transmit the moment of torsion through pushing down the transmission keyway structure between sleeve 2 and the casing 1 that pushes down to through pushing down nipple joint and becoming silk 5 and transmitting to lower part connecting piece, and then transmitting to lower part pipe string.
In addition, in order to ensure sealing performance between the push-down sleeve 2 and the push-down housing 1, a seal may be provided between the connection surfaces of the push-down sleeve 2 and the push-down housing 1. The seal is preferably provided at the lower end of the push down shear pin 4.
As shown in fig. 1, a second shoulder 51 facing upward is provided on the inner wall of the push-down nipple wire 5. In one embodiment, the pressing nipple variable wire 5 is fixedly connected with the lower end of the pressing shell 1 through threads. And, push down the up end radial inward extension of nipple joint change silk 5 to form the terminal surface at the junction of pushing down nipple joint change silk 5 and pushing down casing 1 and upwards installation step. The function of the second shoulder 51 and the mounting step will be described below.
In one embodiment, the upper end of the push down sleeve 2 is configured as a conical connection, the outer surface of which is provided with threads for connecting a packer or running tool. Likewise, the lower end of the push-down nipple variable wire 5 is configured as a conical connecting buckle, and the outer surface of the conical connecting buckle is provided with threads for connecting other lower pipe strings. The connection structure of the pressing sleeve 2 and the pressing short section variable wire 5 is convenient and quick to connect, and the connection is stable and reliable, thereby being beneficial to improving the installation efficiency.
As shown in fig. 3, the gate valve unit 6 includes an upper nipple 61, a valve plate seat 62, a lower nipple 63, a gate 64, and an outer sleeve 67. The inner wall of the push-down shell 1 is also provided with a first shoulder 11 facing downwards, the first shoulder 11 is opposite to the mounting step, and a mounting space is formed between the mounting shoulder and the axial direction of the mounting step. The outer sleeve 67 is mounted in the mounting space with the upper and lower ends of the outer sleeve 67 in contact with the first shoulder 11 and the mounting step, respectively, whereby the outer sleeve 67 forms an axially fixed mount. The upper nipple 61 is fixedly connected with the outer sleeve 67 by the second shear pin 8, and in the initial state, the upper end surface of the upper nipple 61 is in contact with the first shoulder 11. The pressing nipple 63 is fixedly connected with the upper nipple 61 through the first shear pin 7, and in the initial state, the upper end face of the pressing nipple 63 is in contact with the lower end face of the pressing sleeve 2. The shear value of the second shear pin 8 is greater than the shear value of the first shear pin 7.
According to one embodiment of the present invention, the lower end of the push-down nipple 63 is fixedly connected to the valve plate seat 62 by a stepped connection joint and threads. The pressing-down nipple 63 is cylindrical, and mounting holes are cut in a side wall region of the pressing-down nipple 63, and preferably, the mounting holes occupy a quarter in the circumferential direction. The mounting holes are used for mounting the setting shutter 64. As shown in fig. 4, the shutter 64 is connected to the valve plate seat 62 by a torsion drive assembly. The torsion drive assembly includes a valve plate shaft 65 and a torsion spring 66, the valve plate shaft 65 being disposed along a tangential direction of a circle formed at the outer periphery of the valve plate seat 62. Shutter 64 is rotatably coupled to valve plate holder 62 by a valve plate shaft 65 and is rotatable about valve plate shaft 65 by a torsion spring 66.
During assembly, the shutter 64 is connected to the valve plate seat 62 by a shutter shaft 65, a torsion spring 66. After the shutter valve unit 6 is assembled, the shutter valve unit 6 is in a closed state under the action of the torsion spring 66, the downward-pressing short section 63 is installed from bottom to top to form radial support, so that the shutter 64 is opened, and at this time, the torsion spring 66 is in a torsion stress state, and the shutter valve unit 6 is in an initial open state.
After the assembly of the gate valve unit 6 is completed, the upper end of the push-down sleeve 2 is used for being connected with a packer or a running tool, and the lower end of the push-down nipple wire 5 is used for being connected with a lower pipe string through a connecting piece (not shown). The mechanical push-down type gate valve opening/closing device 100 is installed at a position above the neutral point, and when lifting the pipe string, the radial protrusion 22 of the push-down sleeve 2 and the limit step 31 of the safety sleeve 3 bear the weight of the bottom pipe string. The first shear pin 7 is only subjected to a pressing force and is not subjected to a pulling force and torsion.
According to the present invention, as shown in FIG. 3, the inner wall of the lower end of the valve plate seat 62 is provided with a radially inwardly extending limit shoulder 622. The pushing nipple 63 moves to the limit shoulder 622 in a mechanical pushing manner, so that the lower end surface of the pushing nipple 63 sits on the limit shoulder 622, and an axial limit is formed on the pushing nipple 63. A plurality of first liquid passing holes 621 are circumferentially uniformly distributed on the side wall of the valve plate seat 62, and the first liquid passing holes 621 are arranged on the inner side of the limit shoulder 622 in the axial direction. A plurality of second liquid passing holes 631 are uniformly distributed in the circumferential direction on the side wall of the pressing nipple 63. When the pressing nipple 63 descends to sit on the limit shoulder 622, the second liquid through hole 631 and the first liquid through hole 621 correspondingly communicate to form a pressure transmission channel. The function of the pressure transfer channel will be described below.
In the actual operation of the mechanical push-down type gate valve opening/closing device 100 according to the present invention, the mechanical push-down type gate valve opening/closing device 100 is first connected to the string, and the mechanical push-down type gate valve opening/closing device 100 is pushed down into the well bore, and the weight of the string is released after the mechanical push-down type gate valve opening/closing device 100 is pushed down into the well bottom, so that the push-down sleeve 2 and the push-down housing 1 are relatively moved, and the push-down shear pins 4 and the first shear pins 7 are simultaneously sheared, so that the push-down nipple 63 is moved down to the limit shoulder 622 seated on the bottom of the valve plate seat 62. After that, the push-up tube string moves the push-down sleeve 2 upward until the upper end surface of the radial protrusion 22 of the push-down sleeve 2 contacts the limit step 31 of the safety sleeve 3 to return to the initial position, which makes the shutter 64 have a movement space, the shutter 64 rotates 90 degrees around the shutter shaft 65 under the action of the torsion spring 66, the shutter 64 contacts the shutter plate seat 62, and the upper port of the shutter plate seat 62 is blocked by the shutter plate 64, thereby closing the shutter valve unit 6. Therefore, after the gate valve unit 6 shears the down-pressing shear pin 4 and the first shear pin 7 through mechanical down-pressing and then lifts up, the gate 64 closes the gate valve unit 6 under the action of the torsion spring 66, so that the in-pipe pressure of the liquid inlet in the pipe string is increased, and conditions are provided for the subsequent packer setting. Fig. 5 and 6 show the closing process and principle of the shutter valve unit 6.
In one embodiment, rubber is vulcanized on the upper end surface of the valve plate seat 62, which enables the shutter 64 to form an effective seal after contacting the valve plate seat 62, thereby improving the sealing performance of the shutter valve unit 6 and enhancing the reliability of the closing performance of the mechanical pressing-down shutter valve opening and closing device 100.
After the valve plate unit 6 is closed, when the pressure of the liquid in the channel at the upper end of the flashboard 64 reaches a preset value, the upper short section 61 shears off the second shear pin 8, and the valve plate unit 6 descends until the lower end face of the valve plate seat 62 sits on the second shoulder 51 of the lower short section wire change 5. According to the present invention, the outer diameter of the valve plate seat 62 is set smaller than the inner diameter of the push-down nipple wire 5. Thereby, a gap channel 9 is formed between the valve plate seat 62 and the radial direction of the pressing-down nipple wire 5, the upper end of the gap channel 9 is communicated with the channel at the upper end of the gate plate 64, and the lower end of the gap channel 9 is communicated with the channel at the lower end of the gate plate 64 through the pressure transmission channel, so that a liquid passing channel is formed in the mechanical pressing-down gate valve opening and closing device 100 again. Thus, the mechanical pressing type shutter valve opening/closing device 100 can reestablish the circulation path in the well, and the subsequent work can be continued. Fig. 7 is a schematic diagram showing the mechanical pressing type shutter valve opening and closing device 100 in a closed state, wherein an arrow in fig. 7 indicates a flow direction of the liquid along the liquid passage.
According to the mechanical pressing type gate valve opening and closing device 100 disclosed by the invention, in the drilling process, a pressure holding condition can be established by lowering a drilling tool and adopting a mechanical pressing mode after overflow is found, and further packer expansion sealing is carried out, so that the underground overflow can be rapidly treated, the underground overflow treatment efficiency is greatly improved, and the safety of a wellhead is obviously enhanced. Simultaneously, through adopting transmission keyway structure, can transmit the moment of torsion. In addition, when the pipe internal circulation is needed, the gate valve unit 6 can be downwards moved to the bottom of the pressure nipple wire changing 5 through pressure holding, so that the purpose of reestablishing a circulation channel in the pit and carrying out the pipe internal circulation again is achieved, and the underground operation efficiency can be remarkably improved.
Finally, it should be noted that the above description is only of a preferred embodiment of the invention and is not to be construed as limiting the invention in any way. Although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the techniques described in the foregoing examples, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A mechanical depression type shutter valve opening and closing device, comprising:
a cylindrical pressing-down housing;
the pressing sleeve is concentrically arranged in the pressing shell and fixedly connected with the pressing shell through pressing shear pins;
the lower pressing nipple is fixedly connected to the lower end of the lower pressing shell; and
the gate valve unit comprises an upper short section, a valve plate seat fixedly connected to the lower end of the upper short section and a lower short section arranged in the upper short section, wherein the upper short section is provided with a mounting hole penetrating through the side wall, a gate plate is arranged in the mounting hole, and the gate plate is connected with the valve plate seat through a torsion driving assembly;
wherein the lower pressing nipple is fixedly connected with the upper nipple through a first shear pin, the upper end face of the lower pressing nipple is in contact with the lower end face of the lower pressing sleeve in an initial state, the lower pressing sleeve is mechanically pressed down to shear the lower pressing shear pin and the first shear pin, the lower pressing nipple is enabled to descend to the bottom of the valve plate seat, the lower pressing sleeve is lifted up to an initial position, the flashboard can rotate under the action of the torsion driving assembly to close the flashboard valve unit,
the gate valve unit also comprises an outer sleeve arranged in the lower pressing shell, the upper short section is fixedly connected with the outer sleeve through a second shear pin, the shearing value of the second shear pin is larger than that of the first shear pin,
the inner wall of the lower end of the valve plate seat is provided with a limit shoulder extending inwards in a radial direction, the downward pressing nipple can descend to the limit shoulder to form axial limit,
the side wall of the valve plate seat is provided with a plurality of first liquid passing holes which are uniformly distributed in the circumferential direction, the side wall of the pressing nipple is provided with a plurality of second liquid passing holes which are uniformly distributed in the circumferential direction, when the pressing nipple descends to be seated on the limiting shoulder, the second liquid passing holes are correspondingly communicated with the first liquid passing holes to form a pressure transmission channel,
the inner wall of the lower pressing nipple wire change is provided with a second shoulder with an upward end face,
the outer diameter of the valve plate seat is smaller than the inner diameter of the variable wire of the pressing short section,
when the pressure of the upper end of the flashboard reaches a preset value after the flashboard valve unit is closed, the upper short section shears the second shear pin, the flashboard valve unit descends to be seated on the second shoulder, a gap channel is formed between the valve plate seat and the radial direction of the wire change of the lower short section, and the gap channel is communicated with the pressure transmission channel, so that the upper channel and the lower channel of the flashboard are communicated to reform a liquid passing channel.
2. The mechanical hold-down shutter valve opening and closing device according to claim 1, wherein the torsion driving assembly includes a shutter shaft and a torsion spring, and the shutter is rotatably connected to the shutter seat through the shutter shaft and is rotatable around the shutter shaft by the torsion spring.
3. The mechanical pressing-down type shutter valve opening and closing device according to claim 1 or 2, wherein a first shoulder with a downward end face is provided on an inner wall of the pressing-down housing, and the outer sleeve is fixedly installed between an upper end face of the pressing-down nipple wire and the first shoulder in an axial direction.
4. The mechanical pressing-down type shutter valve opening and closing device according to claim 1, wherein a plurality of transmission keys extending along an axial portion are provided on an outer wall of the pressing-down sleeve, the plurality of transmission keys are uniformly distributed in a circumferential direction, a plurality of transmission key grooves are provided on an inner wall of the pressing-down housing, and the pressing-down sleeve and the pressing-down housing are connected with the transmission key grooves in an adaptive manner through the transmission keys.
5. The mechanical pressing-down type gate valve opening and closing device according to claim 1, wherein the upper end of the pressing-down casing is fixedly connected with a safety sleeve, a limiting step with a downward end face is arranged on the inner wall of the upper end of the safety sleeve, a radial protrusion is arranged on the outer wall of the pressing-down sleeve, and in an initial state, the radial protrusion contacts with the limiting step to axially limit the pressing-down sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011491201.8A CN114645951B (en) | 2020-12-17 | 2020-12-17 | Mechanical downward-pressing gate valve opening and closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011491201.8A CN114645951B (en) | 2020-12-17 | 2020-12-17 | Mechanical downward-pressing gate valve opening and closing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114645951A CN114645951A (en) | 2022-06-21 |
| CN114645951B true CN114645951B (en) | 2024-02-09 |
Family
ID=81991215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011491201.8A Active CN114645951B (en) | 2020-12-17 | 2020-12-17 | Mechanical downward-pressing gate valve opening and closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114645951B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3051243A (en) * | 1958-12-12 | 1962-08-28 | George G Grimmer | Well tools |
| US3252516A (en) * | 1962-11-05 | 1966-05-24 | Baker Oil Tools Inc | Hydraulically operated well packer apparatus |
| CN2567336Y (en) * | 2002-01-09 | 2003-08-20 | 东营市东营区创新科技有限公司 | Multifunction well head device |
| CN101812981A (en) * | 2010-04-17 | 2010-08-25 | 西南石油大学 | Mechanical underground all-in-one blowout preventer |
| CN201902192U (en) * | 2010-06-02 | 2011-07-20 | 西南石油大学 | Float valve type underground blowout preventer |
| CN202325378U (en) * | 2011-10-18 | 2012-07-11 | 中国石油化工股份有限公司 | Down-hole isolation device |
| CN203175455U (en) * | 2013-04-02 | 2013-09-04 | 濮阳中石集团有限公司 | Well shut-in device with internal thread well shut-in pipe nipple |
| CN203383772U (en) * | 2013-07-05 | 2014-01-08 | 新疆华油油气工程有限公司 | Packer with safety valve |
| RU2651860C1 (en) * | 2017-02-02 | 2018-04-24 | Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" | Subsurface safety valve |
| CN111101893A (en) * | 2019-12-28 | 2020-05-05 | 中海油能源发展股份有限公司 | Safety valve of underground oil well pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6997252B2 (en) * | 2003-09-11 | 2006-02-14 | Halliburton Energy Services, Inc. | Hydraulic setting tool for packers |
-
2020
- 2020-12-17 CN CN202011491201.8A patent/CN114645951B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3051243A (en) * | 1958-12-12 | 1962-08-28 | George G Grimmer | Well tools |
| US3252516A (en) * | 1962-11-05 | 1966-05-24 | Baker Oil Tools Inc | Hydraulically operated well packer apparatus |
| CN2567336Y (en) * | 2002-01-09 | 2003-08-20 | 东营市东营区创新科技有限公司 | Multifunction well head device |
| CN101812981A (en) * | 2010-04-17 | 2010-08-25 | 西南石油大学 | Mechanical underground all-in-one blowout preventer |
| CN201902192U (en) * | 2010-06-02 | 2011-07-20 | 西南石油大学 | Float valve type underground blowout preventer |
| CN202325378U (en) * | 2011-10-18 | 2012-07-11 | 中国石油化工股份有限公司 | Down-hole isolation device |
| CN203175455U (en) * | 2013-04-02 | 2013-09-04 | 濮阳中石集团有限公司 | Well shut-in device with internal thread well shut-in pipe nipple |
| CN203383772U (en) * | 2013-07-05 | 2014-01-08 | 新疆华油油气工程有限公司 | Packer with safety valve |
| RU2651860C1 (en) * | 2017-02-02 | 2018-04-24 | Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" | Subsurface safety valve |
| CN111101893A (en) * | 2019-12-28 | 2020-05-05 | 中海油能源发展股份有限公司 | Safety valve of underground oil well pump |
Non-Patent Citations (1)
| Title |
|---|
| 连续循环钻井技术装备与应用;张微;李英明;王佳露;李彬;曾艳春;;中外能源(第08期);第44-47页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114645951A (en) | 2022-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7918280B2 (en) | Radial indexing communication tool and method for subsurface safety valve with communication component | |
| US8327945B2 (en) | Remotely operated drill pipe valve | |
| CN104499993B (en) | Dual-flap-valve type downhole safety valve | |
| CN102817575A (en) | Downhole blow-out preventer with automatic controlling and anchoring function | |
| CN114645951B (en) | Mechanical downward-pressing gate valve opening and closing device | |
| CN108590578A (en) | A kind of repeatable switching sliding sleeve mechanism for sliding sleeve of bushing | |
| CN115095303B (en) | Underground liquid control device and using method thereof | |
| US6220359B1 (en) | Pump through safety valve and method | |
| CN114439445B (en) | Sand prevention sliding sleeve | |
| CN116733421A (en) | Hydraulic ball throwing device for well drilling coring and well drilling coring process | |
| US20240003215A1 (en) | Downhole blowout preventer and blowout prevention operation method | |
| CN212508209U (en) | Soluble end cap of pump sending | |
| RU207559U1 (en) | Packer for pipeless operation of oil wells with a borehole pump | |
| CN106837242B (en) | Blowout preventer for oil well | |
| CN111764865A (en) | Soluble end cap of pump sending | |
| US8973663B2 (en) | Pump through circulating and or safety circulating valve | |
| CN107587860B (en) | A kind of double sliding sleeves based on compression packer set locking mechanism | |
| CN114427379B (en) | Temporary plugging type well cementation fracturing sliding sleeve and construction method | |
| CN113802994A (en) | Suspension device | |
| CN109695435B (en) | Underground safety valve and use method thereof | |
| RU204960U1 (en) | SHUT-OFF VALVE FOR UNDERGROUND WELL REPAIR | |
| RU2301321C2 (en) | Anchor packer | |
| CN217518631U (en) | Underground throttling device for coiled tubing | |
| CN113846990B (en) | Stage cementing device | |
| CN219220366U (en) | Ball-throwing-free oil sleeve annulus communication device for underground operation |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |