CN105587284B - Blowout prevention method when oil pumping well head blowout hookup and unlatching shaft mouth operation - Google Patents
Blowout prevention method when oil pumping well head blowout hookup and unlatching shaft mouth operation Download PDFInfo
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- CN105587284B CN105587284B CN201410654277.6A CN201410654277A CN105587284B CN 105587284 B CN105587284 B CN 105587284B CN 201410654277 A CN201410654277 A CN 201410654277A CN 105587284 B CN105587284 B CN 105587284B
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Abstract
A kind of blowout prevention method when the present invention provides oil pumping well head blowout hookup and opens shaft mouth operation, including blowout prevention nipple, the top of the blowout prevention nipple are removably equipped with blowout-preventing pipe plug；The blowout prevention nipple bottom end is equipped with the first connector for being removably connected with production tree upper end, and the blowout prevention nipple inner cavity matches with the sucker rod in the production tree, sucker rod hanger is equipped in the blowout prevention nipple, on the blowout prevention nipple inner wall, and step is equipped at the first distance of bottom end, the sucker rod hanger is supported on the step, the sucker rod hanger bottom end, which is formed with, can be plugged into the sucker rod, and the plug being connect with the sucker rod, blowout prevention method when oil pumping well head blowout hookup provided by the invention and unlatching shaft mouth operation can guarantee in replacement oil pumping polish rod, just squeeze de-plugging, when well-flushing etc. need to open shaft mouth operation, prevent blowout, to achieve the purpose that blowout prevention, device is simple, it is easy to operate, operation safety.
Description
Technical field
The present invention relates to oil field blowout prevention technology more particularly to a kind of oil pumping well head blowout hookup and open shaft mouth operation
When blowout prevention method.
Background technique
With continually developing for oil field, stratum energy is gradually insufficient, and development scheme gradually switchs to rod-pumped well by flowing well,
And fatigue corrosion etc. easily occurs after pumping well polish rod, double rubber gates and high pressure sealing device longtime running, it is therefore necessary to periodically inspection
It looks into, or even replacement.In addition, occurring viscous crude, foreign matter (wax, asphalitine, greasy filth, oil often since crude oil property more becomes complicated
Sand) etc. on return blocking pit shaft, or even the case where cause pumping unit holddown.For the success rate for improving de-plugging, unfreezing, it usually needs will
It is mentioned on rod-type pumping unit, pulls away positioning and be shorted the just crowded de-plugging of progress；Or above mention tubular type pump plunger, pull away pump barrel backwash solution
Card, to realize above-mentioned operation, scene need to dismantle polished rod and matched double rubber gates and high pressure sealing device, while remove 2~3
Sucker rod, at present during the replacement operation of scene, well head is constantly in dummy status for a long time, seriously affects operation safety.
A kind of existing wellhead blowout preventer, is made of components such as valve body, valve seat, check valves, can solve to a certain extent
Certainly the problem of blowout prevention, but its structure is complicated, higher cost, installs and uses relatively complicated.
Summary of the invention
In view of the above-mentioned drawbacks in the prior art, the present invention provides a kind of oil pumping well head blowout hookup and opens well head
Blowout prevention method when operation, can guarantee during opening shaft mouth operation hermetically sealed in time, improve the safety of operation.
A kind of oil pumping well head blowout hookup, including blowout prevention nipple, the top of the blowout prevention nipple are removably equipped with
Blowout-preventing pipe plug；The blowout prevention nipple bottom end is equipped with the first connector for being removably connected with production tree upper end, and described anti-
Spray pipe nipple inner cavity matches with the sucker rod in the production tree, sucker rod hanger is equipped in the blowout prevention nipple, in institute
It states on blowout prevention nipple inner wall and is equipped with step at the first distance of bottom end, the sucker rod hanger is supported on the step
On, the sucker rod hanger bottom end, which is formed with, can be plugged into the plug connecting in the sucker rod and with the sucker rod.
Oil pumping well head blowout hookup as described above, it is preferable that the blowout prevention nipple is in charge of and is fixed including first
It is set in described first and is in charge of the second of apical lateral and be in charge of, described first, which is in charge of top, forms the step.
Preferably, the sucker rod hanger includes a columnar shape basal, is equipped with annular protrusion on the outside of the middle part of described matrix,
The annular protrusion is supported on the step upper surface in the blowout prevention nipple.
Preferably, described second is in charge of and is in charge of the fixation that is spirally connected with described first.
Preferably, the first bottom being in charge of of the blowout prevention nipple plugs the production tree upper end, and with the oil recovery
Tree upper end is spirally connected.
Preferably, the outer diameter of the annular protrusion is less than the second internal diameter being in charge of of the blowout prevention nipple, and is greater than described
First internal diameter being in charge of of blowout prevention nipple.
Preferably, the upper end of the sucker rod hanger is equipped with the external screw thread for connecting with lifting appliance.
Preferably, it uses and is threadedly coupled between the plug with the sucker rod of the sucker rod hanger lower end.
Preferably, it uses and is threadedly coupled between the blowout-preventing pipe plug and the blowout prevention nipple.
Preferably, the distance between the step upper surface in the blowout-preventing pipe plug lower end and the blowout prevention nipple is at least
10cm。
A kind of rod-pumped well using above-mentioned oil pumping well head blowout hookup opens blowout prevention method when shaft mouth operation, packet
It includes:
The attachment being mounted on oil pumping polish rod is removed, and the oil pumping polish rod is removed by sucker rod top；
The blowout prevention nipple of oil pumping well head blowout hookup is set to the sucker rod periphery from sucker rod top set,
And make to connect on the outside of the blowout prevention nipple with production tree inside；
The sucker rod hanger is connected to the sucker rod top end opening using lifting appliance, keeps the sucker rod outstanding
The plug of hanging device bottom end is inserted into sucker rod, and sucker rod hanger is located at around plug and is partially supported upon the sucker rod
On the end face of top；
Silk plug is connected to blowout prevention nipple upper end, with totally-enclosed well head.
Further, it is described the oil pumping polish rod is removed by sucker rod top after, further includes:
The sucker rod is removed into part, so that the length of the sucker rod reduces preset value.
Blowout prevention method when oil pumping well head blowout hookup provided by the invention and unlatching shaft mouth operation, by well
Sucker rod housing set blowout prevention nipple, and blowout prevention nipple and production tree are connected, are fixed sucker rod using hanger, so
Injection channel is intercepted by silk plug afterwards, can guarantee when shaft mouth operation need to be opened by replacing oil pumping polish rod, just crowded de-plugging, well-flushing etc.,
Blowout is prevented, to achieve the purpose that blowout prevention, device is simple, and it is easy to operate, it can guarantee the safety for opening shaft mouth operation.
Detailed description of the invention
Fig. 1 is the cross-sectional view of oil pumping well head blowout hookup embodiment one of the invention；
Wellbore conditions before the de-plugging of blowout prevention embodiment of the method three when Fig. 2 is rod-pumped well unlatching shaft mouth operation of the invention
Schematic diagram；
Pit shaft shape when the de-plugging of the blowout prevention embodiment of the method three when Fig. 3 is rod-pumped well unlatching shaft mouth operation of the invention
State schematic diagram.
Description of symbols:
1- blowout prevention nipple 101- first is in charge of 102- second and is in charge of 2- blowout-preventing pipe plug
3- production tree 4- sucker rod 5- sucker rod hanger 501- columnar shape basal
502- annular protrusion 6- step 7- insert pump 8- pit shaft
9- lifting appliance 10- orientation spool
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing, to the embodiment of the present invention
In technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, without
It is whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, shall fall within the protection scope of the present invention.
Embodiment one
It is as shown in Figure 1 the cross-sectional view of oil pumping well head blowout hookup embodiment one of the invention；The present embodiment provides
A kind of oil pumping well head blowout hookup, including blowout prevention nipple 1, the top of blowout prevention nipple 1 are removably equipped with blowout-preventing pipe plug 2；
1 bottom end of blowout prevention nipple is equipped with for the first connector for being removably connected with 3 upper end of production tree, and 1 inner cavity of blowout prevention nipple with adopt
Oil tree 3 in sucker rod 4 match, in blowout prevention nipple 1 be equipped with sucker rod hanger 5, on 1 inner wall of blowout prevention nipple and away from
From step 6 is equipped at the first distance of bottom end, sucker rod hanger 5 is supported on step 6, and 5 bottom end of sucker rod hanger is formed with
It can be plugged into the plug connecting in sucker rod 4 and with sucker rod 4.
Specifically, blowout prevention nipple 1 can be an integral structure, and be also possible to be in charge of what body was formed by connecting by two sections or multistage
Composite structure, connection type between each section can be to be threadedly coupled or welding etc.；By the way of threaded connection, assembling
It is more flexible, it can connect at any time, it is convenient for disassembly and assembly.
Blowout prevention nipple 1 can be in a cylinder, for the tube body of axially extending bore for accommodating sucker rod and passing through, and in length
It is identical to spend each section overall diameter on direction；A ring-shaped step can be set at its bottom end first distance in blowout prevention nipple 1,
Wherein, first distance refers to that base length of the step 6 apart from blowout prevention nipple 1, the internal diameter of blowout prevention nipple 1 can be greater than sucker rod
4 maximum outside diameter, or at least guarantee that the diameter below of step 6 is greater than the maximum outside diameter of sucker rod 4, so that step 6 arrives bottom end
Blowout prevention nipple 1 can be set in 4 top peripheral of sucker rod.Sucker rod 4 is specifically as follows hollow stem or solid hopkinson bar, works as oil pumping
When bar 4 is solid hopkinson bar, top can have one section of opening for being inserted into sucker rod hanger 5 in entire pit shaft；Sucker rod 4
Bar can be divided to join end to end by several oil pumping, to constitute the sucker rod of whole required length, two adjacent oil pumping point
Using threaded connection between bar.Sucker rod hanger 5 or blocky or column, bottom can be formed and sucker rod 4
The plug matched prevents sucker rod 4 from falling pit shaft to be fixedly connected by plug with sucker rod 4.
Blowout prevention nipple 1 and production tree 3 are fixedly linked, the lower end plug of sucker rod hanger 5 is connect with sucker rod 4, is taken out
Being partially supported upon on step 6 for 5 periphery of oil rod hanger, prevents it from falling to hang sucker rod 3, while using blowout-preventing pipe plug 2
Well head is blocked completely, prevents from spraying on the toxic gases such as the hydrogen sulfide in well or other substances.
Oil pumping well head blowout hookup provided in an embodiment of the present invention set up defences by the sucker rod housing in well spray it is short
Section, and blowout prevention nipple and production tree are connected, sucker rod is fixed using hanger, it is logical then to intercept injection by silk plug
Road can guarantee when shaft mouth operation need to be opened by replacing oil pumping polish rod, just crowded de-plugging, well-flushing etc., prevent blowout, anti-to reach
The purpose of spray, whole device component is simple, but blowout prevention effect is fine, and easy to operate, can also guarantee to open shaft mouth operation
Safety.
In the above-described embodiments, blowout prevention nipple 1 may include first being in charge of 101 and fixed being set in described first and be in charge of
The second of 101 apical laterals is in charge of 102, and first, which is in charge of 101 tops, forms step 6.At this point, first is in charge of 101 and second point
The outer diameter of pipe 102 is different, and first, which is in charge of 101 apical laterals, can be set external screw thread, and second, which is in charge of 102 bottom ends inside, can be set
Internal screw thread, so that first is in charge of to be in charge of with second and is fixed together by being spirally connected.And preferably first is in charge of 101 outer diameter and is equal to the
Two are in charge of 102 internal diameter, constitute blowout prevention nipple 1 using two sections of being in charge of for different tube diameters, are in charge of 101 first and are in charge of with second
102 joint is formed naturally step 6, alleviates manufacture difficulty of processing, saves manufacturing cost.In addition, taking threaded connection
Mode make the dismounting of blowout prevention nipple 1 more convenient, can reduce length after tearing open, save memory space, meanwhile, first is in charge of
101 screw thread button-type can be external upset (EU) pin thread (EUE-P), and the second screw thread button-type for being in charge of 102 can be external upset (EU) female thread
(EUE-B), such button-type can guarantee that first is in charge of 101 and second and is in charge of the stability and leakproofness of connection between 102.
Specifically, second is in charge of 102 top inner walls and can also open up internal screw thread, to connect blowout-preventing pipe plug 2 for fast thread.
Referring to attached drawing 1, sucker rod hanger 5 is specifically as follows including a cylindric matrix 501, outside the middle part of matrix 501
Side is equipped with annular protrusion 502, and annular protrusion 502 is supported on 6 upper surface of step in blowout prevention nipple 1.The mesh of oil pumping pipe hanger 5
Be that, in order to above mention or decline sucker rod 4 by sucker rod hanger 5, need to guarantee that its both ends can be distinguished to hang sucker rod 4
It is connected with sucker rod 4 and lifting appliance 9, preferably, sucker rod hanger 5 is arranged to include columnar shape basal 501 and ring
The form of shape protrusion 502, facilitates relatively simple in processing technology, and during declining sucker rod 4, annular protrusion 502 can be very
It is conveniently supported on the step 6 in blowout prevention nipple 1, after laying down oil pumping polish rod, can directly be hung by sucker rod hanger 5
Sucker rod 4, and be supported on step 6, without supporting sucker rod 4 always by other equipment, save cost.
Further, can plug 3 upper end of production tree by the bottom that the first of blowout prevention nipple 1 is in charge of 101, and with oil recovery
3 upper ends are set to be spirally connected to realize the connection of blowout prevention nipple 1 Yu production tree 3.Preferably, the first Basolateral for being in charge of 101 can also be opened
If external screw thread, to be quickly and easily connected through a screw thread realization and being fixedly connected using tree.By blowout prevention by the way of being spirally connected
Pipe nipple 1 is fixed on production tree 3, easy to disassemble and installation.
On the basis of the above embodiments, referring to attached drawing 1, the outer diameter of annular protrusion 502 is smaller than the second of blowout prevention nipple 1
It is in charge of 102 internal diameter, and is greater than the first of blowout prevention nipple 1 internal diameter for being in charge of 102.It can guarantee that annular protrusion 502 can be supported on
While on step 6, also guarantee there is certain interval between annular protrusion 502 and the inner wall of blowout prevention nipple 1, so that lifting appliance 9
It is upper mention or decline sucker rod hanger 5 during, blowout prevention nipple 1 will not hinder sucker rod hanger 5 in blowout prevention nipple 1
It moves up and down.
Specifically, the upper end of sucker rod hanger 5 can be equipped with the external screw thread for connecting with lifting appliance 9.If that will take out
When oil rod hanger 5 is connect with lifting appliance 9, there is spiral shell on the threaded portion diameter of 5 upper end of sucker rod hanger and lifting appliance 9
The diameter in line portion mismatches, and can be shorted by variable diameter and connect sucker rod hanger 5 with lifting appliance 9.
Meanwhile between the plug and sucker rod 4 of 5 lower end of sucker rod hanger and blowout-preventing pipe plug 2 and blowout prevention nipple 1 it
Between threaded connection can also be used.Plug is inserted into and is screwed onto 4 top end opening of sucker rod, and effect is also that can guarantee sucker rod
It is removably secured connection between hanger 5 and sucker rod 4, is not needing to dismantle sucker rod hanger 5 in use, facilitating；
Blowout-preventing pipe plug 2 also can easily dismount on blowout prevention nipple 1, and operating flexibility is preferable.
In the above-described embodiments, 2 lower end of blowout-preventing pipe plug can be protected with the distance between 6 upper surface of step in blowout prevention nipple 1
Hold at least 10cm.It can be convenient for the sucker rod hanger 5 for thering are enough spaces to be supported on step 6 in this way, but originally
Field those of ordinary skill is appreciated that the distance between 6 upper surface of step in 2 lower end of blowout-preventing pipe plug and blowout prevention nipple 1 simultaneously
It is not limited to the distance of 10cm, it can be depending on the specific size of practical sucker rod hanger 5.
Embodiment two
When the present embodiment will replace oil pumping polish rod with well head, filled using the oil pumping well head blowout prevention that previous embodiment provides
Set the method for implementing blowout prevention to well head:
When opening shaft mouth operation is replacement oil pumping polish rod, concrete operation step includes:
S101: the attachment being mounted on oil pumping polish rod is removed, and oil pumping polish rod is removed by sucker rod top；
The specific operating procedure of S101 can be, and open well head, above mentions oil pumping polish rod using lifting appliance 9, proposes first
After root oil pumping divides bar box cupling, elevator is stamped on box cupling, is unloaded on the oil pumping polish rod and oil pumping polish rod above first box cupling
Attachment, wherein the attachment on oil pumping polish rod includes rubber gate and high pressure sealing device etc..
S102: bar top set is divided to be set to oil pumping from first oil pumping the blowout prevention nipple 1 of oil pumping well head blowout hookup
Bar periphery, and make to connect on the outside of blowout prevention nipple with production tree inside；
S103: sucker rod hanger 5 is connected to first oil pumping using lifting appliance and divides bar top end opening, makes sucker rod
The plug of hanger bottom end is inserted into first oil pumping and divides in bar, and sucker rod hanger is located at being partially supported upon around plug
First oil pumping divides on the end face of bar top；Blowout-preventing pipe plug 2 is connected to blowout prevention nipple upper end, with totally-enclosed well head；
The specific operating procedure of S103 can be, and 5 lower section of sucker rod hanger is connect with the top of first sucker rod,
Then elevator is unloaded, sucker rod is transferred by lifting appliance 9, make the part branch being located at around plug on sucker rod hanger 5
Support disconnects on the step 6 in blowout prevention nipple 1, and with lifting appliance 9；Finally by blowout-preventing pipe plug 2 and 1 upper end of blowout prevention nipple
Connect totally-enclosed well head.
It, can also be in advance by the tubing pressure of rod-pumped well and oil jacket annulus pressure before S101 to guarantee operation safety
Emptying falls zero, and carries out purging displacement, after sampling oil-free, gas, i.e., openable well head.
After above-mentioned S103, can also ground by rubber gate, high pressure sealing device and oil pumping polish rod combine after,
Observation oil pressure, casing pressure table are zeroed, and after sampling oil-free, gas, then open blowout-preventing pipe plug 2,9 connecting with pumping rod hanger of lifting appliance
Sucker rod is above mentioned after 5, elevator is stamped at blowout prevention nipple, unloads sucker rod hanger, by lifting appliance 9 and the direct phase of sucker rod
Even, then sucker rod is above mentioned, unloads blowout prevention nipple 1, and stamp elevator in 1 upper end of rod collar, takes out blowout prevention nipple 1, later
The attachmentes such as the oil pumping polish rod combined, rubber gate and high pressure sealing device and first sucker rod phase are played using lifting appliance 9
Even, decentralization oil pumping polish rod is to specified position, rear enclosed well head, operation finishes.
Specifically, in step S102-S103, if blowout prevention nipple 1 is fabricated to split type structure, such as shown in Figure 1
For two sections of split type structures, can will prevent after unloading the attachment on oil pumping polish rod and oil pumping polish rod above first box cupling
Spray pipe nipple 1 is nested into first oil pumping and divides on bar, and is seated on production tree, can not consolidate blowout prevention nipple 1 with production tree first at this time
Surely it connects, is connected to after first oil pumping divides on bar to sucker rod hanger and again fixes blowout prevention nipple 1 with production tree
It connects.
Embodiment three
When open shaft mouth operation be insert pump just squeeze de-plugging, well-flushing, water filling for oil or tubing pump well-flushing, water filling for oil,
Wellbore conditions schematic diagram before the de-plugging of blowout prevention embodiment of the method two when Fig. 2 is rod-pumped well unlatching shaft mouth operation of the invention；
Wellbore conditions when Fig. 3 is the de-plugging of the blowout prevention embodiment of the method two when rod-pumped well of the invention opens shaft mouth operation are illustrated
Figure；In figure, oil well pump 7 can be insert pump, can refer to attached drawing 2-3, the specific steps are as follows:
S201: the attachment being mounted on oil pumping polish rod is removed, and oil pumping polish rod is removed by sucker rod top；
The concrete operations of S201 can be opening well head, above mention oil pumping polish rod using lifting appliance 9, propose first oil pumping
After bar box cupling, elevator is stamped on box cupling, unloads the attachment on the oil pumping polish rod and oil pumping polish rod above first box cupling,
In, the attachment on oil pumping polish rod includes rubber gate and high pressure sealing device etc.；
S202: being set to sucker rod periphery from sucker rod top set for the blowout prevention nipple of oil pumping well head blowout hookup, and
Make to connect on the outside of blowout prevention nipple with production tree inside；
S203: sucker rod hanger is connected to sucker rod top end opening using lifting appliance, makes sucker rod hanger bottom
The plug at end is inserted into sucker rod, and sucker rod hanger is located at around plug and is partially supported upon sucker rod top end face
On；Silk plug is connected to blowout prevention nipple upper end, with totally-enclosed well head.
It, can also be in advance by the tubing pressure of rod-pumped well and oil jacket annulus before step S201 to guarantee operation safety
Pressure-emptying falls zero, and carries out purging displacement, after sampling oil-free, gas, i.e., openable well head.
For the benefit of de-plugging can also above mention sucker rod using lifting appliance 9 after step S202, until insert pump 7 pulls away
Orientation spool 10 or tubular type pump plunger are above mentioned again after pulling away pump barrel to the next box cupling of exposing；Elevator is stamped on the box cupling, it will
Sucker rod removes part, so that the length of sucker rod reduces preset value；Specifically, can be detachable by the quantity of reduction sucker rod
2~3 oil pumping above the lower box cupling divide bar, then connect sucker rod hanger 5 with sucker rod remaining in well, will pump
Bar hanger is seated on the step 6 in blowout prevention nipple 1, finally tightens the totally-enclosed well head of blowout-preventing pipe plug 2；It then can to insert pump
With by production tree produce valve just squeeze high pressure blockages relieving fluid to pit shaft 8 release pit shaft 8 block, can also from produce valve positive injection or from
Casing valve instead fills the water, gas injection carries out for oil；Or it can be by injecting flushing fluid backwash plunger and pump from casing valve to tubing pump
Cylinder releases the problem of holddown, can also be filled the water by casing valve, gas injection carries out for oil；The liquid in pit shaft 8 is injected to press as in Fig. 3
The direction shown arrow F flows in oil reservoir.
It, can be immediately if occurring the abnormal conditions such as well kick during aforesaid operations step above proposes or transfers sucker rod
Sucker rod is transferred, sucker rod hanger 5 is supported on the step 6 in blowout prevention nipple 1, finally tightening blowout-preventing pipe plug 2 can stand
Well head is closed, pressure release is carried out finally by the production valve of production tree, until restoring normal.
Specifically, in step S202-S203, if blowout prevention nipple 1 is fabricated to split type structure, such as shown in Figure 1
For two sections of split type structures, can will prevent after unloading the attachment on oil pumping polish rod and oil pumping polish rod above first box cupling
Spray pipe nipple 1 is nested on first sucker rod, and is seated on production tree, can not fixed blowout prevention nipple 1 with production tree first at this time
It connects, is again fixedly connected with blowout prevention nipple 1 with production tree after being connected on first sucker rod to sucker rod hanger 5
Get up.
Rod-pumped well of the invention opens the blowout prevention method of shaft mouth operation, after well head unlatching, using lifting appliance in well
Mouth setting blowout hookup, which can be made of waste and old oil passageway, cheap, simple and practical, highly-safe.
Simultaneously as the blowout hookup can hermetically sealed well head, pressure resistance up to 40MPa, therefore can improve every round water filling replace it is oily
Stop injection pressure power, that is, increase every round water injection rate, to improve the oil production of every round water filling；Replace oil pumping polish rod, just
When above mentioning during the unlatching shaft mouth operation such as crowded de-plugging, well-flushing or transfer sucker rod, there are the abnormal conditions such as well kick, may be implemented
Well head is completely enclosed in 1 minute, to not need kill-job before operation, not only saves a large amount of expense, also fundamentally prevents
The well control risk of related operation.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of oil pumping well head blowout hookup, which is characterized in that including blowout prevention nipple, the top of the blowout prevention nipple is removable
It is equipped with blowout-preventing pipe plug with unloading；The blowout prevention nipple bottom end is equipped with the first connector for being removably connected with production tree upper end,
And the blowout prevention nipple inner cavity matches with the sucker rod in the production tree, and sucker rod hanging is equipped in the blowout prevention nipple
Device, is equipped with step on the blowout prevention nipple inner wall and at the first distance of bottom end, and the sucker rod hanger is supported on institute
It states on step, the sucker rod hanger bottom end, which is formed with, can be plugged into the sucker rod and connect with the sucker rod
Plug；
The blowout prevention nipple includes first being in charge of and fixing to be set in described first and be in charge of the second of apical lateral and be in charge of, and described
One, which is in charge of top, forms the step；
The described first apical lateral setting external screw thread being in charge of, described second is in charge of on the inside of bottom end and is provided with and the external screw thread
The internal screw thread of cooperation；
It uses and is threadedly coupled between the blowout-preventing pipe plug and the blowout prevention nipple.
2. oil pumping well head blowout hookup according to claim 1, which is characterized in that the sucker rod hanger includes
The middle part outside of one columnar shape basal, the columnar shape basal is equipped with annular protrusion, and the annular protrusion is supported on the blowout prevention nipple
The interior step upper surface.
3. oil pumping well head blowout hookup according to claim 2, which is characterized in that first point of the blowout prevention nipple
The bottom of pipe plugs the production tree upper end, and is spirally connected with the production tree upper end.
4. oil pumping well head blowout hookup according to claim 3, which is characterized in that the outer diameter of the annular protrusion is small
In the second internal diameter being in charge of of the blowout prevention nipple, and it is greater than the first internal diameter being in charge of of the blowout prevention nipple.
5. oil pumping well head blowout hookup according to claim 4, which is characterized in that the sucker rod hanger it is upper
End is equipped with the external screw thread for connecting with lifting appliance.
6. oil pumping well head blowout hookup according to claim 5, which is characterized in that the sucker rod hanger lower end
Plug and the sucker rod between using being threadedly coupled.
7. oil pumping well head blowout hookup according to claim 1, which is characterized in that the blowout-preventing pipe plug lower end and institute
It states the distance between step upper surface in blowout prevention nipple and is at least 10cm.
8. a kind of rod-pumped well using such as the described in any item oil pumping well head blowout hookups of claim 1-7 opens well head
Blowout prevention method when operation characterized by comprising
The attachment being mounted on oil pumping polish rod is removed, and the oil pumping polish rod is removed by sucker rod top；
The blowout prevention nipple of oil pumping well head blowout hookup is set to the sucker rod periphery from sucker rod top set, and is made
It is connect on the outside of the blowout prevention nipple with production tree inside；
The sucker rod hanger is connected to the sucker rod top end opening using lifting appliance, makes the sucker rod hanger
The plug of bottom end is inserted into sucker rod, and sucker rod hanger is located at around plug and is partially supported upon the sucker rod top
On end face；
Blowout-preventing pipe plug is connected to blowout prevention nipple upper end, with totally-enclosed well head.
9. rod-pumped well according to claim 8 opens blowout prevention method when shaft mouth operation, which is characterized in that will be described
After oil pumping polish rod is removed by sucker rod top, further includes:
The sucker rod is removed into part, so that the length of the sucker rod reduces preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410654277.6A CN105587284B (en) | 2014-11-17 | 2014-11-17 | Blowout prevention method when oil pumping well head blowout hookup and unlatching shaft mouth operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410654277.6A CN105587284B (en) | 2014-11-17 | 2014-11-17 | Blowout prevention method when oil pumping well head blowout hookup and unlatching shaft mouth operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105587284A CN105587284A (en) | 2016-05-18 |
| CN105587284B true CN105587284B (en) | 2019-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410654277.6A Active CN105587284B (en) | 2014-11-17 | 2014-11-17 | Blowout prevention method when oil pumping well head blowout hookup and unlatching shaft mouth operation |
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| CN108825994B (en) * | 2018-07-10 | 2020-08-04 | 合肥市神雕起重机械有限公司 | Adjustable top-hung bracket for intelligent parking garage |
| CN109184582B (en) * | 2018-09-17 | 2023-09-08 | 克拉玛依胜利高原机械有限公司 | Split polish rod, polish rod replaceable assembly and polish rod replacement process |
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| US4655284A (en) * | 1986-02-11 | 1987-04-07 | Positive Action Tool Western Limited | Well head shut-off device |
| CN2763476Y (en) * | 2004-11-05 | 2006-03-08 | 郭伯华 | Blowing out preventer suspension device for sucket rod |
| CN203285352U (en) * | 2013-06-07 | 2013-11-13 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Blowout prevention joint of sucker rod for oil well operation |
| CN203321405U (en) * | 2013-06-25 | 2013-12-04 | 李霞 | Sucker rod blowout preventer |
| CN203584360U (en) * | 2013-11-21 | 2014-05-07 | 中国石油化工股份有限公司 | Sucker rod blowout preventer |
| CN204312015U (en) * | 2014-11-17 | 2015-05-06 | 中国石油天然气股份有限公司 | Oil pumping well head blowout hookup |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4655284A (en) * | 1986-02-11 | 1987-04-07 | Positive Action Tool Western Limited | Well head shut-off device |
| CN2763476Y (en) * | 2004-11-05 | 2006-03-08 | 郭伯华 | Blowing out preventer suspension device for sucket rod |
| CN203285352U (en) * | 2013-06-07 | 2013-11-13 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Blowout prevention joint of sucker rod for oil well operation |
| CN203321405U (en) * | 2013-06-25 | 2013-12-04 | 李霞 | Sucker rod blowout preventer |
| CN203584360U (en) * | 2013-11-21 | 2014-05-07 | 中国石油化工股份有限公司 | Sucker rod blowout preventer |
| CN204312015U (en) * | 2014-11-17 | 2015-05-06 | 中国石油天然气股份有限公司 | Oil pumping well head blowout hookup |
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| CN105587284A (en) | 2016-05-18 |
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