CN108035692A - For the device and well head control method in blowout time limit oil pipe column - Google Patents
For the device and well head control method in blowout time limit oil pipe column Download PDFInfo
- Publication number
- CN108035692A CN108035692A CN201711268685.8A CN201711268685A CN108035692A CN 108035692 A CN108035692 A CN 108035692A CN 201711268685 A CN201711268685 A CN 201711268685A CN 108035692 A CN108035692 A CN 108035692A
- Authority
- CN
- China
- Prior art keywords
- plug valve
- blowout
- cover body
- stopper section
- oil pipe
- 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.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
Abstract
The present invention provides a kind of device and well head control method being used in blowout time limit oil pipe column, the upper end of the oil pipe column is connected with plug valve, is arranged with wellhead blowout preventor outside the plug valve, described device includes：For the cover body being connected with wellhead blowout preventor, the cover body has accommodating space, and the accommodating space houses the plug valve wherein when the cover body is connected with the wellhead blowout preventor；Stopper section is provided with the cover body, the stopper section at least has projected area along towards the direction of the plug valve, so as to which the stopper section has the stop surface in face of the plug valve, the stop surface can push up the upper end of admittedly described plug valve, spacing to be carried out when blowout occurs and causes the plug valve to move up to the oil pipe column.A kind of device for being used to limit plug valve in blowout provided by the invention and well head control method are it is possible to prevente effectively from the generation of blowout out of control event.
Description
Technical field
The present invention relates to oil field well control technical field, more particularly to a kind of device being used in blowout time limit oil pipe column
And well head control method.
Background technology
The description of this part is only provided discloses relevant background information with the present invention, without forming the prior art.
At present during oil well repairing operation lower oil tube, well-control equipment is mostly that half envelope flashboard being connected with big four flange is prevented
Spray apparatus, it is mostly oil pipe plug valve to rob spraying equipment.During generation blowout dangerous situation, well oil pipe is connected by plug valve, then preventer
Half envelope flashboard hold tightly plug valve, so as to seal the annular space between oil pipe and casing.Oil pipe plug valve is closed, seals oil pipe
Inner space, achievees the purpose that to control blowout dangerous situation.
But if occurring precipitate high-pressure fluid in well, high-pressure fluid will be promoted on oil pipe column and pushed up, and blowout prevention
The mode pushed up on device control oil pipe tubing string, only blocks tubing coupling simply by half envelope flashboard of preventer.Once oil pipe pipe
The upper top power of column is sufficiently large, and oil pipe column will destroy half envelope flashboard and fly in the air, cause blowout out of control.At this time to controlling
Well head open flow, difficulty will be very big, and loss is huge.
It should be noted that the introduction to technical background above be intended merely to it is convenient technical scheme is carried out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes the present invention
Background section is set forth and thinks that above-mentioned technical proposal is known to those skilled in the art.
The content of the invention
Based on foregoing prior art defect, the present invention provides a kind of device for being used to limit plug valve in blowout with
And well head control method, it is possible to prevente effectively from the generation of blowout out of control event.
To achieve these goals, the present invention provides following technical solution.
A kind of device being used in blowout time limit oil pipe column, the upper end of the oil pipe column are connected with plug valve, institute
State and be arranged with wellhead blowout preventor outside plug valve, described device includes：
For the cover body being connected with wellhead blowout preventor, the cover body has accommodating space, and the accommodating space is described
The plug valve is housed wherein when cover body is connected with the wellhead blowout preventor；
Stopper section is provided with the cover body, the stopper section at least has projection along towards the direction of the plug valve
Area, so that the stopper section has the stop surface in face of the plug valve, the stop surface can push up the upper of admittedly described plug valve
End, it is spacing to be carried out when blowout occurs and causes the plug valve to move up to the oil pipe column.
Preferably, the cover body is in the tubular of lower ending opening, its lower end is extended radially outward formed with connecting portion, described
Multiple connecting holes circumferentially arranged are provided with connecting portion.
Preferably, constriction forms the stopper section, the stopper section to side wall of the cover body close to upper end radially inward
Internal face form the stop surface.
Preferably, the upper end of the stopper section is provided with blowout prevention element, and the blowout prevention element has hollow channel, in described
Empty passage is connected by the stopper section with the accommodating space；It is provided with the blowout prevention element hollow logical described in energy break-make
The valve in road.
Preferably, the upper end of the blowout prevention element is provided with lifting sub.
Preferably, the inner wall of the cover body convexes to form the stopper section, the lower surface of the stopper section radially inward
Form the stopper section.
Preferably, the outer wall of the cover body sets multiple draw rings, and multiple draw rings can be fixed by connector and ground
Connection.
One kind is used for the well head control method in blowout, including：
When overflow occurs in oil pipe column, plug valve is installed in the upper end of the oil pipe column, and outside the plug valve
It is arranged wellhead blowout preventor；
Close the wellhead blowout preventor, the plug valve and sleeve gate；
When the oil pipe column moves up, open described sleeve pipe lock and carry out open flow；
Device described in any one above-mentioned embodiment is connected with wellhead blowout preventor, so that the plug valve houses
In the accommodating space of the cover body.
Preferably, the outer wall of the cover body sets multiple draw rings；
After the step that the plug valve is housed in the accommodating space of the cover body, the method further includes：Will
Multiple draw rings are fixedly connected with the ground by connector.
Preferably, the upper end of the stopper section is provided with blowout prevention element, and the blowout prevention element has hollow channel, described anti-
The valve of hollow channel described in energy break-make is provided with spray element；
After multiple draw rings are fixedly connected with the ground by connector, the method further includes：
Close described sleeve pipe gate and the valve.
Embodiment of the present invention be used for blowout time limit oil pipe column device and well head control method, by
The stopper section of stop surface is set in cover body, which has the stop surface towards plug valve, so that the stop surface can push up admittedly
The upper end of plug valve.In this way, when blowout occurs, down-hole pressure pushing tow oil pipe column uplink, so as to drive plug valve together
When moving up, stop surface can push up the upper end of solid plug valve, so as to limit the further uplink of oil pipe column, avoid blowout out of control event
Generation.
With reference to following explanation and attached drawing, only certain exemplary embodiments of this invention is disclose in detail, specifies the original of the present invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in scope.In appended power
In the range of the spirit and terms that profit requires, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in a other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended in any way to limit model disclosed by the invention
Enclose.In addition, shape and proportional sizes of each component in figure etc. are only schematical, the understanding of the present invention is used to help, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
To select various possible shapes and proportional sizes to implement the present invention as the case may be.In the accompanying drawings：
Fig. 1 is the structure diagram for the device in blowout time limit oil pipe column of embodiment of the present invention.
Embodiment
In order to make those skilled in the art more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this area is common
Technical staff's all other embodiments obtained on the premise of creative work is not made, should all belong to guarantor of the present invention
The scope of shield.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood implication of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
The arbitrary and all combination of relevant Listed Items.
As shown in Figure 1, the present invention provides a kind of device being used in blowout time limit oil pipe column, the oil pipe column
Upper end be connected with plug valve (not shown), be arranged with wellhead blowout preventor (not shown) outside the plug valve.
Described device can include：For the cover body 1 being connected with wellhead blowout preventor, the cover body 1 has accommodating space
101, the accommodating space 101 houses the plug valve wherein when the cover body 1 is connected with the wellhead blowout preventor；
Stopper section 102 is provided with the cover body 1, the stopper section 102 at least has projection along towards the direction of the plug valve
Area, so that there is stop surface 102a, the stop surface 102a in face of the plug valve can push up admittedly described for the stopper section 102
The upper end of plug valve, it is spacing to be carried out when blowout occurs and causes the plug valve to move up to the oil pipe column.
The device being used in blowout time limit oil pipe column of embodiment of the present invention, by setting backstop in cover body 1
The stopper section 102 of face 102a, the stopper section 102 have the stop surface 102a towards plug valve, so that stop surface 102a can be with
The upper end of the solid plug valve in top.In this way, when blowout occurs, down-hole pressure pushing tow oil pipe column uplink, so as to drive plug valve
When moving up together, stop surface 102a can push up the upper end of solid plug valve, so as to limit the further uplink of oil pipe column, prevent blowout
The generation of event out of control.
In addition, embodiment of the present invention is used to be not limited in the applicable scene of the device of blowout time limit oil pipe column
State with oil pipe column situation.Conventional, the lower end connected pipes tubing string of plug valve, during blowout, down-hole pressure is to oil pipe column
Apply upward upper top power with plug valve, by the gravity of oil pipe column, can compensate for and power is pushed up on part, in this way, oil pipe
Tubing string and half envelope flashboard of plug valve destruction fly to the aerial probability reduction for preventing blowout failure.
And apply embodiment of the present invention be used for after the device of blowout time limit oil pipe column, since cover body 1 is right
Plug valve is restricted and fixation, then, the lower end of even plug valve does not have the applicable scene of connected pipes tubing string, i.e., oily
The gravity of pipe tubing string compensates for action deprivation, and plug valve also can preferably be kept the position of closure well head, prevent blowout effect still
Preferably.
Embodiment of the present invention is used to design simply in the device of blowout time limit oil pipe column, highly practical；And pacify
Dress is convenient, ensures well head safe；In addition, disposal is timely, the generation of blowout out of control event can be effectively prevented from.
In the present embodiment, cover body 1 substantially can be in lower ending opening tubular, its lower end extend radially outward formed with
Connecting portion 103, is provided with multiple connecting hole 103a circumferentially to arrange on connecting portion 103.There are multiple connecting holes by setting
The connecting portion 103 of 103a, can be such that the flange of cover body 1 and wellhead blowout preventor is realized by bolt and be detachably connected.
In addition, when plug valve pushes up solid stop surface 102a upwards in order to prevent, cover body 1 occurs connection with wellhead blowout preventor and breaks
De-, the outer wall of cover body 1 can set multiple draw rings 5, and multiple draw rings 5 can pass through connector (such as can be steel wire rope) and ground
It is fixedly connected.Specifically, earth anchor or base can be provided with ground, the lower end of connector can be fixedly connected upper ground surface or
On person's base.
Further, the accommodating space 101 that cover body 1 has can be not only used for accommodating plug valve, can also house blowout
When open flow come out liquid, polluted so as to avoid open flow liquid from being sprayed at well site ground.
In the present embodiment, stopper section 102 at least has a projected area along towards the direction of plug valve, Ke Yiwei,
Stopper section 102 is not zero along the projected area of vertically downward direction, i.e., at least radially inwardly extending part in stopper section 102 away from
From.
As shown in Figure 1, in a preferred embodiment, constriction is formed side wall of the cover body 1 close to upper end radially inward
Stopper section 102, the internal face of stopper section 102 form stop surface 102a.The stopper section 102 formed in this way is cover body 1 itself
A structure part, its cross sectional shape substantially can be in isosceles trapezoid shape.
Alternatively, in another feasible embodiment, the inner wall of cover body 1 can convex to form stopper section 102 radially inward,
The lower surface of stopper section 102 forms stopper section 102.
The upper end of stopper section 102 can be provided with substantially can blowout prevention element 2 in a tubular form, it is hollow with hollow channel 201
Passage 201 is connected by stopper section 102 with accommodating space 101.In addition, it is also provided with blowout prevention element 2 in energy break-make
The valve 3 of empty passage 201, the valve 3 are specifically as follows gate.Further, blowout prevention element 2 is preferably integral with stopper section 102
Shaping.
In addition, the upper end of blowout prevention element 2 can be provided with lifting sub 4, which can be in inner wall is provided with
The cylinder of screw thread, lifting means can be by raising up the present apparatus after being connected with lifting sub 4.
Embodiment of the present invention additionally provides a kind of method for carrying out well head control in blowout using above device, it can
To include the following steps：
Step S1：When overflow occurs in oil pipe column, plug valve is installed in the upper end of the oil pipe column, and in the rotation
Wellhead blowout preventor is arranged outside plug valve；
Step S2：Close the wellhead blowout preventor, the plug valve and sleeve gate；
Step S3：When the oil pipe column moves up, open described sleeve pipe lock and carry out open flow；
Step S4：Device described in any one above-mentioned embodiment is connected with wellhead blowout preventor, so that the rotation
Plug valve is housed in the accommodating space 101 of the cover body 1.
With reference to reference to shown in Fig. 1, it is preferably carried out at one in mode, the outer wall of cover body 1 sets multiple draw rings 5；To
The plug valve is housed in after the step in the accommodating space 101 of the cover body 1, and the method further includes：Will be multiple described
Draw ring 5 is fixedly connected with the ground by connector.
It is preferably carried out at one in mode, the upper end of the stopper section 102 is provided with blowout prevention element 2, the blowout prevention member
Part 2 has hollow channel 201, and the valve 3 of hollow channel 201 described in energy break-make is provided with the blowout prevention element 2；Will be multiple
After the draw ring 5 is fixedly connected with the ground by connector, the method further includes：Close described sleeve pipe gate and the valve
Door 3.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
State, many embodiments and many applications outside the example provided all will be aobvious and easy for a person skilled in the art
See.Therefore, the scope of this teaching should not be determined with reference to foregoing description, but should with reference to preceding claims and this
The four corner of the equivalent that a little claims are possessed determines.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part for subject matter.
Claims (10)
1. a kind of device being used in blowout time limit oil pipe column, the upper end of the oil pipe column is connected with plug valve, described
Wellhead blowout preventor is arranged with outside plug valve, it is characterised in that described device includes：
For the cover body being connected with wellhead blowout preventor, the cover body has accommodating space, and the accommodating space is in the cover body
The plug valve is housed wherein when being connected with the wellhead blowout preventor；
Stopper section is provided with the cover body, the stopper section at least has perspective plane along towards the direction of the plug valve
Product, so that the stopper section has the stop surface in face of the plug valve, the stop surface can push up the upper end of admittedly described plug valve,
It is spacing to be carried out when blowout occurs and causes the plug valve to move up to the oil pipe column.
2. device as claimed in claim 1, it is characterised in that the cover body is in the tubular of lower ending opening, its lower end is radially
Stretch out formed with connecting portion, multiple connecting holes circumferentially arranged are provided with the connecting portion.
3. device as claimed in claim 1, it is characterised in that side wall radially inward constriction shape of the cover body close to upper end
Into the stopper section, the internal face of the stopper section forms the stop surface.
4. the device as described in claim 1 or 3, it is characterised in that the upper end of the stopper section is provided with blowout prevention element, described
Blowout prevention element has hollow channel, and the hollow channel is connected by the stopper section with the accommodating space；The blowout prevention
The valve of hollow channel described in energy break-make is provided with element.
5. device as claimed in claim 4, it is characterised in that the upper end of the blowout prevention element is provided with lifting sub.
6. device as claimed in claim 1, it is characterised in that the inner wall of the cover body convexes to form described stop radially inward
Stopper, the lower surface of the stopper section form the stopper section.
7. device as claimed in claim 1, it is characterised in that the outer wall of the cover body sets multiple draw rings, multiple drawings
Ring can be fixedly connected with the ground by connector.
8. one kind is used for the well head control method in blowout, it is characterised in that including：
When overflow occurs in oil pipe column, plug valve is installed in the upper end of the oil pipe column, and be arranged outside the plug valve
Wellhead blowout preventor；
Close the wellhead blowout preventor, the plug valve and sleeve gate；
When the oil pipe column moves up, open described sleeve pipe lock and carry out open flow；
Device described in claim 1 to 7 any one is connected with wellhead blowout preventor, so that the plug valve is housed in institute
In the accommodating space for stating cover body.
9. method as claimed in claim 8, it is characterised in that the outer wall of the cover body sets multiple draw rings；
After the step that the plug valve is housed in the accommodating space of the cover body, the method further includes：Will be multiple
The draw ring is fixedly connected with the ground by connector.
10. method as claimed in claim 9, it is characterised in that the upper end of the stopper section is provided with blowout prevention element, described anti-
Spray element has hollow channel, and the valve of hollow channel described in energy break-make is provided with the blowout prevention element；
After multiple draw rings are fixedly connected with the ground by connector, the method further includes：
Close described sleeve pipe gate and the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268685.8A CN108035692B (en) | 2017-12-05 | 2017-12-05 | Device for limiting a tubing string during blowout and wellhead control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268685.8A CN108035692B (en) | 2017-12-05 | 2017-12-05 | Device for limiting a tubing string during blowout and wellhead control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108035692A true CN108035692A (en) | 2018-05-15 |
| CN108035692B CN108035692B (en) | 2020-05-08 |
Family
ID=62095096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711268685.8A Active CN108035692B (en) | 2017-12-05 | 2017-12-05 | Device for limiting a tubing string during blowout and wellhead control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035692B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253638A (en) * | 1979-08-02 | 1981-03-03 | Cameron Iron Works, Inc. | Blowout preventer |
| KR100299417B1 (en) * | 1998-08-19 | 2001-11-22 | 조희남 | Apparatus for gathering water per section of water level of underground water and method for gathering water |
| CN2695619Y (en) * | 2004-04-26 | 2005-04-27 | 中国石油化工股份有限公司中原油田分公司采油一厂 | Quick assembling blow-out preventer |
| CN200955373Y (en) * | 2006-09-05 | 2007-10-03 | 中国石化集团胜利石油管理局井下作业二公司 | Oil-water well first-aid injection apparatus |
| CN201334887Y (en) * | 2009-01-19 | 2009-10-28 | 冉杰 | Blowout prevention device for downhole operation in oil-gas well |
| CN201738863U (en) * | 2010-08-01 | 2011-02-09 | 张忠江 | Sucker rod blowout-prevention plug valve for oil field |
| CN202348222U (en) * | 2011-12-07 | 2012-07-25 | 辽宁石油机械制造有限公司 | Lifting device of blowout-prevention plug valve |
| CN204804739U (en) * | 2015-06-01 | 2015-11-25 | 中国石油化工股份有限公司 | Oil pipe prevents gusher mouth pressure relief device |
| CN107313748A (en) * | 2017-05-31 | 2017-11-03 | 中国石油天然气股份有限公司 | Wellhead assembly and its operating method |
-
2017
- 2017-12-05 CN CN201711268685.8A patent/CN108035692B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253638A (en) * | 1979-08-02 | 1981-03-03 | Cameron Iron Works, Inc. | Blowout preventer |
| KR100299417B1 (en) * | 1998-08-19 | 2001-11-22 | 조희남 | Apparatus for gathering water per section of water level of underground water and method for gathering water |
| CN2695619Y (en) * | 2004-04-26 | 2005-04-27 | 中国石油化工股份有限公司中原油田分公司采油一厂 | Quick assembling blow-out preventer |
| CN200955373Y (en) * | 2006-09-05 | 2007-10-03 | 中国石化集团胜利石油管理局井下作业二公司 | Oil-water well first-aid injection apparatus |
| CN201334887Y (en) * | 2009-01-19 | 2009-10-28 | 冉杰 | Blowout prevention device for downhole operation in oil-gas well |
| CN201738863U (en) * | 2010-08-01 | 2011-02-09 | 张忠江 | Sucker rod blowout-prevention plug valve for oil field |
| CN202348222U (en) * | 2011-12-07 | 2012-07-25 | 辽宁石油机械制造有限公司 | Lifting device of blowout-prevention plug valve |
| CN204804739U (en) * | 2015-06-01 | 2015-11-25 | 中国石油化工股份有限公司 | Oil pipe prevents gusher mouth pressure relief device |
| CN107313748A (en) * | 2017-05-31 | 2017-11-03 | 中国石油天然气股份有限公司 | Wellhead assembly and its operating method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108035692B (en) | 2020-05-08 |
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