CN208918504U - One kind is with brill blowout hookup - Google Patents
One kind is with brill blowout hookup Download PDFInfo
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- CN208918504U CN208918504U CN201821431374.9U CN201821431374U CN208918504U CN 208918504 U CN208918504 U CN 208918504U CN 201821431374 U CN201821431374 U CN 201821431374U CN 208918504 U CN208918504 U CN 208918504U
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- connecting cylinder
- sliding sleeve
- hole
- sealing
- spool
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Abstract
The utility model discloses one kind with blowout hookup is bored, and belongs to oil and gas exploitation drilling tool technical field technical field.One kind is with brill blowout hookup, comprising: the lateral wall of connecting cylinder, connecting cylinder is equipped with packing element；The inner sidewall of connecting cylinder is equipped with sliding sleeve, and sliding sleeve is connect by the first locating part with connecting cylinder, and the inner sidewall of connecting cylinder is cooperated by sealing element and sliding sleeve sealing；The inner cavity of sliding sleeve is equipped with internally piloted valve；Sliding sleeve is equipped with first through hole；The second through-hole of connecting cylinder, the second through-hole is between sealing element；Second through-hole and first through hole are staggered by sealing element, and the second through-hole is close to the side where drilling well liquid pipe.The fluid channel that ring cavity flows out outside drill string inner cavity and drill string can be truncated in the utility model automatic when well kick occurs for underground, in time, it does not need operator to be operated manually, avoid due to gas blowout accident caused by operator's misoperation or operation not in time.
Description
Technical field
The utility model relates to oil and gas exploitation drilling tool technical field technical fields, and in particular to one kind is with brill
Blowout hookup.
Background technique
In petroleum natural gas exploration, people still cannot accurately predict the Fluid pressure in stratum to be drilled, make to apply
Work under cover huge risk, formation fluid (oil, gas and water) will lead to blowout out of control, drilling well caused to set once out of hand
Standby damage, jeopardize drilling implementer safely, destroy petroleum resources, pollute natural environment, oil/gas well is caused the serious consequences such as to scrap.
The key for preventing blowout is discovery overflow in time and control overflow in time, and energy quick response plays a role.Blowout prevention
Device is safety devices indispensable in Process of Oil Well Drilling, currently, main blowout control equipment has wellhead blowout preventor group (BOP) and underground
Two kinds of preventer (DBOP).Wellhead blowout preventor mainly has the flashboard blowout prevention of rotating blowout preventer, annular preventer and various models
Device combination.Downhole blow-out preventer mainly include kelly cock, drilling tool back-pressure valve, kelly bar guard valve, drop-in check valve and
Underground check valve etc..
The above preventer mainly underground occur violent well kick when, dependent on the experience and sense of responsibility of operator, and
Control system completes preventer closing well operation on Shi Kaiqi well, to prevent the generation of gas blowout accident.If there is misoperation
Or operation is not in time, it is also possible to lead to gas blowout accident.
Utility model content
The purpose of this utility model is to provide one kind with blowout hookup is bored, and needs behaviour manually to solve existing blowout hookup
Make, operator's misoperation or operation may cause the problem of gas blowout accident occurs not in time.
The technical solution that the utility model solves above-mentioned technical problem is as follows:
One kind is with brill blowout hookup, comprising: connecting cylinder, the both ends of connecting cylinder are connect with drilling well liquid pipe and drill string respectively；
The lateral wall of connecting cylinder is equipped with packing element, and the both ends of packing element, which are sealed with connecting cylinder, to be cooperated；The inner sidewall of connecting cylinder is equipped with sliding sleeve, sliding
The middle part of set is connected by the middle part of the first locating part and connecting cylinder, and the inner sidewall of connecting cylinder passes through at least two sealing elements and cunning
Set sealing cooperation；The inner cavity of sliding sleeve is equipped with internally piloted valve；
The side wall of sliding sleeve is equipped at least one first through hole；The side wall of connecting cylinder be equipped at least one second through-hole, second
Through-hole is between sealing element；Second through-hole is staggered with first through hole by any sealing element, and the second through-hole is close to close to drilling well
Side where liquid pipe.
For the utility model by the way of automatically controlling, the channel that cutting borehole fluid sprays is not necessarily to ground handling operator
Rule of thumb judge and opens control system on well.Internally piloted valve can be opened with pressure, in disconnected and then opening, truncation sliding sleeve
Chamber.The both ends of connecting cylinder are connect with drilling well liquid pipe and drill string respectively, and the drilling fluid with certain pressure enters from drilling well liquid pipe
After connecting cylinder, enter back into drill string, finally return to ground from back to the fluid chamber, back to the fluid chamber be open hole eye cavity or open hole eye in be arranged
Casing cavity.Due to the presence of sealing cooperation, downhole fluid will not flow between connecting cylinder and packing element from the second through-hole
Space.When creeping into normal operation, drilling fluid is by internally piloted valve, and the drilling fluid with pressure opens internally piloted valve, drilling fluid energy
Internally piloted valve smoothly is flowed through, when downhole fluid medium increases suddenly, drilling fluid flows backwards in connecting cylinder and accelerates in back to the fluid chamber
Flowing, when down-hole pressure is greater than drilling fluid original pressure, downhole fluid closes internally piloted valve, prevents downhole fluid from drilling well liquid pipe
Outflow.With the increase of downhole fluid pressure, downhole fluid will push sliding sleeve, when sliding sleeve cuts the first locating part, sliding sleeve
It moves to the ground, when first through hole, which crosses connecting cylinder, to be sealed cooperation position with sliding sleeve and be connected to the second through-hole, downhole fluid
It flows successively through first through hole and the second through-hole and flows into the space between connecting cylinder and packing element, fluid supports packing element greatly, until glue
Cylinder is contacted with guide shell, and back to the fluid chamber is truncated, and fluid is prevented to flow out from back to the fluid chamber.The utility model can occur in underground
Channel automatic when well kick, that truncation fluid is flowed out out of drill string and outside drill string in time, does not need operator and is operated manually,
It avoids due to gas blowout accident caused by operator's misoperation or operation not in time.
The utility model controls pin value for shear by setting pin diameter and quantity, according to specific well conditions design
It is fixed.After down-hole pressure control, Fluid pressure reduces, and packing element retraction unlock, withdrawing device is further continued for operation after filling pin again.
Further, above-mentioned internally piloted valve includes valve seat, spool and limit base；Valve seat and the setting of limit base interval, and
Connect with sliding sleeve, valve seat and limit base respectively close to drilling well liquid pipe and drill string respectively where side；One end of spool and valve
Seat sealing cooperation, the other end of spool are slidably matched through limit base and with limit base.
The internally piloted valve of the utility model can realize opening and closing in the case where pressure at both sides difference, thus be truncated,
Open the inner cavity of sliding sleeve.Valve seat and limit base are arranged on sliding sleeve, can be moved with the movement of sliding sleeve, and valve seat is close
Drilling well liquid pipe, limit base is close to drill string.One end of spool can cooperate with valve base sealing, and the other end can be slided on limit base
It is dynamic.When drilling well normal operation, drilling fluid pushes spool, makes spool far from valve seat, and internally piloted valve is opened.When well kick occurs for underground,
Downhole fluid pressure is greater than the original pressure of drilling fluid, and downhole fluid pushes spool, cooperates spool and valve base sealing, internally piloted valve closes
It closes.
Further, the inner cavity of above-mentioned valve seat is equipped with conical seal (contact) face, and the outside of valve seat and sliding sleeve sealing cooperate；Spool
One end is equipped with the spherical surface to match with conical seal (contact) face, and the other end of spool is in the shape of a rod.
The internally piloted valve of the utility model has good sealing effect by the way of ball face sealing.Spool and limit base
One end of connection is in the shape of a rod, that is, can be carried out sliding, and can be oriented to, and spool is enable to cooperate well with valve seat.
Further, above-mentioned spool one end outer sheath in the shape of a rod is equipped with spring, and the both ends of spring are equipped with spool respectively
One end of spherical surface is connected with limit base.
The spring of the utility model can provide pretightning force for the sealing of spool and valve seat, separated when well kick occurs
Spool and valve seat can be quickly sealed.
Further, the inner sidewall of above-mentioned sliding sleeve is equipped with annular groove and boss, is equipped with circlip in annular groove, limit base is located at circlip
It is clamped between boss and through circlip and boss and sliding sleeve.
Further, the lateral surface of above-mentioned sliding sleeve is equipped with limiting slot, and connecting cylinder is equipped with the second locating part, the second locating part
One end is connect with connecting cylinder, and the other end of the second locating part is located in limiting slot.
Second locating part of the utility model is used to limit the excessive movement of sliding sleeve, after the first locating part is cut, the
Two locating parts move in limiting slot, and after first through hole is connected to the second through-hole, the second locating part is limited the end limitation of slot,
It avoids over-travel and first through hole and the second through-hole is caused to be separated by sealing element.
Further, above-mentioned first locating part and the second locating part, which are sealed with connecting cylinder, cooperates.
Further, above-mentioned first locating part and the second locating part are pin.
Further, the lateral wall of above-mentioned connecting cylinder is set there are two the rubber tube seat for being located at packing element both ends, and rubber tube seat is equipped with solid
Determine the outer inclined-plane of packing element.
The packing element of the utility model can swell in the effect of pressure, and rubber tube seat fixes the both ends of packing element, prevent packing element
End is swollen and the case where pressure release occurs, cannot be swollen so as to cause packing element to the degree of truncation guide shell.
Further, the lateral surface of the medial surface and connecting cylinder of above-mentioned rubber tube seat seals cooperation.
The end of the packing element of the utility model may swell, and under the effect of the pressure, packing element is in rubber tube seat
It is extruded at inclined-plane, to be sealed, fluid can be flowed out from the cavity that rubber tube seat and connecting cylinder are formed at this time, to let out
Pressure, by the way that the lateral surface sealing of the medial surface of rubber tube seat and connecting cylinder can be prevented such happen.
The utility model has the following beneficial effects:
The utility model can automatic when well kick occurs for underground, timely truncation fluid ring cavity outside drill string inner cavity and drill string
The channel of outflow does not need operator and is operated manually, and avoids due to operator's misoperation or operates not in time
Caused gas blowout accident.
Detailed description of the invention
Fig. 1 is the utility model with the structural schematic diagram for boring blowout hookup；
Fig. 2 is the portion the A enlarged drawing of Fig. 1；
Fig. 3 is the portion the B enlarged drawing of Fig. 1；
Fig. 4 is the internally piloted valve of the utility model and the attachment structure schematic diagram of sliding sleeve；
Fig. 5 is the sliding sleeve of the utility model and the attachment structure schematic diagram of limit base；
Fig. 6 is the utility model with the attachment structure schematic diagram for boring blowout hookup and casing.
In figure: 100- casing；110- back cavity；200- is with brill blowout hookup；210- connecting cylinder；211- second is logical
Hole；220- packing element；230- sliding sleeve；231- first through hole；232- limiting slot；233- annular groove；234- boss；240-
One locating part；250- internally piloted valve；251- valve seat；252- spool；253- limit base；254- conical seal (contact) face；255- ball
Face；256- spring；257- circlip；The second locating part of 260-；270- rubber tube seat；280- sealing element；290- drilling rod connecting
Head.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
Embodiment
Fig. 1 ~ Fig. 3 is please referred to, includes connecting cylinder 210, one end of connecting cylinder 210 and drilling well liquid pipe with blowout hookup 200 is bored
Connection, the other end are threadedly coupled with tool joint 290, and for connecting drill string, tool joint 290 passes through O-ring for tool joint 290
It seals and cooperates with connecting cylinder 210.The lateral wall of connecting cylinder 210 is equipped with packing element 220, the both ends of packing element 220 and connecting cylinder 210 it is outer
Side wall is tightly connected.The inner sidewall of connecting cylinder 210 is equipped with sliding sleeve 230, and sliding sleeve 230 can be slided with the inner sidewall of connecting cylinder 210
Cooperation.The inner sidewall of sliding sleeve 230 is equipped with internally piloted valve 250, and internally piloted valve 250 can be automatically opened or be turned off with the change of pressure, uses
In the inner cavity for being truncated or opening sliding sleeve 230.
The lateral wall of connecting cylinder 210 is additionally provided with 2 rubber tube seats, 270,2 rubber tube seats 270 and is located at the two of packing element 220
End, 2 rubber tube seats 270 limit packing element 220 at both ends.Rubber tube seat 270 is equipped with outer inclined-plane, i.e. inclined-plane to rubber tube seat 270
Inner inclination, the end of packing element 220 carries out radial limit, the end of packing element 220 avoided to deform when being pressurized by outer inclined-plane
Greatly, to be disconnected cylinder 210, simultaneously as the effect of internal pressure, enables packing element 220 to fit closely with outer inclined-plane, reaches
To the effect of sealing.The inner sidewall of rubber tube seat 270 is sealed by the lateral wall of O-ring and connecting cylinder 210 to be cooperated.
The side wall of sliding sleeve 230 is equipped with multiple first through hole 231.The side wall of connecting cylinder 210 is equipped with multiple second through-holes 211,
Second through-hole 211 and first through hole 231 are arranged in a staggered manner, and make the second through-hole 211 close to drill string one end, first through hole 231 is close to brill
Well liquid pipe one end.Connecting cylinder 210 is connect by four sealing elements 280 with sliding sleeve 230, and four sealing elements 280 separate two-by-two, point
It is not placed in the both ends of the second through-hole 211, it is close by two of close drill string one end between the second through-hole 211 and first through hole 231
Sealing 280 separates.In the present embodiment, sealing element 280 is O-ring.In the other embodiments of the utility model, according to work
Condition, the sealing element 280 that different number can be set are sealed；Sealing element 280 can also be gasket seal etc..
Sliding sleeve 230 is fixedly connected by the first locating part 240 with connecting cylinder 210, and the first locating part 240 is cut by sliding sleeve 230
It has no progeny, sliding sleeve 230 can slide in the inner cavity of connecting cylinder 210.The lateral wall of sliding sleeve 230 is additionally provided with limiting slot 232.Connecting cylinder
210 side wall is equipped with the second locating part 260, and one end of the second locating part 260 is connect with connecting cylinder 210, and the other end is placed in limit
In slot 232.Second locating part 260 is used to limit the moving distance of sliding sleeve 230.First locating part 240 and the second locating part 260
Installed since the lateral wall of connecting cylinder 210, and the first locating part 240 and the second locating part 260 by O type circle with
Connecting cylinder 210 is tightly connected.In the present embodiment, the first locating part 240 and the second locating part 260 are pin.
Referring to figure 4. and Fig. 5, internally piloted valve 250 include valve seat 251, spool 252 and limit base 253.Valve seat 251 and limit
Position seat 253 is arranged along the extending direction interval of sliding sleeve 230, and is fixedly connected with sliding sleeve 230, and valve seat 251 is close to drilling fluid
Side where pipe, limit base 253 is close to the side where drill string.One end of spool 252 and the sealing of valve seat 251 cooperate, another
End is slidably matched with limit base 253.
The outside of valve seat 251 is fixedly connected with sliding sleeve 230 by screw thread and is matched by O-ring and the sealing of sliding sleeve 230
It closes.The port corresponding with limit base 253 of valve seat 251 is equipped with conical seal (contact) face 254.The cross-sectional area of limit base 253 is less than sliding sleeve
The cross-sectional area of 230 inner cavities makes limit base 253 that the inner cavity of sliding sleeve 230 will not be truncated, and will not prevent the flowing of fluid.Limit base
253 middle part aperture, outside are contacted with the inner sidewall of sliding sleeve 230.The inner sidewall of sliding sleeve 230 is equipped with annular groove 233 and boss 234,
Circlip 257 is equipped in annular groove 233, limit base 253 is stuck in the space that circlip 257 and boss 234 are formed, make limit base 253 with
Sliding sleeve 230 is fixedly connected.One end of spool 252 is equipped with spherical surface 255, and the other end is in the shape of a rod.Spherical surface 255 and conical seal (contact) face 254
Sealing cooperation.The one end in the shape of a rod of spool 252 is placed in the hole at 253 middle part of limit base, slides spool 252 and limit base 253
Cooperation, the outside of the one end in the shape of a rod of spool 252 are equipped with spring 256, and the both ends of spring 256 are equipped with spherical surface with spool 252 respectively
255 one end and limit base 253 connect.
Fig. 6 is please referred to, is arranged in casing 100 with blowout hookup 200 is bored, casing 100 is arranged in open hole eye, casing
100 lumen is the back cavity 110 of drilling fluid return.Obviously, casing 100 can also be set up directly in open hole eye, open hole
The cavity of eye is back cavity 110.
Working principle when the normal drilling well of the utility model: after drilling fluid enters connecting cylinder 210 from drilling well liquid pipe, drilling well
Liquid squeezes spool 252, and spring 256 is compressed, and internally piloted valve 250 is opened, and drilling fluid passes through internally piloted valve 250 and enters drill string
In, finally return to ground by back cavity 110, due to the presence of each seal member, drilling fluid will not enter packing element 220 with connect
In cavity between cylinder 210.
Working principle when well kick occurs for the utility model: when well kick occurs for underground, downhole fluid pressure is higher, will lead to
Fluid in connecting cylinder 210 occurs reflux and accelerates the flow velocity of fluid in back cavity 110.Spool 252 in fluid compression and
Under the collective effect of spring 256, seals and cooperate with valve seat 251, and pressure is bigger, the sealing between spool 252 and valve seat 251
Effect is better, realizes pressure self-sealing.With the increase of pressure, fluid forces internally piloted valve 250, the stress effect of internally piloted valve 250
On sliding sleeve 230, pressure increases to setting value, and sliding sleeve 230 cuts the first locating part 240, and the second locating part 260 is limiting
Slided in slot 232, until be limited slot 232 end limit, first through hole 231 is connected to the second through-hole 211 at this time, fluid into
Enter into the cavity between packing element 220 and connecting cylinder 210, and by packing element 220 support greatly, until packing element 220 be truncated back cavity 110,
To which the channel of drill string inner cavity and the outer ring cavity outflow of drill string be truncated, the ejection of downhole fluid is avoided.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of with brill blowout hookup characterized by comprising connecting cylinder (210), the both ends difference of the connecting cylinder (210)
It is connect with drilling well liquid pipe and drill string；The lateral wall of the connecting cylinder (210) is equipped with packing element (220), and the two of the packing element (220)
End, which is sealed with the connecting cylinder (210), to be cooperated；The inner sidewall of the connecting cylinder (210) is equipped with sliding sleeve (230), the sliding sleeve
(230) middle part is connect by the first locating part (240) with the middle part of the connecting cylinder (210), the connecting cylinder (210) it is interior
Side wall is cooperated by least two sealing elements (280) and the sliding sleeve (230) sealing；The inner cavity of the sliding sleeve (230) is equipped with certainly
It controls valve (250)；
The side wall of the sliding sleeve (230) is equipped at least one first through hole (231)；The side wall of the connecting cylinder (210) is equipped with extremely
Few second through-hole (211), second through-hole (211) is between the sealing element (280)；Second through-hole
(211) it is staggered with the first through hole (231) by any sealing element (280), second through-hole (211) is close to drilling well liquid pipe
The side at place.
2. according to claim 1 with brill blowout hookup, which is characterized in that the internally piloted valve (250) includes valve seat
(251), spool (252) and limit base (253)；The valve seat (251) and the setting of the limit base (253) interval, and
Connect with the sliding sleeve (230), the valve seat (251) and the limit base (253) respectively close to drilling well liquid pipe and drill string respectively
The side at place；One end of the spool (252) and the valve seat (251) sealing cooperate, and the other end of the spool (252) passes through
It wears the limit base (253) and is slidably matched with the limit base (253).
3. according to claim 2 with brill blowout hookup, which is characterized in that the inner cavity of the valve seat (251) is equipped with taper
Sealing surface (254), the outside of the valve seat (251) and the sliding sleeve (230) sealing cooperate；One end of the spool (252) is set
There is the spherical surface (255) to match with the conical seal (contact) face (254), the other end of the spool (252) is in the shape of a rod.
4. according to claim 3 with brill blowout hookup, which is characterized in that outside the spool (252) one end in the shape of a rod
Side is arranged with spring (256), the both ends of the spring (256) respectively with the spool (252) be equipped with spherical surface (255) one end and
Limit base (253) connection.
5. according to claim 2 with brill blowout hookup, which is characterized in that the inner sidewall of the sliding sleeve (230) is equipped with ring
Slot (233) and boss (234) are equipped with circlip (257) in the annular groove, the limit base (253) be located at the circlip (257) and
It is clamped between boss and by the circlip (257) and boss and the sliding sleeve (230).
6. according to claim 5 with brill blowout hookup, which is characterized in that the lateral surface of the sliding sleeve (230) is equipped with limit
Position slot (232), the connecting cylinder (210) be equipped with the second locating part (260), one end of second locating part (260) with it is described
Connecting cylinder (210) connection, the other end of second locating part (260) are located in the limiting slot (232).
7. according to claim 6 with boring blowout hookup, which is characterized in that first locating part (240) and described the
Two locating parts (260), which are sealed with the connecting cylinder (210), to be cooperated.
8. according to claim 7 with boring blowout hookup, which is characterized in that first locating part (240) and described the
Two locating parts (260) are pin.
9. according to any one of claims 1 to 8 with brill blowout hookup, which is characterized in that outside the connecting cylinder (210)
Side wall is set there are two the rubber tube seat (270) for being located at the packing element (220) both ends, and the rubber tube seat (270) is equipped with the fixed glue
The outer inclined-plane of cylinder (220).
10. according to claim 9 with brill blowout hookup, which is characterized in that the medial surface of the rubber tube seat (270) and institute
State the lateral surface sealing cooperation of connecting cylinder (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821431374.9U CN208918504U (en) | 2018-08-31 | 2018-08-31 | One kind is with brill blowout hookup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821431374.9U CN208918504U (en) | 2018-08-31 | 2018-08-31 | One kind is with brill blowout hookup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208918504U true CN208918504U (en) | 2019-05-31 |
Family
ID=66703618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821431374.9U Active CN208918504U (en) | 2018-08-31 | 2018-08-31 | One kind is with brill blowout hookup |
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| Country | Link |
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| CN (1) | CN208918504U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979582A (en) * | 2018-08-31 | 2018-12-11 | 四川昆仑石油设备制造有限公司 | One kind is with brill blowout hookup |
| CN111561295A (en) * | 2020-05-20 | 2020-08-21 | 大庆丹诺石油科技开发有限公司 | Hydraulic oil extraction double-channel underwater safety valve for ocean oil well |
-
2018
- 2018-08-31 CN CN201821431374.9U patent/CN208918504U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979582A (en) * | 2018-08-31 | 2018-12-11 | 四川昆仑石油设备制造有限公司 | One kind is with brill blowout hookup |
| CN111561295A (en) * | 2020-05-20 | 2020-08-21 | 大庆丹诺石油科技开发有限公司 | Hydraulic oil extraction double-channel underwater safety valve for ocean oil well |
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