CN209228337U - A kind of dissolvable bridge plug - Google Patents
A kind of dissolvable bridge plug Download PDFInfo
- Publication number
- CN209228337U CN209228337U CN201790000496.XU CN201790000496U CN209228337U CN 209228337 U CN209228337 U CN 209228337U CN 201790000496 U CN201790000496 U CN 201790000496U CN 209228337 U CN209228337 U CN 209228337U
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- CN
- China
- Prior art keywords
- slips
- bridge plug
- lower contact
- top connection
- dissolvable bridge
- Prior art date
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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
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
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- 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
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
- E21B33/134—Bridging plugs
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Abstract
A kind of dissolvable bridge plug for oil/gas well segmentation transformation, with hollow top connection (11) and lower contact (12), throw-out collar (18), the first slips (13), the first cone sleeve (15), packing element (17), the second cone sleeve (16) and the second slips (14) are successively arranged on top connection (11) outer wall, which voluntarily can dissolve or degrade in oil/gas well down-hole liquid environment.
Description
Technical field
The utility model relates to downhole tool technical fields, and in particular to a kind of dissolvable bridge plug.
Background technique
In the transformation operation of oil/gas well staged fracturing, it will usually use the work of composite bridge plug or cast iron bridge plug as segmentation
Tool.Both bridge plugs are each advantageous, such as composite bridge plug, have the characteristics that brill mill is fireballing, must after fracturing work terminates
These composite bridge plugs must be ground off by coiled tubing quick drill, form the wellbore of full-bore.
The characteristics of cast iron bridge plug being used in staged fracturing transformation operation is usually big orifice bridge plug, this bridge plug is
Interior latus rectum is big, can be after the completion of pressure break, and directly the row of returning goes into operation.With the increase of oil/gas well productive life, the oil gas of oil/gas well
Yield also declines therewith, and the secondary of oil/gas well is transformed into the important way for increasing oil gas well production, however, logical greatly using cast iron
The pit shaft of diameter bridge plug staged fracturing can form undergauge, the i.e. internal diameter of cast iron big orifice bridge plug, in this way to secondary transformation in pit shaft
Construction method formed limitation, the effect of secondary transformation is impacted, and the drilling and grinding operation of cast iron bridge plug is extremely difficult.
Composite bridge plug must be bored after pressing crack construction and be ground off；Although cast iron big orifice bridge plug can be straight without boring mill
Operation is connect, but it makes pit shaft undergauge, causes limitation to the secondary transformation of oil/gas well, and the drilling and grinding operation of cast iron bridge plug is non-
It is often difficult.
Utility model content
(1) the technical problem to be solved by the utility model is to existing composite bridge plug must incite somebody to action after pressing crack construction
Its brill is ground off；Although cast iron big orifice bridge plug can directly go into operation without boring mill, it makes pit shaft undergauge, to the secondary of oil/gas well
Limitation is caused, and the drilling and grinding operation of cast iron bridge plug is extremely difficult.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provides a kind of dissolvable bridge plug, and the segmentation for oil/gas well changes
It makes, including the first slips, packing element and soluble top connection, lower contact and the first cone sleeve, the top connection and described
Lower contact is tubular structure, forms the first hollow cavity of both ends open inside the top connection, is formed in the lower contact
Second hollow cavity open at one end, one end of the top connection are inserted into the second hollow cavity of the lower contact, it is described on
The outer wall of the connector other end is equipped with limiting section, and limiting section described in lateral edge to the direction of lower contact successively covers outside the top connection
Equipped with the first slips, the first cone sleeve and packing element；
First slips connects with the limiting section, and the packing element connects with the lower contact, and first slips is in
Wedge shape, the first cone sleeve are equipped with the first inclined-plane cooperated with first slips, and first inclined-plane is along the limit
Position portion to the direction of the packing element tilts from inside to outside.
The utility model has the beneficial effects that the utility model provide a kind of dissolvable bridge plug, including the first slips, packing element with
And soluble top connection, lower contact and the first cone sleeve, it can be matched with conventional setting tool, by dissolvable bridge plug
It is connected by adapter with setting tool, dissolvable bridge plug transfers to designated position by tools such as cable, oil pipe, steel wires, so
It is set afterwards by setting tool, dissolvable bridge plug stops dissolvable bridge plug and oil gas after a certain period of time in its former setting position
Dissolution or degradation reaction occur for the liquid contact in well, are finally completely dissolved or degrade, and realize that oil/gas well casing inner diameter is unobstructed.With
The mode that existing no killing well device is sealed is compared, the setting tool energy of dissolvable bridge plug routine provided by the present application
The sealing for enough realizing pit shaft, does not need to use complicated no killing well device, operating cost is greatly saved, and can dissolve simultaneously
The process that bridge plug is set is simple, flow chart is few, can save the activity duration, operating efficiency is improved, when dissolvable bridge plug is set
Later, firm with internal surface of sleeve pipe anchoring, the pressure from dissolvable bridge plug lower part during the packing of oil gas well shaft is born, at this time may be used
To carry out fracturing work, after pressing crack construction, without bore mill, dissolvable bridge plug can oil/gas well down-hole liquid environment from
Row dissolution or degradation, the full-bore of pit shaft can be realized without drilling and grinding operation, can be saved the activity duration, be saved construction cost
With can effectively accelerate bridge plug dissolution time using top connection and the hollow design of lower contact in solvable bridge plug structure.
Further, the dissolvable bridge plug further includes soluble throw-out collar, and the throw-out collar is socketed in the top connection
In outside wall surface, first slips is connected by the throw-out collar with the limiting section.
Further, the dissolvable bridge plug further includes the second slips and the second cone sleeve, second slips and
Two cone sleeves are successively socketed in the outside wall surface of the top connection by the packing element to the direction of the lower contact, the packing element
Connected by second slips and the second cone sleeve with the lower contact, the wedge shaped shape of the second slips, described second
Cone sleeve is equipped with the second inclined-plane cooperated with second slips, and second inclined-plane is along the packing element to the lower contact
Direction ecto-entad inclination.
Further, first slips and the second slips include slip spider and slips tooth, and the slips tooth setting exists
On the slip spider.
Further, the lower contact is equipped with relative to the other end of the open end and is connected to second hollow cavity
Through-hole, one end that the top connection is equipped with positive stop end is equipped with cone shaped countersink, and the internal diameter of the cone shaped countersink is by first
One end of cavity body is gradually increased outward, and the outside of the cone shaped countersink is semi-circular shape structure.
Further, closeouts are equipped in second hollow cavity, the closeouts can be in second hollow cavity
It rolls in vivo, to open or close the through-hole.
Further, the closeouts are that can dissolve ball, and the diameter of the ball is greater than the internal diameter of the through-hole.
Further, it is additionally provided with bar in second hollow cavity, the bar is for stopping the ball to enter the
In one hollow cavity.
Further, plug is equipped in the through-hole, the plug can block the through-hole.
Further, the packing element is made of rubber material, and the top connection, lower contact and the cone sleeve are by having
The soluble metal or degradable polymer for having mechanical strength are made.
Detailed description of the invention
The advantages of the utility model is above-mentioned and/or additional aspect will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the cross-sectional view of dissolvable bridge plug described in embodiment one；
Fig. 2 is the cross-sectional view of dissolvable bridge plug described in embodiment two；
Fig. 3 is the cross-sectional view of dissolvable bridge plug described in embodiment three.
Wherein corresponding relationship of the Fig. 1 into Fig. 3 between appended drawing reference and component names are as follows:
1, solvable bridge plug, 11, top connection, the 111, first hollow cavity, 112, cone shaped countersink, 113, screw thread of giving up, 114,
Limiting section, 12, lower contact, the 121, second hollow cavity, 122, bar, 123, closeouts, 124, through-hole, the 13, first slips,
14, the second slips, the 15, first cone sleeve, the 16, second cone sleeve, 17, packing element, 18, throw-out collar, 19, plug, 20, drain
Hole.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
As shown in Figure 1 to Figure 3, the utility model provides a kind of dissolvable bridge plug, and the segmentation for oil/gas well is transformed, including
First slips 13, packing element 17 and soluble top connection 11, lower contact 12 and the first cone sleeve 15,11 He of top connection
The lower contact 12 is tubular structure, the first hollow cavity 111 of both ends open is formed inside the top connection 11, under described
Form the second hollow cavity 121 open at one end in connector 12, the of the lower contact 12 is inserted into one end of the top connection 11
In two hollow cavities 121, the outer wall of 11 other end of top connection is equipped with limiting section 114, in the outer lateral edge of the top connection 11
The limiting section 114 to the direction of lower contact 12 is successively arranged with the first slips 13, the first cone sleeve 15 and packing element 17；It is described
First slips 13 connects with the limiting section 114, and the packing element 17 connects with the lower contact 12, and first slips 13 is in wedge
Shape, the first cone sleeve are equipped with the first inclined-plane cooperated with first slips 13, and first inclined-plane is along the limit
The direction of position portion 114 to the packing element 17 tilts from inside to outside.
Dissolvable bridge plug provided by the utility model, including the first slips 13, packing element 17 and soluble top connection 11,
Lower contact 12 and the first cone sleeve 15 can be matched with conventional setting tool, by dissolvable bridge plug by adapter with
Setting tool is connected, and dissolvable bridge plug transfers to designated position by tools such as cable, oil pipe, steel wires, then by setting work
Tool is set, and dissolvable bridge plug stops after a certain period of time in its former setting position, the liquid in dissolvable bridge plug and oil/gas well
Dissolution or degradation reaction occur for contact, are finally completely dissolved or degrade, and realize that oil/gas well casing inner diameter is unobstructed.It is not pressed with existing
The mode that well device is sealed is compared, and the setting tool of dissolvable bridge plug routine provided by the present application can be realized as pit shaft
Sealing, do not need to use complicated no killing well device, be greatly saved operating cost, while dissolvable bridge plug is set
Process is simple, flow chart is few, can save the activity duration, operating efficiency is improved, after dissolvable bridge plug is set, with casing
Inner wall anchoring is firm, bears the pressure from dissolvable bridge plug lower part during the packing of oil gas well shaft, can carry out pressure break at this time
Operation, after pressing crack construction, without boring mill, dissolvable bridge plug voluntarily can be dissolved or be dropped in oil/gas well down-hole liquid environment
Solution, the full-bore of pit shaft can be realized without drilling and grinding operation, can be saved the activity duration, be saved operating expenses, solvable bridge plug 1
Using the design that top connection 11 and lower contact 12 are hollow in structure, it can effectively accelerate bridge plug dissolution time.
Embodiment one
As shown in Figure 1, present embodiments providing a kind of dissolvable bridge plug, the segmentation for oil/gas well is transformed, including first
Slips 13, packing element 17 and soluble top connection 11, lower contact 12 and the first cone sleeve 15, the top connection 11 and described
Lower contact 12 is tubular structure, and the first hollow cavity 111 of both ends open, the lower contact are formed inside the top connection 11
The second hollow cavity 121 open at one end is formed in 12, one end of the top connection 11 is inserted into the second of the lower contact 12
In cavity body 121, the outer wall of 11 other end of top connection is equipped with limiting section 114, described in the outer lateral edge of the top connection 11
Limiting section 114 to the direction of lower contact 12 is successively arranged with the first slips 13, the first cone sleeve 15 and packing element 17；Described first
Slips 13 connects with the limiting section 114, and the packing element 17 connects with the lower contact 12, and first slips 13 is wedge shaped
Shape, the first cone sleeve are equipped with the first inclined-plane cooperated with first slips 13, and first inclined-plane is along the limit
The direction of portion 114 to the packing element 17 tilts from inside to outside.
Dissolvable bridge plug provided by the utility model can match with conventional setting tool, dissolvable bridge plug is led to
It crosses adapter to be connected with setting tool, dissolvable bridge plug transfers to designated position by tools such as cable, oil pipe, steel wires, then
It is set by setting tool, dissolvable bridge plug stops dissolvable bridge plug and oil/gas well after a certain period of time in its former setting position
In liquid contact occur dissolution or degradation reaction, be finally completely dissolved or degrade, realize oil/gas well casing inner diameter it is unobstructed.With it is existing
The mode that some no killing well devices are sealed is compared, and the setting tool of dissolvable bridge plug routine provided by the present application can
The sealing for realizing pit shaft, does not need to use complicated no killing well device, operating cost is greatly saved, while can dissolve bridge
The process that plug is set is simple, flow chart is few, can save the activity duration, operating efficiency is improved, when dissolvable bridge plug sets it
Afterwards, firm with internal surface of sleeve pipe anchoring, the pressure from dissolvable bridge plug lower part during the packing of oil gas well shaft is born, it at this time can be with
Carry out fracturing work, after pressing crack construction, without bore mill, dissolvable bridge plug can oil/gas well down-hole liquid environment voluntarily
Dissolution or degradation, the full-bore of pit shaft can be realized without drilling and grinding operation, can be saved the activity duration, be saved operating expenses,
Using the design that top connection 11 and lower contact 12 are hollow in solvable 1 structure of bridge plug, it can effectively accelerate bridge plug dissolution time.
As shown in Figure 1, the dissolvable bridge plug further includes soluble throw-out collar 18, the throw-out collar 18, which is socketed on described, to be connect
In first 11 outside wall surface, first slips 13 is connected by the throw-out collar 18 with the limiting section 114, wherein the limiting section
114 outer diameter is greater than the outer diameter of the top connection 11, this makes it possible to by throw-out collar 18 described in 114 card column of limiting section, is using
When, solvable bridge plug 1 cooperates.Dissolvable bridge plug cooperation, which is set, enters well after adapter is connect with setting tool together, reach design
After setting depth, so that it is generated certain thrust by triggering setting tool, push throw-out collar 18 to move down, packing element 17 will
It is squeezed and generates elastic deformation and contact to form initial sealing with internal surface of sleeve pipe.When thrust is greater than the rupture of upper and lower slip spider
After power, slip spider will rupture, and move along the conical surface of upper lower cone, until slips tooth is closely anchored with internal surface of sleeve pipe；
When the thrust that setting tool provides continues to increase, the connection screw thread limit stress of adapter and central tube is set until being greater than, the
Screw thread 113 of giving up in one hollow cavity 111 is pulled off destruction, sets, movement completion of giving up, and bridge plug stays in design and sets depth
Then degree completes perforating job and recycles setting tool.After the completion of bridge plug is set, pressure break pump truck pump note fracturing fluid is continued through
Body, due to designing inside bridge plug for blind hole, outside is that packing element 17 designs, so compression packing element 17 has carried out full pit shaft after setting
Face blocks, without pitching can pressure break, these fracturing liquids can be entered stratum by preforation tunnel, start fracturing stratum, when setting
Meter proppant total amount is all pumped into stratum, then completes pressing crack construction, steps be repeated alternatively until that all layers of position transformation terminate.To institute
After having the transformation of layer position to terminate, solvable bridge plug 1 can be completely dissolved in the liquid of stratum, be made again unobstructed inside pit shaft.
The dissolvable bridge plug further includes the second slips 14 and the second cone sleeve 16, second slips 14 and second
Cone sleeve 16 is successively socketed in the outside wall surface of the top connection 11 by the direction of the packing element 17 to the lower contact 12, institute
It states packing element 17 and is connected by second slips 14 and the second cone sleeve 16 with the lower contact 12, second slips 14 is in
Wedge shape, the second cone sleeve are equipped with the second inclined-plane cooperated with second slips 14, and second inclined-plane is along institute
State packing element 17 to the lower contact 12 direction ecto-entad tilt, slips described in the present embodiment house set there are two, two card
The two sides of the packing element 17 watt are set, while two slips cooperate with corresponding cone sleeve respectively, it is dual-grip in this way to set
Meter can bidirectional bearing, solvable bridge plug 1 anchors more stable.
As shown in Figure 1, first slips 13 and the second slips 14 include slip spider and slips tooth, the slips tooth is set
It sets on the slip spider, is more conducively engaged with internal surface of sleeve pipe, slips denticle product is very small, using the row of returning, while the slips
Seat and slips tooth are monolithic construction, optimize the mechanism of entire slips, wherein first slips and the second slips are edge
Toothing, above 3 teeth, below 4 teeth；Use cermet for slips tooth, (slip spider is still soluble material) hardness is high,
It is small in size, it is reasonably distributed, it is more efficient to set.
As shown in Figure 1, the lower contact 12 is equipped with and second hollow cavity relative to the other end of the open end
The through-hole 124 of 121 connections, one end that the top connection 11 is equipped with positive stop end are equipped with cone shaped countersink 112, the cone shaped countersink 112
Internal diameter by being gradually increased outward close to one end of the first hollow cavity 111, and the outside of the cone shaped countersink is semicircular ring
Shape structure, can according to site requirement, when if necessary to bore mill, one bridge plug of upper wellbore pushed away convenient for drilling tool get into it is following
A bridge plug after, two bridge plugs meet it is engaged stuck, be conducive to bore mill；And it is also set in second hollow cavity 121
There are closeouts 123, the closeouts 123 can roll in second hollow cavity 121, to check card or close the through-hole
124, first hollow cavity 111 is blocked by closeouts 123 in this way, the two sides up and down of pit shaft described in parting seal, which are realized, to be sat
Envelope is given up, and completion sets operation；Preferably, as shown in Figure 1, the closeouts 123 be can dissolve ball, the ball it is straight
Diameter is greater than the internal diameter of the through-hole 124, and the first hollow cavity 111 and the second hollow cavity 121 are separated by ball, is not allowed
The two connection, and then separate the two sides up and down of pit shaft；As shown in Figure 1, it is additionally provided with bar 122 in second hollow cavity 121,
By the bar 122 for stopping the ball to enter in the first hollow cavity 111, it is ensured that the stability that sets and reliable
Property；Simultaneously due to being to realize to prevent ball in the second hollow cavity 121 of lower contact 12 in the present embodiment, so can
When molten bridge plug 1 sets predeterminated position, the slave upper section of latus rectum in bridge plug can be realized to the closure of lower end without pitching.Such as figure
1 to shown in Fig. 3, and the lower contact is equipped with the drainage hole 20 being connected to the through-hole 124 far from one end of the opening, sets
Afterwards, according to site requirement, the row's of returning wellbore fluid is conducive to when needing.
Wherein described herein, the packing element 17 is made of rubber material, the top connection 11, lower contact 12 and described
Cone sleeve by with mechanical strength soluble metal or degradable polymer be made, the slips tooth is by cermet material
It is made, wherein the throw-out collar 18, the second slips 14 and the second cone sleeve 16 are also by the soluble metal with mechanical strength
Or degradable polymer is made, can dissolve bridge 2 voluntarily can dissolve or degrade in oil/gas well down-hole liquid environment, and it is dissolved
Or degradation time can be pre-adjusted by dissolution to soluble metal material and solvable rubber material or degradation speed, be reached
The purpose for dissolving or degrading within the set time to dissolvable bridge plug makes the unblocked plug of casing inner diameter, and wellbore is made to realize all-pass
Diameter.
In this way when carrying out pit shaft temporary sealing using the dissolvable bridge plug, dissolvable bridge plug passes through adapter and sets
Tool is connected, since the setting tool of field operation selection is different, dissolvable bridge plug can by oil pipe, drilling rod, coiled tubing,
Within the tools tripping in oil gas casing such as cable, and using the setting tools such as hydraulic and cable set oil gas casing it
It is interior, after the completion of dissolvable bridge plug is connect by adapter with setting tool, according in conventional bridge plug tripping in mode tripping in pit shaft,
The first hollow cavity 111 that the push rod of setting tool passes through top connection 11 is connect with screw thread 113 of giving up, and makes the lower contact 12
Position is fixed；It covers the sleeve of setting tool in the top connection 11, and pushing cylinder is pushed to squeeze the top connection 11, on
Connector 11 push first slips 13 to the first cone sleeve side mobile, the second slips 14 to 16 side of the second cone sleeve
Mobile, the first slips 13 moves outward along the first inclined-plane of the first cone sleeve, the second slips 14 is along the second cone set
Second inclined-plane of cylinder moves inclined-plane outward, and the outside wall surface of first slips 13 and the second slips 14 is made to squeeze the interior of pit shaft
Wall, the first slips 13 and the support of the second slips 14 then proceed to squeeze top connection 11, top connection 11 pushes away on the inner wall of the pit shaft
Dynamic first slips 13 and the second slips 14 move together and squeeze the packing element 17,17 first slips 13 of packing element and the second card
Compressive deformation expansion between watts 14, and the inner wall of the pit shaft is squeezed, it completes to set, thus be blocked by dissolvable bridge plug
Pressure on the downside of pit shaft.
Embodiment two
As shown in Fig. 2, the present embodiment is substantially the same with the technical solution in embodiment one, the main distinction is this implementation
In example, there is no setting closeouts 123 in second hollow cavity 121, transfer in this way in solvable bridge plug 1 to predeterminated position
When, it after setting, giving up, needs to realize the closure of latus rectum in bridge plug by way of pitching, that is, passes through pitching device to taper
Pitching in counterbore 112, then carry out fracturing reform operation.The diameter of the ball is greater than the diameter of first hollow cavity 111, and small
In the diameter of 112 larger diameter end of cone shaped countersink, the first hollow cavity 111 can be thus stated by ball-off residence, realized
Pitching completion of giving up is set, and separates pit shaft by solvable bridge plug 1, the pressure on the downside of pit shaft is blocked by dissolvable bridge plug.
Embodiment three
As shown in figure 3, the technical solution of technical solution and embodiment one kind in the present embodiment is substantially the same, main region
It is not, lower contact 12 described in the present embodiment is tubular structure open at one end, and the other end is sealing, in the through-hole 114
Interior to be equipped with plug 19, the plug 19 can block the through-hole 124, and the space on the downside of the second hollow cavity 121 and pit shaft is not
Connection, directly can separate pit shaft by solvable bridge plug 1, not need pitching, structure is simpler.
In conclusion dissolvable bridge plug provided by the utility model, including the first slips, packing element and it is soluble on connect
Head, lower contact and the first cone sleeve can be matched with conventional setting tool, and dissolvable bridge plug by adapter and is sat
Envelope tool is connected, and dissolvable bridge plug transfers to designated position by tools such as cable, oil pipe, steel wires, then passes through setting tool
It is set, dissolvable bridge plug stops after a certain period of time in its former setting position, and dissolvable bridge plug connects with the liquid in oil/gas well
The raw dissolution of triggering or degradation reaction, are finally completely dissolved or degrade, and realize that oil/gas well casing inner diameter is unobstructed.With existing no killing well
The mode that device is sealed is compared, and the setting tool of dissolvable bridge plug routine provided by the present application can be realized as pit shaft
Sealing, does not need to use complicated no killing well device, operating cost, while the work that dissolvable bridge plug is set is greatly saved
Sequence is simple, flow chart is few, can save the activity duration, operating efficiency is improved, after dissolvable bridge plug is set, in casing
Wall anchoring is firm, bears the pressure from dissolvable bridge plug lower part during the packing of oil gas well shaft, can carry out pressure break work at this time
Industry, after pressing crack construction, without boring mill, dissolvable bridge plug voluntarily can be dissolved or be dropped in oil/gas well down-hole liquid environment
Solution, the full-bore of pit shaft can be realized without drilling and grinding operation, can be saved the activity duration, be saved operating expenses, solvable bridge plug
Using the design that top connection and lower contact are hollow in structure, it can effectively accelerate bridge plug dissolution time.
In the description of the present invention, it should be noted that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
State the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second "
It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains
Justice is two or more.
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
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 dissolvable bridge plug, the segmentation for oil/gas well is transformed, it is characterised in that: including the first slips, packing element and can
Top connection, lower contact and the first cone sleeve of dissolution, the top connection and the lower contact are tubular structure, it is described on connect
Internal the first hollow cavity for forming both ends open of head, the interior formation of the lower contact the second hollow cavity open at one end are described
One end of top connection is inserted into the second hollow cavity of the lower contact, and the outer wall of the top connection other end is equipped with limit
Portion, limiting section described in lateral edge to the direction of lower contact is successively arranged with the first slips, the first cone sleeve outside the top connection
And packing element；
First slips connects with the limiting section, and the packing element connects with the lower contact, and first slips is wedge shaped
Shape, the first cone sleeve are equipped with the first inclined-plane cooperated with first slips, and first inclined-plane is along the limiting section
It is tilted from inside to outside to the direction of the packing element.
2. dissolvable bridge plug according to claim 1, it is characterised in that: the dissolvable bridge plug further includes soluble pushes away
Ring, the throw-out collar are socketed in the outside wall surface of the top connection, and first slips passes through the throw-out collar and the limiting section phase
It connects.
3. dissolvable bridge plug according to claim 1, it is characterised in that: the dissolvable bridge plug further include the second slips and
Second cone sleeve, second slips and the second cone sleeve are successively socketed in by the packing element to the direction of the lower contact
In the outside wall surface of the top connection, the packing element is connected by second slips and the second cone sleeve with the lower contact,
The wedge shaped shape of second slips, the second cone sleeve is equipped with the second inclined-plane cooperated with second slips, described
Second inclined-plane is tilted along the direction ecto-entad of the packing element to the lower contact.
4. dissolvable bridge plug according to claim 3, it is characterised in that: first slips and the second slips include card
Watt seat and slips tooth, the slips tooth are arranged on the slip spider.
5. dissolvable bridge plug according to any one of claims 1 to 4, it is characterised in that: the lower contact is relative to described
The other end of open end is equipped with the through-hole being connected to second hollow cavity, and one end that the top connection is equipped with positive stop end is equipped with
The internal diameter of cone shaped countersink, the cone shaped countersink is gradually increased outward by one end close to the first hollow cavity, and the taper
The outside of counterbore is semi-circular shape structure.
6. dissolvable bridge plug according to claim 5, it is characterised in that: closeouts are equipped in second hollow cavity,
The closeouts can roll in second hollow cavity, to open or close the through-hole.
7. dissolvable bridge plug according to claim 6, it is characterised in that: the closeouts are that can dissolve ball, the circle
The diameter of ball is greater than the internal diameter of the through-hole.
8. dissolvable bridge plug according to claim 7, it is characterised in that: it is additionally provided with bar in second hollow cavity,
The bar is for stopping the ball to enter in the first hollow cavity.
9. dissolvable bridge plug according to claim 5, it is characterised in that: be equipped with plug, the plug energy in the through-hole
Enough block the through-hole.
10. dissolvable bridge plug according to claim 5, it is characterised in that: the packing element is made of rubber material, it is described on
Connector, lower contact and the cone sleeve by with mechanical strength soluble metal or degradable polymer be made.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/110204 WO2019090602A1 (en) | 2017-11-09 | 2017-11-09 | Dissolvable bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228337U true CN209228337U (en) | 2019-08-09 |
Family
ID=66438741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201790000496.XU Active CN209228337U (en) | 2017-11-09 | 2017-11-09 | A kind of dissolvable bridge plug |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209228337U (en) |
| WO (1) | WO2019090602A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847852A (en) * | 2019-10-22 | 2020-02-28 | 中国石油天然气股份有限公司 | Electrochemical method for accelerating dissolution of soluble bridge plug |
| CN113565482A (en) * | 2020-04-29 | 2021-10-29 | 中国石油化工股份有限公司 | Simulation device and method for simulating temporary plugging fracturing of horizontal well |
| CN114016931A (en) * | 2021-11-05 | 2022-02-08 | 中煤科工集团西安研究院有限公司 | Monitoring cable delay disengaging device, conveying assembly and timing recovery method |
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| CN111271022B (en) * | 2020-01-20 | 2022-02-25 | 黑龙江工业学院 | Coal mine gas extraction drill hole compressed air sealing method and sealing device |
| CN111878032A (en) * | 2020-08-20 | 2020-11-03 | 四川省威沃敦化工有限公司 | No packing element metal seal soluble bridging plug |
| CN114458237B (en) * | 2022-01-19 | 2022-09-06 | 大庆市天德忠石油科技有限公司 | Multifunctional soluble bridge plug |
| CN116677344A (en) * | 2022-06-17 | 2023-09-01 | 阜宁县宏达石化机械有限公司 | High-temperature-resistant soluble bridge plug |
| CN116752933B (en) * | 2023-08-22 | 2023-11-03 | 大庆市璞庆钻采设备制造有限公司 | Bridge plug capable of being fished for triggering deblocking |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8267177B1 (en) * | 2008-08-15 | 2012-09-18 | Exelis Inc. | Means for creating field configurable bridge, fracture or soluble insert plugs |
| CN205977174U (en) * | 2016-09-09 | 2017-02-22 | 大庆市永晨石油科技有限公司 | From soluble bridging plug device of taking fracturing ball |
| CN206220919U (en) * | 2016-09-23 | 2017-06-06 | 深圳市百勤石油技术有限公司 | A kind of solvable bridging plug |
| CN206158668U (en) * | 2016-11-08 | 2017-05-10 | 天津市通盈石油技术开发有限公司 | Soluble bridging plug |
| CN206513345U (en) * | 2017-02-10 | 2017-09-22 | 四川省威沃敦化工有限公司 | A kind of solvable bridging plug |
| CN107013181B (en) * | 2017-05-25 | 2023-09-19 | 克拉玛依启源石油科技有限公司 | Dissolvable bridge plug and bridge plug fracturing system |
-
2017
- 2017-11-09 WO PCT/CN2017/110204 patent/WO2019090602A1/en active Application Filing
- 2017-11-09 CN CN201790000496.XU patent/CN209228337U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847852A (en) * | 2019-10-22 | 2020-02-28 | 中国石油天然气股份有限公司 | Electrochemical method for accelerating dissolution of soluble bridge plug |
| CN113565482A (en) * | 2020-04-29 | 2021-10-29 | 中国石油化工股份有限公司 | Simulation device and method for simulating temporary plugging fracturing of horizontal well |
| CN114016931A (en) * | 2021-11-05 | 2022-02-08 | 中煤科工集团西安研究院有限公司 | Monitoring cable delay disengaging device, conveying assembly and timing recovery method |
| CN114016931B (en) * | 2021-11-05 | 2023-10-31 | 中煤科工集团西安研究院有限公司 | Monitoring cable time delay disengaging device, conveying assembly and timing recovery method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019090602A1 (en) | 2019-05-16 |
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Address after: 610000 No.704, floor 7, building 1, No.167, Jinlu Second Road, Wuhou New Town Management Committee, Wuhou District, Chengdu City, Sichuan Province Patentee after: VERTECHS OIL & GAS TECHNOLOGY Co.,Ltd. Address before: 610000 No. 1-1, No. 1, No. 1, No. four, Wuhou District people south road, Chengdu, Sichuan Province, No. 1-1 24 layer 1-3 Patentee before: VERTECHS OIL & GAS TECHNOLOGY Co.,Ltd. |