CN105888606A - Fast drilling bridge plug made of composite material - Google Patents
Fast drilling bridge plug made of composite material Download PDFInfo
- Publication number
- CN105888606A CN105888606A CN201610284488.4A CN201610284488A CN105888606A CN 105888606 A CN105888606 A CN 105888606A CN 201610284488 A CN201610284488 A CN 201610284488A CN 105888606 A CN105888606 A CN 105888606A
- Authority
- CN
- China
- Prior art keywords
- slips
- axostylus axostyle
- slip
- plug
- slip spider
- 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.)
- Pending
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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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
- E21B33/134—Bridging plugs
Abstract
The invention discloses a fast drilling bridge plug made of a composite material, belonging to the technical field of oil and gas field exploitation. The fast drilling bridge plug comprises a shaft lever made of a epoxy glass fiber composite material, wherein an end shaft is arranged on the outer surface of the bottom end of the shaft lever; a plug is arranged at the axis of the top end of the shaft lever; the plug and the shaft lever are sealed by a sealing ring; a first slip bowl and a second slip bowl are fixed on the shaft lever; the sealing ring is mounted between the first slip bowl and the second slip bowl; transition tiles are arranged among the sealing ring and the first slip bowl as well as between the sealing ring and the second slip bowl; the first slip bowl is connected with one end of a first slip made of a metal material; the other end of the first slip is connected with a thrust ring; the second slip bowl is connected with one end of a second slip made of a metal material; and the other end of the second slip is connected with the end shaft. According to the bridge plug disclosed by the invention, the problems in the prior art that drill beating and jamming of a drilling tool easily occur during bridge plug drilling, the bridge plug chips cannot flow back easily and the construction efficiency is low are solved.
Description
Technical field
The invention belongs to exploitation of oil-gas field technical field, relate to a kind of composite speed and bore bridging plug.
Background technology
At present, Domestic Oil And Gas Fields is after large scale mining, and rich oil district is the most exhausted, leaves a large amount of hyposmosis
Oil district does not has large scale mining, main cause to be that oil production is low, unable to make ends meet.In recent years, hydraulic fracturing technology is used to enter
The exploitation of row shale gas and the secondary development in low-permeability oil district, the usage amount of bridging plug is greatly increased, because it belongs to easily-consumed products,
It is used only once, so consumption is huge.The bridging plug of the metal material of current domestic main use, has used more than half
In century, it is made that tremendous contribution for China oil production, but there is also many problems.
1. block, drill.When using fracturing technique to carry out oil-gas mining, bridging plug sets complete, and fracturing work section completes it
After, just bridging plug is bored, it is achieved pit shaft is unimpeded.Now to use the method drilled through, by bridging plug from top to bottom, progressively
It is drilled to fragment.Fitchering, the accident being even struck off occur in drilling operation often, directly result in stop work and production,
Drill bit is reprocessed and is changed and bothers the most very much.
2. the row's of returning difficulty.Bore fragmented bridging plug due in down-hole, it is necessary to cleared up away, but metal fragment density be big,
Drilling cuttings is not of uniform size, the row's of returning difficulty, needs big pressure and big quantity of fluid just can take effect, puts into bigger.
3. efficiency is low.Metal material bridging plug is relatively big due to the hardness of metal, and slips part is overall at 60HRC, general drill bit
Being difficult to be smashed, the time that therefore drills through is long, and average time was at about 15 hours.
The problem existed for metal bridging plug, have developed composite bridging plug.This bridging plug solves not only for property
The problem of the existence of metal bridging plug, and by improving so that it is advantage becomes apparent from.
Summary of the invention
It is an object of the invention to provide a kind of composite speed and bore bridging plug, solve easily to go out when prior art is bored broken bridging plug
Now beat, bit freezing, bridging plug fragment return row difficulty, the problem that efficiency of construction is low.
The technical solution adopted in the present invention is, a kind of composite speed bores bridging plug, it is characterised in that include using ring
The axostylus axostyle that oxygen glass fiber compound material prepares, is provided with end axle at axostylus axostyle bottom outer surface, in axostylus axostyle bottom, end face is provided with pin
Bar, installs plug at the axle center on axostylus axostyle top, plug is sealed by sealing ring with axostylus axostyle, the first slip spider and the second slips
Seat is fixed on axostylus axostyle, and sealing ring is arranged between the first slip spider and the second slip spider, sealing ring and the first slip spider,
Being equipped with transition watt between second slip spider, the first slip spider is connected with the first slips one end prepared with metal material, the
The one slips other end is connected with throw-out collar, and throw-out collar is fixed on axostylus axostyle；Second slip spider and the second card prepared with metal material
Watt one end connects, and the second slips other end is connected with holding axle.
Inventive feature also resides in, further, axostylus axostyle heatproof >=150 DEG C, pressure >=70Mpa.
Further, cure process is made on the first slips and the second slips surface, and hardness is 60HRC, the first slips and second
Slips to pipe inner surface card deeply within 1.2mm.
Further, a length of 622.5mm of axostylus axostyle, external diameter be 75mm, internal diameter be 25mm.
Further, the external diameter of end axle is 112mm.
Further, the size of sealing ring is 25 × 2.65mm.
Further, the first slip spider and the second slip spider are all fixed on axostylus axostyle by 4 holding screws.
The invention has the beneficial effects as follows, a kind of composite speed is bored bridging plug and is had the advantage that
1. selection is investigated.Selecting high strength glass fiber and epoxy resin is major ingredient, preferred resin formula, unique firming body
System, make heatproof >=150 DEG C of material own, pressure >=70Mpa, have all without metal, high intensity, high shear modulus,
The features such as easy processing.
2. the row's of returning performance is splendid.After composite speed brill bridging plug has drilled through, its chip floats on surface, the pole when the row of returning
For easily, including other impurity, down-hole foreign material content is low, not only will not pollute oil, and adopting in the later stage
Oil will not injure the instruments such as sucker rod, show splendid.The row of returning injects without big pressure and big quantity of fluid, and reduction effect is bright
Aobvious.
3. efficiency of construction increases substantially.The hardness number of epoxy glass fiber composite is relatively low, and bradawl pressure just can be easily
Brill falls.Within the time that drills through of whole bridging plug foreshortens to one hour, it is greatly improved production efficiency.Employing composite speed
Boring after bridging plug, bit freezing, the accident such as drill significantly reduce, and scene can carry out massive hydraulic fracture operation, whole work
Industry process sets at slips, the stage that drills through saves the plenty of time, makes the whole fracturing work time be greatly shortened, greatly
Improve production efficiency.
The present invention is suitable for huge discharge and injects, and bridging plug is made with perforation connection, and Operating Pressure, quick construction, well bore isolation is reliable；
Bridging plug easily bores can be arranged, and leaves full-bore pit shaft；Casing cementing completion, is affected relatively small by hole stability；Fracturing section
Number is unrestricted；Instrument risk is relatively small, and construction sand plug pit shaft is disposable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is A-A profile in Fig. 1.
Fig. 3 is B-B profile in Fig. 1.
In figure, 1. axostylus axostyle, 2. throw-out collar, 3. the first slips, 4. the first slip spider, 5. transition watt, 6. the second slip spider, 7.
Two slips, 8. end axle, 9. plug, 10. sealing ring, 11. holding screws, 12. sealing rings, 13. pin rods.
Detailed description of the invention
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
Composite speed bore bridging plug structure, as Figure 1-3, a length of 622.5mm of axostylus axostyle 1, external diameter be 75mm,
Internal diameter is 25mm, is provided with end axle 8 at axostylus axostyle 1 bottom outer surface, and the external diameter of end axle 8 is 112mm, near angled end-face
Place is provided with pin rod 13, installs plug 9 in the axle center on axostylus axostyle 1 top, and plug 9 is sealed by sealing ring 10 with axostylus axostyle 1,
The size of sealing ring 10 is 25 × 2.65mm；First slip spider 4 and the second slip spider 6 are respectively by 4 holding screws
11 are fixed on axostylus axostyle 1, and sealing ring 12 is arranged between the first slip spider 4 and the second slip spider 6, sealing ring 12 with
Being equipped with transition watt 5 between first slip spider the 4, second slip spider 6, the first slip spider 4 is connected with first slips 3 one end,
First slips 3 other end is connected with throw-out collar 2, and throw-out collar 2 is fixed on axostylus axostyle 1；Second slip spider 6 and the second slips 7
One end connects, and second slips 7 other end is connected with end axle 8.
Drilling through speed for promoting overall bridging plug and set safely, pin selects carbon fibre materials and metal material.First slips 3
And second slips 7 use cast iron materials, cure process is made on the first slips 3 and the second slips 7 surface, and hardness is 60HRC,
Within only 1.2mm deep to pipe inner surface card；Structurally it is also carried out optimizing, it is simple to bore chip miniaturization after mill.
Packing element is in addition to function own needs, and hardness number also increases, and purpose is also easy for boring chip miniaturization after mill,
It is prone to the row of returning.Pressure break ball requires that roundness is high, and good sealing effect uses metal solubility ball.
Axostylus axostyle 1 selects high strength glass fiber and epoxy resin to be major ingredient, preferred resin formula, unique curing system, makes
Heatproof >=150 DEG C of material own, pressure >=70Mpa, have all without metal, high intensity, high shear modulus, easily process
Etc. feature.
After composite speed brill bridging plug has drilled through, its chip floats on surface, extremely easy, including other when the row of returning
Impurity, down-hole foreign material content is low, not only will not pollute oil, and will not injure oil pumping in the oil recovery in later stage
The instruments such as bar, the row of returning injects without big pressure and big quantity of fluid, and reduction effect is obvious.
The hardness number of epoxy glass fiber composite is relatively low, and bradawl pressure just can be bored easily.When drilling through of whole bridging plug
Between foreshorten to one hour within, be greatly improved production efficiency.Use composite speed to bore after bridging plug, bit freezing, drill
Significantly reducing etc. accident, scene can carry out massive hydraulic fracture operation, and whole operation process sets at slips, drills through the stage
Save the substantial amounts of time, make the whole fracturing work time be greatly shortened, greatly improve production efficiency.
The operation principle of the present invention:
With coiled tubing or cable will give up, perforating gun (or abrasive perforating instrument), bridging plug tool string are delivered to horizontal well and are executed
Workshop section position, is then passed through setting bridging plug, perforation, sand fracturing, so repeats, it is possible to achieve the most to horizontal well
The storey increase design of section.After having constructed, lower continuous tubing drill opens all bridging plugs, open flow discharge opeing.
The present invention is suitable for cased hole completion, is not limited by storey increase design progression.
This speed turns the work process of bridging plug:
1. pit shaft prepares；2. first paragraph perforation；3. first paragraph pressure break；Enter down bridging plug, pipe string made by perforation connection；5. set
Bridging plug, precalculated position perforation；6. second segment pressure break；7. the same manner, completes the bridging plug packing of remaining section, perforation, pressure break.
8. use continuous tubing drill except bridging plug, discharge opeing, production.
This speed turns the work characteristics of bridging plug:
1. the cased hole completion such as be suitable for borehole size 3.5 ", 4 ", 4.5 ", 5 ", 5.5 "；
2. packer heatproof: 204.4 DEG C；
3. bear operting differential pressure: 70MPa.
4. slips high intensity, broken design when boring mill；
5. bradawl pressure can complete to bore plug operation, bores chip when opening few, is more easy to return out.
The present invention is with glass fibre and epoxy resin as major ingredient, and dibutyl phthalate, defoamer are the composite that adjuvant is produced,
Have all without features such as metal, high intensity, high shear modulus, easy processing.
Composite speed is bored bridging plug and is applied to land oil well, gas well, shale gas.
Claims (7)
1. a composite speed bores bridging plug, it is characterised in that include using epoxy glass fiber composite to prepare
Axostylus axostyle (1), is provided with end axle (8) at axostylus axostyle (1) bottom outer surface, in axostylus axostyle (1) bottom, end face is provided with pin rod (13),
Installing plug (9) at the axle center on axostylus axostyle (1) top, plug (9) is sealed by sealing ring (10) with axostylus axostyle (1),
First slip spider (4) and the second slip spider (6) are fixed on axostylus axostyle (1), and sealing ring (12) is arranged on the first slips
Between seat (4) and the second slip spider (6), sealing ring (12) and the first slip spider (4), the second slip spider (6)
Between be equipped with transition watt (5), the first slip spider (4) is connected with the first slips (3) one end prepared with metal material,
First slips (3) other end is connected with throw-out collar (2), and throw-out collar (2) is fixed on axostylus axostyle (1)；Second slip spider (6)
Being connected with the second slips (7) one end prepared with metal material, the second slips (7) other end is connected with end axle (8).
A kind of composite speed the most according to claim 1 bores bridging plug, it is characterised in that described axostylus axostyle (1) is resistance to
Temperature >=150 DEG C, pressure >=70Mpa.
A kind of composite speed the most according to claim 1 bores bridging plug, it is characterised in that described first slips (3)
Making cure process with the second slips (7) surface, hardness is 60HRC, and the first slips (3) and the second slips (7) are right
Pipe inner surface card is deeply within 1.2mm.
A kind of composite speed the most according to claim 1 bores bridging plug, it is characterised in that described axostylus axostyle (1)
A length of 622.5mm, external diameter be 75mm, internal diameter be 25mm.
A kind of composite speed the most according to claim 1 bores bridging plug, it is characterised in that described end axle (8)
External diameter be 112mm.
A kind of composite speed the most according to claim 1 bores bridging plug, it is characterised in that described sealing ring (10)
Size be 25 × 2.65mm.
A kind of composite speed the most according to claim 1 bores bridging plug, it is characterised in that described first slip spider
(4) and the second slip spider (6) is all fixed on axostylus axostyle (1) by 4 holding screws (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284488.4A CN105888606A (en) | 2016-04-29 | 2016-04-29 | Fast drilling bridge plug made of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284488.4A CN105888606A (en) | 2016-04-29 | 2016-04-29 | Fast drilling bridge plug made of composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105888606A true CN105888606A (en) | 2016-08-24 |
Family
ID=56702275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610284488.4A Pending CN105888606A (en) | 2016-04-29 | 2016-04-29 | Fast drilling bridge plug made of composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105888606A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412456A (en) * | 2018-05-15 | 2018-08-17 | 西安瑞兰特石油设备有限公司 | Full composite material speed bores bridge plug |
| CN109236229A (en) * | 2018-10-09 | 2019-01-18 | 成都维泰油气能源技术有限公司 | A kind of mixing bridge plug |
| CN110982228A (en) * | 2019-11-28 | 2020-04-10 | 北方斯伦贝谢油田技术（西安）有限公司 | Power source for oil field bridge plug seat sealing and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202181876U (en) * | 2011-08-23 | 2012-04-04 | 中国石油天然气股份有限公司 | Drilling type composite bridge plug |
| CN202596661U (en) * | 2012-04-13 | 2012-12-12 | 中国石油天然气股份有限公司 | High temperature and high pressure resistant quick drillable composite bridge plug |
| CN103046896A (en) * | 2013-01-17 | 2013-04-17 | 四机赛瓦石油钻采设备有限公司 | Fracturing bridge plug |
| CN204457595U (en) * | 2014-12-16 | 2015-07-08 | 中国石油天然气股份有限公司 | Oil-pipe bridge plug |
-
2016
- 2016-04-29 CN CN201610284488.4A patent/CN105888606A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202181876U (en) * | 2011-08-23 | 2012-04-04 | 中国石油天然气股份有限公司 | Drilling type composite bridge plug |
| CN202596661U (en) * | 2012-04-13 | 2012-12-12 | 中国石油天然气股份有限公司 | High temperature and high pressure resistant quick drillable composite bridge plug |
| CN103046896A (en) * | 2013-01-17 | 2013-04-17 | 四机赛瓦石油钻采设备有限公司 | Fracturing bridge plug |
| CN204457595U (en) * | 2014-12-16 | 2015-07-08 | 中国石油天然气股份有限公司 | Oil-pipe bridge plug |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412456A (en) * | 2018-05-15 | 2018-08-17 | 西安瑞兰特石油设备有限公司 | Full composite material speed bores bridge plug |
| CN109236229A (en) * | 2018-10-09 | 2019-01-18 | 成都维泰油气能源技术有限公司 | A kind of mixing bridge plug |
| CN110982228A (en) * | 2019-11-28 | 2020-04-10 | 北方斯伦贝谢油田技术（西安）有限公司 | Power source for oil field bridge plug seat sealing and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |
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| RJ01 | Rejection of invention patent application after publication |