CN109577869A - Casing with casting cement function - Google Patents
Casing with casting cement function Download PDFInfo
- Publication number
- CN109577869A CN109577869A CN201811474909.5A CN201811474909A CN109577869A CN 109577869 A CN109577869 A CN 109577869A CN 201811474909 A CN201811474909 A CN 201811474909A CN 109577869 A CN109577869 A CN 109577869A
- Authority
- CN
- China
- Prior art keywords
- tube body
- pipe sleeve
- casing
- chute
- casting cement
- 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
Links
- 239000004568 cement Substances 0.000 title claims abstract description 37
- 238000005266 casting Methods 0.000 title claims abstract description 16
- 238000002627 tracheal intubation Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of casings with casting cement function, including tube body and pipe sleeve, pipe sleeve is connected in tube body one end, pipe sleeve and tube wall offer several chutes, and for chute in interval annular distribution, chute length direction is identical as tube length direction, runner section is semicircle shape, runner section radius is 8mm, and the present invention, which has, can make cement be easier to flow into the gap between casing and wellbore, and the advantages of the fixing-stable of guarantee casing.
Description
Technical field
The present invention relates to oil-well drilling equipment fields, specifically, being related to a kind of casing with casting cement function.
Background technique
Petroleum casing pipe is the steel pipe for being used to support oil, gas well hole wall, to guarantee that drilling process carries out and oil entire after complete well
The normal operation of well；Every mouth well will use several layers of casings according to different drilling depth and geological condition, and casing is wanted after going into the well
Using well cementing of cement, it is different from oil pipe, drilling rod, it is not possible to reuse, belong to disposable consumable material.
Conventional casing since bore hole inside wall surface is irregular, then always has when being inserted into wellbore between wellbore and casing
The part of interference fit, and it is not easy to flow downward in casting cement, when cement moves to herein, it influences to consolidate lower layer's casing
It is fixed.
Summary of the invention
In place of solving above-mentioned the deficiencies in the prior art, the purpose of the present invention is to provide one kind to have casting cement function
The casing of energy, to overcome defect in the prior art.
To achieve the goals above, the present invention provides a kind of casings with casting cement function, including tube body and pipe
Set, pipe sleeve are connected in tube body one end, and pipe sleeve and tube wall offer several chutes, and chute is in interval annular distribution, chute
Length direction is identical as tube length direction, and runner section is semicircle shape, and runner section radius is 8mm.
By using above-mentioned technical proposal, chute is set in casting cement, cement can be made to be flowed into wellbore from chute,
Even if casing outer end face is interfered with the borehole wall, cement can also continue to flow to wellbore depths under the guiding of chute, guarantee position
Casing in wellbore depths can also be poured into cement, and when theing cement solidifies, because cement flow into chute in, then increase cement with
Contact area between casing keeps cement more stable to the fixation of casing.
As to further explanation of the invention, it is preferable that offer several seepage tanks on tube body, seepage tank is ring-type
And it is spaced apart along tube body axis direction.
By using above-mentioned technical proposal, seepage tank, which is arranged, can further increase the contact area of casing and cement, make to cover
It manages in more firm insertion wellbore.
As to further explanation of the invention, it is preferable that tube body is fixed with intubation, cannula outer diameter etc. far from pipe sleeve one end
In clear internal diameter.
By using above-mentioned technical proposal, setting, which is intubated, be can be inserted into pipe sleeve, realize the connection between casing, and effectively keep away
Exempt to misplace between casing, guarantees that axis is overlapped between casing.
As to further explanation of the invention, it is preferable that offer bearing surface in pipe sleeve, offered on bearing surface slotting
Slot is intubated and is fixed with slotting ring far from tube body one end, and slotting ring outer diameter and inner diameter is identical as slot outer diameter and inner diameter.
By using above-mentioned technical proposal, slot and slotting ring are set, in connecting sleeve, are inserted into slot using slotting ring,
Increase the contact area between casing, improves bonding strength, while can avoid Oil spills.
As to further explanation of the invention, it is preferable that tube body and pipe sleeve use H40 grade of steel.
By using above-mentioned technical proposal, keep cannula structure intensity high, long service life.
As to further explanation of the invention, it is preferable that tube body is 12.56mm with pipe sleeve wall thickness.
By using above-mentioned technical proposal, not only guarantee that casing has excellent structural strength, moreover it is possible to subtract to the full extent
Light casing wt reduces production cost.
The invention has the following advantages:
1, the casing of the invention by being provided with chute, can make cement smoothly flow to each position of casing, and increase water
The contact area of mud and casing improves the fixed efficiency of casing；
2, cement is further increased to the fixed function of casing by the way that seepage tank is arranged；
3, the bonding strength between casing is improved by setting slot and slotting ring, and can prevents petroleum from leaking.
Detailed description of the invention
Fig. 1 is top view of the invention；
Fig. 2 is bottom view of the invention.
Description of symbols:
1, tube body；11, chute；12, seepage tank；2, pipe sleeve；3, bearing surface；31, slot；4, it is intubated；41, slotting ring.
Specific embodiment
It is attached now in conjunction with appended preferred embodiment in order to further appreciate that structure of the invention, feature and other purposes
With attached drawing, detailed description are as follows, this attached drawing embodiment described is only used to illustrate the technical scheme of the present invention, and non-limiting
Invention.
A kind of casing with casting cement function, in conjunction with Fig. 1, Fig. 2, including tube body 1 and pipe sleeve 2, tube body 1 and pipe sleeve 2
It is cylinder steel pipe, 2 internal diameter of pipe sleeve is greater than 1 internal diameter of tube body, and tube body 1 and pipe sleeve 2 use H40 grade of steel, and keep cannula structure intensity high,
Long service life, tube body 1 and 2 wall thickness of pipe sleeve are 12.56mm, not only can guarantee that casing has excellent structural strength, moreover it is possible to most
Mitigate casing wt in big degree, reduces production cost；Pipe sleeve 2 is connected in 1 one end of tube body, and pipe sleeve 2 is offered with 1 outer wall of tube body
Several chutes 11, chute 11 is in interval annular distribution, and 11 length direction of chute is identical as 1 length direction of tube body, and chute 11 is cut
Face is semicircle shape, and 11 section radius of chute is 8mm.
In conjunction with Fig. 1, Fig. 2, chute 11 is set in casting cement, cement can be made to be flowed into wellbore from chute 11, even if
Casing outer end face is interfered with the borehole wall, and cement can also continue to flow to wellbore depths under the guiding of chute, guarantees to be located at well
The casing of eye depths can also be poured into cement, and when theing cement solidifies, and because cement flows into chute 11, then increase cement and set
Contact area between pipe keeps cement more stable to the fixation of casing.
In conjunction with Fig. 1, Fig. 2, several seepage tanks 12 are offered on tube body 1,12 section of seepage tank is also semicircle shape, seepage tank
12 are cyclic annular and are spaced apart along 1 axis direction of tube body that seepage tank 12 is communicated with chute 11, and setting seepage tank 12 can further increase
The contact area of big casing and cement, in the insertion wellbore for keeping casing more firm.
In conjunction with Fig. 1, Fig. 2, tube body 1 is fixed with intubation 4 far from 2 one end of pipe sleeve, and intubation 4 is circular tube shaped, and 4 outer diameters of intubation are equal to
2 internal diameter of pipe sleeve, 4 length of intubation are identical as 2 length of pipe sleeve, in setting 4 pluggable pipe sleeves 2 of intubation, realize the connection between casing,
And effectively avoid misplacing between casing, guarantee that axis is overlapped between casing；Bearing surface 3 is offered in pipe sleeve 2, is opened on bearing surface 3
Equipped with slot 31, slot 31 is endless groove, and intubation 4 is fixed with slotting ring 41 far from 1 one end of tube body, and slotting ring 41 is annular metal pipe,
41 outer diameter and inner diameter of slotting ring is identical as 31 outer diameter and inner diameter of slot, and slot 31 and slotting ring 41 is arranged, in connecting sleeve, using inserting
Ring 41 is inserted into slot 31, increases the contact area between casing, improves bonding strength, while can avoid Oil spills.
It is to be understood that foregoing invention content and specific embodiment are intended to prove technical solution provided by the present invention
Practical application should not be construed as limiting the scope of the present invention.Those skilled in the art are in spirit and principles of the present invention
It is interior, when can various modifications may be made, equivalent replacement or improvement.Protection scope of the present invention is subject to the appended claims.
Claims (6)
1. a kind of casing with casting cement function, which is characterized in that including tube body (1) and pipe sleeve (2), pipe sleeve (2) is connected
In tube body (1) one end, pipe sleeve (2) and tube body (1) outer wall offer several chutes (11), and chute (11) divides in interval is cyclic annular
Cloth, chute (11) length direction is identical as tube body (1) length direction, and chute (11) section is semicircle shape, chute (1) section radius
For 8mm.
2. the casing according to claim 1 with casting cement function, which is characterized in that tube body (1) if on offer
Dry seepage tank (12), seepage tank (12) are cyclic annular and are spaced apart along tube body (1) axis direction.
3. the casing according to claim 2 with casting cement function, which is characterized in that tube body (1) is far from pipe sleeve (2)
One end is fixed with intubation (4), and intubation (4) outer diameter is equal to pipe sleeve (2) internal diameter.
4. the casing according to claim 3 with casting cement function, which is characterized in that offer in pipe sleeve (2) to
Junction (3) offers slot (31) on bearing surface (3), and intubation (4) is fixed with slotting ring (41), slotting ring far from tube body (1) one end
(41) outer diameter and inner diameter is identical as slot (31) outer diameter and inner diameter.
5. the casing according to claim 4 with casting cement function, which is characterized in that tube body (1) is adopted with pipe sleeve (2)
With H40 grade of steel.
6. the casing according to claim 5 with casting cement function, which is characterized in that tube body (1) and pipe sleeve (2) wall
Thickness is 12.56mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474909.5A CN109577869A (en) | 2018-12-04 | 2018-12-04 | Casing with casting cement function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474909.5A CN109577869A (en) | 2018-12-04 | 2018-12-04 | Casing with casting cement function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109577869A true CN109577869A (en) | 2019-04-05 |
Family
ID=65927314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811474909.5A Pending CN109577869A (en) | 2018-12-04 | 2018-12-04 | Casing with casting cement function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109577869A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077621A (en) * | 2020-01-07 | 2020-04-28 | 中国石油天然气股份有限公司 | Protective device for externally coating optical cable at casing coupling and installation method thereof |
-
2018
- 2018-12-04 CN CN201811474909.5A patent/CN109577869A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077621A (en) * | 2020-01-07 | 2020-04-28 | 中国石油天然气股份有限公司 | Protective device for externally coating optical cable at casing coupling and installation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190405 |