CN104514516A - Automatic grouting float collar - Google Patents
Automatic grouting float collar Download PDFInfo
- Publication number
- CN104514516A CN104514516A CN201310456853.1A CN201310456853A CN104514516A CN 104514516 A CN104514516 A CN 104514516A CN 201310456853 A CN201310456853 A CN 201310456853A CN 104514516 A CN104514516 A CN 104514516A
- Authority
- CN
- China
- Prior art keywords
- float collar
- valve head
- collar body
- circular cone
- cone valve
- 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
- 239000003208 petroleum Substances 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 abstract description 7
- 239000004568 cement Substances 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract 4
- 238000011900 installation process Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 208000034656 Contusions Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002184 metal Substances 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
- E21B17/02—Couplings; 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to an automatic grouting float collar. The automatic grouting float collar comprises a float collar body, wherein the float collar body is connected with petroleum casing pipes through threads at the upper end and the lower end of the float collar body, a spring seat is fixedly arranged in the lower end of the float collar body, a flow choking plate is arranged in the upper end of the float collar body, a slide rod is inserted into a center hole of the spring seat, a conical valve head is arranged at the upper end of the slide rod, a spring is arranged between the conical valve head and the spring seat and sleeves the slide rod, an axial liquid flow hole is formed in the spring seat, a rubber release mat arranged at the upper end of the spring sleeves the slide rod, the rubber release mat is in a cross line shape, spheres are arranged at two ends of the rubber release mat, the spheres are arranged between the conical valve head and a conical bore of the flow choking plate, and a gap is formed between the conical valve head and the conical bore of the flow choking plate. The automatic grouting float collar is simple in structure, convenient to install, and safe and reliable in construction, enables slurry in a well to flow into the petroleum casing pipes through the gap between the conical valve head and the conical bore of the flow choking plate during the casing installation process, achieves automatic slurry grouting, enables two ends of the rubber release mat to fall off once a pump is opened for circulating the slurry, recovers seal between the conical valve head and the flow choking plate, can prevent a cement slurry backflow accident from occurring, and eliminates construction hidden danger.
Description
Technical field
The present invention relates to a kind of automatic grouting float collar, belong to oil gas well cementing operation technical field of tools.
Background technology
Float collar is the instrument in oil gas well cementing operation process middle sleeve bottom, and float collar, except in order to realize " bruising ", stop plug to continue outside descending effect, also having an effect to be exactly " back pressure valve ", namely stops cover extratubal fluid to enter in sleeve pipe.During old-fashioned float collar back pressure valve setting of casing, in order to make to be full of mud in sleeve pipe, need on rig floor from sleeve opening artificial, this not only increases workload, also affects setting of casing speed, if grouting time is long, not in time, also easily there is sleeve pipe and glue card accident in moving casing.In order to address this problem, colleagues design a lot of ways, develop the device of multiple automatic grouting, as perforated baffle (or web plate) formula, by-pass pipe, cut off homing position type etc., the object of these devices wants to reach in setting of casing process, to allow mud in well automatically enter in sleeve pipe with suitable speed, instantly allows float collar play the sealing function of " back pressure valve " after complete sleeve pipe again.But because these apparatus structures are complicated, technological requirement is high, manufacturing cost is high, the probability of success is low, have as by-pass pipe, cut off homing position type, device relies on " bruising " (when plug arrives float collar), and float collar just can be made to seal (namely recovering back pressure valve function).Being washed out by perforated baffle by differential pressure action when (as the perforated baffle formula) that have is turn on pump after lower complete sleeve pipe falls in lower parts casing pipe or shaft bottom, but these metal porous baffle plates fall into bottom can produce certain hidden danger.
Summary of the invention
For above-mentioned defect, the object of the present invention is to provide a kind of structure simple, low cost of manufacture, easy for installation, can not there is cement paste refluence accident in good airproof performance, eliminates construction hidden danger, safe and reliable a kind of automatic grouting float collar.
The technical solution adopted in the present invention is for this reason:
Comprise float collar body, the described upper and lower two ends of float collar body are provided with screw thread and are connected with petroleum casing pipe, float collar body lower end internal fixtion is provided with spring base, float collar body is provided with spoiler in upper end, the centre bore inner sleeve of spring base has slide bar, slide bar upper end is provided with circular cone valve head, spring housing is provided with on slide bar between circular cone valve head and spring base, conical bore is provided with and circular cone valve head matches in spoiler lower end, spring base is provided with axial flowbore, spring upper end is provided with rubber and takes off cushion cover on slide bar, the de-pad of described rubber is yi word pattern, rubber de-pad two ends are equipped with spheroid, spheroid is between circular cone valve head and the conical bore of spoiler, make to form gap between circular cone valve head and the conical bore of spoiler.
O RunddichtringO is provided with between described spoiler and float collar body radial direction.
Described circular cone valve head upper surface is provided with rubber layer.
Advantage of the present invention is:
Structure of the present invention is simple, and low cost of manufacture is easy for installation, after setting of casing enters well, be provided with spheroid form gap because rubber takes off pad two ends between circular cone valve head and the conical bore of spoiler, the mud in well enters in sleeve pipe with certain speed, thus realizes automatic grouting function; After setting of casing terminates, during turn on pump circulating mud, rubber de-pad two ends will split away off, and recover the sealing function between circular cone valve head and spoiler, cement paste refluence accident can not occur, and eliminate construction hidden danger, construction safety is reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the expanded view that in Fig. 1, rubber takes off pad.
In figure, 1 be float collar body, 2 are spring bases, 3 are spoilers, 4 are slide bars, 5 are circular cone valve heads, 6 are springs, 7 are axial flowbore, 8 are de-pads of rubber, 9 are O RunddichtringOs, 10 is rubber layers.
Detailed description of the invention
A kind of automatic grouting float collar, comprise float collar body 1, described float collar body about 1 two ends are provided with screw thread and are connected with petroleum casing pipe, float collar body 1 lower end internal fixtion is provided with spring base 2, float collar body 1 is provided with spoiler 3 in upper end, the centre bore inner sleeve of spring base 2 has slide bar 4, slide bar 4 upper end is provided with circular cone valve head 5, being provided with spring 6 between circular cone valve head 5 and spring base 2 is enclosed within slide bar 4, conical bore is provided with and circular cone valve head 5 matches in spoiler 3 lower end, spring base 2 is provided with axial flowbore 7, spring 6 upper end is provided with rubber and takes off pad 8 and be enclosed within slide bar 4, described rubber takes off pad 8 for yi word pattern, rubber takes off pad 8 two ends and is equipped with spheroid, spheroid is between circular cone valve head 5 and the conical bore of spoiler 3, make to form gap between the conical bore of circular cone valve head 5 and spoiler 3.
O RunddichtringO 9 is provided with between spoiler 3 of the present invention and float collar body 1 radial direction.
Circular cone valve head 5 upper surface of the present invention is provided with rubber layer 10.
After entering well, be provided with spheroid form gap because rubber takes off pad 8 two ends between circular cone valve head 5 and the conical bore of spoiler 3, the mud in well enters in sleeve pipe with certain speed, thus realizes automatic grouting function; After setting of casing terminates, during turn on pump circulating mud, rubber takes off pad 8 two ends and will split away off, and recovers the sealing function between circular cone valve head 5 and spoiler 3, cement paste refluence accident can not occur, and eliminate construction hidden danger, construction safety is reliable.
Claims (3)
1. an automatic grouting float collar, it is characterized in that, comprise float collar body, the described upper and lower two ends of float collar body are provided with screw thread and are connected with petroleum casing pipe, float collar body lower end internal fixtion is provided with spring base, float collar body is provided with spoiler in upper end, the centre bore inner sleeve of spring base has slide bar, slide bar upper end is provided with circular cone valve head, spring housing is provided with on slide bar between circular cone valve head and spring base, conical bore is provided with and circular cone valve head matches in spoiler lower end, spring base is provided with axial flowbore, spring upper end is provided with rubber and takes off cushion cover on slide bar, the de-pad of described rubber is yi word pattern, rubber de-pad two ends are equipped with spheroid, spheroid is between circular cone valve head and the conical bore of spoiler, make to form gap between circular cone valve head and the conical bore of spoiler.
2. a kind of automatic grouting float collar according to claim 1, is characterized in that, is provided with O RunddichtringO between described spoiler and float collar body radial direction.
3. a kind of automatic grouting float collar according to claim 1, is characterized in that, described circular cone valve head upper surface is provided with rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456853.1A CN104514516A (en) | 2013-09-30 | 2013-09-30 | Automatic grouting float collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456853.1A CN104514516A (en) | 2013-09-30 | 2013-09-30 | Automatic grouting float collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104514516A true CN104514516A (en) | 2015-04-15 |
Family
ID=52790343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310456853.1A Pending CN104514516A (en) | 2013-09-30 | 2013-09-30 | Automatic grouting float collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104514516A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555564A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Straight well displacement control homing position type is from grouting floating hoop |
| CN108316883A (en) * | 2017-01-16 | 2018-07-24 | 新疆如通石油技术服务有限公司 | Automatically pouring mud tool |
| CN110206498A (en) * | 2019-07-15 | 2019-09-06 | 辽宁昆成实业有限公司 | One kind reinforcing centering drillable metal casing shoes for bushing pipe |
| CN111779462A (en) * | 2020-08-02 | 2020-10-16 | 濮阳中原三力创高机械设备有限公司 | Floating hoop and rubber plug interlocking device and application method |
-
2013
- 2013-09-30 CN CN201310456853.1A patent/CN104514516A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555564A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Straight well displacement control homing position type is from grouting floating hoop |
| CN108316883A (en) * | 2017-01-16 | 2018-07-24 | 新疆如通石油技术服务有限公司 | Automatically pouring mud tool |
| CN110206498A (en) * | 2019-07-15 | 2019-09-06 | 辽宁昆成实业有限公司 | One kind reinforcing centering drillable metal casing shoes for bushing pipe |
| CN111779462A (en) * | 2020-08-02 | 2020-10-16 | 濮阳中原三力创高机械设备有限公司 | Floating hoop and rubber plug interlocking device and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150415 |