CN104612600A - Thread protecting cap for well casing - Google Patents
Thread protecting cap for well casing Download PDFInfo
- Publication number
- CN104612600A CN104612600A CN201510049031.0A CN201510049031A CN104612600A CN 104612600 A CN104612600 A CN 104612600A CN 201510049031 A CN201510049031 A CN 201510049031A CN 104612600 A CN104612600 A CN 104612600A
- Authority
- CN
- China
- Prior art keywords
- protecting cap
- cap body
- well casing
- thread protecting
- thread
- 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
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 10
- 230000001012 protector Effects 0.000 claims description 28
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 229920003023 plastic Polymers 0.000 abstract description 6
- 239000004033 plastic Substances 0.000 abstract description 6
- 238000005266 casting Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/005—Protection of pipes or objects of similar shape against external or internal damage or wear specially adapted for the ends of pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D59/00—Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
- B65D59/06—Caps
-
- 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
- E21B17/006—Accessories for drilling pipes, e.g. cleaners
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General 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)
- Closures For Containers (AREA)
Abstract
The invention relates to a thread protecting cap for a well casing. The thread protecting cap for the well casing comprises an inner thread protecting cap body, wherein the inner thread protecting cap body is integrally formed by casting aluminum alloy and is of a hollow inverted-trapezoidal barrel structure with a taper, a protruding edge with a certain thickness extends out from the upper end of the inner thread protecting cap body along the horizontal section of the inner thread protecting cap body, four cross grooves are evenly formed in the edge of the protruding edge in the circumferential direction, and outer threads which are matched with inner threads of the well casing are arranged along the outer wall of the inner thread protecting cap body. An outer thread protecting cap body is integrally formed by casting aluminum alloy and is of a hollow trapezoidal barrel structure with a taper, and inner threads which are matched with outer threads of the well casing are arranged along the inner wall of the outer thread protecting cap body. The thread protecting cap is low in weight and excellent in tenacity, the probability that threads of a casing body are affected due to collision when the well casing is transferred is greatly lowered, the manufacturing technique is simple, environmental friendliness is achieved, pollution is avoided, pungent odor generated by plastic products is avoided, the thread protecting cap can be recovered easily after being used and can be completely recycled, and good economical benefits and good social benefits are achieved for enterprises.
Description
Technical field
The invention belongs to oil equipment equipment field, be specifically related to a kind of well casing thread protecting cap for oil field.Background technology
Thread protecting cap is widely used in oil well operation field, is enclosed within well casing in order to protect screw thread position.Existing thread protecting cap is greatly to being be made up of all steel, plastic-steel, overall plastic three kinds of materials: 1, not only the weighing of all steel, and manufacture craft is more complicated, and recycles and be worth low, very easily gets rusty, is unfavorable for that product is put for a long time or travels far across the ocean.2, the steel of plastics-steel products will punching press in advance, then injection mo(u)lding, and operation is many, and during making, air pollution is severe, and steel during recovery, to mould separation more difficult, and recovery utilization rate is low, and intensity is also limited, slightly collides, and very easily causes steel to mould and comes unstuck.3, plastics, manufacturing procedure is few, usual single injection-molded, low price, cost of production is low, but plastics are cold, crisp for winter, easily damage, summer is hot, thread protecting cap is easily out of shape, recycling, and reheat can reduce the intensity of plastics, need to add new material, and its processing causes severe contamination to environment.
The well casing thread protecting cap of China more than 80% is all produced by plastics or plastic-steel material, produces the thread protecting cap of several ten million cover per year, is scattered in oil field after using, severe contamination is caused to field area, the wasting of resources is very serious, and according to measuring and calculating, only this resources loss is more than up to several hundred million unit.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of well casing thread protecting cap, and this well casing thread protecting cap manufacture craft is simple, and lightweight, intensity is high, and manufacturing process is pollution-free, and is convenient to recycling.
Technical scheme of the present invention: a kind of well casing thread protecting cap, comprise internal thread protector cap body, described internal thread protector cap body is by the hollow inverted trapezoidal barrel-like structure of the band tapering of aluminium alloys monoblock cast, its tapering is 1:16, its horizontal section of upper end edge of described internal thread protector cap body extends outward the convex edge that has thickness, the center at top, convex edge is provided with a groove, the edge of convex edge is provided with four cross recesses along its even circumferential, and described internal thread protector cap body is provided with along playing outer wall the external screw thread matched with well casing internal thread.Described groove is circular or square, and this well casing thread protecting cap is for the protection of the screw thread in well casing.
Another kind of technical scheme of the present invention: external thread protector cap body; described external thread protector cap body is by the hollow trapezoidal barrel-like structure of the band tapering of aluminium alloys monoblock cast; its tapering is 1:16; the upper end of described external thread protector cap body is the crown with thickness; the center of crown is provided with a groove; the edge of crown is provided with four cross recesses along its even circumferential; described external thread protector cap body is provided with the internal thread matched with well casing external screw thread along its inwall, this well casing thread protecting cap is for the protection of the screw thread outside well casing.
The present invention compared with prior art has following beneficial effect:
1, antirust, the oxide film formed due to aluminum alloy surface has rust inhibition, and work done in the manner of a certain author is applicable to the multiple weather conditions lower long period and deposits.
2, do not produce pollution, clean, environmental protection, does not produce pollution from manufacturing process or with rear recycling, thread protecting cap with after can conveniently reclaim, reach the object of refuse reclamation, resource utilization is close to a hundred per cent.
3, lightweight, weight is 1/3 of steel, and installation, easy accessibility, effectively reduce the labour intensity of workman, can reduce by the cost of transportation of 2/3 simultaneously.
4, cost performance is high, and user coordinates the waste and old product of the recovery cost also can returning about 8,000 yuan per ton on the basis of purchase price, effectively facilitates past heritage and reclaims, reduce entreprise cost.
5, simply, the thread protecting cap of manufacture is attractive in appearance beautiful for structure, manufacture craft, and can play the object of protection well casing screw thread well.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is another kind of structural representation of the present invention.
Fig. 5 is the upward view of Fig. 4.
Fig. 6 is the top view of Fig. 4.
In figure: 1-internal thread protector cap body, 2-external screw thread, 3-groove, 4-cross recess, 5-external thread protector cap body, 6-internal thread.
Detailed description of the invention
Embodiment 1
A kind of well casing thread protecting cap, comprise internal thread protector cap body 1, described internal thread protector cap body 1 is by the hollow inverted trapezoidal barrel-like structure of the band tapering of aluminium alloys monoblock cast, its tapering is 1:16, its horizontal section of upper end edge of described internal thread protector cap body 1 extends outward the convex edge that has thickness, the thickness of convex edge is 15mm, it is 80mm that the center at top, convex edge is provided with a diameter, the degree of depth is the circular groove 3 of 10mm, the edge of convex edge is provided with four cross recesses 4 along its even circumferential, well casing thread protecting cap is arranged on well casing for operator by spanner or is pulled down by cross recess 4.Described internal thread protector cap body 1 is provided with along playing outer wall the external screw thread 2 matched with well casing internal thread, during use, is screwed on the screw thread of well casing, for the protection of the screw thread in well casing by this well casing thread protecting cap.
Embodiment 2
A kind of well casing thread protecting cap, comprise external thread protector cap body 5, described external thread protector cap body 5 is by the hollow ladder type barrel-like structure of the band tapering of aluminium alloys monoblock cast, its tapering is 1:16, the upper end of described external thread protector cap body 5 is the crown with thickness, the centre bit of crown installs and is provided with a diameter is 60mm, the degree of depth is the square groove 3 of 10mm, the edge of crown is provided with four cross recesses 4 along its even circumferential, and well casing thread protecting cap is arranged on well casing for operator by spanner or is pulled down by cross recess 4.Described external thread protector cap body 5 is provided with the internal thread 6 matched with well casing external screw thread along its inwall, during use, be screwed on the screw thread of well casing, for the protection of the screw thread outside well casing by this well casing thread protecting cap.
The present invention can make different size well casing thread protecting cap according to the well casing of international standards, the horizontal plunger die casting machine of 200 ~ 300T is adopted during making, be equipped with aluminium melting furnace, aluminium alloys (adjusting chemical composition) is entered aluminum pot and is melted to about 630 degree, aluminium liquid is poured into die cavity with high temperature resistant spoon, start die casting machine, 3 seconds can by well casing thread protecting cap die cast, the rough casting of die cast is taken out after cooling, clear up the burr on it, cutting thread on the external thread protector cap or internal thread protector cap of die cast.
Also the aluminium scrap of recovery can be put into smelting furnace and carry out melting, after heat fused, adjust its composition, by above procedure operation.
Above-described embodiment only understands the present invention for those skilled in the art, is not limitation of the present invention, all do within aim of the present invention and principle any amendment, equivalent replace and improve, all should be included within protection scope of the present invention.
Claims (3)
1. a well casing thread protecting cap, comprise internal thread protector cap body, it is characterized in that described internal thread protector cap body is by the hollow inverted trapezoidal barrel-like structure of the band tapering of aluminium alloys monoblock cast, its tapering is 1:16, its horizontal section of upper end edge of described internal thread protector cap body extends outward the convex edge that has thickness, the center at top, convex edge is provided with a groove, the edge of convex edge is provided with four cross recesses along its even circumferential, and described internal thread protector cap body is provided with along playing outer wall the external screw thread matched with well casing internal thread.
2. well casing thread protecting cap according to claim 1, is characterized in that described groove is for circular or square.
3. a well casing thread protecting cap, comprise external thread protector cap body, it is characterized in that described external thread protector cap body is by the hollow trapezoidal barrel-like structure of the band tapering of aluminium alloys monoblock cast, its tapering is 1:16, the upper end of described external thread protector cap body is the crown with thickness, the center of crown is provided with a groove, and the edge of crown is provided with four cross recesses along its even circumferential, and described external thread protector cap body is provided with the internal thread matched with well casing external screw thread along its inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510049031.0A CN104612600A (en) | 2015-01-30 | 2015-01-30 | Thread protecting cap for well casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510049031.0A CN104612600A (en) | 2015-01-30 | 2015-01-30 | Thread protecting cap for well casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104612600A true CN104612600A (en) | 2015-05-13 |
Family
ID=53147225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510049031.0A Pending CN104612600A (en) | 2015-01-30 | 2015-01-30 | Thread protecting cap for well casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104612600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988687A (en) * | 2017-05-02 | 2017-07-28 | 中国神华能源股份有限公司 | A kind of oil pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2145910A1 (en) * | 1994-09-21 | 1996-03-22 | Thomas E. Sparks, Iii | Quick release thread protector |
| CN201206013Y (en) * | 2008-04-11 | 2009-03-11 | 邓翔威 | Petroleum pipeline protection axle sleeve |
| CN202745728U (en) * | 2012-07-06 | 2013-02-20 | 毛庆发 | Oil pipe and sleeve thread protector capable of preventing deforming, chapping and sticking at temperature of -46-66 DEG C, preventing breaking under tension of 5kg and preventing impact |
| CN104071445A (en) * | 2014-06-25 | 2014-10-01 | 杨海龙 | Thread protection cap and manufacturing method thereof |
| CN204113140U (en) * | 2014-09-24 | 2015-01-21 | 中国石油天然气股份有限公司 | Oil pipe thread protective device |
| CN204511329U (en) * | 2015-01-30 | 2015-07-29 | 杨海龙 | Well casing thread protecting cap |
-
2015
- 2015-01-30 CN CN201510049031.0A patent/CN104612600A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2145910A1 (en) * | 1994-09-21 | 1996-03-22 | Thomas E. Sparks, Iii | Quick release thread protector |
| CN201206013Y (en) * | 2008-04-11 | 2009-03-11 | 邓翔威 | Petroleum pipeline protection axle sleeve |
| CN202745728U (en) * | 2012-07-06 | 2013-02-20 | 毛庆发 | Oil pipe and sleeve thread protector capable of preventing deforming, chapping and sticking at temperature of -46-66 DEG C, preventing breaking under tension of 5kg and preventing impact |
| CN104071445A (en) * | 2014-06-25 | 2014-10-01 | 杨海龙 | Thread protection cap and manufacturing method thereof |
| CN204113140U (en) * | 2014-09-24 | 2015-01-21 | 中国石油天然气股份有限公司 | Oil pipe thread protective device |
| CN204511329U (en) * | 2015-01-30 | 2015-07-29 | 杨海龙 | Well casing thread protecting cap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988687A (en) * | 2017-05-02 | 2017-07-28 | 中国神华能源股份有限公司 | A kind of oil pipe |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150513 |