US2820522A - Paraffin tool or knife - Google Patents

Paraffin tool or knife Download PDF

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Publication number
US2820522A
US2820522A US490589A US49058955A US2820522A US 2820522 A US2820522 A US 2820522A US 490589 A US490589 A US 490589A US 49058955 A US49058955 A US 49058955A US 2820522 A US2820522 A US 2820522A
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United States
Prior art keywords
tool
knife
paraffin
blades
stud
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Expired - Lifetime
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US490589A
Inventor
Lloyd E Ray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DON E MARTIN
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DON E MARTIN
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Publication date
Application filed by DON E MARTIN filed Critical DON E MARTIN
Priority to US490589A priority Critical patent/US2820522A/en
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Publication of US2820522A publication Critical patent/US2820522A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/02—Scrapers specially adapted therefor

Definitions

  • An object of the invention is to provide a paraflin tool or knife that will efliciently and efiectively clean the interior bore of well tubing.
  • Another object of the invention is to provide a parafiin tool or knife that is provided with a coupling end so that the tool or knife can be attached to a cable or drill rod so that the tool or knife can be lowered into the well tubing while the pressure is present in the well tubing.
  • paraflin tool will cause the parafiin and residue to be loosened so that the oil will carry the paraffin and residue to the top of the well tubing where it can be disposed of, usually to a burning pit.
  • Fig. 1 is a perspective view of a paraifin tool or knife embodying the invention
  • Fig. 2 is an elevational view of the tool of Fig. 1;
  • Fig. 3 is a longitudinal sectional view of the tool of Fig. 2;
  • the tool 10 comprises a stud 11 having a threaded end 12 whereby the tool 10 may be connected to a cable or drill rod for the operation of the tool as will be later described.
  • the stud 11 is provided with a circular flange 13 adjacent the termination of the threads and the flange is provided with a bevelled lower edge 14.
  • a second circular flange 15 having a bevelled lower edge 16 is provided on the stud 11 intermediate of the first flange 13 and the end of the stud opposite to the threaded end thereof.
  • a pair of opposed outwardly diverging projections 17 and 18, respectively, are provided on the unthreaded end of the stud 11 and the outermost ends of these projections are farther apart than the diameter of the stud 11.
  • a pair of spiral blades 19 and 20 Depending from the outer ends of the projections 17 and 18 in axial alinement with the stud 11 and with each other are a pair of spiral blades 19 and 20, respectively.
  • the blades 19 and 20 have a spiral twist of degrees from one end to the opposite end thereof.
  • the longitudinal edges 21 of both blades are sharpened and bevelled toward the inside thereof.
  • the lowermost knife 22 is at the lower end of the blades 19 and 20 and the remaining three knives are in vertical spaced relationship.
  • the knives 22 have arcuate shaped edges 23 that are also sharpened and bevelled toward the inside.
  • the transverse cross-sections of the blades 19 and 20 and the knives 22 are such that the tool is circular in formation along its length.
  • the tool by means of the threaded end 12 of the stud 11, may be connected to a cable or drill rod.
  • the tool can be lowered into the well tubing to cut paraffin and other residue from the internal bore of the well tubing.
  • the tool Since the diameter of well tubing varies, the tool will be made in various sizes so that just suflicient clearance is provided between the tool and the wall of the well tubing to permit the insertion of the tool into the well tubing. As the tool is lowered into the tubing, the sharpened edges of the blades 19 and 20 and knives 22 will cut or scrape the paraflin from the walls of the tubing.
  • a parafiin cleaning tool for well tubing comprising a coupling stud, a pair of spiral blades dependently connected to said stud, and a plurality of vertically spaced knives integrally interconnecting said blades, said blades having a spiral twist of 180 for their entire length, said tool being of circular cross section, and said blades and knives having the inner faces of their edge portions inwardly beveled.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Cleaning In General (AREA)

Description

Jan. 21, 1958 E. RAY
PARAFFIN TOOL OR KNIFE Filed Feb. 25, 1955 INVENTOR. LZOYD E. RAY
United States Patent PARAFFIN TOOL OR KNIFE Lloyd E. Ray, Post, Tex., assignor to Don E. Martin, Harlingen, Tex.
Application February 25, 1955, Serial No. 490,589
1 Claim. (Cl. 166-176) This invention relates to improvements in paraflin cleaning tools or knives that are adapted to clean paraffin and other residue from the tubing of oil wells.
An object of the invention is to provide a paraflin tool or knife that will efliciently and efiectively clean the interior bore of well tubing.
Another object of the invention is to provide a parafiin tool or knife that is provided with a coupling end so that the tool or knife can be attached to a cable or drill rod so that the tool or knife can be lowered into the well tubing while the pressure is present in the well tubing.
The formation of the paraflin tool will cause the parafiin and residue to be loosened so that the oil will carry the paraffin and residue to the top of the well tubing where it can be disposed of, usually to a burning pit.
With the above and other objects and advantages in view the invention consists of the novel details of construction, arrangement and combination of parts more fully hereinafter described, claimed and illustrated in the accompanying drawing in which:
Fig. 1 is a perspective view of a paraifin tool or knife embodying the invention;
Fig. 2 is an elevational view of the tool of Fig. 1;
Fig. 3 is a longitudinal sectional view of the tool of Fig. 2;
Referring more in detail to the drawing wherein like parts are designated by like reference numerals the reference numeral is used to designate a paraffin tool or knife embodying the invention.
The tool 10 comprises a stud 11 having a threaded end 12 whereby the tool 10 may be connected to a cable or drill rod for the operation of the tool as will be later described.
The stud 11 is provided with a circular flange 13 adjacent the termination of the threads and the flange is provided with a bevelled lower edge 14.
A second circular flange 15 having a bevelled lower edge 16 is provided on the stud 11 intermediate of the first flange 13 and the end of the stud opposite to the threaded end thereof.
A pair of opposed outwardly diverging projections 17 and 18, respectively, are provided on the unthreaded end of the stud 11 and the outermost ends of these projections are farther apart than the diameter of the stud 11.
Depending from the outer ends of the projections 17 and 18 in axial alinement with the stud 11 and with each other are a pair of spiral blades 19 and 20, respectively. The blades 19 and 20 have a spiral twist of degrees from one end to the opposite end thereof.
The longitudinal edges 21 of both blades are sharpened and bevelled toward the inside thereof.
Four vertically spaced knives 22 are integrally connected at their opposite ends to the edges 21 of the blades 19 and 20. Viewing Fig. 1, it will be seen that the knives 22 are so spaced that no two knives are in alinement with each other.
The lowermost knife 22 is at the lower end of the blades 19 and 20 and the remaining three knives are in vertical spaced relationship.
The knives 22 have arcuate shaped edges 23 that are also sharpened and bevelled toward the inside.
The transverse cross-sections of the blades 19 and 20 and the knives 22 are such that the tool is circular in formation along its length.
The tool, by means of the threaded end 12 of the stud 11, may be connected to a cable or drill rod. Thus the tool can be lowered into the well tubing to cut paraffin and other residue from the internal bore of the well tubing.
Since the diameter of well tubing varies, the tool will be made in various sizes so that just suflicient clearance is provided between the tool and the wall of the well tubing to permit the insertion of the tool into the well tubing. As the tool is lowered into the tubing, the sharpened edges of the blades 19 and 20 and knives 22 will cut or scrape the paraflin from the walls of the tubing.
There has thus been provided a paraflin cleaning tool that is efficient and effective in operation and it is believed that the construction and operation of the invention will be apparent to those skilled in the art.
It is also to be understood that changes in the minor details of construction, arrangement and combination of parts may be resorted to provided they fall within the spirit of the invention and the scope of the appended claim.
Having thus described the invention what is claimed as new and desired to be secured by Letters Patent is:
A parafiin cleaning tool for well tubing comprising a coupling stud, a pair of spiral blades dependently connected to said stud, and a plurality of vertically spaced knives integrally interconnecting said blades, said blades having a spiral twist of 180 for their entire length, said tool being of circular cross section, and said blades and knives having the inner faces of their edge portions inwardly beveled.
References Cited in the file of this patent UNITED STATES PATENTS 1,758,995 Armstrong et a1. May 20, 1930 1,847,985 Sawyer Mar. 1, 1932 2,312,600 Steps Mar. 2, 1943
US490589A 1955-02-25 1955-02-25 Paraffin tool or knife Expired - Lifetime US2820522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US490589A US2820522A (en) 1955-02-25 1955-02-25 Paraffin tool or knife

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US490589A US2820522A (en) 1955-02-25 1955-02-25 Paraffin tool or knife

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US2820522A true US2820522A (en) 1958-01-21

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US490589A Expired - Lifetime US2820522A (en) 1955-02-25 1955-02-25 Paraffin tool or knife

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1758995A (en) * 1928-05-18 1930-05-20 John C Armstrong Tubing cleaner and protector
US1847985A (en) * 1931-03-19 1932-03-01 Fred H Sawyer Sewer drag
US2312600A (en) * 1941-01-02 1943-03-02 Steps Robert Alexander Well mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1758995A (en) * 1928-05-18 1930-05-20 John C Armstrong Tubing cleaner and protector
US1847985A (en) * 1931-03-19 1932-03-01 Fred H Sawyer Sewer drag
US2312600A (en) * 1941-01-02 1943-03-02 Steps Robert Alexander Well mechanism

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