US1608709A - Method of and means for preventing corrosion of well tubing, casing, and working barrels - Google Patents
Method of and means for preventing corrosion of well tubing, casing, and working barrels Download PDFInfo
- Publication number
- US1608709A US1608709A US737010A US73701024A US1608709A US 1608709 A US1608709 A US 1608709A US 737010 A US737010 A US 737010A US 73701024 A US73701024 A US 73701024A US 1608709 A US1608709 A US 1608709A
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- United States
- Prior art keywords
- tubing
- casing
- sleeve
- zinc
- well
- 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.)
- Expired - Lifetime
Links
- 238000005260 corrosion Methods 0.000 title description 18
- 230000007797 corrosion Effects 0.000 title description 18
- 238000000034 method Methods 0.000 title description 9
- 229910052725 zinc Inorganic materials 0.000 description 42
- 239000011701 zinc Substances 0.000 description 42
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 40
- 239000002184 metal Substances 0.000 description 24
- 229910052751 metal Inorganic materials 0.000 description 24
- 125000006850 spacer group Chemical group 0.000 description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229920001342 Bakelite® Polymers 0.000 description 3
- 239000004637 bakelite Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- XGRYDJSRYGHYOO-UHFFFAOYSA-N Thesine Natural products C1=CC(O)=CC=C1C1C(C(=O)OCC2C3CCCN3CC2)C(C=2C=CC(O)=CC=2)C1C(=O)OCC1C2CCCN2CC1 XGRYDJSRYGHYOO-UHFFFAOYSA-N 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 102000001324 CD59 Antigens Human genes 0.000 description 1
- 108010055167 CD59 Antigens Proteins 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- SRVJKTDHMYAMHA-WUXMJOGZSA-N thioacetazone Chemical compound CC(=O)NC1=CC=C(\C=N\NC(N)=S)C=C1 SRVJKTDHMYAMHA-WUXMJOGZSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S138/00—Pipes and tubular conduits
- Y10S138/06—Corrosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S166/00—Wells
- Y10S166/902—Wells for inhibiting corrosion or coating
Definitions
- the invention relates to a method of and means for protecting welltubing, easing, ⁇
- the corrosion occurs on electro-positivel surfaces, that is to say, the surfaces from which an electric current leaves a metal and passes into an electrolyte like salt Water.
- the spacers may'also be held in place by friction, clamps, screws or any other suitable device.
- the spacers are made ofbakelite fiber or some like non-conducting material. They are circular disks perforated by holes to allow the passage of fluids' and having a hole in the center just large enough I for the snug passage 0f the tubing- Other first part of the invention Serial No. 737,010.
- shapes of ⁇ non-conducting spacers may be used inthe spirit and embodiment of this which consists esscntial'ly'of a non-conducting tubing spacer.
- tubing spacers may be used with or without the other parts of the device hereinafterdescribed.
- Eleczroposz'tzge metal sleeve Eleczroposz'tzge metal sleeve.
- the second part of this invention consists of a sleeve of metal suchas zinc I ⁇ that is electrolpositive to iron and therefore when proper y placed in the galvanie system in the well is positive to the iron andrenders the iron electro-negative.
- the zinc being the electropositive metal, is' corroded whereas the ironis protected at the expense of the'zinc.
- the zinc must be replaced from time to time, at intervals of from six months to a year, as it is consumed.
- Fig. l is a lView partly in sectiomand artly -in elevation showinor one form o -the protective sleeve appliedJ to well tubin the sleeve being equipped with insu ating spacers.
- Fig. v2 is a plan view of the constructidn shown in Fig. 1, spacer.
- Figs. 3 and 4 are details in elevation and looking down upon the veran, respectivelyf showing the'. Vtubing spacers.
- Fig. 5 is a detail view showmg a spring washer to be applied at the-top 0f the proa modified form te'ctive sleeve, and s ervin to maintain electrical contact between t 1e .sleeve and the tubing.
- v j -1 Fig. 6 is a view similar to FigJd showin of the electropositi've meta sleeve.
- v u is a detail view showmg a spring washer to be applied at the-top 0f the proa modified form te'ctive sleeve, and s ervin to maintain electrical contact between t 1e .sleeve and the tubing.
- v j -1 Fig. 6 is a view similar to FigJd showin of the electropositi've meta sleeve.
- v u is a detail view showmg a spring washer to be applied at the-top 0f the proa modified form te'c
- Fig.l 7 is a detail view showing a modified form of tie rod for sccuringtogethcr the but not from the calsing.
- Fig. 8 is an elevation showing another modification of the protective sleeve wherein the sleeve is spaced away from the tubing
- Fig. 9 represents a further modification ofthe zinc sleeve wherein aispace is provided between the sleeve and thetubing adapted to receiveniolten' metal or other material makingacast or welded connection between the zin'c and' the tubing.
- Fig. 10 is a diagrammatic view showing I the galvanic circuit which exists in a well employing the lectropositive metal sleeve in connection with the ⁇ :veil tubing. f
- Fig. 11 is a similar view 'showing-thev circuit where a special metallic contact brush Fig. ⁇ 12 is afdetail view showing one form of contact brush, and
- l Fi 13 is. a view similar to Fig. 12, but showing a different form of contact brush..
- sleeves of zinc are tted overl the tubing so as to bein contact with the rent passesl tubing but spaced away/from tlie casing so as to prevent direct 'contact therewith.
- electropositive metal signifies a metal from which an electric curthrough a-nelectrolyte to iron or some o er metal with which the electropositive metal forms a galvanic couple.
- 4I nsulating spacers at the ends of the' v.zi-nc sleeve and extending beyond the zinc sleeve are provided to protect the zinc against impact and abrasion and to prevent the zine from swinging against the-casing.
- tubing 10 indicates the tubing in a well (oil well or an ⁇ y other kind of well) which is normally subjected to the lcorrosive action of liquids and gasesf, -the usual tubing collar being indicated at 11.
- a sleeve 13 composed principally a of zinc or other metal which is electropositive with respect to iron, is fitted over the tubing and rests upon the spacer 14.
- the internal diameter ofythe sleeve 4 is .sutiicient to allow the tubing to pass through freely so'thatthesle'eve may be easily slipped on tothe tubing.
- the block of zinc-13 is preferably pro-l.
- bv 'tected at both ends bv means of circular spacers -14 of bakelite, fiber or other vlike iny lio sulating material which prevents the zinc from swinging against the casing,4 the diameters of the'v spacers being greater 'than the diameter of 'the 'zinc sleeve.
- the spacers -M' may vbe held iii-.place merely by gravity or inav be secured to the zinc sleeve in ⁇ any.
- a spring sleeve 16l is ment of t e invention resilient metal wires provided at the top of the zinc sleeve 13, 30 are inserted through holes 31 in# a-metal ections 17 extending a short dis- Y sleeve 32 surrounding the well tubing 10.l
- connection iI claim with oil wells it is desirable to .provide 1 metllOd Of4 Preventing, Corrosion of means to permittlie free passage of gas or Well tubing and casing which consists in prooth'er fluids between tubing and casing.
- Aevidingnon-conducting spacing rings between l i cordingly, the spacers 14 are provided with Said' tubing and casing, whereby said tubing a plurality' of holes fluids. i E against said casing.
- tubing and casing comprising a'plura'litybf shown in Fig. 8, According to this ar- V4non-conducting; spacing rings secured at 1nrangement, the zinc sleeve 13 is complet/ely ⁇ tervals upon said tubing to prevent the tubinsulated from they tubing by means 0f a ing from 'swinging against said casing, said 19 for the passage 0f is prevented from Swinging close to or' 2. 'Meansfor preventing corrosion of well.'
- the zinc sleeved may be of 08mg, a plurality: of non-conductmg spacgreater diameter than the spacer v14:, and is ing rings intcrosed between-said tubing and ring being provided with a.
- the outer casingla With this arrange-4v plurality of apertures t0 permit the passage ment, the insulation is located between the 0f lllld Vtubing and zinc/sleeve, rather than between 1 4l
- a method of protecting well tubing mi through the' casing casing against corrosion which consists in ing said tubing with a sleeve of metal which ing said tubi-ng with va sleeve of metal electro- 5.
- said insulating ⁇ sleeve being of less diameter thanthe'zinc sleeve, ⁇ and said zinc sleeve ⁇ fitting closely Awithint'he outer casing.
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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)
- Prevention Of Electric Corrosion (AREA)
Description
Nov. 30 1926. 1,608,709
PREVENTIM coRRosIoN 0F WELL TUBING, cAsING, AND WORKING BARRELS R. VAN A. MILLS METHOD OF AND MEANS FOR Filed Sept. 1C, 19244 2 Sheets-Sheet 2 V ll umu
ILE
INSULATION Cl//P Nov. 30,1926. 1,608,709
" VAN A. MILLS R. v METHOD qF AND MEANS FOR PREVENTING CORROSION 0F WELL TUBING,
1 cAsING, AND WORKING BARRELS.
Filed Sept. 1o, 1924 2 Sheets-Sheet 1 TUBING- PHCER r I H NSuLAfloru [i /6 IrusuLA-rao'nl ELEcTRoPolwvE MET- l m.. SLEEVE IruSuLA-rlom @Warmst Patented Nov. 30,'i192`6.
-UNITED sjrArEs PAIE-NI OFFICE.
n oNAL'D l.VAN AUxriN MILLS, or
SAN-DY srRING,-MABYLAND, AssIGNoB; To P E'rnn Q. NYCE, or WASHINGTON. DISTRICT or COLUMBIA.
METHOD o1-AND MEANS son PREVENTING o'oRRosIoN oF WELLTUBING, eAsING.,
' .AND wo'nxING BABRELS.
Application filed September 10, 1.524.v
The invention relates to a method of and means for protecting welltubing, easing,`
equipment in oil and gas wells 1s essentially,
anV electro-chemical process dependent upon galvanic. action where the metallic equipment. is .wet by water.
Galvanic action between tubing and casing is most serious where the tubing swings close to or against the casing.
The corrosion occurs on electro-positivel surfaces, that is to say, the surfaces from which an electric current leaves a metal and passes into an electrolyte like salt Water.
To stop this corrosion in oil and gas wells it is desirable to:
1L Space the tubing from the casing.
2. Render the equipmentelectro-negative.
3. Supply an electropositive material that will cori-ode in preference to the iron or other metal yin the equipment.
It is the purpose of this invention to accomplish thesel things.
The invention will be described under three headings, covering different phases of the invention. although all ythe features herein described cooperate to produce a unitary' result. namely the `prevention of corrosion.
The features which will now be discussed in detail' are (l) the insulating tubing spacers, (2) the electropositivemetal sleeve, and (3) the. metallic contact brush.
Tubing spacers.V
which it rests. The spacers may'also be held in place by friction, clamps, screws or any other suitable device. The spacers are made ofbakelite fiber or some like non-conducting material. They are circular disks perforated by holes to allow the passage of fluids' and having a hole in the center just large enough I for the snug passage 0f the tubing- Other first part of the invention Serial No. 737,010.
shapes of `non-conducting spacers may be used inthe spirit and embodiment of this which consists esscntial'ly'of a non-conducting tubing spacer.
T he "tubing spacers may be used with or without the other parts of the device hereinafterdescribed.
Eleczroposz'tzge metal sleeve.
Since corrosion occurs on 'an electro-positive surface, the second part of this invention consists of a sleeve of metal suchas zinc I`that is electrolpositive to iron and therefore when proper y placed in the galvanie system in the well is positive to the iron andrenders the iron electro-negative. The zinc, being the electropositive metal, is' corroded whereas the ironis protected at the expense of the'zinc. The zinc must be replaced from time to time, at intervals of from six months to a year, as it is consumed.
.By placing the zinc on the tubing and using spacersto prevent the zinc and the tubing from coming in Contact with thecasing, except where desired as for instance above4 the water level inside the well, it is possible to make the tubing with its superimposed zinc the positive electrode in the galvanic s vstem of which the casing is the negative electrode. Moreover, the .zinc on the tubing being electropositive with respect to the tubing, protects the tubing as Well as the easing. s. Y
Contact between the tubing and casing is made above the water level either through the casing head or through actual contact'between tubing and casingl in the well where the tubing swings against the casing, or through a special devicev hereinafter described.
For the working of this method of protectcn it is imperativeto have the best possible electrical contact between zinc and tubing and the best possible-electrical condue tivity in the tubing and casing throughout the galvanic circuit. It is also. imperative to prevent short circuiting between-the zinc and the casing vand between the tubing and casing below the water level. for such short v"circuiting will consume zinc unnecessarily vvor cause corrosion or both. This is accomdrawings, in which y with a zinc sleeve constitutes the second part of this invention, a device for the protection of well tubingand casing against corrosion.
Metallic Contact brush.
Fig. l is a lView partly in sectiomand artly -in elevation showinor one form o -the protective sleeve appliedJ to well tubin the sleeve being equipped with insu ating spacers.
Fig. v2 is a plan view of the constructidn shown in Fig. 1, spacer. Figs. 3 and 4 are details in elevation and looking down upon the jplan, respectivelyf showing the'. Vtubing spacers.
Fig. 5 is a detail view showmg a spring washer to be applied at the-top 0f the proa modified form te'ctive sleeve, and s ervin to maintain electrical contact between t 1e .sleeve and the tubing.v j -1 Fig. 6 is a view similar to FigJd showin of the electropositi've meta sleeve. v u
. Fig.l 7 is a detail view showing a modified form of tie rod for sccuringtogethcr the but not from the calsing.
protective sleeve andispacing elements.
Fig. 8 is an elevation showing another modification of the protective sleeve wherein the sleeve is spaced away from the tubing,
Fig. 9 .represents a further modification ofthe zinc sleeve wherein aispace is provided between the sleeve and thetubing adapted to receiveniolten' metal or other material makingacast or welded connection between the zin'c and' the tubing.
Fig. 10 is a diagrammatic view showing I the galvanic circuit which exists in a well employing the lectropositive metal sleeve in connection with the `:veil tubing. f
Fig. 11 isa similar view 'showing-thev circuit where a special metallic contact brush Fig.` 12 is afdetail view showing one form of contact brush, and
According to the presentinvention, sleeves of zinc (ox" other "metal which* is .electropositive with respectto iron), are tted overl the tubing so as to bein contact with the rent passesl tubing but spaced away/from tlie casing so as to prevent direct 'contact therewith. The
term electropositive metal as herein used signifies a metal from which an electric curthrough a-nelectrolyte to iron or some o er metal with which the electropositive metal forms a galvanic couple. 4I nsulating spacers at the ends of the' v.zi-nc sleeve and extending beyond the zinc sleeve are provided to protect the zinc against impact and abrasion and to prevent the zine from swinging against the-casing.
t 'By' spacing the zinc awaylfrom the-casing, short circuiting between the -zinc and the casing, and theconsequently excessive consumption ot" the'zinc are prevented.
'llezinc'sleeve being eleetropositive with i respect to both' the tubing to 'which .it -is 'attached and the casingwith which it 1s 1n I closeproxilnity, serves to prevent corrosion of both the tubing andthe casing', the zine` itself fbei'ngnttacked by the Acorrosion preference to the iron or steel.
reversed, so that the zinc sleeve though at- The 'arrangement described ,above may bel tached to the tubing is in contact with the t casing but not with the tubing. f It will be `further; understood that aiiy desired number of the'protecting sleeves may be employed without departing fron the' spiritv ofthe present invention.
-Beferringparticularly to Figs. 1 and 2,
' In order to prevent corrosion of the tubing is indicatedfby the "-'nu-v and casing, a sleeve 13 composed principally a of zinc or other metal which is electropositive with respect to iron, is fitted over the tubing and rests upon the spacer 14. The internal diameter ofythe sleeve 4is .sutiicient to allow the tubing to pass through freely so'thatthesle'eve may be easily slipped on tothe tubing.
'The block of zinc-13 is preferably pro-l.
'tected at both ends bv means of circular spacers -14 of bakelite, fiber or other vlike iny lio sulating material which prevents the zinc from swinging against the casing,4 the diameters of the'v spacers being greater 'than the diameter of 'the 'zinc sleeve. The spacers -M'may vbe held iii-.place merely by gravity or inav be secured to the zinc sleeve in `any.
suitable mannenA as'b'y meansofl tie'bolts Thebottom spacer rests` by gravity on i top of the tubing colla-r, the zinc resting on top of the spacer.v
Inmany instances it may befoiind desirable to provide shoulders 20 upon the tie rods 15 in order to hold, the spacers 14 ml 130 spaced relation even after tho-zinc sleeves .einploved without departing from the spirit 'of the invention.
\ preferably of such size as to fit loosely withthe Casing? Sai 'embodiments of the invention.
` electrolyte 23 (saline water or other corro thercfro L f 7. The method 'of protectin well tubing f the tubing 10.
1,608,709 i l3j 1 3 have disintegrated due to corrosive ac- One form of contact brush is 'shown in detion. This arrangement is shown in Fig. 7. tail in Fi 12. ,According tofthis embodi- Preferably, also, a spring sleeve 16l is ment of t e invention resilient metal wires provided at the top of the zinc sleeve 13, 30 are inserted through holes 31 in# a-metal ections 17 extending a short dis- Y sleeve 32 surrounding the well tubing 10.l
having pro] tance into the space between the zin'c and These wires are bent to U-sliape and make a the tubing, \vlieieby :i good velectrical congood electrical Contact 'between the tubing tact is secured and looseness of the zinc 10 und casing 12.
sleeve is prevented. 1 A simpler forni of Contact brush 'is shown lVhilc the invention has been described in Fig. 13 in which wires 33 are merely in detail, for the purpose of illustration, it twisted labout the tubing 10, and if desired,
is obvious that many modifications may be may be spot welded ythereto as at 34, or fastened together to make a wire sleeve fitting around the tubing.y Y
F01 iexamplg, in Fig. 6, is shown un :ir- The invention has been described in great rangement consisting merely of a plurality detailfor- -the purpose of illustratioinbut it of zinc castings 18 surrounding the tubingl ViS evident that it. S 'Subject t0 many modi- 10, spacing ineinbers 14 being provided belCiltOnS Within the SCOpe 0f the appended tween the zinccastings as shown. claims.
Where the devi-ce isused in connection iI claim with oil wells. it is desirable to .provide 1 metllOd Of4 Preventing, Corrosion of means to permittlie free passage of gas or Well tubing and casing which consists in prooth'er fluids between tubing and casing. Aevidingnon-conducting spacing rings between l i cordingly, the spacers 14 are provided with Said' tubing and casing, whereby said tubing a plurality' of holes fluids. i E against said casing.
Another modification of the devicewhioh falls within the scope of the-invention is tubing and casing comprising a'plura'litybf shown in Fig. 8, According to this ar- V4non-conducting; spacing rings secured at 1nrangement, the zinc sleeve 13 is complet/ely `tervals upon said tubing to prevent the tubinsulated from they tubing by means 0f a ing from 'swinging against said casing, said 19 for the passage 0f is prevented from Swinging close to or' 2. 'Meansfor preventing corrosion of well.'
Rel'erring now to the diagrammatic repretherefrom. sentation `oft tthe galvanic circuitV shown in 6. The' method of protecting tubing or casin Fig. 10, it will be seen that theicurrent ing composed of ferrous'mateial which conllows in the direction of the arrows from siste in providing'a zinc sleeve in close prointhe electopositive metal' 13 through the imity to 'said tubing `or casing but spaced sive liquid) to the casing 12. The circuit is completed through the 4casing head 24 iiid against corrosion which consis 1n provid If desired, metallic contact brushes 25 as is electrofpositive with respect to the tubing shown in Fig. 11, may be used to complete and providing a nonconducting rspacer' bethe g'alvanic circuit above the water evel low said metal sleeve. .c v so as `to avoid the unnecessary long Circuit s. A method of protecting weil tubing mi through the' casing casing against corrosion which consists in ing said tubing with a sleeve of metal which ing said tubi-ng with va sleeve of metal electro- 5. The "methodof protecting-well tubing imity to said tubing or casing, but spaced.-
' interposing between said tubing .and casing kagainst corrosion which consists 1n supplya pluralit of sleeves composed of metal .whlch is eiectro-positive with respect t0 the tubing and casing, preventing short circuitmgbetween said tublng and casmg at said electro-positive Ysleeves by the use 0f suitable combination, a plurality of zinc s eeves sur-l rounding thc vtubing and .in contact there# l` i with located below the level v of the liquid in the Well, non-conducting spacing Arings of greater diameter than the'zinc foripreve'nting' contact between said sleeve and said casing, and contact devices above the vlevel ofthe liquid in the well l*for completing an eiectric circuit.v Il w,
11. The methodf yof protecting tubing ing a sleeve of metal which is electropositive to the tubing, in close proximity to the tubing. but spaced therefrom.y
`12. In combination with a Well tubing and casing, a plurality -ot zinc castings surrounding'sajd tubing at intervals, land bakelite, fiber or other spacing membersof greater diameter than the zinc castings interposed between the castings and designed to prevent said castings from swinging against said casing. v
`13. .In combination with a well-tubing and casing, a'zincsleeve surrounding theJ tubing jin close proximity thereto, but not in direct contact therewith, an insulating sleeve interp'osed between zinc and the tubing, a collar on said tubing, and an insulating spacer integral 4with said insulating sleeve, and
resting upon said. collar, said insulating `sleeve being of less diameter thanthe'zinc sleeve, `and said zinc sleeve `fitting closely Awithint'he outer casing.
In testimonywhereof I ag: my signa- ,y
ture.
YRONALD VAN AUKEN MILLS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US737010A US1608709A (en) | 1924-09-10 | 1924-09-10 | Method of and means for preventing corrosion of well tubing, casing, and working barrels |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US737010A US1608709A (en) | 1924-09-10 | 1924-09-10 | Method of and means for preventing corrosion of well tubing, casing, and working barrels |
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US1608709A true US1608709A (en) | 1926-11-30 |
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US737010A Expired - Lifetime US1608709A (en) | 1924-09-10 | 1924-09-10 | Method of and means for preventing corrosion of well tubing, casing, and working barrels |
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Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2652358A (en) * | 1950-06-13 | 1953-09-15 | Frank A Mcferran | Water heater fittings |
US2758080A (en) * | 1954-04-07 | 1956-08-07 | Dow Chemical Co | Spring loaded galvanic anode assembly |
US2829099A (en) * | 1954-12-29 | 1958-04-01 | Pure Oil Co | Mitigating corrosion in oil well casing |
US2846385A (en) * | 1954-10-11 | 1958-08-05 | Exxon Research Engineering Co | Prevention of corrosion in wells |
US2985241A (en) * | 1958-02-21 | 1961-05-23 | Charles W Hanslip | Well screen device |
US3125499A (en) * | 1964-03-17 | Richard b | ||
US3277966A (en) * | 1963-11-01 | 1966-10-11 | Warren F Ward | Guide with sacrificial inserts |
US3425925A (en) * | 1964-12-24 | 1969-02-04 | Aqua Vel | Electrolytic water conditioning unit and electrode assembly therefor |
US3448034A (en) * | 1966-08-24 | 1969-06-03 | Leonard F Craft | Fluid stabilizer |
US3477930A (en) * | 1965-12-02 | 1969-11-11 | Lucile Wells Crites | Method and system for preventing electrolytic corrosion of pipes |
US3486999A (en) * | 1967-11-02 | 1969-12-30 | Leonard F Craft | Apparatus for preventing scale formation in water systems |
US3891394A (en) * | 1974-04-10 | 1975-06-24 | Love Oil Company Inc | Crystal generator to inhibit scale formation and corrosion in fluid handling systems |
US4096051A (en) * | 1974-04-18 | 1978-06-20 | The Duriron Company, Inc. | Tubular anode for cathodic protection |
US4147607A (en) * | 1976-10-14 | 1979-04-03 | Thermal Engineering Company | Apparatus for stimulating removal of electrolytic energy from fluids |
US4157732A (en) * | 1977-10-25 | 1979-06-12 | Ppg Industries, Inc. | Method and apparatus for well completion |
US4211625A (en) * | 1978-09-11 | 1980-07-08 | Borg-Warner Corporation | Impressed current cathodic protection system for submersible downhole pumping assembly |
US4268371A (en) * | 1980-03-13 | 1981-05-19 | The Duriron Company, Inc. | Cable guide for a tubular anode |
US4342634A (en) * | 1979-12-26 | 1982-08-03 | Brunswick Corporation | Continuity spring for a hydraulic cylinder |
US4504375A (en) * | 1983-01-31 | 1985-03-12 | Hommema Van 1825 B.V. | Anode element for use in a cathodic protection system |
WO1988010325A1 (en) * | 1987-06-24 | 1988-12-29 | Tapio Toivanen | Electrode arrangement |
US5417820A (en) * | 1992-07-31 | 1995-05-23 | Fears; Clois D. | Method to prevent adherence of marine organisms on surfaces of submerged components |
WO1996029450A1 (en) * | 1995-03-20 | 1996-09-26 | Fears Clois D | A method to prevent adherence of marine organisms on surfaces of submerged components |
US5665221A (en) * | 1995-12-05 | 1997-09-09 | A Rx Technologies Inc. | Electrical apparatus for controlling liquid contaminants |
EP0869201A2 (en) * | 1997-04-01 | 1998-10-07 | Richard Keatch | Method for preventing metal deposition and an oil or gas well with electrically contacting means |
US6725925B2 (en) * | 2002-04-25 | 2004-04-27 | Saudi Arabian Oil Company | Downhole cathodic protection cable system |
US20050040112A1 (en) * | 2001-11-07 | 2005-02-24 | Melton Linda K. | Method and apparatus for reducing scale, corrosion, and paraffin buildup in hydrocarbon piping |
US20050178673A1 (en) * | 2004-02-18 | 2005-08-18 | Al-Mahrous Husain M. | Axial current meter for in-situ continuous monitoring of corrosion and cathodic protection current |
US20140179448A1 (en) * | 2012-12-26 | 2014-06-26 | Ge Oil & Gas Esp, Inc. | Flexible joint connection |
US9742233B2 (en) | 2011-12-21 | 2017-08-22 | Robert Bosch Gmbh | Reduction of electrolytic corrosion in a brushless direct-current motor |
-
1924
- 1924-09-10 US US737010A patent/US1608709A/en not_active Expired - Lifetime
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125499A (en) * | 1964-03-17 | Richard b | ||
US2652358A (en) * | 1950-06-13 | 1953-09-15 | Frank A Mcferran | Water heater fittings |
US2758080A (en) * | 1954-04-07 | 1956-08-07 | Dow Chemical Co | Spring loaded galvanic anode assembly |
US2846385A (en) * | 1954-10-11 | 1958-08-05 | Exxon Research Engineering Co | Prevention of corrosion in wells |
US2829099A (en) * | 1954-12-29 | 1958-04-01 | Pure Oil Co | Mitigating corrosion in oil well casing |
US2985241A (en) * | 1958-02-21 | 1961-05-23 | Charles W Hanslip | Well screen device |
US3277966A (en) * | 1963-11-01 | 1966-10-11 | Warren F Ward | Guide with sacrificial inserts |
US3425925A (en) * | 1964-12-24 | 1969-02-04 | Aqua Vel | Electrolytic water conditioning unit and electrode assembly therefor |
US3477930A (en) * | 1965-12-02 | 1969-11-11 | Lucile Wells Crites | Method and system for preventing electrolytic corrosion of pipes |
US3448034A (en) * | 1966-08-24 | 1969-06-03 | Leonard F Craft | Fluid stabilizer |
US3486999A (en) * | 1967-11-02 | 1969-12-30 | Leonard F Craft | Apparatus for preventing scale formation in water systems |
US3891394A (en) * | 1974-04-10 | 1975-06-24 | Love Oil Company Inc | Crystal generator to inhibit scale formation and corrosion in fluid handling systems |
US4096051A (en) * | 1974-04-18 | 1978-06-20 | The Duriron Company, Inc. | Tubular anode for cathodic protection |
US4147607A (en) * | 1976-10-14 | 1979-04-03 | Thermal Engineering Company | Apparatus for stimulating removal of electrolytic energy from fluids |
US4157732A (en) * | 1977-10-25 | 1979-06-12 | Ppg Industries, Inc. | Method and apparatus for well completion |
US4211625A (en) * | 1978-09-11 | 1980-07-08 | Borg-Warner Corporation | Impressed current cathodic protection system for submersible downhole pumping assembly |
US4342634A (en) * | 1979-12-26 | 1982-08-03 | Brunswick Corporation | Continuity spring for a hydraulic cylinder |
US4268371A (en) * | 1980-03-13 | 1981-05-19 | The Duriron Company, Inc. | Cable guide for a tubular anode |
US4504375A (en) * | 1983-01-31 | 1985-03-12 | Hommema Van 1825 B.V. | Anode element for use in a cathodic protection system |
WO1988010325A1 (en) * | 1987-06-24 | 1988-12-29 | Tapio Toivanen | Electrode arrangement |
US5068023A (en) * | 1987-06-24 | 1991-11-26 | Tapio Toivanen | Electrode arrangement |
US5417820A (en) * | 1992-07-31 | 1995-05-23 | Fears; Clois D. | Method to prevent adherence of marine organisms on surfaces of submerged components |
WO1996029450A1 (en) * | 1995-03-20 | 1996-09-26 | Fears Clois D | A method to prevent adherence of marine organisms on surfaces of submerged components |
US5665221A (en) * | 1995-12-05 | 1997-09-09 | A Rx Technologies Inc. | Electrical apparatus for controlling liquid contaminants |
EP0869201A2 (en) * | 1997-04-01 | 1998-10-07 | Richard Keatch | Method for preventing metal deposition and an oil or gas well with electrically contacting means |
EP0869201A3 (en) * | 1997-04-01 | 2001-11-28 | Richard Keatch | Method for preventing metal deposition and an oil or gas well with electrically contacting means |
US6989095B2 (en) | 2001-11-07 | 2006-01-24 | Corrosion Inhibitor Systems, Llc | Fluid conditioner for reducing scale, corrosion and paraffin buildup in hydrocarbon piping |
US20050040112A1 (en) * | 2001-11-07 | 2005-02-24 | Melton Linda K. | Method and apparatus for reducing scale, corrosion, and paraffin buildup in hydrocarbon piping |
US6725925B2 (en) * | 2002-04-25 | 2004-04-27 | Saudi Arabian Oil Company | Downhole cathodic protection cable system |
US20050178673A1 (en) * | 2004-02-18 | 2005-08-18 | Al-Mahrous Husain M. | Axial current meter for in-situ continuous monitoring of corrosion and cathodic protection current |
US7189319B2 (en) | 2004-02-18 | 2007-03-13 | Saudi Arabian Oil Company | Axial current meter for in-situ continuous monitoring of corrosion and cathodic protection current |
US9742233B2 (en) | 2011-12-21 | 2017-08-22 | Robert Bosch Gmbh | Reduction of electrolytic corrosion in a brushless direct-current motor |
CN104011990B (en) * | 2011-12-21 | 2018-02-16 | 罗伯特·博世有限公司 | The reduction of electrolytic etching in brushless direct current motor |
US20140179448A1 (en) * | 2012-12-26 | 2014-06-26 | Ge Oil & Gas Esp, Inc. | Flexible joint connection |
US9260924B2 (en) * | 2012-12-26 | 2016-02-16 | Ge Oil & Gas Esp, Inc. | Flexible joint connection |
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