US20120034120A1 - Arrangement for hydrocarbon extraction in wells using progressive cavity pumps - Google Patents
Arrangement for hydrocarbon extraction in wells using progressive cavity pumps Download PDFInfo
- Publication number
- US20120034120A1 US20120034120A1 US13/050,111 US201113050111A US2012034120A1 US 20120034120 A1 US20120034120 A1 US 20120034120A1 US 201113050111 A US201113050111 A US 201113050111A US 2012034120 A1 US2012034120 A1 US 2012034120A1
- Authority
- US
- United States
- Prior art keywords
- tube
- rotating tube
- rotating
- progressive cavity
- friction
- 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.)
- Abandoned
Links
- 230000000750 progressive effect Effects 0.000 title claims abstract description 15
- 238000000605 extraction Methods 0.000 title claims abstract description 11
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 10
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 10
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 10
- 238000005260 corrosion Methods 0.000 claims abstract description 15
- 230000007797 corrosion Effects 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000002519 antifouling agent Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Definitions
- This invention refers to an arrangement for hydrocarbon extraction in wells using progressive cavity pumps, and more in particular it relates to an oil extraction tubing arrangement developed in order to reduce its wearing out as a result of friction and corrosion in field wells in which progressive cavity pumps or “PCP” are used.
- the purpose of this invention is to provide an arrangement for hydrocarbon extraction in wells using progressive cavity pumps, this arrangement was developed with the aim of reducing wearing out as a result of friction and corrosion in conventional tubings used in field wells in which the extraction of fluids is carried out by means of progressive cavity pumps.
- This arrangement consists of a rotating tube located inside a fixed tube placed along the well casing. The rotating tube carries the fluid from the bottom of the well to the surface. Between the rotating tube and the fixed tube there is an “O” ring-type space into which an anti-friction lubricant is injected between the external face of the rotating tube and the internal face of the fixed tube.
- the bottom end of the rotating tube has a section with holes which allow fluids to flow into it and it is connected to the progressive cavity pump by means of a rod, its top end is connected to a production outlet and to its propelling motor mechanism.
- the upper section of the fixed tube is connected to an anti-friction lubricant injection pipe in the space left between the rotating tube and the fixed tube.
- FIG. 1 outlines a typical example of a conventional arrangement for hydrocarbon extraction in wells using progressive cavity pumps.
- FIG. 2 outlines the arrangement for hydrocarbon extraction in wells using progressive cavity pumps, subject matter of this invention.
- FIGS. 3 to 6 respectively show the blown up details A, B, C and D of the arrangement shown in FIG. 2 .
- FIG. 1 corresponding to the prior art, and in the following figures in which this invention is illustrated the same or equivalent parts are indicated with the same reference numbers in both cases.
- FIG. 1 shows that the illustrated example of a conventional pumping arrangement consists of a casing 1 , with a wellhead outlet 2 , which holds inside a tubing 3 , which carries the fluid from the bottom of the well to the surface, formed by a succession of sections 4 connected among them by joints 5 .
- a longitudinally defined “O” ring-type space 13 Between the casing 1 and the tubing 3 there is a longitudinally defined “O” ring-type space 13 .
- the upper section 4 of the tubing 3 which projects itself from the wellhead at the field's land T surface has a production outlet 6 , through which the first of a succession of rods 8 connected among them by joints 9 passes as well as through a stuffing box 7 , the last rod 8 at the tubing's lower section 4 is connected to a bottom PCP pump 10 .
- the upper rod 8 In order to drive the rotating movement of the group of rods 8 , and consequently to drive the pump 10 , the upper rod 8 is connected to an electric engine 11 by means
- the pump 10 uses the oil which it pumps from the bottom of the well as a lubricant between the surfaces subject to friction, i.e. between the internal face of the tubing 3 and the external face of the rods 8 which rotate along its inside.
- a lubricant between the surfaces subject to friction, i.e. between the internal face of the tubing 3 and the external face of the rods 8 which rotate along its inside.
- FIG. 2 the way in which this invention solves the problem of the wearing out of the pumping rods due to friction and their resulting corrosion is shown.
- the herein proposed arrangement aims at solving such problems, consists of a rotating tube 14 located inside a fixed tube 15 , between which a space is left which serves as a lubricant oil container, as it can be seen in FIG. 3 , detailed under reference A in this FIG. 2 .
- the top end of the fixed tube 15 is connected to a pipe 22 which can be accessed from land T surface.
- tubing 14 has a 2 3/8 -inch section and tubing 15 has a 2 7/8 -inch section, which is enough to achieve the necessary lubrication in order to avoid the wearing out of tube 14 as a result of friction with tube 15 .
- the invention comprises a casing with the necessary length to transform the well into a giant bearing which shall operate protected by the layer of lubricant oil which is injected from the outside. In this way, the tubing's internal wearing out, as a result of rods' friction, and the accelerated tubing's corrosion, as it occurs in conventional arrangements, are avoided.
- Tube 15 is made up of a succession of sections connected by means of joints 5 , as shown in FIG. 4 corresponding to detail B in FIG. 2 .
- Tube 14 is made up of a succession of sections connected by means of joints 16 , as shown in FIG. 5 corresponding to detail C pointed out in FIG. 2 .
- the upper section of tube 14 has a diameter reduction 17 from where it is connected to a pipe 18 with an articulated joint or “swivel” which ends at the production outlet 6 .
- the lower section of tube 14 shows an end defined by a tube 19 with holes through which the fluid extracted by the pump 10 flows, said pump is connected to such lower section of tube 14 by means of a rod 20 .
- tube 19 is enlarged and is indicated in FIG. 2 under reference D, where its holes 19 can be clearly seen.
- Tube 14 transmits output power and carries 100% of the fluid extracted from the bottom of the well to the surface along its inside.
- the oil film 21 between both tubes 14 and 15 prevents tube 15 internal corrosion and tube 14 external corrosion.
- a paint coating on the internal face of tube 14 which carries the fluid, contributes to prevent internal corrosion caused by it.
- the only modification on tube 14 consists in the structure of the threaded joint 16 , by adapting the connecting nipple (see detail C in FIG. 5 ) which allows to link both tubes without modifying their external diameter.
- the arrangement, subject matter of this invention basically consists of the use of two tubes, 14 and 15 , API standard manufacturing, of 2 3/8 -inch and 2 7/8 -inch respectively, which jointly form a “hydraulic bearing” from the surface to the bottom of the well, which can be lubricated by filling the “O” ring space between both tubes with clean oil and with the desired viscosity, for example SAE 10 .
- This lubricant prevents corrosion and attenuates the wearing out between both tubes 14 and 15 .
- This arrangement also allows the flowing of all the fluid produced along the inside of tube 14 with no internal moving parts, thus allowing the application of a paint coating in its inside in order to avoid internal corrosion.
- tubes holding different diameters for example 1.42-inch internal diameter, 1.88-inch external diameter within a 2 3/8 -inch internal diameter tube, or in other diameters, obtaining the same and before mentioned “hydraulic bearing” effect.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
- Jet Pumps And Other Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Joints Allowing Movement (AREA)
Abstract
Arrangement for hydrocarbon extraction in wells using progressive cavity pumps which consists of a rotating tube located inside a fixed tube which extend along the well casing. The rotating tube carries fluid from the bottom of the well to the surface. Between the rotating tube and the fixed tube there is an “O” ring space into which an anti-friction lubricant is injected between the external face of the rotating tube and the internal face of the fixed tube. The bottom end of the rotating tube has a section holding holes through which fluid flows into it, it is connected to the progressive cavity pump by means of a rod, and its top end is connected to a production outlet and to its propelling motor mechanism. The upper section of the fixed tube is connected to an anti-friction lubricant injection pipe in the space left between the rotating and the fixed tubes. This arrangement prevents the wearing out, as a result of friction and corrosion, of conventional tubings used in field wells where fluid extraction is carried out by means of progressive cavity pumps.
Description
- This invention refers to an arrangement for hydrocarbon extraction in wells using progressive cavity pumps, and more in particular it relates to an oil extraction tubing arrangement developed in order to reduce its wearing out as a result of friction and corrosion in field wells in which progressive cavity pumps or “PCP” are used.
- Within prior art as to this matter, it is worth mentioning that usually in hydrocarbon extraction field wells, power transmission from the surface engine to the bottom pumps “progressive cavity pumps” type, or PCP, is carried out by means of one or more metal rods or bars which rotate inside the metal tubing. As the production well depth may be of several hundred meters or over one thousand meters, it is impossible to avoid certain contact and friction between the tubing and the rods rotating inside it. The progressive cavity pump uses the oil which it pumps from the bottom of the well as a lubricant between the surfaces which suffer this friction, i.e. between the internal face of the tubing and the external face of the rods which rotate along its inside. One of the disadvantages arising from the friction between the bottom pump driving rods and the tubing appears as oil fields grow old, as the secondary recovery process increases the percentage of water in the “water-oil” mixture reaching amounts over 95%, bringing about poor lubrication and, in many cases, a combined situation of tubing wearing out due to friction and corrosion. As a consequence of the reiterated friction between rods and tubing the protective boundary layer breaks up—this layer is formed by the building up of a thin deposit of the hydrocarbon present in water and/or by the artificial injection of certain film coating product used as non-corrosive, should this latter method be used—causing tubing corrosion and wearing out. Therefore, it is extremely important to solve this serious problem as it causes considerable economic losses, clearly enough, as exploitation processes at oil fields must be interrupted until tubings are repaired or replaced.
- With the aim of solving the above mentioned problems, the arrangement subject matter of this invention has been developed, it allows to considerably reduce the tubings' “wearing out-corrosion-wearing out” combined problem, as it shall be explained below in the “how to put it into practice” proposal.
- The purpose of this invention is to provide an arrangement for hydrocarbon extraction in wells using progressive cavity pumps, this arrangement was developed with the aim of reducing wearing out as a result of friction and corrosion in conventional tubings used in field wells in which the extraction of fluids is carried out by means of progressive cavity pumps. This arrangement consists of a rotating tube located inside a fixed tube placed along the well casing. The rotating tube carries the fluid from the bottom of the well to the surface. Between the rotating tube and the fixed tube there is an “O” ring-type space into which an anti-friction lubricant is injected between the external face of the rotating tube and the internal face of the fixed tube. The bottom end of the rotating tube has a section with holes which allow fluids to flow into it and it is connected to the progressive cavity pump by means of a rod, its top end is connected to a production outlet and to its propelling motor mechanism. The upper section of the fixed tube is connected to an anti-friction lubricant injection pipe in the space left between the rotating tube and the fixed tube.
- For a better understanding and clarity of the purpose of this invention, it has been illustrated in several drawings which represent it according to the preferred ways in which to carry it out, all of them should be taken as examples, that is:
-
FIG. 1 outlines a typical example of a conventional arrangement for hydrocarbon extraction in wells using progressive cavity pumps. -
FIG. 2 outlines the arrangement for hydrocarbon extraction in wells using progressive cavity pumps, subject matter of this invention. -
FIGS. 3 to 6 respectively show the blown up details A, B, C and D of the arrangement shown inFIG. 2 . - It is worth mentioning that in
FIG. 1 , corresponding to the prior art, and in the following figures in which this invention is illustrated the same or equivalent parts are indicated with the same reference numbers in both cases. -
FIG. 1 shows that the illustrated example of a conventional pumping arrangement consists of acasing 1, with awellhead outlet 2, which holds inside atubing 3, which carries the fluid from the bottom of the well to the surface, formed by a succession ofsections 4 connected among them byjoints 5. Between thecasing 1 and thetubing 3 there is a longitudinally defined “O” ring-type space 13. Theupper section 4 of thetubing 3 which projects itself from the wellhead at the field's land T surface has aproduction outlet 6, through which the first of a succession ofrods 8 connected among them byjoints 9 passes as well as through astuffing box 7, thelast rod 8 at the tubing'slower section 4 is connected to abottom PCP pump 10. In order to drive the rotating movement of the group ofrods 8, and consequently to drive thepump 10, theupper rod 8 is connected to anelectric engine 11 by means of a belt-and-pulley transmission mechanism 12. - As it has already been stated, the
pump 10 uses the oil which it pumps from the bottom of the well as a lubricant between the surfaces subject to friction, i.e. between the internal face of thetubing 3 and the external face of therods 8 which rotate along its inside. As oil fields grow old the percentage of water present in the “water-oil” mixture increases, thus lubrication becomes poor causing the tubing's wearing out as a result of friction and corrosion until the protective boundary layer, formed as a consequence of the building up of a thin deposit of the hydrocarbon present in water, breaks up. - In
FIG. 2 the way in which this invention solves the problem of the wearing out of the pumping rods due to friction and their resulting corrosion is shown. As a matter of fact, the herein proposed arrangement, aimed at solving such problems, consists of a rotatingtube 14 located inside afixed tube 15, between which a space is left which serves as a lubricant oil container, as it can be seen inFIG. 3 , detailed under reference A in thisFIG. 2 . For the injection of the lubricant oil, the top end of thefixed tube 15 is connected to apipe 22 which can be accessed from land T surface. - In the preferred way of carrying it out which is described and drawn,
tubing 14 has a 23/8-inch section andtubing 15 has a 27/8-inch section, which is enough to achieve the necessary lubrication in order to avoid the wearing out oftube 14 as a result of friction withtube 15. That is to say, the invention comprises a casing with the necessary length to transform the well into a giant bearing which shall operate protected by the layer of lubricant oil which is injected from the outside. In this way, the tubing's internal wearing out, as a result of rods' friction, and the accelerated tubing's corrosion, as it occurs in conventional arrangements, are avoided. -
Tube 15 is made up of a succession of sections connected by means ofjoints 5, as shown inFIG. 4 corresponding to detail B inFIG. 2 . Tube 14 is made up of a succession of sections connected by means ofjoints 16, as shown inFIG. 5 corresponding to detail C pointed out inFIG. 2 . - The upper section of
tube 14 has adiameter reduction 17 from where it is connected to apipe 18 with an articulated joint or “swivel” which ends at theproduction outlet 6. The lower section oftube 14 shows an end defined by atube 19 with holes through which the fluid extracted by thepump 10 flows, said pump is connected to such lower section oftube 14 by means of arod 20. InFIG. 6 tube 19 is enlarged and is indicated inFIG. 2 under reference D, where itsholes 19 can be clearly seen. - Tube 14 transmits output power and carries 100% of the fluid extracted from the bottom of the well to the surface along its inside. The
oil film 21 between bothtubes 14 and 15 (see figure detail) preventstube 15 internal corrosion andtube 14 external corrosion. In addition, a paint coating on the internal face oftube 14, which carries the fluid, contributes to prevent internal corrosion caused by it. The only modification ontube 14 consists in the structure of the threadedjoint 16, by adapting the connecting nipple (see detail C inFIG. 5 ) which allows to link both tubes without modifying their external diameter. - In summary, the arrangement, subject matter of this invention, basically consists of the use of two tubes, 14 and 15, API standard manufacturing, of 23/8-inch and 27/8-inch respectively, which jointly form a “hydraulic bearing” from the surface to the bottom of the well, which can be lubricated by filling the “O” ring space between both tubes with clean oil and with the desired viscosity, for
example SAE 10. This lubricant prevents corrosion and attenuates the wearing out between bothtubes tube 14 with no internal moving parts, thus allowing the application of a paint coating in its inside in order to avoid internal corrosion. Also, a similar arrangement could be arranged with tubes holding different diameters, for example 1.42-inch internal diameter, 1.88-inch external diameter within a 23/8-inch internal diameter tube, or in other diameters, obtaining the same and before mentioned “hydraulic bearing” effect. - In this way important advantages are achieved as compared to already known and used arrangements, such as:
-
- By increasing the contact area between the two frictioning surfaces, contact pressure decreases. This contact pressure causes wearing out, thus having less contact pressure results in less wearing out (“hydraulic bearing” effect).
- It allows to reduce the number of revolutions per minute of the rotating
tube 14 which transmits power, as it bears higher torsion for holding a bigger diameter than the rods in conventional arrangements, giving it a greater moment of inertia, thus allowing a reduction in the number of friction cycles originated by the rotation frequency for the same power applied, since by transmitting higher torque it is able to rotate at a slower speed resulting in a lower number of wear-out cycles. - It allows to add an artificial lubricant, chosen by the user, between both frictioning surfaces, i.e. between
tubes - It allows to do without rods inside the tube which carries production towards the surface, thus being able to apply paint to prevent corrosion on its internal face.
Claims (5)
1. A arrangement for hydrocarbon extraction in wells using progressive cavity pumps, developed with the aim of reducing the wearing out as a result of friction and corrosion of conventional tubings used in oil field wells, characterized by comprising a rotating tube which carries fluid from the bottom of the well to the surface located inside a fixed tube along the well casing, and by having a space between such tubes which serves as a container for an anti-friction lubricant between the external face of the rotating tube against the internal face of the fixed tube, the bottom end of the rotating tube has a section holding holes through which fluid flows into it and it is connected to the progressive cavity pump by means of a rod, the top end of the rotating tube is connected to a production outlet and to its propelling motor mechanism, the top end of the fixed tube is connected to an anti-friction lubricant injection pipe in the space left between the rotating and fixed tubes.
2. The arrangement according to claim 1 , characterized because the upper section of the rotating tube has a diameter reduction from which such upper section is connected to the production outlet and to the mentioned motor mechanism by means of a swivel.
3. The arrangement according to claim 1 , characterized because the rotating tube is made up of a succession of interconnected sections by means of the threaded joints.
4. The arrangement according to claim 1 , characterized because the rotating tube is made up of a succession of interconnected sections.
5. The arrangement according to claim 1 , characterized because the internal face of the rotating tube is covered by a protective paint coating.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ARP20100102791 | 2010-07-30 | ||
ARP100102791A AR077348A1 (en) | 2010-07-30 | 2010-07-30 | PROVISION FOR THE EXTRACTION OF HYDROCARBONS IN WELLS THAT USE PROGRESSIVE CAVITY PUMPS. |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120034120A1 true US20120034120A1 (en) | 2012-02-09 |
Family
ID=44581746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/050,111 Abandoned US20120034120A1 (en) | 2010-07-30 | 2011-03-17 | Arrangement for hydrocarbon extraction in wells using progressive cavity pumps |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120034120A1 (en) |
AR (1) | AR077348A1 (en) |
BR (1) | BRPI1103813B1 (en) |
CA (1) | CA2747117C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014102717A2 (en) * | 2012-12-26 | 2014-07-03 | Serinpet Ltda. Representaciones Y Servicios De Petroleos | Artificial lifting system with base-mounted progressive cavity motor for extracting hydrocarbons |
CN113392483A (en) * | 2021-08-16 | 2021-09-14 | 中国石油集团川庆钻探工程有限公司 | Method and device for determining friction coefficient of shaft and method and device for determining friction resistance of shaft |
CN115234197A (en) * | 2021-04-23 | 2022-10-25 | 中国石油天然气股份有限公司 | Rope suspension device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202019104979U1 (en) | 2019-09-10 | 2019-11-19 | Netzsch Pumpen & Systeme Gmbh | System for pumping viscous or partially viscous media from a borehole to the earth's surface |
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US2456227A (en) * | 1945-09-25 | 1948-12-14 | Fmc Corp | Coupling stabilizer for moineau pumps |
US5417281A (en) * | 1994-02-14 | 1995-05-23 | Steven M. Wood | Reverse Moineau motor and pump assembly for producing fluids from a well |
US5725053A (en) * | 1996-08-12 | 1998-03-10 | Weber; James L. | Pump rotor placer |
US6523615B2 (en) * | 2000-03-31 | 2003-02-25 | John Gandy Corporation | Electropolishing method for oil field tubular goods and drill pipe |
US6557639B1 (en) * | 1999-10-18 | 2003-05-06 | Innovative Production Technologies Ltd. | Apparatus and method for pumping fluids for use with a downhole rotary pump |
US6886636B2 (en) * | 1999-05-18 | 2005-05-03 | Down Hole Injection, Inc. | Downhole fluid disposal apparatus and methods |
US20060060385A1 (en) * | 2004-09-17 | 2006-03-23 | Amaudric Du Chaffaut Benoit | Reverse-circulation drilling method and system |
US20130055544A1 (en) * | 2011-08-25 | 2013-03-07 | Smith International, Inc. | Spray system for application of adhesive to a stator tube |
-
2010
- 2010-07-30 AR ARP100102791A patent/AR077348A1/en active IP Right Grant
-
2011
- 2011-03-17 US US13/050,111 patent/US20120034120A1/en not_active Abandoned
- 2011-07-22 CA CA2747117A patent/CA2747117C/en active Active
- 2011-07-28 BR BRPI1103813-6A patent/BRPI1103813B1/en active IP Right Grant
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2456227A (en) * | 1945-09-25 | 1948-12-14 | Fmc Corp | Coupling stabilizer for moineau pumps |
US5417281A (en) * | 1994-02-14 | 1995-05-23 | Steven M. Wood | Reverse Moineau motor and pump assembly for producing fluids from a well |
US5725053A (en) * | 1996-08-12 | 1998-03-10 | Weber; James L. | Pump rotor placer |
US6886636B2 (en) * | 1999-05-18 | 2005-05-03 | Down Hole Injection, Inc. | Downhole fluid disposal apparatus and methods |
US6557639B1 (en) * | 1999-10-18 | 2003-05-06 | Innovative Production Technologies Ltd. | Apparatus and method for pumping fluids for use with a downhole rotary pump |
US6523615B2 (en) * | 2000-03-31 | 2003-02-25 | John Gandy Corporation | Electropolishing method for oil field tubular goods and drill pipe |
US20060060385A1 (en) * | 2004-09-17 | 2006-03-23 | Amaudric Du Chaffaut Benoit | Reverse-circulation drilling method and system |
US20130055544A1 (en) * | 2011-08-25 | 2013-03-07 | Smith International, Inc. | Spray system for application of adhesive to a stator tube |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014102717A2 (en) * | 2012-12-26 | 2014-07-03 | Serinpet Ltda. Representaciones Y Servicios De Petroleos | Artificial lifting system with base-mounted progressive cavity motor for extracting hydrocarbons |
WO2014102717A3 (en) * | 2012-12-26 | 2014-11-27 | Serinpet Ltda. Representaciones Y Servicios De Petroleos | Artificial lifting system with base-mounted progressive cavity motor for extracting hydrocarbons |
CN105074121A (en) * | 2012-12-26 | 2015-11-18 | 瑟瑞恩派特石油代理服务有限公司 | Artificial lifting system with base-mounted progressive cavity motor for extracting hydrocarbons |
US20160097280A1 (en) * | 2012-12-26 | 2016-04-07 | Serinpet Ltda. Representaciones Y Servicios De Petroleos | Artificial lifting system with base-mounted progressive cavity motor for extracting hydrocarbons |
RU2679775C2 (en) * | 2012-12-26 | 2019-02-12 | Серинпет Лтда. Репресентасионес И Сервисиос Де Петролеос | Atrificial lifting system with base-mounted progressive cavity motor for extracting hydrocarbonds |
RU2679775C9 (en) * | 2012-12-26 | 2019-03-13 | Серинпет Лтда. Репресентасионес И Сервисиос Де Петролеос | Atrificial lifting system with base-mounted progressive cavity motor for extracting hydrocarbonds |
US10465517B2 (en) * | 2012-12-26 | 2019-11-05 | Serinpet Ltda. Representaciones Y Servicios De Petroleos | Artificial lifting system with a progressive cavity pump driven by a progressive cavity motor for hydrocarbon extraction |
CN105074121B (en) * | 2012-12-26 | 2020-08-28 | 瑟瑞恩派特石油代理服务有限公司 | Artificial lift system with bottom mounted screw motor for extracting hydrocarbons |
CN115234197A (en) * | 2021-04-23 | 2022-10-25 | 中国石油天然气股份有限公司 | Rope suspension device |
CN113392483A (en) * | 2021-08-16 | 2021-09-14 | 中国石油集团川庆钻探工程有限公司 | Method and device for determining friction coefficient of shaft and method and device for determining friction resistance of shaft |
Also Published As
Publication number | Publication date |
---|---|
CA2747117C (en) | 2019-07-02 |
CA2747117A1 (en) | 2012-01-30 |
AR077348A1 (en) | 2011-08-17 |
BRPI1103813B1 (en) | 2020-10-13 |
BRPI1103813A2 (en) | 2013-04-16 |
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