CN214915004U - Profile control liquid preparation device with cleaning function for nitrogen foam flooding - Google Patents

Profile control liquid preparation device with cleaning function for nitrogen foam flooding Download PDF

Info

Publication number
CN214915004U
CN214915004U CN202021964925.5U CN202021964925U CN214915004U CN 214915004 U CN214915004 U CN 214915004U CN 202021964925 U CN202021964925 U CN 202021964925U CN 214915004 U CN214915004 U CN 214915004U
Authority
CN
China
Prior art keywords
disc
tank body
top surface
profile control
hole
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.)
Active
Application number
CN202021964925.5U
Other languages
Chinese (zh)
Inventor
崔仕章
刘小芳
程家家
郭鑫
齐高政
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.)
Shandong Deshi Petroleum Equipment Co ltd
Original Assignee
Shandong Deshi Petroleum Equipment Co ltd
Deshi Energy Technology Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Deshi Petroleum Equipment Co ltd, Deshi Energy Technology Group Co Ltd filed Critical Shandong Deshi Petroleum Equipment Co ltd
Priority to CN202021964925.5U priority Critical patent/CN214915004U/en
Application granted granted Critical
Publication of CN214915004U publication Critical patent/CN214915004U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

The utility model provides a nitrogen gas foam displacement of reservoir oil is with profile control liquid distribution device, which comprises a tank body, the middle part fixed mounting feed liquor pipe of jar body one side, the lower part fixed mounting intake pipe of jar body one side, the bottom fixed mounting drain pipe of jar body opposite side, first through-hole is seted up at the center of jar body top surface, rotate the installation pivot through sealed bearing in the first through-hole, the upper end of the lower extreme fixed connection square bar of pivot, the top of jar internal portion is equipped with the disc, the square hole is seted up at the center of disc top surface, the square bar passes in the square hole. The utility model discloses a mutually supporting between motor, pivot, square bar, disc, reciprocal lead screw isotructure can play the effect of stirring to the liquid of jar internal through reciprocal lead screw around the rotation of square bar and reciprocating of disc, promotes the mixing of jar internal material, through the stirring to jar internal material equidirectional, can improve the mixing efficiency and the mixed effect of material, the person's of facilitating the use.

Description

Profile control liquid preparation device with cleaning function for nitrogen foam flooding
Technical Field
The utility model belongs to join in marriage liquid device field, specifically speaking are a nitrogen gas foam displacement of reservoir oil is with profile control liquid device of joining in marriage with cleaning function.
Background
The nitrogen foam flooding refers to that a foaming agent is injected into a stratum along with nitrogen at the same time, and the purpose of improving the recovery ratio is achieved under the combined action. The present indoor research evaluation of this technique is also relatively mature, all have the implementation of certain scale in each oil field, the effect is whole better, need mix the water that contains foaming agent and other additives and nitrogen gas in the blending tank when joining in marriage the liquid and pour into in the oil well, because the requirement to quality of water is lower when joining in marriage the liquid, consequently can contain more impurity in the liquid after mixing, can form the attachment at the blending tank inner wall after long-time the use, cause certain corruption to the inner wall of blending tank easily, influence the life of blending tank, reduce the security of blending tank.
SUMMERY OF THE UTILITY MODEL
The utility model provides a nitrogen gas foam displacement of reservoir oil is with profile control liquid preparation device with cleaning function for solve the defect among the prior art.
The utility model discloses a following technical scheme realizes:
a profile control liquid distribution device with a cleaning function for nitrogen foam flooding comprises a tank body, wherein a liquid inlet pipe is fixedly installed in the middle of one side of the tank body, an air inlet pipe is fixedly installed in the lower portion of one side of the tank body, a liquid outlet pipe is fixedly installed at the bottom of the other side of the tank body, a first through hole is formed in the center of the top surface of the tank body, a rotating shaft is rotatably installed in the first through hole through a sealing bearing, the lower end of the rotating shaft is fixedly connected with the upper end of a square rod, a circular disc is arranged above the interior of the tank body, a square hole is formed in the center of the top surface of the circular disc, the square rod penetrates through the square hole, second through holes are respectively formed in the two sides of the top surface of the circular disc, a lead screw nut is respectively and fixedly installed in the lead screw nut, reciprocating lead screws are respectively and threadedly installed in the lower portions of the two sides of the rotating shaft, the lower portions of the two sides of the rotating shaft are respectively and fixedly connected with one side of a support plate, the bottom surfaces of the support plates are respectively connected with upper end bearings of the corresponding reciprocating lead screws, and inner gear rings are arranged above the circular disc, the two sides of the inner gear ring are fixedly connected with the inner wall of the tank body through connecting rods respectively, gears are fixedly mounted on the upper portion of the periphery of the reciprocating screw rod respectively, the gears are all meshed with the inner gear ring in the axial direction, a plurality of third through holes are formed in the top surface of the disc, a motor is fixedly mounted on the top surface of the tank body through a support, and the output end of the motor is fixedly connected with the upper end of the rotating shaft.
According to the profile control liquid preparation device with the cleaning function for nitrogen foam flooding, the center of the bottom surface of the inner wall of the tank body is provided with the groove, and the lower end of the square rod is connected with the groove bearing.
According to the profile control liquid preparation device with the cleaning function for nitrogen foam flooding, the two sides of the periphery of the rotating shaft are respectively and fixedly provided with the L-shaped scraper.
According to the profile control liquid distribution device with the cleaning function for nitrogen foam flooding, the two sides of the bottom of the periphery of the square rod are respectively and fixedly provided with the horizontally arranged U-shaped scraper.
According to the profile control liquid distribution device with the cleaning function for nitrogen foam flooding, the top surfaces of the transverse plates above the U-shaped scraper plates are respectively connected with the lower end bearings of the corresponding reciprocating screw rods.
According to the profile control liquid preparation device with the cleaning function for nitrogen foam flooding, the fan blades are fixedly installed on the lower portion of the periphery of the square rod.
The utility model has the advantages that: when the novel using device is used, firstly, water, foaming agent and other additives are introduced into the tank body through the liquid inlet pipe, then nitrogen is introduced into the tank body through the air inlet pipe for mixing, liquid is added into the tank body through the liquid inlet pipe, the motor is electrified for working, the output end of the motor drives the disc to synchronously rotate through the rotating shaft and the square rod, the rotating shaft drives the reciprocating lead screws to synchronously rotate through the connecting plates, the two reciprocating lead screws do circular motion around the square rod under the driving of the corresponding connecting plates, the reciprocating lead screws can drive the liquid in the tank body to rotate when rotating, the effect of stirring the liquid in the tank body is achieved, and the mixing of raw materials is promoted; when the reciprocating screw rod rotates around the square rod, the reciprocating screw rod drives the corresponding gear to synchronously move, the gear is meshed with the inner gear ring, namely the gear performs circular motion around the inner gear ring, at the moment, the corresponding reciprocating screw rod is driven by the gear to rotate, when the reciprocating screw rod rotates, the screw rod nut in threaded connection with the corresponding reciprocating screw rod drives the disc to move up and down along the reciprocating screw rod, when the disc moves up and down, the wall scraping effect can be realized on the periphery of the inner wall of the tank body, impurities attached to the inner wall of the tank body are scraped, the effect of cleaning the inner wall is realized, the impurities are greatly reduced to form attachment and deposition in the tank body, and the damage of the impurities to the inner wall of the tank body is effectively reduced; in the process that the disc moves up and down, part of liquid passes through the third through hole, and the liquid in the tank body can be stirred by moving the disc up and down, so that the mixing of the raw materials is further promoted; the utility model discloses a motor, the apparatus further comprises a rotating shaft, the square bar, the disc, mutually support between the reciprocating screw isotructure, can play the effect of stirring around the rotation of square bar and reciprocating of disc to the internal liquid of jar through reciprocating screw, promote the mixing of the internal material of jar, through the stirring to the internal material equidirectional of jar, can improve the mixing efficiency and the mixed effect of material, the person of facilitating the use's use, can scrape the inner wall of the jar body through reciprocating of disc, come under will be attached to the impurity clearance of the internal wall of jar, finally along with the internal liquid discharge of jar, play clear effect, it adheres to at the inner wall of the jar body to reduce impurity, reduce the harm of impurity to the jar body, improve the life of the jar body, improve the utility model discloses a security, the person of facilitating the use's use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of the present invention; FIG. 2 is an enlarged view of the view from the direction A of FIG. 1; fig. 3 is an enlarged view of part i of fig. 1.
Description of the drawings: 1. The novel liquid level gauge comprises a tank body, 2, a liquid inlet pipe, 3, an air inlet pipe, 4, a liquid outlet pipe, 5, a first through hole, 6, a rotating shaft, 7, a square rod, 8, a disc, 9, a square hole, 10, a second through hole, 11, a screw nut, 12, a reciprocating screw, 13, a supporting plate, 14, an inner gear ring, 15, a connecting rod, 16, a gear, 17, a third through hole, 18, a groove, 19, an L-shaped scraper, 20, a U-shaped scraper, 21, fan blades, 22 and a motor 22.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A profile control liquid distribution device with a cleaning function for nitrogen foam flooding comprises a tank body 1, a liquid inlet pipe 2 is fixedly installed in the middle of one side of the tank body 1, an air inlet pipe 3 is fixedly installed at the lower portion of one side of the tank body 1, a liquid outlet pipe 4 is fixedly installed at the bottom of the other side of the tank body 1, valves are arranged on the inner sides of the liquid inlet pipe 2, the air inlet pipe 3 and the liquid outlet pipe 4, a first through hole 5 is formed in the center of the top surface of the tank body 1, a rotating shaft 6 is rotatably installed in the first through hole 5 through a sealing bearing, two ends of the rotating shaft 6 are located outside the first through hole 5, the lower end of the rotating shaft 6 is fixedly connected with the upper end of a square rod 7, a disc 8 is arranged above the inner portion of the tank body 1, the periphery of the disc 8 is in contact fit with the inner wall of the tank body 1, a square hole 9 is formed in the center of the top surface of the disc 8, the square rod 7 penetrates through the square hole 9, the square rod 7 is in sliding fit with the square hole 9, second through holes 10 are respectively formed in two sides of the top surface of the disc 8, screw nuts 11 are respectively and fixedly installed in the second through holes 10, reciprocating screw rods 12 are respectively and threadedly installed in the screw nuts 11, the lower ends of the reciprocating screw rods 12 are respectively in contact fit with the bottom surface of the tank body 1, the lower parts of two sides of the rotating shaft 6 are respectively and fixedly connected with one side of a supporting plate 13, the supporting plates 13 are both positioned in the tank body 1, the bottom surfaces of the supporting plates 13 are respectively connected with upper end bearings of the corresponding reciprocating screw rods 12, an inner gear ring 14 is arranged above the disc 8, the inner gear ring 14 is coaxial with the rotating shaft 6, two sides of the inner gear ring 14 are respectively and fixedly connected with the inner wall of the tank body 1 through connecting rods 15, one end of each connecting rod 15 is respectively and fixedly connected with one side corresponding to the inner wall of the tank body 1, the other end of each connecting rod 15 is respectively and fixedly connected with one side corresponding to the periphery of the inner gear ring 14, gears 16 are respectively and fixedly installed on the upper parts of the periphery of the reciprocating screw rods 12, the gears 16 are respectively engaged with the inner gear ring gears 14, and a plurality of third through holes 17 are formed in the top surface of the disc 8, the third through holes 17 and the second through holes 10 are arranged in a staggered mode, the motor 22 is fixedly installed on the top face of the tank body 1 through a support, the motor 22 is connected with a power circuit, and the output end of the motor 22 is fixedly connected with the upper end of the rotating shaft 6. When the novel pot is used, firstly, water, foaming agent and other additives are introduced into the pot body 1 through the liquid inlet pipe 2, then nitrogen is introduced into the pot body 1 through the air inlet pipe 3 for mixing, liquid is added into the pot body 1 through the liquid inlet pipe 2, the motor 22 is electrified for working, the output end of the motor 22 drives the disc 8 to synchronously rotate through the rotating shaft 6 and the square rod 7, the rotating shaft 6 drives the reciprocating screw rods 12 to synchronously rotate through the connecting plate 13, the two reciprocating screw rods 12 do circular motion around the square rod 7 under the driving of the corresponding connecting plate 13, the reciprocating screw rods 12 can drive the liquid in the pot body 1 to rotate when rotating, the effect of stirring the liquid in the pot body 1 is achieved, and the mixing of raw materials is promoted; when the reciprocating screw 12 rotates around the square rod 7, the reciprocating screw 12 drives the corresponding gear 15 to synchronously move, because the gears 15 are all meshed with the inner gear ring 14, namely the gear 15 makes a circular motion around the inner gear ring 14, at the moment, the gear 15 drives the corresponding reciprocating screw 12 to rotate, when the reciprocating screw 12 rotates, the screw nut 11 in threaded connection with the corresponding reciprocating screw 12 drives the disc 8 to move up and down along the reciprocating screw 12, when the disc 8 moves up and down, the wall scraping effect can be realized on the periphery of the inner wall of the tank body 1, impurities attached to the inner wall of the tank body 1 are scraped, the effect of cleaning the inner wall is realized, the impurities are greatly reduced to form attachment and deposition in the tank body 1, and the damage of the impurities to the inner wall of the tank body 1 is effectively reduced; in the process that the disc 8 moves up and down, part of liquid passes through the third through hole 17, and the liquid in the tank body 1 can be stirred by moving the disc 8 up and down, so that the mixing of the raw materials is further promoted; the utility model discloses a motor 22, the apparatus further comprises a rotating shaft 6, square bar 7, disc 8, mutually support between the reciprocating screw 12 isotructure, can play the effect of stirring around the rotation of square bar 7 and reciprocating of disc 8 to the liquid in the jar body 1 through reciprocating screw 12, promote the mixture of the internal material of jar, through the stirring to the internal material equidirectional of jar, can improve the mixing efficiency and the mixed effect of material, the person of facilitating the use's use, can scrape the inner wall of the jar body 1 through reciprocating of disc 8, come down in the impurity clearance that will adhere to the internal wall of jar 1, finally along with the liquid discharge in the jar body 1, play clear effect, it adheres to at the internal wall of the jar body 1 to reduce impurity, reduce the harm of impurity to the jar body 1, improve the life of the jar body 1, improve the utility model discloses a safety, the person of facilitating the use's use.
Specifically, as shown in fig. 1, a groove 18 is formed in the center of the bottom surface of the inner wall of the tank 1 according to the present embodiment, the lower end of the square rod 7 is connected to the groove 18 by a bearing, and the lower end of the rod 7 is located in the groove 18. This structural design can make jar body 1 provide corresponding support to the lower extreme of square bar 7, stability when can improving square bar 7 and rotate.
Specifically, as shown in fig. 1, in the present embodiment, L-shaped scrapers 19 are respectively fixedly installed on two sides of the periphery of the rotating shaft 6, top surfaces of horizontal plates of the L-shaped scrapers 19 are in contact fit with the top surface of the inner wall of the tank body 1, and outer sides of vertical plates of the L-shaped scrapers 19 are in contact fit with the periphery of the inner wall of the tank body 1. L type scraper blade 19 can rotate along with pivot 6 is synchronous to play the attachment of scraping the effect of wall with jar body 1 inner wall top surface to the top surface of jar body 1 inner wall and scrape, the outside of L template 19 riser can be to changing 1 inner wall upper portion all around play the effect of scraping the wall, improves the utility model discloses a clean effect.
Further, as shown in fig. 1, in the present embodiment, two sides of the bottom of the periphery of the square bar 7 are respectively and fixedly provided with a U-shaped scraper 20, the outer sides of the vertical plates of the U-shaped scrapers 20 are in contact fit with the bottom of the periphery of the inner wall of the tank 1, and the bottom surfaces of the horizontal plates below the U-shaped scrapers 20 are in contact fit with the bottom of the tank 1. Two U type scraper blades 20 can rotate along with the square bar 7 is synchronous to play the effect of scraping the wall to the bottom surface of jar body 1 inner wall, scrape the attachment of jar body 1 inner wall bottom surface, further improve the utility model discloses a clean effect.
Further, as shown in fig. 1, the top surfaces of the transverse plates above the U-shaped scrapers 20 of the present embodiment are respectively connected with the lower end bearings of the corresponding reciprocating screw rods 12. This structural design can play the effect of support to reciprocal lead screw 12, stability when improving reciprocal lead screw 12 and rotating.
Further, as shown in fig. 1, the fan blades 21 are fixedly installed at the lower portion of the outer periphery of the square bar 7, and the fan blades 21 are located in the two U-shaped scrapers 20. Flabellum 21 can rotate along with square bar 7 is synchronous, can produce ascending motive force to the liquid of the inside below of the jar body 1 when flabellum 21 rotates, avoids impurity to form the deposit in the 1 bottom of the jar body, also can promote the mixture of the inside liquid of the jar body 1 when the liquid of the inside below of the jar body is rebound, improves the utility model discloses a mixing effect.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (6)

1. The utility model provides a nitrogen gas foam displacement of reservoir oil is with profile control liquid distribution device with cleaning function, includes a jar body (1), middle part fixed mounting feed liquor pipe (2) of jar body (1) one side, lower part fixed mounting intake pipe (3) of jar body (1) one side, bottom fixed mounting drain pipe (4) of jar body (1) opposite side, its characterized in that: the center of the top surface of the tank body (1) is provided with a first through hole (5), a rotating shaft (6) is rotatably arranged in the first through hole (5) through a sealed bearing, the lower end of the rotating shaft (6) is fixedly connected with the upper end of a square rod (7), a disc (8) is arranged above the interior of the tank body (1), a square hole (9) is arranged in the center of the top surface of the disc (8), the square rod (7) penetrates through the square hole (9), two sides of the top surface of the disc (8) are respectively provided with a second through hole (10), a screw nut (11) is respectively and fixedly arranged in the second through holes (10), a reciprocating screw rod (12) is respectively and threadedly arranged in the screw nut (11), the lower parts of two sides of the rotating shaft (6) are respectively and fixedly connected with one side of a support plate (13), the bottom surface of the support plate (13) is respectively connected with the upper end bearing of the corresponding reciprocating screw rod (12), an inner gear ring (14) is arranged above the disc (8), two sides of the inner gear ring (14) are respectively and fixedly connected with the inner wall of the tank body (1) through a connecting rod (15), the upper portion of the periphery of the reciprocating screw rod (12) is fixedly provided with a gear (16) respectively, the gear (16) is meshed with the inner gear ring (14) in a direction, the top surface of the disc (8) is provided with a plurality of third through holes (17), the top surface of the tank body (1) is fixedly provided with a motor (22) through a support, and the output end of the motor (22) is fixedly connected with the upper end of the rotating shaft (6).
2. The profile control and liquid distribution device with the cleaning function for nitrogen foam flooding, according to claim 1, is characterized in that: a groove (18) is formed in the center of the bottom surface of the inner wall of the tank body (1), and the lower end of the square rod (7) is in bearing connection with the groove (18).
3. The profile control and liquid distribution device with the cleaning function for nitrogen foam flooding, according to claim 1, is characterized in that: and L-shaped scrapers (19) are respectively fixedly arranged on two sides of the periphery of the rotating shaft (6).
4. The profile control and liquid distribution device with the cleaning function for nitrogen foam flooding, according to claim 1, is characterized in that: and two sides of the bottom of the periphery of the square rod (7) are respectively and fixedly provided with a U-shaped scraper (20) which is transversely arranged.
5. The profile control and liquid distribution device with the cleaning function for nitrogen foam flooding, according to claim 4, is characterized in that: the top surface of the transverse plate above the U-shaped scraper (20) is respectively connected with the lower end bearings of the corresponding reciprocating screw rods (12).
6. The profile control and liquid distribution device with the cleaning function for nitrogen foam flooding, according to claim 4, is characterized in that: the lower part of the periphery of the square rod (7) is fixedly provided with a fan blade (21).
CN202021964925.5U 2020-09-10 2020-09-10 Profile control liquid preparation device with cleaning function for nitrogen foam flooding Active CN214915004U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021964925.5U CN214915004U (en) 2020-09-10 2020-09-10 Profile control liquid preparation device with cleaning function for nitrogen foam flooding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021964925.5U CN214915004U (en) 2020-09-10 2020-09-10 Profile control liquid preparation device with cleaning function for nitrogen foam flooding

Publications (1)

Publication Number Publication Date
CN214915004U true CN214915004U (en) 2021-11-30

Family

ID=79034322

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021964925.5U Active CN214915004U (en) 2020-09-10 2020-09-10 Profile control liquid preparation device with cleaning function for nitrogen foam flooding

Country Status (1)

Country Link
CN (1) CN214915004U (en)

Similar Documents

Publication Publication Date Title
CN114042410A (en) Powder, thick liquids compounding equipment that civil engineering field was used
CN214263124U (en) Environmental protection spraying type emulsified asphalt jar belt cleaning device
CN214915004U (en) Profile control liquid preparation device with cleaning function for nitrogen foam flooding
CN212687578U (en) Concentrated reposition of redundant personnel of salt thick liquid and elutriation device
CN217703960U (en) Take belt cleaning device's cement mortar mixer
CN214131255U (en) High-viscosity modified emulsified regenerated asphalt preparation device
CN214862938U (en) Production process system of epoxy antistatic wear-resistant floor coating
CN213506907U (en) Protein fermentation tank
CN210163165U (en) Horizontal flow type combined air flotation
CN209920220U (en) Concrete mixing equipment convenient to strike off clout
CN211864634U (en) Efficient lubricating oil agitating unit
CN210356759U (en) Agitating unit is used in production of petroleum auxiliary agent
CN220261463U (en) Mixing equipment for concrete production
CN220522626U (en) Grouting device for layering opening under surrounding rock filling reconstruction mode
CN219650243U (en) Discharging device for concrete production
CN218281376U (en) Safe heat preservation type pitch batching jar
CN217609227U (en) Dough mixer with automatic material supplementing function
CN219376751U (en) Lubricating oil production stirring mixing arrangement of convenient clearance
CN208786254U (en) A kind of mud curing agent mixing equipment
CN219208021U (en) Micro-nano super-oxygen bubble machine
CN219744509U (en) Biax agitator with scrape material function
CN219730599U (en) Air floatation machine for sewage treatment
CN217802435U (en) Intelligent building concrete mixing equipment
CN216987318U (en) Lubricating oil production blending device utilizing friction reduction
CN217752040U (en) Efficient and environment-friendly concrete mixing equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20230913

Address after: 257000 Shengli Industrial Park, Dongying City, Shandong Province (south of No. 4 road and west of No. 9 road of Shengyuan sub district office)

Patentee after: SHANDONG DESHI PETROLEUM EQUIPMENT Co.,Ltd.

Address before: 257081 Shengli Industrial Park, Dongying District, Dongying City, Shandong Province

Patentee before: SHANDONG DESHI PETROLEUM EQUIPMENT Co.,Ltd.

Patentee before: Deshi Energy Technology Group Co.,Ltd.

TR01 Transfer of patent right