CN207795168U - Pumping rod anti-corrosive apparatus - Google Patents
Pumping rod anti-corrosive apparatus Download PDFInfo
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- CN207795168U CN207795168U CN201721883806.5U CN201721883806U CN207795168U CN 207795168 U CN207795168 U CN 207795168U CN 201721883806 U CN201721883806 U CN 201721883806U CN 207795168 U CN207795168 U CN 207795168U
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Abstract
The utility model provides a kind of pumping rod anti-corrosive apparatus, including the shell in the outside wall surface of metal sucker rod is arranged, enclosure interior is equipped with the accommodating cavity for placing anti-corrosion of metal part, the metal activity of anti-corrosion of metal part is higher than the metal activity of metal sucker rod, the shell wall of shell is equipped with multiple first through hole being connected to accommodating cavity, and first through hole is for making well liquid be contacted with anti-corrosion of metal part.Pumping rod anti-corrosive apparatus provided by the utility model is simple in structure, and simple installation, cost is relatively low, sucker rod can be effectively prevent to be corroded in well liquid.
Description
Technical field
The utility model is related to a kind of oil field equipment technical field more particularly to a kind of pumping rod anti-corrosive apparatus.
Background technology
In the apparatus field of oil exploitation, sucker rod is a kind of slender rod piece in rod-pumped well, above connects polished rod, under connect pumping
The piston rod of oil pump, to play passing power.Between the high water-cut stage in certain oil fields, for example, Shanshan Oil Field, oil gas
Sucker rod in well is placed on underground for a long time, the CO containing high-content in well liquid2With the chlorion of higher concentration, to aggravate
The disconnected de- phenomenon of the corrosion on sucker rod surface, seriously affects the normal work of sucker rod, how to prevent the corrosion of underground sucker rod from being
One of urgent problem to be solved in oilfield exploitation at present.
Existing pumping rod anti-corrosive method mainly adds corrosion inhibiter into well liquid, and corrosion inhibiter is with concentration appropriate and shape
When formula is present in environment (medium), the chemical substance or compound of material corrosion are prevented or slowed down.Corrosion inhibiter is generally according to anti-
Rotten position is divided into anodic corrosion inhibitor, cathode type corrosion inhibiter and hybrid corrosion inhibitor, and wherein anodic corrosion inhibitor is in metal watch
Surface anode area and Action of Metal Ions, generate oxide or hydroxide oxidation film is covered on anode and forms protective film, inhibit
Metal is dissolved into liquid.Cathode type corrosion inhibiter can be reacted with the cathodic region of metal surface in water, and reaction product is in the moon
Pole deposition film forming, with thickening for film, the reaction of cathode release electronics is blocked.There are two types of property in the molecule of hybrid corrosion inhibitor
The opposite polar group of matter can be adsorbed on clean metal surface and form monomolecular film, they can form a film in anode, also can be
Cathode filming prevents water and diffusion of the oxygen in water to metal surface, has played corrosion inhibition.
However corrosion inhibiter is susceptible to the non-uniform phenomenon of mixing in well liquid, therefore cause anti-corrosion effect uneven.And
And the operating process that corrosion inhibiter is added into well liquid is relatively complicated, and the mode cost for adding corrosion inhibiter is higher, it is difficult to it is a wide range of
Promoted the use of in oilfield exploitation.
Utility model content
At least one in order to solve the problems, such as to mention in background technology, the utility model provides a kind of pumping rod anti-corrosive apparatus
Simple in structure, simple installation, cost is relatively low, sucker rod can be effectively prevent to be corroded in well liquid.
To achieve the goals above, the utility model provides a kind of pumping rod anti-corrosive apparatus, including setting is pumped in metal
Shell in the outside wall surface of bar, enclosure interior are equipped with the accommodating cavity for placing anti-corrosion of metal part, and the metal of anti-corrosion of metal part is lived
Sprinkle the metal activity that property is higher than metal sucker rod.
The shell wall of shell is equipped at least one first through hole being connected to accommodating cavity, and first through hole is for making well liquid and gold
Belong to the contact of anti-corrosion part.
In above-mentioned pumping rod anti-corrosive apparatus, optionally, shell is tubular structure, and tubular structure is set in metal pumping
The periphery of beam hanger forms accommodating cavity with the annular region between the inner wall of tubular structure and the outer wall of metal sucker rod.
In above-mentioned pumping rod anti-corrosive apparatus, optionally, being internally provided with for tubular structure is worn for metal sucker rod
The second through-hole, the extending direction of the second through-hole is located at the axis direction of tubular structure, the outer wall and tubular structure of the second through-hole
Inner wall between form accommodating cavity.
In above-mentioned pumping rod anti-corrosive apparatus, optionally, the side wall of shell is sticked on the outer wall of metal sucker rod,
And the length direction of shell and the extending direction of metal sucker rod are arranged in the same direction.
In above-mentioned pumping rod anti-corrosive apparatus, optionally, one and/or two in the both ends of shell along its length
A is hatch frame, and hatch frame is connected to accommodating cavity, and hatch frame is used to pick and place the anti-corrosion of metal part in accommodating cavity.
Hatch frame is equipped with the lid for closing hatch frame.
In above-mentioned pumping rod anti-corrosive apparatus, optionally, the length of shell be the length of metal sucker rod 1/3 to
1/2。
In above-mentioned pumping rod anti-corrosive apparatus, optionally, positioned at the two of the length direction of shell on metal sucker rod
Side is respectively equipped with centralizer.
In above-mentioned pumping rod anti-corrosive apparatus, optionally, the surface irregularity of anti-corrosion of metal part.
In above-mentioned pumping rod anti-corrosive apparatus, optionally, first through hole has multiple, and multiple first through hole are along shell
Length direction interval is arranged.
In above-mentioned pumping rod anti-corrosive apparatus, optionally, first through hole is circular hole or square hole.
Pumping rod anti-corrosive apparatus provided by the utility model is put by the way that shell is arranged outside metal sucker rod in shell
Anti-corrosion of metal part is set, the metal active of metal sucker rod is higher than using the metal active of non-corrosive metal (NCM) part, and be based on primary battery
Antiseptic principle so that the ion in well liquid is reacted with the higher non-corrosive metal (NCM) part of metal active, to avoid metal sucker rod table
Face is corroded；By the way that the accommodating cavity for placing anti-corrosion of metal part is arranged inside housings, it is convenient for the replacement of anti-corrosion of metal part；It is logical
The first through hole that setting is connected to accommodating cavity on the outer wall of shell is crossed, so that well liquid contacts generation adequately with anti-corrosion of metal part
Chemical reaction improves the anti-corrosion effect of metal sucker rod；By set the length of shell to the length of metal sucker rod 1/3
To 1/2, ensure that the length of anti-corrosion of metal part disclosure satisfy that the anti-corrosion of metal sucker rod entirety, and do not influence metal sucker rod and exist
The activity of underground.Therefore pumping rod anti-corrosive apparatus provided by the utility model is simple in structure, is easily installed operation, and cost compared with
It is low, it is suitable for promoting the use of on a large scale in oilfield exploitation.
The construction of the utility model and its other purpose of utility model and advantageous effect will be in conjunction with the accompanying drawings
Description of preferred embodiments and it is more obvious and easy to understand.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is made simply to introduce, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is that the structure that the pumping rod anti-corrosive apparatus that the utility model embodiment one provides is mounted on metal sucker rod is shown
It is intended to；
Fig. 2 is the structural schematic diagram for the pumping rod anti-corrosive apparatus that the utility model embodiment one provides；
Fig. 3 is the side view for the pumping rod anti-corrosive apparatus that the utility model embodiment one provides；
Fig. 4 is that the structure that the pumping rod anti-corrosive apparatus that the utility model embodiment two provides is mounted on metal sucker rod is shown
It is intended to；
Fig. 5 is the structural schematic diagram for the pumping rod anti-corrosive apparatus that the utility model embodiment two provides；
Fig. 6 is the side view for the pumping rod anti-corrosive apparatus that the utility model embodiment two provides；
Fig. 7 is the structural schematic diagram for the pumping rod anti-corrosive apparatus that the utility model embodiment three provides；
Fig. 8 is the structural representation of the anti-corrosion of metal part in the pumping rod anti-corrosive apparatus that the utility model embodiment four provides
Figure；
Fig. 9 is the structural representation of the anti-corrosion of metal part in the pumping rod anti-corrosive apparatus that the utility model embodiment five provides
Figure.
Reference sign：
10- metal sucker rods；
20- shells；
21- accommodating cavities；
22- first through hole；
The second through-holes of 23-；
24- lids；
30- centralizers；
40- anti-corrosion of metal parts.
Specific implementation mode
To keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with the excellent of the utility model
The attached drawing in embodiment is selected, the technical scheme in the embodiment of the utility model is further described in more detail.In the accompanying drawings, certainly
Begin to indicate same or similar component or component with the same or similar functions to same or similar label eventually.It is described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Below with reference to the implementation of attached drawing description
Example is exemplary, it is intended to for explaining the utility model, and should not be understood as limiting the present invention.Based on this practicality
Embodiment in novel, the every other reality that those of ordinary skill in the art are obtained without creative efforts
Example is applied, shall fall within the protection scope of the present invention.The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should broadly understood, and can also be by the indirect phase of intermediary for example, can make to be fixedly connected
Even, can be the interaction relationship of the connection or two elements inside two elements.For the ordinary skill people of this field
For member, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Embodiment one
Fig. 1 is that the structure that the pumping rod anti-corrosive apparatus that the utility model embodiment one provides is mounted on metal sucker rod is shown
It is intended to.Fig. 2 is the structural schematic diagram for the pumping rod anti-corrosive apparatus that the utility model embodiment one provides.Fig. 3 is the utility model
The side view for the pumping rod anti-corrosive apparatus that embodiment one provides.
Existing pumping rod anti-corrosive method mainly adds corrosion inhibiter into well liquid, corrosion inhibiter according to its type difference,
Corrosion-resistant principle is also different.Anodic corrosion inhibitor is to generate oxide in metal surface anode region and Action of Metal Ions
Or hydroxide oxidation film is covered on anode and forms protective film, it is suppressed that metal is dissolved into liquid.Cathode type corrosion inhibiter energy
It is reacted in water with the cathodic region of metal surface, reaction product is deposited in cathode and formed a film, with thickening for film, cathode release electricity
The reaction of son is blocked.There are two types of incompatible polar groups in the molecule of hybrid corrosion inhibitor, can be adsorbed on clean gold
Metal surface forms monomolecular film, they can form a film in anode, also water and oxygen in water can be prevented to metal in cathode filming
The diffusion on surface, has played corrosion inhibition.However corrosion inhibiter is susceptible to the non-uniform phenomenon of mixing in well liquid, therefore cause to prevent
Rotten effect is uneven.And the operating process that corrosion inhibiter is added into well liquid is relatively complicated, and adds the mode cost of corrosion inhibiter
It is higher, it is difficult to be promoted the use of in oilfield exploitation on a large scale.
To solve the above problems, with reference to shown in attached drawing 1 to attached drawing 3, the utility model embodiment one provides a kind of sucker rod
Anti-corrosive apparatus, including the shell 20 that is arranged in the outside wall surface of metal sucker rod 10, shell 20 are internally provided with for placing metal
The accommodating cavity 21 of anti-corrosion part 40, the metal activity of anti-corrosion of metal part 40 are higher than the metal activity of metal sucker rod 10.
The shell wall of shell 20 is equipped at least one first through hole 22 being connected to accommodating cavity 21, and first through hole 22 is for making
Well liquid contacts concurrent biochemical reaction with anti-corrosion of metal part 40, to avoid well liquid from being chemically reacted with metal sucker rod 10.
It should be noted that pumping rod anti-corrosive apparatus provided in this embodiment is to take out the setting of anti-corrosion of metal part 40 in metal
In the shell 20 in the outside of beam hanger 10, come into full contact with to occur with well liquid punching for ease of the anti-corrosion of metal part 40 inside shell 20
Chemical reaction, is provided with first through hole 22 on the shell wall of shell 20, which flows into the appearance of shell 20 for well liquid
It sets in chamber 21 and is reacted with anti-corrosion of metal part 40.
Further, the antiseptic principle of anti-corrosion of metal part 40 provided in this embodiment is to be based on primary battery anti-corrosion, the metal
The metal activity of anti-corrosion part 40 be higher than metal sucker rod 10 metal activity, the metal sucker rod 10 be generally iron material or
Steel material is made, and wherein the metal activity of ferro element is in an intermediate position in metal activity sequence list, compared with ferro element
The high member of metal activity is known as potassium, calcium, sodium, magnesium, aluminum and zinc element, therefore the present embodiment can be selected wherein more commonly
Aluminum material or Zinc material prepare anti-corrosion of metal part 40.
Specifically chemical reaction process can be：The metal of material with different metal activity is in same electrolyte
There is different electrode potentials when in solution, and identical metal also has different electrode electricity in different electrolyte solutions
Position.Between the different metal of electrode potential will appearance potential it is poor, potential difference can push electronics to flow shape according to certain direction
At electric current.Electron stream out position metal anode region, be easy to be corroded；And it is obtained in the local metal for thering is electric current to flow into
Electronics will not then be corroded.The etch-proof principle of sucker rod is sought in the pit shaft stream full of complicated ingredient and electrolyte
In body, a large amount of electronics is supplemented to downhole tubular goods, makes protected metal generally in electron excess state, makes metallic atom not
It is easy to lose electronics and become in ion-solubility to the fluid full of electrolyte, realizes the tubing string anti-corrosion of underground metal material.
Further, shell 20 is tubular structure, and tubular structure is set in the periphery of metal sucker rod 10, in tubular knot
Annular region between the inner wall and the outer wall of metal sucker rod 10 of structure forms accommodating cavity 21.
Tubular structure is internally provided with the second through-hole 23 worn for metal sucker rod 10, the extending direction of the second through-hole 23
Accommodating cavity 21 is formed between the axis direction of tubular structure, the outer wall of metal sucker rod 10 and the inner wall of tubular structure.
With reference to shown in attached drawing 1, attached drawing 2 and attached drawing 3, shell 20 provided in this embodiment is set in outside metal sucker rod 10
Cricoid protection zone can be formed in the periphery of sucker rod in this way in week, there is more preferably anti-corrosion effect.
As a kind of achievable embodiment, one and/or two in the both ends of shell 20 along its length is to open
Mouth structure, hatch frame are connected to accommodating cavity 21, and hatch frame is used to pick and place the anti-corrosion of metal part 40 in accommodating cavity 21.Opening knot
Structure is equipped with the lid 24 for closing hatch frame.
It should be noted that for ease of the dismounting and replacement of anti-corrosion of metal part 40, can be grown in the accommodating cavity 21 of shell 20
Hatch frame is arranged in the wherein one or both ends for spending direction, and hatch frame upper cover sets lid 24.The lid 24 can pass through card
The end face of firmware and hatch frame connects, so that lid 24 opens or closes.
As a kind of achievable embodiment, the length of shell 20 is the 1/3 to 1/2 of the length of metal sucker rod 10.
It should be noted that the minimum length of shell 20 could be provided as the 1/3 of the length of metal sucker rod 10, in this way may be used
To ensure that entire metal sucker rod 10 is completely covered in the anti-corrosion range of anti-corrosion of metal part 40, anti-corrosion blind area is avoided the occurrence of.And shell
20 maximum length could be provided as the 1/2 of the length of metal sucker rod 10, since metal sucker rod 10 is multiple end to end
Mode be arranged in underground, and metal sucker rod 10 is in underground work, needs the environment for adapting to underground pit shaft to occur
The inclination or deflection of certain angle, therefore the length of the shell 20 crosses the normal activities of conference influence metal sucker rod 10.
Further, the both sides of the length direction on metal sucker rod 10 positioned at shell 20 are respectively equipped with centralizer 30.
It should be noted that the centralizer 30 being arranged on metal sucker rod 10 can ensure metal sucker rod 10 in underground well
The centre position of pit shaft is always positioned in cylinder after activity, metal sucker rod 10 is avoided to deviate and blocking or clamping stagnation occurs.And it should
Centralizer 30 can also ensure well liquid being uniformly distributed around shell 20 and anti-corrosion of metal part 40, uniform anti-to ensure
Rotten effect.
As a kind of achievable embodiment, first through hole 22 has multiple, length of the multiple first through hole 22 along shell 20
Spend the setting of direction interval.In the present embodiment, multiple first through hole 22 can also be spaced equidistance and be uniformly arranged, in this way can be with
Improve uniform anti-corrosion effect.
Further, with reference to shown in attached drawing 2, first through hole 22 can be square hole.And anti-corrosion of metal part 40 can be with surface
Smooth structure.
The pumping rod anti-corrosive apparatus that the utility model embodiment one provides, by the way that shell is arranged outside metal sucker rod 10
20, shell 20 is interior to place anti-corrosion of metal part 40, is lived higher than the metal of metal sucker rod 10 using the metal active of non-corrosive metal (NCM) part
Property, and it is based on primary battery antiseptic principle so that the ion in well liquid is reacted with the higher non-corrosive metal (NCM) part of metal active, to
10 surface of metal sucker rod is avoided to be corroded；By the way that the accommodating cavity for placing anti-corrosion of metal part 40 is arranged inside shell 20
21, it is convenient for the replacement of anti-corrosion of metal part 40；By the way that the first through hole 22 being connected to accommodating cavity 21 is arranged on the outer wall of shell 20,
So that well liquid contacts generation adequately chemical reaction with anti-corrosion of metal part 40, the anti-corrosion effect of metal sucker rod 10 is improved；Pass through
It sets the length of shell 20 to 1/3 to the 1/2 of the length of metal sucker rod 10, ensures that the length of anti-corrosion of metal part 40 can expire
The whole anti-corrosion of pure gold category sucker rod 10, and activity of the metal sucker rod 10 in underground is not influenced.Therefore the utility model carries
The pumping rod anti-corrosive apparatus of confession is simple in structure, is easily installed operation, and cost is relatively low, is suitable for pushing away on a large scale in oilfield exploitation
It is wide to use.
Embodiment two
Fig. 4 is that the structure that the pumping rod anti-corrosive apparatus that the utility model embodiment two provides is mounted on metal sucker rod is shown
It is intended to.Fig. 5 is the structural schematic diagram for the pumping rod anti-corrosive apparatus that the utility model embodiment two provides.Fig. 6 is the utility model
The side view for the pumping rod anti-corrosive apparatus that embodiment two provides.With reference to shown in attached drawing 4 to attached drawing 6, in the base of above-described embodiment one
On plinth, the utility model embodiment two provides the pumping rod anti-corrosive apparatus of another structure, the preventing sucker rod that the present embodiment two provides
The distinctive points of rotten device and the pumping rod anti-corrosive apparatus of embodiment one are that the structure of shell 20 is different.
Specifically, the side wall of shell 20 is sticked on the outer wall of metal sucker rod 10, and the length direction of shell 20 and gold
The extending direction for belonging to sucker rod 10 is arranged in the same direction.
It should be noted that shell 20 is that the side wall of side is sticked in the side wall of metal sucker rod 10 in the present embodiment
On, the weight of 10 privileged sites of metal sucker rod may be implemented compared to the set-up mode in embodiment one in such set-up mode
Point anti-corrosion, to improve local anti-corrosion effect.It in actual use, can selective use embodiment one or reality as needed
20 set-up mode of shell in example two is applied, the present embodiment is to this and is not limited.
Other technical characteristics are identical as embodiment one, and can reach identical technique effect, and this is no longer going to repeat them.
The pumping rod anti-corrosive apparatus that the utility model embodiment two provides, by the way that shell is arranged outside metal sucker rod 10
20, shell 20 is interior to place anti-corrosion of metal part 40, is lived higher than the metal of metal sucker rod 10 using the metal active of non-corrosive metal (NCM) part
Property, and it is based on primary battery antiseptic principle so that the ion in well liquid is reacted with the higher non-corrosive metal (NCM) part of metal active, to
10 surface of metal sucker rod is avoided to be corroded；By the way that the accommodating cavity for placing anti-corrosion of metal part 40 is arranged inside shell 20
21, it is convenient for the replacement of anti-corrosion of metal part 40；By the way that the first through hole 22 being connected to accommodating cavity 21 is arranged on the outer wall of shell 20,
So that well liquid contacts generation adequately chemical reaction with anti-corrosion of metal part 40, the anti-corrosion effect of metal sucker rod 10 is improved；Pass through
It sets the length of shell 20 to 1/3 to the 1/2 of the length of metal sucker rod 10, ensures that the length of anti-corrosion of metal part 40 can expire
The whole anti-corrosion of pure gold category sucker rod 10, and activity of the metal sucker rod 10 in underground is not influenced.Therefore the utility model carries
The pumping rod anti-corrosive apparatus of confession is simple in structure, is easily installed operation, and cost is relatively low, is suitable for pushing away on a large scale in oilfield exploitation
It is wide to use.
Embodiment three
Fig. 7 is the structural schematic diagram for the pumping rod anti-corrosive apparatus that the utility model embodiment three provides.With reference to 7 institute of attached drawing
Show, on the basis of above-described embodiment one and embodiment two, the utility model embodiment three provides the sucker rod of the third structure
Anti-corrosive apparatus, the pumping rod anti-corrosive apparatus of embodiment three and the pumping rod anti-corrosive apparatus of embodiment one difference lies in：First through hole
22 structure is different.
Specifically, first through hole 22 is circular hole.It should be noted that in actual use, the shape of first through hole 22 can
It is used with selection as needed, the shape of first through hole 22 is not limited to shown in embodiment one and the present embodiment, as long as can be with
Ensure well liquid circulation.
Other technical characteristics are identical as embodiment one or embodiment two, and can reach identical technique effect, herein no longer
It repeats one by one.
The pumping rod anti-corrosive apparatus that the utility model embodiment three provides, by the way that shell is arranged outside metal sucker rod 10
20, shell 20 is interior to place anti-corrosion of metal part 40, is lived higher than the metal of metal sucker rod 10 using the metal active of non-corrosive metal (NCM) part
Property, and it is based on primary battery antiseptic principle so that the ion in well liquid is reacted with the higher non-corrosive metal (NCM) part of metal active, to
10 surface of metal sucker rod is avoided to be corroded；By the way that the accommodating cavity for placing anti-corrosion of metal part 40 is arranged inside shell 20
21, it is convenient for the replacement of anti-corrosion of metal part 40；By the way that the first through hole 22 being connected to accommodating cavity 21 is arranged on the outer wall of shell 20,
So that well liquid contacts generation adequately chemical reaction with anti-corrosion of metal part 40, the anti-corrosion effect of metal sucker rod 10 is improved；Pass through
It sets the length of shell 20 to 1/3 to the 1/2 of the length of metal sucker rod 10, ensures that the length of anti-corrosion of metal part 40 can expire
The whole anti-corrosion of pure gold category sucker rod 10, and activity of the metal sucker rod 10 in underground is not influenced.Therefore the utility model carries
The pumping rod anti-corrosive apparatus of confession is simple in structure, is easily installed operation, and cost is relatively low, is suitable for pushing away on a large scale in oilfield exploitation
It is wide to use.
Example IV
Fig. 8 is the structural representation of the anti-corrosion of metal part in the pumping rod anti-corrosive apparatus that the utility model embodiment four provides
Figure.With reference to shown in attached drawing 8, on the basis of above-described embodiment one, embodiment two and embodiment three, the utility model embodiment four
The pumping rod anti-corrosive apparatus of 4th kind of structure, the pumping rod anti-corrosive apparatus of example IV and the preventing sucker rod of previous embodiment are provided
Rotten device difference lies in：The surface texture of anti-corrosion of metal part 40 is different.
Specifically, the surface irregularity of anti-corrosion of metal part 40, it can be the bulge-structure shape of striated that this is uneven
At, the anti-corrosion of metal part 40 of surface irregularity can provide attachment point for the example in well liquid, to improve chemical reaction
Effect, preferably realize the anti-corrosion of metal sucker rod 10.
Other technical characteristics are identical as embodiment one, embodiment two and embodiment three, and can reach identical technique effect,
This is no longer going to repeat them.
The pumping rod anti-corrosive apparatus that the utility model embodiment four provides, by the way that shell is arranged outside metal sucker rod 10
20, shell 20 is interior to place anti-corrosion of metal part 40, is lived higher than the metal of metal sucker rod 10 using the metal active of non-corrosive metal (NCM) part
Property, and it is based on primary battery antiseptic principle so that the ion in well liquid is reacted with the higher non-corrosive metal (NCM) part of metal active, to
10 surface of metal sucker rod is avoided to be corroded；By the way that the accommodating cavity for placing anti-corrosion of metal part 40 is arranged inside shell 20
21, it is convenient for the replacement of anti-corrosion of metal part 40；By the way that the first through hole 22 being connected to accommodating cavity 21 is arranged on the outer wall of shell 20,
So that well liquid contacts generation adequately chemical reaction with anti-corrosion of metal part 40, the anti-corrosion effect of metal sucker rod 10 is improved；Pass through
It sets the length of shell 20 to 1/3 to the 1/2 of the length of metal sucker rod 10, ensures that the length of anti-corrosion of metal part 40 can expire
The whole anti-corrosion of pure gold category sucker rod 10, and activity of the metal sucker rod 10 in underground is not influenced.Therefore the utility model carries
The pumping rod anti-corrosive apparatus of confession is simple in structure, is easily installed operation, and cost is relatively low, is suitable for pushing away on a large scale in oilfield exploitation
It is wide to use.
Embodiment five
Fig. 9 is the structural representation of the anti-corrosion of metal part in the pumping rod anti-corrosive apparatus that the utility model embodiment five provides
Figure.With reference to shown in attached drawing 9, on the basis of above-described embodiment one, embodiment two and embodiment three, the utility model embodiment five
The pumping rod anti-corrosive apparatus of 5th kind of structure, the pumping rod anti-corrosive apparatus of embodiment five and the preventing sucker rod of previous embodiment are provided
Rotten device difference lies in：The surface texture of anti-corrosion of metal part 40 is different.
Specifically, the surface irregularity of anti-corrosion of metal part 40, it can be that dot bulge structure is formed that this is uneven,
The anti-corrosion of metal part 40 of surface irregularity can provide attachment point for the example in well liquid, to improve the effect of chemical reaction
Fruit preferably realizes the anti-corrosion of metal sucker rod 10.
Other technical characteristics are identical as embodiment one, embodiment two and embodiment three, and can reach identical technique effect,
This is no longer going to repeat them.
The pumping rod anti-corrosive apparatus that the utility model embodiment five provides, by the way that shell is arranged outside metal sucker rod 10
20, shell 20 is interior to place anti-corrosion of metal part 40, is lived higher than the metal of metal sucker rod 10 using the metal active of non-corrosive metal (NCM) part
Property, and it is based on primary battery antiseptic principle so that the ion in well liquid is reacted with the higher non-corrosive metal (NCM) part of metal active, to
10 surface of metal sucker rod is avoided to be corroded；By the way that the accommodating cavity for placing anti-corrosion of metal part 40 is arranged inside shell 20
21, it is convenient for the replacement of anti-corrosion of metal part 40；By the way that the first through hole 22 being connected to accommodating cavity 21 is arranged on the outer wall of shell 20,
So that well liquid contacts generation adequately chemical reaction with anti-corrosion of metal part 40, the anti-corrosion effect of metal sucker rod 10 is improved；Pass through
It sets the length of shell 20 to 1/3 to the 1/2 of the length of metal sucker rod 10, ensures that the length of anti-corrosion of metal part 40 can expire
The whole anti-corrosion of pure gold category sucker rod 10, and activity of the metal sucker rod 10 in underground is not influenced.Therefore the utility model carries
The pumping rod anti-corrosive apparatus of confession is simple in structure, is easily installed operation, and cost is relatively low, is suitable for pushing away on a large scale in oilfield exploitation
It is wide to use.
In the description of the present invention, it should be understood that term "upper", "lower", "front", "rear", "vertical" ", water
It is flat ", "top", "bottom", "inner", the orientation of the instructions such as "outside" or position relationship be that orientation based on ... shown in the drawings or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, rather than indicates either to imply signified device or element
It must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In the description of the utility model, the meaning of " plurality " is two or more, accurately specifically provide unless otherwise.
Term " first ", " second ", " third " in the description and claims of this application and above-mentioned attached drawing, "
The (if present)s such as four " are for distinguishing similar object, without being used to describe specific sequence or precedence.It should manage
The data that solution uses in this way can be interchanged in the appropriate case, so that embodiments herein described herein for example can be to remove
Sequence other than those of illustrating or describe herein is implemented.In addition, term " comprising " and " having " and theirs is any
Deformation, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, production
Product or equipment those of are not necessarily limited to clearly to list step or unit, but may include not listing clearly or for this
The intrinsic other steps of processes, method, product or equipment or unit a bit.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of pumping rod anti-corrosive apparatus, which is characterized in that described including the shell in the outside wall surface of metal sucker rod is arranged
Enclosure interior is equipped with the accommodating cavity for placing anti-corrosion of metal part, and the metal activity of the anti-corrosion of metal part is higher than the metal
The metal activity of sucker rod；
The shell wall of the shell is equipped at least one first through hole being connected to the accommodating cavity, and the first through hole is for making
Well liquid is contacted with the anti-corrosion of metal part.
2. pumping rod anti-corrosive apparatus according to claim 1, which is characterized in that the shell is tubular structure, the cylinder
Shape structure is set in the periphery of the metal sucker rod, in the outer wall of the inner wall of the tubular structure and the metal sucker rod
Between annular region form the accommodating cavity.
3. pumping rod anti-corrosive apparatus according to claim 2, which is characterized in that the tubular structure is internally provided with for institute
The second through-hole that metal sucker rod is worn is stated, the extending direction of second through-hole is located at the axis direction of the tubular structure,
The accommodating cavity is formed between the outer wall and the inner wall of the tubular structure of second through-hole.
4. pumping rod anti-corrosive apparatus according to claim 1, which is characterized in that the side wall of the shell is sticked in the gold
On the outer wall for belonging to sucker rod, and the length direction of the shell and the extending direction of the metal sucker rod are arranged in the same direction.
5. according to claim 1-4 any one of them pumping rod anti-corrosive apparatus, which is characterized in that the shell is along its length
Both ends in one and/or two be hatch frame, the hatch frame is connected to the accommodating cavity, the hatch frame use
In picking and placeing the anti-corrosion of metal part in the accommodating cavity；
The hatch frame is equipped with the lid for closing the hatch frame.
6. according to claim 1-4 any one of them pumping rod anti-corrosive apparatus, which is characterized in that the length of the shell is institute
State the 1/3 to 1/2 of the length of metal sucker rod.
7. according to claim 1-4 any one of them pumping rod anti-corrosive apparatus, which is characterized in that the metal sucker rod is upper
It is respectively equipped with centralizer in the both sides of the length direction of the shell.
8. according to claim 1-4 any one of them pumping rod anti-corrosive apparatus, which is characterized in that the table of the anti-corrosion of metal part
Face is uneven.
9. according to claim 1-4 any one of them pumping rod anti-corrosive apparatus, which is characterized in that the first through hole has more
A, multiple first through hole are arranged along the length direction interval of the shell.
10. according to claim 1-4 any one of them pumping rod anti-corrosive apparatus, which is characterized in that the first through hole is circle
Hole or square hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721883806.5U CN207795168U (en) | 2017-12-28 | 2017-12-28 | Pumping rod anti-corrosive apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721883806.5U CN207795168U (en) | 2017-12-28 | 2017-12-28 | Pumping rod anti-corrosive apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795168U true CN207795168U (en) | 2018-08-31 |
Family
ID=63279488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721883806.5U Active CN207795168U (en) | 2017-12-28 | 2017-12-28 | Pumping rod anti-corrosive apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795168U (en) |
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2017
- 2017-12-28 CN CN201721883806.5U patent/CN207795168U/en active Active
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