CN203129970U - Locking rupture-proof sucker rod - Google Patents
Locking rupture-proof sucker rod Download PDFInfo
- Publication number
- CN203129970U CN203129970U CN 201320118927 CN201320118927U CN203129970U CN 203129970 U CN203129970 U CN 203129970U CN 201320118927 CN201320118927 CN 201320118927 CN 201320118927 U CN201320118927 U CN 201320118927U CN 203129970 U CN203129970 U CN 203129970U
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- rod
- weight
- dowel bar
- hollow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a locking rupture-proof sucker rod which comprises a hollow sucker rod, a transmission rod and a weighting block disposed in the hollow sucker rod. One end of the hollow sucker rod is provided with an internal thread, and the other end of the hollow sucker rod is provided with an external thread matching with the internal thread. The internal-threaded end of the hollow sucker rod is provided with a through hole, and the transmission rod is mounted in the through hole. The gap between the upper end of the weighting block and the inner wall of the hollow sucker rod is filled with shock-absorbing material. A shock-absorbing area is reserved between the weighting block and the transmission rod and is filled with the shock-absorbing material. The gap between the transmission rod and the through hole is filled with graphite powder. The locking rupture-proof sucker rod has the advantages that play of the weighting block in the sucker rod is prevented so that stress deformation of the transmission rod, damage of the sucker rod and damage of a centralizer caused by the play of the weighting block in the sucker rod are avoided; and the connecting manner of the sucker is changed into the threaded connection, and accordingly connecting is more stable and the hollow sucker rod is prevented from rupturing and parting at the connection.
Description
Technical field
The utility model relates to the sucker rod in a kind of sucker-rod pumping field, relates in particular to the disconnected sucker rod of a kind of anticreep.
Background technology
Sucker-rod pumping is one of present petroleum industry oil production method the most commonly used, and rod pumping system is a work system up and down reciprocatingly, when up because the fluid column load, the effect of the whole tension power of sucker rod.And when descending; owing to be subjected to the multiple factor affecting such as frictional force between liquid flowing resistance, plunger and the pump barrel; usually can be subjected to a power that stops plunger to move downward; because the existence of this power; make one section above sucker rod of plunger be subjected to the effect of compressive stress, people sucker rod in descending process neither pressurized also not this point of tension call the point of neutralization.Just because of the existence of the point of neutralization, cause the following rod string of the point of neutralization stressed fairly obvious, cause sucker rod wearing and tearing, disconnected taking off easily.In order to address this problem, oil field method commonly used is a certain section sucker rod that employing is special more than plunger, because this sucker rod diameter is thick, weight is big, say the descending resistance that can increase stiffness, offset plunger to a certain extent, but the problem of the point of neutralization is appointed right existence, and with the increase that increases the weight of weight (or length of weighted lever), the point of neutralization moves on gradually.Therefore, the following stressed problem that produces of weighted lever of the point of neutralization does not solve.
Application number is that 200620077193.1 Chinese utility model patent discloses a kind of sucker rod sucker rod weighting tube in application life that prolongs, comprise at least two sections hollow rods, dowel bar, one end of every section hollow rod is provided with box, the other end is provided with pin thread, the pin thread of epimere hollow rod is connected in the box of adjacent hypomere hollow rod, be provided with weight in every section hollow rod, be provided with intercommunicating pore in the pin thread, dowel bar is socketed in the intercommunicating pore, and between the weight of dowel bar overhead in adjacent two sections hollow rods.Owing to be provided with weight in every section hollow rod of this utility model, and between the weight of dowel bar overhead in adjacent two sections hollow rods, at this sucker rod that increases the weight of during in the motion of doing up and down reciprocatingly, weight also can be along with the motion of sucker rod in hollow rod play up and down, inwall and the dowel bar of the bump sucker rod that weight will not stop in play up and down, for a long time like this, will damage sucker rod or cause the dowel bar compressive deformation, can't play the effect of power transmission, and because the play of weight also can cause whole sucker rod vibration, accelerate the wearing and tearing between centralizer and the oil pipe, shortened the application life of centralizer.What the connection of sucker rod was adopted is the connected mode of pin thread and box, when such connected mode is subjected to bigger impact force at sucker rod, circumferentially rotating mutually between the sucker rod might be taken place, and it is disconnected to cause sucker rod to take off in the junction.
The utility model content
In order to overcome above-mentioned because the defective that the sucker rod that play causes about the weight damages and shortened centralizer application life, the utility model provides a kind of anticreep sucker rod that breaks, this sucker rod has stoped the play of weight in sucker rod, thereby avoided by weight in sucker rod play and the dowel bar compressive deformation and the damage of sucker rod and the damage of centralizer that cause, and the connected mode of pin thread and box is no longer adopted in the connection between the sucker rod, avoided because circumferentially rotating mutually between the sucker rod causes that taking off of sucker rod is disconnected.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
The anticreep sucker rod that breaks, comprise hollow rod, dowel bar and weight, described weight is arranged in the hollow rod, it is characterized in that: an end of described hollow rod is provided with internal thread, the other end is provided with the external screw thread that is complementary with it, the end that described hollow rod arranges internal thread is provided with intercommunicating pore, described dowel bar is installed in the intercommunicating pore, fill out in the space between the upper end of described weight and the hollow rod inwall and be provided with vibration-absorptive material, be provided with the vibration absorber between described weight and the dowel bar, fill out in the vibration absorber and be provided with vibration-absorptive material.
Described vibration-absorptive material is the damping shock absorption material.
Described dowel bar is made by high-alloy steel.
Described weight is lead.
The utlity model has following advantage:
1, fills out in the space between the upper end of the utility model weight and the hollow rod inwall and be provided with vibration-absorptive material, be provided with the vibration absorber between described weight and the dowel bar, fill out in the vibration absorber and be provided with vibration-absorptive material, be filled with graphite powder in the slit between described dowel bar and the intercommunicating pore.In the upper end of weight and the space between the hollow rod inwall, fill out and be provided with vibration-absorptive material and between weight and dowel bar, be provided with the vibration absorber, fill out in the vibration absorber and be provided with vibration-absorptive material and can well cushion weight to the impact force of sucker rod and the weight impact force to dowel bar, avoid weight to damage sucker rod and dowel bar, because the adding of vibration-absorptive material is arranged, sucker rod is subjected to less vibration force, this also with regard to having avoided because the centralizer that the play of weight causes wearing and tearing, prolonged the application life of centralizer, in the slit between dowel bar and the intercommunicating pore, be filled with graphite powder and can guarantee that dowel bar transmits the gravity of weight downwards uniformly, and reduced the wearing and tearing between dowel bar and the intercommunicating pore.The connected mode of hollow rod no longer adopts the connected mode of pin thread and box, but adopt the ways of connecting of screw thread to connect, it is more stable to be threaded, even circumferential movement takes place between the hollow rod, it is disconnected also can not to cause sucker rod to take off in the junction.
2, dowel bar is made with high-alloy steel, has further guaranteed the rigidity of dowel bar, prevents dowel bar because compressive deformation causes weight ineffective.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram.
Mark 1, vibration-absorptive material among the figure, 2, external screw thread, 3, weight, 4, graphite powder, 5, dowel bar, 6, internal thread, 7, hollow rod.
The specific embodiment
As shown in Figure 1, the utility model comprises hollow rod 7, dowel bar 5 and weight 3, described weight 3 is arranged in the hollow rod 7, one end of described hollow rod 7 is provided with internal thread 6, the other end is provided with external screw thread 2, the internal thread 6 of epimere hollow rod is connected in the external screw thread 2 of next section hollow rod, the end that described hollow rod 7 arranges internal thread 6 is provided with intercommunicating pore, described dowel bar 5 is installed in the intercommunicating pore, fill out in the space between the upper end of described weight 3 and hollow rod 7 inwalls and be provided with vibration-absorptive material 1, be provided with the vibration absorber between described weight 3 and the dowel bar 5, fill out in the vibration absorber and be provided with vibration-absorptive material 1, be filled with graphite powder 4 in the slit between described dowel bar 5 and the intercommunicating pore, vibration-absorptive material 1 is the damping shock absorption material, dowel bar 5 is made by high-alloy steel, and weight 3 is leads.
Claims (4)
1. the disconnected sucker rod of anticreep, comprise hollow rod (7), dowel bar (5) and weight (3), described weight (3) is arranged in the hollow rod (7), it is characterized in that: an end of described hollow rod (7) is provided with internal thread (6), the other end is provided with the external screw thread (2) that is complementary with it, the end that described hollow rod arranges internal thread is provided with intercommunicating pore, described dowel bar (5) is installed in the intercommunicating pore, fill out in the space between the upper end of described weight (3) and hollow rod (7) inwall and be provided with vibration-absorptive material (1), be provided with the vibration absorber between described weight (3) and the dowel bar (5), fill out in the vibration absorber and be provided with vibration-absorptive material (1), be filled with graphite powder (4) in the slit between described dowel bar (5) and the intercommunicating pore.
2. the disconnected sucker rod of anticreep according to claim 1, it is characterized in that: described vibration-absorptive material (1) is the damping shock absorption material.
3. the disconnected sucker rod of anticreep according to claim 1, it is characterized in that: described dowel bar (5) is made by high-alloy steel.
4. according to claim 1, the disconnected sucker rod of 2 or 3 described anticreeps, it is characterized in that: described weight (3) is lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320118927 CN203129970U (en) | 2013-03-15 | 2013-03-15 | Locking rupture-proof sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320118927 CN203129970U (en) | 2013-03-15 | 2013-03-15 | Locking rupture-proof sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203129970U true CN203129970U (en) | 2013-08-14 |
Family
ID=48937961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320118927 Expired - Fee Related CN203129970U (en) | 2013-03-15 | 2013-03-15 | Locking rupture-proof sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203129970U (en) |
-
2013
- 2013-03-15 CN CN 201320118927 patent/CN203129970U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140315 |