CN210317233U - Swabbing blowout preventer - Google Patents
Swabbing blowout preventer Download PDFInfo
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- CN210317233U CN210317233U CN201921351607.9U CN201921351607U CN210317233U CN 210317233 U CN210317233 U CN 210317233U CN 201921351607 U CN201921351607 U CN 201921351607U CN 210317233 U CN210317233 U CN 210317233U
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- swabbing
- outer cylinder
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Abstract
The utility model discloses a swabbing blowout preventer, including connecting the swabbing lubricator on the wellhead assembly, the outside of swabbing lubricator is equipped with and can prevent the liquid of swabbing lubricator department spreads outward and the protection urceolus of collecting. The utility model discloses covered a protection urceolus at the periphery of drawing lubricator, this protection urceolus neither influences the well head and prevents spouting safe technical requirement, can form collecting effectively to produced outdiffusion's liquid (including the liquid that outwards splashes and strike off the trickling liquid that forms) again in the pumping operation to prevent that these outdiffusion's liquid from causing the pollution to the surrounding environment, it is effectual to the protection of environment, and the practicality is strong.
Description
Technical Field
The utility model relates to a well head blowout preventer that oil gas well bore adopted specifically is a well head blowout preventer that oil gas well used when swabbing operation.
Background
Pumping is a method of discharging the liquid in the well out of the well by using a pumping rod (i.e., a pumping rod) with a rubber sleeve to lift and lower in the downhole pipeline (such as an oil pipe, a water pipe and the like). The swabbing operation is mainly used for working conditions such as low-yield wells and marginal wells, the liquid level in the well can be continuously reduced through the swabbing operation, and then liquid in a near-well zone can continuously flow to the bottom of the well, so that the technical purposes of thoroughly draining accumulated liquid in the near-well zone and releasing natural gas productivity are achieved.
When the oil and gas well is subjected to pumping operation, blowout prevention equipment needs to be connected to a wellhead device. At present, a common blowout preventer connected to a wellhead device during swabbing operation is a hydraulic swabbing blowout preventer, which mainly comprises a guide device, a stabilizing device, a sealing device, a joint and the like; during swabbing operation, a hydraulic pump is used for pressurizing the inside of the blowout prevention box to 5-16 MPa, and the sealing plug is compressed to seal the wellhead, so that the wellhead is guaranteed not to be polluted.
The hydraulic pumping blowout prevention box has a good use effect in the initial application stage, but in the later use stage, along with the accumulation of frequent friction between a pumping rope (usually a steel wire rope) and the blowout prevention box in pumping operation, a sealing structure (comprising a packing, a rubber plug sealing ring and the like) in the blowout prevention box can be damaged, so that residues brought by pumping operation are stuck and/or plugged in the sealing structure, the sealing is not tight, the sealing pressure of 5-16 MPa can not be kept in the blowout prevention box, pumping sewage overflows, the wellhead device and the surrounding environment are polluted, a sealing structural member in the hydraulic pumping blowout prevention box needs to be frequently replaced, the operation cost and the operation risk are increased, and the operation time efficiency is also influenced.
The technical solution adopted in the industry at present is to wrap a layer of geomembrane or color stripe cloth on the surface of the hydraulic pumping blowout prevention box so as to prevent the pumping sewage from overflowing. Although the technical measures can prevent the pumping sewage from overflowing, the hydraulic pumping blowout prevention box cannot be completely sealed, so that a pumping rope can bring a large amount of residual liquid out of the hydraulic pumping blowout prevention box in the running process, the residual liquid is diffused outwards (including an outwards splashing phenomenon and a flowing phenomenon formed by scraping) due to the influence of friction, collision and the like in the running process of the pumping rope, and the outward diffused residual liquid is scattered on peripheral equipment including a workover rig, a wellhead device and the like due to the failure of forming effective collection, so that the pollution to the surrounding environment is caused, and the corrosion to the peripheral equipment is also caused.
SUMMERY OF THE UTILITY MODEL
The technical purpose of the utility model is that: aiming at the particularity of the pumping operation and the technical defects of the conventional pumping blowout prevention equipment, the pumping blowout prevention device can effectively collect the outward diffused liquid generated in the pumping operation on the premise of not influencing the blowout prevention safety requirement of a wellhead so as to prevent the pollution of the outward diffused liquid to the surrounding environment.
The technical purpose of the utility model is realized through the following technical scheme: the swabbing blowout preventer comprises a swabbing lubricator connected to a wellhead device, wherein a protective outer cylinder capable of preventing liquid at the swabbing lubricator from diffusing outwards and collecting is arranged outside the swabbing lubricator.
Preferably, the erection height of the outer protection cylinder on the wellhead device is greater than the height of the pumping lubricator in the enclosure, and a wooden seal head capable of enabling a pumping rope on the pumping lubricator to penetrate out is connected to the upper portion of the outer protection cylinder. Furthermore, the wood seal head on the outer protection barrel mainly comprises a wood seal half body I and a wood seal half body II, the wood seal half body I and the wood seal half body II are respectively connected to the upper part of the outer protection barrel through corresponding connecting pieces in a detachable combined assembly structure, a rope penetrating hole for allowing a swabbing rope on the swabbing blowout prevention pipe to penetrate is formed between the wood seal half body I and the wood seal half body II, and the diameter of the rope penetrating hole is 1-2 mm larger than the outer diameter of the swabbing rope which is penetrated by the rope. Still further, a wiper mounted on a swabbing rope of the swabbing lubricator is arranged in the protective outer cylinder, and the wiper is arranged between the upper part of the swabbing lubricator and the lower part of the wood head on the upper part of the protective outer cylinder. Furthermore, the wiper is mainly formed by rolling a waterproof film and a wear-resistant cloth pad in a multilayer mode in the circumferential direction in a stacked arrangement structure. A rubber plug sealing ring which is arranged on a swabbing rope of the swabbing lubricator in a penetrating mode is arranged in the protective outer barrel and arranged between the upper portion of the swabbing lubricator and the lower portion of the wiper.
As one preferable scheme, a flow collecting tray connected to a wellhead device is arranged at the bottom of the protection outer cylinder, the inner diameter of the flow collecting tray is larger than the outer diameter of the protection outer cylinder, and a lubricator through hole for enabling the swabbing lubricator to penetrate out of the flow collecting tray and be connected with the wellhead device is formed in the flow collecting tray. Furthermore, at least one flow guide hole is formed in the flow collection tray, a flow guide pipe is connected to the flow guide hole, and the area between the flow guide hole and the blowout prevention pipe through hole is used for arranging the protection outer cylinder. Still further, the bottom of protection urceolus is placed on the mass flow tray, form contact cooperation between protection urceolus and the mass flow tray.
Preferably, at least one hook is arranged on the upper part of the protection outer cylinder.
The utility model has the beneficial technical effects that:
1. the utility model covers a protective outer cylinder at the periphery of the swabbing lubricator, which does not affect the technical requirement of blowout prevention safety of a well mouth, and can effectively collect the outward-diffused liquid (including the outward-splashed liquid and the flowing liquid formed by scraping) generated in the swabbing operation so as to prevent the outward-diffused liquid from polluting the surrounding environment, and has good protection effect on the environment and strong practicability;
2. the utility model discloses a cooperation structure of protection urceolus and pumping lubricator and the wood head structure on the protection urceolus can form the liquid that the swab line took out from the swabbing lubricator and strike off, prevent that the swab line from taking liquid out the protection urceolus, and it is effectual to the protection of environment, this because the wood head will expand slightly after meeting water and the stringing hole hugs closely the swab line, and the contact friction of wood head and swab line makes the liquid of carrying effectively scraped and flows into in the protection urceolus; in addition, the wood head structure of the utility model has the characteristic of convenient assembly and disassembly on the swabbing rope and the protection outer cylinder;
3. the wiper arranged on the swabbing rope walking between the swabbing lubricator and the wood head can effectively scrape the liquid carried on the swabbing rope prior to the wood head, has good scraping effect on the liquid carried on the swabbing rope, can form wiping effect on the swabbing rope at the same time, and further improves the environmental protection effect; in addition, the wiper of the utility model has good wear resistance and water absorption, and good dewatering effect on the swabbing rope;
4. the rubber plug sealing ring arranged on the swabbing rope walking between the swabbing lubricator and the wiper can scrape off liquid carried on the swabbing rope prior to the wiper so as to reduce the dewatering task of the wiper and improve the dewatering effect on the swabbing rope, thereby being beneficial to ensuring the environmental protection effect;
5. the utility model discloses in the mass flow tray that protection urceolus bottom was arranged, can carry out effectual collection and the water conservancy diversion with the liquid that the protection urceolus was collected, it is not only effectual to the liquid water conservancy diversion that the protection urceolus was collected, and act as the base of protection urceolus moreover, can make the cooperation structure simplification between protection urceolus and the suction lubricator, in order to reduce the loading and unloading degree of difficulty on the wellhead assembly of the utility model;
6. the utility model discloses water conservancy diversion hole design structure on the mass flow tray and the cooperation structure between protection urceolus and the mass flow tray neither influence the installation of swabbing lubricator on the wellhead assembly, can carry out the sediment liquid separation effectively again with the liquid that the protection urceolus was collected, make the liquid that gets into in the mass flow tray collect according to appointed emission by effectively collecting, water conservancy diversion, prevent that the water conservancy diversion structure on the mass flow tray is blockked up;
7. the utility model discloses couple structure on the protection urceolus is favorable to the utility model discloses loading and unloading operation on the well head device.
Drawings
Fig. 1 is a schematic structural view of the present invention, in which it can be seen that a protective outer cylinder is covered outside a pumping lubricator, an annular space is provided between the protective outer cylinder and the pumping lubricator, and a wood head and a hook are provided on the upper part of the protective outer cylinder; a wiper and a rubber plug sealing ring are sequentially arranged between the wood seal head in the protective outer cylinder and the swabbing lubricator, and the rubber plug sealing ring, the wiper and the wood seal head are correspondingly provided with rope threading holes for the swabbing ropes to penetrate out; the bottom of the protective outer cylinder is provided with a flow collecting tray with the inner diameter larger than the outer diameter of the protective outer cylinder, the flow collecting tray is provided with a blowout prevention pipe perforation and a flow guide hole, the flow collecting tray in the area between the blowout prevention pipe perforation and the flow guide hole is matched with the bottom end of the protective outer cylinder, and the flow guide pipe is connected to the flow guide hole; and a sealing gasket is arranged on the periphery of the blowout prevention pipe perforation on the bottom surface of the flow collection tray.
Fig. 2 is a schematic structural view of the collecting tray in fig. 1 in a top view, and it can be seen that a lubricator perforation and a diversion hole are arranged on the collecting tray, a plurality of bolt holes are arranged on the periphery of the lubricator perforation, and a gasket is correspondingly arranged in the bolt hole area.
Fig. 3 is a schematic structural view of the wiper in fig. 1 in a top view, and it can be seen that the wiper is mainly formed by rolling a waterproof film and a wear-resistant cloth pad which are stacked together in a circumferential direction in multiple layers.
Fig. 4 is a schematic structural view of the wood end socket in fig. 1 in a top view, and it can be seen that the wood end socket is mainly formed by two-in-one wood sealing half body and two-in-one wood sealing half body, and a rope threading hole is formed between the two wood sealing half bodies.
The reference numbers in the figures mean: 1-a collecting tray; 11-tray bottom; 12-a tray wall; 13-bolt hole; 14-lubricator perforation; 15-diversion holes; 16-a flow guide pipe; 2-swabbing lubricator; 3-rubber plug sealing ring; 4, a wiper; 41-wear-resistant cloth pad; 42-a waterproof membrane; 5, protecting the outer cylinder; 51-wood end enclosure; 52, wood sealing half body one; 53-wood sealing half body two; 54-a stringing hole; 55-a connecting piece; 56, hooking; 6-sealing gasket.
Detailed Description
The utility model relates to a well head blowout preventer that oil gas well bore adopted specifically is a well head blowout preventer that oil gas well used when swabbing operation, it is right with a plurality of embodiments below the utility model discloses a main part technical content carries out the detailed description. In embodiment 1, the technical solution of the present invention is clearly and specifically explained with reference to the drawings of the specification, i.e., fig. 1, fig. 2, fig. 3 and fig. 4, and although the drawings are not separately drawn in other embodiments, the main structure of the embodiments can still refer to the drawings of embodiment 1.
It is expressly stated here that the drawings of the present invention are schematic, and unnecessary details have been simplified for the purpose of clarity in order to avoid obscuring the technical solutions that contribute to the prior art.
Example 1
Referring to fig. 1, 2, 3 and 4, the present invention comprises a pumping lubricator 2, a collecting tray 1 and a protective outer cylinder 5.
Wherein the swabbing lubricator 2 is a conventional swabbing lubricator or a hydraulic swabbing lubricator in a loose state. The bottom end of the swabbing lubricator 2 is connected with the top end of a paraffin removal gate of the wellhead device through a screw thread structure, and the swabbing lubricator 2 is vertically upward on the wellhead device.
The collecting tray 1 is a tank structure having an inner dimension larger than that of the protective outer cylinder 5, and the collecting tray 1 is a rectangular parallelepiped shape having a tray bottom 11 and a tray wall 12 erected around the tray bottom 11. The tray bottom 11 of the collecting tray 1 is provided with a lubricator through hole 14 which can enable the swabbing lubricator 2 to penetrate out and be connected with a wellhead device, a plurality of bolt holes 13 are uniformly formed in the edge part of the lubricator through hole 14 in the circumferential direction, the bolt holes 13 correspond to the bolt holes on the wax removal gate of the wellhead device, namely, the collecting tray 1 corresponds to the top thread position on the wax removal gate of the wellhead device through the lubricator through hole 14 and is locked on the wax removal gate of the wellhead device through bolts penetrating in the bolt holes 13 on the periphery of the lubricator through hole 14. In order to ensure the locking sealing performance of the collecting tray 1 on the paraffin removal gate of the wellhead device, an annular structure sealing gasket 6 which can enable all bolts to penetrate is arranged between the collecting tray 1 and the locking structure of the paraffin removal gate, the sealing gasket 6 is formed by adopting a rubber material, and the sealing gasket 6 also has a central hole through which a pumping blowout prevention pipe penetrates, and is provided with bolt holes corresponding to the bolt holes 13 on the collecting tray 1 one by one. In addition, a diversion hole 15 is arranged at one side position of the collecting tray 1, the diversion hole 15 is formed on the tray bottom 11 of the collecting tray 1, and the area of the tray bottom 11 between the diversion hole 15 and the lubricator through hole 14 is used for arranging the following protective outer barrel 5; a draft tube 16 is seamlessly connected to the draft hole 15, and the draft tube 16 is communicated with the sewage tank.
The protective outer cylinder 5 is a cylinder-shaped structure having an inner diameter larger than the maximum outer diameter of the pumping lubricator 2, and the height of the protective outer cylinder 5 is larger than the height of the pumping lubricator 2.
In the structure, the swabbing lubricator 2 and the collecting tray 1 are respectively connected to the corresponding positions of a paraffin removal gate of a wellhead device, at the moment, the bottom end of the protective outer cylinder 5 is placed on the collecting tray 1, the bottom end of the protective outer cylinder 5 is in contact fit with the tray bottom 11 of the collecting tray 1, and the swabbing lubricator 2 is surrounded by the protective outer cylinder 5. The upper part of the protection outer cylinder 5 is connected with a wood end socket 51 through a plurality of connecting pieces 55, such as rivets, and the wood end socket 51 seals the upper part of the protection outer cylinder 5; the wood sealing head 51 mainly comprises a wood sealing half body one 52 and a wood sealing half body two 53, wherein the wood sealing half body one 52 and the wood sealing half body two 53 are respectively connected to the upper part of the protective outer cylinder 5 through corresponding connecting pieces 55 in a detachable combined assembly structure, the combined diameter of the wood sealing half body one 52 and the wood sealing half body two 53 is just corresponding to the inner diameter of the upper part of the protective outer cylinder 5, a rope penetrating hole 54 capable of enabling a pumping rope on the pumping anti-spraying pipe 2 to penetrate through is formed between the wood sealing half body one 52 and the wood sealing half body two 53, the diameter of the rope penetrating hole 54 is slightly larger than the outer diameter of the pumping rope which is penetrated through, and is usually 1-2 mm larger, so that slight expansion generated after the wood sealing head 51 meets water is enough to enable the hole wall of the rope penetrating hole 54 to be tightly attached to the outer wall of the pumping rope which.
In addition, in order to improve the water removal effect of the pumping rope on the pumping lubricator 2, a rubber plug sealing ring 3 and a wiper 4 which are arranged on the pumping rope of the pumping lubricator 2 in a penetrating way are arranged in a protective outer cylinder 5, the rubber plug sealing ring 3 is arranged between the upper part of the pumping lubricator 2 and the lower part of the wiper 4, the wiper 4 is arranged between the upper part of the pumping lubricator 2 and the lower part of a wood end socket 51, therefore, the rubber plug sealing ring 3 and the wiper 4 are not fixedly connected, meanwhile, the rubber plug sealing ring 3 and the wiper 4 are not fixedly connected, the rubber plug sealing ring 3 and the wiper 4 are respectively sleeved on a longitudinal movable body on the pumping rope and move along with the walking of the pumping rope, but are finally limited by the wood end socket 51 in an upward moving process, and are finally limited by the pumping lubricator 2 in a downward moving process, so, when removing water to the swab line, form plug sealing washer 3 and scrape water for the first time, wiper 4 second grade is scraped water, wooden head 51 tertiary water of scraping to improve the dewatering effect of swab line. The wiper 4 is mainly formed by rolling a waterproof film 42 and a wear-resistant cloth pad 41 in a multilayer manner in the circumferential direction in a laminated arrangement structure, and is similar to a multilayer concentric structure. The rubber plug sealing ring 3 is of a conventional structure.
For the convenience of the loading and unloading operation of the present invention, a plurality of hooks 56, for example, two hooks, are uniformly provided on the periphery of the upper portion of the protection outer cylinder 5.
In the structure, the utility model discloses a plug sealing washer 3, wiper 4 and wooden head 51 form tertiary the water of scraping to the swabbing rope on swabbing lubricator 2, and the water that the protection urceolus 5 will strike off and the water liquid water conservancy diversion that splashes are collected, makes these liquid concentrate on the mass flow tray 1 to ooze to water conservancy diversion hole 15 through the gap between protection urceolus 5 and the mass flow tray 1, the honeycomb duct 16 through on the water conservancy diversion hole 15 gets into the bilge tank at last, thereby prevents the liquid of swabbing lubricator 2 department from diffusing outward.
In the structure, the best use effect is that the total length of the swabbing lubricator 2, the rubber plug sealing ring 3, the wiper 4 and the wood seal head 51 is less than 0.2-0.5 m of the length of the protective outer cylinder 5.
Example 2
The rest of the present embodiment is the same as embodiment 1, except that: the pumping rope in the protective outer cylinder is provided with less rubber plug sealing rings.
Example 3
The rest of the present embodiment is the same as embodiment 1, except that: wiper is omitted on the pumping rope in the protective outer cylinder.
Example 4
The rest of the present embodiment is the same as embodiment 1, except that: the swabbing rope in the protective outer cylinder is provided with a rubber plug sealing ring and a wiper.
Example 5
The rest of the present embodiment is the same as embodiment 1, except that: the collecting tray is of a circular structure.
Example 6
The rest of the present embodiment is the same as embodiment 1, except that: the flow collecting tray is of a flange structure corresponding to the outline of the bottom end of the protective outer barrel, the flow collecting tray is integrated at the bottom end of the protective outer barrel, and a flow guide hole and a flow guide pipe structure are formed at the bottom of the protective outer barrel.
The above examples are only for illustrating the present invention and are not to be construed as limiting the same. Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: the specific technical solutions in the above embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the present invention in its essence.
Claims (10)
1. A swabbing blowout preventer including a swabbing lubricator (2) connected to a wellhead, characterized in that: and a protective outer cylinder (5) which can prevent the liquid at the swabbing lubricator (2) from diffusing outwards and collecting is arranged outside the swabbing lubricator (2).
2. The swabbing blow out preventer of claim 1, wherein: the erection height of the protective outer cylinder (5) on the wellhead device is larger than the height of the pumping lubricator (2) in the enclosure, and the upper part of the protective outer cylinder (5) is connected with a wooden seal head (51) which can enable a pumping rope on the pumping lubricator (2) to penetrate out.
3. The swabbing blow out preventer of claim 2, wherein: the wood seal head (51) on the outer protection barrel (5) mainly comprises a wood seal half body I (52) and a wood seal half body II (53), the wood seal half body I (52) and the wood seal half body II (53) are respectively connected to the upper portion of the outer protection barrel (5) through corresponding connecting pieces (55) in a detachable combined assembly structure, a rope penetrating hole (54) enabling a pumping rope on the pumping blowout prevention pipe (2) to penetrate through is formed between the wood seal half body I (52) and the wood seal half body II (53), and the diameter of the rope penetrating hole (54) is 1-2 mm larger than the outer diameter of the pumping rope after penetrating.
4. The swabbing blow out preventer of claim 2 or 3, wherein: a wiper (4) which is arranged on a swabbing rope of the swabbing anti-spraying pipe (2) in a penetrating mode is arranged in the protective outer cylinder (5), and the wiper (4) is arranged between the upper portion of the swabbing anti-spraying pipe (2) and the lower portion of a wood end socket (51) at the upper portion of the protective outer cylinder (5).
5. The swabbing blow out preventer of claim 4, wherein: the wiper (4) is mainly formed by rolling a waterproof film (42) and a wear-resistant cloth pad (41) in a multilayer mode in the circumferential direction in a laminated arrangement structure.
6. The swabbing blow out preventer of claim 4, wherein: a rubber plug sealing ring (3) which is arranged on a swabbing rope of the swabbing blowout-preventing pipe (2) in a penetrating mode is arranged in the protective outer cylinder (5), and the rubber plug sealing ring (3) is arranged between the upper portion of the swabbing blowout-preventing pipe (2) and the lower portion of the wiper (4).
7. The swabbing blow out preventer of claim 1, wherein: the bottom of the protection outer cylinder (5) is provided with a flow collecting tray (1) connected to a wellhead device, the inner diameter of the flow collecting tray (1) is larger than the outer diameter of the protection outer cylinder (5), and the flow collecting tray (1) is provided with a blowout preventing pipe perforation (14) enabling the swabbing blowout preventing pipe (2) to penetrate out of and be connected with the wellhead device.
8. The swabbing blow out preventer of claim 7, wherein: the flow collecting tray (1) is provided with at least one flow guide hole (15), the flow guide hole (15) is connected with a flow guide pipe (16), and the area between the flow guide hole (15) and the blowout prevention pipe perforation (14) is used for arranging the protective outer cylinder (5).
9. The swabbing blow out preventer of claim 7 or 8, wherein: the bottom end of the protective outer cylinder (5) is placed on the flow collecting tray (1), and the protective outer cylinder (5) is in contact fit with the flow collecting tray (1).
10. The swabbing blow out preventer of claim 1 or 7, wherein: the upper part of the protection outer cylinder (5) is provided with at least one hook (56).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351607.9U CN210317233U (en) | 2019-08-20 | 2019-08-20 | Swabbing blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351607.9U CN210317233U (en) | 2019-08-20 | 2019-08-20 | Swabbing blowout preventer |
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| Publication Number | Publication Date |
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| CN210317233U true CN210317233U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921351607.9U Active CN210317233U (en) | 2019-08-20 | 2019-08-20 | Swabbing blowout preventer |
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| CN (1) | CN210317233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331956A (en) * | 2019-08-20 | 2019-10-15 | 中石化石油工程技术服务有限公司 | A kind of pumping blowout-preventing device |
-
2019
- 2019-08-20 CN CN201921351607.9U patent/CN210317233U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331956A (en) * | 2019-08-20 | 2019-10-15 | 中石化石油工程技术服务有限公司 | A kind of pumping blowout-preventing device |
| CN110331956B (en) * | 2019-08-20 | 2024-01-30 | 中石化石油工程技术服务有限公司 | Swabbing blowout preventer |
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