CN212154716U - Double-pipe junction device for large-displacement well cementation operation - Google Patents
Double-pipe junction device for large-displacement well cementation operation Download PDFInfo
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- CN212154716U CN212154716U CN202020294899.3U CN202020294899U CN212154716U CN 212154716 U CN212154716 U CN 212154716U CN 202020294899 U CN202020294899 U CN 202020294899U CN 212154716 U CN212154716 U CN 212154716U
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- union
- cast steel
- pair
- manifold
- double
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- 238000006073 displacement reaction Methods 0.000 title claims description 28
- 239000004568 cement Substances 0.000 claims abstract description 43
- 229910001208 Crucible steel Inorganic materials 0.000 claims abstract description 37
- 239000002002 slurry Substances 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- 230000009977 dual effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 21
- 239000012530 fluid Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a big discharge capacity well cementation operation double-pipe union device, which comprises a pair of cast steel three-way, a pair of cast steel three-way universal union is connected and combined to form a five-way union device, and a pair of cast steel three-way satisfies the pressure bearing capacity of 105 MPa; wherein, the input ends of the pair of cast steel tees are male buckles connected with the union; the output end is a female buckle connected with the union; the union is connected with a male buckle of one cast steel tee joint, and the union is connected with a female buckle of the other cast steel tee joint; in addition, a pair of the cast steel tee joints can be combined into a five-way connecting device through a union connecting plug valve, and the plug valve meets the pressure bearing capacity of 105 MPa. The utility model discloses make every well cementation operation cement car all possess the tamponade, annotate and replace the function, the impartial discharge capacity of two manifolds is annotated to the cementing head both sides and is replaced to ensure construction safety.
Description
Technical Field
The utility model belongs to the technical field of the oil field well cementation, especially, relate to a double-barrelled confluence of big discharge well cementation operation and device.
Background
At present, the ground process of oil field cementing operation comprises the following steps: the well cementing manifold system consists of a well head cementing head, a drill floor manifold, a ground grouting manifold, equipment and the like. During conventional well cementation construction operation, the cement head is only required to be connected with an injection replacement manifold at the junction of a plug and a grouting pipe, and a series of operation procedures such as injection of pad fluid, cement slurry, plug fluid, post fluid and replacement slurry into a well can be completed by changing different directions of a valve group of the cement head manifold. And the bypass of the cementing head is only a spare injection port and does not have the function of pressing a rubber plug, and the bypass is blocked by a union plug for normal displacement well cementation, as shown in the attached figure 1 of the specification.
At present, a conventional drill floor manifold comprises a primary instrument of a parameter instrument, a 3 'x 2' tee joint, a 3 'plug valve, a 2' plug valve, a 3 'x 2' and a 2 'x 3' variable-diameter union nipple, a cement head connecting pipeline, a slurry pump connecting pipeline, a ground manifold connecting pipeline, a high-pressure movable elbow and other components, and conventional displacement well cementation can be completed by only one group of manifolds, as shown in figure 2.
Less than 3m3The normal displacement well cementation construction of the/min only needs a plug pressing and replacement manifold interface of a cement head to be connected with a drill floor manifold and a ground manifold to form a manifold system, and the construction operation requirements of each cement truck for respectively or simultaneously injecting well cementation pre-positioned fluid, cement slurry, plug pressing fluid, post-positioned fluid and replacement slurry into the well cementation cement head can be met through different directions of valves of the manifold system. When large-size well cementation operation is carried out, in order to improve the well cementation displacement efficiency, 3.5-7 m is needed3The construction method for the large displacement of the pipe network system in the/min mode meets the requirement of displacement, and the traffic capacity of the conventional single manifold system cannot meet the requirement of the large displacement construction. Therefore, the cementing head 2' bypass union plug is required to be removed, and then another casing manifold system is connected, and the double casing manifold system meets the requirement of large-displacement construction operation, as shown in fig. 3 and 4.
The double-pipe gathering large-displacement well cementation replacement operation needs a plurality of cement trucks to jointly complete operations of injecting the front liquid, injecting the cement slurry and injecting the rear liquid. Because the two injection replacement manifolds do not have the same function, the connected second manifold does not have the function of pressing the rubber plug. And large-displacement multi-equipment combined construction has the defects of crowded site, messy manifold and noisy noise, and when the coordination of construction organization is improper, the communication command is not smooth or the second operator on the manifold without the function of pressing the rubber plug mistakenly takes the pressing signal as the post-injection liquid operation, the manifold system is pressed high pressure, and even the manifold is pressed and exploded. The pumping equipment connected to the double manifolds on the two sides of the cement head pumps the cement head with unequal pumping pressures and discharge capacities, and liquid flow generates asymmetric impact and eddy with strong erosion energy in a cavity of the cement head, so that slurry of the low-discharge manifold is difficult to replace, erosion abrasion and strong vibration of the cement head are caused, the cement head and the weak part of the manifold system are easy to break, and serious construction and casualty accidents occur.
Therefore, in view of these problems, it is important to provide a double manifold coupling device for large displacement cementing work, which has a function of plugging and replacing each cementing truck, and in which two manifolds replace the cementing head at equal displacement, thereby ensuring construction safety.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides one kind and makes every well cementation operation cement car all possess the tamponade, annotate and replace the function, and the impartial discharge capacity of two manifolds is annotated to the cementing head both sides and is replaced to ensure that the double-barrelled confluence of the safe big discharge capacity well cementation operation of construction is connected the device.
The utility model provides a its technical problem take following technical scheme to realize:
a double-pipe junction device for large-displacement well cementation operation comprises a pair of cast steel tee joints, wherein the pair of cast steel tee joints are connected and combined into a five-way junction device, and the pair of cast steel tee joints meet the pressure bearing capacity of 105 MPa;
wherein, the input ends of the pair of cast steel tees are male buckles connected with the union; the output end is a female buckle connected with the union; the union is connected with a male buckle of one cast steel tee joint, and the union is connected with a female buckle of the other cast steel tee joint.
Furthermore, a pair of the cast steel tee joints can be connected with plug valves through union to form a five-way connection device, and the plug valves meet the pressure bearing capacity of 105 MPa.
Furthermore, the output ends of the pair of cast steel tee joints are connected to a grouting pipeline through a parameter instrument, and the grouting pipeline is connected with a cement head.
Furthermore, the input ends of the pair of cast steel tee joints are respectively connected with the tee joints, and the other two ends of the tee joints are respectively connected with a grouting manifold and a slurry replacement pump.
Furthermore, the corners of the liquid flow passages of the pair of cast steel tee joints are cast and processed into arc streamlines, so that the damage to the device caused by liquid flow cross-linking is reduced.
Further, the maximum outer edge width of the two injection manifold connected by the device is smaller than the width between the inner edges of the drill pipe boxes on the left side and the right side of the drill floor.
The utility model has the advantages that:
the utility model discloses a double-barrelled confluence is connected, makes every well cementation operation cement car all possess the tamponade, annotate and replace the function, and the impartial discharge capacity of two manifolds is annotated to the cementing head both sides and is replaced to ensure construction safety, avoid construction and casualties occurence of failure.
Drawings
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a single-pipe junction cement head provided in the background art of the present invention;
fig. 2 is a schematic structural diagram of a drill floor manifold provided in the background of the present invention;
fig. 3 is a schematic structural diagram of a cementing head with double pipe junctions provided in the background of the present invention;
fig. 4 is a schematic structural diagram of a drill floor dual manifold provided in the background of the present invention;
fig. 5 is a schematic structural diagram of one of the two pipes that are merged according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of one of the two pipes that are merged according to the embodiment of the present invention;
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be described in detail below by way of example, but all the descriptions are only for illustrative purpose and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The present invention will be described in detail with reference to fig. 1 to 6.
During conventional well cementation construction operation, the cement head is only required to be connected with an injection replacement manifold at the junction of a plug and a grouting pipe, and a series of operation procedures such as injection of pad fluid, cement slurry, plug fluid, post fluid and replacement slurry into a well can be completed by changing different directions of a valve group of the cement head manifold. And the bypass of the cement head is only a spare injection port and does not have the function of pressing a rubber plug, and the bypass is blocked by a union plug for normal displacement well cementation, as shown in the attached figure 1.
Specifically, the conventional existing product cement head used by the cement head comprises a body 1, a rubber plug stop pin 2, a rubber plug accommodating cavity 3, a plug pressing liquid cavity 4, a cement head cover 5, a grouting manifold 6, a 2' bypass union plug 7, a rubber plug positioning rod 8 and the like, and during the conventional well cementation construction operation, the cement head only needs to be connected with a grouting replacement manifold at a plug pressing and grouting manifold junction, and a series of operation procedures such as injection of preflush, cement paste, plug pressing liquid, postpositive liquid, replacement of grout and the like can be completed by changing different trends of a cement head manifold valve group. And the bypass of the cement head is only a spare injection replacing interface and does not have the function of pressing a rubber plug, and the bypass is blocked by an union plug for normal displacement well cementation. See fig. 1.
At present, a conventional drill floor manifold comprises a parameter instrument primary instrument 9, a 3 '. times.2' three-way 10, a 3 'plug valve 11, a 2' plug valve 12, a 3 'connecting union 13, a 2' connecting union 14, a 3 '. times.2', a 2 '. times.3' variable diameter union short joint 15, 16, a cement head connecting pipeline 17, a slurry pump connecting pipeline 27, a ground manifold connecting pipeline 18, a high-pressure movable elbow and other components, and the conventional displacement well cementation can be completed by only one group of manifolds, as shown in figure 2.
Less than 3m3The normal displacement well cementation construction of the/min only needs a plug pressing and replacement manifold interface of a cement head to be connected with a drill floor manifold and a ground manifold to form a manifold system, and the construction operation requirements of each cement truck for respectively or simultaneously injecting well cementation pre-positioned fluid, cement slurry, plug pressing fluid, post-positioned fluid and replacement slurry into the well cementation cement head can be met through different directions of valves of the manifold system. When large-size well cementation operation is carried out, in order to improve the well cementation displacement efficiency, 3.5-7 m is needed3The construction method for large displacement of/min meets the requirement of injection, the traffic capacity of the conventional single manifold system cannot meet the requirement of large displacement construction, so that a cement head 2' bypass union plug needs to be detached, another set of manifold system needs to be connected, and the construction method for large displacement can meet the requirement of double sets of manifolds, as shown in figures 3 and 4.
The double-pipe junction device for the large discharge cementing operation provided by the embodiment comprises a pair of cast steel tees 19, as shown in fig. 5, the pair of cast steel tees 19 are connected and combined by a union 20 to form a five-way junction device, and the pair of cast steel tees 19 meet the pressure bearing capacity of 105 MPa; wherein, the input ends of the pair of cast steel tees 19 are male buckles connected with the union; the output end is a female buckle connected with the union; the union is connected with a male buckle of one cast steel tee joint, and the union is connected with a female buckle of the other cast steel tee joint.
Furthermore, in this embodiment, it is also considered that a pair of the cast steel tees 19 can be combined into a five-way union device by connecting plug valves 21 through a union 20, and the plug valves meet a pressure bearing capacity of 105MPa, as shown in fig. 6.
It should be noted that the output ends of the pair of cast steel tees 19 are connected to a grouting pipeline 22 through a parameter instrument 26, and the grouting pipeline 22 is connected with a cement head; the input ends of the pair of cast steel tee joints 19 are connected with a tee joint 23, and the other two ends of the tee joint 23 are respectively connected with a grouting manifold 24 and a slurry replacing pump 25.
In addition, the corners of the liquid flow passages of the pair of cast steel tees 19 are cast and processed into arc streamlines, so that the damage of liquid flow to the device is reduced.
Furthermore, the maximum width of the device after assembly is smaller than the width between the inner edges of the drill pipe boxes on the left side and the right side of the drill floor, so that the two manifolds in the limited space of the drill floor can be conveniently assembled and connected.
The union 20 of the coupling device is an existing product, such as 1502 union standard parts, and the specific structure is not described in detail herein, but for the reasons stated above, the repeated reproduction of the union by a person skilled in the art is not affected.
For example, in this embodiment, the parallel connection device of this embodiment combines two independent injection replacement manifolds, so that the operation equipment on each manifold can have the functions of injecting cementing pad fluid, cement slurry, plugging fluid, post fluid and replacing slurry, thereby avoiding high pressure build-up or burst accidents of the manifold due to unclear command transmission, misoperation, and the like; well cementing liquids with different properties and purposes can be injected into the cement head in a balanced manner, so that the problems that the pressure and the discharge capacity are greatly different, two manifolds collide with each other to interfere with each other, and the injection and replacement operations of low-pump-pressure and low-discharge-capacity manifold equipment are influenced are avoided; the phenomenon that two streams of liquid with unequal pressure and flow velocity generate high-speed vortex in the cement head and generate erosion and abrasion on the cement head is avoided.
The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (6)
1. The utility model provides a big discharge capacity well cementation operation double-pipe union is device which characterized in that: the device comprises a pair of cast steel tees, wherein the pair of cast steel tees are connected and combined into a five-way connection device through union joints, and the pair of cast steel tees meet the pressure bearing capacity of 105 MPa;
wherein, the input ends of the pair of cast steel tees are male buckles connected with the union; the output end is a female buckle connected with the union; the union is connected with a male buckle of one cast steel tee joint, and the union is connected with a female buckle of the other cast steel tee joint.
2. The double manifold combining device for the large displacement cementing operation according to claim 1, characterized in that: the pair of cast steel tee joints can be combined into a five-way connecting device through a union connecting plug valve, and the plug valve meets the pressure bearing capacity of 105 MPa.
3. The double manifold combining device for the large displacement cementing operation according to claim 1, characterized in that: and the output ends of the cast steel tee joints are connected to a grouting pipeline through a parameter instrument, and the grouting pipeline is connected with a cement head.
4. A high displacement cementing operation dual manifold union device as claimed in claim 1 or 3, wherein: the input ends of the pair of cast steel tee joints are respectively connected with the tee joints, and the other two ends of the tee joints are respectively connected with a grouting manifold and a slurry replacement pump.
5. The double manifold combining device for the large displacement cementing operation according to claim 1, characterized in that: the corners of the liquid flow passages of the pair of cast steel tee joints are cast and processed into arc streamlines, so that the damage of liquid flow to the connecting device is reduced.
6. The double manifold combining device for the large displacement cementing operation according to claim 1, characterized in that: the maximum outer edge width of the two injection manifold connected by the device is smaller than the width between the inner edges of the drill pipe boxes on the left side and the right side of the drill floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020294899.3U CN212154716U (en) | 2020-03-11 | 2020-03-11 | Double-pipe junction device for large-displacement well cementation operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020294899.3U CN212154716U (en) | 2020-03-11 | 2020-03-11 | Double-pipe junction device for large-displacement well cementation operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212154716U true CN212154716U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020294899.3U Expired - Fee Related CN212154716U (en) | 2020-03-11 | 2020-03-11 | Double-pipe junction device for large-displacement well cementation operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212154716U (en) |
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2020
- 2020-03-11 CN CN202020294899.3U patent/CN212154716U/en not_active Expired - Fee Related
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Granted publication date: 20201215 |