CN214273577U

CN214273577U - Temporary plugging body delivery device

Info

Publication number: CN214273577U
Application number: CN202120169721.0U
Authority: CN
Inventors: 田琳
Original assignee: Sany Petroleum Intelligent Equipment Co Ltd
Current assignee: Sany Petroleum Intelligent Equipment Co Ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-09-24
Anticipated expiration: 2031-01-19

Abstract

The utility model provides a temporary plugging body delivery device, which relates to the technical field of fracturing temporary plugging body delivery, and comprises a shell, a pushing mechanism and a mandrel, wherein a cavity is arranged in the shell, and the pushing mechanism is suitable for driving the mandrel to reciprocate in the cavity; the shell is provided with a discharge port which is communicated with the cavity, the mandrel is provided with a chamber, and the chamber is suitable for being communicated with the discharge port when the mandrel moves to a set position. Device is delivered to temporary closure body, realized the mechanical type of temporary closure body and discharged, to the temporary closure body of knot rope class complicated shape, do not need beeswax to encapsulate it and can realize discharging for the spheroid structure, deliver the device simply, the cost is lower.

Description

Temporary plugging body delivery device

Technical Field

The utility model relates to a fracturing temporary plugging body puts in technical field, particularly, relates to a temporary plugging body delivery device.

Background

Fracturing is a method of forming cracks in oil and gas layers by utilizing the action of water power in the process of oil extraction or gas production, and is also called hydraulic fracturing. Fracturing is the process of artificially cracking stratum, improving the flowing environment of oil in underground and increasing the yield of oil well, and plays an important role in improving the flowing condition of oil well bottom, slowing down the interlamination and improving the oil layer utilization condition.

During the fracturing process, the already fractured fractures need to be plugged for a short period of time in order to form new fractures. At present, temporary plugging bodies are mostly adopted for short-term plugging, so that the formed cracks do not influence the generation of new cracks, and the temporary plugging bodies are decomposed after a period of time and do not influence the collection of petroleum in the cracks.

However, the existing temporary plugging body ball throwing mode is mostly manually and quantitatively throwing to a high-pressure fracturing pipeline, only one-time collective throwing is realized, and the waste phenomenon is serious; and for the temporary plugging bodies with irregular shapes, the temporary plugging bodies need to be put one by one, so that a better plugging effect cannot be achieved, and the temporary plugging bodies cannot be put manually under a high-pressure condition.

SUMMERY OF THE UTILITY MODEL

The utility model solves the problems that the prior ball throwing mode of the temporary plugging body is mostly manually quantitative throwing to the high-pressure fracturing pipeline, only one-time collective throwing is realized, and the waste phenomenon is serious; and for the temporary plugging bodies with irregular shapes, the temporary plugging bodies need to be put one by one, so that a better plugging effect cannot be achieved, and the temporary plugging bodies cannot be put manually under a high-pressure condition.

In order to solve the problems, the utility model provides a temporary plugging body delivery device, which comprises a shell, a pushing mechanism and a mandrel, wherein a cavity is arranged in the shell, and the pushing mechanism is suitable for driving the mandrel to reciprocate in the cavity;

the shell is provided with a discharge port which is communicated with the cavity, the mandrel is provided with a chamber, and the chamber is suitable for being communicated with the discharge port when the mandrel moves to a set position.

Device is delivered to temporary closure body, realized the mechanical type of temporary closure body and discharged, to the temporary closure body of knot rope class complicated shape, do not need beeswax to encapsulate it and can realize discharging for the spheroid structure, deliver the device simply, the cost is lower.

Further, the cavity is provided with a plurality of cavities which are arranged at intervals linearly, and the plurality of cavities are suitable for being sequentially communicated with the discharge port when the mandrel moves.

Further, the chamber extends through the mandrel in a radial direction of the mandrel.

Further, the chamber is funnel-shaped.

Further, the shell comprises an end pipe, a four-way pipe and a first connecting pipe, wherein the four-way pipe comprises a first through opening, a second through opening, a third through opening and a fourth through opening;

one end of the end pipe is sealed, and the other end of the end pipe is connected with the first port;

one end of the first connecting pipe is connected with the second port, and the other end of the first connecting pipe is connected with the pushing mechanism.

Further, the third port and the fourth port are communicated with the chamber.

Further, the shell further comprises a three-way pipe and a sealing cover, the three-way pipe comprises a fifth port, a sixth port and a seventh port, the fifth port is connected with the first connecting pipe, the sixth port is connected with the pushing mechanism, and the seventh port is connected with the sealing cover.

Further, the casing still includes the second connecting pipe, the one end of second connecting pipe with the sixth opening is connected, pushing mechanism includes the plunger, the other end of second connecting pipe with the plunger sliding seal connects.

Furthermore, the pushing mechanism comprises a hydraulic oil cylinder and a plunger, and the free end of the plunger is fixedly connected with the mandrel.

Further, the pushing mechanism further comprises a hydraulic station, the hydraulic station is connected with the hydraulic oil cylinder, and the hydraulic station is suitable for providing power for the hydraulic oil cylinder.

Drawings

Fig. 1 is a schematic cross-sectional view of a temporary plugging body delivery device according to an embodiment of the present invention;

fig. 2 is a schematic bottom view of a temporary block delivery device according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a mandrel according to an embodiment of the present invention;

fig. 4 is a schematic top view of a mandrel according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of a housing according to an embodiment of the present invention;

FIG. 6 is an enlarged view of the position I in FIG. 5 according to the present invention;

FIG. 7 is an enlarged view of the position II in FIG. 5 according to the present invention;

fig. 8 is a schematic view of a pushing mechanism according to an embodiment of the present invention.

Description of reference numerals:

1-a shell; 11-end tube; 12-four-way pipe; 121-a first port; 122-a second port; 123-a third port; 124-fourth port; 13-a first connection pipe; 14-a tee pipe; 141-fifth port; 142-a sixth port; 143-seventh port; 15-sealing cover; 16-a second connecting tube; 17-a cavity; 2-a pushing mechanism; 21-a hydraulic oil cylinder; 22-a plunger; 23-a hydraulic station; 3-a mandrel; 31-chamber.

Detailed Description

At present, in fracturing construction operation in the oil exploitation industry, a degradable temporary plugging body is required to be put into a high-pressure fracturing pipeline, a large-particle-size temporary plugging body is put into a pipe sleeve to plug a perforation blasthole, liquid is shunted after temporary plugging, gradual reconstruction is realized layer by layer, the liquid flows to an unmodified area, and new cracks are formed by fracturing. The temporary plugging and fracturing technology realizes the increase of a reservoir transformation system, and plays an important role in quickly improving the hydrodynamic pressure of a reservoir and promoting the fracture to be complicated.

In the prior art, the temporary plugging body is mostly in a spherical structure (mostly called as a temporary plugging ball) or in a polyhedral spheroidal structure, and is easy to circulate in a pipeline. However, for some knotted temporary plugs, beeswax is mostly adopted to encapsulate knotted complex temporary plugs into spherical structures at present, and although the knotted complex temporary plugs are put in one by one, the beeswax needs to be crushed in the process of putting in and pressing seams, otherwise the decomposition effect of the temporary plugs is affected. However, it is difficult to break the beeswax by one hundred percent when the temporary plugging body is put. In addition, the pressure during the fracturing operation is an ultra-high pressure of about 140MPa, and at this time, manual feeding cannot be realized. Therefore, improvement in the placement of complicated temporary plugs such as ropes is required.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", and the like in the embodiments indicate terms of orientation, and are only used for simplifying the description of positional relationships based on the drawings of the specification, and do not represent that the elements, devices, and the like indicated in the description must be operated according to specific orientations and defined operations and methods, configurations, and such terms of orientation do not constitute limitations of the present invention. In the description of the present invention, "connected" includes both direct connections and indirect connections achieved through other components.

In addition, the terms "first" and "second" mentioned in the embodiments of the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

It should be understood that the direction of "X" in the drawings represents the right direction, and the position or positional relationship indicated by the term "X" is based on the position or positional relationship shown in the drawings of the specification, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of embodiments of the present application, the description of the term "some embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Throughout this specification, the schematic representations of the terms used above do not necessarily refer to the same implementation or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiment provides a temporary plugging body delivery device, which is shown in fig. 1 and fig. 2 and comprises a housing 1, a pushing mechanism 2 and a mandrel 3, wherein a cavity 17 is formed in the housing 1, and the pushing mechanism 2 is adapted to drive the mandrel 3 to reciprocate in the cavity 17; specifically, the mandrel 3 is in the shape of a cylindrical long rod extending along the X-axis direction, the cavity 17 is a cylindrical inner hole matched with the shape of the mandrel 3, and the mandrel 3 is in contact with the inner wall of the cavity 17;

the housing 1 is provided with a discharge opening communicating with the cavity 17, the spindle 3 is provided with a chamber 31, and the chamber 31 is adapted to communicate with the discharge opening when the spindle 3 is moved to a set position. Specifically, the pushing mechanism 2 pushes the mandrel 3 to move back and forth in the cavity 17 along the X axis, and when the chamber 31 of the mandrel 3 is communicated with the discharge port, the temporary plugging body in the chamber 31 can be discharged from the discharge port and enter the fracturing pipeline, and finally reaches the crack needing temporary plugging.

The temporary plugging body delivery device realizes mechanical discharge of the temporary plugging body, does not need beeswax to encapsulate the temporary plugging body into a spherical structure to discharge the temporary plugging body with a complex shape like a knot rope, and is simple in delivery device and low in cost.

It should be noted that, this embodiment only uses a straight line form reciprocating motion's dabber 3 and cavity 17 as an example, does not limit the utility model discloses a dabber 3 only is for sharp linear structure, arc or loop configuration, all can realize relative displacement and make cavity 31 and the communicating structure of discharge port in suitable position, all fall into the utility model discloses in the protection scope of injecing the temporary closure body delivery device.

Optionally, dabber 3 can be triangular prism, quadrangular prism and other irregular prism structures, and all can realize dabber 3 and do reciprocating motion in cavity 17, all fall into the utility model discloses in the protection scope to the dabber is injectd.

Referring to fig. 3 and 4, the chamber 31 has a plurality of chambers 31, a plurality of the chambers 31 are arranged at intervals, and the plurality of the chambers 31 are adapted to be sequentially communicated with the discharge port when the mandrel 3 moves. When the temporary plugging body delivery device works, the temporary plugging bodies are placed in the cavities 31, along with the pushing mechanism 2 pushes the core shaft 3 along the opposite direction of the X axis, the cavities 31 of the core shaft 3 gradually move towards the discharge port, and the cavities 31 are communicated with the discharge port in sequence, so that the temporary plugging bodies are sequentially delivered. Better, through the propelling movement distance and the propelling movement time of control push mechanism 2, control a plurality of cavities 31 and the communicating interval time of discharge port, realize a plurality of the interval emission in proper order of the temporary plugging body, interval time is controllable, puts in more accurately.

Preferably, the chamber 31 extends through the mandrel 3 in the radial direction of the mandrel 3, preventing the temporary blocking body from being located in the chamber 31, and the temporary blocking body is sucked into the chamber 31 due to the pressure difference, ensuring that the temporary blocking body can be separated in the chamber 31 and enter the discharge port.

Preferably, cavity 31 is hopper-shaped, promptly the first half of cavity 31 is the round platform type dead slot of back-off, the latter half of cavity 31 is less than the cylindrical dead slot of first half for the diameter, the temporary plugging body is stopped in first half region by the separation, prevents the temporary plugging body reaches because of the effect of gravity the bottom of cavity 31, dabber 3 for can not be right during 1 reciprocating motion of casing the temporary plugging body extrudees, ensures the structural integrity of the temporary plugging body also makes dabber 3 can move smoothly in cavity 17.

As shown in fig. 5 to 7, the housing 1 includes an end pipe 11, a four-way pipe 12 and a first connecting pipe 13, wherein the four-way pipe 12 includes a first port 121, a second port 122, a third port 123 and a fourth port 124; one end of the end pipe 11 is sealed, and the other end of the end pipe 11 is connected with the first through hole 121; one end of the first connecting pipe 13 is connected to the second port 122, and the other end of the first connecting pipe 13 is connected to the pushing mechanism 2.

Specifically, the end pipe 11 is a straight pipe with one closed end and the other open end, and the opening of the end pipe 11 is connected with the first opening 121 of the four-way pipe 12 in a sealing manner. The four-way pipe 12 is a cross four-way pipe, first port 121 with second port 122 link up straightly, third port 123 with fourth port 124 link up straightly, second port 122 with first connecting pipe 13 is located the one end sealing connection in the opposite direction of X axle, the end pipe 11 first port 121 second port 122 with first connecting pipe 13 link up straightly and form a part of cavity 17. Specifically, the four-way pipe 12 may be connected to a fracturing fluid pipeline, the third port 123 is adapted to be connected to an input end of the fracturing fluid pipeline, and the fracturing fluid in the fracturing fluid pipeline may enter a through channel formed by the third port 123 and the fourth port 124; the fourth port 124 is suitable for being connected with an output end of fracturing fluid, the fracturing fluid entering the through channel reenters the rear end of the fracturing fluid pipeline through the fourth port 124 and enters a subterranean zone to perform fracturing work, and at the moment, the fourth port 124 is the discharge port.

In the temporary plugging body delivery device of this embodiment, when the chamber 31 is communicated with the fourth port 124, the third port 123 and the fourth port 124 are communicated with the chamber 31. Under the effect of high pressure fracturing fluid in fracturing fluid pipeline, in cavity 31 the temporary plugging body can directly follow high pressure fracturing fluid and enter into the crack and temporarily block up, puts in more smoothly and accurately to can put in under the high pressure condition, it is safe convenient.

With reference to fig. 5 to 7, the housing 1 further includes a three-way pipe 14 and a sealing cover 15, the three-way pipe 14 includes a fifth port 141, a sixth port 142 and a seventh port 143, the fifth port 141 is connected to the first connecting pipe 13, the sixth port 142 is connected to the pushing mechanism 2, and the seventh port 143 is connected to the sealing cover 15.

Specifically, the fifth port 141 and the sixth port 142 are linearly communicated, the fifth port 141 and the first connecting pipe 13 are connected in a sealing manner along the positive direction of the X axis, and the sixth port 142 and the pushing mechanism 2 are connected through the second connecting pipe 16. The through channel between the fifth port 141 and the sixth port 142 is communicated with the straight through channel formed by the end pipe 11, the first port 121, the second port 122 and the first connecting pipe 13, and forms the cavity 17 together.

Preferably, the seventh port 143 is hermetically connected to the sealing lid 15, and the seventh port 143 is a point at which the temporary blocking body is put in, and the chamber 31 is controlled to communicate with the seventh port 143, so that the temporary blocking body is put in the chamber 31 from the seventh port 143; on the other hand, the seventh through hole 143 also serves as an observation through hole for observing whether the structure of the mandrel 3 is complete.

Referring to fig. 5 to 7, the housing 1 further includes a second connection tube 16, one end of the second connection tube 16 is connected to the sixth port 142, the pushing mechanism 2 includes a plunger 22, and the other end of the second connection tube 16 is connected to the plunger 22 in a sliding and sealing manner.

Specifically, one end of the second connecting pipe 16 in the opposite direction to the X axis is connected with the sixth port 142 of the tee 14 in a sealing manner, and the sixth port 142 is connected with the mandrel 3 in a sealing and sliding manner. One end of the second connecting pipe 16 along the positive direction of the X axis is connected with the plunger 22 of the pushing mechanism 2 in a sealing and sliding manner. Through the sealed sliding connection of the two parts, the isolation effect between the cavity 17 and the pushing mechanism 2 is improved, and the influence of the high-pressure environment in the cavity 17 on the pushing mechanism 2 is prevented.

Specifically, as shown in fig. 8, the pushing mechanism 2 includes a hydraulic cylinder 21 and a plunger 22, a free end of the plunger 22 is fixedly connected to the mandrel 3, the hydraulic cylinder 21 is adapted to drive the plunger 22 to reciprocate along an X-axis, and the plunger 22 drives the mandrel 3 to reciprocate.

Preferably, the pushing mechanism 2 further comprises a hydraulic station 23, the hydraulic station 23 is connected with the hydraulic oil cylinder 21, and the hydraulic station 23 is suitable for providing power for the hydraulic oil cylinder 21.

It should be noted that the sealing connection described in this embodiment includes flange connection, screw connection, and bolt connection, and a sealing gasket is disposed at the connection, specifically, the structure needs to be set. Specifically, in the temporary plugging body delivery device of this embodiment, the end pipe 11 is in threaded connection with the four-way pipe 12, the four-way pipe 12 is in threaded connection with the first connecting pipe 13, the first connecting pipe 13 is in threaded connection with the three-way pipe 14, the three-way pipe 14 is in threaded connection with the sealing cover 15, the three-way pipe 14 is in bolted connection with the second connecting pipe 16, and the second connecting pipe 16 is in bolted connection with the pushing mechanism 2.

Specifically, the temporary plugging body delivery device according to this embodiment is further provided with an auxiliary component, which includes an equipment base (not shown in the drawings), an oil cylinder base (not numbered in the drawings), a sealing flange (not numbered in the drawings), a high-pressure manifold (not numbered in the drawings), and the like, to ensure the overall operation of the device.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Without departing from the spirit and scope of the present disclosure, those skilled in the art can make various changes and modifications, which will fall into the scope of the present disclosure.

Claims

1. The temporary plugging body delivery device is characterized by comprising a shell (1), a pushing mechanism (2) and a mandrel (3), wherein a cavity (17) is formed in the shell (1), and the pushing mechanism (2) is suitable for driving the mandrel (3) to reciprocate in the cavity (17);

the shell (1) is provided with a discharge port which is communicated with the cavity (17), the mandrel (3) is provided with a chamber (31), and the chamber (31) is suitable for being communicated with the discharge port when the mandrel (3) moves to a set position.

2. The temporary block delivery device according to claim 1, wherein said chamber (31) is provided in plurality, a plurality of said chambers (31) are linearly spaced, and a plurality of said chambers (31) are adapted to be in sequential communication with said discharge port when said mandrel (3) is moved.

3. The temporary closure body delivery device according to claim 2, wherein the chamber (31) extends through the mandrel (3) in a radial direction of the mandrel (3).

4. The temporary closure body delivery device according to claim 3, wherein the chamber (31) is funnel-shaped.

5. The temporary block delivery device according to claim 3 or 4, wherein the housing (1) comprises an end pipe (11), a four-way pipe (12) and a first connecting pipe (13), the four-way pipe (12) comprises a first through opening (121), a second through opening (122), a third through opening (123) and a fourth through opening (124);

one end of the end pipe (11) is sealed, and the other end of the end pipe (11) is connected with the first through hole (121);

one end of the first connecting pipe (13) is connected with the second port (122), and the other end of the first connecting pipe (13) is connected with the pushing mechanism (2).

6. The temporary closure delivery device according to claim 5, wherein the third port (123) and the fourth port (124) are communicated with the chamber (31).

7. The temporary block delivery device according to claim 5, wherein the housing (1) further comprises a three-way pipe (14) and a sealing cover (15), the three-way pipe (14) comprises a fifth port (141), a sixth port (142) and a seventh port (143), the fifth port (141) is connected with the first connecting pipe (13), the sixth port (142) is connected with the pushing mechanism (2), and the seventh port (143) is connected with the sealing cover (15).

8. The temporary block delivery device according to claim 7, wherein the housing (1) further comprises a second connecting tube (16), one end of the second connecting tube (16) is connected with the sixth port (142), the pushing mechanism (2) comprises a plunger (22), and the other end of the second connecting tube (16) is connected with the plunger (22) in a sliding and sealing manner.

9. The temporary plugging body delivery device according to claim 1, wherein the pushing mechanism (2) comprises a hydraulic oil cylinder (21) and a plunger (22), and the free end of the plunger (22) is fixedly connected with the mandrel (3).

10. The temporary plugging body delivery device according to claim 9, wherein said pushing mechanism (2) further comprises a hydraulic station (23), said hydraulic station (23) is connected with said hydraulic ram (21), said hydraulic station (23) is adapted to provide power to said hydraulic ram (21).