Tight oil horizontal well staged oil extraction device

Abstract

The utility model belongs to the technical field of oil extraction devices, and particularly relates to a tight oil horizontal well staged oil extraction device which comprises a well body and a sampling device, the side wall of the well body is communicated with a main pipe, and the surface of the well body is communicated with an auxiliary pipe. A sampling device is arranged on the surface of the auxiliary pipe and comprises a placement ring, the placement ring is located under the auxiliary pipe, the inner surface of the placement ring is rotationally connected with a rotating block, the surface of the rotating block is fixedly connected with four fixing rings, sampling bottles are inserted into the inner walls of the fixing rings, and a blocking device is arranged on the inner wall of the auxiliary pipe and comprises a moving block; the surface of the moving block is slidably connected with the inner wall of the auxiliary pipe, and a baffle disc is fixedly connected to the side wall of the moving block and inserted into the inner wall of the auxiliary pipe; by arranging the whole device, tight oil can be conveniently sampled, meanwhile, multiple times of sampling can be conveniently carried out, the time for taking the sampling bottle is shortened, and meanwhile tight oil in different time periods can be conveniently sampled.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production devices, in particular to a staged oil production device for a tight oil horizontal well. Background Art

[0002] Oil production equipment is a system of equipment used to extract oil from underground oil and gas reservoirs. It comes in a variety of types and functions, suited to different geological and production conditions. The wellhead assembly is a key component of the oil production system, primarily consisting of the Christmas tree, tubing head, casing head, and related accessories. These devices are used for suspension, support, control, and regulation of oil production operations.

[0003] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: when it is necessary to collect tight oil, the raw liquid needs to be sampled and tested, and a short tube is generally connected to the wellhead at one end. Since most sampling containers are used separately, when it is necessary to sample the same wellhead at different time periods, it is easy to encounter problems such as the inconvenience of taking and storing the containers, which affects the sampling. Therefore, in order to solve the above problems, a staged oil production device for horizontal wells of tight oil is proposed. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0005] The technical solution adopted by the present invention to solve its technical problems is: the utility model describes a staged oil production device for a tight oil horizontal well, comprising a well body and a sampling device, wherein the side wall of the well body is connected to a main pipe, and the surface of the well body is connected to a secondary pipe; a sampling device is provided on the surface of the secondary pipe, and the sampling device comprises a placing ring, which is located directly below the secondary pipe, and the inner surface of the placing ring is rotatably connected to a rotating block, and the surface of the rotating block is fixedly connected to four fixing rings, and a sampling bottle is inserted into the inner wall of the fixing ring, and the sampling bottle is located directly below the secondary pipe. The rotating block is pushed to rotate on the inner surface of the placing ring, and the rotating block drives the fixing ring and the sampling bottle to rotate. After the other sampling bottles are attached to the secondary pipe, the secondary pipe continues to be opened. By arranging the placing ring, the rotating block, the fixing ring and the sampling bottle, tight oil can be conveniently sampled.

[0006] Preferably, the upper surface of the placement ring is fixedly connected to two connecting blocks, and the two connecting blocks and the inner wall of the auxiliary tube are threadedly connected with positioning pins. When the positioning pins are rotated to the inner walls of the two connecting blocks and the auxiliary tube, the positioning pins and the connecting blocks can limit the position of the placement ring on the surface of the auxiliary tube.

[0007] Preferably, a rotating hole is opened on the surface of the rotating block, and the inner wall of the rotating hole of the rotating block is rotatably connected to the surface of the placement ring. When the rotating block rotates, the rotating block rotates on the surface of the placement ring through the rotating hole. The opening of the rotating hole can facilitate the rotation of the rotating block on the surface of the placement ring.

[0008] Preferably, the inner wall of the sampling bottle is provided with a rubber stopper, and the inner walls of the rotating block and the placement ring are threadedly connected with a fixing pin. After the rotating block is rotated to a suitable angle, the fixing pin is rotated to the inner walls of the rotating block and the placement ring, and the fixing pin can limit the angle of the rotating block.

[0009] Preferably, a plurality of fixing holes are provided on the surface of the rotating block, and the inner wall of the fixing hole of the rotating block is threadedly connected to the surface of the fixing pin. When the fixing pin rotates, the fixing pin will rotate to the inner wall of the fixing hole of the rotating block, and the fixing hole can accommodate the fixing pin.

[0010] Preferably, the inner wall of the auxiliary pipe is provided with a blocking device, and the blocking device includes a moving block, the surface of the moving block is slidably connected to the inner wall of the auxiliary pipe, the side wall of the moving block is fixedly connected with a baffle, and the baffle is inserted into the inner wall of the auxiliary pipe, and the upper and lower ends of the baffle are fixedly connected with a sealing disk, and the baffle is inserted into the middle of the channel of the auxiliary pipe. When the baffle moves, it will drive the sealing disk to move. By arranging the moving block, the baffle and the sealing disk, dense oil can be blocked and the possibility of dense oil leakage can be reduced.

[0011] Preferably, the side wall of the auxiliary tube is fixedly connected to the position of the limiting block near the moving block, and the inner walls of the moving block and the limiting block are threadedly connected to the limiting pin. After the moving block moves to the appropriate position, the limiting pin is rotated to the inner walls of the moving block and the limiting block, and the positioning pin and the limiting block can limit the position of the moving block.

[0012] The utility model is beneficial in that:

[0013] 1. According to the utility model, when it is necessary to sample the auxiliary pipe, the placing ring is pushed to allow the placing ring to drive the connecting block to move, and the connecting block is fitted into the auxiliary pipe, and then the positioning pin is rotated to the two connecting blocks and the inner wall of the auxiliary pipe, and then the fixing ring is pushed to allow the fixing ring to drive the rotating block to rotate, and the rotating block rotates on the inner wall of the rotating hole of the placing ring, and the fixing ring drives the sampling bottle to rotate. After the sampling bottle is aligned with the outlet of the auxiliary pipe, the fixing pin is rotated to the inner wall of the fixing hole of the rotating block and the inner wall of the placing ring. After the sampling bottle is collected, the fixing pin is rotated out, and the fixing ring is pushed again to allow the fixing ring to drive other sampling bottles to the opening of the auxiliary pipe, and at the same time, the rubber stopper is inserted into the sampling bottle where the sampling is completed, and sampling is continued after a period of time. By setting up the entire device, it is convenient to sample dense oil, and it is also convenient to sample multiple times, reducing the time to take the sampling bottle, and conveniently sampling dense oil in different time periods.

[0014] 2. When sampling is required, the utility model rotates the limit pin out from the limit block and the moving block, and then pulls the moving block to drive the baffle plate and the sealing plate to move. After the baffle plate moves, the dense oil will flow out from the auxiliary pipe. After the sampling is completed, push the moving block to drive the baffle plate and the sealing plate to move to their original position, and then rotate the limit pin to the inner wall of the moving block and the limit block again. By setting up the entire device, the auxiliary pipe can be conveniently blocked to reduce the possibility of leakage of dense oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a well body in a staged oil production device for a horizontal tight oil well;

[0017] Figure 2 A staged oil production device for tight oil horizontal wells Figure 1 Schematic diagram of the structure at A;

[0018] Figure 3 This is a schematic diagram of the explosion structure of a sampling device in a staged oil production device for a horizontal tight oil well;

[0019] Figure 4 This is a schematic side view of the well body structure of a staged oil production device for a horizontal tight oil well;

[0020] Figure 5 A staged oil production device for tight oil horizontal wells Figure 4 Schematic diagram of the structure at point B.

[0021] In the figure: 1. Well body; 2. Main pipe; 3. Auxiliary pipe; 4. Sampling device; 41. Placement ring; 42. Rotating block; 43. Fixing ring; 44. Sampling bottle; 45. Connecting block; 46. Positioning pin; 47. Rotating hole; 48. Fixing pin; 49. Fixing hole; 5. Blocking device; 51. Moving block; 52. Baffle plate; 53. Sealing plate; 54. Limit block; 55. Limit pin. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-5 As shown, a staged oil production device for a tight oil horizontal well includes a well body 1 and a sampling device 4. The side wall of the well body 1 is connected to a main pipe 2, and the surface of the well body 1 is connected to a secondary pipe 3; the surface of the secondary pipe 3 is provided with a sampling device 4, and the sampling device 4 includes a placement ring 41, the placement ring 41 is located directly below the secondary pipe 3, the inner surface of the placement ring 41 is rotatably connected to a rotating block 42, the surface of the rotating block 42 is fixedly connected to four fixing rings 43, and the inner wall of the fixing ring 43 is inserted with a sampling bottle 44, the sampling bottle 44 is located just below the auxiliary pipe 3; during operation, after the sampling bottle 44 is attached to the auxiliary pipe 3, the auxiliary pipe 3 is opened and the dense oil will enter the sampling bottle 44. After the sampling is completed, the rotating block 42 is pushed to rotate on the inner surface of the placement ring 41. The rotating block 42 drives the fixed ring 43 and the sampling bottle 44 to rotate. After other sampling bottles 44 are attached to the auxiliary pipe 3, the auxiliary pipe 3 is continued to be opened. By setting the placement ring 41, the rotating block 42, the fixed ring 43 and the sampling bottle 44, it is convenient to sample the dense oil.

[0024] Two connecting blocks 45 are fixedly connected to the upper surface of the placement ring 41, and the two connecting blocks 45 and the inner wall of the auxiliary pipe 3 are threadedly connected with a positioning pin 46; when working, the placement ring 41 will drive the connecting block 45 to move, and the connecting block 45 will fit the auxiliary pipe 3, and then the positioning pin 46 will be rotated to the inner wall of the two connecting blocks 45 and the auxiliary pipe 3. The positioning pin 46 and the connecting block 45 can limit the position of the placement ring 41 on the surface of the auxiliary pipe 3.

[0025] A rotating hole 47 is provided on the surface of the rotating block 42, and the inner wall of the rotating hole 47 of the rotating block 42 is rotatably connected to the surface of the placement ring 41; when working, the rotating block 42 rotates on the surface of the placement ring 41 through the rotating hole 47, and the opening of the rotating hole 47 can facilitate the rotation of the rotating block 42 on the surface of the placement ring 41.

[0026] The inner wall of the sampling bottle 44 is provided with a rubber stopper, and the inner walls of the rotating block 42 and the placement ring 41 are threadedly connected with a fixing pin 48; when working, the fixing pin 48 is rotated to the inner walls of the rotating block 42 and the placement ring 41, and the fixing pin 48 can limit the angle of the rotating block 42.

[0027] A plurality of fixing holes 49 are provided on the surface of the rotating block 42 , and the inner walls of the fixing holes 49 of the rotating block 42 are threadedly connected to the surface of the fixing pin 48 ; during operation, the fixing pin 48 will rotate to the inner walls of the fixing holes 49 of the rotating block 42 , and the opening of the fixing holes 49 can accommodate the fixing pin 48 .

[0028] The inner wall of the auxiliary pipe 3 is provided with a blocking device 5, and the blocking device 5 includes a moving block 51. The surface of the moving block 51 is slidably connected to the inner wall of the auxiliary pipe 3, and the side wall of the moving block 51 is fixedly connected with a baffle 52. The baffle 52 is inserted into the inner wall of the auxiliary pipe 3, and the upper and lower ends of the baffle 52 are fixedly connected with a sealing disk 53; when working, the moving block 51 is pushed to allow the moving block 51 to drive the baffle 52 to slide, and the baffle 52 is inserted into the middle of the channel of the auxiliary pipe 3. When the baffle 52 moves, it will drive the sealing disk 53 to move. By arranging the moving block 51, the baffle 52 and the sealing disk 53, dense oil can be blocked and the possibility of dense oil leakage can be reduced.

[0029] The side wall of the auxiliary pipe 3 is fixedly connected to the limiting block 54 near the moving block 51, and the inner walls of the moving block 51 and the limiting block 54 are threadedly connected to the limiting pin 55; when working, the limiting pin 55 is rotated to the inner walls of the moving block 51 and the limiting block 54, and the positioning pin 46 and the limiting block 54 can limit the position of the moving block 51.

[0030] Working principle: when it is necessary to sample the auxiliary tube 3, push the placement ring 41 to allow the placement ring 41 to drive the connecting block 45 to move, and the connecting block 45 fits the auxiliary tube 3, and then rotate the positioning pin 46 to the two connecting blocks 45 and the inner wall of the auxiliary tube 3, and then push the fixing ring 43 to allow the fixing ring 43 to drive the rotating block 42 to rotate, and the rotating block 42 rotates on the inner wall of the rotating hole 47 of the placement ring 41, and the fixing ring 43 drives the sampling bottle 44 to rotate. After the sampling bottle 44 is aligned with the outlet of the auxiliary tube 3, the fixing pin 48 is rotated to the inner wall of the fixing hole 49 of the rotating block 42 and the inner wall of the placement ring 41. After the sampling bottle 44 has been collected, the fixing pin 48 is rotated out, and the fixing ring 43 is pushed again to allow the fixing ring 43 to drive other sampling bottles 44 to the opening of the auxiliary tube 3, and at the same time, the rubber stopper is inserted into the sampling bottle 44 after sampling. , and continue sampling after a period of time. By setting up the entire device, it is convenient to sample dense oil, and it is also convenient to sample multiple times, reducing the time for taking the sampling bottle 44, and facilitating the sampling of dense oil in different time periods; when sampling is needed, the limit pin 55 is rotated out from the limit block 54 and the moving block 51, and then the moving block 51 is pulled to allow the moving block 51 to drive the baffle 52 and the sealing disk 53 to move. After the baffle 52 moves, the dense oil will flow out from the auxiliary pipe 3. After the sampling is completed, the moving block 51 is pushed to allow the moving block 51 to drive the baffle 52 and the sealing disk 53 to move to their original position, and then the limit pin 55 is rotated to the inner wall of the moving block 51 and the limit block 54. By setting up the entire device, it is convenient to seal the auxiliary pipe 3 and reduce the possibility of leakage of dense oil.

[0031] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A staged oil production device for a tight oil horizontal well, comprising a well body (1) and a sampling device (4), wherein the side wall of the well body (1) is connected to a main pipe (2), and the surface of the well body (1) is connected to a secondary pipe (3); characterized in that: The surface of the auxiliary tube (3) is provided with a sampling device (4), and the sampling device (4) comprises a placement ring (41), and the placement ring (41) is located directly below the auxiliary tube (3). The inner surface of the placement ring (41) is rotatably connected to a rotating block (42), and the surface of the rotating block (42) is fixedly connected to four fixing rings (43). The inner wall of the fixing ring (43) is provided with a sampling bottle (44), and the sampling bottle (44) is located directly below the auxiliary tube (3).

2. The staged oil production device for a tight oil horizontal well according to claim 1, characterized in that: Two connecting blocks (45) are fixedly connected to the upper surface of the placement ring (41), and positioning pins (46) are threadedly connected between the two connecting blocks (45) and the inner wall of the auxiliary pipe (3).

3. The staged oil production device for a tight oil horizontal well according to claim 1, characterized in that: A rotating hole (47) is provided on the surface of the rotating block (42), and the inner wall of the rotating hole (47) of the rotating block (42) is rotatably connected to the surface of the placement ring (41).

4. The staged oil production device for a tight oil horizontal well according to claim 1, characterized in that: The inner wall of the sampling bottle (44) is provided with a rubber stopper, and the inner wall of the rotating block (42) and the placing ring (41) are threadedly connected with a fixing pin (48).

5. The staged oil production device for a tight oil horizontal well according to claim 4, characterized in that: A plurality of fixing holes (49) are provided on the surface of the rotating block (42), and the inner walls of the fixing holes (49) of the rotating block (42) are threadedly connected to the surface of the fixing pin (48).

6. The staged oil production device for a tight oil horizontal well according to claim 1, characterized in that: The inner wall of the auxiliary pipe (3) is provided with a blocking device (5), and the blocking device (5) comprises a moving block (51), the surface of the moving block (51) is slidably connected to the inner wall of the auxiliary pipe (3), and the side wall of the moving block (51) is fixedly connected to a blocking disk (52), and the blocking disk (52) is inserted into the inner wall of the auxiliary pipe (3), and the upper and lower ends of the blocking disk (52) are fixedly connected to sealing disks (53).

7. A staged oil production device for a tight oil horizontal well according to claim 6, characterized in that At: The side wall of the auxiliary pipe (3) is fixedly connected to a limiting block (54) at a position close to the moving block (51). The inner walls of the moving block (51) and the limiting block (54) are threadedly connected to a limiting pin (55).

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