An oil and gas production pipeline structure

Abstract

The present invention provides an oil and gas production pipeline structure, comprising: a well pattern pipeline with a flange at its end; a connecting pipe abutting the flange; and multiple housings each having a radially inwardly extending housing protrusion, mounted on the connecting pipe. The housings are configured to lock together, with the housing protrusion abutting the side of the flange facing away from the connecting pipe. This invention alleviates the technical problems of loose connections and low compressive strength at the connections of pipelines connecting vertical shafts in a well pattern.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas reservoir development, and in particular to an oil and gas production pipeline structure. Background Art

[0002] The well pattern is a crucial component of oil and gas reservoir development plans, impacting oilfield development efficiency, ultimate recovery, and the economic benefits of oilfield development. A well pattern typically consists of multiple vertical wells. During the installation of the pre-set well pattern distribution, pipelines are required to tightly connect the vertical wells.

[0003] Currently, pipes are primarily connected using either ferrule or self-locking connections, both of which utilize threads for secure connection. These connections can become loose over time, and the compressive strength of the connections is low, posing a safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to provide an oil and gas production pipeline structure to alleviate the technical problems that pipelines connecting vertical shafts in a well network are prone to loose connections and have low compressive strength at the connections.

[0005] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] The present invention provides an oil and gas production pipeline structure, comprising:

[0007] Well network pipes, with flanges at their ends;

[0008] a connecting pipe abutting against the flange;

[0009] A plurality of shell covers, each shell cover having a shell cover protrusion extending radially inward, and each shell cover is mounted on the connecting pipe;

[0010] The plurality of shells are configured to be locked together, and the shell protrusion abuts against a side of the flange facing away from the connecting pipe.

[0011] In a preferred embodiment, the shells are slidably mounted on the connecting pipe, and a plurality of the shells are configured to move radially inwardly to be locked together.

[0012] In a preferred embodiment, a radially extending sliding rod is fixedly connected to the connecting pipe, a sliding sleeve is fixedly connected to the shell cover, and the sliding sleeve is slidably mounted on the sliding rod.

[0013] In a preferred embodiment, the oil and gas production pipeline structure includes a support pipe, the support pipe is fixedly connected to the connecting pipe, and the outer wall of the support pipe is supported by the inner wall of the well network pipeline.

[0014] In a preferred embodiment, the oil and gas production pipeline structure includes a movable pipe and a casing fixedly connected to the movable pipe. The movable pipe is disposed within the well network pipeline and the outer diameter of the movable pipe is smaller than the inner diameter of the well network pipeline. The movable pipe is installed on the connecting pipe. The casing is located on the side of the support pipe away from the connecting pipe, and the outer wall of the casing is supported against the inner wall of the well network pipeline.

[0015] In a preferred embodiment, the outer wall of the movable pipe is respectively in contact with the inner wall of the support pipe and the inner wall of the connecting pipe.

[0016] In a preferred embodiment, the movable pipe is threadedly connected to the connecting pipe.

[0017] In a preferred embodiment, the inner wall of the connecting pipe is provided with a threaded groove, and the end of the movable pipe is provided with a connecting cylinder that is in threaded engagement with the threaded groove.

[0018] In a preferred embodiment, the outer wall of the connecting pipe is provided with a mounting plate.

[0019] In a preferred embodiment, the two ends of the connecting pipe are respectively connected to the well network pipelines, and the well network pipelines and the connecting pipe are fixedly connected through the shell cover.

[0020] The features and advantages of the present invention are as follows:

[0021] Using this oil and gas production pipeline structure to connect the well network pipelines, abut the flange of the well network pipeline against the connecting pipe, and the convex part of the shell cover abuts against the flange, so that the flange can be pressed tightly against the connecting pipe, ensuring the connection strength between the connecting pipe and the well network pipeline, avoiding loosening, and improving the compressive strength at the connection. In the case where two well network pipelines need to be connected, the two well network pipelines can be respectively connected to both ends of the connecting pipe, thereby realizing the sealed connection of the two well network pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention, and for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is a schematic structural diagram of the oil and gas production pipeline structure provided by the present invention;

[0024] Figure 2 is Figure 1 a schematic connection diagram of the connecting pipe and the shell cover in the oil and gas production pipeline structure shown;

[0025] Figure 3 for Figure 1 The structural diagram of the sliding connection mechanism in the oil and gas production pipeline structure shown;

[0026] Figure 4 for Figure 1 A partial cross-sectional view of

[0027] Figure 5 for Figure 3 A local enlarged view of point A in the figure.

[0028] Description of Figure Numbers:

[0029] 1. Connecting pipe; 12. Threaded groove; 7. Mounting plate;

[0030] 2. Movable tube; 11. Connecting tube;

[0031] 3. Casing;

[0032] 4. Well network pipe; 41. Flange;

[0033] 5. Shell cover; 51. Shell cover raised portion; 8. Mounting hole;

[0034] 60. Sliding connection mechanism; 6. Sliding sleeve; 9. Sliding rod; 10. Sliding groove;

[0035] 13. Shell cover locking mechanism; 131. Locking bolt;

[0036] 14. Support tube. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0038] The present invention provides an oil and gas production pipeline structure, such as Figure 1 As shown, the oil and gas production pipeline structure includes: a well network pipeline 4, a connecting pipe 1 and a plurality of shell covers 5, the end of the well network pipeline 4 is provided with a flange 41; the connecting pipe 1 abuts against the flange 41; the shell cover 5 is provided with a shell cover protrusion 51 extending radially inward, and the shell cover 5 is installed on the connecting pipe 1; the plurality of shell covers 5 are constructed to be locked together, and the shell cover protrusion 51 abuts against the side of the flange 41 away from the connecting pipe 1.

[0039] This oil and gas production pipeline structure is used to connect the well network pipeline 4. The flange 41 of the well network pipeline 4 is abutted against the connecting pipe 1, and the shell cover convex part 51 is abutted against the flange 41, so that the flange 41 can be pressed tightly against the connecting pipe 1, ensuring the connection strength between the connecting pipe 1 and the well network pipeline 4, avoiding loosening, and improving the compressive strength at the connection. In the case where two well network pipelines 4 need to be connected, the two well network pipelines 4 can be respectively connected to both ends of the connecting pipe 1, thereby realizing the sealed connection of the two well network pipelines 4.

[0040] The connection method between the shell cover 5 and the connecting pipe 1 is not limited to one kind. For example, the shell cover 5 and the connecting pipe 1 are connected in a separable manner, and when multiple shell covers 5 are joined together, they can be fixed to the connecting pipe 1. The joining and locking between multiple shell covers 5, and the shell cover 5 and the connecting pipe 1 can be fixed by screws.

[0041] As Figure 1 shown, the shell cover convex part 51 wraps the flange 41 to limit the axial movement of the well network pipeline 4. As Figure 2 shown, the shell cover convex part 51 is provided with a mounting hole 8, and the bolt cooperates with the mounting hole 8 and is connected to the flange 41 to fix the well network pipeline 4.

[0042] In an embodiment of the present invention, the shell cover 5 is slidably mounted on the connecting pipe 1, and multiple shell covers 5 are configured to move radially inward to be locked together. As Figure 1 and Figure 2 shown, when the shell cover 5 moves radially outward, the distance between multiple shell covers 5 increases, facilitating the movement of the flange 41 of the well network pipeline 4 towards the connection and enabling the flange 41 to move to the inside of the shell cover convex part 51. When multiple shell covers 5 move radially inward to the locked position, they are locked together. As Figure 1 shown, adjacent two shell covers 5 are locked together through a shell cover locking mechanism 13. Specifically, the shell cover locking mechanism 13 includes a locking bolt 131. The shell cover 5 is provided with lugs, and the locking bolt 131 passes through the lugs on adjacent two shell covers 5 to lock adjacent two shell covers 5 together. The lugs can be welded to the shell cover 5.

[0043] Furthermore, the shell cover 5 is slidably mounted on the connecting pipe 1 through a sliding connection mechanism 60. As Figure 3 and Figure 5As shown, the sliding connection mechanism 60 includes a slide bar 9 and a sliding sleeve 6. The slide bar 9 is fixedly connected to the connecting pipe 1 and extends radially. The sliding sleeve 6 is fixedly connected to the housing cover 5, and the sliding sleeve 6 is slidably sleeved on the slide bar 9. By the cooperation of the slide bar 9 and the sleeve, axial movement between the housing cover 5 and the connecting pipe 1 can be restricted, the position of the housing cover 5 on the connecting pipe 1 can be limited, and moreover, the sliding sleeve 6 and the slide bar 9 play a guiding role in the radial movement of the housing cover 5, facilitating the butting of the well network pipeline 4 against the connecting pipe 1 and fixing it through the housing cover 5.

[0044] Preferably, as Figure 2 and Figure 3 shown, the housing cover 5 is semi-circular. This oil and gas production pipeline structure includes two housing covers 5, and the two housing covers 5 can be assembled into a complete circle, which is convenient for the installation calibration and locking of the housing cover 5.

[0045] In an embodiment of the present invention, this oil and gas production pipeline structure includes a support pipe 14. The support pipe 14 is fixedly connected to the connecting pipe 1. As Figure 1 and Figure 4 shown, the outer wall of the support pipe 14 supports on the inner wall of the well network pipeline 4. As Figure 1 and Figure 4 shown, the support pipe 14 fits with the inner wall of the well network pipeline 4, supports the well network pipeline 4, increases the stress area of the well network pipeline 4, and thus increases the compressive strength and sealing performance of the well network pipeline 4. Specifically, the support pipe 14 is welded to the connecting pipe 1.

[0046] In an embodiment of the present invention, this oil and gas production pipeline structure includes a movable pipe 2 and a casing 3 fixedly connected to the movable pipe 2. The movable pipe 2 is arranged inside the well network pipeline 4 and the outer diameter of the movable pipe 2 is smaller than the inner diameter of the well network pipeline 4. The movable pipe 2 is installed on the connecting pipe 1; the casing 3 is fixedly connected to the end of the movable pipe 2 away from the connecting pipe 1, and the casing 3 is located on the side of the support pipe 14 away from the connecting pipe 1. The outer wall of the casing 3 supports on the inner wall of the well network pipeline 4. As Figure 1 and Figure 4 shown, the movable pipe 2 drives the casing 3 to extend into the well network pipeline 4. The casing 3 fits with the inner wall of the well network pipeline 4, supports the well network pipeline 4, increases the stress area of the well network pipeline 4, and thus increases the compressive strength of the well network pipeline 4. Preferably, the casing 3 and the support pipe 14 are axially distributed along the connecting pipe 1, and there is a gap between the two.

[0047] The outer diameter of the support pipe 14 is equal to the outer diameter of the casing 3, and they respectively fit with the inner wall of the well network pipeline 4. As Figure 4As shown, the inner diameter of the connecting pipe 1 is smaller than the inner diameter of the well pattern pipe 4. Further, the outer wall of the movable pipe 2 is respectively in contact with the inner wall of the support pipe 14 and the inner wall of the connecting pipe 1, increasing the mating area between the movable pipe 2 and the connecting pipe 1, and the mating area between the movable pipe 2 and the support pipe 14, enhancing the overall strength of the oil and gas production pipeline structure.

[0048] In an embodiment of the present invention, the movable pipe 2 is threadedly connected to the connecting pipe 1. In use, the movable pipe 2 can be first connected to the connecting pipe 1, and then the well pattern pipe 4 is abutted against the connecting pipe 1. By rotating the movable pipe 2, the movable pipe 2 can be connected to the connection.

[0049] Further, the inner wall of the connecting pipe 1 is provided with a thread groove 12, as Figure 4 shown, the end of the movable pipe 2 is provided with a connecting cylinder 11 that is threadedly engaged with the thread groove 12. The outer wall of the connecting cylinder 11 is provided with an external thread that is engaged with the thread groove 12. By connecting and cooperating with the thread groove 12, the strength of the connection between the movable cylinder and the connecting pipe 1 can be ensured.

[0050] As Figure 1 and Figure 4 shown, the outer wall of the connecting pipe 1 is provided with a mounting plate 7 to facilitate pushing the connecting pipe 1 through the mounting plate 7 so that the connecting pipe 1 abuts against the well pattern pipe 4. The sliding rod 9 can be disposed on the mounting plate 7, as Figure 3 and Figure 5 shown, the mounting plate 7 is provided with a chute 10, the sliding rod is welded in the chute 10, and the sliding sleeve 6 can move along the sliding rod 9 in the chute 10.

[0051] In an embodiment of the present invention, the two ends of the connecting pipe 1 are respectively connected to the well pattern pipes 4, and the two well pattern pipes 4 are hermetically connected through the connecting pipe 1. Preferably, as Figure 1 shown, the well pattern pipe 4 and the connecting pipe 1 are fixedly connected through a housing cover 5.

[0052] Figure 1 - Figure 4 The oil and gas production pipeline structure shown can be installed according to the following steps:

[0053] Step S10, rotate the movable pipe 2 so that the movable pipe 2 is connected to the thread groove 12, and insert the casing 3 into the well pattern pipe 4;

[0054] Step S20, push the mounting plate 7 so that the connecting pipe 1 moves until the well pattern pipe 4 abuts against the connecting pipe 1;

[0055] Step S30, radially push the housing cover inward, fit a plurality of housing covers together and lock them, so that the housing cover covers the flange end of the well pattern pipe 4, and is connected to the mounting hole 8 through an external bolt to complete the fixation of the well pattern pipe 4.

[0056] The movable pipe 2 drives the casing pipe 3 to extend into the well pattern pipeline 4. The support pipe 14 and the casing pipe 3 are attached to the inner wall of the well pattern pipeline 4 to support the well pattern pipeline 4, increasing the stress area of the well pattern pipeline 4 and increasing the compressive strength between the well pattern pipelines 4. The oil and gas production pipeline structure provided by the present invention can be applied to the gas injection three-dimensional well pattern structure of a dual-medium reservoir.

[0057] The above are only several embodiments of the present invention. Those skilled in the art can make various changes or modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention based on the content disclosed in the application documents.

Claims

1. An oil and gas production pipeline structure, characterized in that, include: Well network pipes, with flanges at their ends; a connecting pipe abutting against the flange; A plurality of shell covers, each shell cover having a shell cover protrusion extending radially inward, and each shell cover is mounted on the connecting pipe; The plurality of shell covers are configured to be locked together, with the shell cover protrusion abutting against a side of the flange facing away from the connecting pipe; The oil and gas production pipeline structure includes a support pipe, the support pipe is fixed to the connecting pipe, and the outer wall of the support pipe is supported by the inner wall of the well network pipeline; The oil and gas production pipeline structure includes a movable pipe and a casing fixed to the movable pipe, the movable pipe is arranged in the well network pipeline and the outer diameter of the movable pipe is smaller than the inner diameter of the well network pipeline, and the movable pipe is installed in the connecting pipe; The casing is located on a side of the support pipe away from the connecting pipe, and the outer wall of the casing is supported by the inner wall of the well network pipe; The outer wall of the movable tube is respectively fitted with the inner wall of the support tube and the inner wall of the connecting tube; The movable pipe is threadedly connected to the connecting pipe.

2. The oil and gas production pipeline structure according to claim 1, characterized in that, The shells are slidably mounted on the connecting pipe, and a plurality of the shells are configured to move radially inwardly to be locked together.

3. The oil and gas extraction pipeline structure according to claim 2, wherein, A radially extending sliding rod is fixedly connected to the connecting pipe, a sliding sleeve is fixedly connected to the shell cover, and the sliding sleeve is slidably sleeved on the sliding rod.

4. The oil and gas extraction pipeline structure according to claim 1, characterized in that, The inner wall of the connecting pipe is provided with a thread groove, and the end of the movable pipe is provided with a connecting cylinder threadably matched with the thread groove.

5. The oil and gas extraction pipeline structure according to claim 1, characterized in that, The outer wall of the connecting pipe is provided with a mounting plate.

6. The oil and gas production pipeline structure according to claim 1, characterized in that, Both ends of the connecting pipe are respectively connected to the well network pipeline, and the well network pipeline and the connecting pipe are fixedly connected via the shell cover.

Images