Marine ultrahigh-temperature high-pressure well hydraulic control pipeline protector

Abstract

The utility model relates to the technical field of oil exploitation, in particular to an offshore ultrahigh-temperature and high-pressure well hydraulic control pipeline protector which comprises a first encircling part, a second encircling part and a locking assembly, one end of the first encircling part is rotationally connected with the second encircling part, and the other end of the first encircling part is rotationally connected with the locking assembly. The other end of the first surrounding part is connected with the second surrounding part through the locking assembly, and a pipeline groove is formed in the first surrounding part or the second surrounding part. According to the utility model, the underground pipeline can be protected in a high-temperature and high-pressure environment, the pipeline is prevented from being damaged, the safety is improved, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil exploitation, more particularly to a kind of offshore superhigh temperature high pressure well hydraulic control pipeline protector. BACKGROUND

[0002] With the continuous development of offshore superhigh temperature high pressure gas field, higher requirements are put forward to the temperature and pressure resistance of downhole tool, and how to ensure that downhole pipeline is not damaged under superhigh temperature and high pressure becomes an important issue in offshore oil exploitation technology. The current downhole pipeline may be damaged due to corrosion, vibration, impact and other problems during long-term use, affecting the use effect. UTILIT Y MODEL CONTENT

[0003] The utility model aims at overcoming the deficiency that pipeline is easy to be damaged under high temperature and high pressure in prior art, and provides a kind of offshore superhigh temperature high pressure well hydraulic control pipeline protector, which provides protection for downhole pipeline, avoids pipeline damage, and improves safety and service life.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of:

[0005] A kind of offshore superhigh temperature high pressure well hydraulic control pipeline protector is provided, comprising first embracing portion, second embracing portion and locking assembly, the first embracing portion one end is rotatably connected with the second embracing portion, the other end of the first embracing portion is connected with the second embracing portion by the locking assembly, pipeline slot is arranged on the first embracing portion or the second embracing portion.

[0006] The offshore superhigh temperature high pressure well hydraulic control pipeline protector of the utility model can fix downhole pipeline on the outer wall of oil pipe. During use, first, unlock the locking assembly, place the downhole pipeline in the pipeline slot, then rotate the first embracing portion and the second embracing portion to make the pipeline tightly adhere to the outer wall of oil pipe, finally, fix the relative position of the first embracing portion and the second embracing portion by the locking assembly, and fix the protector as a whole on the oil pipe. On the one hand, it can increase the friction between the pipeline and the oil pipe, avoid the pipeline from sliding or separating from the oil pipe, on the other hand, it can protect the pipeline in the pipeline slot from being broken by foreign matter impact, thereby improving the safety and service life of the pipeline.

[0007] Further, the locking assembly comprises a pin shaft fixed on the first embracing part and a fixing member abutting against the second embracing part at one end and detachably connected with the pin shaft at the other end. The pin shaft is fixed on the first embracing part, the fixing member is connected with the pin shaft at one end and abuts against the second embracing part at the other end, thereby fixing the relative position between the first embracing part and the second embracing part and avoiding loosening therebetween. When the pipeline needs to be replaced, the fixing member can be detached from the pin shaft to open the offshore UHTHP well hydraulic control pipeline protector.

[0008] Further, the first embracing part is provided with a first connecting block, the second embracing part is provided with a second connecting block, the first connecting block is provided with a connecting hole, the pin shaft is threadedly connected with the connecting hole, and the second connecting block is provided with an abutting part abutting against the fixing member. The first connecting block and the second connecting block can enhance the overall strength of the offshore UHTHP well hydraulic control pipeline protector and prevent bending and deformation during use. The connecting hole in the first connecting block is threadedly connected with the pin shaft to fix the position of the pin shaft. The second connecting block is provided with the abutting part to ensure that the fixing member and the pin shaft can stably fix the relative position between the first connecting block and the second connecting block after being connected.

[0009] Further, the fixing member is a bolt, the pin shaft is provided with a threaded hole perpendicular to the axis of the pin shaft, one end of the bolt is threadedly connected with the threaded hole, and the other end of the bolt abuts against the second embracing part. The connection between the bolt and the threaded hole is stable and reliable, the installation and dismounting operation is simple, the processing technology is simple, and the bolt is suitable for connecting and fixing between the first embracing part and the second embracing part.

[0010] Further, the bolt comprises a threaded part, a flange surface and a mounting head part, the threaded part is connected with the mounting head part, the flange surface is sleeved on the threaded part and connected with the mounting head part, and the flange surface abuts against the second embracing part. The bolt is stably connected with the pin shaft through the threaded part, and the flange surface can increase the contact area between the bolt and the second embracing part. The abutting effect between the flange surface and the second embracing part is stable and can avoid damaging the bolt structure due to excessive stress during use.

[0011] Further, the threaded part is provided with a second pin hole, and the second pin hole is provided with an elastic pin for fastening the bolt. When the bolt passes through the threaded hole, the elastic pin is ejected from the second pin hole to abut against the first embracing part, thereby increasing the fastening degree of the bolt connection and avoiding backtracking and loosening during use.

[0012] Further, the pin shaft end is provided with a recess hole, recess grooves are symmetrically arranged on both sides of the recess hole and communicate with the recess hole.

[0013] Further, the first ring embracing part is provided with a rotating part, the second ring embracing part is provided with a rotating groove, the rotating part is arranged in the rotating groove, an inner part of the rotating part is provided with a rotating shaft which is rotationally connected with the rotating part, and the rotating shaft is rotationally connected with the rotating groove.

[0014] Further, the first ring embracing part and the second ring embracing part are both provided with semicircular installation grooves, the pipeline groove is semicircular and communicates with the installation grooves, and a transition connection position of the pipeline groove and the installation grooves is a round corner structure.

[0015] Further, the first ring embracing part and / or the second ring embracing part is provided with an observation window.

[0016] Compared with the prior art, the oil pipeline protector has the following beneficial effects:

[0017] 1. The oil pipeline protector can provide protection for the downhole pipeline in a high-temperature and high-pressure environment, avoid pipeline damage, and improve safety and service life.

[0018] 2. The device has a simple structure, is convenient for field operators to use, and is fast in installation and disassembly operation.

[0019] 3. The connecting structure is stable and reliable, and there is no risk of loosening and falling during use. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic view of the oil pipeline protector;

[0021] Figure 2 FIG. 2 is a front view of the oil pipeline protector;

[0022] Figure 3 is a top view of a pipeline protector;

[0023] Figure 4 is a structural schematic view of a fixing member.

[0024] In the drawings: 100, first embracing part; 110, pipeline slot; 120, rotating part; 121, rotating shaft; 130, mounting slot; 140, first connecting block; 141, connecting hole; 150, observation window; 200, second embracing part; 210, second connecting block; 211, abutting part; 300, locking assembly; 310, pin shaft; 311, threaded hole; 320, bolt; 321, threaded part; 322, flange face; 323, mounting head; 324, second pin hole; 325, elastic pin; 326, recess; 327, groove. DETAILED DESCRIPTION

[0025] The utility model will be further explained in connection with specific embodiments. Among them, the drawings are only used for example description, and the representation is only a schematic diagram, and cannot be understood as the limitation of the patent; in order to better illustrate the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of the actual product is not represented; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0026] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore the position relationship description in the drawings is only used for example description, and cannot be understood as the limitation of the patent, for the ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0027] Embodiment one

[0028] The embodiment is the first embodiment of the pipeline protector, including the first embracing part 100, the second embracing part 200 and the locking assembly 300, the first embracing part 100 one end is rotationally connected with the second embracing part 200, the first embracing part 100 other end is connected with the second embracing part 200 through the locking assembly 300, and the first embracing part 100 or the second embracing part 200 is equipped with the pipeline slot 110.

[0029] The pipeline protector in the embodiment can fix the downhole pipeline on the outer wall of the oil pipe, for example,Figure 1 As shown, in use, first open the locking assembly 300, place the downhole pipeline in the pipeline groove 110, then rotate the first embracing part 100 and the second embracing part 200 to make the pipeline closely adhere to the outer wall of the oil pipe, and finally fix the relative position of the first embracing part 100 and the second embracing part 200 through the locking assembly 300 to fix the protector as a whole on the oil pipe, which can increase the friction between the pipeline and the oil pipe, avoid the pipeline from sliding or separating from the oil pipe, and on the other hand, can protect the pipeline in the pipeline groove 110 from being broken by foreign matter, thereby improving the safety and service life of the pipeline.

[0030] In the development process of offshore super-high temperature and high pressure gas field, the oil pipe material of the production string is often selected as nickel-based alloy to adapt to the high temperature and high pressure working environment. The pipeline protector made of traditional metal material will produce galvanic corrosion after long time contact with the nickel-based alloy oil pipe, which will cause the production oil pipe to weaken in strength and stress damage, etc. Therefore, the first embracing part 100 and the second embracing part 200 in the embodiment can be selected as PEEK material, i.e. polyether ether ketone, which is a special engineering plastic with high temperature resistance, easy processing and high mechanical strength, and can well adapt to the requirements of high temperature and high pressure environment, and at the same time avoid electrochemical corrosion.

[0031] After the pipeline protector of the embodiment is installed outside the oil pipe or the oil pipe coupling, it can also be placed as a whole inside the casing, at this time the side surfaces of the first embracing part 100 and the second embracing part 200 are in abutment with the inner wall of the casing, and the abutment surfaces need to be rounded to avoid damaging the surface of the casing. Under this installation condition, the pipeline protector has the function of righting the oil pipe, which can further slow down the bending phenomenon of the production oil pipe under super-high temperature and high pressure, which is beneficial to the implementation of downhole operation in the later period and ensures the safety of the pipe string.

[0032] The locking assembly 300 includes a pin shaft 310 and a fixing piece, the pin shaft 310 is fixed on the first embracing part 100, one end of the fixing piece is in abutment with the second embracing part 200, and the other end is detachably connected with the pin shaft 310. The pin shaft 310 is fixed on the first embracing part 100, one end of the fixing piece is connected with the pin shaft 310, and the other end is in abutment with the second embracing part 200, so as to fix the relative position between the first embracing part 100 and the second embracing part 200, and avoid loosening between them. When the pipeline needs to be replaced, the fixing piece can be removed from the pin shaft 310 to open the offshore super-high temperature and high pressure well hydraulic control pipeline protector.

[0033] As Figure 1As shown, the first embracing part 100 is provided with a first connecting block 140, the second embracing part 200 is provided with a second connecting block 210, the first connecting block 140 is provided with a connecting hole 141, the pin shaft 310 is threadedly connected with the connecting hole 141, and the second connecting block 210 is provided with an abutting part 211 abutting against the fixing part. The first connecting block 140 and the second connecting block 210 can enhance the overall strength of the offshore super-high temperature and high pressure well hydraulic control pipeline protector, prevent bending and deformation in the use process, the connecting hole 141 provided inside the first connecting block 140 is threadedly connected with the pin shaft 310, the position of the pin shaft 310 can be fixed, the abutting part 211 provided on the second connecting block 210 can ensure that the relative position of the first connecting block 140 and the second connecting block 210 can be stably fixed after the fixing part is connected with the pin shaft 310.

[0034] As shown in the drawings, Figure 2 The inner sides of the first embracing part 100 and the second embracing part 200 are provided with semicircular mounting grooves 130. The semicircular mounting grooves 130 enable the first embracing part 100 and the second embracing part 200 to closely adhere to the outer wall of the oil pipe, and enhance the fixing effect of the pipeline protector on the oil pipe.

[0035] The pipeline groove 110 is semicircular and communicates with the mounting groove 130, and the transition connection part of the pipeline groove 110 and the mounting groove 130 is a round corner structure. As shown in the drawings, Figure 2 The semicircular pipeline groove 110 is suitable for placing the circular pipeline in the pipeline groove 110, and is arranged at a position communicating with the mounting groove 130, so that the pipeline can closely adhere to the outer wall of the oil pipe and avoid sliding, and the round corner structure of the connection part of the pipeline groove 110 and the mounting groove 130 can ensure smooth transition and avoid damaging the surface structure of the pipeline. The size of the pipeline groove 110 can be adaptively adjusted according to the size of the hydraulic control pipeline, so that the pipeline of different sizes will not be damaged in the running process. The pipeline protector can right the hydraulic control pipeline and make it closely adhere to the oil pipe body and the coupling. The pipeline groove 110 in the embodiment is further provided with a reinforcing rib in the axial direction of the offshore super-high temperature and high pressure well hydraulic control pipeline protector, so as to enhance the overall strength and reliability and avoid the strength reduction caused by the opening of the pipeline groove 110.

[0036] The end of the pin shaft 310 is provided with a recess hole 326, and recess grooves 327 communicating with the recess hole 326 are symmetrically arranged on both sides of the recess hole 326. The recess hole 326 and the recess grooves 327 at the end of the pin shaft 310 facilitate cooperation with the installation tool, so that the user can quickly complete the installation of the pin shaft 310 in the through hole and quickly move the pin hole on the pin shaft 310 to the position aligned with the fixing part.

[0037] As shown in the drawings, Figure 1As shown in the drawings, the first ring 100 and / or the second ring 200 is provided with an observation window 150. The observation window 150 is provided on the first ring or the second ring 200, which can reduce the overall weight of the pipeline protector, reduce production cost, and facilitate the user to observe the internal oil pipe state without disassembling the pipeline protector.

[0038] The working principle of the pipeline protector in the embodiment is as follows: first, the locking assembly 300 is opened, the downhole pipeline is placed in the pipeline groove 110, the first ring 100 and the second ring 200 are rotated to make the pipeline closely adhere to the outer wall of the oil pipe, and finally the pin is inserted into the pin shaft 310 to fix the relative position of the first ring 100 and the second ring 200, and the first ring 100 and the second ring 200 are fixed on the oil pipe.

[0039] Embodiment two

[0040] The second embodiment of the pipeline protector is similar to the first embodiment, and the difference is that the fixing member is a bolt 320, the pin shaft 310 is provided with a threaded hole 311 perpendicular to the axis of the pin shaft 310, the bolt 320 is threadedly connected with the threaded hole 311, and the other end is in abutment with the second ring 200. The connection between the bolt 320 and the threaded hole 311 is stable and reliable, and the installation and disassembly operation is simple, and the machining process is simple, which is suitable for the connection and fixation between the first ring 100 and the second ring 200.

[0041] The bolt 320 includes a threaded portion 321, a flange surface 322, and a mounting head 323, the threaded portion 321 is connected with the mounting head 323, the flange surface 322 is sleeved on the threaded portion 321 and connected with the mounting head 323, and the flange surface 322 is in abutment with the second ring 200. As shown in the drawings, Figure 4 The bolt 320 is stably connected with the pin shaft 310 through the threaded portion 321, and the flange surface 322 can increase the contact area between the bolt 320 and the second ring 200, the abutment effect between the flange surface 322 and the second ring 200 is stable and can avoid damage to the structure of the bolt 320 due to excessive stress during use. The bolt 320 in the embodiment is selected as an external hexagonal flange bolt 320, and the external hexagonal mounting head 323 facilitates quick installation of the bolt 320 on the pin shaft 310, the installation process is simple and fast, which can effectively reduce the waiting time of field operation and improve the timeliness of field operation.

[0042] As shown in the drawings, Figure 4As shown, the threaded portion 321 is provided with a second pin hole 324, and the second pin hole 324 is provided with an elastic pin 325 for fastening the bolt 320. When the bolt 320 passes through the threaded hole 311, the elastic pin 325 is ejected from the second pin hole 324, thereby abutting against the first embracing portion 100, increasing the fastening degree of the bolt 320 connection, and avoiding the occurrence of retrogression in the use process. In the embodiment, the elastic pin 325 can be selected as an elastic cylindrical pin. When the external hexagonal flange bolt 320 and the threaded hole 311 are tightened, the elastic cylindrical pin will be ejected to block the external hexagonal flange bolt 320, avoiding retrogression, and enhancing the fixing effect of the protector.

[0043] The working principle of the pipeline protector in the embodiment is as follows: when the relative position of the first embracing portion 100 and the second embracing portion 200 needs to be locked, the bolt 320 is screwed into the threaded hole 311 on the pin shaft 310, and the flange surface 322 abuts against the second embracing portion 200, and at the same time, the elastic pin 325 is ejected from the second pin hole 324, thereby completing the fixing.

[0044] Embodiment three

[0045] The third embodiment of the pipeline protector is similar to the first embodiment, and the difference lies in that, as shown in Figure 2 , Figure 3 The first embracing portion 100 is provided with a rotating portion 120, and the second embracing portion 200 is provided with a rotating groove, the rotating portion 120 is arranged in the rotating groove, the rotating portion 120 is internally provided with a rotating shaft 121 rotationally connected with the rotating portion 120, and the rotating shaft 121 is rotationally connected with the rotating groove. The rotating shaft 121 and the rotating portion 120 of the first embracing portion 100 are rotationally connected, and the rotating shaft 121 and the transmission groove of the second embracing portion 200 are rotationally connected. During the installation of the pipeline protector, the first embracing portion 100 and the second embracing portion 200 can be quickly installed on the oil pipe by rotating.

[0046] The working principle of the pipeline protector in the embodiment is as follows: the first embracing portion 100 and the second embracing portion 200 are connected through the rotating shaft 121, and during the use process, only the first embracing portion 100 or the second embracing portion 200 needs to be rotated, so that the relative position can be adjusted, and the first embracing portion 100 and the second embracing portion 200 can be installed on the sidewall of the oil pipe.

[0047] In the specific contents of the above specific embodiments, any inconsistent combination of technical features can be combined, and in order to make the description simple, not all possible combinations of the above technical features are described, however, as long as the combination of these technical features does not exist, it should be considered as the scope described in the specification.

[0048] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. An offshore ultra-high temperature and high pressure well fluid control line saver, characterized in that, The utility model provides a pipeline fixing device, including first ring (100), second ring (200) and locking assembly (300), one end of first ring (100) is rotatory connection with second ring (200), the other end of first ring (100) is connected with second ring (200) through locking assembly (300), be equipped with pipeline groove (110) on first ring (100) or second ring (200); Locking assembly (300) includes pin shaft (310) and fixed part, pin shaft (310) is fixed on first ring (100), one end of fixed part is abutted with second ring (200), and the other end is detachably connected with pin shaft (310); First connecting block (140) is equipped on first ring (100), second connecting block (210) is equipped on second ring (200), connecting hole (141) is equipped in first connecting block (140), pin shaft (310) is threadedly connected with connecting hole (141), and abutting portion (211) is equipped on second connecting block (210) and is abutted with fixed part; Fixed part is bolt (320), and threaded hole (311) perpendicular to the axis of pin shaft (310) is equipped in pin shaft (310), one end of bolt (320) is threadedly connected with threaded hole (311), and the other end is abutted with abutting portion (211).

2. The offshore UHTHP well fluid control line protector of claim 1, wherein, Bolt (320) includes threaded portion (321), flange face (322) and mounting head (323), threaded portion (321) is connected with mounting head (323), flange face (322) is sleeved on threaded portion (321) and is connected with mounting head (323), and flange face (322) is abutted with abutting portion (211).

3. The offshore UHTHP well fluid control line protector of claim 2, wherein, Second pin hole (324) is equipped on threaded portion (321), and elastic pin (325) for fastening bolt (320) is equipped in second pin hole (324).

4. The offshore UHTHP well fluid control line protector of any one of claims 1 to 3, characterized in that, Pin shaft (310) end is equipped with recess (326), and recess (326) is symmetrically provided with recess (327) communicated with recess (326) on both sides.

5. The offshore ultra-high temperature high pressure well fluid control line protector of any one of claims 1 to 3, wherein, First ring (100) is equipped with rotating portion (120), second ring (200) is equipped with rotating groove, rotating portion (120) is arranged in rotating groove, and rotating shaft (121) rotatably connected with rotating portion (120) is arranged in rotating portion (120), and rotating shaft (121) is rotatably connected with rotating groove.

6. The offshore UHTHP well fluid control line protector of claim 1, wherein, Half circle mounting groove (130) is arranged in the inner side of first ring (100) and second ring (200), pipeline groove (110) is half circle and communicated with mounting groove (130), and the transition connection of pipeline groove (110) and mounting groove (130) is round angle structure.

7. The offshore UHTHP well fluid control line protector of claim 1, wherein, Observation window (150) is arranged on first ring (100) and / or second ring (200).

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