Multi-channel pipe with positioning structure and area identification

Abstract

The utility model relates to the technical field of petroleum engineering, in particular to a multi-channel pipe with a positioning structure and an area identification function, which comprises a first outer protective pipe, an armored pipe and a rubber pipe which are sequentially sleeved together from outside to inside, and a plurality of cables are laid in the rubber pipe. The plurality of cables are fixed in the rubber tube through a plurality of clamping groups which are arranged at intervals; the clamping group comprises a clamping sleeve, a plurality of cable holes sleeved with the cables are formed in the clamping sleeve, a plurality of supporting legs are arranged on the outer wall of the clamping sleeve, and the supporting legs are fixed to the inner wall of the rubber pipe. According to the utility model, different colors are utilized to identify different pipe cables so as to carry out area identification; the card group has a multi-channel structure, so that the diversity of functions is increased; and meanwhile, a layer of rubber pipe and an armor are added, so that the service life is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum engineering technical field especially relates to a multi -channel pipe with positioning structure and area identification. BACKGROUND

[0002] Coiled tubing, also known as flexible tubing, can be up to ten thousand meters long, and can replace conventional tubing to perform many operations. Coiled tubing operation equipment has the characteristics of operating with pressure and continuous lifting down, and has small equipment volume, fast operation cycle and low cost, and is widely used in oil and gas field workover, drilling, well completion, logging and other operations throughout the whole process of oil and gas exploitation. Taking logging as an example, coiled tubing logging technology is a new technology popularized in the field of oil and gas field testing in recent years. The technology is as follows: the cable is threaded through and encapsulated in the coiled tubing, the coiled tubing is connected to the logging instrument at the end, and the ground equipment is used to send the logging instrument to the target well section for testing by relying on the rigidity and toughness of the coiled tubing. According to the depth of logging, the length of the coiled tubing can reach several kilometers or even ten kilometers.

[0003] However, during construction, it is often found that the cable in the coiled tubing of such length often breaks. One of the reasons is that because the diameter of the cable is smaller than the diameter of the tubing (i.e. the tubing and the cable are separated), when the coiled tubing with the cable inside is finished and wound up, the cable will be attached to the inside of the coiled tubing. When used in the well, the cable usually does not attach to the inside of the coiled tubing, but is in a central position. In order to enable both ends of the cable to align with both ends of the coiled tubing, the length requirement of the tubing when the cable is in the central position is greater than the length requirement when the cable is attached to the inside of the coiled tubing during winding, so when the cable changes from the winding state to the operating central state, it will break due to the increased length requirement.

[0004] In the prior art, a coiled tubing cable with a limiting inner clamp is disclosed in Chinese Utility Model Patent No. 201710122020.X, a clamping sleeve is provided on the outside of the cable at certain intervals, the two ends of the clamping sleeve are positioned between the limiting inner clamps, the limiting inner clamps are welded on the inner wall of the coiled tubing, and the clamping sleeve is made of rigid or elastic material and is in interference fit and clamped with the surface of the cable. When the coiled tubing cable is used, on the one hand, most of the weight of the cable can be borne by the limiting inner clamps, and on the other hand, the length of the cable can be basically ensured to be the same as that of the coiled tubing, so that the cable is not easily broken when the coiled tubing cable is bent or straightened.

[0005] The coiled tubing cable with the limiting inner clamps has the following problems: the clamping sleeve is a single-channel single-position clamp, and has a single function; the limiting inner clamps are welded on the inner wall of the coiled tubing, and have a short service life. UTILITY MODEL CONTENTS

[0006] Based on the above problems, the utility model aims at providing a kind of multi-channel pipe with positioning structure and area identification, the utility model uses following technical scheme:

[0007] The utility model provides a kind of multi-channel pipe with positioning structure and area identification, including first outer sheath pipe, armoured pipe and rubber tube that are successively sleeved together from outside to inside, multiple cables are laid in the rubber tube, and multiple cables are fixed in the rubber tube by the fixed several card groups of interval arrangement;

[0008] The card group includes sleeve, is provided with multiple cable holes on the sleeve, is provided with multiple supporting legs on the outer wall of sleeve, and the supporting leg is fixed with the inner wall of rubber tube.

[0009] Preferably, the sleeve includes two assembled together card blocks, the splice surface of two card blocks is provided with wire slot, and the wire slot on two card blocks is assembled to form the cable hole.

[0010] Preferably, the sleeve is circular;Two cable holes are provided on the sleeve.

[0011] Preferably, the supporting leg is provided with recess at the end away from the sleeve, the recess is provided with ball and elastic element, one end of the elastic element is abutted on the ball, the other end is abutted on the bottom of recess, and the recess is filled with hot melt adhesive in the area except the ball and elastic element;

[0012] When the hot melt adhesive is melted after being subjected to high temperature, the ball is ejected from the recess under the action of the elastic element, and is abutted in the limiting groove reserved in the inner wall of rubber tube, and the limiting groove is arranged along the inner wall of rubber tube.

[0013] Preferably, the elastic element is spring.

[0014] Preferably, the guiding groove that is slidably cooperated with the ball is formed on the inner wall of rubber tube, and the guiding groove is arranged along the inner wall of rubber tube.

[0015] Preferably, each cable is provided with identification mark, and the identification mark on each cable is different.

[0016] Preferably, the cable includes conductor wire core, insulating layer and outer sheath layer that are successively sleeved together from inside to outside.

[0017] Preferably, the outer side of outer sheath layer is provided with second outer sheath pipe;The identification mark is the color that outer sheath layer has.

[0018] Compared with prior art, the utility model has the beneficial technical effects:

[0019] (1) The utility model discloses a different color mark different pipe cable to carry out area identification;

[0020] (2) The utility model discloses card group has multichannel structure, and the function diversity of increasing;

[0021] (3) The utility model discloses a layer rubber pipe and armoring, greatly prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further explained in connection with the drawings.

[0023] Fig. 1 For the structure schematic diagram of multichannel pipe of the utility model with positioning structure and area identification;

[0024] Fig. 2 For the main view structural schematic diagram of card group of the utility model;

[0025] Fig. 3 For the setting structure schematic diagram of limiting groove in rubber pipe of the utility model.

[0026] The drawing mark explanation: 1, first outer protective pipe;2, armored pipe;3, rubber pipe;301, limiting groove;302, guide groove;4, cable;401, conductor wire core;402, insulating layer;403, outer protective layer;404, second outer protective pipe;5, card group;501, card sleeve;501-1, card block;501-2, wire slot;502, wire hole;503, support leg;503-1, recess;503-2, ball;503-3, elastic piece. DETAILED DESCRIPTION

[0027] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly clear, the following is combined with the drawings and example, and the utility model is further explained in detail.

[0028] As Figs. 1 to 3 Shown, the embodiment discloses a kind of multichannel pipe with positioning structure and area identification, including from outer to inside successively together with the first outer protective pipe 1, armored pipe 2 and rubber pipe 3, rubber pipe 3 is laid with multiple cables 4, and multiple cables 4 are fixed in rubber pipe 3 by the several card groups 5 of interval arrangement.

[0029] Card group 5 includes card sleeve 501, and card sleeve 501 is provided with multiple wire holes 502 with cable 4 sleeve, and the outer wall of card sleeve 501 is provided with multiple support legs 503, and support leg 503 is fixed with the inner wall of rubber pipe 3.

[0030] In the embodiment, the sleeve 501 comprises two clamping blocks 501-1 which are assembled together and can be fixed by electric welding after being assembled together.

[0031] In the embodiment, the sleeve 501 is circular, and two wire holes 502 are arranged on the sleeve 501, and the number of the cables 4 is two.

[0032] In the embodiment, the leg 503 is provided with a groove 503-1 at the end away from the sleeve 501, the groove 503-1 is provided with a ball 503-2 and an elastic member 503-3, one end of the elastic member 503-3 abuts against the ball 503-2, the other end abuts against the bottom of the groove 503-1, and the area of the groove 503-1 except the ball 503-2 and the elastic member 503-3 is filled with hot melt adhesive; when the hot melt adhesive is melted after being subjected to high temperature, the ball 503-2 is bounced out of the groove 503-1 under the action of the elastic member 503-3 and abuts against the limiting groove 301 reserved on the inner wall of the rubber tube 3, and the limiting groove 301 is circumferentially arranged along the inner wall of the rubber tube 3, and by using the technology, the clamp group 5 can be conveniently fixed in the rubber tube 3.

[0033] In the embodiment, the inner wall of the rubber tube 3 is provided with a guide groove 302 which is in rolling sliding cooperation with the ball 503-2, and the guide groove 302 is arranged axially along the inner wall of the rubber tube 3. In the initial state, the ball 503-2 is partially exposed from the groove 503-1, and the depth of the guide groove 302 is less than the depth of the limiting groove 301.

[0034] In the embodiment, the elastic member 503-3 is a spring.

[0035] In the embodiment, the cable 4 is provided with an identification mark, and the identification marks on the cables 4 are different from each other, the function of the cable 4 can be identified through the identification mark, and the cables 4 can be conveniently distinguished.

[0036] In the embodiment, the cable 4 comprises a conductor core 401, an insulation layer 402 and an outer protective layer 403 which are sequentially sleeved together from inside to outside, and in the embodiment, the identification mark is a color on the outer protective layer 403.

[0037] In the embodiment, the outer protective layer 403 is sleeved with a second outer protective tube 404. The first outer protective tube 1 and the second outer protective tube 404 are both stainless steel tubes.

[0038] The production process of the utility model:

[0039] The production of the cable: the steel belt passes through a rolling device to produce a preliminary U deformation, facilitating the formation of the shape of the continuous pipe; the colored outer sheath 403 (the outer sheath 403 already contains the conductor core 401 and the insulating layer 402) is placed into the U-shaped steel belt, the U-shaped steel belt passes through the rolling device again to be processed into a tubular shape, and then is welded by laser to form the second outer sheath pipe 404 in the form of an armored layer.

[0040] The installation of the card group: a card group 5 is installed on the cable 4 at a certain distance along the length direction.

[0041] The production of the rubber pipe: rubber material and fillers are placed into a mixing machine to be extruded at a head 140±10℃, a tail 180±10℃ and an extrusion speed of 6±0.5m / min, after the extrusion through the head die, the rubber pipe 3 is internally slotted to form the limiting groove 301 and the guide groove 302.

[0042] The assembly of the cable with the card group in the rubber pipe: the cable 4 with the card group 5 is inserted into the rubber pipe 3, the compressed gas passing through the air pump is filled into the rubber pipe 3 by opening the air pump, the gas flow of the compressed gas pushes the card group 5 into the rubber pipe 3, the exposed part of the ball 503-2 on the card group 5 slides forward along the guide groove 302 in the rubber pipe 3, the cable 4 passes through the metering device to be positioned, facilitating the determination of the position of the card group 5. Then, the rubber pipe 3, the cable 4 and the card group 5 are sent into a steaming box for overall heating, when the temperature is above 60℃, the hot melt adhesive on the card group 5 melts, the ball 503-2 pops out and is fixed on the limiting groove 301 on the inner wall of the rubber pipe 3. Since the depth of the guide groove 302 is less than the depth of the limiting groove 301, there is a height difference between the limiting groove 301 and the guide groove 302. That is, the ball 503-2 pops out, and the card group 5 will not exit in the reverse direction along the guide groove 302.

[0043] The armoring: the stainless steel belt is wound on the outer wall of the rubber pipe 3 to form the armored pipe 2, then the armored pipe 2 is welded on the continuous steel belt, and then the continuous steel belt is processed again to form the first outer sheath pipe 1.

[0044] The above-described embodiments only describe the preferred modes of the present application, and do not limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. A multi-channel tube with a positioning structure and area identification, characterized in that: It comprises a first outer protective tube (1), an armored tube (2), and a rubber tube (3) which are sequentially sheathed together from the outside to the inside, a plurality of cables (4) being laid in the rubber tube (3), and the plurality of cables (4) being fixed in the rubber tube (3) by a plurality of card groups (5) arranged at intervals; The card assembly (5) comprises a card sleeve (501), the card sleeve (501) is provided with a plurality of wire holes (502) for fitting with the cable (4), and the outer wall of the card sleeve (501) is provided with a plurality of supporting legs (503), and the supporting legs (503) are fixed to the inner wall of the rubber tube (3).

2. The multi-channel tube with positioning structure and area identification according to claim 1, characterized in that: The ferrule (501) comprises two assembled card blocks (501-1), the joint surfaces of the two card blocks (501-1) are both provided with wire grooves (501-2), and the wire grooves (501-2) on the two card blocks (501-1) correspond to each other and are assembled to form the wire hole (502).

3. The multi-channel tube with positioning structure and area identification according to claim 1, characterized in that: The ferrule (501) is circular; two thread holes (502) are provided on the ferrule (501).

4. The multi-channel tube with positioning structure and area identification according to claim 1, characterized in that: The leg (503) is provided with a groove (503-1) at one end away from the ferrule (501), a ball (503-2) and an elastic member (503-3) are provided in the groove (503-1), one end of the elastic member (503-3) abuts against the ball (503-2), and the other end abuts against the bottom of the groove (503-1), and the area of ​​the groove (503-1) other than the ball (503-2) and the elastic member (503-3) is filled with hot melt adhesive; When the hot melt adhesive is melted after being subjected to high temperature, the ball (503-2) pops out from the groove (503-1) under the action of the elastic member (503-3) and abuts against a limiting groove (301) reserved on the inner wall of the rubber tube (3), wherein the limiting groove (301) is arranged circumferentially along the inner wall of the rubber tube (3).

5. The multi-channel tube with positioning structure and area identification according to claim 4, characterized in that: The elastic member (503-3) is a spring.

6. The multi-channel tube with positioning structure and area identification according to claim 4, characterized in that: A guide groove (302) for slidingly engaging with the ball (503-2) is provided on the inner wall of the rubber tube (3), and the guide groove (302) is arranged axially along the inner wall of the rubber tube (3).

7. The multi-channel tube with positioning structure and area identification according to claim 1, characterized in that: Each of the cables (4) has an identification mark, and the identification marks on each of the cables (4) are different.

8. The multi-channel tube with positioning structure and area identification according to claim 7, characterized in that: The cable (4) comprises a conductor core (401), an insulating layer (402), and an outer sheath (403) which are sequentially sheathed together from the inside to the outside.

9. The multi-channel tube with positioning structure and area identification according to claim 8, characterized in that: A second outer protective tube (404) is provided on the outer side of the outer protective layer (403); The identification mark is the color on the outside of the outer protective layer (403).

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