CN217001814U - Underground pipe underground simulation experiment device - Google Patents

Abstract

The utility model discloses a downhole simulation experiment device for a downhole pipe, which comprises a pressurizing system, wherein the pressurizing system is connected with a simulation experiment device through a high-pressure conveying pipe, the simulation experiment device for the downhole pipe joint comprises a first sleeve, a pressure gauge, the downhole pipe joint, a sleeve flange, a sealing ring, a sealing check ring, an outer sealing pressure plate, an inner sealing pressure plate, a high-strength connecting bolt and a high-strength screw, the first sleeve is connected with the high-pressure conveying pipe, the other end of the first sleeve is connected with the downhole pipe joint, and the pressure gauge is installed on the first sleeve. This simulation experiment device under well is managed in pit, rational in infrastructure, the experiment is simple, and is with low costs, advantage such as efficient, can be for the water injection pipe of cage in addition, underground with flexible compound continuous water production, water injection, oil recovery and oil water gas pipeline to simulation experiment device has and can simulate underground with complicated operating mode such as flexible compound continuous oil pipe temperature in the pit, pressure, transport medium.

Description

Underground pipe underground simulation experiment device

Technical Field

The utility model relates to the technical field of underground pipe simulation tests, in particular to an underground pipe simulation test device.

Background

At present, the underground flexible composite coiled tubing becomes one of the important measures for corrosion prevention of the underground well pipe of the oil field, and is widely applied to oil and gas fields and water injection engineering, wherein the underground flexible composite coiled tubing has the advantages of flexibility, capability of being coiled, high installation and construction efficiency, good underground adaptability and the like, and is welcomed by the oil field.

In the process of transportation, installation and service, the underground flexible composite coiled tubing can be subjected to joint leakage, cable collision, insufficient external crushing resistance strength and internal pressure resistance strength of the underground coiled tubing and the like, so that in order to ensure reliable service of the underground flexible composite coiled tubing, the sealing performance, the insulating performance, the external crushing resistance and the internal pressure strength of the underground coiled tubing joint need to be tested.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a downhole simulation experiment device for a downhole pipe, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an underground pipe underground simulation experiment device comprises a pressurizing system and an underground pipe joint, wherein the pressurizing system is connected with a simulation experiment device through a high-pressure conveying pipe, the simulation experiment device of the underground pipe joint comprises a first sleeve, a pressure gauge, the underground pipe joint, a sleeve flange, a sealing ring, a sealing retainer ring, an outer sealing pressure plate, an inner sealing pressure plate, a high-strength connecting bolt and a high-strength screw, wherein the first sleeve is connected with a high-pressure conveying pipe, the other end of the first sleeve is connected with a downhole pipe joint, a pressure gauge is arranged on the first sleeve, two sides of the first sleeve are connected with a sealing ring and a sealing retainer ring, an inner sealing pressure plate is arranged on the sealing ring, an outer sealing pressure plate is arranged on the sealing retainer ring, a high-strength screw penetrates through the outer sealing pressure plate, the inner sealing pressure plate is provided with a high-strength connecting bolt, and the inner sealing pressure plate is provided with a sleeve flange.

Preferably, the simulation experiment device for the crushing outside the underground pipe comprises: the casing in-connection has first experimental appearance pipe, first experimental appearance union coupling has the steel connecting pipe, and the steel connecting pipe is connected with overflow water display tube, install the manometer on the sleeve pipe, and the sleeve pipe front end both sides install external conquassation sleeve pipe flange.

Preferably, the simulation experiment device for the downhole pipe blasting comprises a second test sample pipe, and the second test sample pipe is connected with the high-pressure conveying pipe.

Preferably, the overflow water display pipe is a transparent plastic pipe.

Compared with the prior art, the utility model has the beneficial effects that: this underground pipe underground simulation experiment device, compare with current low tube underground simulation experiment device under, rational in infrastructure, the experiment is simple, and is with low costs, advantages such as efficient, and can be for the water injection pipe of cage system, underground with flexible compound continuous water production, the water injection, oil recovery and oil and water gas pipeline, underground with the relevant experiment before the construction of providing down-hole with pipeline such as intelligent flexible compound coiled tubing, for underground with flexible compound coiled tubing down-hole provide the safety guarantee, and underground simulation experiment device has and can simulate underground with flexible compound coiled tubing downhole temperature, pressure, complex operating mode such as transport medium.

Drawings

FIG. 1 is a schematic structural diagram of a simulation experiment device for a downhole pipe joint according to the present invention;

FIG. 2 is a schematic structural view of a simulation experiment device for downhole external pipe crushing according to the present invention;

FIG. 3 is a schematic structural diagram of a simulation experiment apparatus for downhole tubular blasting according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 1. the pressure system comprises a pressure system, 2, a high-pressure conveying pipe, 3, a sleeve, 4, a pressure gauge, 5, a downhole pipe joint, 6, a sleeve flange, 7, a sealing ring, 8, a sealing retainer ring, 9, an outer sealing pressing plate, 10, an inner sealing pressing plate, 11, a high-strength connecting bolt, 12, a high-strength screw, 13, a steel connecting pipe, 14, an outer pressure crushing sleeve flange, 15, an overflow water display pipe, 16, a first test sample pipe, 17 and a second test sample pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a downhole simulation experiment device of a downhole pipe comprises a pressurizing system 1 and a downhole pipe joint 5, wherein the pressurizing system 1 is connected with a simulation experiment device through a high-pressure conveying pipe 2, the simulation experiment device of the downhole pipe joint comprises a first sleeve 3, a pressure gauge 4, the downhole pipe joint 5, a sleeve flange 6, a sealing ring 7, a sealing retainer ring 8, an outer sealing pressure plate 9, an inner sealing pressure plate 10, a high-strength connecting bolt 11 and a high-strength screw 12, the first sleeve 3 is connected with the high-pressure conveying pipe 2, the other end of the first sleeve 3 is connected with the downhole pipe joint 5, the pressure gauge 4 is installed on the first sleeve 3, the sealing ring 7 and the sealing retainer ring 8 are connected on two sides of the first sleeve 3, the inner sealing pressure plate 10 is installed on the sealing ring 7, the outer sealing pressure plate 9 is installed on the sealing retainer ring 8, the high-strength screw 12 penetrates through the outer sealing pressure plate 9, the high-strength connecting bolt 11 is installed on the inner sealing pressure plate 10, install sleeve flange 6 on the interior sealed clamp plate 10, the simulation experiment device of outer pipe conquassation includes in the pit: a first test sample pipe 16 is connected in the sleeve 3, the first test sample pipe 16 is connected with a steel connecting pipe 13, the steel connecting pipe 13 is connected with an overflow water display pipe 15, a pressure gauge 4 is installed on the sleeve 3, external pressure bursting sleeve flanges 14 are installed on two sides of the front end of the sleeve 3, the overflow water display pipe 15 is a transparent plastic pipe, a simulation experiment device for underground pipe blasting comprises a second test sample pipe 17, the second test sample pipe 17 is connected with a high-pressure conveying pipe 2, and a pressurizing system 1 of the simulation experiment device for the underground pipe joint provides test pressure for the sleeve 3 through the high-pressure conveying pipe 2; the pressurizing system 1 can detect the sealing performance of the underground pipe joint 5, the ambient temperature, the medium temperature, the pressure in the casing pipe 3 and the like; the simulation experiment device of the underground pipe joint simulates the use working condition of the underground joint to provide an underground theoretical basis for the use of the underground pipe joint 5, the sleeve 3 provides the underground temperature, medium and other working conditions for the underground pipe joint 5, the sleeve flange 6 provides sealing performance for the underground pipe joint 5 through the sleeve 3, the sealing ring 7, the sealing retainer ring 8, the outer sealing pressure plate 9, the inner sealing pressure plate 10, the high-strength connecting bolt 11 and the high-strength screw 12, the inner sealing pressure plate 10 adjusts the sealing strength between the underground pipe joint 5 and the sleeve flange 6 through the high-strength screw 12 and the outer sealing pressure plate 9, the deeper the high-strength screw 12 is screwed in, the better the sealing performance between the underground pipe joint 5 and the sleeve flange 6 is, the underground pipe joint 5 is a general water injection pipe joint for underground, the underground flexible composite continuous water, oil and oil extraction pipeline joint or the underground intelligent flexible composite continuous pipe joint, Or downhole tools, the high-pressure delivery pipe 2 is a high-temperature and high-pressure resistant delivery pipe, and simultaneously, the oil resistance, the acid resistance, the alkali resistance and the like are achieved, the sleeve 3 is a common sleeve material for the oil field or the strength of the common sleeve material is superior to that of the common sleeve material for the oil field, the sleeve method 6 is a sealing connection with the sleeve 3, the pressing plate, the outer pressing plate 9 and the inner pressing plate 10 are carriers, the sealing ring 7 is a rubber sealing material meeting the test performance, the simulation test device for the crushing of the outside of the downhole pipe and the simulation test device for the joint of the downhole pipe share the pressing system 1, the high-pressure delivery pipe 2, the first test sample pipe 16, the pressure gauge 4, the high-strength connecting bolt 11, the steel connecting pipe 13, the outer pressing sleeve flange 14 and the overflow water display pipe 15, the pressing system 1 provides the sleeve pressure for the sleeve 3 through the high-pressure delivery pipe 2, Temperature, use the transport medium of operating mode etc, first experimental sample pipe 16 is for using coiled tubing in the pit, the steel connecting pipe 13 resists the external pressure intensity and is greater than using coiled tubing in the pit far away, its material adopts the steel pipe, external pressure bushing method 14 is for being connected with sleeve pipe 3, provide airtight area space under pressure for first experimental sample pipe 16, simulate operating mode such as pressure in the well, temperature and medium, overflow water shows 15 to be transparent plastic pipe, fill first experimental sample pipe 16 and overflow water display pipe 15 with liquid water or the medium of corresponding requirement before the experiment, when sleeve pipe 3 pressure risees, first experimental sample pipe warp, overflow water display pipe 15 internal medium spills over, simulation test device that the outside of the pipe was smashed and is pressed records the pressure temperature curve etc. of experimental sample pipe in the pit, the device provides the use operating mode in the pit for coiled tubing in the pit: the device comprises a pressure system 1 and a high-pressure conveying pipe 2, wherein the pressure system comprises a pressure sensor, a pressure sensors, a pressure sensor, a pressure sensors, a pressure sensor, a pressure sensors, a pressure sensor, a pressure sensors.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a simulation experiment device under well of underground pipe, is including suppressing system (1) and coupling (5) in the pit, its characterized in that: the pressure system (1) is connected with a simulation experiment device through a high-pressure conveying pipe (2), the simulation experiment device of the underground pipe joint comprises a first sleeve (3), a pressure gauge (4), the underground pipe joint (5), a sleeve flange (6), a sealing ring (7), a sealing retainer ring (8), an outer sealing pressure plate (9), an inner sealing pressure plate (10), a high-strength connecting bolt (11) and a high-strength screw (12), the first sleeve (3) is connected with the high-pressure conveying pipe (2), the other end of the first sleeve (3) is connected with the underground pipe joint (5), the pressure gauge (4) is installed on the first sleeve (3), the sealing ring (7) and the sealing retainer ring (8) are connected to two sides of the first sleeve (3), the inner sealing pressure plate (10) is installed on the sealing ring (7), the outer sealing pressure plate (9) is installed on the sealing retainer ring (8), high-strength screws (12) penetrate through the outer sealing pressure plate (9), high-strength connecting bolts (11) are installed on the inner sealing pressure plate (10), and a sleeve flange (6) is installed on the inner sealing pressure plate (10).

2. The downhole tubular simulation experiment device according to claim 1, wherein: the simulation experiment device for the external crushing of the underground pipe comprises: the internal connection of sleeve pipe (3) has first experimental appearance pipe (16), first experimental appearance pipe (16) are connected with steel connecting pipe (13), and steel connecting pipe (13) are connected with overflow water display tube (15), install manometer (4) on sleeve pipe (3), and sleeve pipe (3) front end both sides install outer pressure sleeve pipe flange (14) of bursting.

3. The downhole simulation experiment device of claim 1, wherein: the simulation experiment device for the underground pipe blasting comprises a second test sample pipe (17), wherein the second test sample pipe (17) is connected with the high-pressure conveying pipe (2).

4. The downhole simulation experiment device of claim 2, wherein: the overflow water display tube (15) is a transparent plastic tube.

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