CN117825017A - Packer rubber tube peristaltic test device and test method - Google Patents

Packer rubber tube peristaltic test device and test method Download PDF

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Publication number
CN117825017A
CN117825017A CN202211196343.0A CN202211196343A CN117825017A CN 117825017 A CN117825017 A CN 117825017A CN 202211196343 A CN202211196343 A CN 202211196343A CN 117825017 A CN117825017 A CN 117825017A
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CN
China
Prior art keywords
ring
peristaltic
test
rubber
pressure
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Pending
Application number
CN202211196343.0A
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Chinese (zh)
Inventor
叶金胜
于学信
姜国良
孙骞
杨洁
曹雪梅
王芳
王进京
辛林涛
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China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering Shengli Co
Original Assignee
China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering Shengli Co
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Application filed by China Petroleum and Chemical Corp, Sinopec Research Institute of Petroleum Engineering Shengli Co filed Critical China Petroleum and Chemical Corp
Priority to CN202211196343.0A priority Critical patent/CN117825017A/en
Publication of CN117825017A publication Critical patent/CN117825017A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
    • G01M3/2869—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals for seals not incorporated in a pipe joint

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The utility model discloses a packer rubber peristaltic test device and a test method, wherein the device comprises a central tube and an outer tube, wherein a pressure test joint is arranged in the outer tube, a horseshoe-shaped thread is arranged at the upper part of the central tube, the lower end of the central tube is connected with a locking baffle ring, and the outer diameter of the locking baffle ring after connection is larger than the outer diameter of the central tube; an adjusting ring, a rubber cylinder assembly and a supporting ring are arranged in the annular space of the central tube and the outer cylinder and between the setting pressure ring and the locking baffle ring, an upper sealing ring is arranged between the upper part of the outer cylinder and the setting pressure ring, and a lower sealing ring is arranged between the lower part of the outer cylinder and the supporting ring; the pressure test joints in the outer cylinder are provided with two upper pressure test joints and lower pressure test joints respectively. By utilizing the device, the peristaltic working condition of the rubber cylinder in the packer can be simulated, and the current situation that the rubber cylinder of the packer does not have peristaltic working condition test equipment is filled. The utility model can complete the setting pressure test of the rubber cylinder, the normal temperature and high temperature sealing performance of the rubber cylinder assembly under the peristaltic condition, and the sealing life of the rubber cylinder under the peristaltic condition.

Description

Packer rubber tube peristaltic test device and test method
Technical Field
The utility model relates to a performance detection device and method for an underground packer rubber of an oil and gas well, in particular to a peristaltic test device and method for the packer rubber.
Background
The packer is a downhole tool widely used in the downhole operation of an oil and gas well, is provided with a sealing mechanism and a sealing rubber cylinder, and is used for sealing an oil separation sleeve annulus by utilizing the elastic sealing performance of the sealing rubber cylinder and is used for the downhole operation of layered oil extraction, fracturing, water injection and the like, so that the purposes of isolating a production layer, controlling fluid and protecting a casing are achieved. With the development of oil and gas fields, stratum conditions are more and more complex, layering operation is more and more common, packer failure occurs sometimes, and the complex underground construction process brings higher requirements on working performances such as packer pressure resistance.
The factors affecting the failure of the packer are relatively more, including peristalsis of a downhole tubular string, deformation of a well casing, severe downhole environment, hydraulic impact effect and the like. The peristaltic movement of the pipe column is an important cause for the failure of the packer, the pipe column connected with the packer is affected by various loads, piston effect, bulge effect, bending effect and temperature effect in the pit, the stress condition is complex, the peristaltic movement of the packer is easy to cause, the damage of the rubber sleeve is caused, the huge economic loss is caused, and the failure of the sealing rubber sleeve of the packer is also the main cause for the failure of the packer.
Therefore, the packer can be used after comprehensive indoor performance detection before entering the well, so that underground accidents caused by tool quality reasons are avoided as much as possible, and safe production of the oil-gas well is ensured. The packer rubber is an element of which the temperature resistance and the pressure resistance are critical, and under the working condition of peristalsis influence on the packer rubber, the production and the safety of an oil-gas well are directly influenced by the sealing performance of the packer rubber before entering the well, and the sealing performance of the packer rubber under the peristalsis influence should be verified.
In order to solve the above problems, there are the following related test apparatuses:
patent application number CN201320168896.5 discloses a "packer rubber testing device". Said utility model is made up by adopting corrosion-resistant, high-temp. -resistant and corrosion-resistant material, can bear high-temp. and high-pressure, and can independently implement high-temp. sealing property test for rubber cylinders with different lengths. The actual setting principle of the packer can be simulated, and the sealing performance test of high temperature, high pressure and the like can be performed on the rubber cylinder.
However, the above device does not meet the test requirements of the cartridge under the influence of peristaltic movements.
The compression type packer rubber experimental device disclosed in the patent application number CN201410634682.1 can simulate working processes such as setting, deblocking, pressure bearing, packing and the like of the compression type packer rubber, so that references are provided for packer and rubber selection and optimization.
However, the above device does not meet the test requirements of the cartridge under the influence of peristaltic movements.
The patent application number CN201520122698.4 discloses a test detection device of a high-temperature packer rubber, which can evaluate the mechanical property and the sealing property of the packer rubber. In the test process, the rubber cylinder is heated in a thermal convection mode, so that the rubber cylinder is heated uniformly and is always in a high-temperature environment.
However, the above device does not meet the test requirements of the cartridge under the influence of peristaltic movements.
At present, the sealing performance of the packer rubber under the influence of peristaltic motion also lacks necessary test means and reliable test data, and a sealing performance test device of the packer rubber under the peristaltic motion condition needs to be developed.
Disclosure of Invention
The utility model aims to provide a peristaltic test device and a peristaltic test method for a packer rubber, which can simulate the peristaltic motion of the packer rubber and test the sealing performance of the packer rubber under the condition of peristaltic influence, and solve the sealing test problem of the packer rubber under the condition of peristaltic motion. A test device with peristaltic influence is provided for a packer rubber cylinder before well entry, and reliable test data are provided.
The technical scheme of the utility model is as follows:
the packer rubber peristaltic test device comprises a central tube and an outer tube, wherein a pressure test connector is arranged in the outer tube, and the packer rubber peristaltic test device comprises:
the upper part of the central tube is provided with a horseshoe-shaped thread, the lower end of the horseshoe-shaped thread is connected with the locking baffle ring, and the outer diameter of the locking baffle ring after connection is larger than that of the central tube;
the baffle ring is connected with the setting pressure ring and is arranged on the upper part of the central tube through a lock ring which is in threaded connection with the upper part of the central tube in a threaded manner;
an adjusting ring, a rubber cylinder assembly and a supporting ring are arranged in the annular space of the central tube and the outer cylinder and between the setting pressure ring and the locking baffle ring, and the upper joint, the outer cylinder and the lower joint are connected through threads in sequence, and the supporting ring is arranged in the lower joint;
an upper sealing ring is arranged between the upper part of the outer cylinder and the setting pressure ring, and a lower sealing ring is arranged between the lower part of the outer cylinder and the supporting ring;
the pressure test joints in the outer cylinder are provided with two upper pressure test joints and lower pressure test joints respectively.
Preferably, the length of the horseshoe buckle-shaped thread section on the upper part of the central tube is larger than the distance of the rubber cylinder in the rubber cylinder assembly for compressing and descending, the lower end of the central tube is provided with a locking baffle ring assembly step, the outer wall of the tube body below the locking baffle ring assembly step can be in threaded connection with the locking baffle ring or is connected with the locking baffle ring through a fixing screw, and the upper end face of the locking baffle ring after the threads or the fixing screw are connected is flush with the locking baffle ring assembly step.
Preferably, the locking ring is provided with a horseshoe-shaped internal thread and is an open ring, and a longitudinal through groove or an oblique through groove is formed in the body of the locking ring 1-3.
Preferably, the inner circle of the upper end of the setting pressure ring is provided with a lock ring installation step, the outer circle of the setting pressure ring is provided with external threads which can be connected with the baffle ring, and the lower end of the setting pressure ring is provided with at least one seal ring.
Preferably, the lock ring is arranged in a lock ring installation step at the upper end of the setting pressure ring, and after the lock ring is in threaded connection with the horseshoe buckle in the central tube, the baffle ring is in threaded connection with the setting pressure ring and seals the lock ring between the lock ring installation step of the setting pressure ring and the central tube.
Preferably, the outer diameter of the adjusting ring is smaller than the inner diameter of the outer cylinder and larger than the non-compression outer diameter of the rubber cylinder, and the adjusting ring arranged above the rubber cylinder assembly is set to be more than one.
Preferably, the annulus between the outer barrel and the central tube is consistent with the annulus between the downhole oil pipe and the casing.
Preferably, sealing ring mounting steps are arranged at two ends of the inner cavity of the outer cylinder and can respectively limit the upper sealing ring and the lower sealing ring to move downwards and upwards; and the inner circles and the outer circles of the upper sealing ring and the lower sealing ring are respectively provided with a sealing ring.
Preferably, the outer diameter of the supporting ring is large and small from top to bottom, a sealing ring is arranged at the upper part of the inner circle, and the small outer diameter section of the supporting ring is matched with the inner hole of the lower sealing ring in the outer cylinder; the upper pressure test connector in the outer cylinder is arranged above the rubber cylinder assembly.
The test method applied to the packer rubber peristaltic test device comprises the following steps: A. the packer rubber peristaltic test device is arranged below a pressure transmission cylinder of the loading equipment, the pressure transmission cylinder is pressed at the upper end of the baffle ring, and pressure is applied downwards, so that the test of the setting function of the rubber assembly is realized; B. the upper pressure test connector and the lower pressure test connector are connected with a pressurizing pipeline, the pressurizing pipeline is connected with a pressure test pump, and the pressurizing pipeline is respectively pressurized from the upper pressure test connector and the lower pressure test connector, so that the sealing effect test of the rubber cylinder assembly on the premise of peristaltic movement can be realized; C. and (3) repeating the operation of the step B, so that the sealing life test of the rubber cylinder assembly under the peristaltic condition can be completed.
Preferably, after the packing element subassembly in the packer packing element peristaltic test device is accomplished and is set, put into the thermostated container with peristaltic test device and through last pressure testing joint and lower pressure testing joint respectively with capillary pressure line and electronic pressure testing pump connection the outside capillary pressure line that every and electronic pressure testing pump of thermostated container are connected installs manometer and stop valve, can realize packing element subassembly high temperature sealing performance test under the peristaltic condition.
Compared with the prior art, the utility model has the following remarkable use effects: in the device, the lock ring connected to the upper part is connected with the central tube through the button-shaped screw thread, so that the setting pressure ring can be driven to lower the rubber cylinder assembly for setting. The outer cylinder is provided with two pressure test joints, and when the upper pressure test joint is used for testing the rubber cylinder assembly arranged outside the central tube under the peristaltic condition, the pressurized pressure can push all the assemblies connected outside the central tube to move downwards along the upper sealing ring and the lower sealing ring in the outer cylinder. When the rubber cylinder assembly arranged outside the central tube is tested under the peristaltic condition through the lower pressure testing joint at the lower part of the outer cylinder, the pressurized pressure can push all the assemblies connected outside the central tube to move upwards along the upper sealing ring and the lower sealing ring in the outer cylinder. And (3) finishing the sealing effect test of the upward and downward pressurizing test rubber cylinder assembly under the peristaltic influence, and providing reliable sealing test data for the rubber cylinder entering the well.
By utilizing the device, the peristaltic working condition of the rubber cylinder in the packer can be simulated, and the current situation that the rubber cylinder of the packer does not have peristaltic working condition test equipment is filled. The sealing pressure test of the rubber cylinder, the normal temperature and high temperature sealing performance of the rubber cylinder assembly under peristaltic conditions and the sealing service life of the rubber cylinder under peristaltic conditions can be completed.
The device is convenient to disassemble and assemble, does not need special equipment for deblocking, can release the setting pressure manually by disassembling the locking baffle ring to finish deblocking of the rubber cylinder assembly, is simple to operate, has high working efficiency, and has remarkable use effect.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
fig. 1 is a schematic view of the structure of the device of the present utility model.
Fig. 2 is a schematic view of the working state of the device of the utility model after setting.
FIG. 3 is a schematic representation of the operation of the device of the present utility model in performing a peristaltic test.
In the figure: the pressure-transmitting device comprises a central tube 1-1, a baffle ring 1-2, a lock ring 1-3, a setting pressure ring 1-4, an upper joint 1-5, an upper seal ring 1-6, an adjusting ring 1-7, an upper pressure-testing joint 1-8, an outer tube 1-9, a rubber cylinder 1-10, a spacer ring 1-11, a supporting ring 1-12, a lower pressure-testing joint 1-13, a lower seal ring 1-14, a lower joint 1-15, a locking baffle ring 1-16 and a pressure-transmitting cylinder 2-1.
Detailed Description
The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present utility model. The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 3, the packer rubber peristaltic test device comprises a central tube 1-1 and an outer tube 1-9, wherein a pressure test connector is arranged in the outer tube 1-9, and the pressure test connector comprises: the upper part of the central tube 1-1 is provided with a button-shaped thread, the lower end of the button-shaped thread is connected with the locking baffle ring 1-16, and the outer diameter of the locking baffle ring 1-16 after the connection is larger than the outer diameter of the central tube 1-1; the baffle ring 1-2 is connected with the setting compression ring 1-4 and is arranged on the upper part of the central tube 1-1 through a locking ring 1-3 which is in threaded connection with the upper part of the central tube 1-1 in a button shape; an adjusting ring 1-7, a rubber cylinder assembly and a supporting ring 1-12 are arranged in the annular space of the central tube 1-1 and the outer cylinder 1-9 and between the setting compression ring 1-4 and the locking baffle ring 1-16, the upper joint 1-5, the outer cylinder 1-9 and the lower joint 1-15 are connected sequentially through threads, and the supporting ring 1-12 is arranged in the lower joint 1-15; an upper sealing ring 1-6 is arranged between the upper part of the outer cylinder 1-9 and the setting compression ring 1-4, and a lower sealing ring 1-14 is arranged between the lower part of the outer cylinder 1-9 and the supporting ring 1-12; the pressure test joints in the outer cylinder 1-9 are provided with two upper pressure test joints 1-8 and lower pressure test joints 1-13 respectively.
The rubber cylinder assembly consists of rubber cylinders 1-10 and spacing rings 1-11, wherein the spacing rings 1-11 are installed between the rubber cylinders 1-10 at intervals and on two sides. The sealing effect test of the rubber cylinder assembly under the peristaltic condition can be realized through the upper pressure test connector 1-8 and the lower pressure test connector 1-13 in the device; the setting effect test of the rubber cylinder assembly can be realized by downwards pressurizing the upper end of the baffle ring 1-2.
After the device is applied with pressure downwards by a loading device from the baffle ring 1-2 outside the central tube 1-1, the outer diameter of the locking baffle ring 1-16 after being connected with the central tube 1-1 is larger than the outer diameter of the central tube 1-1, the locking baffle ring 1-16 blocks the descending channel of the supporting ring 1-12, the rubber cylinder assembly and the adjusting ring 1-7, and under the pressure applied by the loading device, the baffle ring 1-2 moves downwards and drives the setting pressure ring 1-4 and the adjusting ring 1-7 to move downwards until the sealing pressure ring is compressed to the rubber cylinder assembly to seal the annular space between the outer cylinder 1-9 and the central tube 1-1, so that the setting effect test of the rubber cylinder assembly is realized. In the process, the baffle ring 1-2 also drives the lock ring 1-3 to synchronously move downwards, and after the annular space between the central tube 1-1 and the outer tube 1-9 is sealed by the rubber cylinder assembly, the lock ring 1-3 also stops moving downwards, and the lock ring 1-3 can be locked due to the fact that the lock ring 1-3 is connected with the central tube 1-1 through the button-shaped screw threads. The lock ring 1-3 can not be retracted, the retraction of the setting compression ring 1-4 and the adjusting ring 1-7 is prevented, and the setting force of the rubber cylinder assembly is maintained.
Referring to fig. 2, after the packing element assembly is set, an upper pressurizing annulus and a lower pressurizing annulus are formed between the central tube 1-1 and the outer tube 1-9, the upper pressurizing annulus is formed by the setting pressure ring 1-4, the upper sealing ring 1-6, the packing element assembly and the outer tube 1-9, and the lower pressurizing annulus is formed by the supporting ring 1-12, the packing element assembly, the lower sealing ring 1-14 and the outer tube 1-9.
After two pressurized annular spaces between the central tube 1-1 and the outer tube 1-9 are formed, the pressurized test rubber tube assembly can be pressurized to test the sealing effect of the rubber tube assembly under the peristaltic influence after being connected with a pressure testing pump through the upper pressure testing connector 1-8 and the lower pressure testing connector 1-13, and reliable sealing test data are provided for the rubber tube 1-10 to enter the well.
On the basis of the first embodiment, the present utility model also has the following embodiments: one preferred embodiment is: the length of the horseshoe buckle-shaped thread section on the upper portion of the central tube 1-1 is larger than the compression descending distance of the rubber cylinder 1-10 in the rubber cylinder assembly, a locking baffle ring assembly step is arranged at the lower end of the central tube 1-1, the outer wall of the tube body below the locking baffle ring assembly step can be connected with the locking baffle ring 1-16 in a threaded mode or connected through a fixing screw, the upper end face of the locking baffle ring 1-16 after the threads or the fixing screw are connected is flush with the locking baffle ring assembly step, and loading support is provided for the rubber cylinder assembly above. When the fixing screws are connected, the fixing screws can be radially connected between the locking baffle ring 1-16 and the central tube 1-1.
One preferred embodiment is: the locking ring 1-3 is provided with a horseshoe-shaped internal thread and is an open ring, and the body of the locking ring 1-3 is provided with a longitudinal through groove or an oblique through groove, so that the locking ring 1-3 has a certain shrinkage force, can elastically deform along the radial direction of the central tube 1-1, and can only move downwards along the horseshoe-shaped locking thread of the outer wall of the central tube 1-1.
One preferred embodiment is: the inner circle of the upper end of the setting compression ring 1-4 is provided with a lock ring installation step, the outer circle of the setting compression ring is provided with external threads which can be connected with the baffle ring 1-2, and the lower end of the setting compression ring 1-4 is provided with at least one seal ring.
One preferred embodiment is: the locking ring 1-3 is arranged in a locking ring installation step at the upper end of the setting press ring 1-4, and after the locking ring 1-3 is in threaded connection with a horseshoe buckle in the central tube 1-1, the baffle ring 1-2 is in threaded connection with the setting press ring 1-4 and seals the locking ring 1-3 between the locking ring installation step of the setting press ring 1-4 and the central tube 1-1. The locking ring 1-3 is sleeved at the upper end of the central tube 1-1, is positioned in an annulus between the setting press ring 1-4 and the central tube 1-1, and the lower end face of the locking ring 1-3 is limited by a locking ring installation step at the upper end of the setting press ring 1-4. The baffle ring 1-2 is connected to the upper part of the setting compression ring 1-4 through threads and forms upward limit for the locking ring 1-3.
One preferred embodiment is: the outer diameter of the adjusting ring 1-7 is smaller than the inner diameter of the outer cylinder 1-9 and is larger than the non-compression outer diameter of the rubber cylinder 1-10, and the adjusting ring 1-7 arranged above the rubber cylinder assembly is set to be more than one. The adjusting rings 1-7 can be a plurality of adjusting rings for adjusting the position of the rubber cylinder assembly outside the central tube 1-1 and the installation height of the rubber cylinder assembly.
One preferred embodiment is: the annulus size between the outer cylinder 1-9 and the central tube 1-1 is consistent with the annulus size between the underground oil pipe and the casing. That is, to simulate the working environment of the packing element assembly downhole, the inner diameters of the outer cylinders 1-9 are in line with the inner diameter of the downhole casing.
One preferred embodiment is: sealing ring mounting steps are arranged at two ends of an inner cavity of the outer cylinder 1-9 and can respectively limit the upper sealing ring 1-6 and the lower sealing ring 1-14 to move downwards and upwards; the inner circles and the outer circles of the upper sealing ring 1-6 and the lower sealing ring 1-14 are respectively provided with a sealing ring.
One preferred embodiment is: the outer diameter of the supporting ring 1-12 is large and small from top to bottom, a sealing ring is arranged on the upper part of the inner circle, and the small outer diameter section of the supporting ring 1-12 is matched with the inner hole of the lower sealing ring 1-14 in the outer cylinder 1-9 and is used for completing the test of the upper peristaltic condition and the lower peristaltic condition of the rubber cylinder assembly; the upper pressure test joint 1-8 in the outer cylinder 1-9 is arranged above the rubber cylinder component. When the rubber tube assembly is compressed and descends to form an upper pressurizing annular space, the rubber tube assembly is allowed to creep downwards through the upper pressure testing connectors 1-8, and the test of the rubber tube assembly under the downward peristaltic condition is completed. The upper pressure test joint 1-8 is arranged at the upper part of the outer cylinder 1-9 and is opposite to the compressed upper pressurizing annular space, and the upper pressurizing annular space is composed of a descending setting compression ring 1-4, the outer cylinder 1-9 and a rubber cylinder assembly.
The test method applied to the packer rubber peristaltic test device comprises the following steps: A. the peristaltic test device of the rubber sleeve of the packer is arranged below the pressure transmission cylinder 2-1 of the loading equipment, the pressure transmission cylinder 2-1 is pressed at the upper end of the baffle ring 1-2, and pressure is applied downwards, so that the test of the setting function of the rubber sleeve assembly is realized；The test not only realizes the test of the setting function of the rubber cylinder assembly, but also forms an upper pressurizing annular space and a lower pressurizing annular space above and below the rubber cylinder assembly.
B. The upper pressure test connector 1-8 and the lower pressure test connector 1-13 are connected with a pressurizing pipeline, the pressurizing pipeline is connected with a pressure test pump, and pressurizing is carried out from the upper pressure test connector 1-8 and the lower pressure test connector 1-13 respectively, so that the sealing effect test of the rubber cylinder assembly under the precondition of peristaltic motion can be realized. After two pressurized annular spaces between the central tube 1-1 and the outer tube 1-9 are formed, the upper pressure testing connector 1-8 and the lower pressure testing connector 1-13 are connected with a pressure testing pump through a pressure testing pipeline or a capillary tube and then pressurized, and the sealing effect test of the rubber tube assembly is carried out at normal temperature under the influence of peristaltic motion, so that reliable sealing test data are provided for the rubber tube 1-10 to enter the well.
When the normal-temperature sealing performance test is carried out on the rubber cylinder assembly under the peristaltic condition, the pressurizing pipeline is connected with the upper pressure testing joint 1-8, when the upper pressurizing annular space is pressurized by the pressure testing pump, the pressure acts on the upper end face of the rubber cylinder 1-10 in the upper pressurizing annular space to form downward thrust and drive the baffle ring 1-2, the lock ring 1-3 and the setting pressure ring 1-4 to move downwards along the upper joint 1-5 and the upper sealing ring 1-6 until the step of the large-diameter section of the supporting ring 1-12 is contacted with the lower sealing ring 1-14, the downward peristaltic movement of the rubber cylinder assembly is completed, and meanwhile, the pressure difference resistance after the peristaltic movement of the rubber cylinder 1-10 is tested. And similarly, connecting a pressurizing pipeline with the lower pressure testing joint 1-13, pressurizing the lower pressurizing annular space through a pressure testing pump, enabling pressure to act on the lower end face of the rubber cylinder 1-10 in the lower pressurizing annular space to form upward thrust, driving all components which are connected outside the central tube 1-1 to move upwards along the upper sealing ring 1-6 and the lower sealing ring 1-14 in the outer cylinder 1-9 until the upper end face of the adjusting ring 1-7 contacts with the upper sealing ring 1-6, completing upward creeping of the rubber cylinder component, and simultaneously testing the pressure difference resistance after creeping of the rubber cylinder 1-10.
C. And (3) repeating the operation of the step B, so that the sealing life test of the rubber cylinder assembly under the peristaltic condition can be completed.
One preferred embodiment is: after the packing element subassembly in packer packing element peristaltic test device is accomplished and is set, put into the incubator with peristaltic test device and through last pressure testing joint 1-8 and lower pressure testing joint 1-13 respectively with capillary pressurized line and electronic pressure testing pump be connected the outside capillary pressurized line of incubator that every is connected with electronic pressure testing pump is installed manometer and stop valve, can realize packing element subassembly high temperature sealing performance test under the peristaltic condition.
When the high-temperature sealing performance test is carried out on the rubber sleeve component under the peristaltic condition, firstly, a packer rubber sleeve peristaltic test device is installed according to relevant steps of a normal temperature test method, then the packer rubber sleeve peristaltic test device is set, the test device is placed into an incubator, capillary pressurizing pipelines are respectively connected to the outside of the incubator in an upper pressure test joint 1-8 and a lower pressure test joint 1-13, and a pressure gauge and a stop valve are connected to each external capillary pressurizing pipeline and then connected with an electric pressure test pump.
In the experiment, the incubator is started first and heated to the test temperature and the test temperature in the incubator is kept unchanged according to the set test time. And then, respectively testing the pressure resistance and peristaltic sealing performance of the rubber cylinder assembly according to the related steps of the normal temperature test method through a capillary pressurizing pipeline connected to the outside of the incubator.
When the capillary pressurizing pipeline connected with the upper pressure testing connectors 1-8 is subjected to pressurizing test, a stop valve in the pipeline needs to be opened, and the stop valve in the capillary pressurizing pipeline connected with the lower pressure testing connectors 1-13 is closed, and vice versa.
And the sealing life test of the rubber cylinder assembly under the conditions of long-term high temperature and pressure resistance can be carried out by closing all the stop valves in the two capillary pressurizing pipelines.
The device is convenient to disassemble and assemble, special equipment is not needed for deblocking, and the setting pressure can be released by manually disassembling the locking baffle rings 1-16 to finish deblocking of the rubber cylinder assembly.
The embodiments described above are only exemplary embodiments, but the present utility model is not limited to these embodiments, and modifications may be made by those skilled in the art without departing from the spirit and scope of the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and concept of the present utility model should be included in the scope of the present utility model. Therefore, the scope of protection is not limited to the description above.

Claims (11)

1. The peristaltic test device for the packer rubber comprises a central tube (1-1) and an outer tube (1-9), wherein a pressure test connector is arranged in the outer tube (1-9), and is characterized in that: the upper part of the central tube (1-1) is provided with a horseshoe-shaped thread, the lower end of the horseshoe-shaped thread is connected with the locking baffle ring (1-16), and the outer diameter of the locking baffle ring (1-16) after connection is larger than the outer diameter of the central tube (1-1); the baffle ring (1-2) is connected with the setting pressure ring (1-4) and is arranged on the upper part of the central tube (1-1) through a locking ring (1-3) which is in threaded connection with the upper part of the central tube (1-1) in a threaded manner; an adjusting ring (1-7), a rubber cylinder component and a supporting ring (1-12) are arranged in the annular space of the central tube (1-1) and the outer tube (1-9) and between the setting pressure ring (1-4) and the locking baffle ring (1-16), the upper joint (1-5), the outer tube (1-9) and the lower joint (1-15) are connected through threads in sequence, and the supporting ring (1-12) is arranged in the lower joint (1-15); an upper sealing ring (1-6) is arranged between the upper part of the outer cylinder (1-9) and the setting pressure ring (1-4), and a lower sealing ring (1-14) is arranged between the lower part of the outer cylinder (1-9) and the supporting ring (1-12); the pressure test joints in the outer cylinder (1-9) are provided with two upper pressure test joints (1-8) and lower pressure test joints (1-13) respectively.
2. The packer rubber peristaltic test device as claimed in claim 1, wherein the length of the horseshoe-shaped thread section on the upper portion of the central tube (1-1) is larger than the distance of the rubber tube (1-10) in the rubber tube assembly in the compression descending direction, a locking baffle ring assembly step is arranged at the lower end of the central tube (1-1), the outer wall of the tube body below the locking baffle ring assembly step can be in threaded connection with the locking baffle ring (1-16) or connected through a fixing screw, and the upper end face of the locking baffle ring (1-16) after the threads or the fixing screw connection is flush with the locking baffle ring assembly step.
3. The packer rubber peristaltic test device as claimed in claim 1, wherein the lock ring (1-3) is provided with a horseshoe-shaped internal thread and is a split ring, and a longitudinal through groove or an oblique through groove is formed in the body of the lock ring (1-3).
4. The packer rubber peristaltic test device as claimed in claim 1, wherein a lock ring mounting step is arranged in the inner circle of the upper end of the setting pressure ring (1-4), an external thread is arranged on the outer circle of the setting pressure ring and can be connected with the baffle ring (1-2), and at least one sealing ring is arranged at the lower end of the setting pressure ring (1-4).
5. The packer rubber creep test device according to claim 4, in which the lock ring (1-3) is mounted in a lock ring mounting step at the upper end of the setting press ring (1-4), and after the lock ring (1-3) is screwed with a horseshoe buckle in the center tube (1-1), the retainer ring (1-2) is screwed with the setting press ring (1-4) and seals the lock ring (1-3) between the lock ring mounting step of the setting press ring (1-4) and the center tube (1-1).
6. The packer rubber peristaltic test device as claimed in claim 1, wherein the outer diameter of the adjusting ring (1-7) is smaller than the inner diameter of the outer cylinder (1-9) and larger than the non-compressed outer diameter of the rubber cylinder (1-10), and the adjusting ring (1-7) arranged above the rubber cylinder assembly is set to more than one.
7. The packer rubber creep test device according to any one of claims 1 to 6, in which the size of the annulus between the outer cylinder (1-9) and the base pipe (1-1) corresponds to the size of the annulus between the downhole tubing and the casing.
8. The packer rubber peristaltic test device as claimed in claim 7, wherein sealing ring mounting steps are arranged at both ends of the inner cavity of the outer cylinder (1-9) and can respectively limit the upper sealing ring (1-6) and the lower sealing ring (1-14) to move downwards and upwards; the inner circles and the outer circles of the upper sealing rings (1-6) and the lower sealing rings (1-14) are respectively provided with a sealing ring.
9. The packer rubber peristaltic test device as claimed in claim 8, wherein the outer diameter of the support ring (1-12) is large and small at the top and is provided with a sealing ring at the top of the inner circle, and the small outer diameter section of the support ring (1-12) is matched with the inner hole of the lower sealing ring (1-14) in the outer cylinder (1-9); the upper pressure test connector (1-8) in the outer barrel (1-9) is arranged above the rubber barrel component.
10. The testing method applied to the packer rubber peristaltic testing device as claimed in claim 9, comprising the following steps: A. the peristaltic test device of the rubber cylinder of the packer is arranged below a pressure transmission cylinder (2-1) of the loading equipment, the pressure transmission cylinder (2-1) is pressed at the upper end of the baffle ring (1-2) and pressure is applied downwards, so that the test of the setting function of the rubber cylinder assembly is realized; B. the upper pressure test joint (1-8) and the lower pressure test joint (1-13) are connected with a pressurizing pipeline, the pressurizing pipeline is connected with a pressure test pump, and the pressurizing pipeline is respectively pressurized from the upper pressure test joint (1-8) and the lower pressure test joint (1-13), so that the sealing effect test of the rubber cylinder assembly under the precondition of peristaltic movement can be realized; C. and (3) repeating the operation of the step B, so that the sealing life test of the rubber cylinder assembly under the peristaltic condition can be completed.
11. The testing method of the peristaltic testing device of the packer rubber tube, as set forth in claim 10, characterized in that after the packing element assembly in the peristaltic testing device of the packer rubber tube is set, the peristaltic testing device is placed in an incubator and is respectively connected with a capillary pressurizing pipeline and an electric pressure testing pump through an upper pressure testing joint (1-8) and a lower pressure testing joint (1-13), and a pressure gauge and a stop valve are installed in each capillary pressurizing pipeline connected with the electric pressure testing pump outside the incubator, so that the high-temperature sealing performance test of the packing element assembly under the peristaltic condition can be realized.
CN202211196343.0A 2022-09-29 2022-09-29 Packer rubber tube peristaltic test device and test method Pending CN117825017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211196343.0A CN117825017A (en) 2022-09-29 2022-09-29 Packer rubber tube peristaltic test device and test method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211196343.0A CN117825017A (en) 2022-09-29 2022-09-29 Packer rubber tube peristaltic test device and test method

Publications (1)

Publication Number Publication Date
CN117825017A true CN117825017A (en) 2024-04-05

Family

ID=90504882

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211196343.0A Pending CN117825017A (en) 2022-09-29 2022-09-29 Packer rubber tube peristaltic test device and test method

Country Status (1)

Country Link
CN (1) CN117825017A (en)

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