CN113804552A - Pipe column load testing tool - Google Patents

Pipe column load testing tool Download PDF

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Publication number
CN113804552A
CN113804552A CN202010556371.3A CN202010556371A CN113804552A CN 113804552 A CN113804552 A CN 113804552A CN 202010556371 A CN202010556371 A CN 202010556371A CN 113804552 A CN113804552 A CN 113804552A
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CN
China
Prior art keywords
strain
pressure sensor
cylinder
barrel
testing tool
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Pending
Application number
CN202010556371.3A
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Chinese (zh)
Inventor
李玉飞
张华礼
唐庚
张健涛
张�林
罗伟
王珏皓
田璐
朱达江
秦山
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Petrochina Co Ltd
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Petrochina Co Ltd
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Application filed by Petrochina Co Ltd filed Critical Petrochina Co Ltd
Priority to CN202010556371.3A priority Critical patent/CN113804552A/en
Publication of CN113804552A publication Critical patent/CN113804552A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12—Pressure testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/06—Special adaptations of indicating or recording means
    • G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075—Strain-stress relations or elastic constants
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/0617—Electrical or magnetic indicating, recording or sensing means

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The utility model provides a tubular column load test instrument belongs to the petroleum gas equipment field. The string load testing tool includes: the tube body is a hollow tube-shaped structure with two ends penetrating through, and a strain interlayer cavity is formed in the tube wall of the tube body; electronic module, electronic module is located the intermediate layer intracavity that meets an emergency, electronic module includes axial force sensor, press sensor and external pressure sensor in, axial force sensor is located the middle part in intermediate layer chamber that meets an emergency, press sensor and external pressure sensor in all be located the tip in intermediate layer chamber that meets an emergency, and press sensor and external pressure sensor in between go up the interval arrangement in the circumference of barrel, press sensor's the probe and the inside cavity intercommunication of barrel in, external pressure sensor communicates with the exterior space of barrel. The method and the system can provide accurate guidance for oil testing construction.

Description

Pipe column load testing tool
Technical Field
The disclosure belongs to the field of petroleum gas equipment, and particularly relates to a pipe column load testing tool.
Background
The test well is drilled during petroleum construction, and the lower tubular column of the test well is not only a passage for connecting the stratum with the ground, but also a bridge for load transmission. Before the oil testing construction, in order to reduce the probability of damage of the pipe column due to exceeding the use limit of the pipe column, the stratum is usually analyzed by combining geological information, and the axial force, the internal fluid pressure and the external fluid pressure which can be applied to the pipe column are obtained. And then, judging whether the pipe column is damaged or not according to the analysis result.
However, due to the large uncertainty of the formation, the analyzed result is not completely reliable, and if the analyzed result is wrong, the tubular string may still be damaged.
Disclosure of Invention
The embodiment of the disclosure provides a pipe column load testing tool, which can provide accurate guidance for oil testing construction. The technical scheme is as follows:
the disclosed embodiment provides a tubular column load test tool, tubular column load test tool includes:
the tube body is a hollow tube-shaped structure with two ends penetrating through, and a strain interlayer cavity is formed in the tube wall of the tube body;
the electronic module, the electronic module is located the intermediate layer intracavity that meets an emergency, the electronic module includes axial force sensor, presses sensor and external pressure sensor in, axial force sensor is located the middle part in intermediate layer chamber that meets an emergency, press the sensor in with external pressure sensor all is located the tip in intermediate layer chamber that meets an emergency, just press the sensor in with arrange at the circumference interval of barrel between the external pressure sensor, press the sensor probe in with the inside cavity intercommunication of barrel, external pressure sensor with the exterior space intercommunication of barrel.
Optionally, the barrel comprises an outer barrel and a strain barrel, the outer barrel is coaxially sleeved outside the strain barrel, and the strain interlayer cavity is formed between the inner wall of the outer barrel and the outer wall of the strain barrel.
Optionally, the outer cylinder and the strain cylinder are in threaded fit, a positioning retaining ring is arranged on the outer wall of the strain cylinder, a first end of the outer cylinder abuts against the positioning retaining ring, a second end of the outer cylinder is provided with a positioning screw, and the positioning screw is inserted into the strain cylinder along the radial direction of the strain cylinder.
Optionally, the cylinder further comprises an inner cylinder, and the inner cylinder is coaxially inserted into the strain cylinder.
Optionally, the strain cylinder is provided with a first detection hole, the first detection hole communicates with the hollow interior of the cylinder body and the strain interlayer cavity, and a probe of the internal pressure sensor is located in the first detection hole.
Optionally, a first sealing sleeve is arranged in the first detection hole, the first sealing sleeve is sleeved on the probe of the internal pressure sensor, and the first sealing sleeve is clamped between the probe of the internal pressure sensor and the inner wall of the first detection hole.
Optionally, a second detection hole is formed in the strain cylinder, the second detection hole communicates with the outer space of the cylinder and the strain interlayer cavity, and a probe of the external pressure sensor is located in the second detection hole.
Optionally, a second sealing sleeve is arranged in the second detection hole, the second sealing sleeve is sleeved on the probe of the external pressure sensor, and the second sealing sleeve is clamped between the probe of the external pressure sensor and the inner wall of the second detection hole.
Optionally, the cylinder further comprises a plurality of baffles, each baffle is located in the strain interlayer cavity, the baffles are circumferentially spaced along the axis of the cylinder, and the internal pressure sensor and the external pressure sensor are spaced by the baffles.
Optionally, the cylinder is a 40CrNiMoA alloy steel structural member.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
through the pipe column load testing tool provided by the embodiment of the disclosure, the load of the pipe column during oil testing construction can be tested. Utilize the tubular column to transfer the tubular column load test instrument to preset position, because the inside of barrel has the intermediate layer chamber of meeting an emergency, and the electronic module is arranged in the intermediate layer chamber of meeting an emergency, so can effectual realization to the protection of electronic module, avoided electronic module to be damaged by the high temperature and the high pressure environment in the pit. After the tubular column load testing tool is put to a preset position, the axial load of the barrel can be accurately detected by the axial force sensor, and the axial load is the axial force which can be received by the tubular column during oil testing construction. The internal pressure sensor can accurately detect the pressure in the air in the barrel, and the pressure is the internal fluid pressure which can be received by the pipe column during oil testing construction. The external pressure sensor can accurately detect the pressure in the external space of the cylinder, and the pressure is the external fluid pressure applied to the tubular column during oil testing construction.
That is to say, through the tubular column load testing instrument that this disclosed embodiment provided, the axial force, interior fluid pressure, the outer fluid pressure that receive of detection tubular column when the formation testing construction that can be accurate to for the formation testing construction provides accurate guidance, make the workman can use suitable tubular column, avoided the damage of tubular column, be favorable to developing smoothly of formation testing construction.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a first cross-sectional view of a tubular string load testing tool provided by an embodiment of the present disclosure;
FIG. 2 is a second directional, partial cross-sectional view of a string load testing tool provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of the use of a string load testing tool provided by embodiments of the present disclosure.
The symbols in the drawings represent the following meanings:
1. a barrel; 11. a strain interlayer cavity; 12. an outer cylinder; 13. a strain cylinder; 131. positioning a retainer ring; 132. a set screw; 133. a first detection hole; 134. a first seal cartridge; 135. a second detection hole; 136. a second seal cartridge; 14. a seal ring; 15. a baffle plate; 16. an inner barrel;
2. an electronic module; 21. an axial force sensor; 22. an internal pressure sensor; 23. an external pressure sensor; 24. a temperature compensation plate; 25. a secondary instrument; 26. a battery;
110. a first tubular string load testing tool; 120. a second tubular string load testing tool; 210. a first tubular string; 220. a second tubular string; 230. a third tubular string; 300. a sleeve; 400. perforating; 500. and (4) a packer.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The embodiment of the disclosure provides a pipe column load testing tool, which can accurately detect the axial force, the internal fluid pressure and the external fluid pressure of a pipe column during oil testing construction, thereby providing accurate guidance for the oil testing construction, avoiding the damage of the pipe column, saving the expense of the oil testing construction and saving the time wasted by replacing the pipe column.
Fig. 1 is a first cross-sectional view of the string load testing tool, and the string load testing tool is described below with reference to fig. 1:
the string load testing tool comprises a barrel 1 and an electronic module 2. The barrel 1 is used for carrying the electronic module 2, so as to provide a mounting base for the electronic module 2. In addition, the barrel 1 also plays a role in protecting the electronic module 2, so that the electronic module 2 can normally work in a high-temperature and high-pressure underground well. And the electronic module 2 is used for detecting and storing various underground parameters, thereby providing accurate guidance for oil testing construction.
The cylinder 1 is a hollow cylinder structure with two ends penetrating, and a strain interlayer cavity 11 is arranged in the cylinder wall of the cylinder 1.
Electronic module 2 is located the intermediate layer chamber 11 that meets an emergency, electronic module 2 includes axial force sensor 21, interior pressure sensor 22 and external pressure sensor 23 (see fig. 2), axial force sensor 21 is located the middle part of the intermediate layer chamber 11 that meets an emergency, interior pressure sensor 22 and external pressure sensor 23 all are located the tip in the intermediate layer chamber 11 that meets an emergency, and interior pressure sensor 22 and external pressure sensor 23 between the interval arrangement in the circumference of barrel 1, interior pressure sensor 22's probe and the inside cavity intercommunication of barrel 1, external pressure sensor 23 communicates with the exterior space of barrel 1.
It should be noted that fig. 2 is a second-direction partial sectional view of the pipe string load testing tool. Since the internal pressure sensors 22 and the external pressure sensors 23 are arranged at intervals in the circumferential direction of the cylinder 1, and the cross sections of fig. 1 and 2 are not the same, only the internal pressure sensors 22 can be illustrated in fig. 1. Fig. 2 is therefore used to supplement the arrangement of the external pressure sensor 23.
Through the pipe column load testing tool provided by the embodiment of the disclosure, the load of the pipe column during oil testing construction can be tested. Utilize the tubular column to put the predetermined position under the tubular column load test instrument, because the inside of barrel 1 has the intermediate layer chamber 11 that meets an emergency, and electronic module 2 is arranged in the intermediate layer chamber 11 that meets an emergency, so can effectual realization to electronic module 2's protection, avoided electronic module 2 to be damaged by the high temperature and high pressure environment in the pit.
After the tubular column load testing tool is lowered to a preset position, the axial force sensor 21 can accurately detect the axial load applied to the barrel 1, and the axial load is the axial force applied to the tubular column during oil testing construction. The internal pressure sensor 22 can accurately detect the pressure in the air in the interior of the cylinder 1, that is, the internal fluid pressure to which the column is subjected during the test oil construction. The external pressure sensor 23 can accurately detect the pressure in the external space of the cylinder 1, which is the external fluid pressure applied to the pipe column during the oil testing construction.
After the parameters are detected, the parameters can be temporarily stored in a memory, and after the tubular column load testing tool is taken out from the underground, an operator reads the parameters through a computer, so that the operator can conveniently select a proper tubular column according to the parameters.
That is to say, through the tubular column load testing instrument that this disclosed embodiment provided, the axial force, interior fluid pressure, the outer fluid pressure that receive of detection tubular column when the formation testing construction that can be accurate to for the formation testing construction provides accurate guidance, make the workman can use suitable tubular column, avoided the damage of tubular column, be favorable to developing smoothly of formation testing construction.
In this embodiment, the cylinder 1 is a 40CrNiMoA alloy steel structural member.
Because many domestic deep wells with high temperature and high pressure contain a large amount of H2S gas corrodes the string load testing tool, and the sealing performance and integrity of the string load testing tool are affected. Therefore, the working performance of the tubular column load testing tool is affected if the tubular column load testing tool is light, and the tubular column load testing tool cannot work if the tubular column load testing tool is heavy. Therefore, the barrel 1 is designed into a 40CrNiMoA alloy steel structural part, so that H can be effectively avoided2And S, corroding by gas.
Optionally, the hardness value of the cylinder body 1 is not greater than HRC25 through quenching and hardness adjusting. Therefore, the sulfur-proof capability of the tubular column load testing tool is ensured, and the requirement of the barrel 1 on good stress-strain characteristic is met.
With continued reference to fig. 1, the cartridge 1 will now be described:
in the embodiment, the cylinder 1 comprises an outer cylinder 12 and a strain cylinder 13, the outer cylinder 12 is coaxially sleeved outside the strain cylinder 13, and a strain interlayer cavity 11 is formed between the inner wall of the outer cylinder 12 and the outer wall of the strain cylinder 13.
In the above implementation, the strain cylinder 13 is used for carrying the electronic module 2, and provides a mounting base for the electronic module 2. The outer cylinder 12 and the strain cylinder 13 together form a strain interlayer cavity 11 for accommodating the electronic module 2, thereby providing a protection space for the electronic module 2.
In addition, in order to facilitate the arrangement of the electronic module 2, the strain interlayer cavity 11 can be an annular cavity, so that the electronic module 2 can be arranged along the circumferential direction of the barrel 1, thereby avoiding the mutual influence between the electronic modules 2 and improving the reliability of the electronic assembly 2.
Optionally, the middle part of the outer wall of the strain cylinder 13 is recessed inwards, and the outer cylinder 12 is located at the recessed part of the outer wall of the strain cylinder 13.
So set up, can utilize the sunken on the outer wall of a section of thick bamboo 13 that meets an emergency, form the great sandwich cavity 11 that meets an emergency in space, moreover can not appear because of barrel 1 outwards protrudes too much, and lead to the problem that the removal of tubular column load test tool in the pit received the influence.
In order to ensure a good assembly of the electronic module 2 during the actual manufacturing process for the string load testing tool, the thickness of the strain clamp chamber 11 in the radial direction of the cylinder 1 is not less than 20 mm.
In addition to carrying the electronics module 2, the strain gauge 13 is also used in connection with the pipe string and test sub to enable lowering and removal of the pipe string load testing tool.
For connecting with a pipe column and a test nipple, the top end (left end in fig. 1) of the strain cylinder 13 is a female buckle, and the bottom end (right end in fig. 1) of the strain cylinder 13 is a male buckle. Both were of the 27/8 "tubing buckle type that was hermetically sealed. Of course, if the string size does not match the strain gage 13, the connection can be made by adding a swage joint.
For the outer barrel 12, in order to enable the column load testing tool provided in this embodiment to be used in a sleeve of size 51/2 "(about 125mm inner diameter), the outer diameter of the outer barrel 12 is no greater than 115 mm. Of course, the size of the outer cylinder 12 can be adjusted accordingly according to the actual situation, and the disclosure is not limited thereto.
In this embodiment, the outer cylinder 12 and the strain cylinder 13 are screw-fitted.
In the above implementation manner, the outer cylinder 12 and the strain cylinder 13 are in threaded fit, so that the outer cylinder 12 and the strain cylinder 13 can be conveniently disassembled and assembled, the strain interlayer cavity 11 can be conveniently opened, the electronic module 2 can be maintained and replaced, and the use convenience of the tubular column load testing tool is improved.
Optionally, a positioning retaining ring 131 is disposed on an outer wall of the strain cylinder 13, the first end of the outer cylinder 12 abuts against the positioning retaining ring 131, the second end of the outer cylinder 12 has a positioning screw 132, and the positioning screw 132 is inserted into the strain cylinder 13 along a radial direction of the strain cylinder 13.
The positioning retainer ring 131 is used to limit the axial displacement of the outer cylinder 12 on the strain cylinder 13, and avoid unnecessary axial shaking of the outer cylinder 12 on the strain cylinder 13. The set screw 132 is used to limit the rotation of the outer cylinder 12 on the strain cylinder 13, and thus, the outer cylinder 12 is prevented from rotating on the strain cylinder 13 unnecessarily. The positioning of the outer cylinder 12 on the strain cylinder 13 can be effectively realized through the positioning retainer ring 131 and the positioning screw 132, and the stable installation between the outer cylinder 12 and the strain cylinder 13 is ensured.
Illustratively, the outer cylinder 12 is sleeved into the strain cylinder 13 from the bottom end of the strain cylinder 13, so that the top end of the outer cylinder 12 abuts against the positioning retainer 131. The top end inner wall of the outer cylinder 12 is provided with an external thread, the position, close to the positioning check ring 131, on the outer wall of the strain cylinder 13 is provided with an internal thread, and the thread matching between the outer cylinder 12 and the strain cylinder 13 is realized through the matching of the internal thread and the external thread.
When the outer cylinder 12 and the strain cylinder 13 are assembled, the outer cylinder 12 is rotated relative to the strain cylinder 13, the outer cylinder 12 and the strain cylinder 13 are screwed together with the rotation of the outer cylinder 12, and the outer cylinder 12 is gradually moved toward the positioning retainer 131. When the tip of the outer cylinder 12 abuts against the positioning retainer 131, it indicates that the threaded engagement between the outer cylinder 12 and the strain cylinder 13 has been put in place. Thereafter, the set screw 132 is inserted into the strain cylinder 13 through the outer cylinder 12, thereby completing the set fitting between the outer cylinder 12 and the strain cylinder 13. That is, the positioning retainer ring 131 may not only serve to limit the axial displacement of the outer cylinder 12, but also serve to facilitate the worker to judge whether the fitting between the outer cylinder 12 and the strain cylinder 13 is in place.
Optionally, the outer wall of the positioning check ring 131 and the outer wall of the outer cylinder 12 are flush, so that the movement of the string load testing tool in the sleeve can be facilitated, and the interference of the positioning check ring 131 or the outer cylinder 12 with other structures in the well is avoided.
In order to ensure the tightness of the strain interlayer cavity 11, sealing rings 14 are respectively arranged between the inner wall of the top end of the outer cylinder 12 and the outer wall of the strain cylinder 13 and between the inner wall of the bottom end of the outer cylinder 12 and the outer wall of the strain cylinder 13, so that downhole liquid and gas can be effectively prevented from permeating into the strain interlayer cavity 11.
Illustratively, the seal rings 14 at both ends are double O-ring seals. Under the action of external pressure, the outer cylinder 12 compresses the sealing ring 14 inwards, and under the action of internal pressure, the strain cylinder 13 compresses the sealing ring 14 inwards, so that self-tightening sealing of the sealing ring 14 can be realized, and the reliability of the pipe column load testing tool is improved. Of course, the sealing rings 14 at both ends may be three O-ring seals or the like according to actual requirements, which is not limited by the present disclosure.
In this embodiment, the strain cylinder 13 has a first detection hole 133, the first detection hole 133 communicates with the hollow interior of the cylinder body 1 and the strain interlayer cavity 11, and the probe of the internal pressure sensor 22 is located in the first detection hole 133.
In the above implementation, the first detection hole 133 is used to accommodate the probe of the internal pressure sensor 22. In addition, since the first detection hole 133 communicates the hollow interior of the cylinder 1 with the strain interlayer cavity 11, the main body of the internal pressure sensor 22 can be located in the strain interlayer cavity 11, and only the probe of the internal pressure sensor 22 needs to be extended out, so that the internal pressure sensor 22 can be better protected.
Optionally, the first detection hole 133 has a first sealing sleeve 134 therein, the first sealing sleeve 134 is sleeved on the probe of the internal pressure sensor 22, and the first sealing sleeve 134 is sandwiched between the probe of the internal pressure sensor 22 and the inner wall of the first detection hole 133. The first sealing sleeve 134 may be a rubber member to achieve sealing between itself and the first detection hole 133. In addition, the first sealing sleeve 134 may also seal with the first detection hole 133 by means of a sleeved sealing ring.
In the implementation manner, the first sealing sleeve 134 can better seal the first detection hole 133, so that the downhole fluid is prevented from permeating into the strain interlayer cavity 11 through a gap between the first detection hole 133 and the probe of the internal pressure sensor 22, and the tightness of the strain interlayer cavity 11 is better realized.
In order to better fit the first sealing sleeve 134 in the first detection hole 133, the first detection hole 133 has an inner flange at a position close to the hollow inside of the cylinder 1, and an end of the first sealing sleeve 134 may abut against the inner flange. Of course, the inner flange may also act as a stop for the first sealing boot 134.
Referring to fig. 2 again, in the present embodiment, the strain cylinder 13 has a second detection hole 135, the second detection hole 135 communicates with the external space of the cylinder body 1 and the strain clamp chamber 11, and the probe of the external pressure sensor 23 is located in the second detection hole 135.
In the above implementation, the second detection hole 135 is used to accommodate the probe of the external pressure sensor 23. In addition, since the second detection hole 135 communicates the outer space of the cylinder 1 with the strain interlayer cavity 11, the main body of the external pressure sensor 23 can be located in the strain interlayer cavity 11, and only the probe of the external pressure sensor 23 needs to be extended out, so that the external pressure sensor 23 can be better protected.
The second detection hole 135 needs to extend a distance in the axial direction of the strain gauge 13 due to being shielded by the outer cylinder 12. In order to avoid the influence of the second detection hole 135 on the structural strength of the strain gauge 13, the second detection hole 135 extends in a V-shape.
Optionally, the second detection hole 135 is internally provided with a second sealing sleeve 136, the second sealing sleeve 136 is sleeved on the probe of the external pressure sensor 23, and the second sealing sleeve 136 is clamped between the probe of the external pressure sensor 23 and the inner wall of the second detection hole 135. The second sealing sleeve 136 may be a rubber member to seal itself with the second detection hole 135. In addition, the second sealing sleeve 136 may also seal with the second detection hole 135 by means of a sealing ring.
In the above implementation manner, the second sealing sleeve 136 can better seal the second detection hole 135, so that the downhole fluid is prevented from permeating into the strain interlayer cavity 11 through a gap between the second detection hole 135 and the probe of the external pressure sensor 23, and the tightness of the strain interlayer cavity 11 is better realized.
Referring again to fig. 1, in the present embodiment, the cylinder 1 further includes a plurality of baffles 15, each baffle 15 is located in the strain interlayer cavity 11, each baffle 15 is circumferentially spaced along the axis of the cylinder 1, and the internal pressure sensor 22 and the external pressure sensor 23 are spaced by the baffles 15.
In the above implementation, the baffle 15 mainly functions to separate the inner pressure sensor 22 and the outer pressure sensor 23, and prevents the inner pressure sensor 22 and the outer pressure sensor 23 from being affected by each other.
Alternatively, the baffle 15 is an elongated plate, the length direction of the baffle 15 extends along the axial direction of the cylinder 1, and the width direction of the baffle 15 extends along the radial direction of the cylinder 1. The baffle 15 may be riveted to the outer wall of the strain cylinder 13.
In this embodiment, the internal pressure sensor 22 may be located between two adjacent baffles 15, the internal pressure sensor 22 being fixed to the outer wall of the strain cylinder 13. Likewise, an external pressure sensor 23 may be located between two adjacent baffles 15, the external pressure sensor 23 being fixed to the outer wall of the strain cylinder 13. In this case, the baffle 15 mainly functions as a space and a protection.
In other embodiments, the internal pressure sensor 22 may be fixed on the plate surface of one baffle 15, and the external pressure sensor 23 may be fixed on the plate surface of the other baffle 15, and the plate surfaces of the two baffles 15 are arranged oppositely. In this case, the barrier 15 functions not only as a spacer and a protector but also as a base for mounting the internal pressure sensor 22 and the external pressure sensor 23.
In this embodiment, the cylinder 1 further includes an inner cylinder 16, and the inner cylinder 16 is coaxially inserted into the strain cylinder 13.
In the above implementation, the outer wall of the top end of the inner cylinder 16 is provided with an external thread, the inner wall of the strain cylinder 13 is provided with an internal thread, and the inner cylinder 16 and the strain cylinder 13 are assembled together in a threaded mode.
Optionally, the inner diameter of the inner barrel 16 is not less than 40 mm.
The electronic module 2 is described below with reference to fig. 1 and 2:
in this embodiment, the electronic module 2 further includes a temperature compensation plate 24, the temperature compensation plate 24 is located in the strain interlayer cavity 11, the temperature compensation plate 24 is fixed on the outer wall of the strain cylinder 13, and a temperature compensation sheet is attached to the temperature compensation plate 24.
In the implementation mode, the temperature drift generated by temperature change is eliminated by using the temperature compensation sheet through the sum-difference characteristic of the bridge, so that the influence of the temperature change on the axial force sensor 21, the internal pressure sensor 22 and the external pressure sensor 23 is avoided, and the accuracy of the axial force, the internal fluid pressure and the external fluid pressure measured by the tubular column load testing tool is ensured.
In this embodiment, the electronic module 2 further includes a secondary meter 25, the secondary meter 25 is located in the strain interlayer cavity 11, and the secondary meter 25 is fixed on the outer wall of the strain cylinder 13.
In the above implementation, the secondary meter 25 is used to indicate, record or integrate data detected by the axial force sensor 21, the internal pressure sensor 22 and the external pressure sensor 23. After the oil testing construction is finished, the tubular column load testing tool is taken out from the underground, and the data in the secondary instrument 25 is read through a computer.
In this embodiment, the electronic module 2 further includes a battery 26, the battery 26 is located in the strain interlayer cavity 11, and the battery 26 is fixed on the secondary meter 25.
In the above implementation, the battery 26 is used to power the entire electronic module 2.
FIG. 3 is a schematic diagram of the use of the string load testing tool, described below in connection with FIG. 3:
first, two string load testing tools are provided, as a first string load testing tool 110 and a second string load testing tool 120, respectively. The first tubular string load testing tool 110 is installed between the bottom end of the first tubular string 210 and the top end of the second tubular string 220, and the second tubular string load testing tool 120 is installed between the bottom end of the second tubular string 220 and the top end of the third tubular string 230.
Next, the first string load testing tool 110 and the second string load testing tool 120, along with the first string 210, the second string 220, and the third string 230, are run into the casing 300 such that the first string load testing tool 110 is at the wellhead and the second string load testing tool 120 is at the perforation 400 below the packer 500.
The axial force, internal fluid pressure, and external fluid pressure of the tubular string at the wellhead (first tubular string 210) are then detected by the first tubular string load testing tool 110. The axial force, internal fluid pressure, and external fluid pressure of the downhole string (second string 220) are detected by the second string load testing tool 120.
Finally, the first string load testing tool 110 and the second string load testing tool 120, together with the first string 210, the second string 220, and the third string 230, are removed from the casing 300, and the axial force, the internal fluid pressure, and the external fluid pressure detected by the first string load testing tool 110 and the second string load testing tool 120 are read by a computer.
Therefore, the tubular column load testing tool provided by the embodiment of the disclosure can accurately detect the axial force, the internal fluid pressure and the external fluid pressure of the tubular column during the oil testing construction, thereby providing accurate guidance for the oil testing construction, enabling a worker to use a proper tubular column, avoiding the damage of the tubular column and being beneficial to the smooth development of the oil testing construction.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims (10)

1. A tubular string load testing tool, comprising:
the tube body (1) is a hollow tube-shaped structure with two ends penetrating through, and a strain interlayer cavity (11) is formed in the tube wall of the tube body (1);
electronic module (2), electronic module (2) are located in the intermediate layer chamber of meeting an emergency (11), electronic module (2) are including axle force sensor (21), interior pressure sensor (22) and external pressure sensor (23), axle force sensor (21) are located the middle part in intermediate layer chamber of meeting an emergency (11), interior pressure sensor (22) with external pressure sensor (23) all are located the tip in intermediate layer chamber of meeting an emergency (11), just interior pressure sensor (22) with interval arrangement in the circumference of barrel (1) between external pressure sensor (23), the probe of interior pressure sensor (22) with the inside cavity intercommunication of barrel (1), external pressure sensor (23) with the exterior space intercommunication of barrel (1).
2. The string load testing tool according to claim 1, characterized in that the barrel (1) comprises an outer barrel (12) and a strain barrel (13), the outer barrel (12) is coaxially sleeved outside the strain barrel (13), and the strain interlayer cavity (11) is formed between the inner wall of the outer barrel (12) and the outer wall of the strain barrel (13).
3. The string load testing tool according to claim 2, characterized in that the outer cylinder (12) and the strain cylinder (13) are in threaded fit, a positioning check ring (131) is arranged on the outer wall of the strain cylinder (13), a first end of the outer cylinder (12) abuts against the positioning check ring (131), and a second end of the outer cylinder (12) is provided with a positioning screw (132), and the positioning screw (132) is inserted into the strain cylinder (13) along the radial direction of the strain cylinder (13).
4. A string load testing tool according to claim 2, characterized in that the cartridge (1) further comprises an inner cartridge (16), the inner cartridge (16) being coaxially inserted in the strain gauge (13).
5. The string load testing tool according to claim 2, characterized in that the strain cylinder (13) has a first probe hole (133) therein, the first probe hole (133) communicating the inner hollow of the cylinder body (1) and the strain clamp chamber (11), the probe of the internal pressure sensor (22) being located in the first probe hole (133).
6. The string load testing tool of claim 5, characterized in that a first sealing sleeve (134) is provided in the first probe hole (133), the first sealing sleeve (134) is sleeved on the probe of the internal pressure sensor (22), and the first sealing sleeve (134) is sandwiched between the probe of the internal pressure sensor (22) and the inner wall of the first probe hole (133).
7. The string load testing tool according to claim 2, characterized in that the strain cylinder (13) has a second probing hole (135) thereon, the second probing hole (135) communicating the outer space of the cylinder body (1) and the strain clamp chamber (11), the probe of the external pressure sensor (23) being located in the second probing hole (135).
8. The string load testing tool of claim 7, characterized in that a second gland (136) is provided in the second probe hole (135), the second gland (136) is sleeved on the probe of the external pressure sensor (23), and the second gland (136) is sandwiched between the probe of the external pressure sensor (23) and the inner wall of the second probe hole (135).
9. The string load testing tool of any of claims 1-8, wherein the barrel (1) further comprises a plurality of baffles (15), each baffle (15) being located in the strain clamp chamber (11), each baffle (15) being circumferentially spaced along the axis of the barrel (1), the internal pressure sensors (22) and the external pressure sensors (23) being spaced apart by the baffles (15).
10. The tubular string load testing tool of any one of claims 1-8, characterized in that the barrel (1) is a 40CrNiMoA alloy steel structural member.
CN202010556371.3A 2020-06-17 2020-06-17 Pipe column load testing tool Pending CN113804552A (en)

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CN202010556371.3A CN113804552A (en) 2020-06-17 2020-06-17 Pipe column load testing tool

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Application Number Priority Date Filing Date Title
CN202010556371.3A CN113804552A (en) 2020-06-17 2020-06-17 Pipe column load testing tool

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102778311A (en) * 2012-07-23 2012-11-14 北京航空航天大学 Multidimensional radial pressure measuring device of underground sucker rod
CN102900426A (en) * 2012-11-08 2013-01-30 中国石油集团西部钻探工程有限公司 Device for monitoring working parameters of remote measuring type oil testing underground pipe column in real time
CN202869623U (en) * 2012-09-27 2013-04-10 福建省莆田市衡力传感器有限公司 Rail weighbridge sensor
US20160123471A1 (en) * 2014-10-29 2016-05-05 Baker Hughes Incorporated Superelastic nickel-titanium alloy downhole seals, wellbore tools including such seals, and related methods
CN110847883A (en) * 2018-07-24 2020-02-28 中国石油天然气股份有限公司 Wellhead device lifting height prediction method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102778311A (en) * 2012-07-23 2012-11-14 北京航空航天大学 Multidimensional radial pressure measuring device of underground sucker rod
CN202869623U (en) * 2012-09-27 2013-04-10 福建省莆田市衡力传感器有限公司 Rail weighbridge sensor
CN102900426A (en) * 2012-11-08 2013-01-30 中国石油集团西部钻探工程有限公司 Device for monitoring working parameters of remote measuring type oil testing underground pipe column in real time
US20160123471A1 (en) * 2014-10-29 2016-05-05 Baker Hughes Incorporated Superelastic nickel-titanium alloy downhole seals, wellbore tools including such seals, and related methods
CN110847883A (en) * 2018-07-24 2020-02-28 中国石油天然气股份有限公司 Wellhead device lifting height prediction method

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