Hanger for dynamic monitoring of oil field and recovery tool

Abstract

The utility model relates to a hanger and recovery tool for dynamic monitoring of an oil field, and relates to the technical field of oil field monitoring, the hanger and recovery tool for dynamic monitoring of the oil field comprises a hanging module and a recovery module, the hanging module comprises a hanger body, a supporting arm and a driving part, one end of the hanger body is provided with a threaded inner hole for fixing a pressure gauge, and the other end of the hanger body is provided with a conical fishing neck. The multiple supporting arms are distributed in the circumferential direction of the hanger body at intervals, and the driving piece is used for driving the ends of the multiple supporting arms to rotate and extend out of the containing groove; the recycling module is used for being matched with the driving piece to drive the multiple supporting arms to rotate and retract into the containing groove. The suspension device has the advantage that the obstacle crossing ability and the working stability of the suspension device can be improved.

Description

Technical Field

[0001] The present application relates to the field of oilfield monitoring technologies, and particularly to a hanger and recovery tool for oilfield dynamic monitoring. Background Art

[0002] In the complex environment of oilfield dynamic monitoring, especially for the high-precision testing requirements of unstable well testing and systematic well testing, it is crucial to ensure continuous and accurate acquisition of downhole temperature and pressure data. To effectively avoid the well control risks that may be caused by traditional cable transmission methods, it is necessary to use tools to hang a stored high-precision electronic temperature and pressure gauge in the tubing for continuous monitoring and data acquisition. After the acquisition is completed, it is also necessary to use tools to fish out the pressure gauge for reading data. Therefore, a retrievable tool is needed to operate the recovery of the pressure gauge.

[0003] Currently, the electronic programmable tubing retrievable tool in use mainly has poor obstacle-crossing ability of the hanger due to the structure of the programmable release part and the hanger. When encountering a hard stepped hole without chamfer, due to the obstruction of the support arm, it is easy to cause the problem that the hanger is blocked and cannot be lifted and recovered. Summary of the Invention

[0004] In order to improve the defect of poor obstacle-crossing ability of the hanger in related technologies, the present application provides a hanger and recovery tool for oilfield dynamic monitoring.

[0005] The hanger and recovery tool for oilfield dynamic monitoring provided by the present application adopts the following technical solutions:

[0006] A hanger and recovery tool for oilfield dynamic monitoring, characterized by comprising:

[0007] A hanging module, the hanging module includes a hanger body, support arms and a driving member. The hanger body is columnar. One end of the hanger body is provided with a threaded inner hole for fixing a pressure gauge, and the other end is provided with a conical fishing neck;

[0008] There are multiple support arms. A driving slider is slidably connected along the axial direction inside the hanger body. The multiple support arms are circumferentially spaced apart along the hanger body. The hanger body is provided with multiple receiving grooves for receiving the support arms. One end of the support arm is slidably connected to the driving member, and the other end extends outside the hanger body. A torsion spring is provided at the hinge joint between the support arm and the driving slider. The torsion spring has a tendency to drive the multiple support arms to rotate and contract into the receiving grooves;

[0009] The driving member is used to drive the ends of the multiple support arms to rotate and extend outside the receiving grooves;

[0010] A recovery module, the recovery module is used to cooperate with the driving member to drive the multiple support arms to rotate and contract into the receiving grooves.

[0011] Optionally, the driving member includes a push rod and a tension spring;

[0012] A central sliding hole is axially formed through the hanger body, the push rod is coaxially and slidably connected in the central sliding hole, and one end of the push rod is fixedly connected to the driving slider;

[0013] The tension spring is sleeved on the push rod, one end of the tension spring is fixedly connected to the driving slider, and the other end is fixedly connected to the inside of the hanger body;

[0014] When the tension spring is in a free state, the push rod causes the ends of the plurality of support arms to rotate and extend outside the receiving groove through the driving slider.

[0015] Optionally, the left side wall of the receiving groove is provided as an inclined surface, and a roller is rotatably connected to the end of the support arm.

[0016] Optionally, the recovery module includes an outer cylinder, a fishing claw, a push rod and a release member;

[0017] The fishing claw is coaxially sleeved on the outer cylinder, the fishing claw is made of an elastic material, and the fishing claw is used to grab the fishing neck at the end of the hanger body;

[0018] The push rod is coaxially and slidably connected in the outer cylinder, one end of the push rod extends outside the outer cylinder, and the other end is coaxially sleeved and fixed with a release tube, and the end of the push rod extends outside the release tube;

[0019] The release member is used to drive the push rod to slide.

[0020] Optionally, the release member includes an upper joint, a spiral sleeve, a guide pin, a release spring, a centralizing sleeve and a copper shear pin;

[0021] The upper joint is coaxially sleeved and clamped with the outer cylinder, the end of the push rod extends into the upper joint, one end of the push rod extending into the upper joint is fixedly connected to the spiral sleeve, the guide pin is inserted into the upper joint, and the spiral sleeve is provided with a spiral hook groove for cooperating with the guide pin;

[0022] The release spring is sleeved on the push rod, one end of the release spring abuts against the top wall of the outer cylinder, and the other end abuts against the end of the release sleeve;

[0023] One end of the centralizing sleeve is inserted into the release sleeve, and the copper shear pin fixes the centralizing sleeve and the release sleeve

[0024] When the guide pin is hooked in the spiral hook groove, the release spring is in a compressed state, and the push rod contracts into the centralizing sleeve;

[0025] When the guide pin is disengaged from the spiral hook groove, the release spring is in a free state, and the end of the push rod is inserted into the hanger body to drive the driving slider to slide.

[0026] Optionally, one end of the straightening sleeve facing away from the release sleeve is coaxially fixedly connected with a conical bell mouth.

[0027] Optionally, the end of the fishing claw is coaxially fixedly connected with a tapered guide sleeve by a pin.

[0028] Optionally, a claw spring is provided between the fishing claw and the upper joint, and the claw spring is used to ensure that the fishing claw firmly grasps the fishing neck at the end of the hanger body.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The present application optimizes the structural design of the hanger, especially the rotation and telescopic mechanism of the support arm, so that when encountering complex downhole environments such as hard step holes without chamfers, the hanger body can be inserted with a push rod to drive the driving slider to slide, thereby driving the support arm to retract, so as to flexibly adapt to the downhole environment and pass through smoothly, effectively avoiding the problem of traditional hangers being unable to be lifted up and recovered due to structural limitations, and improving the obstacle crossing ability and working stability of the hanger.

[0031] 2. The recovery module in this application makes the deployment and recovery process of the pressure gauge more convenient and efficient through the combined use of the fishing claw and the release member. The fishing claw can firmly grasp the fishing neck of the hanger body, and the release member can remotely control the internal drive member of the hanger by accurately controlling the sliding of the top rod, thereby driving the support arm to retract, so that the hanger is separated from the oil pipe, which is convenient for safely and quickly recovering the pressure gauge.

[0032] 3. The design of each component of this application takes into account the needs of actual use. For example, the roller design at the end of the support arm can reduce friction with the well wall and extend the service life; the combination of the straightening sleeve and the copper shear pin enhances the stability of the release part under complex well conditions; the conical design of the fishing claw and the guide sleeve improves the gripping ability and guidance of the fishing claw; the setting of the claw spring ensures the firmness of the fishing claw during the gripping process. These design details jointly improve the overall durability and stability of the tool and ensure the smooth progress of dynamic monitoring of oil fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a suspension module and a recovery module of an embodiment of the present application when they are in a salvage state and the support arm of the hanger body is in an extended state;

[0034] Figure 2 It is a schematic diagram of the overall structure of the suspension module and the recovery module of the embodiment of the present application when they are in the salvage state and the support arm of the hanger body is in the retracted state.

[0035] Explanation of the reference numerals: 1. hanger body; 11. threaded inner hole; 12. fishing neck; 13. driving slider; 14. center sliding hole; 2. support arm; 21. torsion spring; 22. roller; 3. driving member; 31. push rod; 32. tension spring; 6. outer tube; 61. fishing claw; 611. guide sleeve; 62. push rod; 7. release member; 71. upper joint; 72. spiral sleeve; 721. spiral hook groove; 73. guide pin; 74. release spring; 75. straightening sleeve; 751. bell mouth; 76. copper shear pin; 77. claw spring. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-2 This application is described in further detail.

[0037] The present application discloses a hanger and a recovery tool for dynamic monitoring of oil fields. Figure 1 and Figure 2 The invention discloses a hanger and a recovery tool for dynamic monitoring of oil fields, comprising a hanger module and a recovery module.

[0038] The suspension module is used to suspend a high-precision electronic temperature and pressure gauge in an oil pipe. The suspension module comprises a hanger body 1, a support arm 2 and a drive member 3.

[0039] The hanger body 1 is designed as a column, with a threaded inner hole 11 at one end for fixing the pressure gauge; the other end is a conical fishing neck 12 for easy grabbing during recovery. A driving slider 13 is axially slidably connected to the hanger body 1, and multiple receiving grooves are opened to accommodate the support arm 2.

[0040] There are two support arms 2, which are spaced apart along the circumference of the hanger body 1. One end of the support arm 2 is hinged to the driving slider 13, and the other end extends outside the hanger body 1. A torsion spring 21 is provided at the hinge, so that the support arm 2 naturally shrinks into the receiving groove when no external force is applied. The left side wall of the receiving groove is set as an inclined surface, and the end of the support arm 2 is rotatably connected to a roller 22

[0041] The driving member 3 includes a push rod 31 and a tension spring 32. The push rod 31 is coaxially slidably connected to the central slide hole 14 of the hanger body 1, and one end is fixedly connected to the driving slider 13. The tension spring 32 is sleeved on the push rod 31, one end is fixed to the driving slider 13, and the other end is fixed to the inside of the hanger body 1. When the tension spring 32 is in a free state, the push rod 31 extends the support arm 2 to the outside of the receiving groove through the driving slider 13, forming a stable support structure.

[0042] The recovery module is used to recover the suspension module together with the pressure gauge from the oil pipe. The recovery module includes an outer tube 6, a fishing claw 61, a push rod 62 and a release member 7.

[0043] A fishing claw 61 is coaxially sleeved at the end of the outer cylinder 6. The fishing claw 61 is made of an elastic material and is used to grasp the fishing neck 12 of the hanger body 1.

[0044] The ejector rod 62 is coaxially and slidably connected inside the outer cylinder 6. One end extends outside the outer cylinder 6, and the other end is coaxially sleeved and fixed with a release pipe. The release member 7 is used to drive the sliding of the ejector rod 62.

[0045] The release member 7 includes an upper joint 71, a helical sleeve 72, a guide pin 73, a release spring 74, a centralizing sleeve 75, and a copper shear pin 76. The upper joint 71 is coaxially sleeved and clamped with the outer cylinder 6. The ejector rod 62 extends into the upper joint 71 and is fixedly connected to the helical sleeve 72. The guide pin 73 is inserted into the upper joint 71 and cooperates with the helical groove 721 on the helical sleeve 72. The release spring 74 is sleeved on the ejector rod 62. One end abuts against the top wall of the outer cylinder 6, and the other end abuts against the end of the release sleeve. One end of the centralizing sleeve 75 is inserted into the release sleeve and fixed by a copper shear pin 76. When the guide pin 73 is hooked in the helical groove 721, the release spring 74 is in a compressed state, and the ejector rod 62 contracts. When the guide pin 73 disengages from the helical groove 721, the release spring 74 drives the ejector rod 62 to slide, and its end is inserted into the hanger body 1 to drive the slider 13, causing the support arm 2 to contract.

[0046] A conical bell mouth 751 is coaxially fixedly connected to the end of the centralizing sleeve 75 away from the release sleeve. The end of the fishing claw 61 is coaxially fixedly connected with a conical guide sleeve 611 by a pin. The guide sleeve 611 and the bell mouth 751 are used to facilitate the alignment of the central axes of the fishing neck 12 and the centralizing sleeve 75, and further facilitate the insertion of the ejector rod 62 into the first sliding hole to drive the push rod 31 to slide.

[0047] A claw spring 77 is arranged between the fishing claw 61 and the upper joint 71. The claw spring 77 is used to ensure that the fishing claw 61 firmly grasps the fishing neck 12 at the end of the hanger body 1.

[0048] The implementation principle of a hanger and a recovery tool for oilfield dynamic monitoring in an embodiment of the present application is as follows: When the recovery module and the suspension module grasp and recover the pressure gauge:

[0049] Preparation of the recovery module: The fishing claw 61 in the recovery module is in an open state, ready to grasp the fishing neck 12 of the hanger body 1. The release member 7 (such as the helical sleeve 72, the guide pin 73, etc.) is in the initial position, and the ejector rod 62 contracts inside the centralizing sleeve 75.

[0050] Positioning and grasping: The recovery module is lowered to near the hanger. The fishing claw 61 aligns with and firmly grasps the fishing neck 12 of the hanger body 1 through its elastic material and the guiding conical sleeve. The claw spring 77 ensures that the fishing claw 61 firmly grasps the fishing neck 12, and is ready for the recovery operation.

[0051] Driving recovery: By continuously operating the lower recovery module, the release spring 74 is compressed, causing the guide pin 73 to disengage from the spiral groove 721. At this time, the release spring 74 continuously elongates to release energy, thereby pushing the ejector rod 62 to slide forward. The ejector rod 62 is inserted into the hanger body 1 through the release tube, pushing the driving slider 13, causing the support arm 2 to contract back into the receiving groove under the action of the torsion spring 21. At this time, the hanger loses support and is lifted to the ground together with the fishing claw 61 by the recovery module. The retractable support arm 2 also effectively avoids the problem that the traditional hanger cannot be lifted and recovered due to structural limitations, improving the obstacle-crossing ability and working stability of the hanger.

[0052] Separation and data reading: After being recovered to the ground, the release claw 42 is loosened from the hanger body 1 by operating the control member 5, separating the hanger from the pressure gauge. The pressure gauge is taken out and the stored downhole temperature and pressure data are read.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A hanger and recovery tool for oil field dynamic monitoring, characterized in that: include: A suspension module, the suspension module comprising a hanger body (1), a support arm (2) and a drive member (3), the hanger body (1) being columnar, one end of the hanger body (1) being provided with a threaded inner hole (11) for fixing a pressure gauge, and the other end being provided with a conical fishing neck (12); The support arms (2) are provided with a plurality of them, and a driving slider (13) is axially slidably connected inside the hanger body (1), and the plurality of support arms (2) are distributed at intervals along the circumference of the hanger body (1). The hanger body (1) is provided with a plurality of receiving grooves for receiving the support arms (2), one end of the support arm (2) is connected to the driving slider, and the other end extends outside the hanger body (1), and a torsion spring (21) is provided at the hinge between the support arm (2) and the driving slider (13), and the torsion spring (21) has a tendency to drive the plurality of support arms (2) to rotate and contract into the receiving groove; The driving member (3) is used to drive the ends of the plurality of support arms (2) to rotate and extend outside the receiving groove; A recovery module is used to cooperate with a driving member (3) to drive the plurality of support arms (2) to rotate and retract into the receiving groove.

2. The hanger and recovery tool for oil field dynamic monitoring according to claim 1, characterized in that: The driving member (3) comprises a push rod (31) and a tension spring (32); The hanger body (1) is provided with a central sliding hole (14) extending through the hanger body (1) along the axial direction, the push rod (31) is coaxially slidably connected in the central sliding hole (14), and one end of the push rod (31) is fixedly connected to the driving slider (13); The tension spring (32) is sleeved on the push rod (31), one end of the tension spring (32) is fixed to the driving slider (13), and the other end is fixed to the inside of the hanger body (1); When the tension spring (32) is in a free state, the push rod (31) drives the slider (13) to rotate the ends of the plurality of support arms (2) to extend outside the receiving groove.

3. The hanger and recovery tool for oil field dynamic monitoring according to claim 2, characterized in that: The left side wall of the accommodating groove is arranged as an inclined surface, and the end of the supporting arm (2) is rotatably connected to a roller (22).

4. The hanger and recovery tool for oil field dynamic monitoring according to any one of claims 1 to 3, characterized in that: The recovery module comprises an outer cylinder (6), a salvaging claw (61), a mandrel (62) and a release member (7); The fishing claw (61) is coaxially sleeved on the outer cylinder (6); the fishing claw (61) is made of elastic material; and the fishing claw (61) is used to grab the fishing neck (12) at the end of the hanger body (1); The push rod (62) is coaxially slidably connected inside the outer tube (6), one end of the push rod (62) extends outside the outer tube (6), and the other end is coaxially sleeved and fixed with a release tube, and the end of the push rod (62) extends outside the release tube; The release member (7) is used to drive the push rod (62) to slide.

5. The hanger and recovery tool for oil field dynamic monitoring according to claim 4, characterized in that: The release member (7) comprises an upper joint (71), a spiral sleeve (72), a guide pin (73), a release spring (74), a straightening sleeve (75) and a copper shear pin (76); The upper joint (71) is coaxially sleeved and clamped with the outer cylinder (6), the end of the push rod (62) extends into the upper joint (71), one end of the push rod (62) extending into the upper joint (71) is fixedly connected to the spiral sleeve (72), the guide pin (73) is inserted into the upper joint (71), and the spiral sleeve (72) is provided with a spiral hook groove (721) for cooperating with the guide pin (73); The release spring (74) is sleeved on the push rod (62), one end of the release spring (74) abuts against the top wall of the outer tube (6), and the other end abuts against the end of the release sleeve; One end of the straightening sleeve (75) is inserted into the release sleeve, and the copper shear pin (76) fixes the straightening sleeve (75) and the release sleeve. When the guide pin (73) is hooked in the spiral hook groove (721), the release spring (74) is in a compressed state, and the push rod (62) is retracted in the straightening sleeve (75); When the guide pin (73) is disengaged from the spiral hook groove (721), the release spring (74) is in a free state, and the end of the push rod (62) is inserted into the hanger body (1) to drive the driving slide block (13) to slide.

6. The hanger and recovery tool for oil field dynamic monitoring according to claim 5, characterized in that: One end of the straightening sleeve (75) facing away from the release sleeve is coaxially fixedly connected with a conical bell mouth (751).

7. The hanger and recovery tool for oil field dynamic monitoring according to claim 6, characterized in that: The end of the fishing claw (61) is coaxially fixedly connected with a conical guide sleeve (611) by a pin.

8. The hanger and recovery tool for oil field dynamic monitoring according to claim 7, characterized in that: A claw spring (77) is provided between the fishing claw (61) and the upper joint (71), and the claw spring (77) is used to ensure that the fishing claw (61) firmly grasps the fishing neck (12) at the end of the hanger body (1).

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