Steel pipe cable centralizing device for testing and transferring

Abstract

The utility model discloses a steel pipe cable centralizing device for testing and transferring. The steel pipe cable centralizing device comprises a buffer assembly and a guide joint, the buffer assembly comprises a spring shaft, a spring, a connecting pin and a telescopic sleeve; a first shoulder is arranged on the outer wall of the spring shaft, a second shoulder is arranged on the outer wall of the telescopic sleeve, a sliding groove is formed in the position, below the second shoulder, of the telescopic sleeve, and the connecting pin penetrates through the sliding groove and is inserted into the outer wall of the spring shaft. The spring is arranged between the first shoulder and the second shoulder; the guide joint can be inserted into the lower end of the telescopic sleeve. The testing system can be reliably used for a long time, is convenient to use, provides guarantee for smoothly testing and adjusting the water well, and has remarkable economic benefits.

Description

Technical Field

[0001] The utility model relates to the technical field of well logging equipment, in particular to a well logging steel pipe cable straightening device. Background Art

[0002] In order to ensure the normal production of the oil field, it is necessary to test the water injection wells frequently. The water injection well test is to transport the test instrument to the well with a steel pipe cable, and after the data is recorded in the well, it is pulled out of the well to the ground. The test instrument is pulled out of the well to the ground when the top of the rope cap of the test instrument reaches the top of the blowout preventer above the test valve at the water injection wellhead. Since the blowout preventer is closed, the test instrument cannot be seen, and it is unknown when the test instrument reaches the top of the blowout preventer. Only when the test instrument collides with the top of the blowout preventer and cannot move, do we know that the test instrument has been pulled out to the ground. Therefore, when the test instrument is pulled out, the rope cap of the test instrument will hit the top of the blowout preventer. When the rope cap of the test instrument hits the top of the blowout preventer, a large acceleration is generated, and a large impact force is generated, resulting in the following problems:

[0003] First, it will cause the top of the test instrument rope cap to deform (bend, the hole changes from round to oval), which will squeeze the steel pipe cable and make thousands of meters of steel pipe cable scrapped, resulting in significant economic losses;

[0004] Second, the vibration during the collision will affect the use of the test instrument, which may cause inaccurate test data and large errors, or even cause the test food to be completely damaged and unusable.

[0005] Third, the steel tube cable can no longer be inserted into the rope cap of the test instrument, and the rope cap needs to be replaced.

[0006] The current solution is to train test personnel, operate smoothly, and slow down the lifting speed. However, since the test environment is outdoors, the test vehicle is far away from the wellhead, and the speed of the test vehicle cannot be continuously changed, the above requirements cannot be fully achieved. Therefore, the problem of test equipment being hit has existed for a long time, resulting in unsuccessful tests, high test costs, and difficulty in ensuring test quality.

[0007] Publication (announcement) number: CN116495569A, discloses a wellhead logging cable guiding device, including a left cylinder, a right cylinder, a pulley, a roller shaft, and a bearing seat; the left cylinder and the right cylinder are both semi-cylindrical, with flange bases at the bottom and protrusions at the side ends; the left cylinder and the right cylinder are installed on the wellhead base through the flange base, and the protrusions of the left cylinder and the protrusions of the right cylinder form a slot for passing the cable, and the left cylinder and the right cylinder are fixedly connected; the pulley is located at the slot, the pulley is rotatably connected to the protrusion, the bearing seat is installed on the upper end surface of the left cylinder and the right cylinder, and the roller shaft is rotatably connected to the bearing seat, which is used to slide the cable and transition the cable from horizontal motion to vertical motion. The invention has the following beneficial effects: simplifying the guiding process of the logging cable, improving the stability and economic benefits of the cable guiding.

[0008] Publication (announcement) number: CN217445003U, discloses a wellhead guide device for a logging cable. The wellhead guide device for a logging cable of the invention comprises: a main body, which comprises a top plate and a barrel; and a pulley assembly, which is arranged on the top plate and comprises a bracket, a bearing and a pulley, and the pulley is used to contact the cable; a main body opening is provided on the main body, and the main body opening comprises a top plate opening and a barrel opening which are interconnected, and the barrel opening passes through the barrel. By utilizing the wellhead guide device for a logging cable, the pulley of the wellhead guide device for a logging cable can avoid wear and severe bending of the cable, and the device has a main body opening, so that it can be disassembled and assembled at any time during use without removing the cable, which greatly facilitates the disassembly and assembly and use of the device.

[0009] Publication (announcement) number: CN208605151U, discloses a well delivery mechanism for oil and water well test cables, the test cable passes through a blowout preventer box and extends downward along the axis of the blowout preventer riser, the horizontal bottom plate is held on the blowout preventer riser by a clamp, a column is connected to the horizontal bottom plate, a horizontal top plate is fixed on the top of the column, mounting vertical plates are arranged at the front ends of the wall panels on both sides of the horizontal top plate, a reducer driven by an explosion-proof motor is installed on the back of the mounting vertical plate, two driving output shafts of the reducer are arranged up and down and pass forward through the mounting vertical plate and are installed with concave arc rollers, concave arc pressure wheels clamped on the other side of the cable are correspondingly provided on the left sides of the two rollers, the concave arc pressure wheels are hinged at the right end of the L-shaped swing arm, the middle parts of the two L-shaped swing arms are hinged on the mounting vertical plate through the swing arm shaft, the left end of the upper L-shaped swing arm is hinged with a pressure wheel adjustment rod, the lower end of the pressure wheel adjustment rod passes through the left end of the lower L-shaped swing arm and is screwed with an adjustment seat, and a buffer spring is provided between the top of the adjustment seat and the lower L-shaped swing arm. This mechanism can solve the problem of difficulty in inserting cables into the well in the early stage of testing and improve logging efficiency.

[0010] In the above prior art, when the test instrument is pulled out, the rope cap of the test instrument will hit the top of the blowout preventer, causing damage to the test instrument.

[0011] In short, the technical solutions of the above-disclosed technologies, the technical problems to be solved and the beneficial effects produced are all different from the present utility model. Regarding more technical features, technical problems to be solved and the beneficial effects of the present utility model, there is no technical inspiration in the above-disclosed technical documents. Summary of the invention

[0012] In view of the above-mentioned defects in the prior art, the purpose of the utility model is to provide a steel pipe cable straightening device for measuring and adjusting.

[0013] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0014] The utility model provides a measuring and adjusting steel pipe cable straightening device, comprising a buffer component and a guide joint; the buffer component comprises a spring shaft, a spring, a connecting pin and a telescopic sleeve; the outer wall of the spring shaft is provided with a first shoulder, the outer wall of the telescopic sleeve is provided with a second shoulder, the telescopic sleeve is provided with a slide groove below the second shoulder, the connecting pin passes through the slide groove and is inserted into the outer wall of the spring shaft; the spring is provided between the first shoulder and the second shoulder; the guide joint can be inserted into the lower end of the telescopic sleeve.

[0015] Furthermore, the buffer assembly also includes a straightening sleeve and a guide tube;

[0016] Specifically, the spring shaft is provided with a first central through hole, a truncated cone is provided at the upper end of the first central through hole, and a straightening sleeve and a guide tube are sequentially provided under the truncated cone in the first central through hole.

[0017] Furthermore, an instrument joint is provided at the lower end of the guide joint;

[0018] Specifically, the guide joint is provided with an upper cone portion above the instrument joint.

[0019] Furthermore, the telescopic sleeve has a limiting shoulder inside, the inner diameter of the limiting shoulder is smaller than the outer diameter of the upper cone of the guide joint, and the lower end surface of the limiting shoulder is conical, and the taper is the same as that of the upper cone.

[0020] Furthermore, a mushroom head is provided at the upper end of the guide joint. When the guide joint pushes the telescopic sleeve upward to the upper starting point, the mushroom head on the guide joint does not contact the lower end of the guide tube.

[0021] Furthermore, the length between the lower end of the slide slot and the lower end of the connecting pin is greater than the compression distance of the spring;

[0022] Specifically, when the telescopic sleeve is at the lower starting point of the spring shaft, the spring is in a pre-tightened state;

[0023] Specifically, there are at least two slide grooves, and each of the slide grooves is correspondingly installed with a connecting pin.

[0024] Furthermore, the material of the straightening sleeve is copper, and the inner diameter of the frustum of the spring shaft is larger than the inner diameter of the straightening sleeve.

[0025] Further, the spring is sleeved outside the spring shaft;

[0026] Specifically, the upper end surface of the spring is pressed against the lower end surface of the first shoulder of the spring shaft, and the outer diameter of the first shoulder is larger than the middle diameter of the spring;

[0027] Specifically, the lower end surface of the spring bears against the upper end surface of the second shoulder of the telescopic sleeve, and the outer diameter of the second shoulder is greater than the middle diameter of the spring.

[0028] Furthermore, the guide tube is threadedly connected to the lower end of the first central through hole, and the guide tube is exposed from the lower end surface of the spring shaft;

[0029] Specifically, the inner diameter of the guide tube is larger than the inner diameter of the straightening sleeve, and the inner diameter of the straightening sleeve is larger than the diameter of the steel pipe cable.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] When the test instrument is lifted to the wellhead, the limit of the telescopic sleeve will compress the spring, and the elasticity of the spring plays a buffering role, so that the test instrument will not collide with the wellhead device, which can prevent the steel pipe cable from being squeezed and damaged, and avoid the test instrument from being damaged, and the rope cap will not be deformed and bent by the impact. The utility model can ensure the long-term reliable use of the test system, is easy to use, provides guarantee for the smooth measurement and adjustment of water wells, and has significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The utility model is a structural schematic diagram of a measuring and adjusting steel pipe cable straightening device.

[0033] In the figure: 1. steel pipe cable; 2. blowout preventer upper joint; 3. spring shaft; 4. straightening sleeve; 5. spring; 6. guide pipe; 7. connecting pin; 8. telescopic sleeve; 8-1. slide groove; 8-2. limit shoulder 9. rope loop; 10. testing instrument; 10-1. mushroom head; 10-2. upper cone; 11. blowout preventer. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Embodiment 1:

[0036] See also Figure 1 The utility model provides a steel pipe cable straightening device, which includes a buffer component and a guide joint 10.

[0037] The guide joint 10 is provided with an instrument joint at the lower end thereof for connecting with an instrument, and the guide joint 10 is provided with a mushroom head 10-1 at the upper end thereof. The guide joint 10 is provided with an upper cone 10-2 for guiding between the mushroom head 10-1 and the instrument joint.

[0038] The buffer assembly includes a spring shaft 3, a straightening sleeve 4, a spring 5, a guide tube 6, a connecting pin 7, and a telescopic sleeve 8;

[0039] The spring shaft 3 is provided with a first central through hole, a truncated cone is provided at the upper end of the first central through hole, a straightening sleeve 4 and a guide tube 6 are provided in sequence under the truncated cone of the first central through hole, the guide tube 6 is threadedly connected to the lower end of the first central through hole, the guide tube 6 is exposed from the lower end surface of the spring shaft 3, the inner diameter of the guide tube 6 is larger than the inner diameter of the straightening sleeve 4, and the inner diameter of the straightening sleeve 4 is larger than the diameter of the steel pipe cable 1.

[0040] The guide tube 6 blocks the stabilizing sleeve 4 so that the stabilizing sleeve 4 will not move axially in the spring shaft 3 .

[0041] The outer wall of the spring shaft 3 is provided with a first shoulder, the outer wall of the telescopic sleeve 8 is provided with a second shoulder, the telescopic sleeve 8 is provided with a slide groove 8-1 below the second shoulder, the connecting pin 7 passes through the slide groove 8-1 and is inserted into the outer wall of the spring shaft 3, connecting the telescopic sleeve 8 with the spring shaft 3, so that the telescopic sleeve 8 can only slide axially on the spring shaft 3, but does not separate from the spring shaft 3;

[0042] The spring 5 is sleeved on the outside of the spring shaft 3, and the upper end surface of the spring 5 is against the lower end surface of the first shoulder of the spring shaft 3. The outer diameter of the first shoulder is larger than the middle diameter of the spring 5, so that the upper end of the spring 5 can still be restricted after the spring 5 is compressed. The lower end surface of the spring 5 is against the upper end surface of the second shoulder of the telescopic sleeve 8. The outer diameter of the second shoulder is larger than the middle diameter of the spring 5, so that the spring 5 cannot leave the upper shoulder of the telescopic sleeve 8 after compression.

[0043] The telescopic sleeve 8 can slide on the spring shaft 3 to compress the spring 5. The telescopic sleeve 8 cannot be separated from the spring shaft 3 under the restriction of the connecting pin 7. When the telescopic sleeve 8 is at the lower starting point of the spring shaft 3, the spring 5 is in a pre-tightened state.

[0044] The telescopic sleeve 8 has a limiting shoulder 8-2 inside, the inner diameter of the limiting shoulder 8-2 is smaller than the outer diameter of the upper cone 10-2 of the guide joint 10, and the lower end surface of the limiting shoulder 8-2 is conical, and the taper is the same as that of the upper cone 10-2.

[0045] When in use, the guide joint 10 is located under the telescopic sleeve 8 , and the steel tube cable 1 passing through the guide joint 10 passes through the guide tube 6 , the straightening sleeve 4 , and passes out of the spring shaft 3 .

[0046] Specifically, the length from the lower end of the slide groove 8 - 1 to the lower end of the connecting pin 7 is greater than the compression distance of the spring 5 .

[0047] Specifically, the material of the straightening sleeve 4 is copper, and the inner diameter of the truncated cone of the spring shaft 3 is larger than the inner diameter of the straightening sleeve 4, so that the steel tube cable 1 can only contact the inner wall of the straightening sleeve 4 but not the spring shaft 3. When the test instrument is raised and lowered, the steel tube cable 1 only contacts the straightening sleeve 4. The straightening sleeve 4 is made of copper, which is soft and wear-resistant, and will not damage the steel tube cable. It protects the steel tube cable 1 and can increase its service life.

[0048] Specifically, there are at least two slide grooves 8 - 1 , and each slide groove 8 - 1 is correspondingly installed with a connecting pin 7 .

[0049] Specifically, when the guide joint 10 pushes the telescopic sleeve 8 upward to the upper starting point, the mushroom head 10 - 1 on the guide joint 10 does not contact the lower end of the guide tube 6 .

[0050] Embodiment 2:

[0051] Based on Example 1, this embodiment provides a logging string provided with a logging steel pipe cable straightening device, including a logging steel pipe cable straightening device, a logging instrument, a lubricant preventer 11, a lubricant preventer upper joint 2, and a steel pipe cable 1;

[0052] The upper end outer wall of the spring shaft 3 of the measuring and calling steel pipe cable straightening device is threadedly connected with the lower end inner wall of the blowout preventer upper joint 2;

[0053] The lower end of the blowout preventer 11 is installed on the test valve of the water injection well, and the upper inner wall of the blowout preventer 11 is threadedly connected with the lower outer wall of the blowout preventer upper joint 2;

[0054] The upper end of the test instrument is connected to the instrument connector at the lower end of a guide connector 10 of a test and call steel pipe cable straightening device;

[0055] A steel pipe cable sealer is installed at the upper end of the blowout preventer upper joint 2, and a rope loop 9 is provided on the steel pipe cable 1. The steel pipe cable 1 is connected to the testing instrument through the rope loop 9.

[0056] When the test instrument is lifted to the wellhead after the test and adjustment is completed, the upper cone 10-2 of the guide joint 10 of the steel pipe cable straightening device cooperates with the limit shoulder 8-2 of the telescopic sleeve 8, and the lifting force is transmitted to the telescopic sleeve 8, the telescopic sleeve 8 moves upward, and then transmitted to the spring 5. The spring 5 is compressed and stores energy to reduce instantaneous impact, thereby avoiding damage to the top of the test instrument.

[0057] It should be noted that the blowout preventer 11, the blowout preventer upper joint 2, the steel pipe cable 1, the well logging instrument, the water injection well test valve, and the steel pipe cable sealer are all prior arts, and those skilled in the art are aware of this.

[0058] Embodiment 3:

[0059] On the basis of Example 1 or Example 2, this embodiment provides a method for using a steel pipe cable straightening device, comprising the following steps:

[0060] S1, connect the pipe column, first connect the steel pipe cable 1 and the test instrument with the rope loop 9, insert the steel pipe cable 1 into the guide joint 10, and connect the guide joint 10 and the test instrument as a whole; then insert the steel pipe cable 1 into the buffer assembly, pass through the telescopic sleeve 8, the guide pipe 6, the straightening sleeve 4, the spring shaft 3, and the upper joint 2 of the blowout preventer in sequence, and connect the upper joint 2 of the blowout preventer with the spring shaft 3; finally, put the test instrument, the guide joint 10, and the buffer assembly into the blowout preventer 11 set on the test valve, connect the upper joint 2 of the blowout preventer with the blowout preventer 11, and install the steel pipe cable sealer on the upper end of the upper joint 2 of the blowout preventer;

[0061] S2. Conduct testing work;

[0062] S3. Recover the test instrument and lift the steel pipe cable 1. When lifting the test instrument to the wellhead, the upper cone 10-2 of the guide joint 10 cooperates with the limit shoulder 8-2 of the telescopic sleeve 8, and the lifting force is transmitted to the telescopic sleeve 8. The telescopic sleeve 8 moves upward and then transmitted to the spring 5. The spring 5 is compressed and stores energy to reduce instantaneous impact, thereby avoiding damage to the top of the test instrument.

[0063] All components and connection methods of components not discussed in this application belong to the known technologies in this technical field and can be directly applied without further explanation.

[0064] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0065] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0066] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A steel pipe cable straightening device for measuring and adjusting, characterized in that: Including buffer components and guide joints; The buffer assembly includes a spring shaft, a spring, a connecting pin, and a telescopic sleeve; The outer wall of the spring shaft is provided with a first shoulder, the outer wall of the telescopic sleeve is provided with a second shoulder, the telescopic sleeve is provided with a slide groove below the second shoulder, the connecting pin passes through the slide groove and is inserted into the outer wall of the spring shaft; the spring is provided between the first shoulder and the second shoulder; The guide joint can be inserted into the lower end of the telescopic sleeve.

2. The steel pipe cable straightening device for measuring and adjusting according to claim 1 is characterized in that: The buffer assembly also includes a straightening sleeve and a guide tube; The spring shaft is provided with a first central through hole, a truncated cone is provided at the upper end of the first central through hole, and a straightening sleeve and a guide tube are sequentially provided under the truncated cone in the first central through hole.

3. A steel pipe cable straightening device for measuring and adjusting according to claim 2, characterized in that: An instrument joint is provided at the lower end of the guide joint; The guide joint is provided with an upper cone above the instrument joint.

4. A steel pipe cable straightening device for measuring and adjusting according to claim 3, characterized in that: The telescopic sleeve has a limiting shoulder inside, the inner diameter of the limiting shoulder is smaller than the outer diameter of the upper cone of the guide joint, and the lower end surface of the limiting shoulder is conical, and the taper is the same as that of the upper cone.

5. The steel pipe cable straightening device for measuring and adjusting according to claim 4 is characterized in that: A mushroom head is arranged at the upper end of the guide joint. When the guide joint pushes the telescopic sleeve upward to the upper starting point, the mushroom head on the guide joint does not contact the lower end of the guide tube.

6. The steel pipe cable straightening device for measuring and adjusting according to claim 1 is characterized in that: The length between the lower end of the slide groove and the lower end of the connecting pin is greater than the compression distance of the spring; When the telescopic sleeve is at the lower starting point of the spring shaft, the spring is in a pre-tightened state; There are at least two slide grooves, and each slide groove is correspondingly installed with a connecting pin.

7. The steel pipe cable straightening device for measuring and adjusting according to claim 2 is characterized in that: The material of the straightening sleeve is copper, and the inner diameter of the truncated cone of the spring shaft is larger than the inner diameter of the straightening sleeve.

8. The steel pipe cable straightening device for measuring and adjusting according to claim 2 is characterized in that: The spring is sleeved outside the spring shaft; The upper end surface of the spring is pressed against the lower end surface of the first shoulder of the spring shaft, and the outer diameter of the first shoulder is larger than the middle diameter of the spring; The lower end surface of the spring bears against the upper end surface of the second shoulder of the telescopic sleeve, and the outer diameter of the second shoulder is greater than the middle diameter of the spring.

9. The steel pipe cable straightening device for measuring and adjusting according to claim 2 is characterized in that: The guide tube is threadedly connected to the lower end of the first central through hole, and the guide tube is exposed from the lower end surface of the spring shaft; The inner diameter of the guide tube is larger than the inner diameter of the straightening sleeve, and the inner diameter of the straightening sleeve is larger than the diameter of the steel pipe cable.

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