Six-key active drill rod assembly for overhauling oil-gas-water well

Abstract

The six-key driving drill rod assembly comprises a drill rod, driving keys used for rotating the drill rod are fixedly connected to the outer wall of the drill rod in a central symmetry mode, the outer walls of the driving keys are sleeved with square bushing assemblies, the bottom of the drill rod is provided with first threads, and the first threads are provided with second threads. The top of the first thread is provided with a second thread, and the outer wall of the second thread is sleeved with a threaded sleeve in a threaded mode. By means of the design of the drill rod, the driving key, the first thread, the second thread, the threaded sleeve and the square bushing assembly, an original square rod is replaced with a round rod, so that when the first thread and the second thread are machined, machining is directly conducted on the end portion of the round rod, and the driving key used for driving the drill rod to rotate is welded to the outer wall of the drill rod; therefore, the situation that when a traditional kelly bar is machined, the kelly bar needs to be divided into different sections and needs to be machined into different shapes is avoided, and the machining difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas field overhaul well operations, in particular to a six-key active drill rod assembly used for overhauling oil, gas and water wells. Background Art

[0002] With the extension of the exploitation time of oil and gas fields, some common Φ139.7mm and Φ127.8mm casing oil, gas and water wells are seriously aged and damaged, and need to be repaired by casing replacement technology. Some abandoned wells also require the extraction of medium and shallow buried casing to restore the landform in order to carry out ground construction activities. In such cases, casing outer milling operations are required. The commonly used well repair turntable is the turntable of model ZP-175, which needs to rotate the square drill rod that matches it. The large-diameter non-standard casing milling square drill rod needs to be connected to the drill bit through a thread at the bottom end of the square drill rod during use, so that the end of the square drill rod needs to be made into a truncated cone shape, and a thread is opened on the outer wall of the truncated cone, so that when the drill rod is made, the middle part of the drill rod needs to be made into a square, and the two ends are set to a truncated cone shape, which increases the difficulty of production. Utility Model Content

[0003] The utility model aims to provide a six-key active drill pipe assembly for overhauling oil, gas and water wells, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a six-key active drill pipe assembly for overhauling oil, gas and water wells, comprising a drill pipe, a driving key for rotating the drill pipe is fixedly connected to the center of the outer wall of the drill pipe symmetrically, the outer wall of the driving key is sleeved with a square core assembly, the bottom of the drill pipe is provided with a first thread, the top of the drill pipe is provided with a second thread, and the outer wall thread of the second thread is sleeved with a threaded sleeve.

[0005] Preferably, the bushing assembly comprises connecting blocks centrally and symmetrically arranged on both sides of the drill rod, a positioning groove adapted to the drill rod is formed on one side of the connecting block, and the drill rod is inserted and connected inside the positioning groove.

[0006] Preferably, a driving groove adapted to the driving key is symmetrically provided on the inner wall of one side of the positioning groove, and the driving key is inserted and connected inside the driving groove.

[0007] Preferably, a first connecting pile is symmetrically fixedly connected to the top center of one of the connecting blocks, and a second connecting pile is symmetrically fixedly connected to the top center of the other connecting block, and a fixing component is provided on the side opposite to the first connecting pile and the second connecting pile.

[0008] Preferably, the fixing assembly includes a bolt threadedly inserted into the middle of the first connecting pile, the bolt threadedly inserted into the middle of the second connecting pile, a nut is provided on one side of the second connecting pile, and the nut threadedly sleeved on one end of the bolt.

[0009] Preferably, a handle for moving the position of the connecting block is fixedly and symmetrically connected to the top center of the connecting block.

[0010] Technical effects and advantages of the utility model:

[0011] The utility model replaces the original square rod with a round rod through the design of the drill rod, the driving key, the first thread, the second thread, the threaded sleeve and the square bushing assembly, so that when the first thread and the second thread are processed, the processing is directly performed on the end of the round rod, and the driving key for driving the drill rod to rotate is welded on the outer wall of the drill rod, thereby avoiding the situation that the traditional square drill rod needs to be divided into different sections and processed into different shapes during processing, thereby reducing the processing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front structural schematic diagram of the drill rod of the utility model.

[0013] Figure 2 This is a front sectional structural diagram of a drill rod of the utility model.

[0014] Figure 3 It is a schematic diagram of the cross-sectional structure of the drill rod of the utility model when viewed from above.

[0015] Figure 4 It is a schematic diagram of the structure of the utility model from top view.

[0016] Figure 5 Utility Model Figure 4 A schematic diagram of the enlarged structure of part A.

[0017] In the figure: 1. drill rod; 2. driving key; 3. first thread; 4. second thread; 5. threaded sleeve; 6. connecting block; 7. positioning groove; 8. driving groove; 9. first connecting pile; 10. second connecting pile; 11. bolt; 12. nut; 13. handle. DETAILED DESCRIPTION

[0018] 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.

[0019] The utility model provides Figure 1-5 The six-key active drill pipe assembly shown is used for overhauling oil, gas and water wells, including a drill pipe 1, a driving key 2 for rotating the drill pipe 1 is fixedly connected to the center of the outer wall of the drill pipe 1 symmetrically, the outer wall of the driving key 2 is sleeved with a square core assembly, a first thread 3 is provided at the bottom of the drill pipe 1, a second thread 4 is provided at the top of the drill pipe 1, and a threaded sleeve 5 is provided on the outer wall thread of the second thread 4.

[0020] It should be noted that the drill pipe 1 is a cylindrical drill pipe 1 with a circular cross-section, so that six driving keys 2 are set, which are fixed on the outer wall of the drill pipe 1 in a centrally symmetrical manner, set as an circumscribed circle, welded and fixed, and planed and straightened. The driving key 2 is set in the middle of the drill pipe 1, so that the drill pipe 1 is driven to rotate by the driving key 2. The end of the driving key is inclined, and the inclination angle is forty-five degrees. The first thread opened at the bottom of the drill pipe 1 is used to connect with the casing milling pipe column, and the top of the second thread 4 is provided with a threaded sleeve 5 matched therewith. When in use, it is connected to the faucet through the threaded sleeve 5, and water is input into the well through the faucet when in use.

[0021] The drill rod 1 is set to have a total length of 12.5 to 14 m, the length at the connection with the driving key 2 is 11.56 to 13.06 m, the length at the top of the driving key 2 is 420 mm, and the length at the bottom of the driving key 2 is 1520 mm;

[0022] The diameter of the driving key 2 is set to be 12 mm, and the length of the driving part is 11.56 to 13.06 m.

[0023] Specifically, the bushing assembly includes connecting blocks 6 centrally and symmetrically arranged on both sides of the drill rod 1 , one side of the connecting block 6 is provided with a positioning groove 7 adapted to the drill rod 1 , and the drill rod 1 is inserted and connected inside the positioning groove 7 .

[0024] Specifically, a driving groove 8 adapted to the driving key 2 is symmetrically opened on the inner wall of one side of the positioning groove 7 , and the driving key 2 is inserted and connected inside the driving groove 8 .

[0025] It should be noted that there are two connecting blocks 6, which are symmetrically arranged on both sides of the drill rod 1. Positioning grooves 7 are provided on the opposite sides of the two connecting blocks 6. When in use, the connecting blocks 6 are used to move the connecting blocks 6 to the two sides of the drill rod 1 respectively, and the drill rod 1 is enclosed by the positioning grooves 7 provided on the connecting blocks 6. The number of driving grooves 8 provided on the inner wall of one side of the two positioning grooves 7 is consistent with the number of driving keys 2; the core-filling assembly formed by the two connecting blocks 6 being fitted together is a square with a top surface H of 342.503mm to 343.297mm, and the thickness of the core-filling assembly is 101.125 to 102.075mm.

[0026] Furthermore, during the well repair operation, the utility model is suitable for the well repair turntable model ZP-175, and the two connecting blocks 6 are placed in the square hole on the top of the well repair turntable, and then the drill pipe 1 is lifted so that the drill pipe 1 is aligned with the positioning groove 7 on the connecting block 6, and the driving key 2 on the drill pipe 1 is aligned with the driving groove 8. After the alignment, the drill pipe 1 and the driving key 2 are moved downward, and the drill pipe 1 and the driving key 2 are respectively inserted into the positioning groove 7 and the driving groove 8. When the well repair turntable drives the connecting block 6 to rotate, the connecting block 6 drives the driving key 2 to perform a circular motion through the driving groove 8, thereby driving the rotating rod 1 to rotate through the driving key 2.

[0027] Specifically, a first connecting pile 9 is symmetrically fixedly connected to the top center of one connecting block 6, and a second connecting pile 10 is symmetrically fixedly connected to the top center of the other connecting block 6. A fixing component is provided on the side opposite to the first connecting pile 9 and the second connecting pile 10.

[0028] Specifically, the fixing assembly includes a bolt 11 threadedly inserted and connected to the middle of the first connecting pile 9, the bolt 11 threadedly inserted and connected to the middle of the second connecting pile 10, and a nut 12 is provided on one side of the second connecting pile 10, and the nut 12 is threadedly sleeved on one end of the bolt 11.

[0029] Furthermore, when it is necessary to fix the position between the two connecting blocks 6, first fit the two connecting blocks 6 on one side with the positioning groove 7, then pass one side of the bolt 11 through the first connecting pile 9 and the second connecting pile 10, and finally take out the nut 12 and thread it on the end of the bolt 11, and fix the two first connecting piles 9 and the two second connecting piles 10 in turn, so that the two connecting blocks 6 are fixed through the two first connecting piles 9 and the second connecting piles 10.

[0030] Specifically, a handle 13 for moving the position of the connecting block 6 is symmetrically fixedly connected to the top center of the connecting block 6.

[0031] It should be noted that the handle 10 is located at the top of the connecting block 6. The handle 10 is fixed to the top of the connecting block 6 by welding. There are two handles on each connecting block 6 for lifting the connecting block 6. The handle 10 is 100 mm long and 50 mm high.

[0032] Specific example one:

[0033] The casing is milled to Φ139.7mm, and the outer diameter of the coupling is Φ153.67mm;

[0034] As a preferred embodiment of the above, the Φ193.67×9.52mm casing BCSG is the main body, the diameter d is 171.5mm, the main body outer diameter D is 193.67mm, and the outer diameter of the casing milling pipe coupling is 215.9mm;

[0035] Further preferably, the diagonal width DC of the driving part is 217.67 mm;

[0036] Further preferably, the diameter D′ of the main body through hole is 193.273 mm to 194.06 mm;

[0037] More preferably, the through hole diagonal width DC' is 217.273 mm to 218.067 mm.

[0038] Specific to this embodiment 2:

[0039] Milling Φ127.0mm casing, outer diameter of coupling Φ141.3mm;

[0040] As a preferred embodiment of the above, the Φ177.8×8.05mm casing BCSG is the main body, the diameter d is 158.5mm, the main body outer diameter D is 177.8mm, and the outer diameter of the casing milling pipe coupling is 194.46mm;

[0041] Further preferably, the diagonal width DC of the driving part is 201.8 mm;

[0042] Further preferably, the diameter D′ of the main body through hole is Φ177.403 mm to 178.197 mm;

[0043] More preferably, the through hole diagonal width DC' is 201.403 mm to 202.197 mm.

[0044] During the milling operation, the turntable drives the square tile, the square tile drives the bushing assembly, the bushing assembly drives the drill rod 1 provided with the driving key 2, and the drill rod 1 provided with the driving key 2 drives the milling drill to rotate to complete the torque transmission.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A six-key active drill pipe assembly for overhauling oil, gas and water wells, comprising a drill pipe (1), characterized in that: A driving key (2) for rotating the drill rod (1) is fixedly connected to the outer wall of the drill rod (1) in a symmetrical manner, and the outer wall of the driving key (2) is sleeved with a square bushing assembly, a first thread (3) is provided at the bottom of the drill rod (1), a second thread (4) is provided at the top of the drill rod (1), and a threaded sleeve (5) is threadedly sleeved on the outer wall of the second thread (4).

2. A six-key active drill pipe assembly for overhauling oil, gas and water wells according to claim 1, characterized in that: The bushing assembly comprises connecting blocks (6) centrally and symmetrically arranged on both sides of a drill rod (1); a positioning groove (7) adapted to the drill rod (1) is provided on one side of the connecting block (6); and the drill rod (1) is inserted and connected inside the positioning groove (7).

3. A six-key active drill pipe assembly for overhauling oil, gas and water wells according to claim 2, characterized in that: A driving groove (8) adapted to the driving key (2) is symmetrically provided on the inner wall of one side of the positioning groove (7), and the driving key (2) is inserted and connected inside the driving groove (8).

4. A six-key active drill pipe assembly for overhauling oil, gas and water wells according to claim 3, characterized in that: A first connection pile (9) is symmetrically fixedly connected to the top center of one of the connection blocks (6), and a second connection pile (10) is symmetrically fixedly connected to the top center of the other connection block (6), and a fixing component is provided on the side of the first connection pile (9) opposite to the second connection pile (10).

5. A six-key active drill pipe assembly for overhauling oil, gas and water wells according to claim 4, characterized in that: The fixing assembly comprises a bolt (11) threadedly inserted into the middle of a first connecting pile (9), the bolt (11) threadedly inserted into the middle of a second connecting pile (10), a nut (12) is provided on one side of the second connecting pile (10), and the nut (12) is threadedly sleeved on one end of the bolt (11).

6. A six-key active drill pipe assembly for overhauling oil, gas and water wells according to claim 2, characterized in that: A handle (13) for moving the position of the connecting block (6) is fixedly and symmetrically connected to the top center of the connecting block (6).

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