Drill string adapter with nozzle

Abstract

The utility model relates to the technical field of well drilling tools, in particular to a drill string adapter with nozzles, and aims to solve the technical problems that in the prior art, the nozzles need to be independently and manually adjusted, each adapter is provided with a plurality of nozzles, the opening degree of each nozzle is difficult to keep consistent, and the flow adjustment is inaccurate. Comprising a drill column, an outer ring groove, an inner ring groove, a sliding groove, an inner ring, an outer ring, a rotating rod, a nozzle channel, liquid inlet holes, positioning holes, a positioning rod and a locking mechanism, the inner ring is driven to rotate by rotating the outer ring, the positioning rod is locked after being inserted into other positioning holes of the outer ring, and when the inner ring rotates, multiple liquid inlet hole sets rotate synchronously. The overlapping angles of the different liquid inlet holes and the nozzle channels are different, the flow of drilling fluid entering the nozzle channels is changed, the overlapping angles of the multiple sets of nozzle channels are adjusted synchronously and simultaneously, the flow of the drilling fluid in each nozzle channel is consistent, and accurate control over flow adjustment is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drilling tools, and specifically to a drill string swivel joint with nozzles. BACKGROUND

[0002] With the gradual extension of oil, natural gas and other resource exploration and development to complex formations, deep sea areas and the like, the requirements for drilling efficiency and safety are becoming higher and higher. The traditional drill string structure is difficult to meet the requirements of efficient chip removal and stable wellbore pressure in these complex environments. For example, during the drilling process of high-angle wells and horizontal wells, cuttings are prone to accumulate at the low side of the wellbore, and more effective methods are needed to carry the cuttings out of the wellbore.

[0003] The continuous increase in drilling depth also makes the downhole environment more complex and variable, such as changes in temperature and pressure. In order to adapt to these changes, a device is needed that can optimize the flow of drilling fluid, and the drill string swivel joint with nozzles has emerged as the times require. It can better control the direction and flow of drilling fluid injection to cope with complex downhole environments.

[0004] During normal drilling, the annular return speed changes significantly at the change in the outer diameter of the drill string, which has a great impact on drilling operations. Part of the drilling fluid flows downward through the lower drill string and enters the lower annulus, and the other part of the drilling fluid directly passes through the nozzles in the passage and enters the upper annulus with the drilling fluid returning from the lower annulus. By adjusting the size of the nozzles, the return speed of the drilling fluid in the lower annulus can be controlled, thereby achieving the same return speed of the upper and lower annuli and reducing the change in the annular return speed.

[0005] The nozzles of the prior art need to be manually adjusted separately, and each swivel joint has multiple nozzles, making it difficult to maintain consistent opening of each nozzle and inaccurate flow adjustment. UTILITY MODEL CONTENTS

[0006] The utility model discloses a drill string swivel joint with nozzles to solve the technical problems of the prior art, i.e. the nozzles need to be manually adjusted separately, and each swivel joint has multiple nozzles, making it difficult to maintain consistent opening of each nozzle and inaccurate flow adjustment.

[0007] To achieve the above object, the utility model provides the following technical scheme: a drill string swivel joint with nozzle, which comprises: drill string, the outer wall and the inner wall of the same position of the drill string are respectively provided with outer ring groove and inner ring groove, the outer ring groove and the inner ring groove are connected through the sliding groove, the inner ring groove is matched with the inner ring in the gap, the outer surface of the outer ring groove is matched with the outer ring in the gap, the inner ring and the outer ring are connected through the rotating rod, the rotating rod is connected in the sliding groove, the outer wall of the drill string is provided with a plurality of nozzle channels connected with the inside and the outside, the inner ring is provided with a plurality of groups of liquid inlet hole groups corresponding to the number of nozzle channels, each group of liquid inlet hole group comprises a plurality of liquid inlet holes, the lower surface of the outer ring is provided with a plurality of positioning holes, the inner vertical sliding connection of the lower part of the outer ring groove of the drill string is provided with a positioning rod, the positioning rod can be inserted into the positioning hole, the positioning rod can be locked through the locking mechanism, the locking mechanism is connected to the drill string, when the positioning rod is located in different positioning holes, the inner end of the nozzle channel and the different liquid inlet holes in the same group of liquid inlet holes are connected, and the overlapping angle is different when connected.

[0008] Preferably, the locking mechanism comprises a spring hole, the spring hole is concentrically arranged in the middle part of the positioning rod, the lower part of the spring hole is connected with the pull groove, the lower end of the positioning rod is located in the pull groove, the outer part of the positioning rod is connected with a spring fixing piece, the spring fixing piece is connected in the spring hole in the sliding mode, the positioning rod is sleeved with a pull spring, and the two ends of the pull spring are connected with the upper surface of the spring fixing piece and the inner top wall of the spring hole respectively.

[0009] Preferably, the outer diameter of the outer ring is smaller than the outer diameter of the drill string.

[0010] Preferably, the upper and lower ends of the drill string are respectively provided with inner tapered threads and outer tapered threads.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The locking mechanism is used for releasing the locking of the positioning rod to the outer ring, rotating the outer ring to drive the inner ring to rotate, inserting the positioning rod into other positioning holes of the outer ring and locking again, rotating the inner ring, and the plurality of groups of liquid inlet hole groups are synchronously rotated, when the positioning rod is located in different positioning holes, the overlapping angles of the different liquid inlet holes and the nozzle channels are different, the flow of the drilling fluid into the nozzle channel is changed, the overlapping angles of the plurality of nozzle channels are synchronously and simultaneously adjusted, the flow of the drilling fluid in each nozzle channel is consistent, the total flow can be obtained by multiplying the single flow and the number of nozzles, the overlapping angles are adjusted according to the required total flow, and the accurate control of the flow adjustment can be realized.

[0013] 2. The outer diameter of the outer ring is smaller than the outer diameter of the drill string, the friction between the outer ring and the well wall is reduced, the positioning rod is prevented from being broken under stress, and the joint is prevented from being damaged. ACCURACY

[0014] Figure 1 The structure of the utility model is shown Figure One ;

[0015] Figure 2 Structure section schematic view of the utility model;

[0016] Figure 3 Structure section schematic view of the utility model Figure 2 ;

[0017] Figure 4 Structure section schematic view of the utility model Figure Two ;

[0018] Figure 5 Structure section schematic view of the utility model Figure Three .

[0019] Figure 6 Structure perspective view of the utility model Figure One .

[0020] Figure 7 Structure perspective view of the utility model Figure Two .

[0021] In the figure: drill string 1;Outer ring groove 2;Inner ring groove 3;Slotted 4;Inner ring 5;Outer ring 6;Rotary rod 7;Nozzle channel 8;Liquid inlet hole 9;Positioning hole 10;Positioning rod 11;Locking mechanism 12;Spring hole 121;Pulling groove 122;Spring fixing plate 123;Tension spring 124. Specific implementation

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] The rotary connection in the device refers to the rotary connection by baking the bearing on the shaft, the shaft or the shaft hole is provided with spring retainer groove, the axial fixation of the bearing is realized by clamping the elastic retainer in the retainer groove, and the rotation is realized. The articulated refers to the movable connection mode on the connecting parts such as hinge, pin shaft and short shaft.

[0024] The utility model will be described in detail below with reference to the drawings. Embodiment

[0025] The following will be combined with the drawings Figures 1-7The embodiment discloses a drill string swivel joint with a nozzle, which comprises a drill string 1, an outer wall and an inner wall of the drill string 1 are provided with an outer ring groove 2 and an inner ring groove 3 respectively at the same position, the outer ring groove 2 and the inner ring groove 3 are connected through a sliding groove 4, an inner ring 5 is gap-fitted in the inner ring groove 3, an outer ring 6 is gap-fitted on the outer surface of the outer ring groove 2, the inner ring 5 and the outer ring 6 are connected through a rotating rod 7, the rotating rod 7 is slidingly connected in the sliding groove 4, a plurality of nozzle channels 8 are formed in the outer wall of the drill string 1 and are connected with the inside and outside, a plurality of liquid inlet hole groups corresponding to the number of the nozzle channels 8 are formed on the inner ring 5, each liquid inlet hole group comprises a plurality of liquid inlet holes 9, a plurality of positioning holes 10 are formed on the lower surface of the outer ring 6, a positioning rod 11 is slidingly connected in the drill string 1 at the lower part of the outer ring groove 2 in a vertical mode, the positioning rod 11 can be inserted into the positioning hole 10, the positioning rod 11 can be locked through a locking mechanism 12, the locking mechanism 12 is connected to the drill string 1, when the positioning rod 11 is located in different positioning holes 10, the inner end of the nozzle channel 8 is connected with different liquid inlet holes 9 in the same liquid inlet hole group in a communication mode, and the overlapping angles are different when the communication is realized.

[0026] When the adjustment is performed, the positioning rod 11 is pulled out of the positioning hole 10 through the locking mechanism 12, the locking of the positioning rod 11 on the outer ring 6 is released, the outer ring 6 is rotated, the inner ring 5 is rotated through the rotating rod 7, the outer ring 6 is locked again after the positioning rod 11 is inserted into other positioning holes 10 of the outer ring 6, a plurality of liquid inlet hole groups are synchronously rotated when the inner ring 5 is rotated, as shown in Figure 6 and Figure 7 , the overlapping angles of different liquid inlet holes 9 in the same liquid inlet hole group and the inner end of the nozzle channel 8 are different, the flow of the drilling fluid entering the nozzle channel 8 is changed, the overlapping angles of a plurality of nozzle channels 8 are synchronously and simultaneously adjusted, the flow of the drilling fluid in each nozzle channel 8 is consistent, and the accurate control of the flow adjustment is realized.

[0027] The locking mechanism 12 comprises a spring hole 121, the spring hole 121 is concentrically arranged in the middle part of the positioning rod 11, the lower part of the spring hole 121 is connected with a pulling groove 122, the lower end of the positioning rod 11 is located in the pulling groove 122, a spring fixing sheet 123 is connected to the outside of the positioning rod 11, the spring fixing sheet 123 is slidingly connected in the spring hole 121, a pulling spring 124 is sleeved on the positioning rod 11, and two ends of the pulling spring 124 are respectively connected with the upper surface of the spring fixing sheet 123 and the inner top wall of the spring hole 121.

[0028] The lower end of the positioning rod 11 is pulled down by switching the positioning hole 10, the positioning rod 11 drives the pulling spring 124 to be stretched through the spring fixing sheet 123, the outer ring 6 is rotated to make the positioning rod 11 point to the appropriate positioning hole 10, the lower end of the positioning rod 11 is loosened and the outer ring 6 is slightly rotated, under the action of the reset force of the pulling spring 124, the positioning rod 11 automatically enters the positioning hole 10, and the adjustment is completed.

[0029] The outer diameter of the outer ring 6 is smaller than the outer diameter of the drill string 1.

[0030] Reduce the friction between the outer ring 6 and the well wall, prevent the positioning rod 11 from being broken under force, and prevent the joint from being damaged.

[0031] The inner tapered thread and the outer tapered thread are arranged at the upper end and the lower end of the drill string 1 respectively.

[0032] Conveniently connected with the drill string.

[0033] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection mode in the prior art, which will not be described in detail here.

[0035] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A drill string swivel with a nozzle, characterized by: The utility model relates to a drilling string (1), the outer wall and the inner wall of the same position of drilling string (1) are respectively provided with outer ring groove (2) and inner ring groove (3), and the outer ring groove (2) and the inner ring groove (3) are connected through sliding groove (4), the inner ring (5) is matched with the clearance in the inner ring groove (3), the outer ring (6) is matched with the clearance on the outer surface of outer ring groove (2), the inner ring (5) and the outer ring (6) are connected through rotating rod (7), the rotating rod (7) is slidably connected in the sliding groove (4), the outer wall of drilling string (1) is provided with multiple nozzle channels (8) that are connected with the inside and outside, the inner ring (5) is provided with multiple groups of liquid inlet hole groups corresponding to the number of nozzle channel (8), each group of liquid inlet hole group includes multiple liquid inlet holes (9), the lower surface of outer ring (6) is provided with multiple positioning holes (10), the inner vertical sliding connection of the lower part of outer ring groove (2) is provided with positioning rod (11) in drilling string (1), the positioning rod (11) can be inserted into the positioning hole (10), the positioning rod (11) can be locked through locking mechanism (12), the locking mechanism (12) is connected on drilling string (1), when the positioning rod (11) is located in different positioning hole (10), the inner end of nozzle channel (8) is connected with different liquid inlet holes (9) in the same liquid inlet hole group, and the overlapping angle is different when being connected. The locking mechanism (12) includes spring hole (121), the spring hole (121) is concentrically arranged in the middle part of positioning rod (11), the lower part of spring hole (121) is connected with pull groove (122), the lower end of positioning rod (11) is located in pull groove (122), the outer part of positioning rod (11) is connected with spring fixing piece (123), spring fixing piece (123) is slidably connected in spring hole (121), pull spring (124) is sleeved on the positioning rod (11), and the two ends of pull spring (124) are connected with the upper surface of spring fixing piece (123) and the inner top wall of spring hole (121) respectively.

2. A drill string swivel according to claim 1, characterized in that: The outer diameter of the outer ring (6) is less than the outer diameter of the drilling string (1).

3. A drill string swivel according to claim 1, characterized in that: The upper and lower ends of the drilling string (1) are respectively provided with inner taper thread and outer taper thread.

4. A drill string swivel according to claim 1, characterized in that: ​

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