CN219691499U - Drilling fluid cooling device - Google Patents

Abstract

The utility model provides a drilling fluid cooling device, which comprises a shell, wherein a heat exchange assembly is arranged in the shell, the heat exchange assembly comprises a liquid inlet pipe arranged in the shell and a cooling liquid pipe attached to the surface of the liquid inlet pipe, a driving wheel driven by drilling fluid is arranged in the liquid inlet pipe, a cooling pump for conveying cooling medium is arranged in the cooling liquid pipe, the driving wheel is in transmission connection with the cooling pump, and the cooling of the drilling fluid in the liquid inlet pipe is realized through the attachment of the liquid inlet pipe and the surface of the cooling liquid pipe. The cooling liquid pipe and the liquid inlet pipe are respectively arranged in the shell, so that fault points can be found in time, and the convenience for maintaining the cooling liquid pipe and the liquid inlet pipe is improved; through drive wheel and cooling pump transmission connection, feed liquor pipe and coolant liquid pipe simultaneous working match corresponding coolant liquid according to the drilling fluid velocity of flow of feed liquor pipe, improve cooling effect when guaranteeing that the heat transfer effect is stable to extra equipment setting and extra resource consumption have been reduced.

Description

Drilling fluid cooling device

Technical Field

The utility model relates to a drilling fluid cooling device, and belongs to the field of drilling fluid treatment generated in the drilling process.

Background

Drilling is performed by a drilling machine, and drilling fluid is required to be used in the drilling process. At present, along with the construction of an ultra-deep well, the bottom temperature rises along with the increase of the stratum depth, for example, the construction temperature of drilling fluid of a deep well exceeds 236 ℃, so that the circulation temperature of the drilling fluid rises, and organic additives in the drilling fluid can be gradually degraded and lose efficacy, thereby causing the aging and deterioration of the drilling fluid and the performance deterioration; the high temperature not only affects the performance of the drilling fluid, but also further affects the service life of the downhole tool; in addition, the too high temperature of the drilling fluid brings certain potential safety hazards or risks in the aspects of safe production and rapid performance detection, so that forced cooling equipment is required to be used for cooling the drilling fluid.

The existing drilling fluid cooling equipment generally realizes cooling treatment on the drilling fluid through external connection with other cooling equipment in the use process, for example, the cooling fluid continuously flows through an external connection vacuum pump, so that the cooling efficiency of the drilling fluid is improved. When carrying out cooling treatment to drilling fluid, because the cooling tube and the equipment of extra setting have more resource consumption, and operate and use inconvenient, reduced work efficiency to a certain extent, bring inconvenience for drilling fluid cooling treatment.

The patent of China with publication number CN215927297U and publication date 2022, 3 months and 1 days discloses a drilling fluid cooling device, which is characterized in that a cooling water internal circulation device with a stirring mechanism is arranged in a cooling box body to realize cooling of drilling fluid from the inside, and an automatic water changing mechanism is arranged to automatically change water of high-temperature cooling water in the cooling process. In the operation process, the device automatically changes the cooling water according to the preset temperature, but before the preset temperature is reached, the cooling effect of the device on the drilling fluid is gradually reduced along with the increase of the temperature of the cooling water, and frequent water change causes the fluctuation of the temperature of the cooling water, so that the stable cooling effect is difficult to maintain, and the working efficiency is reduced to a certain extent; in the use, because the cooling water internal circulation pipeline is immersed in the drilling fluid in the cooling box, if the circulating device leaks, the problem that the leakage point is difficult to find and is inconvenient to maintain exists.

Disclosure of Invention

The utility model aims to provide a drilling fluid cooling device which is used for solving the problems of extra resource consumption, unstable heat exchange effect and inconvenient maintenance in the prior art.

In order to achieve the above purpose, the drilling fluid cooling device in the utility model adopts the following technical scheme:

the utility model provides a drilling fluid cooling device, includes the casing, set up the heat transfer subassembly in the casing, the heat transfer subassembly is including setting up the feed liquor pipe in the casing, with the coolant pipe of feed liquor pipe surface laminating, dispose in the feed liquor pipe through drilling fluid driven drive wheel, dispose the cooling pump that is used for carrying cooling medium in the coolant pipe, drive wheel and cooling pump transmission are connected.

The beneficial effects of the technical scheme are that: the drilling fluid in the liquid inlet pipe is cooled through the joint of the liquid inlet pipe and the surface of the cooling liquid pipe; the cooling liquid pipe and the liquid inlet pipe are respectively arranged in the shell, so that fault points can be found in time, and the convenience for maintaining the cooling liquid pipe and the liquid inlet pipe is improved; through drive wheel and cooling pump transmission connection, feed liquor pipe and coolant liquid pipe simultaneous working match corresponding coolant liquid according to the drilling fluid velocity of flow of feed liquor pipe, improve cooling effect when guaranteeing that the heat transfer effect is stable to extra equipment setting and extra resource consumption have been reduced.

Further, the cooling pump is a plunger pump and is connected with the driving wheel through a space link mechanism.

The beneficial effects of the technical scheme are that: the driving wheel drives the cooling pump to do reciprocating motion on the inner wall of the cooling liquid pipe through the space connecting rod mechanism, so that cooling liquid in the cooling liquid pipe synchronously flows along with the flow of drilling liquid in the liquid inlet pipe, and stable heat exchange can be realized without setting additional power for the extraction of the cooling liquid.

Further, the driving wheel is in transmission connection with an impeller arranged in the fluid infusion tube.

The beneficial effects of the technical scheme are that: the impeller realizes rotation through the power transmission of the driving wheel, and the new drilling fluid is supplemented.

Further, the outlet end of the liquid supplementing pipe is communicated with the liquid inlet pipe.

The beneficial effects of the technical scheme are that: the outlet end of the fluid supplementing pipe is communicated with the fluid inlet pipe, so that new drilling fluid and the drilling fluid to be cooled or cooled are conveniently mixed, and the cooling effect of the drilling fluid is further improved.

Further, the impeller is in transmission connection with a driving wheel through a gear transmission mechanism.

The beneficial effects of the technical scheme are that: the structure is simple, and the power transmission mechanism is easy to realize.

Further, the gear transmission mechanism is a speed-increasing transmission mechanism.

The beneficial effects of the technical scheme are that: the impeller is driven to rotate at a higher speed through the speed rising of the gear transmission mechanism so as to generate centrifugal force, so that new drilling fluid is more conveniently supplemented.

Further, the liquid inlet pipe and the cooling liquid pipe are S-shaped and are arranged at intervals.

The beneficial effects of the technical scheme are that: the liquid inlet pipe and the cooling liquid pipe are S-shaped, so that the flowing process of the drilling fluid in the liquid inlet pipe and the cooling liquid in the cooling liquid pipe is longer, and natural cooling can be performed; meanwhile, through the arrangement that the surfaces of the liquid inlet pipe and the cooling liquid pipe are attached and staggered at intervals, heat of drilling fluid in the liquid inlet pipe is further carried away through cooling liquid, and the cooling effect is improved.

Further, the side wall of the shell is provided with a vent hole.

The beneficial effects of the technical scheme are that: through set up the ventilation hole at the casing lateral wall for keep the circulation of air with outside in the casing, play certain heat dissipation effect to the feed liquor pipe, indirectly improve the cooling effect.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 in the present utility model.

In the figure: 11. a housing; 12. a suction pump; 13. a liquid inlet pipe; 14. a coolant tube; 21. a first shaft; 22. a driving wheel; 23. a fixed block; 24. a connecting plate; 25. a slide block; 26. a one-way liquid inlet valve; 27. a first one-way liquid outlet valve; 28. a first frame; 31. a fluid supplementing pipe; 32. a second frame; 33. a first gear; 34. a second shaft; 35. a second gear; 36. an impeller; 37. and a second one-way liquid outlet valve.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

It is noted that relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" or the like does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The features and capabilities of the present utility model are described in further detail below in connection with the examples.

Example 1 of the drilling fluid cooling apparatus provided in the present utility model:

as shown in fig. 1, the drilling fluid cooling device comprises a shell 11, wherein a heat exchange assembly is arranged in the shell 11, the heat exchange assembly comprises a liquid inlet pipe 13 arranged in the shell 11, and a cooling liquid pipe 14 attached to the surface of the liquid inlet pipe 13 is provided with a pipe section extending out of the shell 11 so as to be convenient for connection of a cooling liquid source; the inlet end of the liquid inlet pipe 13 is connected with a suction pump 12 which is arranged at the top of the shell 11 and is used for pumping drilling fluid. The cooling liquid pipe 14 is attached to the surface of the liquid inlet pipe 13 to be fully contacted, so that the heat exchange efficiency is improved, and the cooling effect on drilling fluid is finally improved. The side of the housing 11 near the bottom is also provided with a coolant tube 14 and an outlet (not shown) of the inlet tube 13.

In the embodiment, the cooling liquid pipe 14 and the liquid inlet pipe 13 are both in an S shape, so that the flowing process of the drilling fluid in the liquid inlet pipe 13 is longer, and natural cooling can be performed; meanwhile, the surface of the liquid inlet pipe 13 is attached to the cooling liquid pipe 14, so that cooling liquid in the cooling liquid pipe 14 exchanges heat with drilling liquid in the liquid inlet pipe 13, and cooling of the drilling liquid is achieved. In addition, the side of casing 11 still is provided with ventilation louvre for casing 11 inside and outside air circulation play the heat dissipation effect to feed liquor pipe 13, have indirectly improved the cooling efficiency of drilling fluid.

The driving wheel 22 driven by drilling fluid is disposed in the fluid inlet pipe 13, in this embodiment, the fluid inlet pipe 13 is provided with a space for the driving wheel 22 to rotate, the driving wheel 22 is a first shaft 21 rotatably disposed in the fluid inlet pipe 13 and is uniformly provided with a plurality of baffles along the circumferential direction, two ends of the first shaft 21 respectively penetrate through the pipe wall of the fluid inlet pipe 13, and in order to avoid overflow of the drilling fluid, the positions where the first shaft 21 and the side wall of the fluid inlet pipe 13 are in rotational contact are all provided with sealing members. In the present embodiment, the driving wheel 22 and the first shaft 21 are fixed by welding.

A cooling pump for conveying a cooling medium is arranged in the cooling liquid pipe 14, and the driving wheel 22 is in driving connection with the cooling pump. In this embodiment, the cooling pump is a plunger pump, and is connected to the driving wheel 22 through a space link mechanism. The space link mechanism adopts a crank slide block mechanism, specifically, one end of the first shaft 21 is provided with a fixed block 23 which is fixedly arranged through welding, one end of the fixed block 23, which is far away from the center of the first shaft 21, is rotationally connected with one end of the connecting plate 24, the other end of the connecting plate 24 is rotationally connected with a slide block 25, and one end of the slide block 25, which is far away from the connecting plate 24, is slidingly embedded into the coolant tube 14. The first one-way liquid outlet valve (27) and the one-way liquid inlet valve (26) which are arranged in the cooling liquid pipe 14 are respectively arranged at two sides of the sliding block 25, and form a plunger pump together with the pipe wall of the cooling liquid pipe 14. In order to improve the stability of the movement of the slider 25, one end of the slider 25 connected to the connection plate 24 is slidably inserted into the first frame 28, and the first frame 28 is provided with a space for the rotation of the connection plate 24, and the first frame 28 is fixedly connected to the housing 11.

In this embodiment, in order to realize the reciprocating movement of the push-pull slider 25, the first shaft 21 is disposed parallel to the slider 25, and the central axes of the two shafts are not coaxial. Specifically, the driving wheel 22 rotates to drive the first shaft 21 to rotate, the first shaft 21 rotates and drives the fixed block 23 to rotate, and the connecting plate 24 synchronously rotates with the central axes of the first shaft 21 and the sliding block 25 respectively while the fixed block 23 rotates, so as to pull and push the sliding block 25 to reciprocate on the side wall of the coolant tube 14. Furthermore, in order to avoid coolant or drilling fluid from escaping from the pipeline, the slider 25 is provided with a seal at a position in sliding contact with the side wall of the coolant tube 14.

The casing 11 is also provided with a fluid infusion assembly for supplementing drilling fluid, and the fluid infusion assembly comprises a fluid infusion tube 31 arranged in the casing 11, wherein the fluid infusion tube 31 is provided with a tube section extending out of the casing 11. The impeller 36 arranged in the fluid infusion tube 31 is connected with the driving wheel 22 through a gear transmission mechanism in a transmission way, specifically, the second shaft 34 is in rotary contact with the side wall of the fluid infusion tube 31, the impeller 36 is fixedly arranged at one end of the second shaft 34, the second shaft 34 is rotatably arranged in the second frame 32, the other end of the second shaft 34 is fixedly provided with a second gear 35, the second gear 35 is meshed with the first gear 33 arranged at one end of the first shaft 21, and the first gear 33 and the driving wheel 22 are coaxially arranged. In this embodiment, in order to improve the fluid supplementing effect, the gear transmission mechanism adopts a speed-increasing transmission mechanism, specifically, the rotational speed of the second gear 35 is greater than the rotational speed of the first gear 33, that is, the transmission ratio of the first gear 33 to the second gear 35 is less than 1, and the second gear 35 is driven to rotate rapidly when the first gear 33 rotates, so as to drive the impeller 36 to rotate to generate centrifugal force, and the effect of the centrifugal pump is generated to supplement new drilling fluid to the fluid inlet pipe 13. The second frame 32 is fixedly connected to the inner wall of the housing 11, so as to improve the stability of the second shaft 34. In addition, in order to avoid overflow of drilling fluid from the pipeline, a seal is provided at the position where the second shaft 34 is in rotational contact with the side wall of the fluid replacement pipe 31.

The outlet end of the fluid infusion tube 31 is communicated with the outlet end of the fluid inlet tube 13, and in order to prevent the drilling fluid in the fluid inlet tube 13 from flowing into the fluid infusion tube 31 in a countercurrent way through a pipeline, a second one-way liquid outlet valve 37 is further arranged in the fluid infusion tube 31.

As shown in fig. 1, when in use, drilling fluid is conveyed into the fluid inlet pipe 13 through the suction pump 12, and when the drilling fluid enters the fluid inlet pipe 13, the driving wheel 22 is hit to rotate, so that the first shaft 21 is driven to rotate, the first shaft 21 rotates and simultaneously drives the fixed block 23 to rotate, and the fixed block 23 rotates and simultaneously pulls and pushes the sliding block 25 to slide back and forth on the side wall of the cooling liquid pipe 14 through the connecting plate 24. When the slide block 25 slides leftwards, namely moves in a direction away from the coolant pipe 14, negative pressure is generated between the one-way liquid inlet valve 26 and the first one-way liquid outlet valve 27, so that the one-way liquid inlet valve 26 is opened, and cooling liquid in the coolant pipe 14 is sucked into a cavity between the one-way liquid inlet valve 26 and the first one-way liquid outlet valve 27 through the one-way liquid inlet valve 26; when sliding rightward, i.e. moving in a direction approaching the coolant pipe 14, by means of the slider 25, the first one-way outlet valve 27 is opened, and the coolant between the one-way inlet valve 26 and the first one-way outlet valve 27 is discharged through the first one-way outlet valve 27. The reciprocating motion of the sliding block 25 can keep the cooling liquid in the cooling liquid pipe 14 in a circulating state, and meanwhile, the flow rate of the cooling liquid in the cooling liquid pipe 14 can be dynamically changed along with the flow rate of the drilling liquid in the liquid inlet pipe 13, so that the cooling effect is improved. The cross sections of the liquid inlet pipe 13 and the cooling liquid pipe 14 are circular, and the liquid inlet pipe 13 and the cooling liquid pipe 14 are integrally arranged at intervals in an S shape, so that the surfaces of the liquid inlet pipe 13 and the cooling liquid pipe 14 are bonded and fully contacted, the full heat exchange between drilling fluid and cooling liquid is facilitated, and the cooling effect on the drilling fluid is improved.

As shown in fig. 1, when in use, when the first shaft 21 rotates, the first gear 33 is driven to rotate, the second gear 35 and the second shaft 34 are driven to rotate in the second frame 32 by meshing with the second gear 35, the impeller 36 is driven to rotate in the fluid supplementing pipe 31 while the second shaft 34 rotates to generate centrifugal force, and then the second one-way fluid outlet valve 37 is opened to convey new drilling fluid in the fluid supplementing pipe 31 into the fluid inlet pipe 13 and mix with the drilling fluid after cooling treatment, and the drilling fluid is further cooled while being supplemented.

Other embodiments of the drilling fluid cooling apparatus provided in the present utility model:

as another embodiment 2 of the drilling fluid cooling device, unlike embodiment 1, in this embodiment, a fluid supplementing unit may not be provided.

As another embodiment 3 of the drilling fluid cooling device, unlike embodiment 1, in this embodiment, the reciprocation of the slider may be achieved by a cam mechanism, and in other embodiments, a mechanism that converts circular motion into horizontal reciprocation may be employed.

As another embodiment 4 of the drilling fluid cooling device, unlike embodiment 1, in this embodiment, a plurality of coolant pipes may be provided on the same plane.

As another embodiment 5 of the drilling fluid cooling device, unlike embodiment 1, in this embodiment, the baffle plate and the first shaft may be connected by providing a groove on the first shaft, and the baffle plate and the groove may be connected by a clamping connection, and in other embodiments, the baffle plate and the groove may be connected by other removable connection.

As another embodiment 6 of the drilling fluid cooling device, unlike embodiment 1, in this embodiment, the outlet of the fluid replenishment pipe may be provided at the inlet end of the fluid intake pipe.

As another embodiment 7 of the drilling fluid cooling device, unlike embodiment 1, in this embodiment, the second one-way fluid outlet valve is not provided in the outlet direction of the fluid replenishing pipe.

In another embodiment 8 of the drilling fluid cooling apparatus, unlike embodiment 1, the second housing is not provided in this embodiment.

As another embodiment 9 of the drilling fluid cooling device, unlike embodiment 1, in this embodiment, the cross-section of the intake pipe and the coolant pipe may be rectangular, racetrack-shaped, or other shapes that easily increase the contact area.

The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. The utility model provides a drilling fluid cooling device, includes casing (11), its characterized in that, be provided with heat exchange assembly in casing (11), heat exchange assembly is including setting up feed liquor pipe (13) in casing (11), with coolant pipe (14) of feed liquor pipe (13) surface laminating, be configured with in feed liquor pipe (13) through drilling fluid driven drive wheel (22), be configured with the cooling pump that is used for carrying cooling medium in coolant pipe (14), drive wheel (22) are connected with the cooling pump transmission.

2. Drilling fluid cooling device according to claim 1, characterized in that the cooling pump is a plunger pump, connected to a drive wheel (22) by a spatial linkage.

3. Drilling fluid cooling device according to claim 1, characterized in that the drive wheel (22) is in driving connection with an impeller (36) arranged in a fluid-filled pipe (31).

4. A drilling fluid cooling device according to claim 3, characterized in that the outlet end of the fluid replacement pipe (31) communicates with the fluid intake pipe (13).

5. A drilling fluid cooling arrangement according to claim 3, characterized in that the impeller (36) is drivingly connected to the drive wheel (22) by means of a gear transmission.

6. The drilling fluid cooling apparatus of claim 5 wherein the gear train is a step-up gear train.

7. Drilling fluid cooling device according to claim 1, characterized in that the inlet pipe (13) and the coolant pipe (14) are S-shaped and spaced apart.

8. Drilling fluid cooling device according to claim 1, characterized in that the housing (11) side wall is provided with ventilation holes.