CN111810067B - Drilling fluid cooling system - Google Patents
Drilling fluid cooling system Download PDFInfo
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- CN111810067B CN111810067B CN202010629091.0A CN202010629091A CN111810067B CN 111810067 B CN111810067 B CN 111810067B CN 202010629091 A CN202010629091 A CN 202010629091A CN 111810067 B CN111810067 B CN 111810067B
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- 238000001816 cooling Methods 0.000 title claims abstract description 152
- 238000005553 drilling Methods 0.000 title claims abstract description 113
- 239000012530 fluid Substances 0.000 title claims abstract description 105
- 239000011229 interlayer Substances 0.000 claims abstract description 45
- 239000012809 cooling fluid Substances 0.000 claims abstract description 7
- 239000000110 cooling liquid Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 8
- 239000002002 slurry Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of oil and gas drilling, in particular to a drilling fluid cooling system, which comprises a wellhead overflow pipe connected with a wellhead, a diversion box connected with the wellhead overflow pipe, a vibrating screen connected with the diversion box and a slurry tank connected with the vibrating screen, wherein a heat exchange interlayer is sleeved on the outer wall of the wellhead overflow pipe and/or the diversion box, the vibrating screen is matched with a fan, and the slurry tank is connected with a cooling device; the heat exchange interlayer is used for cooling the drilling fluid in the wellhead overflow pipe and/or the diversion box, the fan is used for cooling the drilling fluid in the vibrating screen, the cooling device is used for cooling the drilling fluid in the slurry tank and is used for circularly injecting the cooling fluid into the heat exchange interlayer. The invention cools the drilling fluid to a safe temperature before entering the purification treatment equipment, and uniformly cools the high-temperature fluid by using the same cooling device, thereby being beneficial to uniformly controlling the flow of each pipeline, avoiding waste and misoperation and reducing the production cost.
Description
Technical Field
The invention relates to the technical field of oil and gas drilling, in particular to a drilling fluid cooling system.
Background
With the increase of energy demand and the development of petroleum drilling technology, deep wells, ultra-deep wells and high-temperature high-pressure wells have become important directions for the development of the drilling industry; in deep and ultra-deep well drilling, the temperature gradient is about 3 ℃ every 100m, and the bottom hole temperature can reach 180-210 ℃ or higher for 6000-7000m well depth, and when the well depth exceeds 10000m, the bottom hole temperature is above 300 ℃. The formation temperature rise can cause the phenomena of high-temperature degradation, high-temperature crosslinking, high-temperature desorption and the like of the drilling fluid, if the drilling fluid is not cooled in time, the performance of the drilling fluid and the service life of downhole tools are seriously influenced, even accidents in the well are caused, and the safety of drilling operation and personnel are threatened.
At present, the drilling fluid cooling equipment is generally arranged after the drilling fluid purifying treatment (sieving, degassing, sand removal and mud removal), namely the drilling fluid purifying equipment needs to treat the high-temperature drilling fluid just returned from a wellhead, and the high-temperature drilling fluid can have adverse effects on the service life of the drilling fluid purifying equipment and also can cause safety threat to operators; therefore, there is a need for a cooling system that is provided before the drilling fluid purification apparatus so that the drilling fluid is cooled to a safe temperature before entering the purification apparatus to ensure the service life of the purification apparatus and the safety of the operation of the operator.
Disclosure of Invention
The invention provides a drilling fluid cooling system, which aims at solving the technical defect that the prior drilling fluid cooling equipment is arranged behind the drilling fluid purifying treatment equipment and cannot cause adverse effects on the service life of the purifying equipment and the operation safety of operators. The four-stage cooling device is arranged at the front end of the drilling fluid purifying treatment equipment, achieves the effect of quickly cooling the drilling fluid through four-stage cooling, and enables the drilling fluid to be cooled to a safe temperature before entering the purifying treatment equipment; the invention can prolong the service life of the purifying equipment and improve the operation safety of operators.
In order to achieve the above object, the present invention provides the following technical solutions:
the drilling fluid cooling system comprises a wellhead overflow pipe connected with a bell mouth, a diversion box connected with the wellhead overflow pipe, a vibrating screen connected with the diversion box and a slurry tank connected with the vibrating screen, wherein a heat exchange interlayer is sleeved on the outer wall of the wellhead overflow pipe and/or the outer wall of the diversion box, the vibrating screen is matched with a fan, and the slurry tank is connected with a cooling device; the heat exchange interlayer is used for cooling drilling fluid in the wellhead overflow pipe and/or the diversion box, the fan is used for cooling the drilling fluid in the vibrating screen, and the cooling device is used for cooling the drilling fluid in the mud tank and for circularly injecting cooling fluid into the heat exchange interlayer.
The conventional wellhead generally adopts a wellhead overflow pipe, a shunt box, a vibrating screen and a mud tank for the drilling fluid returning from the bottom of the well, and the conventional wellhead is wide in application range aiming at the common wellhead connection mode, namely, the conventional wellhead enters a three-level or four-level cooling flow from the moment that the drilling fluid overflows from the wellhead, and is subjected to three-level cooling when heat exchange interlayers are sleeved on the outer walls of the wellhead overflow pipe or the shunt box, and is subjected to four-level cooling when heat exchange interlayers are sleeved on the outer walls of the wellhead overflow pipe and the shunt box.
Taking four-stage cooling as an example, one-stage cooling: the heat exchange interlayer sleeved on the outer wall of the wellhead overflow pipe takes away the heat of the high-temperature drilling fluid in the wellhead overflow pipe through a heat exchange principle, so that primary cooling is realized; and (3) secondary cooling: the heat exchange interlayer sleeved on the outer wall of the diversion box takes away the heat of the high-temperature drilling fluid in the diversion box through a heat exchange principle, so that the secondary cooling is realized; and (3) three-stage cooling: blowing air to the screen surface of the vibrating screen by using a fan, taking away the heat of the high-temperature drilling fluid on the screen surface, and realizing three-stage cooling; four-stage cooling: the cooling device takes away the heat of the drilling fluid in the mud tank, and realizes four-stage cooling.
The primary cooling and the secondary cooling are arranged at the front end of the drilling fluid purifying treatment equipment (the vibrating screen), so that the drilling fluid is cooled to a safe temperature before entering the purifying treatment equipment, and the service life of the vibrating screen, the mud tank and other drilling fluid treatment equipment and the operation safety of operators are facilitated; meanwhile, the drilling fluid is further cooled through three-stage cooling and four-stage cooling, so that the subsequent treatment efficiency and the recycling effect of the drilling fluid are facilitated.
Preferably, the cooling device comprises a cooling unit and a heat exchanger, wherein the cooling unit is used for reducing the temperature of the cooling liquid and circularly conveying the cooled cooling liquid to the heat exchange interlayer and the heat exchanger.
The cooling unit and the heat exchanger are integrated into a whole by the cooling device, so that the transportation, the loading, the unloading and the maintenance are convenient, and the production efficiency is improved; the cooling unit is used for cooling the reflowed cooling liquid and outputting the cooled cooling liquid so as to achieve the effect of circularly cooling the heat exchange interlayer and the heat exchanger; the heat exchanger is connected with the mud tank, and the circulating cooling liquid in the cooling unit is used for cooling the high-temperature drilling fluid in the mud tank, so that the cooling effect is further improved.
Preferably, the inlet end and the outlet end of the cooling unit are respectively provided with a valve I and a valve II, and the valve I and the valve II are both used for communicating or cutting off a pipeline of the cooling device connected with the heat exchange interlayer.
The temperature of the drilling fluid is different according to the difference of the well depth and the bottom hole pressure, if the temperature of the drilling fluid is high, the heat exchange interlayer is needed to cool the drilling fluid, the valve I and the valve II are opened, and a pipeline for communicating the cooling unit to flow to the heat exchange interlayer is communicated; if the temperature of the drilling fluid is low, the heat exchange interlayer is not needed to cool the drilling fluid, the valve I and the valve II are closed, and a pipeline of the cooling unit flowing to the heat exchange interlayer is cut off; avoiding waste and reducing cost.
Preferably, the mud tank is provided with a valve three for regulating the flow of drilling fluid from the cooling device to the mud tank.
If the temperature of the drilling fluid in the mud tank is higher and cooling is needed, opening a valve III, and communicating the pipeline of the mud tank flowing to the cooling device; if the temperature of the drilling fluid in the mud tank is low and cooling is not needed, closing a valve III, and cutting off a pipeline of the mud tank flowing to the cooling device; avoiding waste and reducing cost.
Preferably, an auxiliary cooling pipe is connected to the bottom of the diversion box, and the other end of the auxiliary cooling pipe is connected to the cooling device, and the auxiliary cooling pipe is used for injecting the cooled drilling fluid into the diversion box so as to reduce the temperature of the drilling fluid in the diversion box.
When the cooling speed needs to be increased, the auxiliary cooling pipe can play a certain auxiliary cooling role; one end of the auxiliary cooling pipe is connected with the diversion box, the other end of the auxiliary cooling pipe is connected with the cooling device, the drilling fluid cooled in the cooling device is injected into the diversion box and is mixed with the high-temperature drilling fluid in the diversion box, so that the effect of reducing the temperature of the drilling fluid is achieved
Preferably, the auxiliary cooling pipe is provided with a valve IV for adjusting the flow rate of drilling fluid flowing from the cooling device to the diversion box.
The low-temperature drilling fluid cooled by the cooling device flows to the mud tank and the diversion box through a valve III and a valve IV respectively, if the low-temperature drilling fluid flow required by the diversion box is increased, the valve III is regulated to reduce the low-temperature drilling fluid injected into the mud tank, and the valve IV is matched with the regulation valve IV to increase the low-temperature drilling fluid flow flowing to the diversion box; if the flow rate of the low-temperature drilling fluid needed by the diversion box is reduced, the valve III is enlarged, the flow rate of the low-temperature drilling fluid injected into the mud tank is increased, and the valve IV is matched with the adjustment valve III, so that the flow rate of the low-temperature drilling fluid flowing to the diversion box is reduced, waste is avoided, and cost is reduced.
Preferably, the cooling liquid is injected from the bottom of the heat exchange interlayer, and returns from the top of the heat exchange interlayer to the cooling device.
The cooling liquid is injected from the bottom of the heat exchange interlayer, flows upwards to the top of the heat exchange interlayer and returns to the cooling device; due to the action of gravity, the upward flowing speed of the cooling liquid is low and stable, the flowing form is stable, the cooling liquid is in full contact with the outer wall of corresponding equipment, and the cooling effect is good; if the cooling liquid is injected from the top of the heat exchange interlayer, the cooling liquid can flow downwards rapidly due to the action of gravity, the contact area with the outer wall of the corresponding equipment is small, the heat exchange time is insufficient, and the cooling effect is poor.
Preferably, the cooling liquid is water or a condensing agent.
The use cost of water is low, and when the temperature of the drilling fluid is low or the requirement on the cooling rate is low, the water can be used as cooling fluid; when the temperature of the drilling fluid is high or the requirement on the cooling rate is high, the condensing agent can be used as the cooling fluid, so that the cooling efficiency is improved, and the service life of the drilling fluid purifying equipment and the safety of operators are ensured.
The beneficial effects of the invention are as follows:
the primary cooling and the secondary cooling are arranged at the front end of the drilling fluid purifying treatment equipment (the vibrating screen), so that the drilling fluid is cooled to a safe temperature before entering the purifying treatment equipment, and the service life of the vibrating screen and the slurry tank and the operation safety of operators are facilitated; meanwhile, the drilling fluid is further cooled through three-stage cooling and four-stage cooling, so that the subsequent treatment efficiency and the recycling effect of the drilling fluid are facilitated; the high-temperature liquid is uniformly cooled by using the same cooling device, and meanwhile, the flow of the cooling liquid and the low-temperature drilling liquid is controlled by the valve, so that the treatment efficiency is improved, the uniform control of the flow of each pipeline is facilitated, the waste and misoperation are avoided, and the production cost is reduced.
Drawings
Fig. 1 is a schematic diagram of a drilling fluid cooling system in embodiment 1.
Fig. 2 is a schematic diagram of the cooling device in embodiment 1.
Fig. 3 is a schematic structural diagram of a drilling fluid cooling system in embodiment 2.
Fig. 4 is a schematic structural diagram of a drilling fluid cooling system in embodiment 3.
Wherein the reference numerals are as follows:
the device comprises a 1-wellhead overflow pipe, an 11-heat exchange interlayer, a 2-shunt box, a 21-auxiliary cooling pipe, a 22-valve IV, a 3-vibrating screen, a 31-fan, a 4-slurry tank, a 41-valve III, a 5-cooling device, 51-cooling liquid, a 52-cooling unit, 521-valve I, 522-valve II, a 53-radiator, 54-valve V, 55-pump II, 56-heat exchanger, 6-pump I and 7-horn mouth.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1, a drilling fluid cooling system comprises a wellhead overflow pipe 1 connected with a bell mouth 7, a diversion box 2 connected with the wellhead overflow pipe 1, a vibrating screen 3 connected with the diversion box 2 and a mud tank 4 connected with the vibrating screen 3, wherein heat exchange interlayer 11 is sleeved on the outer walls of the wellhead overflow pipe 1 and the diversion box 2, a fan 31 is matched with the vibrating screen, and the mud tank 4 is connected with a cooling device 5; the heat exchange interlayer 11 is used for cooling the drilling fluid in the wellhead overflow pipe 1 and the shunt box 2, the fan 31 is used for cooling the drilling fluid in the vibrating screen 3, the cooling device 5 is used for cooling the drilling fluid in the mud tank 4 and the cooling fluid 51 is used for circularly injecting into the heat exchange interlayer 11.
The mud tank 4 is provided with a valve III 41, and the valve III 41 is used for adjusting the flow of drilling fluid flowing from the cooling device 5 to the mud tank 4.
The bottom of the diversion box 2 is connected with an auxiliary cooling pipe 21, and the other end of the auxiliary cooling pipe 21 is connected with a cooling device 5 which is used for injecting the cooled drilling fluid into the diversion box 2 so as to reduce the temperature of the drilling fluid in the diversion box 2; the auxiliary cooling pipe 21 is provided with a valve four 22, and the valve four 22 is used for adjusting the flow of the drilling fluid flowing from the cooling device 5 to the diversion box 2.
As shown in fig. 2, the cooling device 5 includes a cooling unit 52 and a heat exchanger 56, where the cooling unit 52 is used to reduce the temperature of the cooling liquid 51, and circulate and convey the cooled cooling liquid 51 to the heat exchange interlayer 11 and the heat exchanger 56; the inlet end and the outlet end of the cooling unit 52 are respectively provided with a valve I521 and a valve II 522, and the valve I521 and the valve II 522 are used for communicating or cutting off a pipeline of the cooling device 5 connected with the heat exchange interlayer 11.
The cooling liquid 51 is injected from the bottom of the heat exchange interlayer 11, returns from the top of the heat exchange interlayer 11 and flows back to the cooling device 5; the cooling liquid 51 is water or a condensing agent.
The embodiment realizes four-stage cooling and one-stage cooling: the heat exchange interlayer 11 sleeved on the outer wall of the wellhead overflow pipe 1 takes away the heat of the high-temperature drilling fluid in the wellhead overflow pipe 1 through a heat exchange principle, so that primary cooling is realized; and (3) secondary cooling: the heat exchange interlayer 11 sleeved on the outer wall of the split flow box 2 takes away the heat of the high-temperature drilling fluid in the split flow box 2 through a heat exchange principle, so that secondary cooling is realized; and (3) three-stage cooling: blowing air to the screen surface of the vibrating screen 3 by using a fan 31, taking away the heat of the high-temperature drilling fluid on the screen surface, and realizing three-stage cooling; four-stage cooling: the cooling device 5 takes away the heat of the drilling fluid in the mud tank 4, and realizes four-stage cooling.
When the cooling device 5 works, the pump II 55 sucks the cooling liquid 51, the cooling liquid 51 firstly dissipates heat through the radiator 53, the cooled cooling liquid 51 flows to the heat exchange interlayer 11 and the heat exchanger 56 through the valve II 522 and the valve III 54 respectively, and the drilling fluid cooled by the heat exchanger 56 flows to the diversion box 2 and the mud tank 4 through the valve IV 22 and the valve III 41 respectively; at the same time, pump one 6 sucks drilling fluid in mud tank 4 into the pipeline and sends it to heat exchanger 56 in cooling device 5.
The primary cooling and the secondary cooling are arranged at the front end of the drilling fluid purifying treatment equipment (the vibrating screen 3), so that the drilling fluid is cooled to a safe temperature before entering the purifying treatment equipment, and the service life of the vibrating screen 3, the mud tank 4 and other drilling fluid treatment equipment and the operation safety of operators are facilitated; meanwhile, the drilling fluid is further cooled through three-stage cooling and four-stage cooling, so that the subsequent treatment efficiency and the recycling effect of the drilling fluid are facilitated.
The cooling liquid heat exchange cooling method used by the invention is a common cooling method in industry, and related equipment is mature, has strong reliability, convenient installation and low cost, and can be well adapted to the operation characteristics of a drilling site; the invention uses the same cooling device 5 to uniformly cool the high-temperature liquid in the heat exchange interlayer 11 and the heat exchanger 41, improves the treatment efficiency, is beneficial to uniformly controlling the flow of each pipeline, avoids waste and misoperation, and reduces the production cost.
Example 2
As shown in fig. 3, the difference between this embodiment and embodiment 1 is that in this embodiment, the heat exchange interlayer 11 is only sleeved on the outer wall of the wellhead overflow pipe 1, and the heat exchange interlayer 11 is not provided on the outer wall of the shunt box 2.
The temperature of the drilling fluid is different according to the well depth and the bottom hole pressure, and if the temperature of the drilling fluid is low, the outer wall of the wellhead overflow pipe 1 is sleeved with the heat exchange interlayer 11, so that the cooling purpose can be achieved, the waste is avoided, and the cost is reduced.
Example 3
As shown in fig. 4, the difference between this embodiment and embodiment 1 is that in this embodiment, the heat exchange barrier 11 is only sleeved on the outer wall of the shunt box 2, and the heat exchange barrier 11 is not provided on the outer wall of the wellhead overflow pipe 1.
The temperature of the drilling fluid is different according to the well depth and the bottom hole pressure, and if the temperature of the drilling fluid is low, the outer wall of the shunt box 2 is sleeved with the heat exchange interlayer 11, so that the cooling purpose can be achieved, the waste is avoided, and the cost is reduced.
All of the features disclosed above, or all of the steps in a method or process disclosed, may be combined in any combination, except mutually exclusive features and/or steps.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. The utility model provides a well drilling liquid cooling system, includes well head overflow pipe (1) of connection horn mouth (7), connects shunt running pipe (2) of well head overflow pipe (1), connect shale shaker (3) of shunt running pipe (2) and connect shale shaker (4) of shale shaker (3), its characterized in that, the outer wall cover of well head overflow pipe (1) and/or shunt running pipe (2) is equipped with heat transfer interlayer (11), shale shaker (3) are supporting to have fan (31), shale shaker (4) are connected with cooling device (5); the heat exchange interlayer (11) is used for cooling drilling fluid in the wellhead overflow pipe (1) and/or the diversion box (2), the fan (31) is used for cooling the drilling fluid in the vibrating screen (3), the cooling device (5) is used for cooling the drilling fluid in the mud tank (4) and for circularly injecting cooling fluid (51) into the heat exchange interlayer (11);
the cooling device (5) comprises a cooling unit (52) and a heat exchanger (53), wherein the cooling unit (52) is used for reducing the temperature of the cooling liquid (51) and circularly conveying the cooled cooling liquid (51) to the heat exchange interlayer (11) and the heat exchanger (53);
the inlet end and the outlet end of the cooling unit (52) are respectively provided with a valve I (521) and a valve II (522), and the valve I (521) and the valve II (522) are both used for communicating or cutting off a pipeline of the cooling device (5) connected with the heat exchange interlayer (11);
the mud tank (4) is matched with a valve III (41), and the valve III (41) is used for adjusting the flow rate of drilling fluid flowing from the cooling device (5) to the mud tank (4);
the bottom of the diversion box (2) is connected with an auxiliary cooling pipe (21), and the other end of the auxiliary cooling pipe (21) is connected with the cooling device (5) and is used for injecting cooled drilling fluid into the diversion box (2) so as to reduce the temperature of the drilling fluid in the diversion box (2);
the cooling liquid (51) is injected from the bottom of the heat exchange interlayer (11), and returns from the top of the heat exchange interlayer (11) to the cooling device (5).
2. A drilling fluid cooling system according to claim 1, characterized in that the auxiliary cooling pipe (21) is provided with a valve four (22), which valve four (22) is used for regulating the drilling fluid flow from the cooling device (5) to the distribution box (2).
3. A drilling fluid cooling system according to any of claims 1-2, wherein the cooling fluid (51) is water or a condensing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629091.0A CN111810067B (en) | 2020-07-03 | 2020-07-03 | Drilling fluid cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629091.0A CN111810067B (en) | 2020-07-03 | 2020-07-03 | Drilling fluid cooling system |
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| Publication Number | Publication Date |
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| CN111810067A CN111810067A (en) | 2020-10-23 |
| CN111810067B true CN111810067B (en) | 2024-04-09 |
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| CN202010629091.0A Active CN111810067B (en) | 2020-07-03 | 2020-07-03 | Drilling fluid cooling system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775307A (en) * | 2021-09-02 | 2021-12-10 | 中国煤炭地质总局水文地质局 | Drilling mud liquid cooling device and drilling system |
| CN113898305A (en) * | 2021-11-18 | 2022-01-07 | 西南石油大学 | High-temperature drilling fluid screening and cooling device and method |
| CN114776239A (en) * | 2022-05-06 | 2022-07-22 | 吉林大学 | High-temperature drilling fluid cooling system |
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| US10041314B2 (en) * | 2014-07-08 | 2018-08-07 | National Oilwell Varco, L.P. | Closed loop drilling mud cooling system for land-based drilling operations |
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