CN113123740A - Drilling fluid cooling system - Google Patents
Drilling fluid cooling system Download PDFInfo
- Publication number
- CN113123740A CN113123740A CN201911399889.4A CN201911399889A CN113123740A CN 113123740 A CN113123740 A CN 113123740A CN 201911399889 A CN201911399889 A CN 201911399889A CN 113123740 A CN113123740 A CN 113123740A
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- China
- Prior art keywords
- drilling fluid
- pipeline
- wellhead
- valve
- cooling system
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000005553 drilling Methods 0.000 title claims abstract description 94
- 239000012530 fluid Substances 0.000 title claims abstract description 87
- 238000001816 cooling Methods 0.000 title claims abstract description 71
- 238000003466 welding Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 238000005352 clarification Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 9
- 238000000746 purification Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Images
Classifications
-
- 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
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of oil drilling, in particular to a drilling fluid cooling system, which comprises a wellhead bell mouth, a wellhead overflow pipe, a flow distribution box connected with the wellhead bell mouth and the wellhead overflow pipe respectively, a vibrating screen, a flow distribution pipeline connected with the flow distribution box and the vibrating screen respectively, and a vibrating screen arranged on the tank surface of a drilling fluid tank, wherein the drilling fluid tank is connected with a cooling unit through a first pipeline and a second pipeline, a first valve is arranged on the first pipeline, the first valve controls the on-off of the first pipeline, a second valve is arranged on the second pipeline, and the second valve controls the on-off of the second pipeline, and the drilling fluid cooling system also comprises: cooling mixer and cooling unit, respectively with the third pipeline that cooling mixer and cooling unit are connected, install third valve on the third pipeline can make high temperature drilling fluid carry out the cooling before getting into clarification plant and handle, has improved clarification plant's life, has reduced the running cost, has improved production efficiency, has improved operating personnel's security.
Description
Technical Field
The invention relates to the technical field of oil drilling, in particular to a drilling fluid cooling system.
Background
With the increase of energy demand and the development of oil drilling technology, deep wells, ultra-deep wells and high-temperature and high-pressure wells become important directions for the development of drilling industry, in the drilling process of the deep wells and the ultra-deep wells, the formation temperature is increased along with the increase of the depth, the bottom temperature of 6000-plus-7000 m deep wells is 180-plus-210 ℃, and when the drilling depth exceeds 10000 m, the bottom temperature is above 300 ℃, the increase of the formation temperature causes the increase of the temperature of drilling fluid, which not only affects the performance of the drilling fluid, but also affects the service life of downhole tools, the safety of drilling operation and the safety of personnel.
At present, a drilling fluid cooling system generally utilizes a heat exchange principle to cool drilling fluid by using a cooling medium after the drilling fluid is subjected to purification treatment (namely screening, degassing, desanding and desilting), and purification equipment needs to work in a high-temperature environment under the condition and is very unfavorable for the service life and the personnel safety of the purification equipment.
The prior art has the following problems:
1. the purification equipment needs to work at high temperature, so that the service life of the purification equipment is reduced, and the operation cost is increased;
2. the high-temperature drilling fluid enables parts such as the screen mesh to be damaged easily, and frequent replacement reduces the working efficiency;
3. personnel face high temperature drilling fluid when operating equipment, increase personnel's danger of operating.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a drilling fluid cooling system.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a drilling fluid cooling system, includes well head horn mouth, well head overflow pipe, reposition of redundant personnel case, reposition of redundant personnel pipeline, shale shaker, drilling fluid reservoir, cooling unit, pipeline one, valve one, pump one, pipeline two, valve two, pump two, the well head horn mouth with the reposition of redundant personnel case passes through the well head overflow pipe is connected, the reposition of redundant personnel case with the shale shaker passes through reposition of redundant personnel pipe connection, the shale shaker is installed drilling fluid reservoir tank face, the drilling fluid reservoir with the cooling unit passes through pipeline one with pipeline two is connected, valve one and pump one are installed pipeline one is last, valve one with pump one control pipeline one break-make, valve two with pump two is installed on pipeline two, valve two with pump two control pipeline two break-make still includes:
the cooling mixer is connected to one end, close to a wellhead, of a wellhead bell mouth, the cooling mixer is connected with the cooling unit through the pipeline III, the valve III and the pump III are installed on the pipeline III, and the valve III controls the connection and disconnection of the pipeline III.
As a preferable aspect of the present invention, the cooling mixer includes: the low-temperature drilling fluid connector comprises an outer sleeve, a first inner sleeve, a second inner sleeve, a low-temperature drilling fluid connector, a first welding flange and a second welding flange, wherein the first inner sleeve and the second inner sleeve are respectively sleeved at two ends of the outer sleeve, one end of the inner sleeve and two ends of the inner sleeve are sleeved in a staggered mode, an annular space is formed by the first inner sleeve, the second inner sleeve and the inner wall of the outer sleeve, the low-temperature drilling fluid connector is welded on the outer wall of the outer sleeve, and the first welding flange and the second welding flange are respectively fixedly connected with.
As a preferable scheme of the invention, the outer sleeve is provided with a hole matched with the low-temperature drilling fluid interface, and the hole position is communicated with an annular space formed by the first inner sleeve, the second inner sleeve and the inner wall of the outer sleeve.
The preferable embodiment of the present invention further comprises: and the temperature sensor is arranged on the outer wall of the wellhead overflow pipe and used for monitoring the temperature of the wellhead overflow pipe.
The preferable embodiment of the present invention further comprises: the flow sensor is installed on the outer wall of the wellhead overflow pipe and used for monitoring the flow of the wellhead overflow pipe.
The preferable embodiment of the present invention further comprises: and the heat dissipation fan is arranged on the drilling fluid tank surface and close to the position of the vibrating screen.
The working process and principle of the invention are as follows:
the drilling fluid returning from a wellhead flows into a wellhead overflow pipe through a wellhead bell mouth, the temperature of the drilling fluid is detected through a temperature sensor, when the temperature of the drilling fluid exceeds the preset temperature, a cooling mixer is started, a valve III and a pump III are opened, so that the low-temperature drilling fluid of a cooling unit enters the cooling mixer through a pipeline III, the low-temperature drilling fluid enters an annular space formed by the inner sleeve I, the inner sleeve II and the inner wall of the outer sleeve from a low-temperature drilling fluid interface, the low-temperature drilling fluid is sprayed and mixed with the high-temperature drilling fluid, the temperature of the high-temperature drilling fluid is effectively reduced, the cooled and mixed drilling fluid enters the wellhead overflow pipe through the wellhead bell mouth, the flow of the drilling fluid is detected when the drilling fluid flows through a flow sensor, the total drilling fluid flow entering a shunt box is controlled by adjusting the flow of the low-, then get into clarification plant and purify, through cooling blower, blow the cooling processing to the drilling fluid of shale shaker sifter, carry out the secondary cooling, make the drilling fluid temperature further reduce, the drilling fluid after the purification gets into the drilling fluid reservoir, gets into the cooling unit from the drilling fluid reservoir, carries out the cubic cooling, and the drilling fluid that gets into the cooling unit passes through and carries out the heat exchange in order to reach the refrigerated effect of cooling with cooling medium.
The invention has the beneficial effects that:
1. the purification equipment works at normal temperature, so that the service life of the purification equipment is prolonged, and the operation cost is reduced;
2. the normal-temperature drilling fluid reduces the replacement frequency of vulnerable parts such as a screen and the like, and improves the working efficiency;
3. personnel face normal temperature drilling fluid when operating equipment, have reduced the danger of personnel's operation.
Drawings
FIG. 1 is a front view of a drilling fluid cooling system of the present invention;
FIG. 2 is a top view of the drilling fluid cooling system of the present invention;
FIG. 3 is a schematic diagram of the operation of the cooling unit of the present invention;
FIG. 4 is a schematic view of the cooling mixer of the present invention.
The labels in the figure are: 1-a wellhead bell mouth; 2-a wellhead overflow pipe; 3-a flow distribution box; 4-a shunt line; 5-vibrating the screen; 6-drilling fluid tank; 7-a cooling unit; 8-pipeline one; 9-valve one; 10, pumping one; 11-line two; 12-valve two; 13-pump two; 14-a cooling mixer; 15-line three; 16-valve three; 17-pump III; 18-a temperature sensor; 19-a flow sensor; 20-a heat dissipation fan; 71-Pump four; 72-a heat exchanger; 73-valve four; 74-valve 5; 75-a heat sink; 76-Pump five; 77-cooling medium tank; 141-outer sleeve, 142-inner sleeve I, 143-inner sleeve II, 144-low-temperature drilling fluid interface, 145-welding flange I, 146-welding flange II and 147-hole.
Detailed Description
The present invention will be described in further detail with reference to examples and specific embodiments, but it should not be construed that the scope of the subject matter of the present invention is limited to the examples described below, and that the technology realized based on the contents of the present invention falls within the scope of the present invention.
Example 1
As shown in the figures 1-2, the drilling fluid cooling system comprises a wellhead bell mouth 1, a wellhead overflow pipe 2, a diversion box 3, a diversion pipeline 4, a vibrating screen 5, a drilling fluid tank 6, a cooling unit 7, a pipeline I8, a valve I9, a pump I10, a pipeline II 11, a valve II 12, a pump II 13, a cooling mixer 14, a pipeline III 15, a valve III 16 and a pump III 17, wherein the wellhead bell mouth 1 and the diversion box 3 are connected through the wellhead overflow pipe 2, the diversion box 3 and the vibrating screen 5 are connected through the diversion pipeline 4, the vibrating screen 5 is arranged on the tank surface of the drilling fluid tank 6, the drilling fluid tank 6 and the cooling unit 7 are connected through the pipeline I8 and the pipeline II 11, the valve I9 and the pump I10 are arranged on the pipeline I8, the valve I9 and the pump I10 control the pipeline I8, the valve II 12 and the pump II 13 are arranged on the pipeline II 11, and the valve II 12 and the pump II 13 control the pipeline II, the cooling mixer 14 is connected to one end, close to the wellhead, of the wellhead bell mouth 1, the cooling mixer 14 is connected with the cooling unit 7 through a third pipeline 15, a third valve 16 and a third pump 17 are installed on the third pipeline 15, the third valve 16 and the third pump 17 control the on-off of the third pipeline 15, and when the temperature of returned drilling fluid is larger than or equal to 125 ℃, the third valve 16 and the third pump 17 are opened, and the third pipeline 15 is started.
As shown in fig. 3, the cooling unit 7 includes a pump four 71, a heat exchanger 72, a valve four 73, a valve 74, a radiator 75, a pump five 76, and a cooling medium tank 77, and the operation process of the cooling unit 7 is as follows: the fourth pump 71 sends the high-temperature drilling fluid in the drilling fluid tank 6 into the heat exchanger 72 to exchange heat with the cooling medium sent into the heat exchanger 72 from the cooling medium tank 77 through the fifth pump 76, the drilling fluid with the reduced temperature returns to the drilling fluid tank 6 or enters the cooling mixer 14, the cooling medium from the heat exchanger 72 returns to the cooling medium tank 77, and the drilling fluid is sent into the radiator 75 through the fifth pump 76 to be subjected to heat dissipation and temperature reduction treatment and then returns to the cooling medium tank 77.
As shown in fig. 4, the cooling mixer 14 includes an outer sleeve 141, a first inner sleeve 142, a second inner sleeve 143, and a low-temperature drilling fluid port 144, where the first inner sleeve 142 and the second inner sleeve 143 are respectively sleeved at two ends of the outer sleeve 141, an end of the first inner sleeve 142 is sleeved at an end of the second inner sleeve 143 in a staggered manner, the first inner sleeve 142, the second inner sleeve 143 and an inner wall of the outer sleeve 141 form an annular space, the low-temperature drilling fluid port 144 is welded at an outer wall of the outer sleeve 141, the first welding flange 145 and the second welding flange 146 are respectively welded to two ends of the outer sleeve 141, the outer sleeve 141 has a hole 147 matched with the low-temperature drilling fluid port 144, and the hole 147 is.
Example 2
The difference between the embodiment and the embodiment 1 is that the temperature sensor 18 is further included, the temperature sensor 18 is installed on the outer wall of the wellhead overflow pipe 2, the probe of the temperature sensor 18 is installed on the inner wall of the wellhead overflow pipe 2, and the temperature sensor 18 is used for monitoring the temperature of the wellhead overflow pipe 2.
Example 3
The difference between the embodiment and the embodiment 1 is that the flow sensor 19 is further included, the flow sensor 19 is installed on the outer wall of the wellhead overflow pipe 2, the probe of the flow sensor 19 is installed on the inner wall of the wellhead overflow pipe 2, and the flow sensor 19 is used for monitoring the flow of the wellhead overflow pipe 2.
Example 4
The difference between the embodiment and the embodiment 1 is that the cooling fan 20 is further included, and the cooling fan 20 is installed on the tank surface of the drilling fluid tank 6 and is close to the vibrating screen 5.
Example 5
The difference between the embodiment and the embodiment 2 is that the device further comprises a flow sensor 19, the flow sensor 19 is installed on the outer wall of the wellhead overflow pipe 2, a probe of the temperature sensor 18 is installed on the inner wall of the wellhead overflow pipe 2, and the flow sensor 19 is used for monitoring the flow of the wellhead overflow pipe 2.
Example 6
The difference between the embodiment and the embodiment 2 is that the cooling fan 20 is further included, and the cooling fan 20 is installed on the tank surface of the drilling fluid tank 6 and is close to the vibrating screen 5.
Example 7
The difference between the embodiment and the embodiment 3 is that the cooling fan 20 is further included, and the cooling fan 20 is installed on the tank surface of the drilling fluid tank 6 and is close to the vibrating screen 5.
Example 8
The difference between the embodiment and the embodiment 5 is that the cooling fan 20 is further included, and the cooling fan 20 is installed on the tank surface of the drilling fluid tank 6 and is close to the vibrating screen 5.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A drilling fluid cooling system comprises a wellhead bell mouth, a wellhead overflow pipe, a flow distribution box, a flow distribution pipeline, a vibrating screen, a drilling fluid tank, a cooling unit, a pipeline I, a valve I, a pump I, a pipeline II, a valve II and a pump II, the well mouth bell mouth is connected with the flow distribution box through the well mouth overflow pipe, the flow distribution box is connected with the vibrating screen through the flow distribution pipeline, the vibrating screen is arranged on the surface of the drilling fluid tank, the drilling fluid tank and the cooling unit are connected through the first pipeline and the second pipeline, the first valve and the first pump are arranged on the first pipeline and control the on-off of the first pipeline, the second valve and the second pump are installed on the second pipeline, and the second valve and the second pump control the on-off of the second pipeline, and the device is characterized by further comprising:
the cooling mixer is connected to one end, close to a wellhead, of a wellhead bell mouth, the cooling mixer is connected with the cooling unit through the pipeline III, the valve III and the pump III are installed on the pipeline III, and the valve III controls the connection and disconnection of the pipeline III.
2. The drilling fluid cooling system of claim 1, wherein the cooling mixer comprises: the low-temperature drilling fluid connector is fixed on the outer wall of the outer sleeve, and the first welding flange and the second welding flange are fixedly connected with the two ends of the outer sleeve respectively.
3. The drilling fluid cooling system of claim 2, wherein said outer sleeve has a bore associated with said cryogenic drilling fluid port, said bore forming a passage for cryogenic drilling fluid into said annular space.
4. A drilling fluid cooling system according to any of claims 1-3, further comprising: and the temperature sensor is arranged on the outer wall of the wellhead overflow pipe and used for monitoring the temperature of the wellhead overflow pipe.
5. A drilling fluid cooling system according to any of claims 1-3, further comprising: the flow sensor is installed on the outer wall of the wellhead overflow pipe and used for monitoring the flow of the wellhead overflow pipe.
6. The drilling fluid cooling system of claim 4, further comprising: the flow sensor is installed on the outer wall of the wellhead overflow pipe and used for monitoring the flow of the wellhead overflow pipe.
7. A drilling fluid cooling system according to any of claims 1-3, further comprising: and the heat dissipation fan is arranged on the drilling fluid tank surface and close to the position of the vibrating screen.
8. The drilling fluid cooling system of claim 4, further comprising: and the heat dissipation fan is arranged on the drilling fluid tank surface and close to the position of the vibrating screen.
9. The drilling fluid cooling system of claim 5, further comprising: and the heat dissipation fan is arranged on the drilling fluid tank surface and close to the position of the vibrating screen.
10. The drilling fluid cooling system of claim 6, further comprising: and the heat dissipation fan is arranged on the drilling fluid tank surface and close to the position of the vibrating screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911399889.4A CN113123740A (en) | 2019-12-30 | 2019-12-30 | Drilling fluid cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911399889.4A CN113123740A (en) | 2019-12-30 | 2019-12-30 | Drilling fluid cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN113123740A true CN113123740A (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911399889.4A Pending CN113123740A (en) | 2019-12-30 | 2019-12-30 | Drilling fluid cooling system |
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| Country | Link |
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| CN (1) | CN113123740A (en) |
Cited By (2)
| 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 |
| CN117145410A (en) * | 2023-11-01 | 2023-12-01 | 湖南路桥建设集团有限责任公司 | Reverse circulation bored pile construction device and construction method |
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2019
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Cited By (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 |
| CN117145410A (en) * | 2023-11-01 | 2023-12-01 | 湖南路桥建设集团有限责任公司 | Reverse circulation bored pile construction device and construction method |
| CN117145410B (en) * | 2023-11-01 | 2024-02-09 | 湖南路桥建设集团有限责任公司 | Reverse circulation bored pile construction device |
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