CN216767321U - Novel drilling fluid cooling system - Google Patents
Novel drilling fluid cooling system Download PDFInfo
- Publication number
- CN216767321U CN216767321U CN202220513010.5U CN202220513010U CN216767321U CN 216767321 U CN216767321 U CN 216767321U CN 202220513010 U CN202220513010 U CN 202220513010U CN 216767321 U CN216767321 U CN 216767321U
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- CN
- China
- Prior art keywords
- heat exchanger
- drilling fluid
- refrigerant
- temperature
- cooling
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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.)
- Expired - Fee Related
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- 238000005553 drilling Methods 0.000 title claims abstract description 65
- 239000012530 fluid Substances 0.000 title claims abstract description 51
- 238000001816 cooling Methods 0.000 title claims abstract description 37
- 238000001179 sorption measurement Methods 0.000 claims abstract description 47
- 239000003507 refrigerant Substances 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000005057 refrigeration Methods 0.000 claims abstract description 16
- 239000003546 flue gas Substances 0.000 claims description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 239000003463 adsorbent Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 239000000779 smoke Substances 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Abstract
The utility model provides a novel drilling fluid cooling system, which relates to the field of drilling fluid cooling in drilling engineering and comprises a first heat exchanger, a cooling tower, a second heat exchanger, a cold-carrying liquid circulating pipeline and an adsorption type refrigerating system; the first heat exchanger is provided with a drilling fluid inlet and a drilling fluid outlet which flows into the second heat exchanger, and the first heat exchanger is also connected with the cooling tower in series; the second heat exchanger is provided with a drilling fluid inlet and a drilling fluid outlet which flow out of the first heat exchanger, and is also provided with a secondary refrigerant inlet and outlet, and the secondary refrigerant circulating pipeline connects the second heat exchanger and the adsorption refrigeration system in series.
Description
Technical Field
The utility model relates to the technical field of drilling fluid cooling in drilling engineering, in particular to a high-temperature drilling fluid cooling system.
Background
With the development of petroleum drilling technology, deep well, ultra-deep well and high temperature and high pressure well technology have become important development trends in the petroleum drilling industry, however, due to the increase of depth, new problems are faced in the drilling process. According to the actual measurement, when the well depth exceeds 7000m, the bottom temperature can reach 200 ℃, and meanwhile, a large amount of heat can be generated due to the friction between the cutting rocks of the drilling tool, the drill rod and the well wall, and the heat can be continuously transferred to the drilling fluid, so that the temperature of the drilling fluid in the well is overhigh. The great temperature rise of the drilling fluid not only affects the performance of the drilling fluid, but also reduces the service life of an underground tool and affects the normal use of a measuring instrument, and on the other hand, the overhigh temperature of the drilling fluid returning to the ground also threatens the safety of drilling operation.
At present, most of drilling fluid cooling equipment is a traditional cooling method taking water and air as media, the temperature requirement of low-temperature drilling fluid cannot be met, and a large amount of high-temperature waste gas generated in the drilling process cannot be fully applied.
Disclosure of Invention
The technical scheme adopted by the utility model for solving the technical problems is as follows: a drilling fluid cooling system comprises a first heat exchanger, a cooling tower, a second heat exchanger, a cold-carrying liquid circulating pipeline and an adsorption type refrigerating system; the first heat exchanger is provided with a drilling fluid inlet and a drilling fluid outlet which flows into the second heat exchanger, and the first heat exchanger is also connected with the cooling tower in series; the second heat exchanger is provided with a drilling fluid inlet and a drilling fluid outlet which flow out from the first heat exchanger, the second heat exchanger is also provided with a secondary refrigerant inlet and outlet, and the secondary refrigerant circulating pipeline connects the second heat exchanger and the adsorption refrigeration system in series.
Specifically, the first heat exchanger and the second heat exchanger both adopt plate heat exchangers.
The adsorption refrigeration system comprises an evaporator, a high-temperature adsorption bed and a condenser, wherein the evaporator is provided with a refrigerant inlet and a refrigerant outlet and is connected with a serial cold-carrying liquid circulating pipeline in series, and the evaporator is also provided with a refrigerant inlet and a refrigerant steam outlet; the evaporator, the high-temperature adsorption bed, the condenser and the liquid storage tank are sequentially connected to form a loop for flowing a refrigerant.
And further: the high-temperature adsorption bed contains an adsorbent which can adsorb the refrigerant from the evaporator at normal temperature;
further: in the high-temperature adsorption bed, tail gas of a drilling engine enters the high-temperature adsorption bed through a flue gas pipeline inlet, and is discharged out of air after heat exchange with an adsorbent in the high-temperature adsorption bed is realized; and a flue gas valve and an air valve branch which are arranged on a flue gas air pipeline of the high-temperature adsorption bed can be communicated with external air.
Further: one end of the condenser is connected with the high-temperature adsorption bed through a valve, and the other end of the condenser is connected with the refrigerant liquid storage tank.
Further: the liquid storage tank is connected with the condenser through a pipeline, and the bottom of the liquid storage tank is connected with the evaporator through a valve.
As an improvement: valves are arranged on the external air inlet and the flue gas inlet of the high-temperature adsorption bed.
As an improvement: an air flue gas pipeline of the high-temperature adsorption bed is communicated with a tail gas outlet of a drilling engine, and the tail gas of the engine is used as a heat source to drive refrigeration.
As an improvement: the adsorbent of the high-temperature adsorption bed adopts zeolite for adsorption, and the refrigerant adopts water.
As an improvement: the drilling fluid exchanges heat with the adsorption refrigeration system through the exchanger and the cold-carrying liquid, the cold-carrying liquid circulating liquid is used as a refrigeration intermediate medium in the middle, and the cold-carrying liquid is glycol solution.
By adopting the technical scheme, compared with the prior art, the utility model has the following advantages:
the adsorption type drilling fluid cooling system realizes the combination of water cooling and an absorption type refrigerating system for mixed cooling through the structure, so that the cooling efficiency is greatly improved; and a cooling liquid carrying circulation pipeline indirect cooling mode is adopted, so that the temperature control of the drilling fluid is more accurate.
In the adsorption refrigeration system, zeolite adsorption is adopted as an adsorbent, water is used as a refrigerant, and the refrigeration temperature can be controlled to be above 0 ℃ to be freely adjusted, so that the well entry temperature of the drilling fluid can be controlled in a lower range, and the temperature change of the drilling fluid is stabilized. And the heat in the tail gas of the drilling engine is used for driving the desorption of the refrigerant in the high-temperature adsorption bed, and the waste heat in the tail gas of the drilling engine is recycled, so that the energy-saving device has the advantage of energy conservation.
Description of the drawings:
FIG. 1 is a schematic diagram of a drilling fluid cooling system driven by waste heat of flue gas according to the present invention
Description of the symbols: 1-drilling fluid inlet; 2-liquid pump a; 3-liquid pump b; 21-liquid pump c; 23-liquid pump d; 4-a first heat exchanger; 24-a second heat exchanger; 5-a cooling tower; 6-refrigerant valve a; 9-refrigerant valve b; 18-refrigerant valve c; 7-a liquid storage tank; 8-a condenser; 10-high temperature adsorption bed; 11-an adsorbent; 12-flue gas air duct; 13-fan a; 19-fan b; 14-an air valve; 15-flue gas valve a; 17-flue gas valve b; 16-flue gas duct inlet; 20-an evaporator; 22-cold carrier liquid circulating pipeline; 25-drilling fluid reservoir.
The specific implementation mode is as follows:
the utility model is described in further detail below with reference to the following figures and detailed description:
referring to fig. 1, a drilling fluid cooling system includes a first heat exchanger 4, a cooling tower 5, a second heat exchanger 24, a cold-carrying liquid circulation pipeline 22 and an adsorption refrigeration system;
when the temperature of the drilling fluid returned to the ground is too high, the drilling fluid is forcibly cooled by adopting the novel drilling fluid cooling system, flows into a drilling fluid pool 39 through the inflow port 1, and is kept stand and cooled in the drilling fluid pool; according to the temperature of the drilling fluid, the flow of a solution pump a2 is controlled to control the cooling of the drilling fluid, so that the drilling fluid exchanges heat with cooling water in a cooling tower 5 through a first heat exchanger 4, the circulation of the cooling water in the cooling tower is realized through a liquid pump b3, and the first cooling is carried out; the drilling fluid subjected to primary cooling exchanges heat with the cold-carrying fluid in the cold-carrying fluid circulating pipeline 22 through the second heat exchanger 24, secondary cooling is carried out, and the drilling fluid subjected to primary cooling finally flows into a drilling well; one end of the cooling liquid circulation pipeline 22 exchanges heat with an evaporator in the adsorption refrigeration system through a liquid pump c21, and the other end of the cooling liquid circulation pipeline is communicated with the second heat exchanger 24 through a liquid pump d 23.
In an adsorption refrigeration system: the system mainly comprises a liquid storage tank 7, an evaporator 20, a high-temperature adsorption bed 10 and a condenser 8, wherein when the system is in initial operation, a certain amount of refrigerant liquid is injected into the liquid storage tank 7, and the system operation is divided into two processes: a cooling adsorption process and a heating desorption process.
The evaporator 20 is maintained in a vacuum low-pressure state, and thus the boiling point of the refrigerant is low; the heat of the refrigerant-carrying liquid is taken away by the vaporization of the refrigerant at a low pressure, and the resulting refrigerant vapor flows out into the high-temperature adsorption bed 10 through the refrigerant valve c18 to be absorbed by the adsorbent 11 in the high-temperature adsorption bed 10.
The second smoke valve 17 and the refrigeration valve 18 are in a closed state, the air valve 14 and the first smoke valve 15 are opened, and at the moment, smoke directly flows out through the first smoke valve 15; the fan a13 is powered on, in the process, the outside air flows in through the fan a13, the damper valve 14 and the air flue gas pipe 12, flows out after passing through the high temperature adsorption bed 10, and in the process, the heat of the adsorbent 11 in the high temperature adsorption bed 10 is taken away, so that the adsorbent 11 adsorbs more refrigerant from the evaporator 20.
After the adsorbent 11 in the high-temperature adsorbent bed 10 is saturated by adsorption, the air valve 14 and the first flue gas valve 15 are closed, and the second flue gas valve 17 and the refrigerant valve b9 are opened. Tail gas generated in the drilling engine flows into the high-temperature adsorption bed 10 through the second flue gas valve 17 and the flue gas air pipeline 11 and then flows out, the adsorbent 11 in the high-temperature adsorption bed 10 is heated, so that the refrigerant is desorbed and flows into the condenser 7;
the desorbed refrigerant gas is condensed into liquid in the condenser 8 through the refrigerant valve b9, and at the moment, the condenser fan b19 is electrified, so that the external air takes away corresponding condensation heat, and the cooling is facilitated; the condensed refrigerant liquid flows back to the liquid storage tank 7, thereby realizing a loop for the refrigerant to flow.
The adsorption refrigeration method provided by the utility model is suitable for cooling high-temperature drilling fluid generated in the process of exploitation in the petroleum industry, and the heat of the tail gas of a drilling engine in the exploitation process is used for desorbing the refrigerant of a high-temperature adsorption bed, so that the refrigeration cycle consisting of an evaporator, the high-temperature adsorption bed and a condenser is normally carried out, the refrigerant in the evaporator is evaporated and absorbs heat, the heat of cold-carrying liquid in a cold-carrying liquid circulation box is absorbed, and finally the cold-carrying liquid in the cold-carrying liquid circulation box exchanges heat with the drilling fluid, so that the effect of cooling the drilling fluid is achieved; meanwhile, the utility model considers that the tail gas temperature of the engine of the drilling platform is higher, so the high-temperature adsorption bed adopts zeolite as an adsorbent, and the purpose of increasing the adsorption temperature is achieved.
Claims (1)
1. The drilling fluid cooling system is characterized by comprising a first heat exchanger (4), a cooling tower (5), a second heat exchanger (24), a cold-carrying liquid circulating pipeline (22) and an adsorption type refrigerating system; the first heat exchanger (4) is provided with a drilling fluid inlet and a drilling fluid outlet which flows into the second heat exchanger (24), and the first heat exchanger (4) is also connected with the cooling tower (5) in series; the second heat exchanger (24) is provided with a drilling fluid inlet and a drilling fluid outlet which flow out of the first heat exchanger (4), the second heat exchanger (24) is also provided with a secondary refrigerant inlet and outlet, and the secondary refrigerant circulating pipeline (22) connects the second heat exchanger (24) and the adsorption refrigeration system in series;
the adsorption refrigeration system comprises an evaporator (20), a high-temperature adsorption bed (10) and a condenser (8), wherein the evaporator (20) is provided with a refrigerant inlet and a refrigerant outlet and is connected with a cold-carrying liquid circulating pipeline (22) in series, and the evaporator (20) is also provided with a refrigerant inlet and a refrigerant steam outlet; the evaporator (20), the high-temperature adsorption bed (10), the condenser (8) and the liquid storage tank (7) are sequentially connected to form a loop for flowing a refrigerant;
the adsorbent of the high-temperature adsorption bed (10) is adsorbed by zeolite, and the refrigerant is water;
a first flue gas valve (15), a second flue gas valve (17) and an air valve (14) branch are arranged on a flue gas air pipeline of the high-temperature adsorption bed (10) and can be communicated with outside air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220513010.5U CN216767321U (en) | 2022-03-10 | 2022-03-10 | Novel drilling fluid cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220513010.5U CN216767321U (en) | 2022-03-10 | 2022-03-10 | Novel drilling fluid cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216767321U true CN216767321U (en) | 2022-06-17 |
Family
ID=81959756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220513010.5U Expired - Fee Related CN216767321U (en) | 2022-03-10 | 2022-03-10 | Novel drilling fluid cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216767321U (en) |
-
2022
- 2022-03-10 CN CN202220513010.5U patent/CN216767321U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220617 |