CN210888851U

CN210888851U - Slurry cooling system

Info

Publication number: CN210888851U
Application number: CN201922091756.2U
Authority: CN
Inventors: 何德麟; 陈向东
Original assignee: Chengdu West Petroleum Equipment Co ltd
Current assignee: Chengdu West Petroleum Equipment Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-06-30
Anticipated expiration: 2029-11-28

Abstract

The utility model relates to a mud cooling system, including mud filtration sled (1), mud cooling sled (2), forced air cooling sled (3), water replenishing tank (4) and circulating water pump (5), mud filters thick particulate matter of sled (1) in to mud and filters, carries out the heat exchange through filterable mud, realizes carrying out the air cooling to the cooling of mud, and forced air cooling sled (3) carries out the air cooling to mud cooling sled (2) exhaust cooling water, recycles. The mud filtering pry (1) comprises a plurality of vibrating screens (101), a control valve (102) is arranged at a mud inlet of each vibrating screen (101), and when coarse particulate matters excessively block the vibrating screens (101), the vibrating screens (101) work alternately through the control valves (102). The utility model discloses the cooling water recycles, has solved the unable water-cooled problem that uses in the water resource deficient area, and the alternative work of shale shaker (101) has ensured that entire system can continuous operation, has guaranteed the cooling efficiency to mud.

Description

Slurry cooling system

Technical Field

The utility model relates to a cooling device technical field, especially a mud cooling system.

Background

With the increasing demand of oil and gas, the continuous development of drilling resources and the national energy strategy, the number of high-temperature and high-pressure wells is increasing, which is a necessary trend for the development of oil and gas drilling technology.

High temperature and high pressure wells are generally complicated in geological environment, high in underground geological temperature and accompanied by a great deal of heat generation in the drilling process, and the heat is transferred to drilling fluid and returned to a well head to form high-heat mud. If the high-temperature mud is not cooled in time, the high-temperature deterioration phenomenon can be caused in the drilling process, and the following bad results are usually shown:

(1) leading to failure of normal transmission and reception of downhole operational data;

(2) the performance and chemical stability of the drilling fluid are reduced;

(3) leading to the reduction of the mechanical performance of the direct contact executive components of the drilling equipment, particularly the drill bit, the drilling rod and the like, and the sealing performance and the service life of the sealing element;

(4) for oil-based muds, high heat muds increase the risk of operational safety concerns.

The novel land mud cooling system is a novel cooling scheme developed by cooling high-heat mud in land high-temperature well drilling operation. The air-cooled heat exchanger has the characteristics of large heat exchange quantity, high adaptability, low operation cost and the like, and can obtain a good cooling effect under the design condition that the ambient temperature of an operation site is lower than 35 ℃.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a mud cooling device that can the used circulation cooling water.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a mud cooling system, filters sled, mud cooling sled, air-cooled sled and circulating water pump including mud, the mud export of mud filtration sled and the mud entry linkage of mud cooling sled, circulating water pump's coolant outlet and the coolant inlet linkage of mud cooling sled, the coolant outlet of mud cooling sled and the coolant inlet linkage of air-cooled sled, the coolant outlet of air-cooled sled and circulating water pump's coolant inlet linkage, mud filters the sled and includes a plurality of parallelly connected shale shakers, all be provided with manometer and control flap on the mud entry of a plurality of shale shakers. And the mud inlets of the vibrating screens are connected with a water outlet pipe of the mud pump. The slurry pump inputs the slurry into a slurry vibrating screen, the slurry vibrating screen filters coarse particulate matters in the slurry, the filtered slurry enters the plate heat exchanger to be cooled, and cooling water after heat exchange is discharged from a cooling water outlet of the plate heat exchanger and enters the air cooling pry to be naturally cooled. The temperature of the cooling water is reduced after the air cooling prying. And the slurry enters the slurry cooling pry again to exchange heat under the action of the circulating water pump. The cooled mud flows into a mud collecting device, when the coarse particle substances in the vibrating screen are too much, the mud flow is reduced, the pressure in the vibrating screen is increased, a worker opens a control valve on a mud inlet of the vibrating screen which does not work according to the flow of a mud outlet of the mud cooling pry and the reading of a pressure gauge, and closes the control valve on the mud inlet of the vibrating screen with too high pressure to finish the alternate work of the vibrating screen, and then the coarse particle substances in the blocked mud vibrating screen are poured into the coarse particle substance collecting device.

Preferably, the mud cooling skid is a plate heat exchanger.

Preferably, the air cooling pry is provided with a plurality of cooling pipes which are connected in parallel, and the cooling pipes are S-shaped parallel pipe fittings and are provided with a plurality of layers of cooling fins on the surfaces. The cooling water in the cooling pipe transmits heat to the pipe wall and the radiating fins of the cooling pipe, and the pipe wall and the radiating fins exchange heat with air to achieve the purpose of cooling the cooling water.

Preferably, the heat sink is perpendicular to the axial direction of the air-cooling duct.

Preferably, still include the moisturizing jar, the moisturizing jar sets up in the connecting pipeline of forced air cooling sled and circulating water pump. And the cooled water in the air cooling pry enters the water supplementing tank and is conveyed into the plate heat exchanger by the circulating water pump. The problem of poor heat exchange effect caused by water shortage in the plate heat exchanger due to water loss in the cooling process is avoided.

The utility model has the advantages of it is following:

1. the cooling water is recycled, so that the problem that the water resource deficient area cannot be cooled by using water is solved;

2. the water discharged by the plate heat exchanger is cooled by utilizing normal-temperature air, so that energy is not consumed, and the environment is protected;

3. the alternate work of the vibrating screen ensures that the whole system can continuously operate and ensures the cooling efficiency of mud.

Drawings

Fig. 1 is a schematic connection diagram of the present invention;

FIG. 2 is a schematic view of the connection of the mud filter skid;

FIG. 3 is a schematic view of the connection of the air cooled pry;

FIG. 4 is a front view of the cooling tube;

in the figure: the method comprises the following steps of 1-slurry filtering pry, 2-slurry cooling pry, 3-air cooling pry, 4-water supplementing tank, 5-circulating water pump, 101-vibrating screen, 102-control valve, 103-pressure gauge, 301-cooling pipe and 302-radiating fin.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1, a mud cooling system, including mud filter sled 1, mud cooling sled 2, air-cooled sled 3 and circulating water pump 5, mud filter sled 1's mud export and mud cooling sled 2's mud entry linkage, circulating water pump 5's coolant outlet and mud cooling sled 2's coolant inlet are connected, mud cooling sled 2's coolant outlet and air-cooled sled 3's coolant inlet are connected, air-cooled sled 3's coolant outlet and circulating water pump 5's coolant inlet are connected, as shown in fig. 2, mud filter sled 1 includes a plurality of parallelly connected shale shakers 101, all be provided with manometer 103 and control flap 102 on a plurality of shale shakers 101's the mud entry. The mud inlets of the plurality of shakers 101 are connected to the mud pump outlet pipe. Mud is input into a mud vibrating screen 101 by a mud pump, coarse particulate matters in the mud are filtered by the mud vibrating screen 101, the filtered mud enters the plate heat exchanger to be cooled, and cooling water after heat exchange is discharged from a cooling water outlet of the plate heat exchanger and enters the air cooling pry 3 to be naturally cooled. The temperature of the cooling water is reduced after the cooling water passes through the air cooling pry 3. And the slurry enters the slurry cooling pry 2 again to exchange heat under the action of a circulating water pump 5. The cooled mud flows into a mud collecting device, when the coarse particle substances in the vibrating screen 101 are too much, the mud flow is reduced, the pressure in the vibrating screen 101 is increased, a worker opens the control valve 102 on the mud inlet of the vibrating screen 101 which is not in work according to the flow of the mud outlet of the mud cooling pry 2 and the reading of the pressure gauge 103, and closes the control valve 102 on the mud inlet of the vibrating screen 101 with too high pressure to complete the alternate work of the vibrating screen 101, and then the coarse particle substances in the blocked mud vibrating screen 101 are poured into the coarse particle substance collecting device.

Preferably, mud cooling sled 2 is plate heat exchanger.

Preferably, the screen and the slurry inlet of the vibrating screen 101 are communicated with the outside, and the rest is a closed cylindrical structure. It is ensured that the slurry can only flow out of the screen and that a pressure gauge 103 arranged at the slurry inlet can detect a change in the pressure of the slurry after the screen has been clogged with coarse material.

As shown in fig. 3-4, the air-cooling skid 3 is provided with a plurality of cooling pipes 301, the plurality of cooling pipes 301 are connected in parallel, the cooling pipes 301 are S-shaped parallel pipes, and the surface of each cooling pipe is provided with a plurality of layers of cooling fins 302. The cooling water in the cooling pipe 301 transfers heat to the pipe wall of the cooling pipe 301 and the radiating fins 302, and the pipe wall and the radiating fins 302 exchange heat with air to achieve the purpose of cooling the cooling water.

Preferably, the heat sink 302 is perpendicular to the axial direction of the air cooling pipe 301.

Preferably, still include water replenishing tank 4, water replenishing tank 4 sets up on air-cooled sled 3 and circulating water pump 5's connecting pipeline. The water cooled in the air cooling pry 3 enters the water replenishing tank 4 and is conveyed into the plate heat exchanger by the circulating water pump 5. The problem of poor heat exchange effect caused by water shortage in the plate heat exchanger due to water loss in the cooling process is avoided.

The working process of the utility model is as follows: the mud pump conveys high-temperature mud into the vibrating screen 101, coarse particle substances in the high-temperature mud are filtered out through the vibrating screen 101, the filtered mud enters the plate heat exchanger, a mud channel and a cooling water channel are respectively arranged on the plate heat exchanger, the filtered mud completes heat exchange in the plate heat exchanger, then the filtered mud is discharged out of the plate heat exchanger and is collected through a mud collecting device, the cooling water after heat exchange is discharged out of the plate heat exchanger and enters the cooling pipe 301, the cooling pipe 301 exchanges heat with air to achieve the purpose of cooling, the cooling pipe 301 has enough length, the cooling water finishes cooling when flowing to the outlet of the cooling pipe 301 and reaches the required temperature, the cooled cooling water enters the water supplementing tank 4 and is input into the plate heat exchanger by the circulating water pump 5 to perform next heat exchange. Coarse particulate matter filtered in the vibrating screen 101 is gradually increased to cause blockage of mud, the pressure gauge 103 at the mud inlet of the vibrating screen detects that the pressure is increased, the mud flow at the mud outlet of the plate heat exchanger is reduced, and after a worker observes that the mud flow is reduced or the numerical value of the pressure gauge 103 exceeds the specified value of the internal pressure of the vibrating screen 101, the control valve 102 on the vibrating screen 101 is closed, the control valve 102 on the other vibrating screen 101 is opened, and the coarse particulate matter in the blocked vibrating screen 101 is poured into the coarse particulate matter collecting device. Thus, the vibrating screen 101 is circularly and alternately operated to achieve the aim of continuous operation.

Claims

1. A mud cooling system, its characterized in that: including mud filter sled (1), mud cooling sled (2), air-cooled sled (3) and circulating water pump (5), the mud export of mud filter sled (1) and the mud entry linkage of mud cooling sled (2), the coolant outlet of circulating water pump (5) and the coolant entry linkage of mud cooling sled (2), the coolant outlet of mud cooling sled (2) and the coolant entry linkage of air-cooled sled (3), the coolant outlet of air-cooled sled (3) and the coolant entry linkage of circulating water pump (5), mud filter sled (1) includes a plurality of parallelly connected shale shakers (101), all be provided with manometer (103) and control flap (102) on the mud entry of a plurality of shale shakers (101).

2. A mud cooling system according to claim 1, wherein: the mud cooling pry (2) is a plate heat exchanger.

3. A mud cooling system according to claim 1, wherein: air-cooled sled (3) are a plurality of cooling tubes (301), and a plurality of cooling tubes (301) are parallelly connected each other, cooling tube (301) are S type pipe fitting side by side and the surface is provided with multilayer fin (302).

4. A mud cooling system according to claim 3, wherein: the cooling fins (302) are perpendicular to the axial direction of the air cooling pipe (301).

5. A mud cooling system according to claim 1, wherein: still include water replenishing tank (4), water replenishing tank (4) set up on the connecting pipeline of forced air cooling sled (3) and circulating water pump (5).