CN217177865U - Explosion-proof pipe heater of three-dimensional ribbed pipe in oil field ground - Google Patents

Abstract

The utility model discloses an explosion-proof pipe heater of three-dimensional ribbed pipe in oil field ground can heat pipeline crude oil effectively, and the sediment removal is prevented stifled. The device comprises a temperature control cabinet and a heater body, wherein the heater body is tubular, one side shaft end of the heater body is provided with a crude oil inlet, wherein an inlet temperature transmitter is arranged, a sand detecting hole is formed in the top surface of the heater body, an exhaust valve is arranged on the bottom surface of the heater body, the other end of the heater body is connected with a three-dimensional ribbed pipe through a flange, heat-conducting explosion-proof sand and a heating resistance wire are filled in the three-dimensional ribbed pipe, the heating resistance wire and the three-dimensional ribbed pipe extend towards the crude oil inlet along the central line of the heater body, a crude oil outlet is arranged on the top surface of the heater body, wherein an outlet temperature transmitter is arranged, the middle part of the bottom surface of the heater body extends downwards to form a conical settling bin, a sand discharging valve is arranged at the bottom of the settling bin, and the heating resistance wire and the temperature transmitter are both electrically connected with the temperature control cabinet.

Description

Three-dimensional ribbed pipe explosion-proof pipeline heater on oil field ground

Technical Field

The utility model relates to an explosion-proof pipe heater of three-dimensional ribbed pipe in oil field ground.

Background

Purpose of the pipe heater: the flowing temperature of crude oil in the pipeline is gradually reduced, so that the viscosity of the crude oil is increased, the flow speed is reduced, the back pressure of a pipeline is increased, and the yield of the crude oil is influenced. Therefore, a heater is required to be additionally arranged in the ground pipeline to increase the flowing temperature of the crude oil, so that the viscosity of the crude oil and the back pressure of the pipeline can be reduced, the flow velocity of the crude oil is increased, the resistance of the ground pipeline of the flowing well is reduced, and the yield of the crude oil is increased.

At present, an electric heating rod adopted by a ground pipeline heater used for developing a Ma lake oil field directly heats crude oil. The problems that exist are that: 1. the power consumption is high, the power consumption is 20KW/h (taking the crude oil yield of 30-40 t/d as an example) when the crude oil is heated to the required temperature; the power consumption of one day is 480 degrees, the electric charge is 480 multiplied by 0.75=360 yuan, and the electric charge is 360 multiplied by 150=54000 yuan calculated according to 150 days in winter. 2. The pipeline heater is easy to block, and because crude oil contains a large amount of fracturing sand and silt, the crude oil is easy to adhere to the heating rod in the flowing process and is easy to block for a long time, the heating rod is poor in heating effect, the crude oil is high in viscosity, poor in flowability, and high in pipeline back pressure resistance, single-well exploitation yield is finally affected, and a cementing phenomenon can be caused in serious cases, so that the heater is scrapped. 3. The sand removal and maintenance cost is high. The blockage of the pipeline heater causes the production stop of a single well, and maintenance personnel are required to clean the heater, so that the maintenance cost is increased.

Disclosure of Invention

An object of the utility model is to provide an explosion-proof pipe heater of three-dimensional ribbed pipe in oil field ground can heat the crude oil in the crude oil pipeline in oil field ground effectively, improves its mobility, promotes oil field production, reduces oil field manufacturing cost.

The utility model aims at realizing the above, the anti-explosion pipeline heater with the three-dimensional ribbed pipe on the ground of the oil field comprises a temperature control cabinet and a heater body, wherein the heater body is tubular, one side shaft end of the heater body is provided with a crude oil inlet, an inlet temperature transmitter is arranged at the crude oil inlet, a sand detecting hole is arranged on the top surface of the heater body at the rear part of the inlet temperature transmitter, an emptying valve is arranged on the bottom surface of the heater body, the other end of the heater body is connected with the three-dimensional ribbed pipe through a flange, the three-dimensional ribbed pipe is internally filled with heat-conducting anti-explosion sand and a heating resistance wire, the heating resistance wire and the three-dimensional ribbed pipe both extend towards the crude oil inlet along the central line of the heater body, a crude oil outlet is arranged on the top surface of the heater body close to the flange, an outlet temperature transmitter is arranged at the crude oil outlet, the middle part of the bottom surface of the heater body extends downwards to form a conical sand settling bin, the bottom of the sand settling bin is provided with a sand discharging valve, and the heating resistance wire and the temperature transmitter are electrically connected with the temperature control cabinet.

The utility model discloses explosion-proof pipe heater in ground adopts three-dimensional ribbed pipe heating rod to heat crude oil, compares that explosion-proof pipe heater in conventional ground has following advantage:

1) adopt fluorescent tube heating rod heating crude oil among the prior art, heating area is low, and the utility model discloses a three-dimensional ribbed tube heating rod, heating area are 2~6 times of fluorescent tube heating rod, and heating efficiency is high, and it is littleer to the required power consumption of regulation temperature crude oil heating, and through on-the-spot actual measurement power consumption be 10~13KW/h per well. The existing electric charge of the oil field is 0.75 yuan/degree, the electricity consumption of one day is 300 degrees, the electric charge is 300 multiplied by 0.75=225 yuan, the electric charge is calculated according to 150 days in winter, the electric charge is 225 multiplied by 150=33750 yuan, 20250 yuan is saved compared with the original heater, and the annual electric charge cost is saved by 37.5%.

2) When crude oil passes through the fins of the three-dimensional ribbed pipe, the fins can swing to generate vortexes, the flow velocity of the crude oil is increased, and silt in the crude oil is prevented from being accumulated on the three-dimensional ribbed pipe, so that the phenomenon of glue formation is avoided.

3) The design of shell bottom surface has the sediment storehouse, produces the swirl through the oil flow velocity, makes silt can be quick deposit in the sediment storehouse.

4) The shell design has the spy sand hole, can open it under the condition that does not influence crude oil production and visit sand, if surpass and visit sand position, carry out the sand removal can, guarantee production facility normal operating.

5) Crude oil is sleeved to the ground pipeline heater through the nozzle and enters the pipe network from the lower part to the higher part, the ground temperature control cabinet automatically adjusts the temperature of the ground three-dimensional ribbed pipe explosion-proof pipeline heater, the back pressure resistance of a pipeline is reduced, the flowability of the crude oil is increased, and the safety performance is high.

6) The ground three-dimensional ribbed pipe explosion-proof pipeline heater has obvious effect through field test in the use process of an oil field, realizes the purposes of improving the temperature of crude oil, reducing the viscosity of the crude oil, increasing the yield of a single well, saving the electricity charge and lightening the load of an oil field power grid. The device is highly approved by field technicians, achieves the effect of energy conservation, and greatly reduces the production cost of the oil field.

The utility model discloses a three-dimensional rib structure both can guarantee the disturbance effect of the three-dimensional rib of vortex full play, can make the fluid obtain subsequent disturbance in time again, avoids the bodiness of the laminar flow bottom that begins from the re-contact point, consequently can obtain the biggest reinforcing heat transfer effect.

The three-dimensional ribbed tube is a product in the prior art, and the three-dimensional rib reinforced heat exchange function is embodied as follows: 1. expanding a heat exchange surface: ribs are processed on the inner side and the outer side of the heat exchange tube, so that the effective heat exchange area in unit volume is increased, and the heat exchange efficiency of heat exchange equipment is improved; 2. and (3) reinforcing disturbance: each rib is an independent disturbance element and can generate strong disturbance, so that the flow state of fluid near the wall surface can reach full turbulence, the boundary layer is greatly damaged, and the heat exchange strength is improved; 3. intercostal acceleration: the circumferentially arranged discontinuous ribs reduce the effective flow area of the fluid. The flow velocity is increased, the thickness of the boundary layer can be reduced, and the thermal resistance is reduced; 4. the vibration principle of the expansion and contraction pipe is as follows: the alternate expansion and contraction causes the fluid to generate pulsation and vibration, thereby increasing the turbulence of the fluid and strengthening the convection heat transfer; 5. repeated scouring: the discontinuous ribs form the pulsating flow of fluid to cause repeated scouring, damage a laminar flow layer, reduce thermal resistance and increase the temperature gradient near the wall surface; 6. increasing the roughness of the pipe wall: the roughness difference between the processed surface and the initial surface is large; the roughness of the processed surface is larger, and the heat exchange effect is improved; 7. the equivalent diameter is reduced, the convection heat transfer coefficient is enhanced, when the fins are arranged, the working medium circulation section is reduced, the wet circumference is increased, and the equivalent diameter inside and outside the pipe is reduced. The heat convection coefficient in a turbulent flow state is inversely proportional to the equivalent diameter of the tube to the power of 0.2, and the smaller the equivalent diameter is, the larger the heat convection coefficient is.

The utility model discloses rational in infrastructure, the compactness is verified through the scene, and the effect has reached anticipated purpose, can heat the crude oil in the crude oil pipeline on oil field ground effectively, improves its mobility, promotes oil field production, reduces oil field manufacturing cost.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the present invention.

Detailed Description

The utility model provides an explosion-proof pipe heater of three-dimensional ribbed pipe in oil field ground, as shown in figure 1, including temperature control cabinet 6 and heater body 3, heater body 3 is the tubulose, one side axle head of heater body 3 has the crude oil import, crude oil import department is setting up import temperature transmitter 1, set up on the heater body top surface of import temperature transmitter rear and visit husky hole 2, set up blowoff valve 11 on the bottom surface of heater body, the other end of heater body is passing through flange 12 and is connecting a three-dimensional ribbed pipe 4, constitute the annular space between three-dimensional ribbed pipe 4 and the heater body 3 and supply crude oil to flow through. The three-dimensional ribbed tube 4 is filled with heat-conducting explosion-proof sand 7 and heating resistance wires 8, and the heating resistance wires 8 and the three-dimensional ribbed tube 4 extend to the crude oil inlet along the central line of the heater body 3. Being close to set up the crude oil export on the heater body top surface of flange 12, crude oil exit department is setting up export temperature transmitter 5, and the bottom surface middle part downwardly extending of heater body 3 is the toper and is constituteed heavy husky storehouse 9, and heavy husky storehouse 9 bottom is setting up row husky valve 10, and the liquid seal is setting up and is visiting husky chi in visiting husky hole 2, and every interval a period takes it out to examine the husky position in the heater body 3, in good time through arrange husky valve 10 arrange husky can. The heating resistance wire 8 and the temperature transmitters 1 and 5 are electrically connected with the temperature control cabinet 6. The PLC controller is arranged in the temperature control cabinet 6, and the heating time and the heating power of the heating resistance wire 8 can be adjusted by comparing the temperatures of the crude oil inlet and the crude oil outlet, so that the crude oil can be heated more effectively, and the electric energy can be saved.

The sand detecting hole 2 can be only provided with a liquid seal transparent cover, and the sand storage condition in the heater body 3 can be observed periodically to discharge sand.

Claims (1)

1. The utility model provides an explosion-proof pipe heater of three-dimensional ribbed pipe in oil field ground, includes temperature control cabinet and heater body, characterized by: the heater body is tubular, one side shaft end of the heater body is provided with a crude oil inlet, an inlet temperature transmitter is arranged at the crude oil inlet, the top surface of the heater body behind the inlet temperature transmitter is provided with a sand detecting hole, the bottom surface of the heater body is provided with an exhaust valve, the other end of the heater body is connected with a three-dimensional ribbed pipe through a flange, heat-conducting explosion-proof sand and a heating resistance wire are filled in the three-dimensional ribbed pipe, the heating resistance wire and the three-dimensional ribbed pipe both extend to a crude oil inlet along the central line of the heater body and are close to the top surface of the heater body of the flange, a crude oil outlet is arranged at the crude oil outlet, an outlet temperature transmitter is arranged at the crude oil outlet, the middle part of the bottom surface of the heater body extends downwards to form a conical settling bin, a sand discharging valve is arranged at the bottom of the settling bin, and the heating resistance wire and the temperature transmitter are electrically connected with the temperature control cabinet.

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