CN101055126A

CN101055126A - Water source heat pump heat-supply device for oil field well mouth

Info

Publication number: CN101055126A
Application number: CNA2007100114746A
Authority: CN
Inventors: 靖洪铭; 靖淑媛
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-29
Filing date: 2007-05-29
Publication date: 2007-10-17

Abstract

A water-source heat pump heating device used for oil field wellhead includes wellhead medium transmission tube, heat exchange medium output tube for connecting gathering station, water-source heat interchanger connected to water-source heat pump group, pumping submersible pump and recharge water tube which are assembled in well tube of heat collector well. The technical points includes that: the wellhead medium transmission tube and the heat exchange medium output tube connected to the gathering station are respectively connected to heat exchange medium inlet end and outlet end of the medium heater, and high temperature cycle pipeline of the heat pump group is connected to heating pipe in the medium heater, double-channel non-plug impeller comprised by main, vice impellers and automatic control powerful pollution discharge pump of fixed stirrer assembled at terminal end of motor shaft are arranged at bottom of the recharge water level in well tube of the heat collection well, outlet end of the pump is connected to sedimentation pond outside the well tube. The invention has reasonable design, easy operation, and can save primary energy and improve stability and safety of the oil well.

Description

Water source heat pump heat-supply device for oil field well mouth

Technical field

The present invention relates to a kind of crude oil of oil well collection, the heat temperature raising device that water and gas compound medium is used, particularly a kind of water resource heat pump heat collection technology and heat exchanger of utilizing comes the place of water blind roaster to add the water source heat pump heat-supply device for oil field well mouth of the blending agent of hot oil wells collection.Also can be used as the Cooling and Heat Source in other temperature adjustment place.

Background technology

At present, crude oil, water and gas compound medium and gathering station thereof (multi-purpose station) that the on-the-spot well mouth of oil well that recovers the oil in the oil field is gathered, the blending agent heat temperature raising in case the blending agent of flow through wellhead assembly or gathering station bonds or congeals, need be guaranteed that petroleum pipeline is unimpeded.The traditional heating device generally adopts the water jacket furnace of fire coal, fuel oil, combustion gas or the heat temperature raising that electrically heated mode realizes blending agent.This not only causes a large amount of limited resources fuel, waste of electric energy, and heater such as water jacket furnace burner also can bring the hidden danger that jeopardizes equipment and personal safety, the insufficient resource of both having wasted of fuel combustion, and serious environmental is polluted again.Therefore, the transformation to water jacket furnace has become the major subjects that scientific and technical personnel make great efforts to tackle key problems.Although the development and use of water resource heat pump heat collection technology in heating, culture, plant and industry such as grow and applied, but the restriction of the easy obstruction defective that the structure that is subjected to the heat-collection well of its water source heat pump units exists, this technology is promoted and is affected, and also fails so far to obtain using in the oil field.This heat collection technology is to be medium with water, the employing water source heat pump units realizes the extraction to geothermal energy resources, and can not consume and pollute the water resource that is extracted heat, also can not cause the change of geologic structure, be a kind of heat transfer technology that the heat pump techniques of underground heat acquisition technique and maturation is gathered together.Water source heat pump units is exactly to utilize heat-collection well underground water to be carried out the energy-collecting device of heat exchange.The heat-collection well of water source heat pump units is provided with distribution by what it recharged, can be divided into single tube well (promptly finish in a bite pipe well and draw water, recharge task) and multitube well (be a bite pipe well draws water, many mouthfuls of pipe wells recharge).The single tube well mainly is to be provided with under the restriction that is subjected to landform, geological conditions can not be established the situation of inverted well in addition, though this can save the expense of beating inverted well, but its drilling depth and recharge having relatively high expectations of condition, draw water in the well casing, need to be provided with the higher sealing device of isolation condition between the recharge water, seal bad can the influence, cause the waste of water resource heat phreatic heat extraction.In place with good conditionsi the multitube well is set, it is many that the inverted well of multitube well is provided with, backwater efficient height, and the expense of well-digging is also high.The various heat-collection wells of existing source pump recharge the obstruction of part because of the sand setting in the well casing, suspension dirt, the backwater that not only can cause carrying after the heat can not in time recharge or can't recharge at all, and influence the normal operation of heat-collection well, can cause the consequences such as waste of moving sand, surface collapse, contaminated environment, water resource heat simultaneously inevitably.The home and abroad once proposes some at the problems referred to above and solves the technical scheme of stopping up, as notification number is CN2606868Y " a kind of geothermal water exploitation and recharge system ", employing is recharged exploitation to well, the two-tube well pattern of promptly draw water pipe well, recharging pipe well, but its recharge water system is comparatively complicated, can not solve the well casing blocking problem.Notification number be 2646629Y's " autocontrol geothermal water reinjection device ", the circular hole of 3～12 built-in water outlet axostylus axostyles of radial distribution on the barrel wall of single tube well has the connecting rod with the valve interlock on these water outlet axostylus axostyles.Valve control is drawn water and is recharged, and the apopore by increasing the water outlet axis hole and the quantity of the circular hole on the barrel and the number of plies improve recharges efficient, the complex structure of its water outlet axostylus axostyle, and processing is difficulty relatively, still can't resolve the well casing blocking problem.Notification number be CN2742349Y's " using the tail water behind the energy to recharge filtration system " to well pattern exploiting groundwater, be included in the multistage filtering group be installed between recovery well and the inverted well, every grade of filtration group is made up of three～seven filters.Notification number be CN1306226C's " well head system that is used for geothermal tertiary system sandstone recharge ", mainly adopt coarse filter group and the fine filter group that two-stage constitutes with parallel way and pump is recharged in pressurization and the forced exhaust jar composes in series recharge system.Publication number be CN1844796A's " twin-well is taken out the transducing head of filling by turns ", comprise twin-well and be installed in well casing, immersible pump in the twin-well and the transducer that is communicated with immersible pump, well casing is installed in the twin-well.During work, form low-pressure chamber in the pumped well, form the hyperbaric chamber in the inverted well, underground water is made the revolution shuttling movement between twin-well and in the underground layer of sand of each layer of periphery under the effect of the high and low pressure difference of twin-well.Above-mentioned disclosed to well recharge, measure such as valve control is recharged, tail water recharges filtration system, the twin-well pressure differential is recharged, because of can't thoroughly removing to fine sand that recharges the water layer bottom deposit and the suspension that is attached on the tube wall, and structural design more complicated, so not only increased operating cost and maintenance cost, and blocking-proof result is bad, and well casing stops up also can cause scrapping of single tube well or inverted well, has limited its popularization, therefore, also influence its application at oil well.

Summary of the invention

The purpose of this invention is to provide a kind of water source heat pump heat-supply device for oil field well mouth, its overall construction design is reasonable, easy and simple to handle, can fundamentally solve energy waste that exists in the prior art and the problems such as development that limit the water resource heat pump heat collection technology, adopt regenerative resource, non-environmental-pollution is obviously saved the disposable energy, significantly reduce operating cost and maintenance cost, improve oil well operation stability and security reliability.

The object of the present invention is achieved like this: this device comprises well head medium transfer tube, the heat transferring medium efferent duct that is communicated with gathering station, connect the water source heat exchanger of source pump and be assembled in the immersible pump and recharge water pipe of drawing water in the heat-collection well well casing, its technical essential is: described well head medium transfer tube connects the heat transferring medium arrival end of dielectric heater, the heat transferring medium port of export connects the heat transferring medium efferent duct that is communicated with gathering station, the high thermal cycle pipeline of described water source heat pump units is communicated with the heating tube in the dielectric heater, the water layer bottom of recharging in the heat-collection well well casing is provided with the automatic control powerful dredge pump, integrated by the master in the pump housing of described dredge pump, the dual channel non-clogging impeller that accessory impeller constitutes, be assembled with the master, the motor the tip of the axis of accessory impeller is agitator fixedly, described agitator places in the passage of the dividing plate below in the dredge pump pedestal intake antrum, and the pump housing port of export connects the outer settling tank of well casing by the muddy water suction pipe.

Because the present invention is on the water jacket furnace architecture basics that has the blending agent that adds the hot oil wells collection now, utilize water resource heat pump heat collection technology and heat exchanger heat conduction commonly used to come the heating of place of water blind roaster, overall construction design is reasonable, so be easy to realization.During thermal-arrest, the well water temperature that the immersible pump that draws water in the well is extracted out is about about 12 ℃, after water source heat exchanger heat conduction, the well water that " jam-proof automatic filth-discharging recharging device " that adopts the applicant to design will be extracted heat recharges, after recharge water and the geothermal source heat exchange, from hot well, be evacuated to water source heat exchanger heat conduction again, constantly finish circulation heating, this has just fundamentally solved the problems such as well casing obstruction of energy waste and the security of operation hidden danger and the existence of water resource heat pump heat-collection well of the existence of traditional water blind roaster.This device is delivered to water source heat pump units with the heat that the water source heat exchanger extracts, because of the heating tube in the high thermal cycle pipeline connection dielectric heater of water source heat pump units, so can with in the dielectric heater the well head medium by heat transferring medium arrival end transmission be heated to design temperature, and then, be transferred to gathering station by the heat transferring medium efferent duct with the heat transferring medium port of export of heated well head medium from dielectric heater.This device adopts reproducible water source heat energy, and fuel such as the oil that the cancellation water jacket furnace is used, coal, gas are obviously saved the disposable energy.It adopts conventional automated control technology, make operation easier, obviously reduce operating cost and maintenance cost, eliminate the flue dust of the insufficient generation of fuel combustion and hidden danger that jeopardizes equipment and personal safety that the burner improper use brings thereof etc. fully, non-environmental-pollution significantly improves oil well operation stability and security reliability.

Description of drawings

Below in conjunction with accompanying drawing the present invention is further described.

Fig. 1 is a kind of I type structural representation of the present invention.

Fig. 2 is a kind of II type structural representation of the present invention.

Fig. 3 is a kind of structural representation of the automatic control powerful dredge pump among Fig. 1 and Fig. 2.

Sequence number explanation among the figure: 1 gathering station, 2 heat transferring medium efferent ducts, 3 well head medium transfer tubes, 4 oil pumper well heads, 5 dielectric heaters, 6 machine rooms, 7 water source heat pump units, 8 water source heat exchangers, 9 muddy water suction pipes, 10 settling tanks, 11 automatic control powerful dredge pumps, 12 pumped well well casings, 13 isolating seals, 14 immersible pumps that draw water, 15 recharge water pipe, 16 inverted well well casings, 17 dividing plates, 18 pedestals, 19 pump housings, 20 main impellers, 21 accessory impellers, 22 grease chambeies, 23 motor shafts, 24 motors, 25 leader cables, 26 control cables, 27 profits probe, 28 double mechanical seals, 29 agitators.

The specific embodiment

Describe concrete structure of the present invention in detail according to Fig. 1～3.This device adopts the ripe heat pump heat collection technology and the thermal-arrest mode of heat exchanger commonly used, substitute the existing traditional water jacket furnace heater of oil well, it can be designed to I type structure and II type structure according to the specification and the use needs of existing water source heat pump units heat-collection well.Shown in Figure 1 is I type structural representation, the automatic control powerful dredge pump is installed in recharges water layer bottom in the well casing that heat-collection well is a pumped well.Shown in Figure 2 is II type structural representation).It comprises source pump 7 and the water source heat exchanger 8 that is assembled in the machine room 6, dielectric heater 5, the well head medium transfer tube 3 that is communicated with oil pumper well head 4, the heat transferring medium efferent duct 2 that is communicated with gathering station 1, be assembled in heat-collection well draw water draw water immersible pump 14 and isolating seal 13 in the well casing 12, be assembled in the well casing 12 that draws water or the automatic control powerful dredge pump 11 of " jam-proof automatic filth-discharging recharging device " (the applying for a patent simultaneously by the applicant) in the inverted well well casing 16, recharge parts such as water pipe 15 and settling tank 10.Wherein the specification of water source heat pump units 7 and water source heat exchanger 8, dielectric heater 5, the immersible pump 14 that draws water, automatic control powerful dredge pump 11 etc., model can adopt the typing auxiliary products of commercially available prod or special manufacturer's production according to actual instructions for use, also can the customer requirements design.Well head medium transfer tube 3 connects the heat transferring medium arrival end of dielectric heater 5, and the heat transferring medium port of export connects the heat transferring medium efferent duct 2 that is communicated with gathering station 1.The high thermal cycle pipeline of the water source heat pump units of being made up of commonly used evaporimeter, compressor, condenser and circulating pump etc. 7 is communicated with the interior heating tube (not shown) import and export end of dielectric heater 5.The heat-collection well that is arranged on of " jam-proof automatic filth-discharging recharging device " draws water in the well casing 12 or the automatic control powerful dredge pump 11 that recharges the water layer bottom in the inverted well well casing 16, the integrated dual channel non-clogging impeller that is made of main impeller 20, accessory impeller 21 in the pump housing 19.Be assembled with the fixing agitator 29 of end of the motor shaft 23 of main impeller 20, accessory impeller 21.Stirring pump 29 places in the passage of dividing plate 17 belows in dredge pump pedestal 18 intake antrums.The pump housing 19 ports of export connect the outer settling tank 10 of well casing by muddy water suction pipe 9.Because of can preventing inverted well effectively, " jam-proof automatic filth-discharging recharging device " stop up, so not only can prolong the service life of such heat-collection well, and can obviously reduce the quantity of the used inverted well of multitube well, further save the operating cost and the maintenance cost of heat-collection well.

Water source heat pump heat-supply device for oil field well mouth of the present invention, its use operating procedure and existing water source heat pump units and heat-collection well thereof, heat exchanger require identical.Its scope of application is more extensive, both can be used for the blending agent heating that newly-built individual well is gathered, and also can be used for the transformation of the traditional heating device of old individual well.Its water source heat pump units 7 and dielectric heater 5 can also be used for the transformation of the traditional heating device of gathering station 1, and the sewage remaining energy that water source heat pump units 7 also can be used for the water-oil separating of gathering station 1 reclaims.

Claims

1, a kind of water source heat pump heat-supply device for oil field well mouth, comprise well head medium transfer tube, the heat transferring medium efferent duct that is communicated with gathering station, connect the water source heat exchanger of source pump and be assembled in the immersible pump and recharge water pipe of drawing water in the heat-collection well well casing, it is characterized in that: described well head medium transfer tube connects the heat transferring medium arrival end of dielectric heater, the heat transferring medium port of export connects the heat transferring medium efferent duct that is communicated with gathering station, the high thermal cycle pipeline of described water source heat pump units is communicated with the heating tube in the dielectric heater, the water layer bottom of recharging in the heat-collection well well casing is provided with the automatic control powerful dredge pump, integrated by the master in the pump housing of described dredge pump, the dual channel non-clogging impeller that accessory impeller constitutes, be assembled with the master, the motor the tip of the axis of accessory impeller is agitator fixedly, described agitator places in the passage of the dividing plate below in the dredge pump pedestal intake antrum, and the pump housing port of export connects the outer settling tank of well casing by the muddy water suction pipe.