CN1363756A - Circulating and hot removing technology and equipment for thick oil well - Google Patents
Circulating and hot removing technology and equipment for thick oil well Download PDFInfo
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- CN1363756A CN1363756A CN 01106061 CN01106061A CN1363756A CN 1363756 A CN1363756 A CN 1363756A CN 01106061 CN01106061 CN 01106061 CN 01106061 A CN01106061 A CN 01106061A CN 1363756 A CN1363756 A CN 1363756A
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Abstract
An underground circulating-hot recovery technology for thick oil well features that the heat-carrying fluid is pumped to bottom of hollow rod, and then flows upward along the rod cavity to heat rod body and well shaft for reducing the viscosity of oil, and said fluid is returned back to heater for cyclic use. Its advantages include simple technology and structure, low cost, long service life and high oil recovering efficiency.
Description
The present invention relates to a kind of oil production technology and equipment, more particularly relate to circulation hot production practice of companion and equipment under a kind of heavy oil wells, be suitable for the oil extraction of various viscous crude and special heavy oil wells.
In the oil recovery process in oil field, in order to solve the oil reservoir viscosity reduction of heavy oil wells, adopt the process of handling up usually, be about to 210 ℃ superheated steam 2700m
3, after the pressure of 16Mpa is squeezed into oil reservoir vexed well, make oil reservoir intensification viscosity reduction.But the crude oil behind the viscosity reduction is when oil pumping, and often fast cooling retrogradation again in pit shaft causes the crude oil viscosity resistance in the pit shaft big, therefore is difficult to be lifted to ground, has brought inconvenience for normal oil extraction operation.For solving viscous crude viscosity reduction in pit shaft, have to adopt and mix thin oil technology, being about to thin oil is heated to 90-100 ℃ and pumps in the pit shaft, viscous crude is dissolved in the thin oil, thereby reach the purpose that reduces viscosity of thickened oil, this viscosity reduction troublesome poeration, complex process, work time cost are big, and thin oil yields poorly, the oil sources anxiety, sale price differential on thin oil and the viscous crude market in addition, this method is eliminated gradually; Also have and adopt electrical heating to reduce the pit shaft viscosity of thickened oil, still, this method one-time investment height, the following dark 1500 meters every cover cost of pump heater more is more than 220,000 yuan, and the power consumption height.Calculate the electricity charge of annual individual well expenditure just up to 300,000 yuan with heating power 80kw.Adopt ginseng pharmaceutical worker skill on the pump though also have, but, this viscosity reduction technology causes the hollow stem fouling of oil pumper serious, influenced the application life of equipment greatly, and chemical agent costs an arm and a leg, also will be blended into a large amount of water simultaneously, cause the too high oil production efficiency of well water amount low again, the large amount of sewage of separating has brought hidden danger for peripheral ecological environment.
The purpose of this invention is to provide circulation hot production practice of companion and equipment under a kind of heavy oil wells, not only easy to operate, technology is simple, input cost is low, power consumption is little, no ecological pollution, and device structure is simple, long service life, can reduce the interior viscous crude of pit shaft and the viscosity of special viscous crude easily, the oil recovery efficiency height.
The object of the present invention is achieved like this, the hot production practice of circulation companion is under the heavy oil wells: at first the heat transport fluid medium is heated by heater, heat transport fluid medium after the heating imports the bottom of hollow stem inner chamber by the heat pipe that probes into the hollow stem inner chamber, the heat transport fluid medium follows the hollow stem chamber again and upwards flows from the bottom of hollow stem inner chamber, make the oily temperature that hollow rod body is heated, pit shaft is interior increase viscosity reduction, the heat transport fluid medium turns back in the heater through the tee piece outlet on hollow stem top again, reheats to recycle.
The used equipment of the circulation hot production practice of companion under a kind of heavy oil wells, it includes heater, circulation pump, the inner chamber that it is characterized in that hollow stem is an annular seal space, top at hollow stem is equipped with tee piece, heat pipe places the inner chamber of hollow stem through the inlet of tee piece, the lower end mouth of pipe of heat pipe is suspended from the bottom of hollow stem inner chamber, and the inner chamber of hollow stem constitutes the three-dimensional annular space shape of " U " type chamber, also is fixed with seal cover at the inlet of tee piece.
Owing to adopted such scheme, the tee piece that has connected a sealing in the upper end of hollow stem, heat pipe passes the bottom that tee piece is inserted into hollow stem, can make heat transport fluid medium endlessly directly enter hollow stem from the bottom of hollow stem like this by heat pipe, upwards flowing is heated hollow stem integral body again, viscous crude in the pit shaft is heated simultaneously, quick viscosity reduction, not only easy to operate, technology is simple, and input cost is low, recycle in equipment owing to the heat transport fluid medium again, therefore there is not ecological pollution, it is little to consume energy, device structure is simple simultaneously, long service life, can reduce the viscosity of viscous crude and special viscous crude easily, the oil production efficiency height.
The present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the hot production practice schematic diagram of circulation companion under the heavy oil wells of the present invention.
Fig. 2 is the hot mining equipment hollow stem structural representation of down-hole circulation companion.
Fig. 3 is another tee piece embodiment constructional drawing.
In Fig. 1-2, for preventing hollow stem 2 inner chamber foulings, the heat transport fluid medium adopts demineralized water after treatment.A kind of two tons of general oil ovens of heater 12 usefulness, standby in the water tank 10 of at first WATER AS FLOW MEDIUM being packed into.Before oil pumper starts, open valve 11 earlier, by pipeline fluid media (medium) water is joined in the heater 12 and heat.Valve-off 6,11 is opened valve 8,14 and pump 13 again and is made the heat transport fluid WATER AS FLOW MEDIUM by pump 13, by the road 15 and heat pipe 3, and the intracavity bottom 5 from hollow stem 2 flows to the inner chamber 4 of hollow stem 2 at last.Fluid media (medium) follows inner chamber 4 from intracavity bottom 5 again and upwards flows, flow back to the heating that circulates in the heater 12 from the outlet 21 of the tee piece of hollow stem 2 upper ends and pipe valve 14 and pump 13 at last, by valve 14 control heat-carrying agent discharges is 8.7t/h, and the WATER AS FLOW MEDIUM temperature of heater 12 outlets is not less than 90 ℃.When heater 12 makes the circulatory mediator coolant-temperature gage reach more than 90 ℃, the temperature of hollow stem 2 reach 90 ℃, the oil temperature of oil pumping in the well casing more than 70 ℃, viscosity of thickened oil reduces, at this moment oil pumper is started working, and can will rise to ground behind the reducing thick oil viscosity from pit shaft 1 easily.Hollow stem 2 after owing to be heated pumps in well casing 1, makes the oily temperature thermally equivalent in the pumpingh well pit shaft 1.Heat transport fluid medium or be medium heat conduction oil or for superheated steam.
In the hot mining equipment of down-hole circulation companion, hollow stem 2 has the inner chamber 4 of a sealing, tee piece is threaded with the upper end mouth of pipe of hollow stem 2, inboard at tee piece inlet 20 is provided with seam, the packing circle 19 of sealing usefulness places on the seam, seal cover 18 is threaded with the inlet of tee piece, also has a heat pipe jack 17 on seal cover 18.Heat pipe 3 is a kind of have certain intensity, heat-resisting rollable flexible pipes, the jack 17 of heat pipe 3 from seal cover 18 inserts the hollow stem 2, the lower end mouth of pipe of heat pipe 3 is suspended from the bottom 5 of hollow stem 2, makes the inner chamber 4 of hollow stem 2 constitute the three-dimensional ring of " U " type cavity-like structure that begins to be heated from intracavity bottom 5.Screwing hermetic lid 18 makes 18 times pressure-conducting disk root circles 19 of seal cover with heat pipe 3 and 20 sealings of tee piece inlet.The upper end of heat pipe 3 is connected with the water inlet of the delivery port of heater 12 and storage tank 10 respectively by pipeline 15 and communicates, and the outlet 21 of tee piece is connected with the water inlet of heater 12 respectively by pipeline 16 and communicates.Pump 13, pump 7 also are housed respectively on pipeline, reach valve 6,8,9,11,14.
During work, the heat transport fluid WATER AS FLOW MEDIUM periodic duty in the equipment.Pump 7, valve 6,11 are closed, open pump 13, valve 8,14.At this moment, pump 13 is extracted the heat transport fluid WATER AS FLOW MEDIUM in hollow stem 2 inner chambers 4 out by the road from the outlet 21 of tee piece, sends heating in the heater 12 to, is heated to 90 ℃.Send heat-carrying agent the bottom 5 of hollow stem 2 inner chambers 4 to by pipeline 15 and heat pipe 3 again, heat-carrying agent follows on the inner chamber 4 and moves, and gets back to the heater 12 from the threeway outlet 21 of hollow stem 2 upper ends again.The flow of heat-carrying agent water is 8.7t/h.
When repair apparatus, valve 14,11 is closed, open pump 7 and atmospheric valve 9 heat-carrying agent water all entered in the storage tank 10, unscrew seal cover 18 simultaneously, with soft heat pipe 3 from the inner chamber 4 of hollow section 2, extract out furl standby.Also can adopt the tee piece among Fig. 3, a lifting groove 22 is arranged at the top of tee piece, be used for fixing the flexible steel wire that promotes usefulness.
Claims (5)
1, the hot production practice of circulation companion under a kind of heavy oil wells: at first the heat transport fluid medium is heated by heater, heat transport fluid medium after the heating pumps into the bottom of hollow stem inner chamber by the heat pipe that probes into the hollow stem inner chamber, the heat transport fluid medium follows the hollow stem chamber again and upwards flows from the bottom of hollow stem inner chamber, make that hollow rod body is heated, the oily temperature in the pit shaft increases viscosity reduction, the heat transport fluid medium tee piece outlet through the hollow stem top again turns back to reheat in the heater and recycles.
2, the mining equipment of the described technology of a kind of claim 1, it includes heater, circulation pump, the inner chamber that it is characterized in that hollow stem is an annular seal space, top at hollow stem is equipped with tee piece, heat pipe places the inner chamber of hollow stem through the inlet of tee piece, the inner chamber of hollow stem constitutes the three-dimensional annular space shape of " U " type chamber, and the lower end mouth of pipe of heat pipe is suspended from the bottom of hollow stem inner chamber, also is fixed with seal cover at the inlet of tee piece.
3, production practice according to claim 1 is characterized in that the heat transport fluid medium is demineralized water, medium heat conduction oil or superheated steam.
4, mining equipment according to claim 2 is characterized in that the inlet of tee piece also is connected with storage tank.
5, mining equipment according to claim 2 is characterized in that the flexible pipe of said heat pipe for curling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01106061 CN1363756A (en) | 2001-01-11 | 2001-01-11 | Circulating and hot removing technology and equipment for thick oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01106061 CN1363756A (en) | 2001-01-11 | 2001-01-11 | Circulating and hot removing technology and equipment for thick oil well |
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| Publication Number | Publication Date |
|---|---|
| CN1363756A true CN1363756A (en) | 2002-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01106061 Pending CN1363756A (en) | 2001-01-11 | 2001-01-11 | Circulating and hot removing technology and equipment for thick oil well |
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| CN (1) | CN1363756A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086967A (en) * | 2010-11-20 | 2011-06-08 | 盘锦思创空调科技有限公司 | Ground source heat pump system for crude oil heat tracing |
| CN102116144A (en) * | 2011-03-08 | 2011-07-06 | 西南石油大学 | Integrated method for thin oil blending, viscosity reduction, extraction and transportation of thickened oil |
| CN102352744A (en) * | 2011-10-31 | 2012-02-15 | 徐龙欣 | Circulating hot water heavy oil thermal recovery system for ultra-deep well and process thereof |
| CN102654047A (en) * | 2011-03-03 | 2012-09-05 | 中国石油化工股份有限公司 | Hydrothermal catalytic modification, viscosity reduction, recovery and transportation integrated method for heavy oil |
| CN106761680A (en) * | 2017-01-17 | 2017-05-31 | 西南石油大学 | A kind of chemical viscosity reduction auxiliary threaded rod pump lifts the determination methods of viscous crude technique |
| CN111827944A (en) * | 2019-04-22 | 2020-10-27 | 中国石油化工股份有限公司 | Pump-crossing closed circulating heating pipe column |
-
2001
- 2001-01-11 CN CN 01106061 patent/CN1363756A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086967A (en) * | 2010-11-20 | 2011-06-08 | 盘锦思创空调科技有限公司 | Ground source heat pump system for crude oil heat tracing |
| CN102086967B (en) * | 2010-11-20 | 2013-01-02 | 盘锦思创空调科技有限公司 | Ground source heat pump system for crude oil heat tracing |
| CN102654047A (en) * | 2011-03-03 | 2012-09-05 | 中国石油化工股份有限公司 | Hydrothermal catalytic modification, viscosity reduction, recovery and transportation integrated method for heavy oil |
| CN102654047B (en) * | 2011-03-03 | 2015-08-26 | 中国石油化工股份有限公司 | A kind of method of thick oil hydrothermal integrally catalyzing, reforming, reducing viscosity, extracting and transporting |
| CN102116144A (en) * | 2011-03-08 | 2011-07-06 | 西南石油大学 | Integrated method for thin oil blending, viscosity reduction, extraction and transportation of thickened oil |
| CN102352744A (en) * | 2011-10-31 | 2012-02-15 | 徐龙欣 | Circulating hot water heavy oil thermal recovery system for ultra-deep well and process thereof |
| CN106761680A (en) * | 2017-01-17 | 2017-05-31 | 西南石油大学 | A kind of chemical viscosity reduction auxiliary threaded rod pump lifts the determination methods of viscous crude technique |
| CN111827944A (en) * | 2019-04-22 | 2020-10-27 | 中国石油化工股份有限公司 | Pump-crossing closed circulating heating pipe column |
| CN111827944B (en) * | 2019-04-22 | 2023-02-17 | 中国石油化工股份有限公司 | Pump-crossing closed circulating heating pipe column |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |