CN103089213A - Process pipe for doping chemical agent into hollow sucker rod - Google Patents
Process pipe for doping chemical agent into hollow sucker rod Download PDFInfo
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- CN103089213A CN103089213A CN 201110373852 CN201110373852A CN103089213A CN 103089213 A CN103089213 A CN 103089213A CN 201110373852 CN201110373852 CN 201110373852 CN 201110373852 A CN201110373852 A CN 201110373852A CN 103089213 A CN103089213 A CN 103089213A
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Abstract
The invention discloses a process pipe for doping a chemical agent into a hollow sucker rod. The process pipe for doping the chemical agent into the hollow sucker rod mainly comprises a sleeve pipe (1) and an oil pipe (2) which is arranged in the sleeve pipe (1); a hollow rod (3) which is extended out of ground is arranged in the oil pipe (2); and an oil well pump (4) is also arranged in the oil pipe (2). The process pipe is suitable for oil wells which are low in ground pressure and low in flow feed capacity, and of which the crude oil is high in viscosity and high in production difficulty, and thickened oil or an oil property is similar to super heavy oil or the oil property of the super heavy oil.
Description
Technical field
The present invention relates to a kind of hollow rod and mix the chemical agent process pipe string.
Background technology
Along with Gong the utilization of conventional oil reduces day by day, heavy oil is becoming the next century mankind's important energy source.Through the effort of more than 20 years, global heavy oil industry had than conventional oil development speed faster, and the annual production of viscous crude, sand asphalt rises to nearly hundred million tons by 2,000 ten thousand tons, and its importance receives people's concern day by day.The difficulty of heavy crude reservoir exploitation is mainly manifested in two aspects: the viscosity of viscous crude is high on the one hand, and the filtrational resistance of viscous crude in oil reservoir is large, makes viscous crude not flow into the shaft bottom from oil reservoir; Even on the other hand under reservoir condition, viscous crude can flow into the shaft bottom, but in the process of vertical lifting, impact due to viscous crude factor such as degassed and radiating and cooling in pit shaft, make the viscosity of viscous crude further increase, have a strong impact on the normal operation of the mobile and oil well production equipment of formation fluid in pit shaft.
According to the interrelated data statistics, explored heavy oil resource mainly concentrates on the states such as Venezuela, the former Soviet Union, the U.S. and Canada in the world at present.The Orinoco heavy oil belt of Venezuela northeast is examined oil in place and is reached more than 3,000 hundred million tons.Half of U.S.'s heavy oil resource is distributed in Gary Fu Niya, nearly 40,000,000,000 tons of oil in place, remaining half be distributed in the continent, middle part.Canadian heavy oil resource mainly is distributed in four major sedimentary mineral reserve such as Athabasca, cold air lake, dimension Pascal and this river of Alberta, nearly 1,500 hundred million tons of oil in place.The heavy oil resource of the former Soviet Union mainly is distributed in more than 200 hundred million tons of the Ba Sainuofuyue in West Siberia basin, comprises that also there is extremely abundant viscous crude resource in other country of China.Total oil in place of these heavy oil resources adds up more than 6,000 hundred million tons, and in the world conventional oil verify 3,600 hundred million tons of oils in place, its recoverable reserves is only 90,000,000,000 tons.
The viscous crude stock number that China has found is also very abundant, and existing more than 20 of the viscous crude field of discovery is distributed in the areas such as the Liaohe River, triumph, Xinjiang, huge port, Jilin, more than estimating that Chinese heavy petroleum asphalt stock number can reach 300 * 108t.China's viscous crude (highly viscous oil, viscosity is more than 0.1Pas) resource distribution is very wide, and oil in place reaches 164 * 108t, and wherein the land viscous crude accounts for more than 20% of oil total resources.The outstanding characteristics of viscous crude are that asphalitine, gum level are higher.Colloid, the heavy oil production that asphalt content is higher account for 7% of viscous crude total output.
Connect the area in Daqing oil field, Henan, Inner Mongol two in recent years and found important heavy crude reservoir; Also find the viscous crude resource in areas such as Jianghan Oil-field, little, the Northwest Sichuan of peace.Heavy crude reservoir oil in place explored and that control has surpassed national common thin oil reserves, estimates also to have from now on new growth.
In the proved reserves of CNPC, common heavy oil accounts for 74.7%, and special viscous crude accounts for 14.4%, and super viscous crude accounts for 10.9%.
Countries in the world mainly rely on traditional thermal methods to the exploitation of high viscosity heavy oil at present, i.e. steam soak and steam flooding.The supporting technology that China's great majority adopt steam soak and pit shaft to mix thin oil is recovered the oil.This method not only consumes a large amount of fuel, but also consumes a large amount of thin oils, thereby has increased widely cost for oil production.Have bibliographical information can use the Emulsifying heavy crude producing, this method is that aqueous surfactant solution is annotated the down-hole, makes full-bodied viscous crude change low viscous oil-in-water emulsion extraction into.Reducing viscosity by emulsifying is high due to its viscosity break ratio, cost is low, easy operating, and at home and abroad all there is use in the oil field at present.But the emulsifying pour depressor that uses at present only possesses single heatproof or anti-rock salt performance, namely heatproof again the emulsifying pour depressor of anti-rock salt research and development also seldom.
The reducing viscosity by emulsifying production practice is to set up the viscosity reduction flow process in the oil-gas gathering and transportation of ground.According to the difference of adding medicine point, can be divided into individual well reducing viscosity by emulsifying, many wells of measuring station reducing viscosity by emulsifying and three kinds of ground flows of large tracts of land centralized management reducing viscosity by emulsifying; Different according to chemical agent and crude oil mixing point can be divided into again reducing viscosity by emulsifying technology in ground reducing viscosity by emulsifying and pit shaft.
The individual well reducing viscosity by emulsifying is in the well mouth of oil well dosing, then thinner is mixed oil sets annular space (or in hollow rod).Many wells of measuring station reducing viscosity by emulsifying is for the ease of centralized management, completes dosing, pressurization, heating and metering at the measuring station main pipe line, and then is assigned to each well, reaches the purpose of viscosity reduction.Large tracts of land centralized management reducing viscosity by emulsifying is to carry out dosing at block station, and the advantage of this mode is: equipment is simple, is easy to centralized management.
Ground reducing viscosity by emulsifying method is applicable to that oil well can normally be produced, the oil well of flow difficulties in the surface gathering and transferring pipeline.Crude oil mixes forming emulsion with activator solution through the well head oil water mixer after the oil well output, be transported to oil gathering station by petroleum pipeline.In pit shaft, reducing viscosity by emulsifying technique is that packer and ball-and-seat are housed on oil pipe, thinner solution by the oil jacket annular space by ball-and-seat enter oil pipe and with emulsification of crude oil (or hollow rod adds thinner and emulsification of crude oil), reach the purpose of viscosity reduction.According to the relative position of ball-and-seat and oil well pump, this technology can be divided into again on pump reducing viscosity by emulsifying under reducing viscosity by emulsifying and pump.
Reducing viscosity by emulsifying technical requirements thinner concentration of aqueous solution is wanted suitably can not form oil-in-water emulsion if concentration is too low; The further amplitude that descends of emulsion viscosity is little, uneconomical for excessive concentration.And some chemical agent (as caustic soda, water glass etc.), easily form WO emulsion when high concentration, viscosity of crude is raise.Temperature is little to established emulsion viscosity influence, but it affects emulsifying effectiveness.Experiment shows, along with temperature raises, emulsifying effectiveness improves.The water liquor ratio refers to the ratio of active water and production fluid total amount, and it directly affects type, viscosity and the well oil output of emulsion.The depth of dusting power drug agent point position will directly affect the flow resistance of wellbore fluids and efficient and the benefit situation of oil well production system.Reasonably dusting power drug point position must guarantee that the flox condition of wellbore fluids obtains improving preferably the high efficiency with oil well production, and satisfies the requirement of capacity of equipment.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, provide a kind of hollow rod to mix the chemical agent process pipe string, this hollow rod is mixed the chemical agent process pipe string and is applicable to that strata pressure is low, feed flow is poor; Viscosity of crude is high, production difficulty is large; The oil well that viscous crude or oil property are close with super viscous crude.
Purpose of the present invention is achieved through the following technical solutions: hollow rod is mixed the chemical agent process pipe string, mainly is made of sleeve pipe, the oil pipe that is arranged on inside pipe casing, and the inside of described oil pipe is provided with the hollow stem that extends ground.
The inside of described oil pipe also is provided with oil well pump.
State solid hopkinson bar is installed on oil well pump.
Described solid hopkinson bar is arranged on the inside of hollow stem away from an end of oil well pump.
In sum, the invention has the beneficial effects as follows: be applicable to that strata pressure is low, feed flow is poor; Viscosity of crude is high, production difficulty is large; The oil well that viscous crude or oil property are close with super viscous crude
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
As shown in Figure 1, the hollow rod that the present embodiment relates to is mixed the chemical agent process pipe string, mainly is made of sleeve pipe 1, the oil pipe 2 that is arranged on sleeve pipe 1 inside, and the inside of described oil pipe 2 is provided with the hollow stem 3 that extends ground.
The inside of described oil pipe 2 also is provided with oil well pump 4.
On described oil well pump 4, solid hopkinson bar 5 is installed.
Described solid hopkinson bar 5 is arranged on the inside of hollow stem 3 away from an end of oil well pump 4.
The course of work of the present invention is: hollow rod is connected with the flow process that chemical agent is mixed on ground, chemical agent empty passage in the hollow rod injects, the liquid device of mixing through hollow rod bottom flows in oil pipe and mixes with the extraction fluid of oil reservoir, makes crude oil generation reducing viscosity by emulsifying then be given rise to ground.Hollow rod is mixed chemical agent and is applicable to that strata pressure is low, feed flow is poor; Viscosity of crude is high, production difficulty is large; The oil well that viscous crude or oil property are close with super viscous crude.
The above is only preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and every foundation technical spirit of the present invention, any simple modification, equivalent variations that above embodiment is done are within all falling into protection scope of the present invention.
Claims (4)
1. hollow rod is mixed the chemical agent process pipe string, it is characterized in that, mainly by sleeve pipe (1), be arranged on the inner oil pipe (2) of sleeve pipe (1) and consist of, the inside of described oil pipe (2) is provided with the hollow stem (3) that extends ground.
2. hollow rod according to claim 1 is mixed the chemical agent process pipe string, it is characterized in that, the inside of described oil pipe (2) also is provided with oil well pump (4).
3. hollow rod according to claim 2 is mixed the chemical agent process pipe string, it is characterized in that, solid hopkinson bar (5) is installed on described oil well pump (4).
4. hollow rod according to claim 3 is mixed the chemical agent process pipe string, it is characterized in that, described solid hopkinson bar (5) is arranged on the inside of hollow stem (3) away from an end of oil well pump (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110373852 CN103089213A (en) | 2011-11-07 | 2011-11-07 | Process pipe for doping chemical agent into hollow sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110373852 CN103089213A (en) | 2011-11-07 | 2011-11-07 | Process pipe for doping chemical agent into hollow sucker rod |
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| Publication Number | Publication Date |
|---|---|
| CN103089213A true CN103089213A (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110373852 Pending CN103089213A (en) | 2011-11-07 | 2011-11-07 | Process pipe for doping chemical agent into hollow sucker rod |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089561A (en) * | 2014-05-09 | 2015-11-25 | 中国石油化工股份有限公司 | Constant-displacement pump-passing dosing lifting process |
| CN112495288A (en) * | 2021-02-05 | 2021-03-16 | 山东奥士德石油技术有限公司 | Oil gas development viscosity reducer whirl blending machine |
-
2011
- 2011-11-07 CN CN 201110373852 patent/CN103089213A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089561A (en) * | 2014-05-09 | 2015-11-25 | 中国石油化工股份有限公司 | Constant-displacement pump-passing dosing lifting process |
| CN112495288A (en) * | 2021-02-05 | 2021-03-16 | 山东奥士德石油技术有限公司 | Oil gas development viscosity reducer whirl blending machine |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130508 |