CN101936158A - Test method for wellbore multiphase flow under supercritical condition - Google Patents
Test method for wellbore multiphase flow under supercritical condition Download PDFInfo
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- CN101936158A CN101936158A CN 201010255637 CN201010255637A CN101936158A CN 101936158 A CN101936158 A CN 101936158A CN 201010255637 CN201010255637 CN 201010255637 CN 201010255637 A CN201010255637 A CN 201010255637A CN 101936158 A CN101936158 A CN 101936158A
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Abstract
The invention relates to a test method for wellbore multiphase flow under the supercritical condition. In a technical scheme, when a temperature controller controls temperature to meet the requirement, a high-pressure water pump and a flow controller are used for providing high-pressure flowing liquid with rated discharge to form the test circulation of liquid; high-pressure gas is provided by a high-pressure gas compressor, a high-pressure gas tank, a drier and a gas flow controller and flows through a gas-liquid two-phase mixer, a high-pressure wellbore, a reflux pipeline and a gas-liquid separating tank to form circulation; and rated pressure can be maintained in the wellbore by controlling backpressure so that the gas flows under the supercritical condition. Furthermore, the invention can be used for researching the flow characteristics of the gas in the wellbore under the critical and supercritical conditions, establishing a wellbore multiphase flow dynamic mechanical model and a calculating method, and predicting wellbore multiphase flow pressure, and can realize a simulating test of a wellbore gas-liquid multiphase flow phenomenon under the high-temperature high-pressure critical or supercritical condition and provide technical support for three-high oil and gas field wellbore pressure predicting technology, an MPD (Magneto Plasma Dynamics) technology, a well control technology, and the like.
Description
One, technical field:
The present invention relates to the heterogeneous mobile experimental technique of pit shaft in a kind of oilfield exploitation procedure, the heterogeneous mobile experimental technique of particularly a kind of super critical condition well-sinking.
Two, background technology:
China's economy grows continuously and fast, and the demand of oil and natural gas is continued to increase, and the oil-gas mining amount of quality better can't satisfy the demands, and exploiting three high oil gas fields becomes inevitable.Southwest and the Northwest are containing the petroleum gas resource of a large amount of high pressure, high yield, high sulfur-bearing, these natural gas resources in China's energy total amount take up an area of proportion and increase gradually, just progressively become the developing focus of China's petroleum resources.But because that these regional ubiquity geological structure complexity, petroleum resources are buried is dark, strata pressure is high, output is high, some areas are with the acid gas of high concentration, make such gas reservoir development face many safety problems, exist many potential safety hazards.Therefore, the research of wellbore pressure control technology is the important subject in " completion safety technics system is bored in three high gas fields " field always.
For " three height " oil-gas reservoir, mostly bury darker, formation fluid is in supercriticality, and supercritical fluid has good dissolubility, and gas-liquid interface is unintelligible, respectively meet in the system under the super critical condition transmission of physical and chemical processes such as phase-state change or interphase mass transfer take place and energy, momentum, its result causes each physical parameter of borehole fluid to take place to change fast with well depth and time in the short time at the utmost point, makes the flowing law of annular space inner fluid become very complicated.How wait and predict that corresponding annular pressure section is a difficult point of accurately controlling wellbore pressure according to nowed forming, the phase-state change of annular space inner fluid under various different well depth conditions, the research of this respect at present is less, and the experimental technique of simulation critical condition yet there are no report.
Three, summary of the invention:
Purpose of the present invention is exactly at the heterogeneous mobile characteristics of overcritical pit shaft, by the pit shaft flooding test device of supercriticality gas-liquid two-phase fluid, provides the heterogeneous mobile experimental technique of a kind of super critical condition well-sinking.
Its technical scheme is: the multiphase flow medium is by water and air, perhaps form by water and carbon dioxide, the temperature of the pit shaft of decision critical condition is obtained by temperature control system heat cycles water, the rated operating pressure of pit shaft is obtained by the control of back pressure control system, recirculated water provides power by high-pressure hydraulic pump, and gas provides power by high-pressure compressor, and by the voltage stabilizing of high pressure gas holder buffering, finish circulation, thereby realize that the super critical condition well-sinking is heterogeneous mobile; And respectively by differential manometer, gaging pressure meter, temperature pick up etc., measure comprise flow differential pressure, pressure, temperature, etc. parameter.
Heterogeneous the flowing of above-mentioned super critical condition well-sinking is to realize by the following method:
Multiphase flow moving medium water body forms a circulation by water pot, through high-pressure hydraulic pump, flow control valve, gas-liquid two-phase blender, high pressure pit shaft, reflux pipeline, knockout drum, back pressure control system, water pot, realizes that overcritical pit shaft liquid phase flows;
Multiphase flow moving medium gas is finished a circulation by high-pressure compressor, high pressure gas holder, dryer, gas flow controller, gas-liquid two-phase blender, high pressure pit shaft, reflux pipeline, knockout drum, back pressure control system, logical atmosphere;
Water in the water tank is heated, is constituted temperature control system by temperature controller, water monitor, signal transducting wire, Industrial Personal Computer (IPC) by heating rod, to keep the pilot system temperature constant.
The invention has the beneficial effects as follows: the present invention provides a cover and can simulate under the HTHP supercriticality condition, the experimental technique of flowing law in the pit shaft of gas or gas-liquid two-phase fluid, and then can study the flow behavior of gas in pit shaft under the critical and super critical condition, set up pit shaft multiphase flow dynamic mechanical model and computational methods, prediction pit shaft multiphase flow pressure is for wellbore pressure control and artificial lift parameter optimization in the oil gas drilling lay the foundation; Can realize the simulated experiment of the pit shaft gas-liquid polyphase flow phenomenon under the critical or super critical condition of HTHP.Can be three high oil gas field wellbore pressure Predicting Techniques, MPD technology and well control technology etc. technical support is provided.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
Among the last figure: water pot 1, high-pressure hydraulic pump 2, flow control valve 3, high-pressure compressor 4, high pressure gas holder 5, dryer 6, gas flow controller 7, gas-liquid two-phase blender 8, high pressure pit shaft 9, pit shaft 10 flows, reflux pipeline 11, knockout drum 12, back pressure control system 13, pipeline 14, impedance type void content meter 15, differential manometer 16, temperature pick up 17, gaging pressure meter 18, heating rod 19, temperature controller 20, water monitor 21, temperature pick up 22, Industrial Personal Computer (IPC) 23, signal transducting wire 24, fluid level controller 25.
Five, the specific embodiment:
In conjunction with the accompanying drawings 1, gas-liquid polyphase flow flow simulating experiment research under the super critical condition is described in further detail:
The system that the present invention adopts comprises water pot 1, high-pressure hydraulic pump 2, flow control valve 3, high-pressure compressor 4, high pressure gas holder 5, dryer 6, gas flow controller 7, gas-liquid two-phase blender 8, high pressure pit shaft 9, pit shaft 10 flows, reflux pipeline 11, knockout drum 12, back pressure control system 13, pipeline 14, impedance type void content meter 15, differential manometer 16, temperature pick up 17, gaging pressure meter 18, heating rod 19, temperature controller 20, water monitor 21, temperature pick up 22, Industrial Personal Computer (IPC) 23, signal transducting wire 24, fluid level controller 25 etc.
Wherein, gas-liquid polyphase flow flow simulating experimental technique comprises as follows under the super critical condition:
Multiphase flow moving medium water body is by water pot 1, through high-pressure hydraulic pump 2, flow control valve 3, gas-liquid two-phase blender 8, high pressure pit shaft 9, reflux pipeline 11, knockout drum 12, back pressure control system 13, water pot 1, form a circulation, the counterbalance valve pressure-bearing can reach 10MPa, can realize smoothly that overcritical pit shaft is heterogeneous mobile.
Multiphase flow moving medium gas is finished a circulation by high-pressure compressor 4, high pressure gas holder 5, dryer 6, gas flow controller 7, gas-liquid two-phase blender 8, high pressure pit shaft 9, reflux pipeline 11, knockout drum 12, back pressure control system 13, logical atmosphere.
Water in the water tank 1 is heated, is constituted temperature control system by temperature controller 20, water monitor 21, signal transducting wire 24, Industrial Personal Computer (IPC) 23 by heating rod 19, and to keep the pilot system temperature constant, maximum temperature can reach 90 degree.
The void content that can in good time measure in the pit shaft by impedance type void content meter 15 in the flow process fluctuates, in order to judge flow pattern, to measure bobble rise velocity, void content velocity of wave propagation etc.; Gaging pressure meter 18, differential manometer 16 etc. in good time are in order to research pit shaft multiphase flow dynamic resistance etc., in order to the prediction wellbore pressure etc.
Claims (2)
1. heterogeneous mobile experimental technique of super critical condition well-sinking, it is characterized in that: the multiphase flow medium is by water and air, perhaps form by water and carbon dioxide, the temperature of the pit shaft of decision critical condition is obtained by temperature control system heat cycles water, the rated operating pressure of pit shaft is obtained by the control of back pressure control system, recirculated water provides power by high-pressure hydraulic pump, gas provides power by high-pressure compressor, and by the voltage stabilizing of high pressure gas holder buffering, finish circulation, realize that the super critical condition well-sinking is heterogeneous mobile; And respectively by differential manometer, gaging pressure meter, temperature pick up etc., measure comprise flow differential pressure, pressure, temperature, etc. parameter.
2. the heterogeneous mobile experimental technique of super critical condition well-sinking according to claim 1 is characterized in that: heterogeneous the flowing of super critical condition well-sinking is to realize by the following method:
Multiphase flow moving medium water body is by water pot (1), through high-pressure hydraulic pump (2), flow control valve (3), gas-liquid two-phase blender (8), high pressure pit shaft (9), reflux pipeline (11), knockout drum (12), back pressure control system (13), water pot (1), form a circulation, realize that overcritical pit shaft liquid phase flows;
Multiphase flow moving medium gas is finished a circulation by high-pressure compressor (4), high pressure gas holder (5), dryer (6), gas flow controller (7), gas-liquid two-phase blender (8), high pressure pit shaft (9), reflux pipeline (11), knockout drum (12), back pressure control system (13), logical atmosphere;
Water in the water tank (1) is heated, is constituted temperature control system by temperature controller (20), water monitor (21), signal transducting wire (24), Industrial Personal Computer (IPC) (23) by heating rod (19), to keep the pilot system temperature constant.
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| CN 201010255637 CN101936158A (en) | 2010-08-14 | 2010-08-14 | Test method for wellbore multiphase flow under supercritical condition |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128031A (en) * | 2011-01-11 | 2011-07-20 | 西南石油大学 | Simulation device and method for researching horizontal well gas-liquid two-phase pipe flow mechanism |
| CN102400674A (en) * | 2011-12-02 | 2012-04-04 | 中国石油大学(华东) | Supercritical carbon dioxide shaft multi-phase flow simulation test device |
| CN102606069A (en) * | 2012-04-01 | 2012-07-25 | 中国石油大学(华东) | Control device for phases in wellbore of supercritical carbon dioxide drilled well |
| CN104697738A (en) * | 2013-12-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Oil-gas-water multiphase flow testing device and oil-gas-water multiphase flow testing technique |
| CN105041302A (en) * | 2015-08-26 | 2015-11-11 | 中国海洋石油总公司 | Simulation experimental method and device for circulation of slurry in marine riser in deep sea drilling well |
| CN105064974A (en) * | 2015-07-10 | 2015-11-18 | 三一重型能源装备有限公司 | Motionless mixing system and sand mixer truck |
| CN106401580A (en) * | 2016-11-28 | 2017-02-15 | 中国石油大学(北京) | Multiphase flow experimental device for complex inner boundary multi-heat-source lifting shaft |
| CN109765265A (en) * | 2019-01-24 | 2019-05-17 | 中国石油大学(华东) | Measure the device and method of deep water gas well annulus logging liquid thermal insulation property |
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| EP0702211A2 (en) * | 1994-09-13 | 1996-03-20 | Agar Corporation Inc. | A high void fraction multi-phase fluid flow meter |
| CN101560880A (en) * | 2009-05-15 | 2009-10-21 | 中国石油大学(华东) | Supercritical well bore multi-phase flow test device |
-
2010
- 2010-08-14 CN CN 201010255637 patent/CN101936158A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0702211A2 (en) * | 1994-09-13 | 1996-03-20 | Agar Corporation Inc. | A high void fraction multi-phase fluid flow meter |
| CN101560880A (en) * | 2009-05-15 | 2009-10-21 | 中国石油大学(华东) | Supercritical well bore multi-phase flow test device |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128031A (en) * | 2011-01-11 | 2011-07-20 | 西南石油大学 | Simulation device and method for researching horizontal well gas-liquid two-phase pipe flow mechanism |
| CN102128031B (en) * | 2011-01-11 | 2012-03-28 | 西南石油大学 | Simulation device and method for researching horizontal well gas-liquid two-phase pipe flow mechanism |
| CN102400674A (en) * | 2011-12-02 | 2012-04-04 | 中国石油大学(华东) | Supercritical carbon dioxide shaft multi-phase flow simulation test device |
| CN102606069A (en) * | 2012-04-01 | 2012-07-25 | 中国石油大学(华东) | Control device for phases in wellbore of supercritical carbon dioxide drilled well |
| CN102606069B (en) * | 2012-04-01 | 2013-04-10 | 中国石油大学(华东) | Control device for phases in wellbore of supercritical carbon dioxide drilled well |
| CN104697738A (en) * | 2013-12-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Oil-gas-water multiphase flow testing device and oil-gas-water multiphase flow testing technique |
| CN105064974A (en) * | 2015-07-10 | 2015-11-18 | 三一重型能源装备有限公司 | Motionless mixing system and sand mixer truck |
| CN105041302A (en) * | 2015-08-26 | 2015-11-11 | 中国海洋石油总公司 | Simulation experimental method and device for circulation of slurry in marine riser in deep sea drilling well |
| CN106401580A (en) * | 2016-11-28 | 2017-02-15 | 中国石油大学(北京) | Multiphase flow experimental device for complex inner boundary multi-heat-source lifting shaft |
| CN106401580B (en) * | 2016-11-28 | 2023-07-18 | 中国石油大学(北京) | Multiphase flow experimental device for complex inner boundary multi-heat source lifting shaft |
| CN109765265A (en) * | 2019-01-24 | 2019-05-17 | 中国石油大学(华东) | Measure the device and method of deep water gas well annulus logging liquid thermal insulation property |
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Application publication date: 20110105 |