CN201437722U - Current collector capable of automatically controlling separation of gas for measuring production profile of oil well - Google Patents
Current collector capable of automatically controlling separation of gas for measuring production profile of oil well Download PDFInfo
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- CN201437722U CN201437722U CN2009201001862U CN200920100186U CN201437722U CN 201437722 U CN201437722 U CN 201437722U CN 2009201001862 U CN2009201001862 U CN 2009201001862U CN 200920100186 U CN200920100186 U CN 200920100186U CN 201437722 U CN201437722 U CN 201437722U
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- current collector
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Abstract
The utility model discloses a current collector capable of automatically controlling the separation of gases for measuring a production profile of an oil well, the main work part of which comprises an oil-water collecting passage 2, a gas separation outlet 3, a gas separation passage 4, a current collecting umbrella 5, a gas separation entrance 6, a floater switch 7, an assistant spring 8 and an oil-water current-collection entrance 9. The current collector is provided with a gas-phase separation cavity, a gas separation passage, a floater switch for controlling the gas-phase separation and an oil-water collection passage. The current collector ensures that gases are separated under the controllable conditions, and changes the complicated three-phase current to simple two-phase current, so the measurement results are more correct.
Description
Technical field:
The utility model patent is to be applied to the oil reservoir logging field, is used for the collector capable of automatically controlling gas separation of measuring production profile of oil well.
Background technology:
The purpose of oil well liquid-producing profile survey is to understand the profit production status of each payzone of oil well, and for oil well, what oil field geologic was concerned about is the produce oil and the water outlet situation of oil well, and oil well yield does not comprise gas phase.What present domestic oil well liquid-producing profile survey was mainly adopted is the afflux metering system, fluid behind the afflux in the oil well casing enters afflux and measures passage, because the reduction of stratum pressure, fluid in the present domestic oil well casing has been oil, gas, water three-phase and has deposited state, because gas phase and the significant difference of liquid phase aspect rerum natura, the flow regime of oil, gas, water three-phase is extremely complicated, and is at present various to measure by total flow and to divide the technical approach of phase content measurement all to fail to solve this measurement difficult problem.The existing various technology that is used for two-phase flow measurement, because the existence of gas phase in the oil well, measurement result and actual deviation are very big, measure even lose meaning sometimes.
Summary of the invention:
In order to overcome the deficiency in the background technology, the utility model provides a kind of collector capable of automatically controlling gas separation that is used for measuring production profile of oil well, and this current collector can realize that gas phase is separated under controlled condition, and measurement result is accurate.
The technical solution adopted in the utility model is: this collector capable of automatically controlling gas separation that is used for measuring production profile of oil well comprises top connection, the profit outlet is arranged at hollow top connection top, the top connection bottom is connected with current collecting umbrella, middle pipe is threaded in the middle part of in the top connection, there is outer tube the outside of middle pipe, outer tube is threaded with top connection and lower contact respectively, the bottom of middle pipe is connected with external pipe thread, it is the gas split tunnel that annular space is arranged between outer tube and the middle pipe, the gas that has passage separated from the gas to communicate on the top connection wall of outer tube top separates outlet, on the outer tube wall of lower contact top spring is arranged, there is float the spring top, the gas separate inlet opening that has passage separated from the gas to communicate on the outer tube wall of float correspondence, profit afflux inlet is arranged on the lower contact wall of outer tube below, the umbrella muscle bottom of current collecting umbrella is connected with the current collector slip ring, and the current collector slip ring sleeve is in the bottom of lower contact, and the current collector slip ring is connected with the current collector driving mechanism.
Above-mentioned current collecting umbrella is propped up, and the space, cross section in the sleeve pipe is closed, and in the sleeve pipe of current collecting umbrella below gas phase separation chamber, separation of oil section and aqueous phase separation section is arranged; The cavity of middle pipe and outer tube bottom is the profit collection flow channels.
The utlity model has following beneficial effect: this device is by structurally having designed switch and the profit collection flow channels of gas phase separation chamber, gas split tunnel, control gas phase separation, gas phase is separated under controlled condition, can be used for the measuring technique of oil well oil, gas, water three-phase stream, the three-phase that complicates stream is simple two phase flow.This current collector enters at fluid and before afflux is measured passage gas phase separation is gone out, and the separation of gas phase is to finish automatically, the oil-water two-phase flow amount is not subjected to the influence of gas phase separation, fluid in afflux is measured passage will become the two phase flow state so, the existing various technology that is used for two-phase flow measurement just can be used for the measurement of oil well oil, gas, water three-phase stream, the three-phase stream that complicates is simple two phase flow, thereby solves a difficult problem that always perplexs the oil well liquid-producing profile survey.The collector capable of automatically controlling gas separation that is used for the oil well multiphase flow measurement is exactly the design by the storage flow structure, gas phase is separated under controllable state, make it not enter afflux and measure passage, only finish, make measurement result accurate the measurement of profit two-phase.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Two experiment effect curve maps of accompanying drawing 2 gas-liquids.
Among the figure: the outlet of 1-profit, 2-profit collection flow channels, 3-gas separates outlet, 4-gas split tunnel, 5-current collecting umbrella, 6-gas separate inlet opening, the 7-float, 8-spring, 9-profit afflux inlet, 10-gas phase separation chamber, 11-separation of oil section, 12-current collector slip ring, 13-current collector driving mechanism, 14-sleeve pipe, 15-top connection, the 16-outer tube is managed among the 17-, the 18-lower contact.
The specific embodiment:
The utility model is described in further detail below in conjunction with embodiment:
The collector capable of automatically controlling gas separation that is used for measuring production profile of oil well comprises top connection 15, profit outlet 1 is arranged at hollow top connection 15 tops, measured profit two-phase is flowed out by profit outlet 1, top connection 15 bottoms are connected with current collecting umbrella 5, pipe 17 during the middle part is threaded in the top connection 15, the cavity of middle pipe 17 and outer tube 16 bottoms is a profit collection flow channels 2.There is outer tube 16 outside of middle pipe 17, outer tube 16 is threaded with top connection 15 and lower contact 18 respectively, the bottom of middle pipe 17 is threaded with outer tube 16, it is gas split tunnel 4 that annular space is arranged between outer tube 16 and the middle pipe 17, the gas that has passage 4 separated from the gas to communicate on top connection 15 walls of outer tube 16 tops separates outlet 3, separated gas is entered by gas separate inlet opening 6, separating outlet 3 through gas split tunnel 4 by gas flows out, on outer tube 16 walls of lower contact 18 tops spring 8 is arranged, there is float 7 spring 8 tops, spring 8 can move on the power-assisted float 7, the gas separate inlet opening 6 that has passage 4 separated from the gas to communicate on outer tube 16 walls of float 7 correspondences, profit afflux inlet 9 is arranged on lower contact 18 walls of outer tube 16 belows, the umbrella muscle bottom of current collecting umbrella 5 is connected with current collector slip ring 12, current collector slip ring 12 is enclosed within the bottom of lower contact 18, and current collector slip ring 12 is connected with current collector driving mechanism 13.
During current collector work, under the effect of current collector driving mechanism 13, current collector slip ring 12 drives the current collecting umbrella muscle, current collecting umbrella 5 is propped up, and the space, cross section in the sleeve pipe 14 is closed, and upwards oil, gas, the water three-phase that flows converges below current collecting umbrella, because density variation, the beginning Gravity Separation, gas phase is in the gas phase separation chamber 10 of the top, is followed successively by separation of oil section 11 and aqueous phase separation section downwards.
The utility model realizes that the principle of control gas separation foundation has two automatically, and one is U type tube effect, and another is that the interior each point pressure of seal air cavity equates.This structure U-shaped tube effect is constructed as follows: the pressure in the gas separate inlet opening 6 separates outlet 3-sleeve pipe-profit outlet 1-profit collection flow channels 2-profit afflux inlet 9-sleeve pipe inlet 6 outer pressure separated from the gas by gas split tunnel 4-gas and is connected.After having gas to separate in the gas phase separation chamber, the each point pressure in the chamber is all identical with the pressure that gas-oil separates at the interface.When gas-oil separates the interface when being lower than gas separate inlet opening 6 below desired locations, because U type tube effect, when the buoyancy that float is suffered and the elastic force of spring are lower than the inside and outside pressure difference of gas separate inlet opening 6, switch 3 is opened, gas phase in the gas phase separation chamber will enter annular gas split tunnel 4 by gas separate inlet opening 6, separate outlet 3 by gas and flow back in the sleeve pipe; The profit that is in the below will enter profit collection flow channels 2 by profit afflux inlet 9 mutually, be flowed back in the sleeve pipe 14 by profit outlet 1.On the contrary, when gas-oil separates the interface near gas separate inlet opening 6 below desired locations, because U type tube effect, when the buoyancy that float is suffered and the elastic force of spring are higher than the inside and outside pressure difference of gas separate inlet opening 6, switch 3 cuts out, and finishes automatic gas separation and water-oil separating and enters afflux measurement passage process.
The condition that switch is opened is determined by following formula:
P1S-P2S＞F1+F2-G
Wherein, P1 is the pressure of gas separate inlet opening inside; P2 is the suffered pressure of the outside switch of gas separate inlet opening; S is a gas separate inlet opening sectional area; F1 is the initial elastic force of switch spring when closing; F2 is the buoyancy that float is subjected to; G is the gravity of float.Therefore, after ignoring the pressure loss of profit in afflux inlet, profit outlet and collection flow channels, the unlatching of switch is by original liquid density, power assistant spring parameter and float material and volume decision in the vertical height in gas phase separation chamber, the gas split tunnel.
Current collector is a umbrella formula current collector; Current collector external diameter 28mm; Profit collection flow channels internal diameter 12mm; The gas split tunnel is an internal diameter 16mm-external diameter 14mm annular; The float material is a fluorine 4; Gas phase separation chamber vertical height is 60mm; Gas separate inlet opening sectional area 4mm
2Fig. 2 is the experiment effect in gas-liquid two-phase behind the current collector connection turbine flowmeter.The abscissa of figure is the gas phase flow, and ordinate is the turbine response, and the liquid phase flow is fixed as 10,12.3 and 15 cubic metres of every days respectively.Through observation shows that when throughput was zero, gas separates outlet did not have liquid phase to flow out, and illustrates that switch has sealed the gas separate inlet opening; When throughput constantly changed, the profit outlet did not have gas phase to flow out, and gas separation outlet has gas phase to flow out, and turbine flowmeter output simultaneously keeps relative stability.This experiment effect proves that the collector capable of automatically controlling gas separation that is used for the oil well multiphase flow measurement can realize that gas phase is separated under controlled condition.
Claims (2)
1. collector capable of automatically controlling gas separation that is used for measuring production profile of oil well, comprise top connection (15), it is characterized in that: profit outlet (1) is arranged at hollow top connection (15) top, top connection (15) bottom is connected with current collecting umbrella (5), middle pipe (17) is threaded in the middle part of in the top connection (15), there is outer tube (16) outside of middle pipe (17), outer tube (16) is threaded with top connection (15) and lower contact (18) respectively, the bottom of middle pipe (17) is threaded with outer tube (16), it is gas split tunnel (4) that annular space is arranged between outer tube (16) and the middle pipe (17), the gas that has passage separated from the gas (4) to communicate on top connection (15) wall of outer tube (16) top separates outlet (3), on outer tube (16) wall of lower contact (18) top spring (8) is arranged, there is float (7) spring (8) top, the gas separate inlet opening (6) that has passage separated from the gas (4) to communicate on outer tube (16) wall of float (7) correspondence, on lower contact (18) wall of outer tube (16) below profit afflux inlet (9) is arranged, the umbrella muscle bottom of current collecting umbrella (5) is connected with current collector slip ring (12), current collector slip ring (12) is enclosed within the bottom of lower contact (18), and current collector slip ring (12) is connected with current collector driving mechanism (13).
2. the collector capable of automatically controlling gas separation that is used for measuring production profile of oil well according to claim 1 is characterized in that: the cavity of middle pipe (17) and outer tube (16) bottom is profit collection flow channels (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201001862U CN201437722U (en) | 2009-06-19 | 2009-06-19 | Current collector capable of automatically controlling separation of gas for measuring production profile of oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201001862U CN201437722U (en) | 2009-06-19 | 2009-06-19 | Current collector capable of automatically controlling separation of gas for measuring production profile of oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201437722U true CN201437722U (en) | 2010-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201001862U Expired - Lifetime CN201437722U (en) | 2009-06-19 | 2009-06-19 | Current collector capable of automatically controlling separation of gas for measuring production profile of oil well |
Country Status (1)
| Country | Link |
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| CN (1) | CN201437722U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493801A (en) * | 2011-12-28 | 2012-06-13 | 中国石油天然气股份有限公司 | Whole-well multi-probe oil gas flow measuring device |
| CN102758609A (en) * | 2012-07-19 | 2012-10-31 | 中国石油天然气股份有限公司 | Oil well three-phase flow measuring method suitable for high water content condition |
| CN101581215B (en) * | 2009-06-19 | 2013-01-23 | 大庆油田有限责任公司 | Collector capable of automatically controlling gas separation for measuring production profile of oil well |
| CN103104255A (en) * | 2013-01-22 | 2013-05-15 | 西安交通大学 | Device and method for measuring downhole liquid production profile flow and water holding capacity |
-
2009
- 2009-06-19 CN CN2009201001862U patent/CN201437722U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581215B (en) * | 2009-06-19 | 2013-01-23 | 大庆油田有限责任公司 | Collector capable of automatically controlling gas separation for measuring production profile of oil well |
| CN102493801A (en) * | 2011-12-28 | 2012-06-13 | 中国石油天然气股份有限公司 | Whole-well multi-probe oil gas flow measuring device |
| CN102493801B (en) * | 2011-12-28 | 2015-01-21 | 中国石油天然气股份有限公司 | Whole-well multi-probe oil gas flow measuring device |
| CN102758609A (en) * | 2012-07-19 | 2012-10-31 | 中国石油天然气股份有限公司 | Oil well three-phase flow measuring method suitable for high water content condition |
| CN103104255A (en) * | 2013-01-22 | 2013-05-15 | 西安交通大学 | Device and method for measuring downhole liquid production profile flow and water holding capacity |
| CN103104255B (en) * | 2013-01-22 | 2015-08-05 | 西安交通大学 | The device and method of production profile flow and specific retention under a kind of measuring well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100414 Effective date of abandoning: 20090619 |
|
| RGAV | Abandon patent right to avoid regrant |