CN200949466Y - Gas overflow type confluent-liquid umbrella - Google Patents
Gas overflow type confluent-liquid umbrella Download PDFInfo
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- CN200949466Y CN200949466Y CN 200620139160 CN200620139160U CN200949466Y CN 200949466 Y CN200949466 Y CN 200949466Y CN 200620139160 CN200620139160 CN 200620139160 CN 200620139160 U CN200620139160 U CN 200620139160U CN 200949466 Y CN200949466 Y CN 200949466Y
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Abstract
An air leaking type confluent liquid umbrella applied in field of oilfield measurement which mainly solves the problems of large liquid flow and water content errors measured by an annulus space water detector in condition of current confluent liquid umbrella structure. The characteristic is: a lower liquid inlet (2) is arranged on one side of a connecting joint (6) which is adjacent to the lower end of the central pipe (7) in the umbrella, an upper edge of the lower liquid inlet (2) is located below the plane of an umbrella cloth (4) bottom edge when the confluent liquid umbrella is in an open state. The air leaking type confluent liquid umbrella can make three phase flow of oil, gas and water which moves up separate by different density when the three phase flow reach the position of confluent liquid umbrella, almost all liquid flow through a sensor via an instrument liquid inlet, the gas flowing into the liquid inlet is controlled as little as possible, thus an influence of measurement by oil well gas is greatly eliminated, and the accuracy of liquid flow and water content measurement by annulus space water detector is improved.
Description
Technical field:
The utility model relates to a kind of oil field that is applied in and measures the device that is used for the annular space of enclosed instrument and sleeve pipe in the logger of fluid producing layer flow and moisture content, especially relates to a kind of umbrella formula current-collecting device.
Background technology:
The logger of measuring fluid producing layer flow and moisture content in the oil well of pumping production is called through annulus water searcher, and it mainly is made up of current collector, flow meter and three parts of moisture content meter.The effect of current collector is the annular space of enclosed instrument and sleeve pipe, and the fluid in the pit shaft is as far as possible all flow through in sensor.Like this, can improve flow rate of fluid greatly on the one hand, reach the startup discharge capacity of flow meter; Can keep the stable of fluidised form on the other hand, reduce the influence of fluidised form, adopt current collector to help the accurate measurement of flow and moisture content measurement of water ratio.Current collector divides two kinds of ball formula current collector and umbrella formula current collectors, and ball formula current collector wastage is less, catchment effect is better, but easily broken because of it, thereby causes the well logging success rate low, seldom uses at present.Umbrella formula current collector afflux is reliable, well logging success rate height, thereby in the oil well production well logging, obtained extensive use, but, have certain leakage in the contact position because of being hard the contact between its umbrella muscle and the borehole wall, and it is bigger than normal that the lower limit that causes measuring flow starts discharge capacity.The frame for movement sectional drawing of common current collecting umbrella as shown in Figure 1, it is made up of umbrella inner central tube, umbrella muscle and umbrella cloth.The umbrella inner central tube is the core component of current collecting umbrella, and its interior pull-type frame for movement makes current collecting umbrella to open and close according to the needs of well logging.Be uniform-distribution with 4 on central tube top apart from sharp 2 centimeters of umbrella and be about 2 centimetres wide about 1 centimetre inlets.The umbrella muscle is a strip, elastomeric thin bonding jumper, always has 16, they be evenly distributed in current collecting umbrella around, be mainly used to fixing and support umbrella cloth.Umbrella cloth is a kind of high-intensity thin fabric, and matter is close airtight, is used for annular space between hermetically-sealed instrument and the sleeve pipe.In the through annulus water searcher, the measurement of flow adopts turbine flowmeter to realize.For oil-water two-phase flow because liquid is incompressible, when fluid by the turbine flow timing, the revolution of turbine is linear with the volume flow by fluid, therefore can measure the production fluid amount of oil well by the revolution of measuring turbine exactly.Coaxial line phase place moisture content meter is adopted in the measurement of water ratio in oil well, and it is with the medium of oil-water mixture as coaxial transmission line, measures moisture content by measuring electromagnetic transmission phase difference on the certain-length coaxial line.The parameter that needs in the daily management of oil field to a bite well to understand is the production fluid amount and the moisture content of this well.The oil recovery factory normally carries out the metering of certain hour with the glass tube oil gauge method to the oil-water mixture of the degassing on the ground the measuring tank for the monitoring of the production fluid amount of a bite oil well and moisture content and obtains.Because anaerogenic oil well almost is non-existent on the oil field, when adopting common current collecting umbrella to carry out actual well logging, its measurement result and ground gauging difference as a result are very big, and what basic reason was that the down-hole adopts that the through annulus water searcher of common current collecting umbrella measures is that oil, gas, water three-phase flow but not oil-water two-phase flow.During with common current collecting umbrella afflux, oil, gas, water three-phase stream can directly enter central tube by inlet in current collecting umbrella, and upwards flow through current collecting umbrella in central tube inside by the liquid flow path direction, enter turbine flowmeter and coaxial line phase place moisture content meter.Compressibility because of gas, foundation is very difficult by the model that oil, gas, water three-phase flow measurement are asked for fluid flow and moisture content, thereby under three-phase stream situation, be difficult to survey the flow of accurate liquid by turbine flowmeter, and the measurement of moisture content when flowing for three-phase, because the influence of gas phase equally also is difficult to survey the moisture content of accurate oil well liquid phase.The afflux process of common current collecting umbrella when well logging as shown in Figure 3.Because the moisture content that the flow of turbine flowmeter measurement fluid and moisture content meter are measured fluid all is subjected to the influence of the gas flow of output in the oil well, in order to investigate this influence of gas qualitatively, utilize common current collecting umbrella through annulus water searcher, in the multiphase flow simulation well, it has been carried out experimental study, the liquid of tap water simulation oil well output, the gas of air simulation oil well output.When the water yield is respectively 5m
3/ d, 10m
3/ d and 15m
3Under/d the situation, regulate that tolerance is respectively 0.6,0.8,1.0,1.2,1.5m
3/ h experimentizes, and its measurement result is seen Fig. 5 and Fig. 6.As seen from Figure 6, common current collecting umbrella when anaerogenic liquid is carried out flow measurement, along with fluid flow from 5,10 to 15m
3When/d linearity increased, measured flow pressed 5,10 basically to 15m
3/ d is linear to be increased; And when oil well had the gas output, gas entered the turbine flowmeter of instrument internal with liquid stream from the instrument inlet, and the flow that turbine flowmeter records increases, and is subjected to the gas flow effect very big.As seen from Figure 5, common current collecting umbrella is when carrying out measurement of water ratio to anaerogenic liquid, and for given identical moisture content but the different liquid of flow, measured moisture content is identical; And when oil well had the gas output, gas entered the moisture content meter of instrument internal from the instrument inlet with liquid stream, and moisture content meter records moisture content to be reduced greatly.
Show that more than under the common current collecting umbrella situation, for through annulus water searcher, the oil well aerogenesis will produce very important influence to oil well liquid flow measurement and measurement of water ratio.Need take new measure to reduce the influence of oil well aerogenesis, to guarantee the fluid flow that through annulus water searcher is measured and the confidence level of moisture content.
The utility model content:
Through annulus water searcher measures fluid flow and the bigger problem of moisture content error under use existing structure current collecting umbrella condition in order to solve, the utility model provides a kind of excessive gas type current collecting umbrella, the excessive gas type of this kind current collecting umbrella can make the oil that moves upward in the well, gas, the water three-phase flows to when reaching the current collecting umbrella position and separates owing to density is different, and then make most liquid by instrument inlet flows through sensor, the least possible gas that makes enters, thereby greatly got rid of of the influence of oil well aerogenesis, improved the precision that through annulus water searcher measures fluid flow and moisture content measuring.
The technical solution of the utility model is: the excessive gas type of this kind current collecting umbrella, comprise current collecting umbrella upper end connector, lower end connector, umbrella cloth, umbrella muscle, umbrella inner central tube, and these are all identical with original structure.Unique distinction is: variation has taken place in the aperture position according to inlet on original umbrella inner central tube, side near the lower end connector has the lower end inlet with the cancellation of original inlet and on the umbrella inner central tube, and the end of umbrella cloth was along the below on plane, place when the upper edge of described lower end inlet was located at current collecting umbrella and is in open mode.
In addition, that is exactly to have the upper end inlet near the upper end umbrella tip simultaneously on the umbrella inner central tube to also have a kind of prioritization scheme, and on the outer wall of umbrella inner central tube between upper end inlet and the lower end inlet, be fixed with a controlled slip pipe, this controlled slip pipe can be in the umbrella inner central tube in the outer wall of machine drawing tool effect lower edge umbrella inner central tube slide up and down.Like this, when people need use the current collecting umbrella of traditional structure, just can controlled slip pipe is drop-down, close the lower end inlet, expose the upper end inlet.
The utlity model has following beneficial effect: when oil well is crossed annular space water detection well logging, after taking such scheme, the oil that moves upward in the well, gas, water three-phase flow to when reaching the current collecting umbrella position and separate owing to density is different, gas is because the little umbrella point position that at first occupies of density forms pneumatic jack, crude oil is positioned at that to form oil below the pneumatic jack stifled, is water below the oil reservoir.Carrying out along with afflux, the pneumatic jack volume continues to increase and expansion downwards, the end that arrives umbrella cloth when the bottom surface of pneumatic jack along the time, because there are micro gap in umbrella muscle and borehole wall place, and the viscosity of gas is very little, so gas will directly be missed outside the umbrella by the slit, and crude oil is owing to there is higher relatively viscosity, himself miss and to ignore, stoped simultaneously the leakage of water again, the inlet of gas type current collecting umbrella is positioned at the bottom of the umbrella cloth below the plane that surrounds because overflow, this structure makes the gas in the crude oil, liquid is separated, almost make whole liquid by instrument inlet flows through sensor, measure closing layer production fluid amount and closing a layer moisture content of oil well respectively, thereby greatly got rid of of the influence of oil well aerogenesis measuring by turbine flowmeter and moisture content meter.
Description of drawings:
Fig. 1 is the frame for movement sectional view of common current collecting umbrella.
Fig. 2 is the frame for movement sectional view of excessive gas type current collecting umbrella.
Gas, liquid flow process schematic diagram when Fig. 3 is common current collecting umbrella afflux.
Fig. 4 is gas when overflowing gas type current collecting umbrella afflux, liquid flow process schematic diagram.
Gas was to the data and curves figure of moisture content influence when Fig. 5 was to use common current collecting umbrella afflux.
The data and curves figure of gaseous exchange amount influence when Fig. 6 is to use common current collecting umbrella afflux.
Fig. 7 is to use the data and curves figure of gaseous exchange amount influence when overflowing gas type current collecting umbrella afflux.
Fig. 8 is to use the data and curves figure that gas influences moisture content when overflowing gas type current collecting umbrella afflux.
1-current collecting umbrella upper end connector among the figure, 2-lower end inlet, 3-upper end umbrella point, 4-umbrella cloth, 5-umbrella muscle, 6-lower end connector, 7-umbrella inner central tube.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 2, the excessive gas type of this kind current collecting umbrella comprises current collecting umbrella upper end connector 1, lower end connector 6, umbrella cloth 4, umbrella muscle 5, umbrella inner central tube 7, and these are all identical with original structure.Unique distinction is: variation has taken place in the aperture position according to inlet on original umbrella inner central tube 7, side near lower end connector 6 has lower end inlet 2 with the cancellation of original inlet and on umbrella inner central tube 7, and the end of umbrella cloth was along the below on plane, place when the upper edge of described lower end inlet 2 was located at current collecting umbrella and is in open mode.
Separate owing to density is different when the oil that moves upward in the well, gas, water three-phase flow to when reaching the current collecting umbrella position like this, gas is because the little umbrella point position that at first occupies of density forms pneumatic jack, and crude oil is positioned at and forms oil below the pneumatic jack and block up, and is water below the oil reservoir.Carrying out along with afflux, the pneumatic jack volume continues to increase and expansion downwards, the end that arrives umbrella cloth when the bottom surface of pneumatic jack along the time, because there are micro gap in umbrella muscle and borehole wall place, and the viscosity of gas is very little, so gas will directly be missed outside the umbrella by the slit, and oil is owing to there is higher relatively viscosity, himself miss and to ignore, gas when gas type current collecting umbrella afflux is overflow in use, liquid flow process are as shown in Figure 4, almost make whole liquid by instrument inlet flows through sensor, have only few gas to enter.After the flows through sensor, measure closing layer production fluid amount and closing a layer moisture content of oil well respectively by turbine flowmeter and moisture content meter.
In order to investigate gas, the liquid separating effect of the gas type current collecting umbrella that overflows qualitatively, still adopt same through annulus water searcher, and change its current collector into the gas type current collecting umbrella that overflows by common current collecting umbrella, in the multiphase flow simulation well, carry out the gases affect experiment.With the liquid of tap water simulation oil well output, the gas of air simulation oil well output.When the water yield is respectively 5m
3/ d, 10m
3/ d and 15m
3Under/d the situation, regulate that tolerance is respectively 0.6,0.8,1.0,1.2,1.5m
3/ h tests, and its measurement result as shown in Figure 7 and Figure 8.As seen from Figure 7, overflow gas type current collecting umbrella when anaerogenic liquid is carried out flow measurement, along with fluid flow from 5,10 to 15m
3When/d linearity increased, measured flow pressed 5,10 basically to 15m
3/ d is linear to be increased; And work as the oil well gas production less than 15m
3During/d, gas, the liquid centrifugation of the gas type current collecting umbrella that overflows make very big portion gas miss from the micro gap that forms between the umbrella muscle and the borehole wall, thereby make the oil well aerogenesis reduce greatly the measurement influence of oil well liquid-producing flow; When the oil well gas production greater than 15m
3During/d, be subjected to the umbrella muscle of current collecting umbrella and the micro gap between the borehole wall to the limitation of gas loss, some gas is flow to into sensor with liquid, gaseous exchange measurement amount can produce some influences, but this influence is compared with common current collecting umbrella and wanted much little.As seen from Figure 8, overflow gas type current collecting umbrella when anaerogenic liquid is carried out measurement of water ratio, for given identical moisture content but the different liquid of flow, measured moisture content is identical.And work as the oil well gas production less than 15m
3During/d, gas, the liquid centrifugation of the gas type current collecting umbrella that overflows make most of gas miss from the micro gap that forms between the umbrella muscle and the borehole wall, and the oil well aerogenesis reduces greatly to the measurement influence of water ratio in oil well; When the oil well gas production greater than 15m
3During/d, be subjected to the umbrella muscle of current collecting umbrella and the micro gap between the borehole wall limitation to gas loss, a part of gas will flow to into instrument with liquid, the influence that gas produces some to measurement of water ratio, but that this influence is compared with common current collecting umbrella is much also little.This shows, in crossing annular space water detection well logging, the gas type current collecting umbrella that overflows greatly reduces the influence of oil well aerogenesis to well liquid phase flow rate and measurement of water ratio owing to have gas, liquid centrifugation, therefore can improve certainty of measurement, reduce the gap of underground survey and well head ground survey.
In addition, that is exactly to have the upper end inlet near the upper end umbrella tip simultaneously on the umbrella inner central tube to also have a kind of prioritization scheme, and on the outer wall of umbrella inner central tube 7 between upper end inlet and the lower end inlet 2, being fixed with a controlled slip pipe, the outer wall of the interior machine drawing tool effect lower edge umbrella inner central tube 7 that this controlled slip pipe can be in umbrella inner central tube 7 slides up and down.Like this, when people need use the current collecting umbrella of traditional structure, just can controlled slip pipe is drop-down, close lower end inlet 2, expose the upper end inlet.Usually the interior machine drawing tool of current collecting umbrella is that a small size motor drives the open and close that screw is controlled current collecting umbrella, can spur controlled slip pipe by same screw on this basis.
For saving material, can consider this controlled slip pipe is decided to be along the lower position that umbrella inner central tube 7 outer walls slide the edge, lower end of lower end inlet 2, upper limit position is decided to be the upper edge of upper end inlet.The length of this controlled slip pipe is changeable, but for the consideration that reduces frame for movement movement length in the umbrella inner central tube, can make the length of this controlled slip pipe equal the distance between the corresponding edge between upper end inlet and the lower end inlet 2.When realizing that by this improvement project when lower end inlet 2 was sealed in the lower end that controlled slip pipe slides into umbrella inner central tube 7, the gas type current collecting umbrella that overflows had become the plain edition current collecting umbrella again.And measuring point can be disposable to liquid generated underground overflow gas type afflux and the measurement of plain edition afflux dual mode, can judge the aerogenesis situation of this measuring point to a certain extent qualitatively.
Claims (4)
1, a kind of excessive gas type current collecting umbrella, comprise current collecting umbrella upper end connector (1), lower end connector (6), umbrella cloth (4), umbrella muscle (5), umbrella inner central tube (7), it is characterized in that: go up the below of the end of the upper edge that has lower end inlet (a 2) described lower end inlet (2) near lower end connector (6) one sides umbrella cloth (4) when being located at current collecting umbrella and being in open mode along the plane, place at umbrella inner central tube (7).
2, excessive gas type current collecting umbrella according to claim 1, it is characterized in that: go up near upper end umbrella point (3) at umbrella inner central tube (7) and locate to have the upper end inlet, on the outer wall of umbrella inner central tube (7) between upper end inlet and the lower end inlet (2), be fixed with a controlled slip pipe, in described controlled slip pipe and the umbrella inner central tube (7) in the machine drawing tool connect mutually.
3, excessive gas type current collecting umbrella according to claim 2 is characterized in that: described controlled slip pipe is the edge, lower end of lower end inlet (2) along the lower position that umbrella inner central tube (7) outer wall slides, and upper limit position is the upper edge of upper end inlet.
4, excessive gas type current collecting umbrella according to claim 3 is characterized in that: the length of described controlled slip pipe equals the distance of corresponding edge between upper end inlet and the lower end inlet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139160 CN200949466Y (en) | 2006-09-08 | 2006-09-08 | Gas overflow type confluent-liquid umbrella |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139160 CN200949466Y (en) | 2006-09-08 | 2006-09-08 | Gas overflow type confluent-liquid umbrella |
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|---|---|
| CN200949466Y true CN200949466Y (en) | 2007-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620139160 Expired - Fee Related CN200949466Y (en) | 2006-09-08 | 2006-09-08 | Gas overflow type confluent-liquid umbrella |
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| CN (1) | CN200949466Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434150A (en) * | 2011-11-07 | 2012-05-02 | 中国石油天然气股份有限公司 | Telescopic rubber ball current collector |
| CN102505931A (en) * | 2011-11-23 | 2012-06-20 | 西安思坦仪器股份有限公司 | Gas-liquid separating and oil-water-gas three-phase flow measuring device |
| CN103089255A (en) * | 2012-12-14 | 2013-05-08 | 西安石天电子有限责任公司 | Multi-phase flow logging instrument adopting full flow-collecting dynamic interface tracking method |
| CN106437676A (en) * | 2016-09-07 | 2017-02-22 | 中国石油天然气股份有限公司 | Double-stage umbrella type fluid-collecting device with exhaust function |
| CN106593434A (en) * | 2016-12-12 | 2017-04-26 | 中国石油天然气股份有限公司 | Horizontal well oil pipe conveying electrodynamic type current collecting device |
| CN107587869A (en) * | 2017-07-28 | 2018-01-16 | 中国石油天然气股份有限公司 | A kind of underground real-time gas current divider and system for liquid producing profile log |
| CN109632386A (en) * | 2019-01-17 | 2019-04-16 | 西南石油大学 | A kind of intelligence umbrella rack-and-pinion supporting leg differential type sampler |
| CN114776288A (en) * | 2022-06-21 | 2022-07-22 | 陕西华晨石油科技有限公司 | Multi-probe oil-finding production profile logging instrument |
-
2006
- 2006-09-08 CN CN 200620139160 patent/CN200949466Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434150A (en) * | 2011-11-07 | 2012-05-02 | 中国石油天然气股份有限公司 | Telescopic rubber ball current collector |
| CN102434150B (en) * | 2011-11-07 | 2014-09-17 | 中国石油天然气股份有限公司 | Telescopic rubber ball current collector |
| CN102505931A (en) * | 2011-11-23 | 2012-06-20 | 西安思坦仪器股份有限公司 | Gas-liquid separating and oil-water-gas three-phase flow measuring device |
| CN103089255A (en) * | 2012-12-14 | 2013-05-08 | 西安石天电子有限责任公司 | Multi-phase flow logging instrument adopting full flow-collecting dynamic interface tracking method |
| CN106437676A (en) * | 2016-09-07 | 2017-02-22 | 中国石油天然气股份有限公司 | Double-stage umbrella type fluid-collecting device with exhaust function |
| CN106593434A (en) * | 2016-12-12 | 2017-04-26 | 中国石油天然气股份有限公司 | Horizontal well oil pipe conveying electrodynamic type current collecting device |
| CN107587869A (en) * | 2017-07-28 | 2018-01-16 | 中国石油天然气股份有限公司 | A kind of underground real-time gas current divider and system for liquid producing profile log |
| CN109632386A (en) * | 2019-01-17 | 2019-04-16 | 西南石油大学 | A kind of intelligence umbrella rack-and-pinion supporting leg differential type sampler |
| CN109632386B (en) * | 2019-01-17 | 2021-03-23 | 西南石油大学 | Intelligent differential sampler with umbrella-shaped gear rack supporting legs |
| CN114776288A (en) * | 2022-06-21 | 2022-07-22 | 陕西华晨石油科技有限公司 | Multi-probe oil-finding production profile logging instrument |
| CN114776288B (en) * | 2022-06-21 | 2022-09-16 | 陕西华晨石油科技有限公司 | Multi-probe oil-finding production profile logging instrument |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 Termination date: 20110908 |