CN102587885A - Device and method for metering crude oil output of wellhead - Google Patents
Device and method for metering crude oil output of wellhead Download PDFInfo
- Publication number
- CN102587885A CN102587885A CN2012100171097A CN201210017109A CN102587885A CN 102587885 A CN102587885 A CN 102587885A CN 2012100171097 A CN2012100171097 A CN 2012100171097A CN 201210017109 A CN201210017109 A CN 201210017109A CN 102587885 A CN102587885 A CN 102587885A
- Authority
- CN
- China
- Prior art keywords
- pressure difference
- difference transmitter
- crude oil
- transmitter
- oil output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a device and a method for metering crude oil output of a wellhead. The device comprises a liquid inlet through pipe and a liquid outlet through pipe which are connected with a U-shaped pipe, a check valve and a filter valve are arranged on the liquid inlet through pipe, a liquid inlet end of the U-shaped pipe is provided with a first pressure difference transmitter and a second pressure difference transmitter, a liquid outlet end of the U-shaped pipe is provided with a flow transmitter, a third pressure difference transmitter and a fourth pressure difference transmitter are arranged on the liquid outlet through pipe, and a central processing unit receives signals, computes the crude oil output and then displays the crude oil output. The device for metering the crude oil output of the wellhead is used for continuously and accurately metering produced liquid of an oil production well under self-pressure conditions, and effectively solving the problems that an oil well cannot be metered due to associated gas of the produced liquid of the oil well, liquid volume is low, and oil intermittently flowing out of the oil well is inaccurately metered.
Description
Technical field
The invention belongs to the crude oil measurement device, relate to a kind of well head crude oil output metering device and method of measurement.
Background technology
At present, oil well production crude oil water containing real time dynamic measurement mainly is divided into dual mode, does not promptly separate metering and part separate measurement dual mode.Not separating method of measurement is software gauging and novel intelligent multi-phase flowmeter, and this method requires oil well production stable, and its measuring result error is bigger, and input cost is higher; And part separate measurement method adopts the gas-liquid separation method of measurement more; This method has a lot; On application principle, mainly contain metering room metering, tipping bucket metering, scale car, etc., require this measuring method of oil well be suitable for more oil well low moisture, continuously go out oil viscosity not high oil well.Be not suitable for high moisture, discontinuous fuel-displaced oil well.Therefore, exist the problem that crude oil can't real time dynamic measurement of producing for this part oil well.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of well head crude oil output metering device and method of measurement, has solved low liquid measure and the inaccurate problem of producing well metering at intermittence effectively.
The present invention realizes through following technical scheme:
A kind of well head crude oil output metering device; Comprise the feed liquor siphunculus and the fluid siphunculus that are connected with U type pipe; The feed liquor siphunculus is provided with ball-and-seat and strainer valve; Liquid feeding end at U type pipe is provided with first pressure difference transmitter and second pressure difference transmitter, is provided with flow transmitter at the outlet end of U type pipe, on the fluid siphunculus, is provided with the 3rd pressure difference transmitter and the 4th pressure difference transmitter;
First pressure difference transmitter and second pressure difference transmitter, the 3rd pressure difference transmitter and the 4th pressure difference transmitter, flow transmitter are transferred to CPU with detected signal, and CPU shows after calculating the crude oil output.
Described first pressure difference transmitter and second pressure difference transmitter are installed in the vertical pipeline section of U type pipe, and the 3rd pressure difference transmitter and the 4th pressure difference transmitter are installed on the horizontal pipeline section of fluid siphunculus.
Described first pressure difference transmitter and second pressure difference transmitter distance L apart equal the 3rd pressure difference transmitter and the 4th pressure difference transmitter distance L apart.
The vertical pipeline section of described U type pipe and the cross sectional shape of the horizontal pipeline section of fluid siphunculus, size are all identical.
The bottom of described U type pipe also is provided with atmospheric valve.
Described CPU also is transferred to remote display through connecting line with the crude oil output data and shows.
A kind of well head crude oil output method of measurement may further comprise the steps:
1) with ball-and-seat with after feed line is connected; After well head output crude oil filters through strainer; Enter in the U type pipe; First pressure difference transmitter and second pressure difference transmitter detect the pressure differential deltap P of the interior vertical section of U pipe at a distance of L, are transferred to CPU then, and the flow transmitter of U type pipe outlet end setting detects the volume V of crude oil in the current U type pipeline; The 3rd pressure difference transmitter on the fluid siphunculus and the 4th pressure difference transmitter detect the pressure differential deltap P ' of the horizontal siphunculus section of fluid siphunculus at a distance of L, are transferred to CPU then;
2) CPU calculates the density γ of crude oil according to γ=(Δ P-Δ P ')/L;
Calculate the instantaneous production fluid amount of oil well Q then
T=γ * V calculates the oil well cumulative liquid production Q=γ * V * Δ T in the Δ T time at last.
Compared with prior art, the present invention has following beneficial technical effects:
Well head crude oil output metering device provided by the invention through the design of U type pipe and horizontal fluid siphunculus, just can be realized the calculating of instantaneous production fluid amount of oil well and oil well cumulative liquid production again through two groups of pressure difference transmitters and flow transmitter; This apparatus structure is simple, the installation maintenance is convenient, continuous performance is good, accurate measurement provides reliable basis for the production dynamic management.Further, computer center carried out remote transmission through connecting line after, can also realize the data remote function.
Well head crude oil output metering device provided by the invention; Realized that fluid produced by oil production well is in metering accurately continuously under press strip spare; Solve produced liquid in oil well effectively because of the unmeasurable problem of oil well that associated gas causes, solved low liquid measure and the inaccurate problem of producing well metering at intermittence effectively.
Well head crude oil output metering device provided by the invention; Detect the fuel gauging of oilfield internal wet crude when showing that three grades of regulations that its certainty of measurement reaches petroleum industry standard SY/T 0004-98 " the oilfield collection fail design specifications " are measured in practice, its metering precision should be ± 5% with interior requirement.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is that CPU of the present invention connects sketch map;
Wherein, 1-ball-and-seat, 2-strainer, 3-pressure difference transmitter, 4-flow transmitter, 5-atmospheric valve, 6-feed liquor siphunculus, 7-fluid siphunculus, 8-U type pipe.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done to describe in further detail, said is to explanation of the present invention rather than qualification.
Referring to Fig. 1; A kind of well head crude oil output metering device; Comprise the feed liquor siphunculus that is connected with U type pipe 86 and fluid siphunculus 7, feed liquor siphunculus 6 is provided with ball-and-seat 1 and strainer valve 2, is provided with first pressure difference transmitter 3 and second pressure difference transmitter 3 at the liquid feeding end of U type pipe 8; Outlet end at U type pipe is provided with flow transmitter 4, on fluid siphunculus 7, is provided with the 3rd pressure difference transmitter 3 and the 4th pressure difference transmitter 3;
The length of concrete U type pipe is respectively 600mm * 300mm * 1500mm, and the range of pressure difference transmitter is that 0Pa～5kPa, accuracy class are 1 ‰; The range of flow instrument flow transmitter is that 0mm～14m3/D, accuracy class are 5 ‰;
Referring to Fig. 2, first pressure difference transmitter and second pressure difference transmitter, the 3rd pressure difference transmitter and the 4th pressure difference transmitter, flow transmitter are transferred to CPU with detected signal, and CPU shows after calculating the crude oil output.
Described CPU also is transferred to remote display through connecting line with the crude oil output data and shows.
The bottom of concrete U type pipe 8 also is provided with atmospheric valve 5; Atmospheric valve 5 is installed in U type pipe bottom, so that at the greasy dirt of when maintenance emptying U type pipe.
Concrete described first pressure difference transmitter and second pressure difference transmitter are installed in the vertical pipeline section of U type pipe 8, form perpendicular differential pressure transmitter group; The 3rd pressure difference transmitter and the 4th pressure difference transmitter are installed on the horizontal pipeline section of fluid siphunculus, form horizontal pressure difference transmitter group;
And first pressure difference transmitter and second pressure difference transmitter distance L apart equal the 3rd pressure difference transmitter and the 4th pressure difference transmitter distance L apart; The vertical pipeline section of U type pipe and the cross sectional shape of the horizontal pipeline section of fluid siphunculus, size are all identical.
Said apparatus and the metering of carrying out well head crude oil after feed line is connected; When wet crude is that oil water mixture enters into strainer from oil well, after accomplishing impurity screening, get in the U type pipe body through pipeline; At first calculate oil-water mixture density; After calculating instant productivity, calculate cumulative production again, concrete well head crude oil output method of measurement is:
1) with ball-and-seat with after feed line is connected; After well head output crude oil filters through strainer; Enter in the U type pipe; First pressure difference transmitter and second pressure difference transmitter detect the pressure differential deltap P of the interior vertical section of U pipe at a distance of L, are transferred to CPU then, and the flow transmitter of U type pipe outlet end setting detects the volume V of crude oil in the current U type pipeline; The 3rd pressure difference transmitter on the fluid siphunculus and the 4th pressure difference transmitter detect the pressure differential deltap P ' of the horizontal siphunculus section of fluid siphunculus at a distance of L, are transferred to CPU then;
2) CPU calculates the density γ of crude oil according to γ=(Δ P-Δ P ')/L;
Calculate the instantaneous production fluid amount of oil well Q then
T=γ * V calculates the oil well cumulative liquid production Q=γ * V * Δ T in the Δ T time at last.
Well head crude oil output metering device provided by the invention; Realized that fluid produced by oil production well is in metering accurately continuously under press strip spare; Solve produced liquid in oil well effectively because of the unmeasurable problem of oil well that associated gas causes, solved low liquid measure and the inaccurate problem of producing well metering at intermittence effectively.
Claims (7)
1. well head crude oil output metering device; It is characterized in that; Comprise the feed liquor siphunculus and the fluid siphunculus that are connected with U type pipe, the feed liquor siphunculus is provided with ball-and-seat and strainer valve, is provided with first pressure difference transmitter and second pressure difference transmitter at the liquid feeding end of U type pipe; Outlet end at U type pipe is provided with flow transmitter, on the fluid siphunculus, is provided with the 3rd pressure difference transmitter and the 4th pressure difference transmitter;
First pressure difference transmitter and second pressure difference transmitter, the 3rd pressure difference transmitter and the 4th pressure difference transmitter, flow transmitter are transferred to CPU with detected signal, and CPU shows after calculating the crude oil output.
2. well head crude oil output metering device as claimed in claim 1; It is characterized in that; Described first pressure difference transmitter and second pressure difference transmitter are installed in the vertical pipeline section of U type pipe, and the 3rd pressure difference transmitter and the 4th pressure difference transmitter are installed on the horizontal pipeline section of fluid siphunculus.
3. according to claim 1 or claim 2 well head crude oil output metering device is characterized in that described first pressure difference transmitter and second pressure difference transmitter distance L apart equal the 3rd pressure difference transmitter and the 4th pressure difference transmitter distance L apart.
4. according to claim 1 or claim 2 well head crude oil output metering device is characterized in that, the vertical pipeline section of described U type pipe and the cross sectional shape of the horizontal pipeline section of fluid siphunculus, size are all identical.
5. well head crude oil output metering device as claimed in claim 1 is characterized in that the bottom of described U type pipe also is provided with atmospheric valve.
6. well head crude oil output metering device as claimed in claim 1 is characterized in that described CPU also is transferred to remote display through connecting line with the crude oil output data and shows.
7. a well head crude oil output method of measurement is characterized in that, may further comprise the steps:
1) with ball-and-seat with after feed line is connected; After well head output crude oil filters through strainer; Enter in the U type pipe; First pressure difference transmitter and second pressure difference transmitter detect the pressure differential deltap P of the interior vertical section of U pipe at a distance of L, are transferred to CPU then, and the flow transmitter of U type pipe outlet end setting detects the volume V of crude oil in the current U type pipeline; The 3rd pressure difference transmitter on the fluid siphunculus and the 4th pressure difference transmitter detect the pressure differential deltap P ' of the horizontal siphunculus section of fluid siphunculus at a distance of L, are transferred to CPU then;
2) CPU calculates the density γ of crude oil according to γ=(Δ P-Δ P ')/L;
Calculate the instantaneous production fluid amount of oil well Q then
T=γ * V calculates the oil well cumulative liquid production Q=γ * V * Δ T in the Δ T time at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100171097A CN102587885A (en) | 2012-01-19 | 2012-01-19 | Device and method for metering crude oil output of wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100171097A CN102587885A (en) | 2012-01-19 | 2012-01-19 | Device and method for metering crude oil output of wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102587885A true CN102587885A (en) | 2012-07-18 |
Family
ID=46477054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100171097A Pending CN102587885A (en) | 2012-01-19 | 2012-01-19 | Device and method for metering crude oil output of wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102587885A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989374A (en) * | 2015-06-26 | 2015-10-21 | 中国石油化工股份有限公司胜利油田分公司 | Device and method for metering rod pumped well liquid quantity on line on basis of differential pressure method |
| CN105222841A (en) * | 2014-06-13 | 2016-01-06 | 威海海和科技有限责任公司 | A kind of produced liquid in oil well measuring apparatus with bypass structure |
| CN108535457A (en) * | 2018-06-12 | 2018-09-14 | 南京玖茂自动化控制系统有限公司 | A kind of aqueous quantitative analysis system of sump oil peculiar to vessel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259657A (en) * | 1999-12-29 | 2000-07-12 | 西安交通大学 | measuring method of crude petroleum, natural gas and water multiphase flow and its measuring equipment |
| CN1632514A (en) * | 2004-12-30 | 2005-06-29 | 仇小琦 | Device for measuring density and constituent containing rate of mixed fluid |
| CN2788177Y (en) * | 2004-08-30 | 2006-06-14 | 仇小琦 | Parallel device for measuring mixed liquid flux density and constituent containing rate |
| CN2802497Y (en) * | 2004-08-30 | 2006-08-02 | 仇小琦 | Series investigating device for density and component containing rate of mixed fluid |
| CN101109655A (en) * | 2007-08-27 | 2008-01-23 | 西安开尔能源工程有限责任公司 | Gas-liquid diphasic volume meter |
| CN102323003A (en) * | 2011-10-14 | 2012-01-18 | 大连海洋大学 | High-accuracy automatic liquid pressure gauge |
| CN202483551U (en) * | 2012-01-19 | 2012-10-10 | 陕西星辰石油科技有限责任公司 | Wellhead crude oil output metering device |
-
2012
- 2012-01-19 CN CN2012100171097A patent/CN102587885A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259657A (en) * | 1999-12-29 | 2000-07-12 | 西安交通大学 | measuring method of crude petroleum, natural gas and water multiphase flow and its measuring equipment |
| CN2788177Y (en) * | 2004-08-30 | 2006-06-14 | 仇小琦 | Parallel device for measuring mixed liquid flux density and constituent containing rate |
| CN2802497Y (en) * | 2004-08-30 | 2006-08-02 | 仇小琦 | Series investigating device for density and component containing rate of mixed fluid |
| CN1632514A (en) * | 2004-12-30 | 2005-06-29 | 仇小琦 | Device for measuring density and constituent containing rate of mixed fluid |
| CN101109655A (en) * | 2007-08-27 | 2008-01-23 | 西安开尔能源工程有限责任公司 | Gas-liquid diphasic volume meter |
| CN102323003A (en) * | 2011-10-14 | 2012-01-18 | 大连海洋大学 | High-accuracy automatic liquid pressure gauge |
| CN202483551U (en) * | 2012-01-19 | 2012-10-10 | 陕西星辰石油科技有限责任公司 | Wellhead crude oil output metering device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222841A (en) * | 2014-06-13 | 2016-01-06 | 威海海和科技有限责任公司 | A kind of produced liquid in oil well measuring apparatus with bypass structure |
| CN104989374A (en) * | 2015-06-26 | 2015-10-21 | 中国石油化工股份有限公司胜利油田分公司 | Device and method for metering rod pumped well liquid quantity on line on basis of differential pressure method |
| CN108535457A (en) * | 2018-06-12 | 2018-09-14 | 南京玖茂自动化控制系统有限公司 | A kind of aqueous quantitative analysis system of sump oil peculiar to vessel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203271708U (en) | Skid-mounted oil-gas separation metering tester | |
| CN101260802A (en) | Oil, gas and water three phase oil well continuous metering device and its measurement method | |
| CN202486130U (en) | Water content measuring device for crude oil of wellhead | |
| CN102080531A (en) | Method for production metering of oil wells | |
| CN201635722U (en) | Single-well three-phase automatic metering device of oil field | |
| CN101666770A (en) | Device and method for measuring crude oil with low air void | |
| CN102587885A (en) | Device and method for metering crude oil output of wellhead | |
| CN203257407U (en) | Oil well mouth metering device | |
| CN103924961A (en) | Oil well oil-gas-water three-phase automatic metering system | |
| CN107246259A (en) | Tubular type oil well gas-liquid two-phase flow meter and its measuring method | |
| CN102749111A (en) | Wet gas flow measuring method and device | |
| CN202483551U (en) | Wellhead crude oil output metering device | |
| CN103245387A (en) | Small-liquid-amount gas-liquid two-phase oil well meter | |
| CN212508265U (en) | Online metering device of two tipping buckets | |
| CN105626034A (en) | Automatic metering device for oil well gas yield | |
| CN204344103U (en) | A kind of oil well gas production self-measuring device | |
| CN106869903B (en) | Metering device | |
| CN215492969U (en) | High-precision sand content tester | |
| CN206095334U (en) | Two -phase flow gauge automatic switching control equipment | |
| CN105865557A (en) | A super-high-viscosity gas-liquid two phase separation metering device | |
| CN204831423U (en) | Double -phase precise measurement device of profit | |
| CN201130177Y (en) | Double-differential pressure type water content meter | |
| CN201025024Y (en) | Oil well pressure differentiation measurement device | |
| CN210798947U (en) | Single-well crude oil three-phase flow metering device | |
| CN204085644U (en) | A kind of flow calibrating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |