CN102392632A - Non-separation measuring instrument for wellhead ternary fluid - Google Patents
Non-separation measuring instrument for wellhead ternary fluid Download PDFInfo
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- CN102392632A CN102392632A CN2011103238728A CN201110323872A CN102392632A CN 102392632 A CN102392632 A CN 102392632A CN 2011103238728 A CN2011103238728 A CN 2011103238728A CN 201110323872 A CN201110323872 A CN 201110323872A CN 102392632 A CN102392632 A CN 102392632A
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Abstract
The invention discloses a non-separation measuring instrument for wellhead ternary fluid, relating to the technical field of oil exploration and oil refining; the upper end and the lower end of the shell are respectively connected with an upper covering board and a lower covering board; a dividing part is disposed in the shell; the dividing part, the shell, the upper covering board and the lower covering board form a movable sealing chamber; the upper end of the movable sealing chamber is provided with a pressure sensor and a temperature sensor; the movable sealing chamber is connected with a connecting tube; the inner side wall of the shell is vertically provided with a straight slot having a T-shaped cross section; a rectangular float is disposed in the straight slot; the outer surface of the shell having the straight slot is provided with a sensor. The invention can be manufactured conveniently; the float cannot rotate and move in the T-shaped straight slot, which improves the sensing precision of the float; and the float can be maintained conveniently.
Description
Technical field
The present invention relates to oil exploitation and oil refinery technical field, particularly in the oil exploitation process, oil, natural gas and formation water be the on-line continuous detection measurement technology device of existence condition fluid-mixing down together.
Background technology
The measuring method of ternary in the existing oil exploitation process (oil, natural gas, formation water) fluid-mixing has two kinds:
1, gauging eliminator and manual sampling assay method: adopt the huge measuring system of a cover, separate again earlier and detect.Gauging eliminator through about 0.6 cubic metre of volume; After earlier the gas in the fluid-mixing, mixing material being separated; Measure tolerance more respectively and mix liquid measure, the method through sampling and measuring or chemical examination moisture content calculates the oil mass and the water yield in the mixing material at last.The complex structure of this measuring system, complex operation, accuracy of measurement lower (± 20 ∽ 35% approximately), the error amount that human factor causes is bigger, and application is relatively limited to (being only applicable to the level Four measuring station).
2, three phase separator and each individual event instrument (gas meter, oil meter, water meter) measurement Law: build the huge measuring system of a cover, adopt to separate again earlier and detect, or detect liquid phase component and gas phase component respectively with the r ray.This system engineering cost high (being generally 80～2,400,000 yuan); And application is relatively limited to (terminal or the central treating station that generally only are applicable to fluid-mixing); Its accuracy of measurement is respectively: crude oil ± 10%; Sewage ± 10%, natural gas ± 20% (be only applicable to CONDITIONS IN INELASTIC ELECTRON, can't reach generally speaking at all).And in the oil exploitation process, the starting end of the fluid-mixing of production wellhead under ground condition can not be suitable for this system at all.
For design a kind of simple in structure, easy and simple to handle, economical and practical, fluid-mixing does not separate, the measuring instrument of direct-on-line continuous detecting for ternary (oil, natural gas, formation water) that accuracy of measurement is high, the inventor has proposed new design in 2010.Promptly; Upper cover plate and lower cover that the fluid dispenser is tightly connected respectively at the housing upper/lower terminal; In housing, be provided with then and cut apart device, cut apart formation movable sealing chamber between device and housing, upper cover plate, the lower cover, pressure sensor and temperature pick up are set in the upper end in movable sealing chamber; And on the movable sealing chamber, connect pipe, differential pressure transmitter and liquid level sensor were set in communicating pipe.
Because the principle of above design is: calculate instantaneous tolerance value through Level Detection method meter; The gravimetric value of the instantaneous mixing material that records according to differential pressure transmitter again calculates the instantaneous density value of this mixed liquor, calculates the content and the value thereof of two media in the mixing material (formation water, oil) at last according to the difference sum formula.Just can obtain oil, natural gas, these three kinds of fluid-mixings of formation water total amount value separately after adding up respectively.The accuracy that is to say the liquid level that liquid level sensor transmits has determined the degree of accuracy of measuring.
And above communicating pipe purpose have two: one, be to connect weighing apparatus, another is for differential pressure transmitter is set, and liquid level sensor is the device that transmits the liquid level in the movable sealing chamber.Because usually communicating pipe is a round tube, liquid level sensor float therein such as can rotate at unsettled phenomenon, therefore, has directly influenced the degree of accuracy of the accurate measurement of liquid level.
Summary of the invention
The object of the invention is to design a kind of production wellhead ternary fluid that improves the transmission of liquid level precise information and is regardless of from measuring instrument.
Present invention resides in upper cover plate and lower cover that the housing upper/lower terminal is tightly connected respectively; In housing, be provided with and cut apart device; Cut apart and constitute the movable sealing chamber between device and housing, upper cover plate, the lower cover; In the upper end in movable sealing chamber pressure sensor and temperature pick up are set, and on the movable sealing chamber, connect pipe, be characterized in vertically offering the T-shaped straight trough in a cross section at the inside wall of said housing; The rectangle float is set in said straight trough, sensor is set at the external surface of the housing that said straight trough is set.
Straight trough of the present invention can once be processed when making housing, also can after cylindrical shell is shaped, adopt cutter to be processed into, the convenient making.Main is; The present invention directly is passed to sensor with liquid level signal with the float that is set directly at inner walls; And the profile of rectangle float more cooperates with the shape of T shape straight trough; It is movable effectively in answering surveyed area to help float, and float can not rotate, move about in T shape straight trough, can improve the accuracy of float sensing.The external surface that sensor is arranged on housing is convenient to carrying out of maintenance work.
Because housing is in the wall thickness attenuation at fluting place, in order to keep the required resistance to pressure of product, the present invention also housing outer surface between sensor and housing is provided with stiffener.The stiffener detachable is connected outside the housing, also can process one with housing.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is Fig. 1 middle shell and stiffener, the sensor profile in A-A portion.
The specific embodiment
Like Fig. 1, shown in 2; The present invention is provided with housing 1 at least; At the upper/lower terminal of housing 1 be tightly connected respectively upper cover plate 2 and lower cover 3, device 4 is cut apart in setting housing 1 in, cuts apart between device 4 and housing 1, upper cover plate 2, the lower cover 3 to be provided with the movable sealing chamber; On the movable sealing chamber, connect pipe 5, serial connection weight sensor 12 on communicating pipe 5.
Pressure sensor 6 and temperature pick up 7 are set respectively in the upper end in movable sealing chamber.
The inside wall of housing 1 is vertically offered the T-shaped straight trough in a cross section 8, and rectangle float 9 is set in straight trough 8, and the external surface stiffener 10 at the housing that said straight trough 8 is set 1 is provided with sensor 11 outside stiffener 10.
Claims (2)
1. production wellhead ternary fluid is regardless of from measuring instrument; Be included in upper cover plate and lower cover that the housing upper/lower terminal is tightly connected respectively; In housing, be provided with and cut apart device, cut apart formation movable sealing chamber between device and housing, upper cover plate, the lower cover, pressure sensor and temperature pick up are set in the upper end in movable sealing chamber; And on the movable sealing chamber, connect pipe; It is characterized in that: vertically offer the T-shaped straight trough in a cross section at the inside wall of said housing, the rectangle float is set in said straight trough, sensor is set at the external surface of the housing that said straight trough is set.
2. be regardless of from measuring instrument according to the said production wellhead ternary of claim 1 fluid, it is characterized in that: the housing outer surface between sensor and housing is provided with stiffener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103238728A CN102392632A (en) | 2011-10-24 | 2011-10-24 | Non-separation measuring instrument for wellhead ternary fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103238728A CN102392632A (en) | 2011-10-24 | 2011-10-24 | Non-separation measuring instrument for wellhead ternary fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102392632A true CN102392632A (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103238728A Pending CN102392632A (en) | 2011-10-24 | 2011-10-24 | Non-separation measuring instrument for wellhead ternary fluid |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2239615Y (en) * | 1995-05-11 | 1996-11-06 | 杨政 | Float drift tank gauge |
| US20040231415A1 (en) * | 2003-05-23 | 2004-11-25 | Hitachi Unisia Automotive, Ltd. | Fuel gauge |
| CN201138232Y (en) * | 2008-01-14 | 2008-10-22 | 张石法 | Oil level sensor of digital oil gauge |
| CN201152770Y (en) * | 2007-10-06 | 2008-11-19 | 陈际军 | Liquid level sensor |
| CN201606064U (en) * | 2010-03-11 | 2010-10-13 | 湖北创联石油科技有限公司 | Device for measuring oil-gas-water three phase mixture on line |
| CN101967971A (en) * | 2010-08-23 | 2011-02-09 | 陈东 | Ternary fluid non-separation on-line measurement instrument |
| CN201763314U (en) * | 2010-08-10 | 2011-03-16 | 淄博阿尔法电气有限公司 | Automatic liquid level metering device for oil well |
| CN202273670U (en) * | 2011-10-24 | 2012-06-13 | 陈东 | Ternary liquid non-separated measuring instrument for petroleum exploiting wellhead |
-
2011
- 2011-10-24 CN CN2011103238728A patent/CN102392632A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2239615Y (en) * | 1995-05-11 | 1996-11-06 | 杨政 | Float drift tank gauge |
| US20040231415A1 (en) * | 2003-05-23 | 2004-11-25 | Hitachi Unisia Automotive, Ltd. | Fuel gauge |
| CN201152770Y (en) * | 2007-10-06 | 2008-11-19 | 陈际军 | Liquid level sensor |
| CN201138232Y (en) * | 2008-01-14 | 2008-10-22 | 张石法 | Oil level sensor of digital oil gauge |
| CN201606064U (en) * | 2010-03-11 | 2010-10-13 | 湖北创联石油科技有限公司 | Device for measuring oil-gas-water three phase mixture on line |
| CN201763314U (en) * | 2010-08-10 | 2011-03-16 | 淄博阿尔法电气有限公司 | Automatic liquid level metering device for oil well |
| CN101967971A (en) * | 2010-08-23 | 2011-02-09 | 陈东 | Ternary fluid non-separation on-line measurement instrument |
| CN202273670U (en) * | 2011-10-24 | 2012-06-13 | 陈东 | Ternary liquid non-separated measuring instrument for petroleum exploiting wellhead |
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Application publication date: 20120328 |