CN116464428A - Skid-mounted piston type continuous single-well crude oil metering device - Google Patents
Skid-mounted piston type continuous single-well crude oil metering device Download PDFInfo
- Publication number
- CN116464428A CN116464428A CN202310526856.1A CN202310526856A CN116464428A CN 116464428 A CN116464428 A CN 116464428A CN 202310526856 A CN202310526856 A CN 202310526856A CN 116464428 A CN116464428 A CN 116464428A
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- Prior art keywords
- oil
- weighing
- skid
- pipeline
- metering device
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- 239000010779 crude oil Substances 0.000 title claims abstract description 30
- 238000005303 weighing Methods 0.000 claims abstract description 97
- 239000003921 oil Substances 0.000 claims abstract description 89
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 16
- 238000005086 pumping Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 101100356682 Caenorhabditis elegans rho-1 gene Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The invention belongs to the technical field of single-well crude oil, in particular to a skid-mounted piston type continuous single-well crude oil metering device which comprises a skid-mounted base and a PLC, wherein an oil discharge pipeline, an oil inlet pipeline and a weighing assembly are arranged on the skid-mounted base; according to the invention, the three-way valve A and the weighing cylinder A are arranged in the skid-mounted piston type continuous single-well crude oil metering device, oil is fed from the oil inlet of the oil pumping unit for measurement during working, and is directly fed back to the oil pipeline of the well site after the measurement is finished, so that the normal operation of a single well is not affected, and the working efficiency of the single well is improved.
Description
Technical Field
The invention relates to the technical field of single-well crude oil, in particular to a skid-mounted piston type continuous single-well crude oil metering device.
Background
Accurate measurement of daily yield of single well crude oil is always a common problem in various large oil fields; the difficulty of metering is embodied in the following aspects:
the volume/weight measurement, namely continuous one-side-in-side-out measurement, must be carried out on the premise of not affecting the normal operation of the pumping unit;
the single well produced liquid is not pure oil or water, but an oil-water three-phase (or four-phase) mixture containing a small amount of gas and sand, and the composition ratio of the oil-water three-phase (or four-phase) mixture is changed at any time. Namely, heterogeneous medium measurement, and crude oil is very viscous;
most commonly used flowmeters at present are volumetric flowmeters (such as electromagnetic flowmeters, vortex shedding flowmeters, rotameters and roots flowmeters), and basically cannot work normally when the gas content and the sand content in the mixed liquid are too high; when the oil field output is counted by using the tipping bucket oil tank, crude oil is filled inside and outside the tipping bucket, the volume of the tipping bucket is reduced, the measurement accuracy is affected, the normal production of a single well is affected by using a vehicle-mounted weighing tank car, the wellhead flow is switched, the emptying flow of the crude oil in the tank after weighing is completed is troublesome, and the measurement of the single well crude oil is very troublesome.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a skid-mounted piston type continuous single-well crude oil metering device, which solves the problem that the statistics and metering of single-well crude oil yield are very troublesome at present.
(II) technical scheme
The invention adopts the following technical scheme for realizing the purposes:
the utility model provides a sled dress piston continuous single well crude oil metering device, includes sled dress base, PLC, be provided with oil drain pipeline, oil feed pipeline and weighing module on the sled dress base, sled dress base is located and is provided with weighing cylinder A on the weighing module, the junction between weighing cylinder A one end port, oil drain pipeline and the oil feed pipeline three is provided with three way valve A, the intracavity sliding connection of the weighing cylinder A other end has the piston rod, weighing cylinder A is located and is provided with the grating chi on the piston rod.
Further, the skid-mounted base is provided with a weighing cylinder B on the weighing assembly, and a three-way valve B is arranged at the joint between the port of the weighing cylinder B and the oil discharge pipeline and between the port of the weighing cylinder B and the oil inlet pipeline, and the three-way valve B and the three-way valve A are mutually matched.
Further, the weighing assembly comprises a level gauge and at least four high-precision weighing sensors, the level gauge is arranged on the skid-mounted base through a support, an X sliding rail and a Y sliding rail which are arranged in a mutually perpendicular and crossed mode are arranged on the level gauge, at least two adjustable rods are arranged on the weighing cylinder A and the weighing cylinder B, the high-precision weighing sensors are arranged on the adjustable rods, rotatable hanging rings are arranged on the high-precision weighing sensors, and the rotatable hanging rings are arranged on the X sliding rails.
Further, an oil inlet valve is arranged at the port of the oil inlet pipeline, an oil outlet valve is arranged at the port of the oil outlet pipeline, and a manual bypass valve and an automatic bypass valve are arranged between the oil inlet pipeline and the oil outlet pipeline.
Further, an oil inlet pressure sensor is arranged on the oil inlet pipeline, and an oil outlet pressure sensor is arranged on the oil outlet pipeline.
Further, the PLC comprises an explosion-proof electric control box and a touch display screen, wherein the touch display screen is arranged on the explosion-proof electric control box, and the explosion-proof electric control box is arranged on the skid-mounted base.
Further, the weighing cylinder A and the weighing cylinder B are positioned on the grating scales corresponding to the weighing cylinder A and the weighing cylinder B respectively and are provided with grating scale protection covers.
Further, the ends of the weighing cylinder A and the weighing cylinder B are respectively provided with a hose, and the movable ends of the two hoses are respectively in through connection with the three-way valve A and the three-way valve B through the arranged ball joints.
(III) beneficial effects
Compared with the prior art, the invention provides the skid-mounted piston type continuous single-well crude oil metering device, which has the following beneficial effects:
1. according to the invention, the three-way valve A and the weighing cylinder A are arranged in the skid-mounted piston type continuous single-well crude oil metering device, oil is fed from the oil inlet of the oil pumping unit for measurement during working, and is directly fed back to the oil pipeline of the well site after the measurement is finished, so that the normal operation of a single well is not affected, and the working efficiency of the single well is improved.
2. The invention has the advantages that the length of the whole equipment base is controlled to be 1.7 m or 1 m, and the equipment base is suitable for being arranged on a small-sized vehicle, so that the equipment base is not convenient for working at a well site, and is convenient for transportation and storage, thereby effectively improving the use convenience of the skid-mounted piston type continuous single-well crude oil metering device.
3. The oil quantity of the invention adopts a suspension weighing type metering mode, and various technical means are added to eliminate adverse effects of the outside on the measurement precision, so that the metering precision is controlled below 0.2 percent F.S, which is far higher than that of the traditional metering mode, and the weighing precision of the skid-mounted piston type continuous single-well crude oil metering device can be effectively improved.
Drawings
FIG. 1 is a front perspective view of the whole of the present invention;
fig. 2 is a side perspective view of the entire present invention.
In the figure: 1, skid-mounting a base; 2, an oil outlet valve; 3, a manual bypass valve; 4, an oil inlet valve; 5, a three-way valve VB;6, a three-way valve VA;7, ball joint; 8, a hose; 9, X slide rails; 10, a Y slide rail; 11, a rotatable hanging ring; 12, a high-precision weighing sensor; 13, an adjustable boom; 14, weighing cylinder A;15, a piston rod; 16, grating ruler; 17, a grating ruler protecting sleeve cover; 18, weighing cylinder B;19, an explosion-proof electric cabinet; 20, touching the display screen; 21, an automatic bypass valve; 22, an oil inlet pressure sensor; 23, an oil pressure sensor is arranged.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings, in which it is evident that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
As shown in fig. 1 to 2, the skid-mounted piston type continuous single-well crude oil metering device provided by one embodiment of the invention comprises a skid-mounted base 1 and a PLC, wherein an oil discharge pipeline, an oil inlet pipeline and a weighing assembly are arranged on the skid-mounted base 1, a weighing cylinder A14 is arranged on the weighing assembly, a three-way valve A6 is arranged at the joint of one end port of the weighing cylinder A14, the oil discharge pipeline and the oil inlet pipeline, a piston rod 15 is connected in an oil cavity at the other end of the weighing cylinder A14 in a sliding manner, and a grating ruler 16 is arranged on the piston rod 15 of the weighing cylinder A14;
before the equipment formally works, the self-checking device needs to reset and self-check whether all parts are normal or not. After the start of metering: the PLC reads the static empty weight M0 of the weighing cylinder A14, then the three-way valve A6 is communicated with an oil inlet pipeline to feed oil, the oil enters the weighing cylinder A14 through the ball joint 7 and the hose 8, and pushes the piston rod 15 of the weighing cylinder A14 to extend rightwards to a set distance, the three-way valve A6 cuts off the oil inlet pipeline, and after the reading of the grating ruler 16 is unchanged (or after 2 seconds of delay), the weight M1 of the weighing cylinder A14 is read, and the initial weight M0 is subtracted to obtain the current oil weight MA1; after weighing, the three-way valve A6 is connected with an oil discharge pipeline, the piston of the weighing cylinder A14 moves leftwards under the pushing of high-pressure gas to discharge oil until returning to a starting point, and then the weight of the weighing cylinder A14 is read and used as the initial empty weight (possibly different each time) of the next cycle, so that the oil feeding and discharging weighing process of a single cylinder is completed;
in the equipment similar to the weighing cylinder A14, as the piston is provided with the guide rod, the area of the piston is larger and the thickness of the piston is thinner, under the unbalanced impact force of oil inlet, the piston is easy to clamp due to the fact that the piston is overturned, the probability of clamping is greatly reduced due to the design of the piston with the rod, and even if the special extreme case is clamped, the piston rod 15 can be released in a mode of pulling the piston rod outside without disassembling the equipment, so that the equipment is convenient for field use;
the water content of crude oil is an important index to be measured in petroleum production, but various currently used instruments have larger errors, and the method can accurately calculate the content value of water by measuring the moving distance S of a piston and then utilizing the known inner diameter D of a cylinder, the density rho 0 of water and the density rho 1 of crude oil to measure the weight M of liquid in the cylinder as long as the measured value of the weight M is accurate enough;
three-way valve A6 and three-way valve B5 all have three stations through rotatory: oil inlet level; a middle closed position; the middle stop position is adjusted through the proximity switch; thereby realizing accurate control of the system
As shown in fig. 1, in some embodiments, a weighing cylinder B18 is arranged on the weighing assembly of the skid-mounted base 1, a three-way valve B5 is arranged at the connection part between the port of the weighing cylinder B18 and the oil discharge pipeline as well as the oil inlet pipeline, and the three-way valve B5 and the three-way valve A6 are mutually matched;
in order to ensure that the continuous operation of the oil pumping unit is not influenced, two weighing cylinders are arranged, when the three-way valve A6 of the weighing cylinder A14 cuts off an oil inlet pipeline, the three-way valve B5 of the weighing cylinder B18 is communicated with the oil inlet pipeline to feed oil, and the whole process is the same as the weighing cylinder A14, so that the purpose of continuous measurement operation is realized.
As shown in fig. 1, in some embodiments, the weighing assembly includes a level and at least four high-precision weighing sensors 12, the level is arranged on the skid-mounted base 1 through a bracket, an X sliding rail 9 and a Y sliding rail 10 which are mutually perpendicular and crossed are arranged on the level, at least two adjustable rods 13 are arranged on each of a weighing cylinder a14 and a weighing cylinder B18, the high-precision weighing sensors 12 are arranged on the adjustable rods 13, rotatable hanging rings 11 are arranged on the high-precision weighing sensors 12, and the rotatable hanging rings 11 are arranged on the X sliding rails 9;
in order to ensure the measurement accuracy, the device adopts a mode of suspending the measuring cylinder (the measurement accuracy of the mode is far better than that of a tray weighing method in practice), the system is adjusted to be approximately horizontal by using a level meter and an adjustable rod 13 which are arranged before weighing, meanwhile, a high-accuracy weighing sensor 12 and the cylinder are designed to be in a freely movable cantilever state and are positioned on an X/Y linear bearing adjusting track, if uneven or inclined exists, the whole weighing cylinder can automatically slide to a balance point under the action of gravity, and the full vertical weighing is accurately ensured, so that the measurement accuracy is ensured.
As shown in fig. 1, in some embodiments, the port of the oil inlet pipe is provided with an oil inlet valve 4, the port of the oil outlet pipe is provided with an oil outlet valve 2, and a manual bypass valve 3 and an automatic bypass valve 21 are provided between the oil inlet pipe and the oil outlet pipe.
As shown in fig. 1, in some embodiments, an oil inlet pressure sensor 22 is provided on the oil inlet pipe, and an oil outlet pressure sensor 23 is provided on the oil outlet pipe.
As shown in fig. 1, in some embodiments, the PLC includes an explosion-proof electric cabinet 19 and a touch display screen 20, the touch display screen 20 is disposed on the explosion-proof electric cabinet 19, and the explosion-proof electric cabinet 19 is disposed on the skid base 1.
As shown in fig. 1, in some embodiments, both weighing cylinders a14 and B18 are provided with a grating scale protective cover 17 on their respective grating scales 16.
As shown in fig. 1, in some embodiments, the ends of the weighing cylinder a14 and the weighing cylinder B18 are respectively provided with a hose 8, and the movable ends of the two hoses 8 are respectively connected with the three-way valve A6 and the three-way valve B5 in a penetrating way through the arranged ball joints 7;
even though the oil inlet pipe adopts the mode of connecting the hose 8, because the existence of wellhead pressure can also lead to the hardening of the hose 8, and the weighing cylinder is connected into a whole, in this case, any additional force generated by unbalance can bring about interference by weighing, and the only place which can bring about adverse effect by weighing is minimized by the combination mode of +90% position liquid inlet depressurization of the hose 8+stainless steel ball joint 7 (after leveling, the effect of 100g is only measured in the most adverse state, and compared with the value of 56Kg of total weight after filling, the error is only 0.17%, and the effect is extremely small).
Because the instantaneous displacement of each different well is different, the same quantity of cylinders can not be guaranteed to be installed each time, the same weight of the weighing cylinders can not be guaranteed to be completely discharged each time without residues, the time T from starting oil feeding to ending oil feeding of the weighing cylinders is counted, and meanwhile, the reading value of the cylinders when oil feeding is started is subtracted from the reading value of the high-precision weighing sensor when oil feeding is ended, so that the weight of single well production liquid in the current metering time T is obtained. The weight values of a plurality of metering times are accumulated and calculated to obtain a single well yield value calculated in hours or days, and the measurement error caused by factors such as zero drift of the high-precision weighing sensor 12, incomplete emptying of the weighing cylinder and the like is avoided by the differential weighing, so that the method is extremely accurate.
Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that the present invention is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a sled dress piston continuous single well crude oil metering device, includes sled dress base (1) and PLC, be provided with oil drain pipeline, oil feed pipeline and weighing module on sled dress base (1), its characterized in that: the skid-mounted base (1) is located on the weighing assembly and is provided with a weighing cylinder A (14), a three-way valve A (6) is arranged at the joint of one end port of the weighing cylinder A (14), an oil discharge pipeline and an oil inlet pipeline, a piston rod (15) is connected in an oil cavity at the other end of the weighing cylinder A (14) in a sliding mode, and a grating ruler (16) is arranged on the piston rod (15) of the weighing cylinder A (14).
2. The skid-mounted piston type continuous single-well crude oil metering device according to claim 1, wherein: the skid-mounted base (1) is located on the weighing assembly and is provided with a weighing cylinder B (18), a three-way valve B (5) is arranged at the joint between a port of the weighing cylinder B (18) and an oil discharge pipeline and between an oil inlet pipeline and the port of the weighing cylinder B and the oil discharge pipeline, and the three-way valve B (5) and the three-way valve A (6) are mutually matched.
3. The skid-mounted piston type continuous single-well crude oil metering device according to claim 2, wherein: the weighing assembly comprises a level gauge and at least four high-precision weighing sensors (12), wherein the level gauge is arranged on a skid-mounted base (1) through a support, an X sliding rail (9) and a Y sliding rail (10) which are arranged in a mutually perpendicular and crossed mode are arranged on the level gauge, at least two adjustable rods (13) are arranged on a weighing cylinder A (14) and a weighing cylinder B (18), the high-precision weighing sensors (12) are arranged on the adjustable rods (13), rotatable hanging rings (11) are arranged on the high-precision weighing sensors (12), and the rotatable hanging rings (11) are arranged on the X sliding rails (9).
4. The skid-mounted piston type continuous single-well crude oil metering device according to claim 1, wherein: an oil inlet valve (4) is arranged at the port of the oil inlet pipeline, an oil outlet valve (2) is arranged at the port of the oil outlet pipeline, and a manual bypass valve (3) and an automatic bypass valve (21) are arranged between the oil inlet pipeline and the oil outlet pipeline.
5. The skid-mounted piston type continuous single-well crude oil metering device according to claim 1, wherein: an oil inlet pressure sensor (22) is arranged on the oil inlet pipeline, and an oil outlet pressure sensor (23) is arranged on the oil outlet pipeline.
6. The skid-mounted piston type continuous single-well crude oil metering device according to claim 1, wherein: the PLC comprises an explosion-proof electric control box (19) and a touch display screen (20), wherein the touch display screen (20) is arranged on the explosion-proof electric control box (19), and the explosion-proof electric control box (19) is arranged on the skid-mounted base (1).
7. The skid-mounted piston type continuous single-well crude oil metering device according to claim 2, wherein: and the weighing cylinder A (14) and the weighing cylinder B (18) are positioned on the grating ruler (16) corresponding to each other, and a grating ruler protection sleeve cover (17) is arranged on each grating ruler.
8. The skid-mounted piston type continuous single-well crude oil metering device according to claim 2, wherein: the ends of the weighing cylinder A (14) and the weighing cylinder B (18) are respectively provided with a hose (8), and the movable ends of the two hoses (8) are respectively connected with the three-way valve A (6) and the three-way valve B (5) in a penetrating way through the arranged ball joints (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310526856.1A CN116464428B (en) | 2023-05-08 | 2023-05-08 | Skid-mounted piston type continuous single-well crude oil metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310526856.1A CN116464428B (en) | 2023-05-08 | 2023-05-08 | Skid-mounted piston type continuous single-well crude oil metering device |
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| Publication Number | Publication Date |
|---|---|
| CN116464428A true CN116464428A (en) | 2023-07-21 |
| CN116464428B CN116464428B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310526856.1A Active CN116464428B (en) | 2023-05-08 | 2023-05-08 | Skid-mounted piston type continuous single-well crude oil metering device |
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| Publication number | Publication date |
|---|---|
| CN116464428B (en) | 2023-11-03 |
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