CN102877832B - A kind of measuring method of well fluid level and system - Google Patents
A kind of measuring method of well fluid level and system Download PDFInfo
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- CN102877832B CN102877832B CN201210342573.3A CN201210342573A CN102877832B CN 102877832 B CN102877832 B CN 102877832B CN 201210342573 A CN201210342573 A CN 201210342573A CN 102877832 B CN102877832 B CN 102877832B
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Abstract
The embodiment of the present invention provides a kind of measuring method and system of well fluid level, adopt by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather and obtain load and time graph, and displacement and time graph; Utilize described load and time graph, and displacement and time graph, obtain polished rod indicator card; Described polished rod indicator card according to obtaining obtains pump dynagraoph; Described pump dynagraoph is utilized to obtain the technological means of the degree of depth of well fluid level, so reach following technique effect: provide one and realize at lower cost and real-time, the continuous monitoring scheme of effective producing fluid level, change the working method of manually carrying out the test of machine-pumped oil well producing fluid level to scene, solve the execute-in-place cycle long, labour intensity is large, the problem that instantaneous test value is representative not strong, reaches the target of Real-time Obtaining producing fluid level, coordination supply and discharge relation, raising oil well production efficiency at lower cost.
Description
Technical field
The present invention relates to oil extraction in oil field technical field, particularly relate to a kind of measuring method and system of well fluid level.
Background technology
Well fluid level data have directly reacted feed flow situation and the down-hole supply and discharge relation on stratum, are the important evidence of carrying out oil production technology Adaptability Evaluation and optimization.The device category of current producing fluid level test is more, and wherein modal have:
Echometer, by sound bullet type, nitrogen type wellhead connector and comprehensive tester composition, this equipment mainly utilizes echo principle to detect liquid level, and need artificial upper well to test by mouth well, workload is large, poor in timeliness, and there is potential safety hazard.
Well head tester, identical with echometer operating principle, advantage is directly to install well head, utilizes collection casing gas to test as sounding energy source, and utilizes wireless communication apparatus that result is uploaded to network.Can realize to producing fluid level automatic, real-time, monitor continuously, shortcoming is that well site needs increase equipment, and cost is high, is unfavorable for large-scale promotion application.
Optical fiber downhole testing producing fluid level, the method is the most direct, under test at present, apparatus expensive.
Realizing in process of the present invention, inventor finds that in prior art, at least there are the following problems: lack one at present and realize at lower cost and real-time, the continuous monitoring scheme of effective producing fluid level.
Summary of the invention
The embodiment of the present invention provides a kind of measuring method and system of well fluid level, one can be provided to realize at lower cost and real-time, the continuous monitoring scheme of effective producing fluid level.
On the one hand, embodiments provide a kind of measuring method of well fluid level, the measuring method of described well fluid level comprises:
By being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement being measured, gathering and obtaining load and time graph, and displacement and time graph;
Utilize described load and time graph, and displacement and time graph, obtain polished rod indicator card;
Described polished rod indicator card according to obtaining obtains pump dynagraoph;
Described pump dynagraoph is utilized to obtain the degree of depth of well fluid level;
The described degree of depth utilizing described pump dynagraoph to obtain well fluid level, comprising:
Described pump dynagraoph is utilized to set up producing fluid level computational mathematics model, to obtain the degree of depth of well fluid level;
Describedly utilize described pump dynagraoph to set up producing fluid level computational mathematics model, to obtain the degree of depth of well fluid level, comprising:
Using pump intake pressure as node, set up a stroke internal fixtion valve, the balance model acted on plunger opened by travelling valve, fill in row force analysis with coupled columns and obtain the first pump intake pressure, then described first pump intake pressure and the second pump intake pressure obtained that distributed by oil jacket annular pressure are compared, to ask for the degree of depth of well fluid level;
Fluid level depth of oil well design formulas is:
L
ffor dynamic oil level, m; F
ufor moment pump load opened by standing valve, N; F
dfor moment pump load opened by travelling valve, N; F is the frictional force between plunger and pump barrel, N; △ p
1for travelling valve Pressure Drop, Pa; △ p
2for standing valve Pressure Drop, Pa; p
dfor the pressure at producing fluid level place, Pa; P
hfor wellhead back pressure, Pa; f
pfor plunger sectional area; ρ
lfor fluid density in oil pipe;
Wherein, P
maxfor oil pumper peak load, N; P
minfor oil pumper minimum load, N; p
barfor sucker rod gravity in atmosphere, N; p
liquidfor the gravity of fluid column in ram area, N, s are stroke, m; N is jig frequency, 1/min; L
pfor pump setting depth, m.
Optionally, in an embodiment of the present invention, described by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather and obtain load and time graph, with displacement and time graph, comprise: by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather load and time graph, after displacement and time graph, image data is reached well head collector by cable, well site host remote terminal control system RTU is uploaded to again by well head collector, again by well group antenna, image data is reached main website receive centre antenna with the form of ripple.
Optionally, in an embodiment of the present invention, described utilize described pump dynagraoph obtain well fluid level the degree of depth after, the measuring method of described well fluid level also comprises: based on client/server configuration, browser/server structure is auxiliary, design and set up system network architecture, to issue the degree of depth of described well fluid level in units of oil recovery factory.
On the other hand, embodiments provide a kind of measuring system of well fluid level, the measuring system of described well fluid level comprises:
Data acquisition unit, for by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, measures pumping rod of well pumping unit load and displacement, gathers and obtains load and time graph, and displacement and time graph;
Data processing equipment, for utilizing described load and time graph, and displacement and time graph, obtain polished rod indicator card; Described polished rod indicator card according to obtaining obtains pump dynagraoph; Described pump dynagraoph is utilized to obtain the degree of depth of well fluid level;
Described data processing equipment, specifically for utilizing described pump dynagraoph to set up producing fluid level computational mathematics model, to obtain the degree of depth of well fluid level;
Described data processing equipment, further specifically for using pump intake pressure as node, set up a stroke internal fixtion valve, the balance model acted on plunger opened by travelling valve, fill in row force analysis with coupled columns and obtain the first pump intake pressure, then described first pump intake pressure and the second pump intake pressure obtained that distributed by oil jacket annular pressure are compared, to ask for the degree of depth of well fluid level;
Fluid level depth of oil well design formulas is:
L
ffor dynamic oil level, m; F
ufor moment pump load opened by standing valve, N; F
dfor moment pump load opened by travelling valve, N; F is the frictional force between plunger and pump barrel, N; △ p
1for travelling valve Pressure Drop, Pa; △ p
2for standing valve Pressure Drop, Pa; p
dfor the pressure at producing fluid level place, Pa; P
hfor wellhead back pressure, Pa; f
pfor plunger sectional area; ρ
lfor fluid density in oil pipe;
Wherein, P
maxfor oil pumper peak load, N; P
minfor oil pumper minimum load, N; p
barfor sucker rod gravity in atmosphere, N; p
liquid---the gravity of fluid column in ram area, N, s are stroke, m; N is jig frequency, 1/min; L
pfor pump setting depth, m.
Optionally, in an embodiment of the present invention, described data acquisition unit, by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather load and time graph, after displacement and time graph, image data is reached well head collector by cable, well site host remote terminal control system RTU is uploaded to again by well head collector, again by well group antenna, image data is reached main website receive centre antenna with the form of ripple, so that data processing equipment receives.
Optionally, in an embodiment of the present invention, the measuring system of described well fluid level also comprises: result distributing device, after described data processing equipment utilizes described pump dynagraoph to obtain the degree of depth of well fluid level, for based on client/server configuration, browser/server structure is auxiliary, design and set up system network architecture, to issue the degree of depth of described well fluid level in units of oil recovery factory.
Technique scheme has following beneficial effect: because adopt by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather and obtain load and time graph, and displacement and time graph; Utilize described load and time graph, and displacement and time graph, obtain polished rod indicator card; Described polished rod indicator card according to obtaining obtains pump dynagraoph; Described pump dynagraoph is utilized to obtain the technological means of the degree of depth of well fluid level, so reach following technique effect: provide one and realize at lower cost and real-time, the continuous monitoring scheme of effective producing fluid level, change the working method of manually carrying out the test of machine-pumped oil well producing fluid level to scene, solve the execute-in-place cycle long, labour intensity is large, the problem that instantaneous test value is representative not strong, reaches the target of Real-time Obtaining producing fluid level, coordination supply and discharge relation, raising oil well production efficiency at lower cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the measuring method flow chart of a kind of well fluid level of the embodiment of the present invention;
Fig. 2 is the measuring system composition structural representation embodiments providing a kind of well fluid level;
Fig. 3 is the measuring system composition structural representation of the another kind of well fluid level of the embodiment of the present invention;
Fig. 4 is the stressed schematic diagram of oil well pump in application example pit shaft of the present invention;
Fig. 5 is application example of the present invention load-time graph schematic diagram;
Fig. 6 is application example displacement-time curve schematic diagram of the present invention;
Fig. 7 is application example pump dynagraoph schematic diagram of the present invention;
Fig. 8 is that application example whole day of the present invention amounts to 144 pump dynagraoph schematic diagrames;
Fig. 9 is application example well fluid level whole day calculated curve schematic diagram of the present invention;
Figure 10 calculates producing fluid level statistics block diagram under the various operating mode of application example oil well of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, be the measuring method flow chart of a kind of well fluid level of the embodiment of the present invention, the measuring method of described well fluid level comprises:
101, by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement being measured, gathering and obtaining load and time graph, and displacement and time graph;
102, described load and time graph is utilized, and displacement and time graph, obtain polished rod indicator card;
103, pump dynagraoph is obtained according to the described polished rod indicator card obtained;
104, described pump dynagraoph is utilized to obtain the degree of depth of well fluid level.
Optionally, described by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather and obtain load and time graph, with displacement and time graph, comprise: by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather load and time graph, after displacement and time graph, image data is reached well head collector by cable, well site host remote terminal control system RTU is uploaded to again by well head collector, again by well group antenna, image data is reached main website receive centre antenna with the form of ripple.
Optionally, described utilize described pump dynagraoph obtain well fluid level the degree of depth after, the measuring method of described well fluid level also comprises: based on client/server configuration, browser/server structure is auxiliary, design and set up system network architecture, to issue the degree of depth of described well fluid level in units of oil recovery factory.
Optionally, the described degree of depth utilizing described pump dynagraoph to obtain well fluid level, comprising: utilize described pump dynagraoph to set up producing fluid level computational mathematics model, to obtain the degree of depth of well fluid level.
Further, optionally, describedly described pump dynagraoph is utilized to set up producing fluid level computational mathematics model, to obtain the degree of depth of well fluid level, comprise: using pump intake pressure as node, set up a stroke internal fixtion valve, the balance model acted on plunger opened by travelling valve, fill in row force analysis with coupled columns and obtain the first pump intake pressure, then described first pump intake pressure and the second pump intake pressure obtained that distributed by oil jacket annular pressure are compared, to ask for the degree of depth of well fluid level.
As shown in Figure 2, for embodiments providing a kind of measuring system composition structural representation of well fluid level, the measuring system of described well fluid level comprises:
Data acquisition unit 21, for by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gathers and obtain load and time graph, and displacement and time graph;
Data processing equipment 22, for utilizing described load and time graph, and displacement and time graph, obtain polished rod indicator card; Described polished rod indicator card according to obtaining obtains pump dynagraoph; Described pump dynagraoph is utilized to obtain the degree of depth of well fluid level.
Optionally, described data acquisition unit 21, by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather load and time graph, after displacement and time graph, image data is reached well head collector by cable, well site host remote terminal control system RTU is uploaded to again by well head collector, again by well group antenna, image data is reached main website receive centre antenna with the form of ripple, so that data processing equipment 22 receives.
Optionally, as shown in Figure 3, for the measuring system composition structural representation of the another kind of well fluid level of the embodiment of the present invention, the measuring system of described well fluid level is except comprising: except data acquisition unit 21 and data processing equipment 22, also comprise: result distributing device 23, after described data processing equipment 22 utilizes described pump dynagraoph to obtain the degree of depth of well fluid level, for based on client/server configuration, browser/server structure is auxiliary, design and set up system network architecture, to issue the degree of depth of described well fluid level in units of oil recovery factory.
Optionally, described data processing equipment 22, specifically for utilizing described pump dynagraoph to set up producing fluid level computational mathematics model, to obtain the degree of depth of well fluid level.Further, optionally, described data processing equipment 22, further specifically for using pump intake pressure as node, set up a stroke internal fixtion valve, the balance model acted on plunger opened by travelling valve, fill in row force analysis with coupled columns and obtain the first pump intake pressure, then described first pump intake pressure and the second pump intake pressure obtained that distributed by oil jacket annular pressure are compared, to ask for the degree of depth of well fluid level.
Embodiment of the present invention said method or system solution have following beneficial effect: because adopt by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather and obtain load and time graph, and displacement and time graph; Utilize described load and time graph, and displacement and time graph, obtain polished rod indicator card; Described polished rod indicator card according to obtaining obtains pump dynagraoph; Described pump dynagraoph is utilized to obtain the technological means of the degree of depth of well fluid level, so reach following technique effect: provide one and realize at lower cost and real-time, the continuous monitoring scheme of effective producing fluid level, change the working method of manually carrying out the test of machine-pumped oil well producing fluid level to scene, solve the execute-in-place cycle long, labour intensity is large, the problem that instantaneous test value is representative not strong, reaches the target of Real-time Obtaining producing fluid level, coordination supply and discharge relation, raising oil well production efficiency at lower cost.
Below lift application example to be described in detail:
The measuring system that application example pump dynagraoph method of the present invention calculates well fluid level is made up of three parts: data acquisition unit, data processing equipment and result distributing device:
Data acquisition unit: by the load transducer be arranged on well head polished rod eye, be arranged on the composition such as displacement transducer, well head collector, well site host RTU (RemoteTerminalUnit, remote terminal control system), well group antenna below walking beam on pumping units.The instantaneous polished rod load of synchronous acquisition rod-pumped well, displacement parameter;
Data processing equipment: the platform each data acquisition unit being carried out to information exchange, analyzing and processing.Generally be arranged on petroleum transferring station or multi-purpose station.The compositions such as producing fluid level software are calculated primarily of center antenna, master controller (data processor, telecommunication module, wireless server etc.), computer, merit figure;
Result distributing device: receive the result of calculation and oil well basic data uploaded from data processing equipment, be made up of database server, apps server, Web server, be responsible for the storage of all well datas in units of oil recovery factory, info web is issued.
Specific implementation process is as follows:
1. by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam, pumping rod of well pumping unit load and displacement being measured, gathering load and time, displacement and time graph, seeing shown in Fig. 5, Fig. 6.
2. load and the displacement signal of telecommunication reach well head collector by cable, and each well data is uploaded to well site host RTU by well head collector again, then by well group antenna, image data are reached main website receive centre antenna with the form of ripple and carries out data receiver.
3. by the master controller of data processing equipment, the signal received is converted to data signal and reaches computer in station.Set up based on client/server configuration, browser/server structure is auxiliaryly devise system network architecture, in website, computer is installed merit figure and is calculated producing fluid level software, solves producing fluid level.
4. result distributing device is arranged on each oil recovery factory, is made up of database server, apps server, Web server.Receiving the result of calculation and oil well basic data uploaded from data processing equipment, is that unit stores all data, info web is issued with oil recovery factory.
Pump dynagraoph calculates producing fluid level method: first, utilize described sucker rod load and the Changing Pattern of displacement and time to obtain polished rod indicator card.Secondly, turned by polished rod indicator card and solve pump dynagraoph, first set up sucker rod, oil pipe FEM (finite element) model and fluid column Difference Calculation model, then iterative goes out deep-well pumping hole place's load and the graph of a relation of sucker rod load and displacement and time, namely obtains pump dynagraoph.Finally, set up producing fluid level computational mathematics model: using pump intake pressure as node, set up a stroke internal fixtion valve, the balance model acted on plunger opened by travelling valve, solve pump intake pressure, compare with the pump intake pressure utilizing oil jacket annular space to calculate, calculate the degree of depth of producing fluid level.
Real-time calculating producing fluid level Mathematical Modeling is with pump intake pressure when pump dynagraoph unlatching, closing point for node, calculating producing fluid level:
The first step:
Coupled columns fills in row force analysis, as shown in Figure 4, is the stressed schematic diagram of oil well pump in application example pit shaft of the present invention, sets up a stroke internal fixtion valve, the equilibrium equation acted on plunger opened by travelling valve:
Moment pump load opened by standing valve: F
u=P
p(f
p-f
r)-(p
n-△ p
1) f
p+ W
p+ f
Moment pump load opened by travelling valve: F
d=P
p(f
p-f
r)-(p
p+ △ p
2) f
p+ W
p-f
Two formulas are subtracted each other, pump intake pressure
In formula:
F
u---moment pump load opened by standing valve, N; F
d---moment pump load opened by travelling valve, N; P
p---travelling valve upper pressure, Pa; W
p---plunger weight, N; F---the frictional force between plunger and pump barrel, N; f
p, f
r---plunger, sucker rod sectional area, m
2; △ p
1---travelling valve Pressure Drop, Pa; △ p
2---standing valve Pressure Drop, Pa.
Second step:
Pump intake pressure is calculated by utilizing oil jacket annular space.
Pump intake pressure is gas column section and gassiness oil column section two sections of pressure sums:
In formula:
P
n---pump intake pressure, Pa; p
d---the pressure at producing fluid level place, Pa; △ p
0---producing fluid level to the pressure at pump place, Pa; p
c---surface casing pressure, Pa; T
avg---gas column average temperature, DEG C; T
avg---producing fluid level place temperature, DEG C; r
g---natural gas relative density; L
g---gas column length, m; Compressibility factor under Z---gas column average pressure and average temperature; ρ
0---the density of crude oil, kg/m3; L
p---pump setting depth, m; L
f---producing fluid level, m.
3rd step:
Bring (2) formula into (1), arrange and obtain well fluid level:
5. the difficult point calculated in said process comprises fluid density in oil pipe and determines, and pump dynagraoph travelling valve, standing valve opening point load value determination:
Difficult point 1: in oil pipe, fluid density is determined:
Polished rod load inverting densimetry: polished rod load comprises fluid density information in oil pipe, can utilize polished rod load Inversion Calculation fluid density.
Consider the factors such as directional well frictional resistance, wax deposition, the design formulas of, minimum load maximum according to oil pumper:
Wherein, P
max---oil pumper peak load, N; P
min---oil pumper minimum load, N; p
bar---sucker rod is gravity in atmosphere, N; p
liquid---the gravity of fluid column in ram area, N, s---stroke, m; N---jig frequency, 1/min.
Difficult point 2: solve pump dynagraoph travelling valve, standing valve opening point load value:
Decomposite load-time curve y=f (t) by pump dynagraoph (see Fig. 7), solve the variable quantity of the slope of load-time graph, find gradient maxima, be i.e. pump dynagraoph travelling valve opening point load value F
uwith standing valve opening point load value F
d.
t
j∈{t
0+0.1,t
0+0.2,......t
0+0.1M}
Finally, because server end is configured with database server and Web server, adopt browser/server (Browser/Server) structure to build website, check well fluid level by mandate, adjust the functions such as ginseng in real time in LAN.
Such as, application example of the present invention is by well head installed load, displacement transducer, round-the-clock collection polished rod indicator card, data-signal is sent to website by cable and radio transmission apparatus, website has been installed merit figure and has been calculated producing fluid level software, first the polished rod indicator card that every 10 minutes gather is converted into pump dynagraoph, whole day amounts to 144 pump dynagraoph, producing fluid level Mathematical Modeling is calculated by merit figure, calculate well fluid level, whole day can draw a producing fluid level calculated curve, can also obtain a well fluid level by weighted average.As shown in Figure 8, for application example whole day of the present invention amounts to 144 pump dynagraoph schematic diagrames; As shown in Figure 9, be application example well fluid level whole day calculated curve schematic diagram of the present invention.
Tentative calculation 300 mouthfuls of oil wells (data as shown in Table 1 below).As shown in Figure 10, for calculating producing fluid level statistics block diagram under the various operating mode of application example oil well of the present invention, wherein 258 mouthfuls of oil well calculation and actual measurement producing fluid level absolute error <75m, account for 86% of oil well sum.By oil well condition, result of calculation is analyzed, under finding the operating modes such as slight feed flow is not enough, oil well is working properly, slight wax deposition, calculate relatively accurate, can in conjunction with the further research under other operating mode, continuous sophisticated model, to improve accuracy in computation.
Table 1
Application example of the present invention is because adopt by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather and obtain load and time graph, and displacement and time graph; Utilize described load and time graph, and displacement and time graph, obtain polished rod indicator card; Described polished rod indicator card according to obtaining obtains pump dynagraoph; Described pump dynagraoph is utilized to obtain the technological means of the degree of depth of well fluid level, so reach following technique effect: provide one and realize at lower cost and real-time, the continuous monitoring scheme of effective producing fluid level, change the working method of manually carrying out the test of machine-pumped oil well producing fluid level to scene, solve the execute-in-place cycle long, labour intensity is large, the problem that instantaneous test value is representative not strong, reaches the target of Real-time Obtaining producing fluid level, coordination supply and discharge relation, raising oil well production efficiency at lower cost.When not increasing any acquisition instrument equipment, achieving and utilizing indicator card to calculate producing fluid level in real time, producing fluid level monitoring is changed into " on-the-spot broadcasting " from " afterwards recorded broadcast ".
Those skilled in the art can also recognize the various illustrative components, blocks (illustrativelogicalblock) that the embodiment of the present invention is listed, unit, and step can pass through electronic hardware, computer software, or both combinations realize.For the replaceability (interchangeability) of clear displaying hardware and software, above-mentioned various illustrative components (illustrativecomponents), unit and step have universally described their function.Such function is the designing requirement realizing depending on specific application and whole system by hardware or software.Those skilled in the art for often kind of specifically application, can use the function described in the realization of various method, but this realization can should not be understood to the scope exceeding embodiment of the present invention protection.
Various illustrative logical block described in the embodiment of the present invention, or unit can pass through general processor, digital signal processor, special IC (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the design of above-mentioned any combination realizes or operates described function.General processor can be microprocessor, and alternatively, this general processor also can be any traditional processor, controller, microcontroller or state machine.Processor also can be realized by the combination of calculation element, such as digital signal processor and microprocessor, multi-microprocessor, and a Digital Signal Processor Core combined by one or more microprocessor, or other similar configuration any realizes.
The software module that method described in the embodiment of the present invention or the step of algorithm directly can embed hardware, processor performs or the combination of both.Software module can be stored in the storage medium of other arbitrary form in RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this area.Exemplarily, storage medium can be connected with processor, with make processor can from storage medium reading information, and write information can be deposited to storage medium.Alternatively, storage medium can also be integrated in processor.Processor and storage medium can be arranged in ASIC, and ASIC can be arranged in user terminal.Alternatively, processor and storage medium also can be arranged in the different parts in user terminal.
In one or more exemplary design, the above-mentioned functions described by the embodiment of the present invention can realize in any combination of hardware, software, firmware or this three.If realized in software, these functions can store on the medium with computer-readable, or are transmitted on the medium of computer-readable with one or more instruction or code form.Computer readable medium comprises computer storage medium and is convenient to make to allow computer program transfer to the telecommunication media in other place from a place.Storage medium can be that any general or special computer can the useable medium of access.Such as, such computer readable media can include but not limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage device, or other anyly may be used for carrying or store the medium that can be read the program code of form with instruction or data structure and other by general or special computer or general or special processor.In addition, any connection can be properly termed computer readable medium, such as, if software is by a coaxial cable, fiber optic cables, twisted-pair feeder, Digital Subscriber Line (DSL) or being also comprised in defined computer readable medium with wireless way for transmittings such as such as infrared, wireless and microwaves from a web-site, server or other remote resource.Described video disc (disk) and disk (disc) comprise Zip disk, radium-shine dish, CD, DVD, floppy disk and Blu-ray Disc, and disk is usually with magnetic duplication data, and video disc carries out optical reproduction data with laser usually.Above-mentioned combination also can be included in computer readable medium.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a measuring method for well fluid level, is characterized in that, the measuring method of described well fluid level comprises:
By being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement being measured, gathering and obtaining load and time graph, and displacement and time graph;
Utilize described load and time graph, and displacement and time graph, obtain polished rod indicator card;
Described polished rod indicator card according to obtaining obtains pump dynagraoph;
Described pump dynagraoph is utilized to obtain the degree of depth of well fluid level;
The described degree of depth utilizing described pump dynagraoph to obtain well fluid level, comprising:
Described pump dynagraoph is utilized to set up producing fluid level computational mathematics model, to obtain the degree of depth of well fluid level;
Describedly utilize described pump dynagraoph to set up producing fluid level computational mathematics model, to obtain the degree of depth of well fluid level, comprising:
Using pump intake pressure as node, set up a stroke internal fixtion valve, the balance model acted on plunger opened by travelling valve, fill in row force analysis with coupled columns and obtain the first pump intake pressure, then described first pump intake pressure and the second pump intake pressure obtained that distributed by oil jacket annular pressure are compared, to ask for the degree of depth of well fluid level;
Fluid level depth of oil well design formulas is:
L
ffor dynamic oil level, m; F
ufor moment pump load opened by standing valve, N; F
dfor moment pump load opened by travelling valve, N; F is the frictional force between plunger and pump barrel, N; △ p
1for travelling valve Pressure Drop, Pa; △ p
2for standing valve Pressure Drop, Pa; p
dfor the pressure at producing fluid level place, Pa; P
hfor wellhead back pressure, Pa; f
pfor plunger sectional area; ρ
lfor fluid density in oil pipe;
Wherein, P
maxfor oil pumper peak load, N; P
minfor oil pumper minimum load, N; p
barfor sucker rod gravity in atmosphere, N; p
liquidfor the gravity of fluid column in ram area, N, s are stroke, m; N is jig frequency, 1/min; L
pfor pump setting depth, m.
2. the measuring method of well fluid level as claimed in claim 1, it is characterized in that, described by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather and obtain load and time graph, with displacement and time graph, comprising:
By being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather load and time graph, after displacement and time graph, image data is reached well head collector by cable, be uploaded to well site host remote terminal control system RTU by well head collector again, then by well group antenna, image data reached main website receive centre antenna with the form of ripple.
3. the measuring method of well fluid level as claimed in claim 1, is characterized in that, described utilize described pump dynagraoph to obtain the degree of depth of well fluid level after, the measuring method of described well fluid level also comprises:
Based on client/server configuration, browser/server structure is auxiliary, designs and sets up system network architecture, to issue the degree of depth of described well fluid level in units of oil recovery factory.
4. a measuring system for well fluid level, is characterized in that, the measuring system of described well fluid level comprises:
Data acquisition unit, for by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, measures pumping rod of well pumping unit load and displacement, gathers and obtains load and time graph, and displacement and time graph;
Data processing equipment, for utilizing described load and time graph, and displacement and time graph, obtain polished rod indicator card; Described polished rod indicator card according to obtaining obtains pump dynagraoph; Described pump dynagraoph is utilized to obtain the degree of depth of well fluid level;
Described data processing equipment, specifically for utilizing described pump dynagraoph to set up producing fluid level computational mathematics model, to obtain the degree of depth of well fluid level;
Described data processing equipment, further specifically for using pump intake pressure as node, set up a stroke internal fixtion valve, the balance model acted on plunger opened by travelling valve, fill in row force analysis with coupled columns and obtain the first pump intake pressure, then described first pump intake pressure and the second pump intake pressure obtained that distributed by oil jacket annular pressure are compared, to ask for the degree of depth of well fluid level;
Fluid level depth of oil well design formulas is:
L
ffor dynamic oil level, m; F
ufor moment pump load opened by standing valve, N; F
dfor moment pump load opened by travelling valve, N; F is the frictional force between plunger and pump barrel, N; △ p
1for travelling valve Pressure Drop, Pa; △ p
2for standing valve Pressure Drop, Pa; p
dfor the pressure at producing fluid level place, Pa; P
hfor wellhead back pressure, Pa; f
pfor plunger sectional area; ρ
lfor fluid density in oil pipe;
Wherein, P
maxfor oil pumper peak load, N; P
minfor oil pumper minimum load, N; p
barfor sucker rod gravity in atmosphere, N; p
liquid---the gravity of fluid column in ram area, N, s are stroke, m; N is jig frequency, 1/min; L
pfor pump setting depth, m.
5. the measuring system of well fluid level as claimed in claim 4, it is characterized in that, described data acquisition unit, by being arranged on the load transducer on well head polished rod eye and the displacement transducer below walking beam on pumping units, pumping rod of well pumping unit load and displacement are measured, gather load and time graph, after displacement and time graph, image data is reached well head collector by cable, well site host remote terminal control system RTU is uploaded to again by well head collector, again by well group antenna, image data is reached main website receive centre antenna with the form of ripple, so that data processing equipment receives.
6. the measuring system of well fluid level as claimed in claim 5, it is characterized in that, the measuring system of described well fluid level also comprises:
Result distributing device, after described data processing equipment utilizes described pump dynagraoph to obtain the degree of depth of well fluid level, for based on client/server configuration, browser/server structure is auxiliary, design and set up system network architecture, to issue the degree of depth of described well fluid level in units of oil recovery factory.
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