CN106194119B - Load reduction and efficiency improvement method for oil pumping well - Google Patents
Load reduction and efficiency improvement method for oil pumping well Download PDFInfo
- Publication number
- CN106194119B CN106194119B CN201510219138.5A CN201510219138A CN106194119B CN 106194119 B CN106194119 B CN 106194119B CN 201510219138 A CN201510219138 A CN 201510219138A CN 106194119 B CN106194119 B CN 106194119B
- Authority
- CN
- China
- Prior art keywords
- load
- rod
- factor
- polished rod
- oil
- 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.)
- Active
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000003129 oil well Substances 0.000 claims description 35
- 239000012530 fluid Substances 0.000 claims description 20
- 238000004364 calculation method Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 19
- 238000005457 optimization Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 238000004458 analytical method Methods 0.000 claims description 11
- 241000219104 Cucurbitaceae Species 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 12
- 239000000725 suspension Substances 0.000 abstract description 12
- 239000003921 oil Substances 0.000 description 53
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000011161 development Methods 0.000 description 8
- 238000013507 mapping Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000010729 system oil Substances 0.000 description 3
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010187 selection method Methods 0.000 description 2
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010219 correlation analysis Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a load reduction and efficiency improvement method for an oil pumping well, which comprises the following steps: analyzing a plurality of composition factors influencing the suspension point load of the pumping well to determine the influence degree of the composition factors on the suspension point load; and optimizing the corresponding composition factors to reduce the suspension point load according to the influence degree of the composition factors on the suspension point load. By applying the technical scheme of the invention, the influence degree of the composition factors on the suspension point load is determined by analyzing the plurality of composition factors influencing the suspension point load of the pumping well, and the corresponding composition factors are optimized to reduce the suspension point load according to the influence degree of the composition factors on the suspension point load, so that the suspension point load is effectively reduced, and the problem of high cost in developing low-permeability oil reservoirs is solved.
Description
Technical field
The present invention relates to oil field development field, the method for proposing effect in particular to a kind of load shedding of rod-pumped well.
Background technique
Survey data shows that 79,900,000,000 tons of national petroleum surplus yield, wherein hyposmosis resource is 43,100,000,000 tons, accounts for residue
The 60% of petroleum resources total amount, therefore low-permeability oil deposit, also just at the main body of oil field development from now on, production scale also can be increasingly
Increase.Since low-permeability oil deposit has the characteristics that " hypotonic, low pressure, low yield ", so to save oilfield construction cost of investment, oil reservoir is more
Using the orientation well group exploitation of clump formula, compared with the middle and high infiltration oil reservoir straight well exploitation that early stage goes into operation, oil recovery well bore track, well bore knot
Structure, seepage flow produce liquid rule and biggish variation have occurred, and original " three smoke " equipment optimization selection method takes on many
Inadaptable, the problems such as producing well pump efficiency is low, pump load is superfluous, system effectiveness is low, also highlights increasingly.Simultaneously because in price
Factors, the Invitation of Oilfield Development operating cost such as rise also increasingly increase, it is therefore necessary to seek a kind of suitable low-permeability oil deposit feature
" three take out " equipment optimization selection method, achievees the purpose that load shedding proposes effect.
It is well known that pumping unit hanging point load is bigger, then the power of pumping unit type and dragging motor is bigger, to consume
Steel are more, energy consumption is high, and investment and operating cost increase.
Summary of the invention
The main purpose of the present invention is to provide the methods that a kind of load shedding of rod-pumped well proposes effect, to solve exploitation hyposmosis
Oil reservoir problem at high cost.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of load shedding of rod-pumped well proposes effect
Method, comprising: multiple compositing factors of the polished rod load of analyzing influence rod-pumped well, with the determination compositing factor to described outstanding
Point load influence degree；According to the compositing factor to the polished rod load influence degree, optimize the corresponding compositing factor
To reduce the polished rod load.
Further, the corresponding compositing factor of optimization includes reducing roofbolt load and/or reduction fluid column load.
Further, the corresponding compositing factor of optimization includes reducing roofbolt load, and the reduction roofbolt load includes
Reduce the weight of sucker rod.
Further, the method for the weight for reducing sucker rod includes improving the intensity of the material of the sucker rod.
Further, after the weight for reducing sucker rod, the sucker rod is determined with the API amendment graceful method in Gourde(G)
Use boundary.
Further, the use boundary of the determining sucker rod includes: by combining with original sucker rod and using safe
Coefficient compares, and determines the maximum of safety coefficient bar diameter different with the sucker rod the is calculated when strength of oil pump rod is checked
Depth of setting.
Further, described to optimize the corresponding compositing factor including reducing fluid column load, the reduction fluid column load
Including reasonably selecting pump size so that oil well supply-discharge coordination.
Further, the selection pump size includes: to consider low-permeability oil deposit feature, in conjunction with inflow performance relationship curve,
Supply-discharge coordination figure under different Liquid outputs is drawn, at supply-discharge coordination point, reasonably selects pump size.
Further, the method for multiple compositing factors of the polished rod load of the analyzing influence rod-pumped well includes: by reality
The polished rod load surveyed is compared with common a variety of polished rod load calculation formula assumed (specified) load results, preferably is gone out to calculate and be missed
A kind of the smallest calculation method of difference；Then to polished rod load factor progress weight analysis is influenced, weighing factor is determined, and then right
The optimization of polished rod load calculation formula further progress.
It further, further include the reasonable initial stage load factor of determining pumping unit.
Further, the reasonable initial stage load factor of the determining pumping unit includes: to be changed according to operation oilwell produced fluid amount over the years
Rule and polished rod load and aqueous situation of change, assumed (specified) load change rate ηw, so that it is determined that the initial stage pumping unit that brings in is negative
Load rate.
It applies the technical scheme of the present invention, by multiple compositing factors of the polished rod load of analyzing influence rod-pumped well, with
Determine that the compositing factor influences journey to the polished rod load to the polished rod load influence degree, and according to the compositing factor
Degree optimizes the corresponding compositing factor to reduce the polished rod load, is effectively reduced polished rod load, is conducive to develop hypotonic
Saturating oil reservoir problem at high cost.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows load and suspension point runs relational graph；
Fig. 2 shows graceful (Goodman) figures in amendment Gourde(G)；
Fig. 3 shows H grades of φ 16mm strength of oil pump rod and checks；
Fig. 4 shows H grades of φ 19mm strength of oil pump rod and checks；
Fig. 5 shows H grades of φ 22mm strength of oil pump rod and checks；
Fig. 6 shows 5m3Left and right supply-discharge coordination curve graph (pump efficiency 45%)；
Fig. 7 shows 8 oil reservoir production curve of Triassic system X long；
Fig. 8 shows the oil field Triassic system A Chang-6 oil reservoir production curve；
Fig. 9 shows the oil field A area's polished rod load with aqueous change curve；
Figure 10 shows the oil field Jurassic system M and prolongs 9 oil reservoir production curves；
Figure 11 shows the oil field Jurassic system Y and prolongs 10 oil reservoir production curves；
Figure 12 shows the oil field Y and prolongs 9 polished rod loads with aqueous change curve.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In the present embodiment, the method that the load shedding of rod-pumped well proposes effect includes: the polished rod load of analyzing influence rod-pumped well
Multiple compositing factors, with the determination compositing factor to the polished rod load influence degree；According to the compositing factor to described
Polished rod load influence degree optimizes the corresponding compositing factor to reduce the polished rod load.
In the present embodiment, by multiple compositing factors of the polished rod load of analyzing influence rod-pumped well, with described group of determination
At factor to the polished rod load influence degree, and phase is optimized to the polished rod load influence degree according to the compositing factor
The compositing factor answered is effectively reduced polished rod load to reduce the polished rod load, be conducive to develop low-permeability oil deposit at
This high problem.
Preferably, described to optimize the corresponding compositing factor including reducing roofbolt load and/or reducing fluid column load.
Preferably, described to optimize the corresponding compositing factor including reducing roofbolt load, the reduction roofbolt load packet
Include the weight for reducing sucker rod.
Preferably, the method for the weight for reducing sucker rod includes improving the intensity of the material of the sucker rod.
By analyzing rod-pumped well polished rod load compositing factor, the most effective approach for reducing pumping unit load is determined.Pass through
Counting statistics analysis is carried out to rod-pumped well polished rod load composition under the difference well depth of oil field, obtains oil pumping machine polished rod load size master
To be determined that reducing roofbolt weight and reducing pump size is to reduce pumping unit load by roofbolt load and fluid column loading effect
Most effective approach.
Determine the thinking and method for reducing load.The mechanical property for fully considering current various types sucker rod, is determined
Original D grades of bar is replaced with application H grade pumping rod high-strength pumping rod, reduces the mentality of designing of oil pumping shank diameter.
Preferably, after the weight for reducing sucker rod, the sucker rod is determined with the API amendment graceful method in Gourde(G)
Use boundary.
Preferably, the use boundary of the determining sucker rod includes: by the way that safe system is combined and used with original sucker rod
Number compares, and determines when the strength of oil pump rod is checked under the maximum of safety coefficient bar diameter different with the sucker rod is calculated
Enter depth.
Determine use the boundary of H grade pumping rod with the API amendment graceful method in Gourde(G), by being combined to original D grades of bar and
It is compared using safety coefficient, safety coefficient when determining H grade pumping rod strength check, while it is different to calculate H grade pumping rod
The maximum depth of setting of bar diameter.
The compositing factor accordingly that optimizes includes reducing fluid column load, and the reduction fluid column load includes rationally selecting
Pump size is selected so that oil well supply-discharge coordination.
The selection pump size includes: to consider that low-permeability oil deposit feature draws different productions in conjunction with inflow performance relationship curve
Supply-discharge coordination figure under liquid measure reasonably selects pump size at supply-discharge coordination point.Only at supply-discharge coordination point, rationally select
Pump size is selected, oil well supply and discharge situation can be only achieved harmonious, acquisition oil well maximum lifting yield.
The method of multiple compositing factors of the polished rod load of the analyzing influence rod-pumped well includes: by the described outstanding of actual measurement
Point load is compared with common a variety of polished rod load calculation formula assumed (specified) load results, preferably goes out to calculate error the smallest by one
Kind calculation method；Then to polished rod load factor progress weight analysis is influenced, weighing factor is determined, and then to polished rod load meter
Calculate the optimization of formula further progress.
Optimize rod-pumped well polished rod load calculation formula.Actual measurement load is calculated with common several LOAD FOR formula and is carried
Lotus result compares, and preferably goes out to calculate a kind of the smallest calculation method of error；Then influence polished rod load factor is weighed
Weight analysis is determined weighing factor, and then is optimized to polished rod load calculation formula further progress.
Preferably, the method that the load shedding of rod-pumped well proposes effect further includes the reasonable initial stage load factor of determining pumping unit.
Preferably, the reasonable initial stage load factor of the determining pumping unit includes: and is changed to advise according to operation oilwell produced fluid amount over the years
Rule and polished rod load and aqueous situation of change, calculate block load change rate η w, so that it is determined that the initial stage oil pumping that brings in
Machine load factor.
Determine the reasonable initial stage load factor of pumping unit.By taking development time longer Jurassic system and Triassic system oil reservoir block as an example,
According to operation oilwell produced fluid amount changing rule over the years and polished rod load and aqueous situation of change, the block load change rate is calculated
ηw, so that it is determined that the initial stage pump load rate that brings in.
The method that the rod-pumped well load shedding proposed in the present embodiment proposes effect is using petroleum production engineering computational theory, in conjunction with oil field
Exploitation is practical, by analyzing the composition of polished rod load and influencing the principal element of polished rod load, from oil well pump selection, sucker rod
Combination, polished rod load calculation optimization, rod-pumped well initial stage load factor the several aspects of determination optimize, thus reach reduction take out
Oil machine well polished rod load reduces pumping unit model, raising oil well pump efficiency and system effectiveness, and final realize reduces oil well investment and life
Produce the purpose of operating cost.
Technical solution of the present invention is described in detail below with reference to actual production instance:
Such as known certain area Chan Jian Triassic system Chang-6 reservoir finishing drilling well depth 1500m, individual well geology, which is matched, produces 2t/d, and aqueous 40%, it closes
Reason stream pressure 4.0Mpa.A kind of method that rod-pumped well load shedding proposes effect, includes the following steps:
(1) analysis rod-pumped well polished rod load composition, determines the most effective approach for reducing pumping unit load
By carrying out counting statistics analysis (see attached drawing 1 and table to rod-pumped well polished rod load composition under the difference well depth of oil field
1), show that oil pumping machine polished rod load size mainly by roofbolt load and fluid column loading effect, is determined to reduce roofbolt weight and drop
Low pump size is the most effective approach for reducing pumping unit load.
All kinds of load proportion statistical forms under the different well depths of table 1
(2) thinking and method for reducing load are determined
The mechanical property (being shown in Table 2) of analysis comparison various types sucker rod, is determined with high-intensitive using H grade pumping rod
Sucker rod replaces original D grades of bar, while reducing the mentality of designing of oil pumping shank diameter.
Table 2D grade pumping rod and H grade pumping rod mechanical property contrast table
(3) the use boundary of H grade pumping rod is determined
The use boundary that H grade pumping rod is determined with the API amendment graceful method in Gourde(G) (see attached drawing 2), by D grades original
Bar is combined and is compared using safety coefficient, safety coefficient when determining H grade pumping rod strength check, while calculating H grades of pumpings
The maximum depth of setting of beam hanger difference bar diameter.In Fig. 2, line 1 is the Fatigue Life Curves such as sucker rod when to take safety coefficient be 4；Line 2
For Fatigue Life Curves such as sucker rods when to take safety coefficient be 2.
The API amendment graceful method in Gourde(G) determines the use boundary of H grade pumping rod.Its calculation formula is:
In formula: SF is sucker rod coefficient of utilization, σbIt is the minimum tensile strength of sucker rod, σminIt is minimum stress, σmaxIt is
Maximum stress, [σmax] it is maximum stress allowable, PL is range of stress ratio.
Sucker rod coefficient of utilization is determined according to sucker rod working environment in above formula, and general medium takes 1 when corrosion-free, is situated between
Matter takes 0.9 (0.7 is taken when high saliferous) when being water flooding, contains H20.5 is taken when S.Sucker rod maximum cyclic stress strength condition allowable
Are as follows:
σmax≤[σmax]
By comparing the use safety coefficient under previous D grades of bar combination, in conjunction with the current brought in well lower-continuous mapping in oil field, (pump is hung
Between 1600-1800, pump diameter is mostly 32mm, D grades of bar safety coefficients of φ 28mm and φ substantially 1.3 or so), determine H grades of oil pumping
Safety coefficient is 1.3 (being shown in Table 3) when bar strength check.
Table 3H grade pumping rod difference pumps diameter, pump hangs reference table under intensity
It is computed and obtains:
When taper of rod is φ 16mm × 100%, consider safety coefficient 1.3, use under φ 38mm oil well pump maximum depth for
1600m (see attached drawing 3).
When taper of rod is φ 19mm × 100%, consider safety coefficient 1.3, use under φ 38mm oil well pump maximum depth for
1800m (see attached drawing 4).
When taper of rod is H grades of φ 22mm × 100%, consideration safety coefficient 1.3, using deep under φ 38mm oil well pump maximum
For 2400m (see attached drawing 5).
In view of low-permeability oil deposit directional well, pit shaft complex, determines and use H grades in lower-continuous mapping≤1600m oil well
Sucker rod replaces D grade pumping rod, while reducing sucker rod diameter, reduces rod-pumped well polished rod load；Edge when lower-continuous mapping > 1600m
With former H grade pumping rod three-level Combination Design.
The design of 4 sucker rod Combinatorial Optimization of table
Pressure 4.0Mpa is rationally flowed according to oil well, according to stream pressure and hydrodynamic relation of plane formula
In formula: LPFor lower-continuous mapping, unit m；H is deep in oil reservoir, unit m；PwfFor stream pressure, unit Pa；PsFor
Pump intake pressure, unit Pa；ρLFor well liquid averag density, unit kg/cm3。
Calculating fluid level depth of oil well is 950m, and empirically value submergence 200m, which is pressed, designs, lower-continuous mapping 1150m,
The later period may deepen pump extension after considering in block oil mining, when calculating oil well maximum polished rod load, in conjunction with reservoir finishing drilling
Well depth, pump setting depth are calculated according to 1300m, select H grades of pumpings according to the taper of rod after optimizing in table 4 according to lower-continuous mapping
The combination of beam hanger φ 16mm × 60%+ φ second level of 16mm × 40%.
(4) consider that low-permeability oil deposit feature draws supply-discharge coordination figure under different Liquid outputs in conjunction with inflow performance relationship curve, close
Reason selection oil well pump, improves oil well pump efficiency.
Rod-pumped well supply-discharge coordination is the relationship between the fluid supply capacity on stratum and the drainage capacity of oil well pump, passes through supply and discharge
Coordinate the intuitive reflection of figure.Fluid supply capacity curve, that is, IPR curve reflects the current productive potentialities of oil well, oil well pump exhaust line
The drainage capacity of pump is reflected, then together two curve superpositions, combines the two organically, constitutes oil well
" supply-discharge coordination figure ", only at supply-discharge coordination point, oil well supply and discharge situation can be only achieved harmonious, acquisition oil well maximum lifting
Yield.
Liquid is produced daily lower than 5m by drawing long celebrating low-permeability oil deposit3Producing well supply-discharge coordination curve graph (see attached drawing 6), knot
Fruit shows for daily output liquid lower than 5m3Producing well below can only reach with φ 28mm oil well pump there are supply-discharge coordination point
Supply-discharge coordination；And for producing liquid 2m daily3Oil well below, Φ 28mm oil well pump also without supply-discharge coordination point, need to select smaller diameter
Oil well pump (Φ 25mm) reach supply-discharge coordination, play oily well capacity to the greatest extent.
According to the block proration of single well 2t/d and aqueous 40%, it is 3.94m that individual well daily output liquid, which is calculated,3, according to oil well
45% pump efficiency carries out Selection and Design, therefore selects φ 28mm oil well pump.
(5) optimize rod-pumped well polished rod load calculation formula
Actual measurement load and common several LOAD FOR formula assumed (specified) load results are compared, preferably go out to calculate error
A kind of the smallest calculation method；Then to polished rod load factor progress weight analysis is influenced, weighing factor is determined, and then to outstanding
The optimization of point load calculation formula further progress.
First is that it is preferable to determine assessment indicator systems.Its influence factor is mainly controlled by well bore, and it is preferable to determine six factors out
Include: pump depth, taper of rod, pumps diameter, is stroke, jig frequency, aqueous.
Second is that weight coefficient calculates analysis.It is acquired using Hierarchy Analysis Method in the case where weight coefficient meets condition for consistence
Weight coefficient after different factor normalization is as a result, obtain the weighing factor highest of pump setting depth.
5 polished rod load influence factor grey correlation analysis table of table
Third is that being analyzed by factor weight, determine to pump and hang as foundation, with linear regression method by different pump setting depths
Actual measurement load and determine calculation formula assumed (specified) load returned, the coefficient of regression equation be it is different pump hang under calculating
Coefficient.
Table 6 is hung with pumping as according to design factor contrast table
In conclusion optimization Pumping Unit In Directional Well polished rod load calculation formula:
1. when pump hangs < 1200m:
Maximum polished rod load:
Minimum polished rod load:
2. when 1200m≤pump hangs < 1600m:
Maximum polished rod load:
Minimum polished rod load:
3. when 1600m≤pump hangs < 2000m:
Maximum polished rod load:
Minimum polished rod load:
4. when pumping extension >=2000m:
Maximum polished rod load:
Minimum polished rod load:
In formula: PmaxIt is maximum polished rod load, PminIt is minimum polished rod load, WlIt is the liquid acted on plunger annulus area
Column load, Wr are the rod string load acted on suspension point in upstroke, Wr /It is the oil pumping acted in down stroke on suspension point
Roofbolt load, s are strokes, and n is jig frequency.
Block maximum lower-continuous mapping is built due to production and is determined as 1300m, should be counted respectively according to formula (3) and formula (4)
Calculation maximum polished rod load is 33.1kN, minimum load 19.8kN.Bring minimum and maximum load into torque arithmetic formula: Mmax=
1800S+0.202S(Pmax-Pmin), it is that 8.1kNm (empirically, calculates maximum polished rod load, slows down that peak torque, which is calculated,
Case peak torque is chosen by the 70~90% of rated value, and when practical pumping unit type selecting usually presses to be chosen by the 90% of rated value).
(6) the reasonable initial stage load factor of pumping unit is determined
The experience at scene thinks, can use safely when pumping unit load utilization rate is less than 95%.But with oil development
Time extends, and oil pumping machine polished rod load will also change.Then bringing in initial stage can with the variation of productive life maximum polished rod load
It indicates are as follows:
In formula: ηwFor maximum polished rod load change rate, unit %；Pmax0For initial stage maximum polished rod load of going into operation, unit is
kN；Pmax1For productive life maximum polished rod load, unit kN；[Pmax] it is the specified maximum load of pumping unit, unit kN.
Then, pump load rate when operation:
Triassic system oil reservoir: by being statisticallyd analyze Triassic system X long 8,6 area's oil reservoir development situation of A long (see attached drawing 7
~attached drawing 8), the results showed that with the extension of mining time, after the aqueous later period is gradually increasing, but daily fluid production rate is first on a declining curve
Substantially it tends towards stability, amplitude of variation is little.It is calculated by taking the area of the development time longer oil field A as an example, is gone into operation according to over the years
Block load change rate η is calculated with formula (9) in the polished rod load of oil well and aqueous situation of change (see attached drawing 9)wFor
6%, substituting into formula (10) and acquiring initial stage load factor is 89.6%, considers that certain complex working condition, maximum polished rod load change calibration
It is 10%.Therefore, the Triassic system brings in initial stage pump load rate by 90% selection.
Jurassic reservoir: the oil reservoir daily fluid production rate is shown by Y10 to the oil field Jurassic system Y and virus-free potato plants Y9 statistics
Greatly, about 3~5 times of the Triassic system, aqueous to be gradually increasing with the extension of mining time, after daily output liquid in rising to a certain degree
It tends to be steady (see 10~attached drawing of attached drawing 11).It is calculated by taking the development time longer oil field M Y9 oil reservoir as an example, is thrown according to over the years
Block load change rate η is calculated with formula (9) in the polished rod load of oil-producing well and aqueous situation of change (see attached drawing 12)w
It is 24%, substitutes into formula (10) and initial stage load factor η is calculatedwupIt is 76.6%.Consider that certain complex working condition, maximum polished rod carry
Lotus change rate is set to 30%.Therefore, Jurassic system brings in initial stage pump load rate by 70% selection.
Since the area Chan Jian belongs to Triassic system oil reservoir, rod-pumped well according to initial stage load factor and peak torque utilization rate according to
90% is chosen, and pumping unit rated load should be not less than 36.8kN, and peak torque is that should be not less than 9kNm, and current 4 type
Pumping unit rated load is 40kN, peak torque 9kNm, therefore the block selects 4 type pumping units that can meet production need
It asks.
2012 annual outputs build new 5683 mouthfuls of oil well of throwing, by the application of the technology, build newly with 2010 using production before the technology
It drowns oneself in a well and compares, pump efficiency is improved by 37.0% to 47.7%；Pumping unit rated load has dropped 10.0kN and (is equivalent to and has dropped a type
Number), new well load factor rises to 66.8% from 61.3%, and average individual well investment reduces by 0.7 ten thousand yuan, year investment reduction nearly 40,000,000
Member；It surveys the equal day power consumption of well and reduces 9.2kWh, about 15,700,000 degree of Nian Jieyue electric energy, 12,500,000 yuan of save the cost or more.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of method that the load shedding of rod-pumped well proposes effect characterized by comprising
Multiple compositing factors of the polished rod load of analyzing influence rod-pumped well, with the determination compositing factor to the polished rod load
Influence degree；
According to the compositing factor to the polished rod load influence degree, it is described outstanding to reduce to optimize the corresponding compositing factor
Point load, the corresponding compositing factor of optimization include reducing roofbolt load and/or reducing fluid column load, and the analyzing influence is taken out
The method of multiple compositing factors of the polished rod load of oil machine well includes:
The polished rod load of actual measurement and common a variety of polished rod load calculation formula assumed (specified) load results are compared, preferably
A kind of the smallest calculation method of error is calculated out；
Then to polished rod load factor progress weight analysis is influenced, weighing factor is determined, and then to polished rod load calculation formula
Further progress optimization, it is described to optimize the corresponding compositing factor including reducing fluid column load, the reduction fluid column load packet
It includes and reasonably selects pump size so that oil well supply-discharge coordination.
2. the method that the load shedding of rod-pumped well according to claim 1 proposes effect, which is characterized in that corresponding group of the optimization
It include reducing roofbolt load at factor, the roofbolt load that reduces includes reducing the weight of sucker rod.
3. the method that the load shedding of rod-pumped well according to claim 2 proposes effect, which is characterized in that the reduction sucker rod
The method of weight includes improving the intensity of the material of the sucker rod.
4. the method that the load shedding of rod-pumped well according to claim 2 or 3 proposes effect, which is characterized in that taken out in the reduction
After the weight of beam hanger, the use boundary of the sucker rod is determined with the API amendment graceful method in Gourde(G).
5. the method that the load shedding of rod-pumped well according to claim 4 proposes effect, which is characterized in that the determining sucker rod
Include: using boundary
By combining with original sucker rod and being compared using safety coefficient, it is safely when determining strength of oil pump rod check
Number and the maximum depth of setting for calculating the sucker rod difference bar diameter.
6. the method that the load shedding of rod-pumped well according to claim 1 proposes effect, which is characterized in that the selection oil pumping pump
Diameter includes: to consider that low-permeability oil deposit feature draws supply-discharge coordination figure under different Liquid outputs, in supply and discharge in conjunction with inflow performance relationship curve
At focal point, pump size is reasonably selected.
7. the method that the load shedding of rod-pumped well according to claim 1 proposes effect, which is characterized in that further include determining pumping unit
Reasonable initial stage load factor.
8. the method that the load shedding of rod-pumped well according to claim 1 proposes effect, which is characterized in that the determining pumping unit closes
Reason initial stage load factor includes:
According to operation oilwell produced fluid amount changing rule over the years and polished rod load and aqueous situation of change, assumed (specified) load change rate ηw,
So that it is determined that the initial stage pump load rate that brings in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510219138.5A CN106194119B (en) | 2015-05-01 | 2015-05-01 | Load reduction and efficiency improvement method for oil pumping well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510219138.5A CN106194119B (en) | 2015-05-01 | 2015-05-01 | Load reduction and efficiency improvement method for oil pumping well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106194119A CN106194119A (en) | 2016-12-07 |
| CN106194119B true CN106194119B (en) | 2019-06-07 |
Family
ID=57457864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510219138.5A Active CN106194119B (en) | 2015-05-01 | 2015-05-01 | Load reduction and efficiency improvement method for oil pumping well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106194119B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222897A (en) * | 2016-12-22 | 2018-06-29 | 中国科学院沈阳自动化研究所 | It is a kind of that the method for drawing Dynamic Control Chart is combined with statistics based on calculating |
| CN109899051B (en) * | 2017-12-07 | 2022-05-10 | 中国石油天然气股份有限公司 | Evaluation criterion determining method and device for oil well equipment and storage medium |
| CN110107275B (en) * | 2018-01-30 | 2022-05-10 | 中国石油天然气股份有限公司 | Screening method of high-energy-consumption pumping well |
| CN109086966A (en) * | 2018-07-03 | 2018-12-25 | 中国石油天然气股份有限公司 | Method and device for determining variable with large influence on unit power consumption |
| CN110008494A (en) * | 2018-12-13 | 2019-07-12 | 胜利油田森诺胜利工程有限公司 | A kind of oil field machinery oil system energy consumption method for on-line optimization |
| CN112683712B (en) * | 2020-12-22 | 2022-01-28 | 西南石油大学 | Method for determining corrosion life of sucker rod |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2856483Y (en) * | 2006-01-20 | 2007-01-10 | 中国石油天然气集团公司 | Load reducer of oil pump |
| CN200989169Y (en) * | 2006-11-10 | 2007-12-12 | 大庆油田有限责任公司 | Sucker rod for lowering beam-pumping unit pendant point loading |
| CN103226653A (en) * | 2013-03-29 | 2013-07-31 | 中国石油天然气股份有限公司 | Method for predicting suspension point load of directional well pumping unit according to pump depth in sections |
| CN103498647B (en) * | 2013-09-11 | 2016-03-09 | 中国石油天然气股份有限公司 | Parameter adjusting method and system for improving efficiency of oil pumping well system |
-
2015
- 2015-05-01 CN CN201510219138.5A patent/CN106194119B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106194119A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106194119B (en) | Load reduction and efficiency improvement method for oil pumping well | |
| CN107578342B (en) | Model coupling exhaustion method-based method for realizing low-permeability reservoir interval working system optimization | |
| CN103498663B (en) | Method and device for determining pumping process parameters of sucker-rod pump lifting system | |
| CN104747180B (en) | A kind of fracture-pore reservoir for waterflooding extraction analyzes method and application thereof | |
| CN104832131B (en) | Method for selecting optimum oil collecting parameters based on whole mechanical production and oil collecting systems | |
| CN105257279A (en) | Method for measuring working fluid level of pumping well | |
| CN110795893A (en) | Energy consumption integral optimization method for water injection development oil field injection and production system | |
| CN107939357A (en) | Improve oilfield development system efficiency method | |
| CN106651158B (en) | Quantitative evaluation method for water injection development effectiveness degree of ultra-low permeability tight reservoir horizontal well | |
| CN110008494A (en) | A kind of oil field machinery oil system energy consumption method for on-line optimization | |
| CN106522927A (en) | Improved calculating method of reasonable bottom hole flowing pressure | |
| CN104153982B (en) | Method and device for acquiring characteristic curve of underground system of rod-pumped well | |
| Zhang et al. | A real-time diagnosis method of reservoir-wellbore-surface conditions in sucker-rod pump wells based on multidata combination analysis | |
| CN107480314A (en) | Method for analyzing sensitive factors of ton liquid and hundred meter power consumption of pumping unit well | |
| CN111963161B (en) | Method and device for determining hidden abnormal oil well | |
| CN103498661B (en) | A kind of method determining oil reservoir physical data under high pressure | |
| CN106150454B (en) | Offshore oilfield vector quantization production and injection proration method | |
| CN114757029B (en) | Offshore long horizontal well alpha-beta wave multistage emission reduction filling construction simulation method and system | |
| CN101334486A (en) | Gas hydrate lowest economic reserve measuring and calculating method | |
| CN110778314A (en) | Reasonable mechanical recovery system efficiency measuring and calculating method based on oil reservoir conditions | |
| CN110067555A (en) | Method and device for determining minimum dynamic reserve of carbonate oil well | |
| Suling et al. | Analysis and Countermeasures on the Efficiency of the Pumping Wells System in the Old Oil-field | |
| CN111878074A (en) | Optimization method of shale oil reservoir development scheme | |
| RU2381354C1 (en) | Oil fields development method | |
| CN112709547A (en) | Method for judging water plugging time of water producing gas well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |