CN107608940A - A kind of oil well interval pumping cycle determination method - Google Patents
A kind of oil well interval pumping cycle determination method Download PDFInfo
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- CN107608940A CN107608940A CN201710750255.3A CN201710750255A CN107608940A CN 107608940 A CN107608940 A CN 107608940A CN 201710750255 A CN201710750255 A CN 201710750255A CN 107608940 A CN107608940 A CN 107608940A
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Abstract
The invention provides a kind of oil well interval pumping cycle determination method, build-up of fluid rule is moved as foundation using intermittent oil well, based on oil well indicator card metric results, driven a well by stopping well three times, it can determine that the well fluid level recovery curve of well, the 4th analysis that drives a well take out the cycle between can determine that oil well.This method is simple to operation, avoids the artificial deficiency surveyed liquid level and empirically determine intermittent pumping cycle, reduces staff labor intensity, energy-conservation is realized on the premise of Liquid output does not drop, be advantageous to the Efficient Development in oil field and the lifting of managerial skills.
Description
Technical field
The invention belongs to oil extraction in oil field technology field, and in particular to a kind of oil well interval pumping cycle determination method.
Background technology
For low yield inefficient well, oilwell produced fluid amount is all relatively low, even if being adjusted to still suffer from " sky after minimum swabbing parameter
Take out " phenomenon, causes the problems such as reactive loss is big, the abrasion of pumping unit, pipe, bar is big, oil well pump detection period is short, adds equipment dimension
Shield and underground work expense, it is unfavorable for the Efficient Development of oil well.Solve sky by the way of oil field is mainly opened between at this stage to take out, and
Opened between oil field mainly according to data such as oil well output, indicator card, hydrodynamic faces, by manual analysis, determine oil well timing start-up, stop
Machine is realized.This method opens pumpingh well the determination at interval of taking out and stop finding time not science, can not be with the change of oil well condition
And change, the problems such as high to the requirement of post worker's sense of responsibility, management service difficulty is big be present.
Therefore, it is necessary to open the research of related fields between carrying out oil well, propose that one kind more scientifically and rationally determines oil well
Between open the method for system, so as to instruct the exploitation of low yield inefficient well, play oil well potential to greatest extent, save the energy, finally
Reaching reduces oil field development cost, improves oil development level, realizes precision management, the cost efficiency in oil field.
The content of the invention
More scientific and reasonable method is compared than opening system between artificial determine the purpose of the present invention is to propose to a kind of, is realized low
Produce the effective exploitation of poorly efficient oil well.
Technical scheme provided by the invention is as follows：
A kind of oil well interval pumping cycle determination method, comprises the following steps：
Step 1) makes oil pumper is not empty to take out, stops, drives a well three times according to oil well liquid-producing situation, record respectively every time from stop to
Stopping before driving a well and each stops fluid level depth of oil well L corresponding to well time t at well time t, by three groups of data substitution hydrodynamic faces
Time recovers relational expression, it is determined that dynamic fluid buildup curve L (t)；
Step 2) is calculated the time required to hydrodynamic face returns to peak according to dynamic fluid buildup curve, i.e., stops for the 4th time
The well time, then carry out stopping well the 4th time；
Dynamic fluid buildup curve L (t) is converted into by step 3) recovers submergence curve, obtains the 4th time and stops in the well period
Recovery submergence curve；
After step 4) starts the 4th opening well and making production, to stop well start time as 0 moment, record and sunk corresponding to each moment
Do not spend and Liquid output, respectively obtain production submergence curve and Liquid output curve, and calculate everyAccumulative production liquid in time
Measure Qp, wherein p is interval times, the m ... ... n ... ... p that takes 1,2 ... ..., and stable state production Liquid output is set into target Liquid output is
QTarget；
When since m points time, when accumulative Liquid output is more than target Liquid output, then reckoning always is each since m points time
Interior average Liquid output, if any point time after m points time is nth point time, verify average Liquid outputWhether set up, nth point time is not to stop well time point if setting up, and continuation checks backward, until
Above formula is invalid, if average Liquid outputThen nth point time is exactly to stop well time point, then is taken out
Cycle is defined as out Tdn-Tdm, stop Tmt-Tnt, wherein, TntIt is L for submergencenTime corresponding to Shi Huifu submergence curves,
TmtIt is L for submergencemTime corresponding to Shi Huifu submergence curves, T(n-1)tIt is L for submergence(n-1)Shi Huifu sinkings are write music
Time corresponding to line, TdnIt is L for submergencenWhen produce submergence curve corresponding to time, TdmIt is L for submergencemWhen produce
Time corresponding to submergence curve.
It is L (t)=a-be that the time of hydrodynamic face described in step 1), which recovers relational expression,-ct, wherein, L (t) is well fluid level
Depth, for t to stop the well time, a, b, c are undetermined coefficient.
Recover the dynamic fluid buildup curve L (t) of submergence curve=pump setting depth-described in step 2), wherein, every mouthful of well
Pump setting depth is definite value.
Fluid level depth of oil well described in step 1) is obtained by oil well indicator card.
Add up Liquid output Q described in step 4)pObtained by oil well indicator card.
The beneficial effects of the invention are as follows：
This oil well interval pumping cycle determination method provided by the invention, it is simple to operation, artificial liquid level of surveying is avoided with warp
The deficiency for determining intermittent pumping cycle is tested, staff labor intensity is reduced, energy-conservation is realized on the premise of Liquid output does not drop, is advantageous to
The Efficient Development in oil field and the lifting of managerial skills.
It is described in further details below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is the analysis process schematic diagram of the present invention.
Embodiment
Embodiment 1：
A kind of oil well interval pumping cycle determination method is present embodiments provided, is comprised the following steps：
Step 1) makes oil pumper is not empty to take out, stops, drives a well three times according to oil well liquid-producing situation, record respectively every time from stop to
Stopping before driving a well and each stops fluid level depth of oil well L corresponding to well time t at well time t, by three groups of data substitution hydrodynamic faces
Time recovers relational expression, it is determined that dynamic fluid buildup curve L (t)；
Step 2) is calculated the time required to hydrodynamic face returns to peak according to dynamic fluid buildup curve, i.e., stops for the 4th time
The well time, then carry out stopping well the 4th time；
Dynamic fluid buildup curve L (t) is converted into by step 3) recovers submergence curve, obtains the 4th time and stops in the well period
Recovery submergence curve；
After step 4) starts the 4th opening well and making production, to stop well start time as 0 moment, record and sunk corresponding to each moment
Do not spend and Liquid output, respectively obtain production submergence curve and Liquid output curve, and calculate everyAccumulative production liquid in time
Measure Qp, wherein p is interval times, the m ... ... n ... ... p that takes 1,2 ... ..., and stable state production Liquid output is set into target Liquid output is
QTarget；
When since m points time, when accumulative Liquid output is more than target Liquid output, then reckoning always is each since m points time
Interior average Liquid output, if any point time after m points time is nth point time, verify average Liquid outputWhether set up, nth point time is not to stop well time point if setting up, and continuation checks backward, until
Above formula is invalid, if average Liquid outputThen nth point time is exactly to stop well time point, then is taken out
Cycle is defined as out Tdn-Tdm, stop Tmt-Tnt, wherein, TntIt is L for submergencenTime corresponding to Shi Huifu submergence curves,
TmtIt is L for submergencemTime corresponding to Shi Huifu submergence curves, T(n-1)tIt is L for submergence(n-1)Shi Huifu sinkings are write music
Time corresponding to line, TdnIt is L for submergencenWhen produce submergence curve corresponding to time, TdmIt is L for submergencemWhen produce
Time corresponding to submergence curve.
Embodiment 2：
On the basis of embodiment 1, a kind of oil well interval pumping cycle determination method is present embodiments provided, described in step 1)
It is L (t)=a-be that the hydrodynamic face time, which recovers relational expression,-ct, wherein, L (t) is fluid level depth of oil well, and t is stops the well time, a, b,
C is undetermined coefficient.
It is as follows that the hydrodynamic face time recovers relational expression derivation：
When the timing of liquid production index one, then yield and producing pressure differential are in linear relation, i.e.,：
Q=J (Pi-Pwf) (1)
In formula：Q is daily fluid production rate；J is fluid productivity index；PiFor strata pressure；PwfFor flowing bottomhole pressure (FBHP).
In oil well liquid level recovery process, according to the definition of wellbore storage constant, oil reservoir Liquid output and shaft bottom can be write out
Flowing the relation pressed is
In formula：γ is sleeve pipe inside radius m；G is well liquid density kg/m3。
Again it integrate by (1)=(2) formula：
Other flowing bottomhole pressure (FBHP) Pwf(t) change with the gradual recovery of liquid level, its change function is:
Pwf(t)=pgL (t) (4)
As build-up of fluid phase t=0, oil well liquid level is highly L0, then flowing bottomhole pressure (FBHP) now be：
Pi-pgL0=ec (5)
(4) and (5) are brought into (3) formula to obtain：
(6) formula is rewritten into exponential function relation, is shown below：
L (t)=a-be-ct (7)
L (t) is fluid level depth of oil well, and for t to stop the well time, a, b, c are undetermined coefficient.
It was found from above-mentioned functional relation, as long as can provide three groups of data is assured that above-mentioned functional relation (7).Cause
This, moves build-up of fluid rule as foundation using intermittent oil well, is driven a well by stopping well three times, it may be determined that the dynamic build-up of fluid of producing well is bent
Line.
Wherein, submergence curve=pump setting depth-dynamic fluid buildup curve L (t) is recovered, wherein, the pump of every mouthful of well is hung deeply
Spend for definite value.During sucker rod pumping, by pump dynamograph meeting producing well indicator card, oil well indicator card is with displacement by load
The closing diagram that is formed of change curve, fluid level depth of oil well and accumulative Liquid output can be obtained by oil well indicator card
Qp。
Submergence curve, production submergence curve and Liquid output Drawing of Curve will be recovered in same figure, as shown in figure 1,
Since m points time, accumulative Liquid output is more than target Liquid output, then is calculated always since m points time eachInterior average production liquid
Amount, the average Liquid output of the nth point time after m points timeThen the nth point time is exactly to stop the well time
Point, then taking out the cycle is defined as out Tdn-Tdm, stop Tmt-Tnt.In the present embodiment,(gathered according to work(figure
Frequency can adjust), T in Fig. 1maxStop the well time for the 4th time.
The present embodiment belongs to the common knowledge and known technology of the art without the part specifically described, herein not
Another one describes in detail.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (5)
1. a kind of oil well interval pumping cycle determination method, it is characterised in that comprise the following steps：
Step 1) makes oil pumper is not empty to take out, stops, drives a well three times, record respectively every time from stopping to driving a well according to oil well liquid-producing situation
It is preceding to stop well time t and each stop fluid level depth of oil well L corresponding to well time t, by three groups of data substitution hydrodynamic face times
Recover relational expression, it is determined that dynamic fluid buildup curve L (t)；
Step 2) is calculated the time required to hydrodynamic face returns to peak according to dynamic fluid buildup curve, i.e., when stopping well the 4th time
Between, then carry out stopping well the 4th time；
Dynamic fluid buildup curve L (t) is converted into by step 3) recovers submergence curve, obtains stopping for the 4th time extensive in the well period
Multiple submergence curve；
After step 4) starts the 4th opening well and making production, to stop well start time as 0 moment, submergence corresponding to each moment is recorded
And Liquid output, production submergence curve and Liquid output curve are respectively obtained, and calculate every the accumulative Liquid output in the ▽ t times
Qp, wherein p is interval times, the m ... ... n ... ... p that takes 1,2 ... ..., and stable state production Liquid output is set into target Liquid output is
QTarget；
Start when since m points time, when accumulative Liquid output is more than target Liquid output, then calculated always in each ▽ t since m points are secondary
Average Liquid output, if any point time after m points time is nth point time, verify average Liquid outputIt is
No establishment, nth point time is not to stop well time point if setting up, and continuation checks backward, until above formula is invalid, if average production
Liquid measureThen nth point time is exactly to stop well time point, then taking out the cycle is defined as out Tdn-Tdm, stop
Tmt-Tnt, wherein, TntIt is L for submergencenTime corresponding to Shi Huifu submergence curves, TmtIt is L for submergencemShi Huifu sinks
The time do not write music corresponding to line, T(n-1)tIt is L for submergence(n-1)Time corresponding to Shi Huifu submergence curves, TdnFor sinking
Spend for LnWhen produce submergence curve corresponding to time, TdmIt is L for submergencemWhen produce submergence curve corresponding to when
Between.
A kind of 2. oil well interval pumping cycle determination method according to claim 1, it is characterised in that：Hydrodynamic described in step 1)
It is L (t)=a-be that the face time, which recovers relational expression,-ct, wherein, L (t) is fluid level depth of oil well, and t is stops the well time, a, b, and c is
Undetermined coefficient.
A kind of 3. oil well interval pumping cycle determination method according to claim 1, it is characterised in that：Recover described in step 2)
Submergence curve=pump setting depth-dynamic fluid buildup curve L (t), wherein, the pump setting depth of every mouthful of well is definite value.
A kind of 4. oil well interval pumping cycle determination method according to claim 1 or 2, it is characterised in that：Described in step 1)
Fluid level depth of oil well is obtained by oil well indicator card.
A kind of 5. oil well interval pumping cycle determination method according to claim 1, it is characterised in that：Add up described in step 4)
Liquid output QpObtained by oil well indicator card.
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Cited By (9)
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| CN108301809A (en) * | 2018-02-09 | 2018-07-20 | 中国石油化工股份有限公司临汾煤层气分公司 | A kind of coal bed gas well dynamic adjustment pump extension discharge and mining method |
| CN108979602A (en) * | 2018-08-14 | 2018-12-11 | 西安朗信电子技术有限公司 | A kind of oil production machine energy saver and well fluid level model estimation method |
| CN110059954A (en) * | 2019-04-17 | 2019-07-26 | 陕西安控科技有限公司 | A kind of high-precision function figure meter production amendment statistical method |
| CN110766562A (en) * | 2019-09-25 | 2020-02-07 | 中国石油天然气股份有限公司 | Method for determining oil well interval pumping time |
| CN112096370A (en) * | 2020-09-09 | 2020-12-18 | 中国石油天然气股份有限公司 | Interval-opening-system self-learning method |
| CN113107439A (en) * | 2020-01-10 | 2021-07-13 | 中国石油天然气股份有限公司 | Oil well oil fishing method, device and storage medium |
| CN113298669A (en) * | 2020-12-09 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and device for determining pumping period of pumping well based on pressure recovery data |
| CN113294148A (en) * | 2020-07-30 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and device for determining pumping cycle of oil-water two-phase pumping well of water-drive thin oil reservoir |
| CN114622869A (en) * | 2020-12-10 | 2022-06-14 | 中国石油天然气股份有限公司 | Method for determining intermittent pumping system of low-yield liquid oil well |
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Cited By (14)
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| CN108301809A (en) * | 2018-02-09 | 2018-07-20 | 中国石油化工股份有限公司临汾煤层气分公司 | A kind of coal bed gas well dynamic adjustment pump extension discharge and mining method |
| CN108979602A (en) * | 2018-08-14 | 2018-12-11 | 西安朗信电子技术有限公司 | A kind of oil production machine energy saver and well fluid level model estimation method |
| CN110059954A (en) * | 2019-04-17 | 2019-07-26 | 陕西安控科技有限公司 | A kind of high-precision function figure meter production amendment statistical method |
| CN110766562B (en) * | 2019-09-25 | 2022-12-02 | 中国石油天然气股份有限公司 | Method for determining oil well interval pumping time |
| CN110766562A (en) * | 2019-09-25 | 2020-02-07 | 中国石油天然气股份有限公司 | Method for determining oil well interval pumping time |
| CN113107439A (en) * | 2020-01-10 | 2021-07-13 | 中国石油天然气股份有限公司 | Oil well oil fishing method, device and storage medium |
| CN113107439B (en) * | 2020-01-10 | 2023-02-28 | 中国石油天然气股份有限公司 | Oil well oil fishing method, device and storage medium |
| CN113294148A (en) * | 2020-07-30 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and device for determining pumping cycle of oil-water two-phase pumping well of water-drive thin oil reservoir |
| CN113294148B (en) * | 2020-07-30 | 2023-12-22 | 中国石油天然气股份有限公司 | Method and device for determining pumping period of oil-water two-phase pumping well of water-driven thin oil reservoir |
| CN112096370A (en) * | 2020-09-09 | 2020-12-18 | 中国石油天然气股份有限公司 | Interval-opening-system self-learning method |
| CN112096370B (en) * | 2020-09-09 | 2023-12-26 | 中国石油天然气股份有限公司 | Self-learning method of intermittent system |
| CN113298669A (en) * | 2020-12-09 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and device for determining pumping period of pumping well based on pressure recovery data |
| CN113298669B (en) * | 2020-12-09 | 2024-03-01 | 中国石油天然气股份有限公司 | Method and device for determining pumping period of pumping well based on pressure recovery data |
| CN114622869A (en) * | 2020-12-10 | 2022-06-14 | 中国石油天然气股份有限公司 | Method for determining intermittent pumping system of low-yield liquid oil well |
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