CN106124349A - Determine the critical erosion rate of gas well, the method and device of flow - Google Patents
Determine the critical erosion rate of gas well, the method and device of flow Download PDFInfo
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- CN106124349A CN106124349A CN201610470986.8A CN201610470986A CN106124349A CN 106124349 A CN106124349 A CN 106124349A CN 201610470986 A CN201610470986 A CN 201610470986A CN 106124349 A CN106124349 A CN 106124349A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
Abstract
The invention discloses and a kind of determine the critical erosion rate of gas well, the method and device of flow, described method includes: determine, according to the basic parameter of the target gas well got, the experiment parameter that erosion experiment is corresponding；Under the conditions of described experiment parameter, with initial experiment erosion flow velocity, laboratory sample is carried out erosion experiment, and obtain the weight running parameter of described laboratory sample, according to described weight running parameter and the erosion area of described laboratory sample, determine the initial erosion rate of described target gas well based on preset algorithm；Determine initial criticality erosion rate based on preset rules, and judge that described initial erosion rate is the most identical with described initial criticality erosion rate or is close；If it is identical or be close, then using described initial erosion rate as the final critical erosion rate of described target gas well.It is an object of the invention to provide and a kind of determine the critical erosion rate of gas well, the method for flow, it is possible to determine the critical erosion rate of rational gas well, flow.
Description
Technical field
The present invention relates to gas recovery field, particularly to a kind of determine the critical erosion rate of gas well, the method for flow and
Device.
Background technology
At present, when carrying out the design of gas well string size, first have to meet gas well and join the requirement of product, secondly also need comprehensive
Consider along factors such as stroke pressure loss, critical liquid carrying flow rate and critical erosion flows.Wherein, critical erosion flow is to limit to produce
Tubing string and the key factor of injection-production column jacket size.In order to meet the use requirement of gas well tubing string, on the one hand, require gas well tubing string chi
Very little can not be less than string size corresponding to critical erosion flow, to ensure the safety of gas well tubing string, it is to avoid occur to lead because of erosion
Cause the accident that tubing string lost efficacy；On the other hand, it is desirable to gas well tubing string has preferably economy.If in order to pursue gas well tubing string
Safety and increase string size simply, inevitably cause casing size, borehole size to increase, and then work be significantly increased
Industry cost, economy is poor.
At present, relatively generally acknowledge that in the industry critical erosion method of calculating flux is based on API RP 14E (offshore production platform pipe
Line design, standard is installed) method that proposes, it mainly determines the critical erosion flow of correspondence by choosing critical washout coefficient C.
But, analyzed by field technician and expert and practical experience draws: based on described by choosing critical erosion
Coefficient C determines the critical erosion flow of correspondence, and its value is the most conservative, and economy is poor.
To sum up, it is highly desirable to propose a kind of method determining rational gas well critical erosion flow, to ensure gas well pipe
While post safe handling, it is possible to reduce gas well tubing string cost as much as possible, improve economy.
Summary of the invention
It is an object of the invention to provide and a kind of determine the critical erosion rate of gas well, the method for flow, it is possible to determine reasonably
The critical erosion rate of gas well, flow, it is ensured that gas well tubing string, in the case of satisfied use requires, has preferably economy.
The above-mentioned purpose of the present invention can use following technical proposal to realize:
A kind of method determining gas well critical erosion flow, comprising:
Basic parameter according to the target gas well got determines the experiment parameter that erosion experiment is corresponding；Wherein, described base
This parameter includes: tubing string parameter and operational factor；
Under the conditions of described experiment parameter, with initial experiment erosion flow velocity, laboratory sample carried out erosion experiment, and in institute
State after erosion tested, obtain the weight running parameter of described laboratory sample, according to described weight running parameter and described reality
Test the erosion area of sample, determine the initial erosion rate of described target gas well based on preset algorithm；
Determine initial criticality erosion rate based on preset rules, and judge described initial erosion rate whether with described initially
Critical erosion rate is identical or is close；
If described initial erosion rate is identical with described initial criticality erosion rate or is close, then by described initial erosion
Speed is as the final critical erosion rate of described target gas well；
Tubing string sectional area according to described final critical erosion rate and target gas well determines the critical of described target gas well
Erosion flow.
In a preferred embodiment, if described initial erosion rate differs or phase with described initial criticality erosion rate
Close, then repeat described erosion experiment, extremely described initial erosion rate is identical with described initial criticality erosion rate or is close
Till.
In a preferred embodiment, make a reservation for less than described initial criticality erosion rate first when described initial erosion rate
During scope, reduce described initial experiment erosion flow velocity, repeat described erosion experiment；
When described initial erosion rate more than described initial criticality erosion rate the second preset range time, improve described initially
Experiment erosion flow velocity, repeats described erosion experiment.
In a preferred embodiment,
Described tubing string parameter includes: tubing string material, wall thickness, external diameter；
Operational factor includes: temperature, pressure, fluid parameter.
In a preferred embodiment, described determine that initial criticality erosion rate includes based on preset rules: based on corrosion
Speed standard determines that described initial criticality erosion rate is 0.076mm/a.
In a preferred embodiment, the initial erosion rate of described target gas well calculates according to following formula and determines:
In above formula, v1Representing described initial erosion rate, unit is m/a (rice is annual)；m0Represent that erosion experiment starts front reality
Testing the quality of sample, unit is kg (kilogram)；m1Representing that the mass unit of rear laboratory sample has been tested in erosion is kg (kilogram)；
ρ represents the density of described laboratory sample, and unit is kg/m3(kilogram every cubic metre)；S represents the erosion area of laboratory sample, single
Position is m2(square metre)；T represents erosion experimental period, and unit is a (year).
A kind of device determining gas well critical erosion flow, comprising:
Experiment parameter determines module, for determining erosion experiment correspondence according to the basic parameter of the target gas well got
Experiment parameter；Wherein, described basic parameter includes: tubing string parameter and operational factor；
Initial erosion rate determines module, under the conditions of described experiment parameter, with initial experiment erosion flow velocity to reality
Test sample and carry out erosion experiment, and after described erosion has been tested, obtain the weight running parameter of described laboratory sample, according to
Described weight running parameter and the erosion area of described laboratory sample, determine the initial punching of described target gas well based on preset algorithm
Erosion speed；
Judge module, for determining initial criticality erosion rate based on preset rules, and judges described initial erosion rate
The most identical with described initial criticality erosion rate or be close；
Final critical erosion rate determines module, if for described initial erosion rate and described initial criticality erosion rate
Identical or be close, then using described initial erosion rate as the final critical erosion rate of described target gas well；
Critical erosion flow determines module, for according to described final critical erosion rate and the tubing string cross section of target gas well
The long-pending critical erosion flow determining described target gas well.
In a preferred embodiment,
Described tubing string parameter includes: tubing string material, wall thickness, external diameter；
Operational factor includes: temperature, pressure, fluid parameter.
In a preferred embodiment, described determine that initial criticality erosion rate includes based on preset rules: based on corrosion
Speed standard determines that described initial criticality erosion rate is 0.076mm/a.
In a preferred embodiment, the initial erosion rate of described target gas well calculates according to following formula and determines:
In above formula, v1Representing described initial erosion rate, unit is m/a (rice is annual)；m0Represent that erosion experiment starts front reality
Testing the quality of sample, unit is kg (kilogram)；m1Representing that the mass unit of rear laboratory sample has been tested in erosion is kg (kilogram)；
ρ represents the density of described laboratory sample, and unit is kg/m3(kilogram every cubic metre)；S represents the erosion area of laboratory sample, single
Position is m2(square metre)；T represents erosion experimental period, and unit is a (year).
A kind of method determining the critical erosion rate of gas well, comprising:
Basic parameter according to the target gas well got determines the experiment parameter that erosion experiment is corresponding；Wherein, described base
This parameter includes: tubing string parameter and operational factor；
Under the conditions of described experiment parameter, with initial experiment erosion flow velocity, laboratory sample carried out erosion experiment, and in institute
State after erosion tested, obtain the weight running parameter of described laboratory sample, according to described weight running parameter and described reality
Test the erosion area of sample, determine the initial erosion rate of described target gas well based on preset algorithm；
Determine initial criticality erosion rate based on preset rules, and judge described initial erosion rate whether with described initially
Critical erosion rate is identical or is close；
If described initial erosion rate is identical with described initial criticality erosion rate or is close, then by described initial erosion
Speed is as the final critical erosion rate of described target gas well.
A kind of device determining the critical erosion rate of gas well, comprising:
Experiment parameter determines module, for determining erosion experiment correspondence according to the basic parameter of the target gas well got
Experiment parameter；Wherein, described basic parameter includes: tubing string parameter and operational factor；
Initial erosion rate determines module, under the conditions of described experiment parameter, with initial experiment erosion flow velocity to reality
Test sample and carry out erosion experiment, and after described erosion has been tested, obtain the weight running parameter of described laboratory sample, according to
Described weight running parameter and the erosion area of described laboratory sample, determine the initial punching of described target gas well based on preset algorithm
Erosion speed；
Judge module, for determining initial criticality erosion rate based on preset rules, and judges described initial erosion rate
The most identical with described initial criticality erosion rate or be close；
Final critical erosion rate determines module, if for described initial erosion rate and described initial criticality erosion rate
Identical or be close, then using described initial erosion rate as the final critical erosion rate of described target gas well.
The features and advantages of the invention are: this application provides and a kind of determine the critical erosion rate of gas well, the experiment of flow
Method, by the simulation of the basic parameter to target gas well, carries out corresponding erosion experiment, in experimentation, initially to face
Boundary's erosion rate, as standard of comparison, is determined the critical erosion rate of target gas well efficiently, and then is obtained target gas well
Critical erosion flow, it is possible to propose gas well erosion rate standard for gas well design of string pipe, draws critical based on this gas well standard
Erosion flow velocity, and then critical erosion flow reasonable in design, play optimal production capacity cost-effective in the reasonable scope, can carry
High gas field and the on-road efficiency of gas storage, have good Social and economic benef@.
Accompanying drawing explanation
The principle schematic of the method for the determination gas well critical erosion flow that Fig. 1 provides for one embodiment of the application；
The flow chart of the method for the determination gas well critical erosion flow that Fig. 2 provides for one embodiment of the application；
The schematic diagram of the device of the determination gas well critical erosion flow that Fig. 3 provides for one embodiment of the application；
The principle schematic of the method for the determination gas well critical erosion flow that Fig. 4 provides for one embodiment of the application；
The flow chart of the method for the determination gas well critical erosion flow that Fig. 5 provides for one embodiment of the application；
The schematic diagram of the device of the determination gas well critical erosion flow that Fig. 6 provides for one embodiment of the application.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme is elaborated, it should be understood that these
Embodiment is merely to illustrate the present invention rather than limits the scope of the present invention, after having read the present invention, this area skill
The amendment of the various equivalent form of values of the present invention is each fallen within the application claims limited range by art personnel.
Below in conjunction with the accompanying drawings to described herein determining the critical erosion rate of gas well, the method and device of flow is carried out in detail
Thin explanation.Fig. 1 is the flow chart of the method for the determination gas well critical erosion flow that one embodiment of the application provides.Although
This application provides such as following embodiment or method operating procedure shown in the drawings or apparatus structure, but based on conventional or nothing
Need performing creative labour can include more or less operating procedure or modular structure in described method or apparatus.Patrolling
Collecting and do not exist in necessary causal step or structure in property, the execution sequence of these steps or the modular structure of device do not limit
Execution sequence or modular structure in the offer of the application embodiment.Described method or the device in practice of modular structure
Or during end product execution, can connect according to embodiment or method shown in the drawings or modular structure and carry out sequentially performing
Or executed in parallel (environment of such as parallel processor or multiple threads).
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field belonging to the application
The implication that technical staff is generally understood that is identical.Term used in the description of the present application is intended merely to describe tool herein
The purpose of the embodiment of body, it is not intended that in limiting the application.Term as used herein "and/or" includes one or more
Arbitrary and all of combination of relevant Listed Items.
It should be noted that when element is referred to as " being arranged at " another element, and it can be directly on another element
Or element placed in the middle can also be there is.When an element is considered as " connection " another element, and it can be to be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " on ",
For illustrative purposes only, being not offered as is unique embodiment for D score, "left", "right" and similar statement.
It is gaseous state that the method determining gas well critical erosion flow described herein can be applied at main circulation medium
In tubing string.Concrete, for gas reservoir development, it may include that scene one: gas reservoir produces through gas well tubing string from stratum,
Separated grade obtains natural gas after processing；Scene two: stratum is as a gas storage, particularly in the summer with gas dull season, can
The most mined gas is refilled in stratum by gas well tubing string.Certainly, concrete scene is not limited to above-mentioned
Citing, the application does not make concrete restriction at this.Wherein, in scene once, described gas well tubing string, those skilled in the art
Also referred to as flow string；Scene two times, described gas well tubing string, those skilled in the art are also referred to as injection-production column jacket.
It is an object of the invention to provide and a kind of determine the critical erosion rate of gas well, the method for flow, it is possible to determine reasonably
The critical erosion rate of gas well, flow, it is ensured that gas well tubing string, in the case of satisfied use requires, has preferably economy.
Refer to Fig. 1 and Fig. 2, a kind of side determining gas well critical erosion flow that one embodiment of the application is provided
Method may include steps of.
Step S10: determine the experiment parameter that erosion experiment is corresponding according to the basic parameter of the target gas well got；Its
In, described basic parameter includes: tubing string parameter and operational factor.
In the present embodiment, the basic parameter of described target gas well can include tubing string parameter and operational factor.Wherein,
Described tubing string parameter may include that tubing string material, wall thickness, external diameter；Described operational factor may include that temperature, pressure, fluid are joined
Number.Wherein said fluid parameter may include that product constituents, gas production, aquifer yield, sand production rate and particle diameter thereof.
Wherein, the material of described tubing string specifically can specifically include grade of steel etc. with the material of vial post.Different steel are made
The ability anticorrosive, Anti-erosion that tubing string is corresponding is the most different.The material of described tubing string is known parameters, concrete, can pass through
Detect the material of tubing string or directly obtained by supplier.
The wall thickness of described tubing string and external diameter may determine that the size of tubing string, in order to one to one simulates the size of described tubing string.
Additionally, be may determine that the actual internal area of described tubing string by the wall thickness of described tubing string and external diameter.The wall thickness of described tubing string is with outer
Footpath is known parameters, concrete, by measuring or directly can be obtained by supplier.
Described temperature parameter can be obtained by the temperature detection part being arranged in target gas well.Concrete, can be in institute
At least two temperature detection part is set in stating target gas well.For example, it is possible to be respectively provided with in the well head and well of target gas well
There is a temperature detection part.The temperature of a certain depth location in the wellhead temperature detected by described temperature detection part and well
Determine the variations in temperature parameter of the unit length of target gas well；Permissible by the variations in temperature parameter of wellhead temperature and unit length
Determine the temperature of the whole each depth location of target gas well.
Described pressure parameter can be obtained by the pressure detecting part being arranged in target gas well.Wherein, described pressure ginseng
The acquisition of number is referred to the acquisition principle of described temperature parameter, and the application does not repeat at this.For example, it is possible at target gas well
Well head and shaft bottom be respectively arranged with a pressure detecting part.By well head pressure and the bottom pressure of described pressure detecting part,
And the degree of depth of target gas well, it may be determined that the pressure running parameter of the unit length of target gas well；According to described unit length
Pressure running parameter and the degree of depth of target gas well may determine that the pressure of each depth location of target gas well.Furthermore, it is possible to
In described target gas well, well head is provided with a pressure detecting part, obtains well head pressure by the pressure detecting part of described well head,
Further, calculated by well head pressure and determine bottom pressure, and then determine the pressure of target well each degree of depth interior.
Described generation gas component, gas production, aquifer yield, sand production rate and particle diameter thereof specifically can be by obtaining target gas well
Output object, then the output object to target gas well is analyzed determining.
In embodiments, the experiment parameter of described erosion experiment can pass through the basic parameter of the target gas well got
Determine.Concrete, all experiments parameter one to of described erosion experiment simulates described basic parameter.It addition, by experiment condition
Limit and be in the consideration to factors such as costs, the part Experiment parameter of described erosion experiment can one to one simulate described substantially
Parameter, and part Experiment parameter can be with basic parameter described in equivalent simulation.Such as, the experimental subject of described erosion experiment: target
Tubing string in gas well, can select the pipeline section of focal length, it might even be possible to be chosen as certain rectangular sheet.Additionally, due to it is general
Borehole pressure is higher, and general experimental provision is difficult to reach the force value of described pressure parameter, at this point it is possible to preferable according to gas
State equation carries out corresponding equivalence.
Step S12: under the conditions of described experiment parameter, carries out erosion in fact with initial experiment erosion flow velocity to laboratory sample
Test, and after described erosion has been tested, obtain the weight running parameter of described laboratory sample, according to described weight running parameter
With the erosion area of described laboratory sample, determine the initial erosion rate of described target gas well based on preset algorithm.
In the present embodiment, described initial experiment erosion flow velocity can be the critical erosion flow velocity determined in preset standard
On the basis of, carry out improving as initial experiment erosion flow velocity according to predetermined ratio.Such as, it can be true according to API RP 14E
On the basis of fixed critical erosion flow velocity, carry out improving as initial experiment erosion flow velocity according to predetermined ratio.Concrete, described
Predetermined ratio can be at least to improve 50%, to avoid described initial experiment erosion flow velocity too low, the result of erosion does not occur,
Thus reduce unnecessary experiment number, improve conventional efficient.Certainly, described predetermined ratio is not limited to 50%, art
Technical staff is under the technical spirit of the application is enlightened, it is also possible to make other change, but as long as its function realized and effect
The most same as the present application or similar, all should be covered by the application protection domain.
Wherein, improving 50% on the basis of the critical erosion flow velocity determined at API RP 14E may experiment erosion flow velocity
Or it is too low, at this point it is possible to according to predetermined scaling up or step-length, improve described experiment erosion rate, until there is erosion
Till.May experiment erosion stream furthermore, it is also possible to improve 50% on the basis of the critical erosion flow velocity that API RP 14E determines
Speed is the most too high, has occurred that serious erosion in the short time, now can reduce described experiment erosion flow velocity and carry out accordingly
Erosion experiment.
In the present embodiment, the device carrying out erosion experiment can select injecting type erosion experiment apparatus.It is currently used for
The assay device of erosion research is broadly divided into three classes: injecting type, rotary and fluid-guiding type.Wherein, rotary erosion assay device
It is used for liquid fluid systems, and in process of the test, laboratory sample does not stop to rotate, and is difficult to carry out electro chemical analysis test；Pipe flow
The hold facility place of formula is big, and experimental cost is high；Injecting type erosion test device can control well erosion rate of flow of fluid and
Impact angle, and can reach at short notice at a high speed and produce erosion effect, the test period is short.
Concrete, when carrying out injecting type erosion experiment, by the Experimental Flowing Object of simulation fluid parameter is sprayed by nozzle
It is mapped on laboratory sample, simulates the gas erosion to tubing string.In this experiment, a fritter experiment sample can be taken in order to cost-effective
Product replace full-scale tubing string, carry out erosion experiment.In order to obtain experimental data more reliably, it is to avoid owing to the time is too short,
Do not occur the situation that erosion or erosion result cannot detect to occur, experimental period can proper extension some.For example, it is possible to use for reference corruption
The way of erosion experiment, uses experiment 7 days.Concrete, the time of described erosion experiment needs guarantee test sample to have occurred that
Erosion.Concrete, about the determination of described erosion experimental period, accommodation can be made according to the change of concrete scene,
The application does not make concrete restriction at this.
In the present embodiment, after described erosion has been tested, the weight change ginseng of described laboratory sample can be obtained
Number, then determines the initial erosion rate of described target gas well according to described weight running parameter based on preset algorithm.Concrete,
Can be determined the quality of laboratory sample by modes such as weighings before described erosion experiment starts；At described erosion experiment knot
Then both are made difference and can obtain described experiment sample by Shu Hou, it is also possible to determined the quality of laboratory sample by modes such as weighings
The weight running parameter of product.Based on described weight running parameter, the actual size of Binding experiment sample draws described target gas well
Initial erosion rate.Wherein, the initial erosion rate of described target gas well calculates according to following formula and determines:
In above formula, v1Representing described initial erosion rate, unit is m/a (rice is annual)；m0Represent that erosion experiment starts front reality
Testing the quality of sample, unit is kg (kilogram)；m1Representing that the mass unit of rear laboratory sample has been tested in erosion is kg (kilogram)；
ρ represents the density of described laboratory sample, and unit is kg/m3(kilogram every cubic metre)；S represents the erosion area of laboratory sample, single
Position is m2(square metre)；T represents erosion experimental period, and unit is a (year).
As a example by the test specimen of certain rectangle of example, above-mentioned parameters, except initial erosion rate v1Outside for unknown quantity, its
He is known quantity.
Step S14: determine initial criticality erosion rate based on preset rules, and judge described initial erosion rate whether with
Described initial criticality erosion rate is identical or is close.
When gas well inner fluid speed reaches certain value, when tubing string is produced obvious erosion effect, this rate of flow of fluid is called and faces
Boundary's erosion flow velocity.Described critical erosion flow velocity and the critical erosion flow that product is this critical erosion flow velocity of tubing string sectional area.
Under conditions of identical critical erosion flow velocity, the internal diameter of tubing string is different, and the critical erosion flow of its correspondence also differs.Described face
One important parameter when boundary's erosion flow is the design of gas well string size, therefore, to assure that gas well maximum production or note gas production are wanted
Less than corresponding critical erosion flow, thus avoid tubing string generation erosion in process of production.
At present, the corrosion rate standard that China's oil industry uses is 0.076mm/a.Due to corrosion and the termination of erosion
Fruit is all to cause that tubing and casing wall thickness is thinning even bores a hole, and therefore can use for reference gas well tube corrosion speed standard 0.076mm/a and make
For the standard of erosion rate, if i.e. under a certain experiment erosion flow velocity, when the erosion rate of sample is 0.076mm/a, it is believed that
Flow velocity now is critical erosion flow velocity, and the flow of its correspondence is critical erosion flow.
In the present embodiment, described preset rules can be described gas well tube corrosion speed standard.Described based in advance
If rule determines initial criticality erosion rate and can be: determine that described initial criticality erosion rate is based on corrosion rate standard
0.076mm/a。
Certainly, the determination of described initial criticality erosion rate is not limited to foregoing description, and one of ordinary skill in the art are at this
Under the technical spirit enlightenment of application, it is also possible to make other change, but as long as its function realized and effect and the application phase
Same or similar, all should be covered by the application protection domain.
Step S16: if described initial erosion rate is identical with described initial criticality erosion rate or is close, then by described
Initial erosion rate is as the final critical erosion rate of described target gas well.
In the present embodiment, the initial erosion rate that described erosion experiment can be obtained and described initial criticality erosion
Speed compares, if described initial erosion rate initial understands that erosion rate is identical or is close with described, the most then and can be by
Described initial erosion rate is as the final critical erosion rate of described target gas well.
In one embodiment, if described initial erosion rate differs with described initial criticality erosion rate or connects
Closely, then repeat described erosion experiment, to described initial erosion rate identical with described initial criticality erosion rate or be close into
Only.Wherein, described initial erosion rate and described initial criticality erosion rate are close and can refer to that described initial erosion rate exists
Within described initial criticality erosion rate positive and negative 10%；Or within positive 50%, within negative 5% etc..Certainly, described positive and negative model
Enclosing value, the application does not make strict restriction at this, and it can require to wait according to different basic parameters and use and adapt to
The adjustment of property.
Wherein, described initial erosion rate and described initial criticality erosion rate differ or are close and include following two kinds
Situation:
When described initial erosion rate less than described initial criticality erosion rate the first preset range time, reduce described initially
Experiment erosion flow velocity, repeats described erosion experiment；
When described initial erosion rate more than described initial criticality erosion rate the second preset range time, improve described initially
Experiment erosion flow velocity, repeats described erosion experiment.
Wherein, described first preset range and the second preset range can require according to different basic parameters and use and enter
The adaptive adjustment of row, the application does not make concrete restriction at this.On the whole, described initial erosion rate is the least, accordingly,
When instructing design of string pipe, it is thus achieved that the security performance of tubing string the highest；Described initial erosion rate is the biggest, accordingly, instructs tubing string
During design, it is thus achieved that the economy of tubing string the best.
Step S18: determine described target gas according to the tubing string sectional area of described final critical erosion rate and target gas well
The critical erosion flow of well.
In the present embodiment, after determining described final critical erosion rate, cut according to the tubing string of described target gas well
Area, it may be determined that the critical erosion flow of described target gas well.Concrete, described final critical erosion rate and described tubing string
The critical erosion flow of the product the most described target gas well of sectional area.
The application embodiments, provides a kind of experimental technique determining gas well critical erosion flow, by target gas
The simulation of the basic parameter of well, carries out corresponding erosion experiment, in experimentation, using initial criticality erosion rate as comparing
Standard, determines the critical erosion rate of target gas well efficiently, and then obtains the critical erosion flow of target gas well, it is possible to for
Gas well design of string pipe proposes gas well erosion rate standard, draws critical erosion flow velocity based on this gas well standard, and then design is closed
The critical erosion flow of reason, plays optimal production capacity cost-effective in the reasonable scope, can improve the fortune of gas field and gas storage
Row benefit, has good Social and economic benef@.
Method based on the determination gas well critical erosion flow described in above-mentioned embodiment, the application also provides for one and determines
The device of gas well critical erosion flow.
Referring to Fig. 3, the described device determining gas well critical erosion flow may include that
Experiment parameter determines module 20, may be used for the basic parameter according to the target gas well got and determines that erosion is tested
Corresponding experiment parameter；Wherein, described basic parameter includes: tubing string parameter and operational factor；
Initial erosion rate determines module 22, may be used under the conditions of described experiment parameter, with initial experiment erosion stream
Speed carries out erosion experiment to laboratory sample, and after described erosion has been tested, obtains the weight change ginseng of described laboratory sample
Number, according to described weight running parameter and the erosion area of described laboratory sample, determines described target gas well based on preset algorithm
Initial erosion rate；
Judge module 24, may be used for determining initial criticality erosion rate based on preset rules, and judges described initial punching
Erosion speed is the most identical with described initial criticality erosion rate or is close；
Final critical erosion rate determines module 26, rushes with described initial criticality if may be used for described initial erosion rate
Erosion speed is identical or be close, then using described initial erosion rate as the final critical erosion rate of described target gas well；
Critical erosion flow determines module 28, for cutting according to the tubing string of described final critical erosion rate and target gas well
Area determines the critical erosion flow of described target gas well.
In the another embodiment of the described device determining gas well critical erosion flow, described tubing string parameter includes: pipe
Post material, wall thickness, external diameter；Operational factor includes: temperature, pressure, fluid parameter.
In the another embodiment of the described device determining gas well critical erosion flow, the initial punching of described target gas well
Erosion speed calculates according to following formula and determines:
In above formula, v1Representing described initial erosion rate, unit is m/a (rice is annual)；m0Represent that erosion experiment starts front reality
Testing the quality of sample, unit is kg (kilogram)；m1Representing that the mass unit of rear laboratory sample has been tested in erosion is kg (kilogram)；
ρ represents the density of described laboratory sample, and unit is kg/m3(kilogram every cubic metre)；S represents the erosion area of laboratory sample, single
Position is m2(square metre)；T represents erosion experimental period, and unit is a (year).
Determine disclosed in above-mentioned embodiment that the device of gas well critical erosion flow determines the critical erosion of gas well with the application
The method embodiment of flow is corresponding, it is possible to achieve the method embodiment of the determination gas well critical erosion flow of the application is also
Reach the technique effect of method embodiment.
Refer to Fig. 4 and Fig. 5, a kind of side determining the critical erosion rate of gas well that one embodiment of the application is provided
Method may include steps of.
Step S10: determine the experiment parameter that erosion experiment is corresponding according to the basic parameter of the target gas well got；Its
In, described basic parameter includes: tubing string parameter and operational factor；
Step S12: under the conditions of described experiment parameter, carries out erosion in fact with initial experiment erosion flow velocity to laboratory sample
Test, and after described erosion has been tested, obtain the weight running parameter of described laboratory sample, according to described weight running parameter
With the erosion area of described laboratory sample, determine the initial erosion rate of described target gas well based on preset algorithm；
Step S14: determine initial criticality erosion rate based on preset rules, and judge described initial erosion rate whether with
Described initial criticality erosion rate is identical or is close；
Step S16: if described initial erosion rate is identical with described initial criticality erosion rate or is close, then by described
Initial erosion rate is as the final critical erosion rate of described target gas well.
The described method determining the critical erosion rate of gas well is referred to the step of the method for described gas well critical erosion flow
Rapid S10 illustrates to step S16, and the application does not repeats them here.
Method based on the critical erosion rate of determination gas well described in above-mentioned embodiment, the application also provides for one and determines
The device of the critical erosion rate of gas well.
Referring to Fig. 6, the described device determining the critical erosion rate of gas well may include that
Experiment parameter determines module 20, may be used for the basic parameter according to the target gas well got and determines that erosion is tested
Corresponding experiment parameter；Wherein, described basic parameter includes: tubing string parameter and operational factor；
Initial erosion rate determines module 22, may be used under the conditions of described experiment parameter, with initial experiment erosion stream
Speed carries out erosion experiment to laboratory sample, and after described erosion has been tested, obtains the weight change ginseng of described laboratory sample
Number, according to described weight running parameter and the erosion area of described laboratory sample, determines described target gas well based on preset algorithm
Initial erosion rate；
Judge module 24, may be used for determining initial criticality erosion rate based on preset rules, and judges described initial punching
Erosion speed is the most identical with described initial criticality erosion rate or is close；
Final critical erosion rate determines module 26, rushes with described initial criticality if may be used for described initial erosion rate
Erosion speed is identical or be close, then using described initial erosion rate as the final critical erosion rate of described target gas well.
Determine disclosed in above-mentioned embodiment that the device of the critical erosion rate of gas well determines the critical erosion of gas well with the application
The speed embodiment of flow is corresponding, it is possible to achieve the method embodiment of the critical erosion rate of determination gas well of the application is also
Reach the technique effect of method embodiment.
Each embodiment above-mentioned in this specification all uses the mode gone forward one by one to describe, identical between each embodiment
Similar portion is cross-referenced, and what each embodiment stressed is and other embodiment differences.
The foregoing is only several embodiments of the invention, although the embodiment that disclosed herein as above, but institute
State content only to facilitate the embodiment that understands the present invention and use, be not intended to limit the present invention.Any institute of the present invention
Belong to those skilled in the art, on the premise of without departing from the spirit and scope that disclosed herein, can be at embodiment
And make any amendment and change in details in form, but the scope of patent protection of the present invention, still must be with claims
Book is defined in the range of standard.
Claims (12)
1. the method determining gas well critical erosion flow, it is characterised in that comprising:
Basic parameter according to the target gas well got determines the experiment parameter that erosion experiment is corresponding；Wherein, described basic ginseng
Number includes: tubing string parameter and operational factor；
Under the conditions of described experiment parameter, with initial experiment erosion flow velocity, laboratory sample carried out erosion experiment, and in described punching
After erosion experiment completes, obtain the weight running parameter of described laboratory sample, according to described weight running parameter and described experiment sample
The erosion area of product, determines the initial erosion rate of described target gas well based on preset algorithm；
Determine initial criticality erosion rate based on preset rules, and judge described initial erosion rate whether with described initial criticality
Erosion rate is identical or is close；
If described initial erosion rate is identical with described initial criticality erosion rate or is close, then by described initial erosion rate
Final critical erosion rate as described target gas well；
Tubing string sectional area according to described final critical erosion rate and target gas well determines the critical erosion of described target gas well
Flow.
2. the method for claim 1, it is characterised in that if described initial erosion rate and described initial criticality erosion speed
Rate differs or is close, then repeat described erosion experiment, to described initial erosion rate and described initial criticality erosion rate
Identical or till being close.
3. method as claimed in claim 2, it is characterised in that:
When described initial erosion rate is less than described initial criticality erosion rate the first preset range, reduce described initial experiment
Erosion flow velocity, repeats described erosion experiment；
When described initial erosion rate is more than described initial criticality erosion rate the second preset range, improve described initial experiment
Erosion flow velocity, repeats described erosion experiment.
4. method as claimed in claim 1 or 2, it is characterised in that
Described tubing string parameter includes: tubing string material, wall thickness, external diameter；
Operational factor includes: temperature, pressure, fluid parameter.
5. the method for claim 1, it is characterised in that described determine initial criticality erosion rate bag based on preset rules
Include: determine that described initial criticality erosion rate is 0.076mm/a based on corrosion rate standard.
6. the method for claim 1, it is characterised in that the initial erosion rate of described target gas well calculates according to following formula
Determine:
In above formula, v1Representing described initial erosion rate, unit is m/a (rice is annual)；m0Represent that erosion experiment tests sample before starting
The quality of product, unit is kg (kilogram)；m1Representing that the mass unit of rear laboratory sample has been tested in erosion is kg (kilogram)；ρ table
Showing the density of described laboratory sample, unit is kg/m3(kilogram every cubic metre)；S represents the erosion area of laboratory sample, and unit is
m2(square metre)；T represents erosion experimental period, and unit is a (year).
7. the device determining gas well critical erosion flow, it is characterised in that comprising:
Experiment parameter determines module, for determining, according to the basic parameter of the target gas well got, the experiment that erosion experiment is corresponding
Parameter；Wherein, described basic parameter includes: tubing string parameter and operational factor；
Initial erosion rate determines module, under the conditions of described experiment parameter, with initial experiment erosion flow velocity to experiment sample
Product carry out erosion experiment, and after described erosion has been tested, obtain the weight running parameter of described laboratory sample, according to described
The erosion area of weight running parameter and described laboratory sample, determines the initial erosion speed of described target gas well based on preset algorithm
Rate；
Whether judge module, for determining initial criticality erosion rate based on preset rules, and judge described initial erosion rate
Identical with described initial criticality erosion rate or be close；
Final critical erosion rate determines module, if identical with described initial criticality erosion rate for described initial erosion rate
Or be close, then using described initial erosion rate as the final critical erosion rate of described target gas well；
Critical erosion flow determines module, true for the tubing string sectional area according to described final critical erosion rate and target gas well
The critical erosion flow of fixed described target gas well.
8. device as claimed in claim 7, it is characterised in that
Described tubing string parameter includes: tubing string material, wall thickness, external diameter；
Operational factor includes: temperature, pressure, fluid parameter.
9. device as claimed in claim 7, it is characterised in that described determine initial criticality erosion rate bag based on preset rules
Include: determine that described initial criticality erosion rate is 0.076mm/a based on corrosion rate standard.
10. device as claimed in claim 7, it is characterised in that the initial erosion rate of described target gas well is according to following formula meter
Determine:
In above formula, v1Representing described initial erosion rate, unit is m/a (rice is annual)；m0Represent that erosion experiment tests sample before starting
The quality of product, unit is kg (kilogram)；m1Representing that the mass unit of rear laboratory sample has been tested in erosion is kg (kilogram)；ρ table
Showing the density of described laboratory sample, unit is kg/m3(kilogram every cubic metre)；S represents the erosion area of laboratory sample, and unit is
m2(square metre)；T represents erosion experimental period, and unit is a (year).
11. 1 kinds of methods determining the critical erosion rate of gas well, it is characterised in that comprising:
Basic parameter according to the target gas well got determines the experiment parameter that erosion experiment is corresponding；Wherein, described basic ginseng
Number includes: tubing string parameter and operational factor；
Under the conditions of described experiment parameter, with initial experiment erosion flow velocity, laboratory sample carried out erosion experiment, and in described punching
After erosion experiment completes, obtain the weight running parameter of described laboratory sample, according to described weight running parameter and described experiment sample
The erosion area of product, determines the initial erosion rate of described target gas well based on preset algorithm；
Determine initial criticality erosion rate based on preset rules, and judge described initial erosion rate whether with described initial criticality
Erosion rate is identical or is close；
If described initial erosion rate is identical with described initial criticality erosion rate or is close, then by described initial erosion rate
Final critical erosion rate as described target gas well.
12. 1 kinds of devices determining the critical erosion rate of gas well, it is characterised in that comprising:
Experiment parameter determines module, for determining, according to the basic parameter of the target gas well got, the experiment that erosion experiment is corresponding
Parameter；Wherein, described basic parameter includes: tubing string parameter and operational factor；
Initial erosion rate determines module, under the conditions of described experiment parameter, with initial experiment erosion flow velocity to experiment sample
Product carry out erosion experiment, and after described erosion has been tested, obtain the weight running parameter of described laboratory sample, according to described
The erosion area of weight running parameter and described laboratory sample, determines the initial erosion speed of described target gas well based on preset algorithm
Rate；
Whether judge module, for determining initial criticality erosion rate based on preset rules, and judge described initial erosion rate
Identical with described initial criticality erosion rate or be close；
Final critical erosion rate determines module, if identical with described initial criticality erosion rate for described initial erosion rate
Or be close, then using described initial erosion rate as the final critical erosion rate of described target gas well.
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| CN107991386A (en) * | 2017-10-12 | 2018-05-04 | 中国石油天然气股份有限公司 | The definite method and apparatus of elbow erosion rate |
| CN108507893A (en) * | 2018-03-28 | 2018-09-07 | 长江大学 | Erosion device and sample erosive wear speed measurement equipment |
| CN109344534A (en) * | 2018-10-24 | 2019-02-15 | 中国石油天然气股份有限公司 | The critical erosion flow velocity of injection-production column jacket determines method and device |
| CN109900577A (en) * | 2019-03-21 | 2019-06-18 | 湘潭大学 | A kind of detection method of thermal barrier coating high temperature erosion |
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| CN111749674A (en) * | 2019-03-11 | 2020-10-09 | 中国石油天然气股份有限公司 | Method and test device for testing critical erosion flow of gas well on site |
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| CN107941906A (en) * | 2017-10-12 | 2018-04-20 | 中国石油天然气股份有限公司 | The definite system and method for erosion rate |
| CN107991386A (en) * | 2017-10-12 | 2018-05-04 | 中国石油天然气股份有限公司 | The definite method and apparatus of elbow erosion rate |
| CN108507893A (en) * | 2018-03-28 | 2018-09-07 | 长江大学 | Erosion device and sample erosive wear speed measurement equipment |
| CN108507893B (en) * | 2018-03-28 | 2021-04-27 | 长江大学 | Erosion device and sample erosion wear rate measuring apparatus |
| CN109344534A (en) * | 2018-10-24 | 2019-02-15 | 中国石油天然气股份有限公司 | The critical erosion flow velocity of injection-production column jacket determines method and device |
| CN109344534B (en) * | 2018-10-24 | 2022-02-01 | 中国石油天然气股份有限公司 | Injection-production string critical erosion flow rate determination method and device |
| CN111199082A (en) * | 2018-10-31 | 2020-05-26 | 中国石油天然气股份有限公司 | Pipeline erosion rate obtaining method |
| CN111199082B (en) * | 2018-10-31 | 2022-10-04 | 中国石油天然气股份有限公司 | Pipeline erosion rate obtaining method |
| CN111749674A (en) * | 2019-03-11 | 2020-10-09 | 中国石油天然气股份有限公司 | Method and test device for testing critical erosion flow of gas well on site |
| CN111749674B (en) * | 2019-03-11 | 2023-06-30 | 中国石油天然气股份有限公司 | Method and test device for field test of critical erosion flow of gas well |
| CN109900577A (en) * | 2019-03-21 | 2019-06-18 | 湘潭大学 | A kind of detection method of thermal barrier coating high temperature erosion |
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