CN108279173A - A kind of casing anti-shear performance evaluation method - Google Patents
A kind of casing anti-shear performance evaluation method Download PDFInfo
- Publication number
- CN108279173A CN108279173A CN201810002310.5A CN201810002310A CN108279173A CN 108279173 A CN108279173 A CN 108279173A CN 201810002310 A CN201810002310 A CN 201810002310A CN 108279173 A CN108279173 A CN 108279173A
- Authority
- CN
- China
- Prior art keywords
- casing
- shear
- shearing
- type load
- reservoir
- 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.)
- Granted
Links
Classifications
-
- 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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of casing anti-shear performance evaluation methods, the anti-shear performance of casing is determined using the method for actual loading test of the casing string under shear-type load operating mode, according to the change of live reservoir volume transformation process shear-type load spacing, establish the relational expression that casing changes under different shear-type load operating modes with wall thickness, change the anti-shear performance characteristic pattern that shearing spacing λ determines different size casing, the interfloor distance λ to change according to reservoir lithology1With maximum shear load, according to shearing spacing λ1Straight line and anti-shear performance curve existing for intersection point judge casing anti-shear ability.The present invention forms a kind of casing anti-shear performance evaluation method from casing in conjunction with in-kind simulation test result, and technical support is provided for the selection of unconventionaloil pool casing.
Description
Technical field
The invention belongs to be drilled well technical field, and in particular to a kind of casing anti-shear performance evaluation method.
Background technology
Domestic Southwest Oil shale gas well complexity fracturing process middle sleeve deformation rate reaches 40% or more, by playing lead stamp
And the methods of multiple feeler caliper monitoring result shows that asymmetry, domestic and international experts and scholars' Primary Study is presented in casing radial deformation
After think that the shearing of external stratum is one of the main reason for causing casing deformation, and downhole tool tripping in normally whether be to judge set
The main means whether deformed managed.Up to now it is not yet found that feasible reservoir hunch Deformation Theory computational methods, existing to comment
The method of valence casing anti-shear ability is mainly method for numerical simulation, it is intended to determine external shear-type load and casing inner diameter deformation quantity
Between relationship, this method lack actual loading test verification and error it is larger.Therefore, how to be tested by in-kind simulation and determine difference
Gauge cannula anti-shear performance collection of illustrative plates forms casing anti-shear performance evaluation method, for live shale gas well reservoir volume transformation
It is selected with casing and technical support is provided, it appears is particularly important.
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of casing shearing resistance
Method of evaluating performance is cut, the anti-shear performance of casing is determined based on the method for actual loading test, it is contemplated that live reservoir volume transformation
The change of process shear-type load spacing forms characteristic spectrum of the casing anti-shear ability with shearing spacing changing rule, for scene
Casing, which is selected, provides technical support.
The present invention uses following technical scheme：
A kind of casing anti-shear performance evaluation method, using the method for actual loading test of the casing string under shear-type load operating mode
The anti-shear performance for determining casing establishes casing not according to the change of live reservoir volume transformation process shear-type load spacing
With the relational expression changed with wall thickness under shear-type load operating mode, change the anti-shear performance that shearing spacing λ determines different size casing
Characteristic pattern, the interfloor distance λ to be changed according to reservoir lithology1With maximum shear load, according to shearing spacing λ1Straight line with it is anti-
Intersection point existing for cutting performance curve judges casing anti-shear ability.
Further, include the following steps：
S1, in-kind simulation experiment of the casing string under shear-type load operating mode is carried out；
S2, shear-deformable casing is splitted in an axial direction, measure the wall thickness at maximum distortion position, obtain casing wall thickness maximum and change
Variable；
S3, the relationship that shear-type load and casing inner diameter shear-deformable iu are determined on the basis of step S1 and S2
S4, according to the step S3 shear-type load determined and the shear-deformable relationship of casing inner diameter, change shearing spacing λ and determine not
The anti-shear performance characteristic pattern of same specification casing；
S5, it is reconnoitred according to field geology and log data, determines the interfloor distance λ that reservoir lithology changes1And maximum
Shear load, according to internal diameter iu before casing deformationoRegion I and II are divided with downhole tool maximum outside diameter before casing deformation, according to
Shearing spacing is λ1Straight line there are intersection points to judge casing anti-shear ability with anti-shear performance curve.
In the experiment of step S1 in-kind simulations, casing includes cannula tip effect of constraint value range area, casing successively from left to right
Shear-type load applies range area, cannula tip effect of constraint value range area and casing radial loaded hydraulic cylinder, both sides cannula tip
The shearing loading position in effect of constraint value range area and threshold value L1It is all higher than 8D, D is the outer diameter of casing, and shearing clamp is arranged
Apply range area in reservoir hunch load, by changing the shearing spacing λ of shearing clamp, determines casing string shearing outer diameter deformation ou
With shear-type load F changing rule characteristic patterns.
In step S2, casing wall thickness maximum change amount △ t specifically calculate as follows：
△ t=t-t1
Wherein, t is casing initial wall thickness, t1For the wall thickness at maximum distortion position.
In step S3, by the anti-shearing deformation behaviour figure of casing, fitting obtains the relationship of shear-type load F and outer diameter ou deformations
Curve, by step S2 is obtained, casing wall thickness maximum change amount △ t substitute into can be obtained shear-type load F and casing inner diameter deformation
Relational expression iu=iu (F, t).
It is 0~40D to shear spacing λ, and D is the outer diameter of casing.
In step S5, when intersection point is located at the areas I, reservoir hunch ID distortion>iuo-iue, casing anti-shear ability is weak；
When intersection point is located at the areas II, reservoir hunch ID distortion<iuo-iue, casing anti-shear ability meets working condition requirement.
Compared with prior art, the present invention at least has the advantages that：
A kind of casing anti-shear performance evaluation method of the present invention, it is contemplated that shale gas well reservoir volume transformation process middle sleeve
Shear-deformable rate covers loss rate far above conventional oil gas well, and the method using actual loading test of the casing string under shear-type load operating mode is true
Determine the anti-shear performance of casing, it is contemplated that the change of live reservoir volume transformation process shear-type load spacing changes shearing spacing λ
The anti-shear performance characteristic pattern for determining different size casing, the interfloor distance λ to be changed according to reservoir lithology1And maximum shear
Load, according to shearing spacing λ1Straight line and anti-shear performance curve existing for intersection point judge casing anti-shear ability, it is proposed that
Full and accurate feasible casing anti-shear ability evaluation method in kind, forms different size casing anti-shear performance characteristic pattern, is existing
Field unconventionaloil pool casing column fining, which is selected, provides technical support.
Further, reservoir hunch deformation is splitted in an axial direction, is measured the wall thickness at maximum distortion position, is obtained casing wall thickness
Maximum change amount determines the relationship of shear-type load and the shear-deformable iu of casing inner diameter, specifies that shale gas well casing is anti-shearing
Performance.
Further, shale gas well occurs shear-deformable judgment method with casing and is that downhole tool cannot be suitable at this stage
Sharp tripping in, i.e.,：The outer diameter of tripping in tool is more than the inner diameter values after casing deformation, and the purpose of this method is just to determine that different shearings carry
Casing inner diameter deformation under lotus operating mode, to determine the outer diameter permissible value of tripping in tool.Or determining the outer of tripping in tool
When diameter, to make the tool normally casing into, by the preferred casing grade of the relational expression and wall thickness.
Further, technical staff judges casing anti-shear ability, simple, intuitive, conducive to promoting the use of according to intersection point.
In conclusion the present invention forms a kind of casing shearing resistance from casing in conjunction with in-kind simulation test result
Method of evaluating performance is cut, technical support is provided for the selection of unconventionaloil pool casing.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Description of the drawings
Fig. 1 is that casing anti-shear performance evaluation method loads schematic diagram；
Fig. 2 is shear-type load and outer diameter deformation of P110 139.7 × 9.17mm of the Φ casings under different shearing spacing operating modes
Graph of relation；
Fig. 3 is 139.7 different wall thickness operating mode setting of casing anti-shear performance characteristic patterns of P110 casings Φ.
Wherein：1. cannula tip effect of constraint value range area；2. reservoir hunch load applies range area；3. shearing clamp；4.
Casing radial loaded hydraulic cylinder；5. casing wall thickness 9.17mm anti-shear performance curves；6. casing wall thickness 10.54mm anti-shear performances
Curve；7. casing wall thickness 11.1mm anti-shear performance curves.
Specific implementation mode
Prior art method raising grade of steel (V140) the increase wall thickness that mainly use is attempted (>15mm), economic throwing is caused
The significant wastage entered, and cannot suit the remedy to the case.A kind of casing anti-shear performance evaluation method of the present invention, is tested by in-kind simulation
Method determine the anti-shear performance of different specification size casing, and then the casings formed under different shearing spacing operating modes are anti-shearing
Performance variation law, establishes the relational expression that casing changes under different shear-type load operating modes with wall thickness, and synthesis forms different operating modes
Under casing anti-shear performance characteristic pattern, provide technical support for live casing selection, include the following steps：
S1, carry out casing string under shear-type load operating mode in-kind simulation experiment, as shown in Figure 1, casing from left to right according to
Secondary includes cannula tip effect of constraint value range area 1, reservoir hunch load application range area 2, cannula tip effect of constraint value range area 1
And casing radial loaded hydraulic cylinder 4, it is based on Saint Venant's principle, considers that the coverage of end restraint, cannula tip constrain shadow
Ring the shearing loading position and threshold value L in range area 118D (D is the outer diameter of casing) is should be greater than, the setting of shearing clamp 3 is existed
Reservoir hunch load applies range area 2, changes the shearing spacing λ of shearing clamp 3, determines casing string shearing outer diameter deformation ou and cuts
Cut load F changing rule characteristic patterns；
Become with radial as shown in Fig. 2, obtaining casing anti-shear performance using shearing in-kind simulation experimental rig shown in FIG. 1
The correspondence of shape records loading curve by the method that in-kind simulation is tested, the unloading curve part in loading curve is gone
Fall, determines casing string shearing outer diameter deformation ou and shear-type load F changing rule characteristic patterns.
S2, reservoir hunch deformation is splitted in an axial direction, measure the wall thickness t at maximum distortion position1, with casing initial wall thickness t
It compares, determines casing wall thickness maximum change amount △ t=t-t1；
S3, the relationship iu=iu that shear-type load and casing inner diameter shear-deformable iu are determined on the basis of step S1 and S2
(F, t)；
By the anti-shearing deformation behaviour figure of casing, fitting obtains the relation curve of shear-type load F and outer diameter ou deformations, and covers
The relationship of bore and outer diameter is △ t=t-t1, substitute into the relational expression iu=that can be obtained shear-type load F and casing inner diameter deformation
Iu (F, t).
S4, change shearing spacing λ (0, D, 2D, 3D, 4D, 5D, 10D, 15D, 20D, 25D, 30D, 35D, 40D), determine not
The anti-shear performance characteristic pattern of same specification casing；
As shown in Fig. 2, similar with step S1, it is only necessary to change the spacing between two shear plates, you can obtain corresponding feature
Figure.
Casing wall thickness 9.17mm anti-shear performances curve 5, casing wall thickness 10.54mm anti-shear performances curve 6 and casing wall
Thick 11.1mm anti-shear performances curve 7 is as shown in Figure 3, it is contemplated that live maximum shear load can obtain roughly, in order to more preferable
It is corresponding with field working conditions, establish it is shown in Fig. 3 under certain shear-type load operating mode, casing inner diameter deformation quantity with shearing spacing
Relation curve the preferred of casing may be implemented in conjunction with the outer diameter of tripping in tool；
S5, oil gas field scene casing anti-shear performance evaluation method；
It is reconnoitred according to field geology and log data, determines the interfloor distance λ that reservoir lithology changes1And maximum shear
Load, according to internal diameter iu before casing deformationoRegion I and II are divided with downhole tool maximum outside diameter before casing deformation, according to shearing
Spacing is λ1Straight line there are intersection points to judge casing anti-shear ability with anti-shear performance curve；
When intersection point is located at the areas I, reservoir hunch ID distortion>iuo-iue, casing anti-shear ability is weak；
When intersection point is located at the areas II, reservoir hunch ID distortion<iuo-iue, casing anti-shear ability meets working condition requirement.
Embodiment
Illustrate casing anti-shear performance evaluation method by taking P110 grade of steel Φ 139.7mm casings as an example.
It is reconnoitred according to field geology and log data, determines the interfloor distance λ that reservoir lithology changes1And maximum shear
Load determines that casing anti-shear performance characteristic pattern shown in Fig. 3, shearing spacing are λ by actual loading test method1Straight line with it is anti-
There are intersection points for cutting performance curve：P1、P2And P3。
As intersection point P1When positioned at the areas I, reservoir hunch ID distortion>iuo-iue, casing anti-shear ability is weak, is unsatisfactory for operating mode
Demand；
As intersection point P2And P3When positioned at the areas II, reservoir hunch ID distortion<iuo-iue, casing anti-shear ability meets operating mode
It is required that while based on the considerations of economic cost, it is excellent to select the casing of wall thickness relatively thin (10.54mm).
This method can accurately describe anti-shear performance of the casing under different loads operating mode, select and close for Oil Field
The casing offer technical support of suitable grade of steel, wall thickness.The performance realized for specific well conditions is preferred, suitably reduces whole uses
Cost input caused by the big wall thickness casing of Hi-grade steel.
The above content is merely illustrative of the invention's technical idea, and protection scope of the present invention cannot be limited with this, every to press
According to technological thought proposed by the present invention, any change done on the basis of technical solution each falls within claims of the present invention
Protection domain within.
Claims (7)
1. a kind of casing anti-shear performance evaluation method, which is characterized in that use material object of the casing string under shear-type load operating mode
The method of experiment determines the anti-shear performance of casing, according to the change of live reservoir volume transformation process shear-type load spacing, builds
The relational expression that vertical casing changes under different shear-type load operating modes with wall thickness changes shearing spacing λ and determines different size casing
Anti-shear performance characteristic pattern, the interfloor distance λ to be changed according to reservoir lithology1With maximum shear load, according to shearing spacing λ1
Straight line and anti-shear performance curve existing for intersection point judge casing anti-shear ability.
2. a kind of casing anti-shear performance evaluation method according to claim 1, which is characterized in that include the following steps：
S1, in-kind simulation experiment of the casing string under shear-type load operating mode is carried out；
S2, shear-deformable casing is splitted in an axial direction, measure the wall thickness at maximum distortion position, obtain casing wall thickness maximum change
Amount；
S3, the relationship that shear-type load and casing inner diameter shear-deformable iu are determined on the basis of step S1 and S2；
S4, according to the step S3 shear-type load determined and the shear-deformable relationship of casing inner diameter, change shearing spacing λ and determine different rule
The anti-shear performance characteristic pattern of rule pipe；
S5, it is reconnoitred according to field geology and log data, determines the interfloor distance λ that reservoir lithology changes1With maximum shear lotus
It carries, according to internal diameter iu before casing deformationoRegion I and II are divided with downhole tool maximum outside diameter before casing deformation, according between shearing
Away from for λ1Straight line there are intersection points to judge casing anti-shear ability with anti-shear performance curve.
3. a kind of casing anti-shear performance evaluation method according to claim 2, which is characterized in that step S1 in-kind simulations
In experiment, casing includes cannula tip effect of constraint value range area, reservoir hunch load application range area, casing successively from left to right
End restraint coverage area and casing radial loaded hydraulic cylinder, the shearing load in both sides cannula tip effect of constraint value range area
Position and threshold value L1It is all higher than 8D, D is the outer diameter of casing, and shearing clamp setting is applied range in reservoir hunch load
Area determines that casing string shearing outer diameter deformation ou and shear-type load F changing rules are special by changing the shearing spacing λ of shearing clamp
Sign figure.
4. a kind of casing anti-shear performance evaluation method according to claim 2, which is characterized in that in step S2, casing
Wall thickness maximum change amount △ t specifically calculate as follows：
△ t=t-t1
Wherein, t is casing initial wall thickness, t1For the wall thickness at maximum distortion position.
5. a kind of casing anti-shear performance evaluation method according to claim 2, which is characterized in that in step S3, pass through
The anti-shearing deformation behaviour figure of casing, fitting obtain the relation curve of shear-type load F and outer diameter ou deformations, the set that step S2 is obtained
Thickness of pipe wall maximum change amount △ t substitute into the relational expression iu=iu (F, t) that can be obtained shear-type load F and casing inner diameter deformation.
6. a kind of casing anti-shear performance evaluation method according to claim 2, which is characterized in that shearing spacing λ is 0~
40D, D are the outer diameter of casing.
7. a kind of casing anti-shear performance evaluation method according to claim 2, which is characterized in that in step S5, work as friendship
When point is located at the areas I, reservoir hunch ID distortion>iuo-iue, casing anti-shear ability is weak；
When intersection point is located at the areas II, reservoir hunch ID distortion<iuo-iue, casing anti-shear ability meets working condition requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810002310.5A CN108279173B (en) | 2018-01-02 | 2018-01-02 | Method for evaluating anti-shearing performance of casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810002310.5A CN108279173B (en) | 2018-01-02 | 2018-01-02 | Method for evaluating anti-shearing performance of casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108279173A true CN108279173A (en) | 2018-07-13 |
| CN108279173B CN108279173B (en) | 2020-08-07 |
Family
ID=62801245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810002310.5A Active CN108279173B (en) | 2018-01-02 | 2018-01-02 | Method for evaluating anti-shearing performance of casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108279173B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110717284A (en) * | 2019-08-16 | 2020-01-21 | 中国石油天然气集团有限公司 | Analysis and test evaluation method for shear-resistant bearing capacity of casing |
| CN111622685A (en) * | 2020-05-22 | 2020-09-04 | 中国石油天然气集团有限公司 | Anti-shearing special-shaped section aluminum alloy casing structure for oil-gas well and manufacturing method |
| CN111751216A (en) * | 2019-03-29 | 2020-10-09 | 中国石油天然气股份有限公司 | Casing damage simulation experiment device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598529A (en) * | 2004-08-13 | 2005-03-23 | 大庆油田有限责任公司 | Stress sheath demage predicting method |
| CN101968414A (en) * | 2010-08-31 | 2011-02-09 | 煤炭科学研究总院重庆研究院 | Method and system for analyzing deformation damage safety of ground well casing |
| CN106326667A (en) * | 2016-08-31 | 2017-01-11 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Well completion packer slip section casing ultimate bearing capacity calculation model and method |
| CN106529092A (en) * | 2016-12-14 | 2017-03-22 | 天津钢管集团股份有限公司 | Finite element calculating method of shear deformation force of well casing |
-
2018
- 2018-01-02 CN CN201810002310.5A patent/CN108279173B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598529A (en) * | 2004-08-13 | 2005-03-23 | 大庆油田有限责任公司 | Stress sheath demage predicting method |
| CN101968414A (en) * | 2010-08-31 | 2011-02-09 | 煤炭科学研究总院重庆研究院 | Method and system for analyzing deformation damage safety of ground well casing |
| CN106326667A (en) * | 2016-08-31 | 2017-01-11 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Well completion packer slip section casing ultimate bearing capacity calculation model and method |
| CN106529092A (en) * | 2016-12-14 | 2017-03-22 | 天津钢管集团股份有限公司 | Finite element calculating method of shear deformation force of well casing |
Non-Patent Citations (7)
| Title |
|---|
| CUI YUEMING: "Finite Element Simulation of Casing Shearing Impairment in Different Cementing Method", 《CSCANDADA》 * |
| 孙新 等: "非均匀载荷下稀油井套管的抗外挤强度研究", 《石油管材与仪器》 * |
| 孙海涛 等: "地面钻井套管耦合变形作用机理", 《煤炭学报》 * |
| 焦炜 等: "P110钢级φ139.7mm×10.54mm高抗挤套管抗挤毁性能分析及挤毁强度预测", 《焊管》 * |
| 王建军 等: "稠油热采井套管柱应变设计方法", 《中国石油大学学报(自然科学版）》 * |
| 艾池 等: "延缓大庆油田标准层套损的套管优选", 《石油钻探技术》 * |
| 高利军 等: "页岩储层剪切套损的数值模拟及固井对策研究", 《石油机械》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751216A (en) * | 2019-03-29 | 2020-10-09 | 中国石油天然气股份有限公司 | Casing damage simulation experiment device |
| CN110717284A (en) * | 2019-08-16 | 2020-01-21 | 中国石油天然气集团有限公司 | Analysis and test evaluation method for shear-resistant bearing capacity of casing |
| CN111622685A (en) * | 2020-05-22 | 2020-09-04 | 中国石油天然气集团有限公司 | Anti-shearing special-shaped section aluminum alloy casing structure for oil-gas well and manufacturing method |
| CN111622685B (en) * | 2020-05-22 | 2022-03-29 | 中国石油天然气集团有限公司 | Anti-shearing special-shaped section aluminum alloy casing structure for oil-gas well and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108279173B (en) | 2020-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11542801B2 (en) | Optimized design method for temporary blocking agent to promote uniform expansion of fractures produced by fracturing in horizontal wells | |
| CN110644980B (en) | Comprehensive classification evaluation method for ultra-low permeability oil reservoir | |
| CN107563027B (en) | For analyzing the WELL TEST INTERPRETATION MODEL and method of more fracture-cavity units cascaded structures | |
| Stille et al. | Classification as a tool in rock engineering | |
| WO2016192077A1 (en) | Method for establishing and solving numerical well-testing model of horizontal well for tight gas hydraulic fracturing | |
| CN108279173A (en) | A kind of casing anti-shear performance evaluation method | |
| CN106150485B (en) | A kind of drilling well leakage forecasting system based on digital rock mass | |
| US20220207689A1 (en) | Wear data quantification for well tools | |
| CN110656915B (en) | Shale gas multi-section fracturing horizontal well multi-working-system productivity prediction method | |
| KR20180026842A (en) | Method for decline curve analysis according to cumulative production incline rate in unconventional gas field | |
| Spaggiari et al. | Fatigue life prediction of notched components: a comparison between the theory of critical distance and the classical stress-gradient approach | |
| Boah et al. | Decline curve analysis and production forecast studies for oil well performance prediction: a case study of reservoir X | |
| CN113445988A (en) | Method for evaluating productivity of gas well of low-permeability carbonate rock gas reservoir | |
| Zhang et al. | Investigation of water-flow fracture zone height in fully mechanized cave mining beneath thick alluvium | |
| CN109751038A (en) | A kind of method of quantitative assessment oil/gas well wellbore integrity | |
| CN106150484B (en) | A kind of drilling well leakage prediction technique based on digital rock mass | |
| CN116717224A (en) | Fracturing productivity prediction method for complex fracture network of hypotonic tight reservoir | |
| McLean et al. | Impact of cold water injection on geothermal pressure transient analysis: A reservoir modelling assessment | |
| CN109339760B (en) | Horizontal well section multi-cluster fracturing fracture number diagnosis method | |
| Soong et al. | Integration of casing wear in casing design and stress analysis workflow | |
| Mohaghegh et al. | Predicting well-stimulation results in a gas-storage field in the absence of reservoir data with neural networks | |
| Nolte et al. | Fracture design and validation with uncertainty and model limitations | |
| Irawan et al. | Effect of wear on the burst strength of l-80 steel casing | |
| CN107133880B (en) | Method for estimating oil drainage area of development well | |
| Terminiello et al. | Quantifying the eur impact associated to drawdown management strategies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |