CN207586208U - Nearly well band temporarily blocks up simulating lab test device - Google Patents
Nearly well band temporarily blocks up simulating lab test device Download PDFInfo
- Publication number
- CN207586208U CN207586208U CN201721698512.5U CN201721698512U CN207586208U CN 207586208 U CN207586208 U CN 207586208U CN 201721698512 U CN201721698512 U CN 201721698512U CN 207586208 U CN207586208 U CN 207586208U
- Authority
- CN
- China
- Prior art keywords
- branch
- vertical bore
- nearly well
- lab test
- test device
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model is related to nearly well bands temporarily to block up simulating lab test device, including experiment end and information collection end, it tests end and includes injection main body and subject, subject includes vertical bore and at least one branch, vertical bore lower sides are equipped at least one stub interface, the side wall of branch is equipped with simulation borehole and simulation fracture, information collection end are connect with the sensor being arranged in subject.Nearly well band temporarily blocks up simulating lab test method and is temporarily blocked up in simulating lab test device applied to nearly well band.The nearly well temporarily block up simulating lab test device can real simulation difference borehole and corresponding crack situation, temporarily block up process so as to simulate nearly well, effectively instruct Field design, improve construction effect.Use information collection terminal gathered data, credible result degree is high, without relying on field experience again, improving practical plugging effect and blocking quality.
Description
Technical field
The utility model is related to oil fracturing fields more particularly to nearly well band temporarily to block up simulating lab test device.
Background technology
At present, temporarily temporarily stifled fracturing technique is new for stifled pressure break, Changqing oilfields dynamic multi-level for Schlumberger broadband pressure break, Sichuan shunting
Grain husk, principle are the advance perforations of big section, take general combined pressure, pass through in transformation process similar to Limited entry fracturing and stifled borehole technology
Temporarily stifled material realizes that nearly well band natural selection blocks, and improves longitudinal reservoir interlayer transformation validity.The technology can not only be attempted
Solve the problems, such as fine and close thin interbed pressure break, while to straight well refracturing, horizontal well refracturing, the more shower pore pressures of horizontal well in segments
Splitting has reference.
At present, determining no correlation means of the technical matters parameter, rely primarily on field experience, and crack diversion agent blocks
Merit rating technology relatively lags behind, and mostly using single tube or parallel two-tube rock core or sandpack column flowing simulated experiment device is qualitative comments
Valency diversion agent shut-off capacity, but exist can not simulation fracture condition, and because injection problem cannot simulate granular pattern, fibrous type turn to
The problems such as agent blocks.
Utility model content
To solve the above-mentioned problems, the utility model provides nearly well band and temporarily blocks up simulating lab test device and method, can
The nearly well band dynamic of real simulation temporarily blocks up process, diverting agent sealing characteristics different under the conditions of stratum is evaluated, without relying on again
Field experience improves practical plugging effect and blocks quality.
The technical solution of the utility model is：Nearly well band temporarily blocks up simulating lab test device, is adopted including experiment end and information
Collect end, experiment end includes injection main body and subject, and injection main body is connect by pipeline with subject, and subject includes
Vertical bore and at least one branch, vertical bore lower sides are equipped at least one stub interface, and one end of branch passes through
Stub interface is detachably connected with vertical bore, and the side wall of branch is equipped with simulation borehole and simulation fracture, information collection end with
The sensor connection being arranged in subject.
The subject further include it is at least one dead stifled, it is dead it is stifled be detachably connected by stub interface and vertical bore,
Dead stifled and branch quantity and the quantity equal to stub interface.
The simulation borehole is uniformly distributed along the extension of branch's other end, and is cylindrical orifice, and a diameter of 1-2cm is long
It spends for 5-10cm, simulation fracture is distributed along branch's side wall, and parallel with the axial direction of branch, and crack is wedge structure, and width is
0.2-2cm, length 20-50cm.
The axial direction of the branch and vertical bore it is axially vertical, the angle between contiguous branch is 0 ° -360 °, vertical well
A diameter of 38.1mm of cylinder.
The sensor is multiple, respectively positioned at vertical bore inside upper part, branch and vertical bore junction, artillery simulators
At eye and at simulation fracture.
The injection main body includes piston container, displacement pump and safety valve, and one end and the displacement pump of piston container connect, living
The other end of plug container is connect with safety valve, and the other end of safety valve is connected with the diverting agent entrance of vertical bore.
Agitating device is equipped in the piston container.
The vertical bore is equipped with pressure-display device.
The subject everywhere include vertical bore top, branch and vertical bore junction, simulation borehole at and mould
Intend at crack, information collection end acquisition subject temperature everywhere changes with time relationship and pressure changes with time pass
System.
The beneficial effects of the utility model are：
1. the nearly well temporarily block up simulating lab test device and method can real simulation difference borehole and corresponding crack situation,
Process is temporarily blocked up so as to simulate nearly well, not only can boosting temporarily be blocked up with each branch of accurate recording, but also it is suitable to record branch's boosting
Sequence effectively instructs Field design, improves construction effect.The nearly well temporarily blocks up simulating lab test apparatus structure novelty, operation
Safety, simple, high degree of automation, use information collection terminal gathered data, credible result degree height, without again by scene warp
It tests, improve practical plugging effect and blocks quality.
2. multiple ginsengs such as different fracture apertures, fracture length, borehole diameter, hole length can be adjusted in experimentation
Number optimizes broadband pressure break（Temporarily stifled pressure break, dynamic multi-level temporarily block up pressure break for shunting）Parameters of construction technology, so as to instruct site operation,
Ensure fracturing effect.It is arranged between each branch with 0 ° -360 ° a variety of phase angles, according to experiment purpose, determines numbers of branches（1-
5）, inapplicable branch is laid down, changes into and extremely blocks up, true vertical bore perforation holes and crack are simulated with equal proportion, are carried
The high confidence level of experimental result.
3. according to realistic well condition, if selected use multiple branches, under the action of displacement pump, diverting agent is started to work,
By the simulation fracture in each branch, it can intuitively observe diverting agent flowing and block situation, more intuitively, in combination with letter
Breath collection terminal can intuitively show broadband pressure break（Temporarily stifled pressure break, dynamic multi-level temporarily block up pressure break for shunting）Envelope during practice of construction
Stifled process.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the utility model structure diagram.
In figure, 1. information collection ends, 2. vertical bores, 3. branches, 4. stub interfaces, 5. simulation boreholes, 6. simulation fractures,
7. dead stifled, 8. piston containers, 9. displacements pump, 10. safety valves, 11. pressure-display devices.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that described embodiment is only the part of the embodiment rather than whole of the utility model
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower all other embodiments obtained, shall fall within the protection scope of the present invention.
Embodiment one：
As shown in Figure 1, nearly well band temporarily blocks up simulating lab test device, including experiment end and information collection end 1, experiment end packet
Injection main body and subject are included, injection main body is connect by pipeline with subject, and subject is including vertical bore 2 and extremely
A few branch 3,2 lower sides of vertical bore are equipped at least one stub interface 4, and one end of branch 3 passes through stub interface 4
It is detachably connected with vertical bore 2, the side wall of branch 3 is equipped with simulation borehole 5 and simulation fracture 6, information collection end 1 and setting
Sensor connection in subject.
When needing simulated experiment, by pre-assigned diverting agent merging injection main body, diverting agent by inject main body into
Enter into vertical bore 2, entered in branch 3 by vertical bore 2, eventually entered into simulation borehole 5 and simulation fracture 6, this
Information collection end 1 can acquire experimental data by sensor in the process.
Different diverting agent formulas, particle diameter distribution, proportioning, dosage size, slug design, note can be adjusted in experimentation
Enter the parameters such as speed, using the experimental data after temporarily blocking up as standard, such as：Boosting amplitude and each branch 3 boosting sequence etc., optimization
Broadband pressure break（Temporarily stifled pressure break, dynamic multi-level temporarily block up pressure break for shunting）Parameters of construction technology so as to instruct site operation, ensures pressure break
Effect.
The nearly well temporarily blocks up simulating lab test device and is equipped with multiple branches 3, can real simulation difference borehole and crack feelings
Condition temporarily blocks up process so as to simulate nearly well, and the various data in accurate recording experimentation effectively instruct Field design, carry
High construction effect.Especially for the diversion agents indoor moveable simulated injection such as granular pattern, fibrous type it is difficult the problem of understanding is provided
Approach certainly can be also used for optimization dynamic multi-level and temporarily block up fracturing technology parameter, determines that diverting agent particle diameter distribution, mechanical fraction are dense
Degree, dosage and slug design etc..The nearly well temporarily blocks up simulating lab test apparatus structure novelty, safe operation, simple, automation journey
Degree is high, 1 gathered data of use information collection terminal, and credible result degree is high, without relying on field experience again, improves practical plugging effect
With closure quality.
Embodiment two：
As shown in Figure 1, the subject further includes at least one dead stifled 7, dead stifled 7 pass through stub interface 4 and vertical well
Cylinder 2 is detachably connected, dead stifled 7 and branch 3 quantity and the quantity equal to stub interface 4.
The simulation borehole 5 is uniformly distributed along the extension of 3 other end of branch, and for cylindrical orifice, a diameter of 1-2cm,
Length is 5-10cm, and simulation fracture 6 is distributed along 3 side wall of branch, and parallel with the axial direction of branch 3, and crack is wedge structure, width
For 0.2-2cm, length 20-50cm.
The axial direction of the branch 3 is axially vertical with vertical bore 2, and the angle between contiguous branch 3 is 0 ° -360 °, hangs down
A diameter of 38.1mm of straight well cylinder 2.
The sensor is multiple, respectively positioned at 2 inside upper part of vertical bore, branch 3 and 2 junction of vertical bore, mould
Intend at borehole 5 and at simulation fracture 6.
According to experiment purpose, 3 quantity of branch is determined, 3 quantity of ordinary circumstance inferior division is 1-5 branch, by inapplicable branch 3
It lays down, changes dead stifled 7 into.The parameter of simulation borehole 5 and simulation fracture 6 in one branch 3 and the artillery simulators in another branch 3
Eye 5 is different with the parameter of simulation fracture 6, and the parameter of simulation borehole 5 is to simulate the diameter and length of borehole 5, a diameter of 1-2cm,
Length is 5-10cm, and the parameter of simulation fracture 6 is the width and length of simulation fracture 6, width 2.0cm, 1.5cm, 1.0cm,
0.6cm, 0.4cm or 0.2cm, length 20-50cm during experiment, only need to select the simulation borehole 5 and mould identical with experiment demand
The branch 3 that the size in plan crack 6 is identical connect with stub interface 4, remaining no stub interface 4 connects dead stifled 7.Contiguous branch
Angle between 3 is 0 ° -360 °, can simulate the closure experiment under any angle case.Vertical bore 2 it is a diameter of
There is wedge-shaped scale in 38.1mm, crack, diverting agent can be built up, until generating plugging effect, being all can be with equal proportion mould
Intend true 2 perforation holes of vertical bore and crack, improve the confidence level of experimental result, expand simulated experiment model as far as possible
It encloses.
Information collection end 1 acquires 2 top of vertical bore, branch 3 and 2 junction of vertical bore, artillery simulators by sensor
Experimental data at eye 5 and at simulation fracture 6.
And by simulation fracture 6, it can intuitively observe diverting agent flowing and block situation, mainly include diverting agent and accumulate
Process, the sequence accumulated form, start accumulation in different branches 3 etc., more intuitively, can intuitively show broadband pressure break accordingly（Point
Temporarily stifled pressure break, dynamic multi-level temporarily block up pressure break to stream）Closure process during practice of construction.
Embodiment three：
As shown in Figure 1, the injection main body includes piston container 8, displacement pump 9 and safety valve 10, one end of piston container 8
It 9 is connect with displacement pump, the other end of piston container 8 is connect with safety valve 10, and the other end of safety valve 10 is temporary with vertical bore 2
Blocking agent entrance connects.
Agitating device is equipped in the piston container 8.
The vertical bore 2 is equipped with pressure-display device 11.
After in diverting agent merging piston container 8, when being tested, displacement pump 9 is opened, displacement pump 9 will can temporarily block up
Agent is sent in vertical bore 2, and safety valve 10 can be used for controlling the flowing of diverting agent, and system working pressure 0-50MPa drives
Displacement range for pump 9 is 0.01-1000ml/min, and the injection pressure of displacement pump 9 is 0.1-50MPa.Diverting agent in order to prevent
It sinks to the bottom, agitating device is equipped in piston container 8.Pressure-display device 11 can be read in real time flows into temporarily blocking up in vertical bore 2
The pressure of agent.
Example IV：
Nearly well band temporarily blocks up simulating lab test method, and the method is applied to nearly well band and temporarily blocks up simulating lab test device
In, include the following steps：
The first step：Pre-assigned diverting agent is put into piston container 8, opens agitating device；
Second step：According to borehole to be simulated and the parameter in crack, determine opposite with borehole and fracture parameters to be simulated
The branch 3 answered and the quantity of branch 3 lay down branch 3 unwanted in vertical bore 2, change dead stifled 7 into；
Third walks：Displacement pump 9 is opened, the diverting agent in piston container 8 is fed through in vertical bore 2；
4th step：By the simulation fracture 6 in each branch 3, the flowing of observation diverting agent and closure situation are shown by pressure
Device 11 reads the pressure value of subject everywhere, while information collection end 1 acquires experimental data.
The subject includes 2 top of vertical bore, branch 3 and 2 junction of vertical bore, simulates at borehole 5 everywhere
At simulation fracture 6, information collection end 1 acquires subject temperature everywhere and changes with time relationship and pressure at any time
Variation relation.
Step 1 and step 2 meet the situation of requirement of experiment without sequencing or in step 1 in the process of implementation
Under, it is convenient to omit step 2.
By in pre-assigned diverting agent merging injection main body, diverting agent is sunk to the bottom in order to prevent, opens stirring in piston container 8
Mix device.
According to experiment purpose, 3 quantity of branch is determined, 3 quantity of ordinary circumstance inferior division is 1-5 branch, by inapplicable branch 3
It lays down, changes dead stifled 7 into.The parameter of simulation borehole 5 and simulation fracture 6 in one branch 3 and the artillery simulators in another branch 3
Eye 5 is different with the parameter of simulation fracture 6, and the parameter of simulation borehole 5 is to simulate the diameter and length of borehole 5, a diameter of 1-2cm,
Length is 5-10cm, and the parameter of simulation fracture 6 is the width and length of simulation fracture 6, width 2.0cm, 1.5cm, 1.0cm,
0.6cm, 0.4cm or 0.2cm, length 20-50cm during experiment, only need to select the simulation borehole 5 and mould identical with experiment demand
The branch 3 that the size in plan crack 6 is identical connect with stub interface 4, remaining no stub interface 4 connects dead stifled 7.
When being tested, displacement pump 9 is opened, diverting agent can be sent in vertical bore 2 by displacement pump 9, temporarily stifled
Agent is entered by injecting main body in vertical bore 2, is entered in branch 3 by vertical bore 2, eventually enters into simulation borehole 5
In simulation fracture 6, system working pressure 0-50MPa, the displacement range of displacement pump 9 is 0.01-1000ml/min, and displacement pumps
9 injection pressure is 0.1-50MPa.
By simulation fracture 6, it can intuitively observe diverting agent flowing and block situation, mainly be accumulated including diverting agent
Journey, the sequence accumulated form, start accumulation in different branches 3 etc., more intuitively, can intuitively show broadband pressure break accordingly（Shunting
Temporarily stifled pressure break, dynamic multi-level temporarily block up pressure break）Closure process during practice of construction.
Pressure-display device 11 can read the pressure for flowing into the diverting agent in vertical bore 2 in real time.
Information collection end 1 acquires 2 top of vertical bore, branch 3 and 2 junction of vertical bore, artillery simulators by sensor
Relationship that temperature at eye 5 and at simulation fracture 6 changes with time relationship and pressure changes with time.
Different diverting agent formulas, particle diameter distribution, proportioning, dosage size, slug design, note can be adjusted in experimentation
Enter the parameters such as speed, using the experimental data after temporarily blocking up as standard, such as：Boosting amplitude and each branch 3 boosting sequence etc., optimization
Broadband pressure break（Temporarily stifled pressure break, dynamic multi-level temporarily block up pressure break for shunting）Parameters of construction technology so as to instruct site operation, ensures pressure break
Effect.
The nearly well temporarily block up simulating lab test method can the nearly well of real simulation temporarily block up process, can be with each branch of accurate recording
Relationship that 3 temperature change with time relationship and pressure changes with time, effectively instructs Field design, improves construction effect
Fruit.The approach of solution is provided the problem of difficult especially for the diversion agents indoor moveable simulated injection such as granular pattern, fibrous type,
Can be also used for optimization dynamic multi-level and temporarily block up fracturing technology parameter, determine diverting agent particle diameter distribution, mechanical fraction concentration, dosage and
Slug design etc..The nearly well temporarily blocks up simulating lab test method safe operation, simple, and high degree of automation, credible result degree is high,
Without by field experience, improving practical plugging effect again and blocking quality.
It is to be appreciated that the technical solution between each embodiment can be combined with each other, but must be common with this field
Technical staff can be implemented as basis, and this skill is will be understood that when the combination appearance of technical solution is conflicting or can not realize
The combination of art scheme is not present, also not within the protection domain of the requires of the utility model.The device not being described in detail is
The prior art.
Claims (8)
1. nearly well band temporarily blocks up simulating lab test device, it is characterized in that：Including experiment end and information collection end（1）, experiment end packet
Injection main body and subject are included, injection main body is connect by pipeline with subject, and subject includes vertical bore（2）With
At least one branch（3）, vertical bore（2）Lower sides are equipped at least one stub interface（4）, branch（3）One end lead to
Cross stub interface（4）With vertical bore（2）Detachable connection, branch（3）Side wall be equipped with simulation borehole（5）And simulation fracture
（6）, information collection end（1）It is connect with the sensor being arranged in subject.
2. nearly well band according to claim 1 temporarily blocks up simulating lab test device, it is characterized in that：The subject also wraps
It includes at least one dead stifled（7）, it is dead stifled（7）Pass through stub interface（4）With vertical bore（2）It is detachably connected, it is dead stifled（7）And branch
（3）Quantity and equal to stub interface（4）Quantity.
3. nearly well band according to claim 1 temporarily blocks up simulating lab test device, it is characterized in that：The simulation borehole（5）
Along branch（3）The extension of the other end is uniformly distributed, and for cylindrical orifice, a diameter of 1-2cm, length 5-10cm, and simulation is split
Seam（6）Along branch（3）Side wall is distributed, and and branch（3）Axial direction it is parallel, crack is wedge structure, width 0.2-2cm, long
It spends for 20-50cm.
4. nearly well band according to claim 1 temporarily blocks up simulating lab test device, it is characterized in that：The branch（3）Axis
To with vertical bore（2）Axially vertical, contiguous branch（3）Between angle be 0 ° -360 °, vertical bore（2）It is a diameter of
38.1mm。
5. nearly well band according to claim 1 temporarily blocks up simulating lab test device, it is characterized in that：The sensor is more
It is a, respectively positioned at vertical bore（2）Inside upper part, branch（3）With vertical bore（2）Junction, simulation borehole（5）Place and simulation
Crack（6）Place.
6. nearly well band according to claim 1 temporarily blocks up simulating lab test device, it is characterized in that：The injection main body includes
Piston container（8）, displacement pump（9）And safety valve（10）, piston container（8）One end and displacement pump（9）Connection, piston container
（8）The other end and safety valve（10）Connection, safety valve（10）The other end and vertical bore（2）Diverting agent entrance connection.
7. nearly well band according to claim 6 temporarily blocks up simulating lab test device, it is characterized in that：The piston container（8）
It is interior to be equipped with agitating device.
8. nearly well band according to claim 6 temporarily blocks up simulating lab test device, it is characterized in that：The vertical bore（2）
It is equipped with pressure-display device（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721698512.5U CN207586208U (en) | 2017-12-08 | 2017-12-08 | Nearly well band temporarily blocks up simulating lab test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721698512.5U CN207586208U (en) | 2017-12-08 | 2017-12-08 | Nearly well band temporarily blocks up simulating lab test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207586208U true CN207586208U (en) | 2018-07-06 |
Family
ID=62736293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721698512.5U Expired - Fee Related CN207586208U (en) | 2017-12-08 | 2017-12-08 | Nearly well band temporarily blocks up simulating lab test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207586208U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608019A (en) * | 2019-10-21 | 2019-12-24 | 中国石油化工股份有限公司 | Steering separate-layer fracturing experiment simulation device and using method thereof |
| CN115524459A (en) * | 2022-11-04 | 2022-12-27 | 中国石油大学(华东) | Device for evaluating migration plugging performance of temporary plugging fracturing temporary plugging material and experimental method |
-
2017
- 2017-12-08 CN CN201721698512.5U patent/CN207586208U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608019A (en) * | 2019-10-21 | 2019-12-24 | 中国石油化工股份有限公司 | Steering separate-layer fracturing experiment simulation device and using method thereof |
| CN110608019B (en) * | 2019-10-21 | 2021-09-28 | 中国石油化工股份有限公司 | Steering separate-layer fracturing experiment simulation device and using method thereof |
| CN115524459A (en) * | 2022-11-04 | 2022-12-27 | 中国石油大学(华东) | Device for evaluating migration plugging performance of temporary plugging fracturing temporary plugging material and experimental method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107976520A (en) | Nearly well band temporarily blocks up simulating lab test device and method | |
| CN104237460B (en) | A kind of device and application thereof of simulating the complicated seam of volume fracturing net proppants settle down rule | |
| CN107387053B (en) | Method for collaborative fracturing of main cracks and complex crack network of large channel | |
| CN107355206B (en) | A kind of shale gas horizontal well refracturing temporarily blocks up critical pressure test method | |
| CN104792491B (en) | One kind simulation multi-angle seam net proppant settlement law experimental provision | |
| CN106869898B (en) | Simulate the device and method of complex fracture sanding | |
| CN105275444B (en) | A kind of apparatus and method of the single seam inner support agent settlement law of visual Simulation dynamic | |
| CN103048431B (en) | Hydrofracture propping agent settlement and permeability testing device | |
| CN109612896A (en) | True sandstone core physical simulation and Displacement Efficiency method containing crack | |
| CN109001438A (en) | A kind of joint seal gas shutoff experimental simulation device and test method | |
| CN105067792B (en) | A kind of experimental technique of simulating mining site sub-prime dispensing | |
| CN207554023U (en) | Hydrate recovery well cased hole gravel packing analogue system | |
| CN106640062B (en) | Cementing slurry water enchroachment (invasion) Simulation evaluation instrument and evaluation method | |
| CN104481504B (en) | Viscous crude dissolved gas drive develops experimental system for simulating and its method | |
| CN208137906U (en) | Actual triaxial testing apparatus is used in a kind of temporarily stifled steering behaviour evaluation | |
| CN207586208U (en) | Nearly well band temporarily blocks up simulating lab test device | |
| CN206707687U (en) | Simulate the device of complex fracture sanding | |
| CN107060718A (en) | Fracture support agent lays analogue experiment installation and method | |
| CN106593383A (en) | Hydraulic-fracturing physical simulation method for downhole rock core | |
| CN108266166A (en) | A kind of fractured reservoir fluctuates recover the oil microcosmic jet stream anatonosis mechanism evaluation experimental device and method | |
| CN110348031A (en) | The nearly pit shaft crack distorted configurations method for numerical simulation of fractured horizontal well | |
| CN205638405U (en) | Crack guiding device | |
| CN105258840A (en) | Method for measuring optimum miscible pressure and miscible region of carbon dioxide between injection and production wells | |
| CN108267391A (en) | A kind of experimental provision and method of the evaluation of machine-pumped oil well underground gas-tight tool | |
| CN108316915A (en) | A kind of method that the optimal dosage of diversion agent is temporarily blocked up in determining oil/gas well compact reservoir |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201028 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING Co. Address before: 710018 Shaanxi province Xi'an Weiyang Changqing Changqing prosperous Park District Building Room 1203 Patentee before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180706 Termination date: 20211208 |