CN106285540A - Coal bed gas well casing repairing method - Google Patents
Coal bed gas well casing repairing method Download PDFInfo
- Publication number
- CN106285540A CN106285540A CN201510293777.6A CN201510293777A CN106285540A CN 106285540 A CN106285540 A CN 106285540A CN 201510293777 A CN201510293777 A CN 201510293777A CN 106285540 A CN106285540 A CN 106285540A
- Authority
- CN
- China
- Prior art keywords
- tubing string
- sleeve pipe
- repaired
- drifting
- bed gas
- 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.)
- Pending
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of coal bed gas well casing repairing method, belong to coal bed gas well well workover technology field.Described method includes: enters drifting tubing string under in sleeve pipe and carries out drifting；During entering drifting tubing string under, when there being tight point, trip out drifting tubing string；By milling tubing string, sleeve pipe generation bad break or breakage are carried out milling process, so that entering bottom to be repaired under milling tubing string；Tubing string will be repaired and include the first oil pipe and the expansion cone connecting the first oil pipe and expandable screen down to coal seam to be repaired section, reparation tubing string；Suppressing expansion cone, make the expansion cone conical surface support expandable screen inwall, and make expandable screen outward expansion, expandable screen is close to internal surface of sleeve pipe.The present invention cannot meet the problem producing needs of coal bed gas well after solving reparation complex steps, and reparation, it is achieved that after simplifying loaded down with trivial details construction procedure, and reparation, pit shaft intensity height, stability are more preferably, meets the effect of the production needs of coal bed gas well.For repairing coal bed gas well sleeve pipe.
Description
Technical field
The present invention relates to coal bed gas well well workover technology field, particularly to a kind of coal bed gas well casing repairing method.
Background technology
Coal bed gas is a kind of novel cleaning, high-grade energy and industrial chemicals, is widely used in each neck of society
Territory, is one of following important energy.When producing region occurs that complicated geology, interlayer wriggling, stratum settlement etc. are existing
As time, the sleeve pipe in coal bed gas well can suffer damage along with the prolongation of coal-bed gas exploitation time, thus cause
Coal Seam Collapse, aerogenesis channel jam, the repair therefore damaging sleeve pipe is coal bed gas production development process
The middle major issue needing to solve.
In prior art, mainly by expandable screen repairing casing, detailed process is: initially with machinery
Screen casing is hung up by hanger, then uses reducing expansion tool that expandable screen is carried out expansion process, swollen
Internal surface of sleeve pipe pressed close to by screen casing after swollen, completes the reparation to sleeve pipe.
But, after being repaired sleeve pipe by common expansion tube, Mechanical suspender still remains in coal bed gas
In well, thus reducing the latus rectum of aerogenesis passage, lower subjob expansion hanger easily produces axial displacement,
Causing expansion hanger to loosen, expandable screen cannot be close to internal surface of sleeve pipe completely, affects gas production, therefore,
The step repairing coal bed gas well sleeve pipe is relatively complicated, and cannot meet the production of coal bed gas well after reparation
Need.
Summary of the invention
Step in order to solve to repair coal bed gas well sleeve pipe is relatively complicated, and cannot meet coal after reparation
The problem producing needs of layer gas well, the invention provides a kind of coal bed gas well casing repairing method.Described skill
Art scheme is as follows:
Providing a kind of coal bed gas well casing repairing method, described method includes:
Enter drifting tubing string under in sleeve pipe and carry out drifting；
During entering described drifting tubing string under, when there being tight point, trip out described drifting tubing string, described
Tight point is that described sleeve pipe produces bad break or damaged and hinder the descending position of described drifting tubing string；
By milling tubing string, described sleeve pipe generation bad break or breakage are carried out milling process, so that described milling
Bottom to be repaired is entered under tubing string；
By reparation tubing string down to coal seam to be repaired section, described reparation tubing string includes the first oil pipe and connects institute
Stating expansion cone and the expandable screen of the first oil pipe, the conical surface of described expansion cone is towards the tube chamber of described expandable screen；
Described expansion cone is suppressed, makes the conical surface of described expansion cone support described expandable screen and make described
Expandable screen expands is close to described internal surface of sleeve pipe.
Optionally, at described tubing string of repairing down to before the section of coal seam to be repaired, described method also includes:
By pretreatment tubing string down to described bottom to be repaired；
By described pretreatment tubing string, the internal diameter of described sleeve pipe is detected, and well section to be repaired is carried out clearly
Reason；
Described tubing string of repairing down to coal seam to be repaired section, including:
According to the internal diameter of the sleeve pipe that described pretreatment tubing string detects, by reparation tubing string down to coal seam to be repaired section,
The external diameter making the expandable screen in described reparation tubing string is less than the internal diameter of described sleeve pipe.
Optionally, described pretreatment tubing string includes the second oil pipe, sizing rule and scraper；
Described by described pretreatment tubing string, described casing inner diameter is detected, and well section to be repaired is carried out
Cleaning, including:
The internal diameter of described sleeve pipe is detected by described sizing rule；
By described scraper, rust and the dirt of described well section to be repaired are carried out scraping cleaning.
Optionally,
Described drifting tubing string includes the 3rd oil pipe and drift size gauge tool；
Described milling tubing string includes the 4th oil pipe and milling tool.
Optionally, described described expansion cone is suppressed after, described method includes:
Trip out described first oil pipe, described second oil pipe, described 3rd oil pipe, described 4th oil pipe and described
Expansion cone.
Optionally, operation pressure when suppressing described expansion cone is less than or equal to 40 MPas.
Optionally, the sidewall of described expandable screen is provided with sieve aperture, and described sieve aperture is on described expandable screen
Distribution density is every meter of 30 holes, a diameter of 6 millimeters of described sieve aperture.
Optionally, described in sleeve pipe under enter before drifting tubing string carries out drifting, described method also includes:
Trip out the process pipe string in coal bed gas well；
Enter sand-flushing pipe column under in described sleeve pipe and pit shaft is carried out sand washing cleaning；
Trip out described sand-flushing pipe column.
The invention provides a kind of coal bed gas well casing repairing method, first under enter drifting tubing string during,
When there being tight point, trip out drifting tubing string；Then by milling tubing string, sleeve pipe generation bad break or breakage are entered
Row milling processes, so that entering bottom to be repaired under milling tubing string；Tubing string will be repaired again down to coal to be repaired
Interval；Finally the expansion cone repairing tubing string is suppressed, makes expandable screen expand and be close to internal surface of sleeve pipe,
Compared to existing casing repairing method, it is not necessary to use Mechanical suspender, simplify and coal bed gas well sleeve pipe is entered
After the step that row is repaired, and reparation, pit shaft intensity is high, stability is more preferable, is fully able to meet coal bed gas well
Produce and need.
It should be appreciated that it is only exemplary and explanatory that above general description and details hereinafter describe,
The present invention can not be limited.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of a kind of coal bed gas well casing repairing method that the embodiment of the present invention provides；
Fig. 2 is the flow chart of the another kind of coal bed gas well casing repairing method that the embodiment of the present invention provides；
Fig. 3 is the structural representation of a kind of sleeve pipe producing bad break that the embodiment of the present invention provides；
Fig. 4 be the embodiment of the present invention provide Fig. 3 bad break sleeve pipe carried out milling by milling tubing string process it
After structural representation；
What Fig. 5 was that the embodiment of the present invention provides a kind of suppress rear expandable screen and is close to internal surface of sleeve pipe expansion cone
Structural representation.
By above-mentioned accompanying drawing, it has been shown that the embodiment that the present invention is clear and definite, hereinafter will be described in more detail.
These accompanying drawings and word are described and are not intended to be limited by any mode the scope of present inventive concept, but logical
Crossing with reference to specific embodiment is that those skilled in the art illustrate idea of the invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Embodiment is described in further detail.
Embodiments provide a kind of coal bed gas well casing repairing method, as it is shown in figure 1, the method bag
Include:
Step 101, in sleeve pipe under enter drifting tubing string and carry out drifting.
Step 102, under enter drifting tubing string during, when there being tight point, trip out drifting tubing string, this chance
Resistance point produces bad break or damaged and that obstruction drifting tubing string is descending position for sleeve pipe.
Step 103, by milling tubing string, sleeve pipe is produced bad break or breakage and carry out milling process, so that milling
Bottom to be repaired is entered under tubing string.
Step 104, will repair tubing string down to coal seam to be repaired section, this reparation tubing string include the first oil pipe and
Connecting expansion cone and the expandable screen of the first oil pipe, the conical surface of expansion cone is towards the tube chamber of expandable screen.
Step 105, expansion cone is suppressed, make the conical surface of expansion cone support expandable screen and make expandable screen
Expand and be close to internal surface of sleeve pipe.
In sum, the embodiment of the present invention provide coal bed gas well casing repairing method, first under enter drifting
During tubing string, when there being tight point, trip out drifting tubing string；Then by milling tubing string, sleeve pipe is produced
Disconnected or breakage carries out milling process, so that entering bottom to be repaired under milling tubing string；Tubing string will be repaired again
Down to coal seam to be repaired section；Finally the expansion cone repairing tubing string is suppressed, make expandable screen expand
It is close to internal surface of sleeve pipe, compared to existing casing repairing method, it is not necessary to using Mechanical suspender, it is right to simplify
Coal bed gas well sleeve pipe disclosure satisfy that the production needs of coal bed gas well after carrying out the step repaired, and reparation.
Optionally, before step 104, the method can also include: by pretreatment tubing string down to be repaired
Bottom；By pretreatment tubing string, the internal diameter of sleeve pipe is detected, and well section to be repaired is cleared up.
Step 104 includes: according to the internal diameter of the sleeve pipe that pretreatment tubing string detects, by reparation tubing string down to treating
Repair coal seam section, make the external diameter of the expandable screen in reparation tubing string be less than the internal diameter of sleeve pipe.
Concrete, pretreatment tubing string includes the second oil pipe, sizing rule and scraper.By pretreatment tubing string pair
Casing inner diameter detects, and clears up well section to be repaired, including: by sizing rule detection sleeve pipe
Internal diameter；By scraper, rust and the dirt of well section to be repaired are carried out scraping cleaning.
Optionally, drifting tubing string includes the 3rd oil pipe and drift size gauge tool；Milling tubing string includes the 4th oil pipe and milling
Instrument.
After step 105, the method can also include: trips out the first oil pipe, the second oil pipe, the 3rd oil
Pipe, the 4th oil pipe and expansion cone.
Optionally, operation pressure when suppressing expansion cone is less than or equal to 40 MPas.
Optionally, the sidewall of expandable screen is provided with sieve aperture, and this sieve aperture distribution density on expandable screen is
Every meter of 30 holes, a diameter of 6 millimeters of sieve aperture.
Before step 101, the method can also include: trips out the process pipe string in coal bed gas well；At set
Enter sand-flushing pipe column under in pipe and pit shaft is carried out sand washing cleaning；Trip out sand-flushing pipe column.
In sum, the embodiment of the present invention provide coal bed gas well casing repairing method, first under enter drifting
During tubing string, when there being tight point, trip out drifting tubing string；Then by milling tubing string, sleeve pipe is produced
Bad break or breakage carry out milling process, so that entering bottom to be repaired under milling tubing string；Again reparation is managed
Post is down to coal seam to be repaired section；Finally the expansion cone repairing tubing string is suppressed, make expandable screen occur swollen
Swelling patch internal surface of sleeve pipe, compared to existing casing repairing method, it is not necessary to use Mechanical suspender, simplify
Disclosure satisfy that the production needs of coal bed gas well after the step that coal bed gas well sleeve pipe is repaired, and reparation.
Embodiments provide another kind of coal bed gas well casing repairing method, as in figure 2 it is shown, the method
Including:
Step 201, the process pipe string tripped out in coal bed gas well.
Step 202, in sleeve pipe under enter sand-flushing pipe column pit shaft carried out sand washing cleaning.
Step 203, trip out sand-flushing pipe column.
Step 201 is referred to prior art to step 203, does not repeats them here.
Step 204, in sleeve pipe under enter drifting tubing string and carry out drifting.
It should be noted that drifting tubing string can include the 3rd oil pipe and drift size gauge tool.Drift size gauge tool is for detecting
The specific purpose tool of downhole tubular thing latus rectum size, leading to mainly for detection of endoporus such as sleeve pipe, oil pipe, drilling rods
Footpath size whether conformance with standard, is the conventional detection instrument of underground work, and be divided into sleeve pipe drift size gauge tool and oil pipe,
The big class of drilling rod drift size gauge tool two.The embodiment of the present invention can use sleeve pipe drift size gauge tool to detect latus rectum size in sleeve pipe.
Step 205, under enter drifting tubing string during, it may be judged whether have tight point, when there being tight point,
Perform step 206；When without tight point, perform step 208.
This tight point is that sleeve pipe produces bad break, undergauge or damaged and that obstruction drifting tubing string is descending position.Fig. 3
For producing the structural representation of the sleeve pipe 01 of bad break, the position indicated by dotted line 10 is tight point.In Fig. 3
02 expression coal seam.
Step 206, trip out drifting tubing string.Perform step 207.
Step 207, by milling tubing string, sleeve pipe is produced bad break or breakage and carry out milling process, so that milling
Bottom to be repaired is entered under tubing string.Perform step 208.
This milling tubing string can include the 4th oil pipe and milling tool.The specifically used method of milling tool is permissible
With reference to prior art, this is repeated no more by the embodiment of the present invention.Fig. 4 is in Fig. 3 by milling tubing string
Sleeve pipe 01 produces and carries out the structural representation after milling process at wrong section.
Step 208, by pretreatment tubing string down to bottom to be repaired.Perform step 209.
This pretreatment tubing string includes the second oil pipe, sizing rule and scraper.Wherein, sizing rule and scraper
Use process is referred to prior art, does not repeats them here.
Step 209, by pretreatment tubing string, the internal diameter of sleeve pipe is detected, and well section to be repaired is carried out clearly
Reason.Perform step 210.
Concrete, step 209 may include that the internal diameter by sizing rule detection sleeve pipe；By scraper pair
Rust and the dirt of well section to be repaired carry out scraping cleaning.
Step 210, general repair tubing string down to coal seam to be repaired section.Perform step 211.
This reparation tubing string includes the first oil pipe and the expansion cone connecting the first oil pipe and expandable screen, expands
The conical surface of cone is towards the tube chamber of expandable screen.The sidewall of expandable screen is provided with sieve aperture, and this sieve aperture is at expanded screen
Distribution density on pipe is every meter of 30 holes, and a diameter of 6 millimeters of sieve aperture.
Expansion cone can be divided into fixed and diameter adjustable, and expansion cone will be answered by the biggest interface when operation
Power, it is therefore desirable to considering the cone structure of expansion cone, the problem such as selection and lubrication, expansion cone should have relatively
High intensity, resistance to impact, wear-resisting undermine corrosion resistance etc..
Step 210 may include that the internal diameter of the sleeve pipe detected according to pretreatment tubing string, will repair under tubing string
To coal seam to be repaired section, the external diameter of the expandable screen in reparation tubing string is made to be less than the internal diameter of sleeve pipe.
Step 211, to repair tubing string expansion cone suppress, make expansion cone the conical surface support expandable screen also
Make expandable screen expand and be close to internal surface of sleeve pipe.Perform step 212.
It should be noted that operation pressure when suppressing expansion cone can be less than or equal to 40 MPas.
After Fig. 5 is for suppressing expansion cone, expandable screen 03 expands and is close to the structure of sleeve pipe 01 inwall
Schematic diagram.
Step 212, the oil pipe tripping out each tubing string and expansion cone.
It should be noted that the oil pipe in the embodiment of the present invention is heavy wall tubing.Expandable screen is by high-tech
Aeronautical material processes.Using this coal bed gas well casing repairing method, it is former for making the run through casing size after reparation
Run through casing size deducts the wall thickness of the expandable screen of 2 times, and the mechanical performance of the expandable screen after expanding can reach
It is grade of steel J55 to API grade of steel J55, i.e. credit rating.
As a example by the coal bed gas well sleeve pipe of a certain well of certain block, this coal bed gas well casing repairing method is made into
One step explanation.This well due to during operation tubing string cannot normally transfer, gas production is dropped sharply to by 6000 sides/sky
2000 sides/sky, the reason that gas production declines is casing failure.This well coal seam section known is 448.50-454.40m
(rice), coal seam thickness is 5.9m, and casing inner diameter is 124.3mm (millimeter), and sleeve outer is 139.7mm.
First trip out the process pipe string in coal bed gas well, under enter sand-flushing pipe column and carry out sand washing process, trip out sand-flushing pipe column.
Under enter D73 oil pipe (i.e. a diameter of 73mm of oil pipe) and D110 (i.e. a diameter of 110mm of oil pipe) and lead to
The drifting tubing string of well rule carries out drifting, is found to have tight point, sees Fig. 3, trips out the drift size gauge tool of drifting tubing string.
Under enter the milling tubing string of D73 oil pipe and milling tool and sleeve pipe produced at wrong section and carry out milling process, until mill
Enter bottom coal seam 02 at 454.4m under milling tubing string.Oil pipe and sizing are advised, scraper down to bottom,
Open the internal diameter of sizing rule detection sleeve pipe 01, and up and down 3 meters, detect that the internal diameter of sleeve pipe 01 is
120mm, then with rust and the dirt of the upper and lower scraping of scraper well to be repaired section.Then, D73 oil is entered under
Pipe and expansion cone, the reparation tubing string of expandable screen, the distance that expandable screen is lowered to is 454m, expandable screen
A length of 6 meters, external diameter is 108mm, and internal diameter is 89mm, then suppresses expansion cone, and pressure is 26MPa
(megapascal (MPa)), makes expandable screen 03 expand and is close to sleeve pipe 01 inwall, as shown in Figure 5.Finally rise
Go out each oil pipe and expansion cone, so far complete the reparation to coal bed gas well sleeve pipe.
The coal bed gas well casing repairing method that the embodiment of the present invention provides can repair the set of corrosion failure and bad break
Pipe, it is ensured that sleeve pipe unobstructed, re-establishes aerogenesis passage in the case of not carrying out perforating job simultaneously, real
Show the normal production of coal bed gas, and can effectively contain Coal Seam Collapse, it is to avoid tiny coal cinder and fracturing sand have existed
Pile up near sleeve pipe.
In sum, the embodiment of the present invention provide coal bed gas well casing repairing method, first under enter drifting
During tubing string, when there being tight point, trip out drifting tubing string；Then by milling tubing string, sleeve pipe is produced
Bad break or breakage carry out milling process, so that entering bottom to be repaired under milling tubing string；Again reparation is managed
Post is down to coal seam to be repaired section；Finally the expansion cone repairing tubing string is suppressed, make expandable screen occur swollen
Swelling patch internal surface of sleeve pipe, compared to existing casing repairing method, it is not necessary to use Mechanical suspender, simplify
After the step repairing coal bed gas well sleeve pipe, and reparation, pit shaft intensity is high, stability is more preferable, is entirely capable of
Enough meet the production needs of coal bed gas well.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (8)
1. a coal bed gas well casing repairing method, it is characterised in that described method includes:
Enter drifting tubing string under in sleeve pipe and carry out drifting；
During entering described drifting tubing string under, when there being tight point, trip out described drifting tubing string, described
Tight point is that described sleeve pipe produces bad break or damaged and hinder the descending position of described drifting tubing string；
By milling tubing string, described sleeve pipe generation bad break or breakage are carried out milling process, so that described milling
Bottom to be repaired is entered under tubing string；
By reparation tubing string down to coal seam to be repaired section, described reparation tubing string includes the first oil pipe and connects institute
Stating expansion cone and the expandable screen of the first oil pipe, the conical surface of described expansion cone is towards the tube chamber of described expandable screen；
Described expansion cone is suppressed, makes the conical surface of described expansion cone support described expandable screen and make described
Expandable screen expands is close to described internal surface of sleeve pipe.
Method the most according to claim 1, it is characterised in that at described tubing string of repairing down to be repaired
Before the section of multiple coal seam, described method also includes:
By pretreatment tubing string down to described bottom to be repaired；
By described pretreatment tubing string, the internal diameter of described sleeve pipe is detected, and well section to be repaired is carried out clearly
Reason；
Described tubing string of repairing down to coal seam to be repaired section, including:
According to the internal diameter of the sleeve pipe that described pretreatment tubing string detects, by reparation tubing string down to coal seam to be repaired section,
The external diameter making the expandable screen in described reparation tubing string is less than the internal diameter of described sleeve pipe.
Method the most according to claim 2, it is characterised in that described pretreatment tubing string includes the second oil
Pipe, sizing rule and scraper；
Described by described pretreatment tubing string, described casing inner diameter is detected, and well section to be repaired is carried out
Cleaning, including:
The internal diameter of described sleeve pipe is detected by described sizing rule；
By described scraper, rust and the dirt of described well section to be repaired are carried out scraping cleaning.
Method the most according to claim 3, it is characterised in that
Described drifting tubing string includes the 3rd oil pipe and drift size gauge tool；
Described milling tubing string includes the 4th oil pipe and milling tool.
Method the most according to claim 4, it is characterised in that carry out beating to described expansion cone described
After pressure, described method includes:
Trip out described first oil pipe, described second oil pipe, described 3rd oil pipe, described 4th oil pipe and described
Expansion cone.
Method the most according to claim 1, it is characterised in that
Operation pressure when suppressing described expansion cone is less than or equal to 40 MPas.
Method the most according to claim 1, it is characterised in that
The sidewall of described expandable screen is provided with sieve aperture, described sieve aperture distribution density on described expandable screen
For every meter of 30 holes, a diameter of 6 millimeters of described sieve aperture.
8. according to the arbitrary described method of claim 1 to 7, it is characterised in that described in sleeve pipe under
Entering before drifting tubing string carries out drifting, described method also includes:
Trip out the process pipe string in coal bed gas well；
Enter sand-flushing pipe column under in described sleeve pipe and pit shaft is carried out sand washing cleaning；
Trip out described sand-flushing pipe column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293777.6A CN106285540A (en) | 2015-06-01 | 2015-06-01 | Coal bed gas well casing repairing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293777.6A CN106285540A (en) | 2015-06-01 | 2015-06-01 | Coal bed gas well casing repairing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106285540A true CN106285540A (en) | 2017-01-04 |
Family
ID=57655746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510293777.6A Pending CN106285540A (en) | 2015-06-01 | 2015-06-01 | Coal bed gas well casing repairing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106285540A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884622A (en) * | 2017-04-27 | 2017-06-23 | 河南理工大学 | A kind of under-voltage efficient sand bailing process of coal seam reservoirs horizontal well |
| CN108457612A (en) * | 2018-03-12 | 2018-08-28 | 刘屹凡 | A kind of petroleum casing pipe chemical method restorative procedure |
| CN109322618A (en) * | 2018-10-19 | 2019-02-12 | 成都科盛石油科技有限公司 | Heterogeneous shale gas well Reservoir Section finishing drilling method |
| CN109538148A (en) * | 2018-09-30 | 2019-03-29 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of soft metal expandable casing patching coal bed gas well suck-back layer method |
| CN112780208A (en) * | 2021-01-06 | 2021-05-11 | 中国矿业大学 | Gas extraction drilling fault-breaking deformation area repairing system and repairing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507343A (en) * | 1994-10-05 | 1996-04-16 | Texas Bcc, Inc. | Apparatus for repairing damaged well casing |
| US6997260B1 (en) * | 2003-03-06 | 2006-02-14 | Bruce Trader | Method of repairing tubular members on oil and gas wells |
| CN2881071Y (en) * | 2005-09-05 | 2007-03-21 | 杨相杰 | Multipurpose well pigging gauge |
| CN201162508Y (en) * | 2008-01-31 | 2008-12-10 | 华鼎鸿基石油工程技术(北京)有限公司 | Sizing scraper |
| CN201162498Y (en) * | 2008-01-31 | 2008-12-10 | 华鼎鸿基石油工程技术(北京)有限公司 | Splicing mechanism of expansion prick |
| CN201428405Y (en) * | 2009-03-31 | 2010-03-24 | 安丘市石油钻采机械厂 | Patch device for casing damaged well |
-
2015
- 2015-06-01 CN CN201510293777.6A patent/CN106285540A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507343A (en) * | 1994-10-05 | 1996-04-16 | Texas Bcc, Inc. | Apparatus for repairing damaged well casing |
| US6997260B1 (en) * | 2003-03-06 | 2006-02-14 | Bruce Trader | Method of repairing tubular members on oil and gas wells |
| CN2881071Y (en) * | 2005-09-05 | 2007-03-21 | 杨相杰 | Multipurpose well pigging gauge |
| CN201162508Y (en) * | 2008-01-31 | 2008-12-10 | 华鼎鸿基石油工程技术(北京)有限公司 | Sizing scraper |
| CN201162498Y (en) * | 2008-01-31 | 2008-12-10 | 华鼎鸿基石油工程技术(北京)有限公司 | Splicing mechanism of expansion prick |
| CN201428405Y (en) * | 2009-03-31 | 2010-03-24 | 安丘市石油钻采机械厂 | Patch device for casing damaged well |
Non-Patent Citations (4)
| Title |
|---|
| 孙树强: "《井下作业》", 30 September 2006 * |
| 李建虎: "膨胀管补贴技术对套管通径的要求分析", 《化学工程与装配》 * |
| 李颖川: "《采油工程》", 27 February 2009 * |
| 石兴春: "《井下作业工程监督手册》", 31 July 2008 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884622A (en) * | 2017-04-27 | 2017-06-23 | 河南理工大学 | A kind of under-voltage efficient sand bailing process of coal seam reservoirs horizontal well |
| CN108457612A (en) * | 2018-03-12 | 2018-08-28 | 刘屹凡 | A kind of petroleum casing pipe chemical method restorative procedure |
| CN108457612B (en) * | 2018-03-12 | 2020-07-03 | 张佳彦 | Chemical method for repairing petroleum casing pipe |
| CN109538148A (en) * | 2018-09-30 | 2019-03-29 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of soft metal expandable casing patching coal bed gas well suck-back layer method |
| CN109322618A (en) * | 2018-10-19 | 2019-02-12 | 成都科盛石油科技有限公司 | Heterogeneous shale gas well Reservoir Section finishing drilling method |
| CN112780208A (en) * | 2021-01-06 | 2021-05-11 | 中国矿业大学 | Gas extraction drilling fault-breaking deformation area repairing system and repairing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106285540A (en) | Coal bed gas well casing repairing method | |
| CN105507865B (en) | The method of refracturing for oil gas water well | |
| CN103061684B (en) | Open-hole horizontal well segmentation many bunches of homogeneous acidification tubing strings and acidization tool thereof | |
| CN108119122B (en) | Staged fracturing method for casing-deformation complex well | |
| CN103510958B (en) | A kind of gentle dip super-high seam rock cross-cut coal uncovering | |
| CN105986795B (en) | Coal bed gas horizontal well coal seam remodeling method | |
| CN105134141A (en) | Process pipe column | |
| CN102650205A (en) | Method for producing oil by changing bottom water reservoir oil well into water dumping well and oil production well system | |
| CN107725013A (en) | A kind of method that zonal testing and oil production by layer connection is made | |
| CN103912302A (en) | Seam-penetrating drilling hydrofracturing gas extracting method | |
| CN105589987B (en) | Reservoir selection evaluation method is developed in the two-way drive of fault block oil reservoir artificial gas cap-side water | |
| CN107620581A (en) | The construction method of the dual-purpose mine shaft inspection hole of one well | |
| CN110439524A (en) | The refracturing remodeling method of oil/gas well | |
| CN106930722A (en) | The permanent shut-in well method of the natural gas well | |
| CN106150428A (en) | Split type exempting from bores plug completion tubular column and completion method thereof | |
| CN102767349A (en) | Coalbed methane horizontal well screen pipe suspension well completion method | |
| CN111022025B (en) | Deep brine exploration and production combined process | |
| Miao et al. | Development status and prospect of staged fracturing technology in horizontal wells | |
| CN113294135A (en) | Method for remodeling sleeve shaft in horizontal well casing | |
| CN203808896U (en) | Long-section casing damage well expansion pipe double-card casing pipe layered packing repairing device | |
| CN106761514A (en) | A kind of casing damaged well self-expanding rubber patch device and its subsidy method | |
| Furui et al. | Optimization of horizontal well-completion design with cased/perforated or slotted liner completions | |
| CN104863559A (en) | Method for increasing single well productivity of ultra-deep-layer low-permeability heavy oil reservoir | |
| RU2637539C1 (en) | Method for formation of cracks or fractures | |
| CN104481468A (en) | Coal bed gas well open hole well completion technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
|
| RJ01 | Rejection of invention patent application after publication |