CN114635659B - Ground drilling negative pressure type device and method for plugging leakage stratum wellhead - Google Patents
Ground drilling negative pressure type device and method for plugging leakage stratum wellhead Download PDFInfo
- Publication number
- CN114635659B CN114635659B CN202210364477.2A CN202210364477A CN114635659B CN 114635659 B CN114635659 B CN 114635659B CN 202210364477 A CN202210364477 A CN 202210364477A CN 114635659 B CN114635659 B CN 114635659B
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- pipe
- plugging
- observation
- valve
- 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.)
- Active
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000004568 cement Substances 0.000 claims description 23
- 239000002002 slurry Substances 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 9
- 238000007569 slipcasting Methods 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/005—Monitoring or checking of cementation quality or level
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Quality & Reliability (AREA)
- Geophysics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a ground drilling negative pressure type leakage stratum wellhead device and a using method thereof, and relates to a ground drilling negative pressure type leakage stratum wellhead device.
Description
Technical Field
The invention relates to the field of ground drilling, in particular to a ground drilling negative pressure type device and a ground drilling negative pressure type method for plugging a leakage stratum wellhead.
Background
Frequently encounter the leakage stratum in the middle of the ground drilling construction, use cement slurry shutoff when mud plugging material is not good to the leakage severe layer shutoff effect, the pressure of liquid column in the drilling can be increased in the cement slurry shutoff, and the cement slurry diffuses the speed that gets into the leakage layer faster, and the cement slurry often falls and distributes in well head and in the leakage stratum before solidifying for the shutoff effect is relatively poor or can't effectively shutoff leakage stratum, and then influences the problem that drilling work normally goes on. The invention designs a ground drilling negative pressure type wellhead device for plugging a leakage stratum in order to realize the cement slurry plugging of the ground drilling leakage stratum without influencing the normal operation of subsequent drilling work.
Disclosure of Invention
The invention aims to provide a ground drilling negative pressure type device and a ground drilling negative pressure type method for plugging a lost stratum wellhead, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a ground drilling negative pressure formula shutoff leakage stratum wellhead assembly, includes the sleeve pipe, sheathed tube outside cover is equipped with the outer tube, the bottom fixedly connected with outer pipe ring of outer pipe, the inner wall and the sheathed tube outer wall fixed connection of outer pipe ring, sheathed tube inside is provided with the inner tube, the bottom fixedly connected with inner tube ring of inner tube, the top fixedly connected with sealed lid of inner tube, the middle part fixedly connected with slip casting pipe of sealed lid, the middle part fixedly connected with slip casting valve of slip casting pipe, the opposite side fixed mounting negative pressure table at sealed top, one side fixedly connected with observation tube at sealed top, the middle part fixedly mounted of observation tube has the observation valve.
The invention also provides a method for plugging the wellhead of the lost stratum by using the ground drilling negative pressure, which comprises the following steps:
step one: the inner pipe is arranged in a sleeve which is put into the well, the sealing cover is welded and fixed with the inner pipe, and the observation pipe provided with the observation valve, the negative pressure gauge and the grouting pipe provided with the grouting valve are all fixed on the sealing cover in advance;
step two: fixedly mounting the outer tube outside the sleeve;
step three: pouring water flow into the annular cavity between the inner tube and the outer tube, and checking the tightness of the device;
step four: opening a grouting valve, injecting cement slurry into the well through a grouting pipe, and immediately closing the grouting valve after the injection is finished;
step five: observing the change condition of the negative pressure meter and the liquid level height in the annular cavity; the sealing performance of the device is judged by observing the liquid level height, the plugging condition of underground cement slurry is analyzed by the numerical change of a negative pressure meter, the larger the negative pressure value is, the larger the plugging diffusion radius is, and the plugging is completed after the negative pressure value is stable;
step six: after the plugging is finished, opening an observation valve, filling water through a grouting valve, and if the observation pipe returns water, indicating that the plugging is successful.
Compared with the prior art, the invention has the beneficial effects that: the invention applies the negative pressure piston principle to the inhibited plugging of the leakage stratum, designs a ground drilling negative pressure type plugging leakage stratum wellhead device, and encloses a cavity formed by the structures of an inner pipe, a sealing cover, a sleeve and the like, and reduces the speed of cement slurry diffusing into the leakage stratum by utilizing the cavity negative pressure between the top surface of the cement slurry and the sealing cover after the cement slurry is injected, so that the distribution of the cement slurry in the wellhead and the leakage stratum is more uniform, and the plugging effect after solidification is better; in the plugging process, through observing the liquid level height change between the negative pressure meter and the inner pipe and the outer pipe, the situation of cement paste plugging and the sealing condition of the device are known, so that an operator can conveniently perform timely adjustment operation, and good and stable plugging effect is guaranteed.
Drawings
FIG. 1 is a cross-sectional view of the device of the present invention;
FIG. 2 is a flow chart of the method of the present invention;
fig. 3 is a perspective view of the device of the present invention.
In the figure: 1. a sleeve; 2. an outer tube; 3. an outer tube ring; 4. an inner tube; 5. sealing cover; 6. an observation tube; 7. grouting pipe; 8. a negative pressure meter; 9. cement paste; 10. the formation is lost.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, in an embodiment of the invention, a ground drilling negative pressure type device for plugging a leakage stratum wellhead comprises a sleeve 1, an outer pipe 2 is sleeved outside the sleeve 1, the bottom of the outer pipe 2 is fixedly connected with an outer pipe ring 3, the inner wall of the outer pipe ring 3 is fixedly connected with the outer wall of the sleeve 1, an inner pipe 4 is arranged inside the sleeve 1, the bottom of the inner pipe 4 is fixedly connected with an inner pipe ring, the edge of the inner pipe ring is fixedly connected with the inner wall of the sleeve 1, the top of the inner pipe 4 is fixedly connected with a sealing cover 5, the middle part of the sealing cover 5 is fixedly connected with a grouting pipe 7, the middle part of the grouting pipe 7 is fixedly connected with a grouting valve, the other side of the top of the sealing cover 5 is fixedly provided with a negative pressure table 8, one side of the top of the sealing cover 5 is fixedly connected with an observation pipe 6, and the middle part of the observation pipe 6 is fixedly provided with an observation valve.
A working method of a ground drilling negative pressure type plugging leakage stratum wellhead device comprises the following steps:
first,: the inner pipe 4 is arranged in the underground sleeve 1, the sealing cover 5 is welded and fixed with the inner pipe 4, and the observation pipe 6 provided with the observation valve, the negative pressure meter 8 and the grouting pipe 7 provided with the grouting valve are all fixed on the sealing cover 5 in advance; the inner pipe ring is welded and fixed with the sleeve 1, then the outer pipe ring 3 is fixedly installed and welded and fixed with the sleeve 1, an annular cavity is formed by the outer side of the inner pipe 4, the inner side of the outer pipe 2 and the sealing cover 5, water flow is poured into the annular cavity, and the tightness of the device is tested;
one end of a grouting pipe 7 is fixedly connected with the output end of an external slurry pump, a grouting valve is opened, cement slurry 9 is injected into the well through the grouting pipe 7, and the grouting valve is closed immediately after the injection is finished;
over time, the liquid cement slurry 9 gradually moves down into the leakage stratum 10 at the two sides and solidifies, the pressure in the cavity between the top surface of the liquid cement slurry 9 and the top surface of the sealing cover 5 changes, the numerical value of the negative pressure meter 8 changes, the change condition of the numerical value of the negative pressure meter 8 is observed,
the negative pressure is formed in the indication analysis hole of the negative pressure table 8 to inhibit the diffusion speed and the solidification and blocking condition of the cement paste 9, the larger the negative pressure value is, the larger the blocking diffusion radius is, and the faster the negative pressure value is increased, the faster the blocking diffusion speed is; when the negative pressure is finally stabilized at a numerical value, the plugging and shaping are described, so that the analysis plugging effect plays a reference role;
meanwhile, the change of the liquid level height in the annular cavity is observed, when the liquid level height is obviously reduced in a short time, the problem of the connection tightness of the device is judged, and the re-detection and welding operation are needed;
after the plugging is finished, filling water into the grouting pipe 7 through an external water pump, opening an observation valve, and if the observation pipe 6 returns water, indicating that the plugging is successful; the negative pressure meter 8 can be replaced by a positive pressure meter, the observation valve is closed, water is injected through the grouting pipe 7, and the plugging effect is judged through the detection of the positive pressure meter on the water pressure; if the value of the negative pressure meter 8 continuously drops until normal pressure is restored, the value cannot be kept constant at a certain value, or if the condition that the observation tube 6 does not return water occurs, the plugging operation is considered to be unsuccessful, and the plugging operation can be carried out again after the device and the solidified cement slurry 9 are removed.
The present invention is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present invention.
Claims (3)
1. The utility model provides a ground drilling negative pressure formula shutoff leakage stratum wellhead assembly, includes sleeve pipe (1), its characterized in that, the outside cover of sleeve pipe (1) is equipped with outer tube (2), the bottom fixedly connected with outer tube ring (3) of outer tube (2), the inner wall of outer tube ring (3) and the outer wall fixed connection of sleeve pipe (1), the inside of sleeve pipe (1) is provided with inner tube (4), the bottom fixedly connected with inner tube ring of inner tube (4), the top fixedly connected with sealed lid (5) of inner tube (4), the middle part fixedly connected with slip casting pipe (7) of sealed lid (5), the middle part fixedly connected with slip casting valve of slip casting pipe (7), one side fixed mounting negative pressure table (8) at sealed lid (5) top;
cement slurry (9) is injected into the well through the grouting pipe (7), the cement slurry (9) gradually flows down into the leakage stratum (10) and is solidified, negative pressure is formed in the reading analysis hole of the negative pressure meter (8) to inhibit the diffusion speed and solidification blocking condition of the cement slurry (9), the larger the negative pressure value is, the larger the blocking diffusion radius is, and the faster the negative pressure value is increased, the faster the blocking diffusion speed is.
2. The ground drilling negative pressure type wellhead device for plugging the leakage stratum according to claim 1, wherein an observation pipe (6) is fixedly connected to the other side of the top of the sealing cover (5), and an observation valve is fixedly installed in the middle of the observation pipe (6).
3. The method for plugging the wellhead of the lost stratum by adopting the ground drilling negative pressure is characterized by comprising the following steps of:
step one: the inner pipe (4) is arranged in the underground sleeve (1), the sealing cover (5) is welded and fixed with the inner pipe (4), and the observation pipe (6) provided with the observation valve, the negative pressure meter (8) and the grouting pipe (7) provided with the grouting valve are all fixed on the sealing cover (5) in advance;
step two: the outer tube (2) is fixedly arranged outside the sleeve (1);
step three: pouring water flow into the annular cavity between the inner tube (4) and the outer tube (2), and checking the tightness of the device;
step four: opening a grouting valve, injecting cement slurry (9) into the well through a grouting pipe (7), and closing the grouting valve after the injection is finished;
step five: observing the change condition of the negative pressure meter (8) and the liquid level height in the annular cavity; the sealing performance of the device is judged by observing the liquid level height, and the diffusion speed and the solidification and blocking condition of the cement paste (9) are inhibited by forming negative pressure in an indication analysis hole of a negative pressure meter (8); the larger the negative pressure value is, the larger the blocking diffusion radius is, and the blocking is completed after the negative pressure value is stable;
step six: after the plugging is finished, opening an observation valve, filling water through a grouting valve, and if the water returns to the observation pipe (6), plugging is successful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210364477.2A CN114635659B (en) | 2022-04-07 | 2022-04-07 | Ground drilling negative pressure type device and method for plugging leakage stratum wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210364477.2A CN114635659B (en) | 2022-04-07 | 2022-04-07 | Ground drilling negative pressure type device and method for plugging leakage stratum wellhead |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114635659A CN114635659A (en) | 2022-06-17 |
| CN114635659B true CN114635659B (en) | 2023-10-31 |
Family
ID=81952463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210364477.2A Active CN114635659B (en) | 2022-04-07 | 2022-04-07 | Ground drilling negative pressure type device and method for plugging leakage stratum wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114635659B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116678802B (en) * | 2023-08-03 | 2023-11-14 | 常州市建筑材料研究所有限公司 | Prefabricated inspection well impermeability detection device and detection method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2371567C1 (en) * | 2008-03-17 | 2009-10-27 | Геннадий Иосифович Геймаш | Localisation method of leakage areas of production string |
| RU2397314C1 (en) * | 2009-07-28 | 2010-08-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Procedure for repair of annulus space of string borehole with two exposed formations |
| CN105114030A (en) * | 2015-08-20 | 2015-12-02 | 中国矿业大学 | Gas extraction drilling non-solidification constant-pressure slurry hole sealing method |
| US9631454B1 (en) * | 2016-09-07 | 2017-04-25 | China University Of Petroleum (East China) | Wellbore pressure control system and method for offshore well cementation stages |
| CN107218010A (en) * | 2017-08-03 | 2017-09-29 | 中煤科工集团西安研究院有限公司 | Broken hole drilling sleeve pipe water blockoff bridging plug and doube bridge plug shutoff method |
| CN109403914A (en) * | 2018-10-15 | 2019-03-01 | 山东交通学院 | Water column only starches two fluid grouting method in a kind of down-hole extra-deep hole drilling |
| CN109723404A (en) * | 2019-03-04 | 2019-05-07 | 中国煤炭地质总局广东煤炭地质局勘查院 | Coal measure gas prospect pit naked eye device for plugging and method |
| CN110080717A (en) * | 2019-06-17 | 2019-08-02 | 中国矿业大学 | A kind of gas pressure measurement method of horizontal drilling rapid hole sealing |
| CN112855070A (en) * | 2021-01-29 | 2021-05-28 | 北京永源思科技发展有限公司 | Method for treating integrity of shaft |
| CN113137204A (en) * | 2021-03-27 | 2021-07-20 | 山东新巨龙能源有限责任公司 | Hole sealing device for underground roof drilling and hole sealing method thereof |
| WO2021189932A1 (en) * | 2020-03-27 | 2021-09-30 | 甘肃省建材科研设计院有限责任公司 | Plugging method |
| CN113700452A (en) * | 2021-05-27 | 2021-11-26 | 河南中源化学股份有限公司 | Alkali-resistant cement slurry plugging method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2470852B (en) * | 2008-03-31 | 2012-09-12 | Cameron Int Corp | Methods and devices for isolating wellhead pressure |
| RU2449109C2 (en) * | 2010-07-14 | 2012-04-27 | Игорь Юрьевич Мацур | Method of emergency killing of well with submarine location of mouth and device for its implementation (versions) |
-
2022
- 2022-04-07 CN CN202210364477.2A patent/CN114635659B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2371567C1 (en) * | 2008-03-17 | 2009-10-27 | Геннадий Иосифович Геймаш | Localisation method of leakage areas of production string |
| RU2397314C1 (en) * | 2009-07-28 | 2010-08-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Procedure for repair of annulus space of string borehole with two exposed formations |
| CN105114030A (en) * | 2015-08-20 | 2015-12-02 | 中国矿业大学 | Gas extraction drilling non-solidification constant-pressure slurry hole sealing method |
| US9631454B1 (en) * | 2016-09-07 | 2017-04-25 | China University Of Petroleum (East China) | Wellbore pressure control system and method for offshore well cementation stages |
| CN107218010A (en) * | 2017-08-03 | 2017-09-29 | 中煤科工集团西安研究院有限公司 | Broken hole drilling sleeve pipe water blockoff bridging plug and doube bridge plug shutoff method |
| CN109403914A (en) * | 2018-10-15 | 2019-03-01 | 山东交通学院 | Water column only starches two fluid grouting method in a kind of down-hole extra-deep hole drilling |
| CN109723404A (en) * | 2019-03-04 | 2019-05-07 | 中国煤炭地质总局广东煤炭地质局勘查院 | Coal measure gas prospect pit naked eye device for plugging and method |
| CN110080717A (en) * | 2019-06-17 | 2019-08-02 | 中国矿业大学 | A kind of gas pressure measurement method of horizontal drilling rapid hole sealing |
| WO2021189932A1 (en) * | 2020-03-27 | 2021-09-30 | 甘肃省建材科研设计院有限责任公司 | Plugging method |
| CN112855070A (en) * | 2021-01-29 | 2021-05-28 | 北京永源思科技发展有限公司 | Method for treating integrity of shaft |
| CN113137204A (en) * | 2021-03-27 | 2021-07-20 | 山东新巨龙能源有限责任公司 | Hole sealing device for underground roof drilling and hole sealing method thereof |
| CN113700452A (en) * | 2021-05-27 | 2021-11-26 | 河南中源化学股份有限公司 | Alkali-resistant cement slurry plugging method |
Non-Patent Citations (1)
| Title |
|---|
| 胡郁乐 等.《深部地热钻井与成井技术》.中国地质大学出版社,2013,第261-262页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114635659A (en) | 2022-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114635659B (en) | Ground drilling negative pressure type device and method for plugging leakage stratum wellhead | |
| CN102721634B (en) | Method and device for in-situ penetration test by means of water injection under drilling pressure | |
| CN108036985B (en) | Device and method for manufacturing split grouting slurry vein and detecting permeability coefficient | |
| CN112253118A (en) | Gas injection and brine discharge device and method for salt cavern gas storage | |
| CN211973505U (en) | A slip casting system for different filling type karsts | |
| CN217580080U (en) | Drilling and grouting drilling tool for compaction grouting dry construction | |
| CN204662467U (en) | Underground structure dewatering well sealing water device | |
| CN110398313B (en) | Dynamic water pressure measuring device and method | |
| CN211849526U (en) | Deep basal pit secretly buries drainage well slip casting block structure | |
| CN114411700A (en) | Steel pile body for steel pipe grouting pile construction while sinking pipe and grouting | |
| CN204898670U (en) | Counter -force steel -pipe pile pile pulling device and clear native device are pressed to hole | |
| CN204662470U (en) | Relief well sealing device | |
| CN214993743U (en) | Grouting device for pile bottom karst cave of cast-in-place pile in limestone area | |
| CN208816083U (en) | A kind of Novel drilling grouting device | |
| CN110485483A (en) | A kind of device for simulating Foundation Pit Pouring catastrophe overall process | |
| CN110485478A (en) | A kind of casting head and its application method | |
| CN220769485U (en) | Grouting pipe for shield extrusion pump | |
| CN221167757U (en) | Hole sealing mechanism for grouting steel pipe pile for foundation reinforcement | |
| CN215759113U (en) | Deep basal pit bottom plugging drainage device | |
| CN110411643B (en) | Monitoring device and method for slurry pressure of hollow grouting anchor cable | |
| CN218622648U (en) | Constructional column bar planting pre-embedding device | |
| CN218935401U (en) | Grouting stop for filling pipe cement slurry | |
| CN213867786U (en) | Construction device for cast-in-situ concrete core of cored composite pile | |
| CN214884887U (en) | Assembled concrete vertical grouting sleeve with grouting port quick plugging structure | |
| CN204662473U (en) | A kind of relief well hermetically-sealed construction |
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 |