CN111305272A - Large-diameter inclined pipe for well accident treatment and construction method thereof - Google Patents
Large-diameter inclined pipe for well accident treatment and construction method thereof Download PDFInfo
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- CN111305272A CN111305272A CN201911324944.3A CN201911324944A CN111305272A CN 111305272 A CN111305272 A CN 111305272A CN 201911324944 A CN201911324944 A CN 201911324944A CN 111305272 A CN111305272 A CN 111305272A
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002002 slurry Substances 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000004429 Calibre Substances 0.000 claims 1
- 238000004080 punching Methods 0.000 abstract 1
- 239000011440 grout Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention is suitable for the technical field of water well accident treatment, and provides a large-caliber inclined tube for water well accident treatment and a construction method thereof, wherein the inclined tube comprises a tube body, the outer wall of the tube body is provided with an inclined plane, the wide opening end of the tube body is provided with a straight tube section, the narrow opening section of the tube body is provided with a straight arc sheet, the straight arc sheet is provided with two mounting holes, the tube body with the inclined plane is arranged, the wide opening end of the tube body is provided with a straight tube section, the narrow opening section of the tube body is provided with a straight arc sheet, in the construction process, the tube body is put into a water well, so that the residual drill rod of an inclined horizontal drill bit enters the tube body, then cement slurry is injected to fix the tube body, then small-hole deflection is carried out by adopting a cone and a powder taking tube in sequence, finally, a cone with a larger diameter and a longer powder taking tube are adopted to carry out punching and drilling so as to drill into a target, time and economic losses are reduced.
Description
Technical Field
The invention belongs to the technical field of water well accident treatment, and particularly relates to a large-diameter inclined pipe for water well accident treatment and a construction method thereof.
Background
During the construction of large-diameter water wells, when the wall of the well is broken or special strata are encountered, the accidents of drill burying, drill blocking or drill burning often occur.
The existing treatment method has certain defects in construction, generally adopts strong pulling, hoisting, reverse rod, expanding sweeping, taper hook, blasting and the like, but is difficult to bypass an accident section, so that economic loss is easily increased.
Disclosure of Invention
The invention provides a large-diameter inclined pipe for well accident treatment and a construction method thereof, and aims to solve the problems that an accident section is difficult to bypass and economic loss is easy to increase.
The invention is realized in this way, a large-caliber inclined pipe for water well accident treatment and its construction method, including the pipe body;
the outer wall of the pipe body is provided with an inclined plane, the wide-mouth end of the pipe body is provided with a straight pipe section, the narrow-mouth section of the pipe body is provided with a straight arc piece, and the straight arc piece is provided with two mounting holes.
Preferably, the open edge of the straight tube section has serrations.
Preferably, the length of the pipe body is 9.3m, the outer diameter of the pipe body is 325mm, and the thickness of the pipe body is 10 mm;
the length of the straight pipe section is 1.6m, and the length of the straight arc piece is 0.2 m.
Preferably, the diameter of the mounting hole is 19 mm.
Preferably, the two mounting holes are respectively 0.1m and 0.18m away from the end of the straight arc piece and are positioned on the central axis of the straight arc piece in the length direction.
Preferably, two grout inlet holes are formed in the straight pipe section.
The invention also provides a construction method of the large-diameter inclined pipe for water well accident treatment, which is suitable for any one of the large-diameter inclined pipes for water well accident treatment and comprises the following steps:
s1, cleaning the bottom of the accident water well by using a cylindrical drill bit, and determining the depth of the bottom of the hole;
s2, connecting the drill rod to the pipe body, placing the pipe body into a water well with the straight pipe section of the pipe body facing downwards, and continuously adjusting the direction by manually turning the drill rod when the pipe body approaches an accident section so that the residual drill rod of the recumbent drill bit enters the pipe body;
s3, separating the drill rod and the pipe body, and placing the pipe body on the top of the accident drill bit;
s4, preparing cement slurry;
s5, placing the drill rod at the bottom of the pipe body, and injecting cement slurry to fix the pipe body;
s6, after the cement slurry is poured for 2.5 hours, flushing 1m of cement slurry above the pipe body by using slurry;
s7, after slurry is poured for 24 hours, a cone with the diameter of 196mm and a powder taking pipe with the diameter of 180mm are adopted, the drill is lifted once every 3m of drilling at the bottom of the water well until the depth of the hole is 5m higher, and then the cone with the diameter of 245mm and the powder taking pipe with the diameter of 219mm are used for reaming until the depth of the hole is 5m higher;
s8, smoothly passing through the accident section by using a roller cone with the diameter of 245mm and a powder taking pipe drilling tool with the diameter of 219mm, drilling by using a roller cone with the diameter of 294mm and a powder taking pipe with the diameter of 273mm, keeping uniform drilling depth, and drilling to a target layer.
Preferably, the cement slurry has a water-cement ratio of 1:1, and 0.5kg of triethanolamine and 10kg of common salt are added into each cubic meter of the cement slurry.
Preferably, the cement grout has a pouring height of 10 m.
Compared with the prior art, the invention has the beneficial effects that: the invention relates to a large-caliber inclined pipe for well accident treatment and a construction method thereof.A pipe body with an inclined plane is arranged, a straight pipe section is arranged at the wide opening end of the pipe body, a straight arc piece is arranged at the narrow opening section of the pipe body, the pipe body is lowered into a well during construction, residual drill rods of an inclined horizontal drill bit enter the pipe body, cement slurry is injected to fix the pipe body, then small-hole deflection is carried out by sequentially adopting a cone and a powder taking pipe, and finally the cone and the powder taking pipe with longer diameters are adopted to carry out drilling and drilling so as to drill a target stratum.
Drawings
Fig. 1 is a side view of a tubular body of the present invention.
Fig. 2 is a top view of the tube of the present invention.
Fig. 3 is a schematic view of the pipe laying construction of the pipe body of the present invention.
In the figure: the drilling tool comprises a pipe body 1, an inclined plane 2, a straight pipe 3, a straight arc piece 4, a mounting hole 5, a sawtooth part 6 and a drill rod 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, the present invention provides a technical solution: a large-diameter inclined pipe for treating water well accident and its construction method are disclosed, the inclined pipe includes a pipe body 1.
The outer wall of the pipe body 1 is provided with an inclined plane 2, the wide opening end of the pipe body 1 is provided with a straight pipe section 3, the narrow opening section of the pipe body 1 is provided with a straight arc piece 4, and the straight arc piece 4 is provided with two mounting holes 5.
The open edge of the straight tube section 3 has serrations 6. The length of the pipe body 1 is 9.3m, the outer diameter is 325mm, and the thickness is 10 mm. The length of the straight pipe section 3 is 1.6m, and the length of the straight arc piece 4 is 0.2 m. The diameter of the mounting hole 5 is 19 mm. The two mounting holes 5 are respectively 0.1m and 0.18m away from the end part of the straight arc piece 4 and are positioned on the central axis of the straight arc piece 4 in the length direction. Two grout inlet holes are formed in the straight pipe section 3.
When the stratum is complete, the deflecting and reducing are close to the upper aperture as much as possible, and the influence on the engineering quality is reduced. When the stratum is weak or broken, the caliber can be properly reduced, but the caliber is not reduced too much to influence the subsequent work. In this embodiment, the construction section bore is 350mm, and body 1 adopts seamless steel tube processing, and tubular product length is 9.3m, and the top is left and is established the high straight arc piece of 0.2m, and 2 high 7.5m on inclined plane, the inclination is 2.45, and the lower part is left and is established the complete straight tube section 3 of 1.6m, and bottom 0.2m is sawtooth portion 6. The arc length of the straight arc piece is 0.2m, and a mounting hole 5 with the diameter of 19mm is drilled at the position 0.1m and 0.18m away from the top edge by using an electric hand drill and is used for penetrating and connecting with a 16mm bolt of a drill rod 7. Constructors can weld 20mm supporting steel plates at positions 2.5m and 5.0m away from the top of the inclined plane, the supporting steel plates are perpendicular to the inclined tube, and the heights of the supporting steel plates are 0.1m and 0.2m respectively so as to prevent the inclined plane 2 from deforming. The height of 0.2m at the bottom of the inclined tube is cut into a saw-toothed shape, and the tooth pitch is 0.1m, so that the inclined tube is prevented from turning during drilling. And 2 slurry inlet holes with the diameter of 20mm are cut at the position of 0.4m on the upper part of the sawtooth part 6, so that the strength and the stability of the inclined tube are ensured. In order to ensure that the inclined plane 2 is smooth, the inclined plane 2 is polished by a manual angle grinder, and the cut inclined steel pipe serving as the inclined plane 2 is reversely buckled on the inclined pipe to be welded and reinforced.
The construction method of the large-caliber inclined pipe for treating the water well accident comprises the following steps:
s1, firstly, cleaning the bottom of the accident water well by using a cylindrical drill bit with the diameter of 219mm, determining the depth of the bottom of the accident water well, and providing data for judging whether the inclined tube is placed in place.
S2, connecting the drill rod 7 to the straight arc piece 4 of the pipe body 1 through two bolts, placing the pipe body 1 into a water well with the straight pipe section 3 of the pipe body 1 facing downwards, and continuously adjusting the direction by manually turning the drill rod 7 when the accident section is approached so that the residual drill rod of the inclined horizontal drill bit enters the pipe body 1.
And S3, loosening the winch, shearing the two bolts by using the self weight of the drill rod 7, separating the drill rod 7 and the pipe body 1, and placing the pipe body 1 at the top of the accident drill bit.
And S4, preparing cement slurry.
The cement slurry has a water-cement ratio of 1:1, and 0.5kg of triethanolamine and 10kg of salt are added to each cubic meter of cement slurry.
And S5, placing the drill rod 7 at the bottom of the pipe body 1, and injecting cement grout to fix the pipe body 1, wherein the pouring height of the cement grout is 10 m.
And S6, according to the solidification condition of the ground sample, after 2.5 hours of cement slurry is poured, flushing 1m of cement slurry above the pipe body 1 by using slurry.
S7, after the grout is poured for 24 hours, the cement grout reaches the pipe fixing strength, and small hole deflection is started: and after slurry is poured for 24 hours, a cone with the diameter of 196mm and a powder taking pipe with the diameter of 180mm are adopted, the length of the powder taking pipe is 6m, the drill bit is lifted once every 3m is drilled at the bottom of the water well, the abrasion condition of the drill bit is observed, the drill bit penetrates the bottom of the inclined plane to the depth of 5m, and then the cone with the diameter of 245mm and the powder taking pipe with the diameter of 219mm are used for reaming the hole to the depth of 5 m.
S8, large hole drilling: and smoothly passing a roller cone with the diameter of 245mm and a powder taking pipe drilling tool with the diameter of 219mm through the accident section, drilling by using the roller cone with the diameter of 294mm and the powder taking pipe with the diameter of 273mm, controlling the secondary footage to be not more than 5m, keeping uniform footage, and drilling to a target layer. And after the well accident is treated, lowering the well pipe to fix the pipe and stop water, and completing the rest of work load.
The invention relates to a large-caliber inclined pipe for well accident treatment and a construction method thereof.A pipe body with an inclined plane is arranged, a straight pipe section 3 is arranged at the wide opening end of the pipe body 1, a straight arc piece 4 is arranged at the narrow opening section of the pipe body 1, and in construction, the pipe body 1 is lowered into a well, so that residual drill rods of an inclined horizontal drill bit enter the pipe body 1, cement slurry is injected to fix the pipe body 1, then small-hole deflection is carried out by sequentially adopting a cone and a powder taking pipe, and finally, a cone with a longer diameter and the powder taking pipe are adopted to carry out drilling and drilling so as to drill a target stratum.
If a complicated and difficult-to-handle accident occurs in the hole, a long time is needed for the treatment. Economically and in time terms, if the drilling is performed after the accident is processed, a great waste can be caused. If geological conditions and other construction structures allow for this to be solved by deflecting the pipe to create a man-made slant hole, it is time and cost effective and ensures the required drilling quality.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a well accident disposal is with heavy-calibre inclined tube which characterized in that: comprises a pipe body (1);
the outer wall of the pipe body (1) is provided with an inclined plane (2), the wide-mouth end of the pipe body (1) is provided with a straight pipe section (3), the narrow-mouth section of the pipe body (1) is provided with a straight arc piece (4), and the straight arc piece (4) is provided with two mounting holes (5).
2. A large-caliber deflecting pipe for water well accident treatment as claimed in claim 1, wherein: the opening edge of the straight pipe section (3) is provided with a sawtooth part (6).
3. A large-caliber deflecting pipe for water well accident treatment as claimed in claim 1, wherein: the length of the pipe body (1) is 9.3m, the outer diameter is 325mm, and the thickness is 10 mm;
the length of the straight pipe section (3) is 1.6m, and the length of the straight arc piece (4) is 0.2 m.
4. A large-caliber deflecting pipe for water well accident treatment as claimed in claim 3, wherein: the diameter of the mounting hole (5) is 19 mm.
5. The large-caliber deflecting pipe for water well accident treatment as claimed in claim 4, wherein: the two mounting holes (5) are respectively 0.1m and 0.18m away from the end part of the straight arc piece (4) and are positioned on the central axis of the straight arc piece (4) in the length direction.
6. A large-caliber deflecting pipe for water well accident treatment as claimed in claim 1, wherein: two slurry inlet holes are formed in the straight pipe section (3).
7. A construction method of a large-diameter deviant pipe for water well accident disposal, which is applied to any one of the large-diameter deviant pipes for water well accident disposal described in claims 1 to 6, characterized in that: the method comprises the following steps:
s1, cleaning the bottom of the accident water well by using a cylindrical drill bit, and determining the depth of the bottom of the hole;
s2, connecting the drill rod (7) to the pipe body (1), placing the pipe body (1) into a water well with the straight pipe section (3) of the pipe body (1) facing downwards, and continuously adjusting the direction by manually turning the drill rod (7) when the accident section is approached so that the residual drill rod of the inclined drill bit enters the pipe body (1);
s3, separating the drill rod (7) and the pipe body (1), and placing the pipe body (1) at the top of the accident drill bit;
s4, preparing cement slurry;
s5, placing the drill rod (7) at the bottom of the pipe body (1), and injecting cement slurry to fix the pipe body (1);
s6, after the cement slurry is poured for 2.5 hours, the cement slurry 1m above the pipe body (1) is washed by the thin slurry;
s7, small hole deflection: after slurry is poured for 24 hours, a cone with the diameter of 196mm and a powder taking pipe with the diameter of 180mm are adopted, the drilling is carried out once every 3m of drilling at the bottom of the water well until the depth of the hole is 5m higher, and then the cone with the diameter of 245mm and the powder taking pipe with the diameter of 219mm are used for reaming until the depth of the hole is 5m higher;
s8, large hole drilling: and a roller cone with the diameter of 245mm and a powder taking pipe drilling tool with the diameter of 219mm smoothly pass through the accident section, and a roller cone with the diameter of 294mm and a powder taking pipe with the diameter of 273mm are used for drilling, so that the uniform footage is kept, and the drilling is carried out to the target layer.
8. The construction method of a large-caliber slant pipe for water well accident treatment as claimed in claim 7, wherein: the cement slurry has a water-cement ratio of 1:1, and 0.5kg of triethanolamine and 10kg of salt are added into each cubic meter of cement slurry.
9. The construction method of a large-caliber slant pipe for water well accident treatment as claimed in claim 7, wherein: the pouring height of the cement slurry is 10 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324944.3A CN111305272A (en) | 2019-12-20 | 2019-12-20 | Large-diameter inclined pipe for well accident treatment and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324944.3A CN111305272A (en) | 2019-12-20 | 2019-12-20 | Large-diameter inclined pipe for well accident treatment and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111305272A true CN111305272A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911324944.3A Pending CN111305272A (en) | 2019-12-20 | 2019-12-20 | Large-diameter inclined pipe for well accident treatment and construction method thereof |
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| CN (1) | CN111305272A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6318480B1 (en) * | 1999-12-15 | 2001-11-20 | Atlantic Richfield Company | Drilling of laterals from a wellbore |
| CN201908572U (en) * | 2010-12-17 | 2011-07-27 | 中国石油集团长城钻探工程有限公司 | Modular combined whipstock |
| US20120152566A1 (en) * | 2010-12-20 | 2012-06-21 | Baker Hughes Incorporated | Extended reach whipstock and methods of use |
| CN103939018A (en) * | 2014-05-15 | 2014-07-23 | 中国石油化工股份有限公司 | Barrier-avoiding sidetracking technology for workover rig |
| CN105275396A (en) * | 2015-11-05 | 2016-01-27 | 中国海洋石油总公司 | Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle |
| CN206972163U (en) * | 2017-07-06 | 2018-02-06 | 贵州省地质矿产勘查开发局111地质大队 | Slope guiding device directly connected with sleeve |
-
2019
- 2019-12-20 CN CN201911324944.3A patent/CN111305272A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6318480B1 (en) * | 1999-12-15 | 2001-11-20 | Atlantic Richfield Company | Drilling of laterals from a wellbore |
| CN201908572U (en) * | 2010-12-17 | 2011-07-27 | 中国石油集团长城钻探工程有限公司 | Modular combined whipstock |
| US20120152566A1 (en) * | 2010-12-20 | 2012-06-21 | Baker Hughes Incorporated | Extended reach whipstock and methods of use |
| CN103939018A (en) * | 2014-05-15 | 2014-07-23 | 中国石油化工股份有限公司 | Barrier-avoiding sidetracking technology for workover rig |
| CN105275396A (en) * | 2015-11-05 | 2016-01-27 | 中国海洋石油总公司 | Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle |
| CN206972163U (en) * | 2017-07-06 | 2018-02-06 | 贵州省地质矿产勘查开发局111地质大队 | Slope guiding device directly connected with sleeve |
Non-Patent Citations (1)
| Title |
|---|
| 刘小康: "小径偏斜技术应用实例", 《中国煤田地质》 * |
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Application publication date: 20200619 |
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