CN104165030B - Glass fiber reinforced plastic casing pipe string manufacturing process of ground coal-bed gas well - Google Patents
Glass fiber reinforced plastic casing pipe string manufacturing process of ground coal-bed gas well Download PDFInfo
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- CN104165030B CN104165030B CN201310245428.8A CN201310245428A CN104165030B CN 104165030 B CN104165030 B CN 104165030B CN 201310245428 A CN201310245428 A CN 201310245428A CN 104165030 B CN104165030 B CN 104165030B
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- reinforced plastic
- pipe string
- glass reinforced
- coal
- glass fiber
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- 239000011152 fibreglass Substances 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000003245 coal Substances 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000000605 extraction Methods 0.000 claims description 10
- 239000005337 ground glass Substances 0.000 claims 1
- 239000002990 reinforced plastic Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 23
- 239000002184 metal Substances 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 15
- 238000005065 mining Methods 0.000 abstract description 14
- 238000010276 construction Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 12
- 238000010168 coupling process Methods 0.000 description 12
- 238000005859 coupling reaction Methods 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 210000002445 nipple Anatomy 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012625 in-situ measurement Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to the field of coal-bed gas mining, in particular to the field of ground mining coal-bed gas production. The all-metal casing pipe process of a whole traditional pipe string is replaced by the glass fiber reinforced plastic casing pipe string process selected by a coal-bed section, a positioning link of the glass fiber reinforced plastic casing pipe string is added, through the control over the production process of the glass fiber reinforced plastic casing pipe string, the glass fiber reinforced plastic casing pipe string meeting requirements is produced in a manufactory, a metal casing pipe threaded connecting mode is adopted in the two sides of the pipe string, and the field construction process cannot be affected; meanwhile, after glass fiber reinforced plastic casing pipes are adopted in the coal-bed section, the risks in the coal mine coal mining process can be reduced, and coal mining efficiency is improved.
Description
Technical field
The present invention relates to coal-bed gas exploitation field, more particularly, to surface mining coal bed gas production field.
Background technology
Coal bed gas is commonly called as gas, is a kind of Unconventional gas, and its main component is methane, is a kind of particularly useful
Clean energy resource.Generally coal bed gas is stored in the form of free state and ADSORPTION STATE in coal seam, when colliery is in the process of mine coal
In, because the original stress state of coal-face there occurs change, the gas being stored in coal seam can be discharged, when concentration reaches
During to certain amount, it may occur that explosion accident.Therefore, colliery is before coal mining, first by the methane gas extraction in coal seam out, this
There is the probability of gas explosion in sample, used while can rise this gas collection and be used as the energy when can reduce mining, subtract
The pollution that few discharge direct to air is caused.At present, the mode of draining coal seam gas gas has two kinds：Ground extraction and down-hole are taken out
Adopt.Ground extraction is most mode that uses at present, and the method for employing is ground drilling, and steel sleeve is put into the wellhole being drilled
In, by processes such as well cementation, perforation, pressure break and minings, by the methane gas extraction in coal seam out.The advantage of this kind of technique
It is：Steel sleeve has good intensity index, when underground is subject to certain crustal stress to act on, should not deform, meanwhile, gold
Category screw thread is easy to sealing, when carrying out pressure break, with higher pressure, has the disadvantage to use after metal sleeve, after to surface mining
Coal seam section when carrying out underground coal mining, very dangerous, down-hole coal excavation majority uses cutting coal machine, when mining, coal cutting opportunity
Meeting flashing, sets off an explosion to after metal sleeve.At present during ground coal bed gas extraction, using this construction technology,
Go into operation many extraction gas wells.For the coal seam after ground extraction, in down-hole coal excavation, after running into steel sleeve, the side of employing
Method is to determine the exact position of steel sleeve in advance, is carried out with very slow speed during fast close metal sleeve, and big machinery is difficult
To play a role, now mostly in the form of manpower excavation, while metal sleeve is all excavated, using traction or other
Mode removes steel sleeve, greatly have impact on coal mining speed, while also bringing many potential safety hazards.
For these reasons, we are improved the steel sleeve technique being put into after drilling, and full section is adopted into steel sleeve
Pattern, be changed to part and adopt steel sleeve, select glass reinforced plastic sleeve in coal seam section, this material be composite, so carrying out
During coal mining, what coal-winning machine ran into is composite, can directly be smashed glass reinforced plastic sleeve, will not be produced between metal
Contact, so as to avoid pyrophoric possibility is produced, and reduces the probability that spark sets off an explosion.
Traditional steel sleeve downhole technique is as follows：
By the bored well depth of well logging determination and coal seam position, every casing length size under measurement institute, by set
Pipe pipe nipple is adjusting coal seam position, it is ensured that in coal seam section be one whole sleeve pipe, section hoop is occurred without, so in perforation, it is ensured that will
Steel sleeve is effectively shot through, it is ensured that followed by pressure break and mining operation be normally carried out.
The content of the invention
The invention provides a kind of steel sleeve that uses of coal bed gas well easy to use, low cost and glass reinforced plastic sleeve pipe string
Manufacture craft.
Glass reinforced plastic sleeve is nonmetallic composite, in order to ensure the anti-internal pressure and outer crushing strength of glass reinforced plastic sleeve,
All it is in manufacturing process in winding from level to level, therefore adhesive strength between layers is a weak link, and pipe
Both sides carry connection screw thread, and the intensity and its toughness between screw thread and pipe matrix is very low, such as directly by the steel sleeve of coal seam section
Glass reinforced plastic sleeve is replaced by, according to normal downhole technique, need to be threadedly coupled at the scene, glass reinforced plastic sleeve matrix can be caused
Material be subject to it is very big extrude, be easily caused interlayer absciss layer, cause the intensity decreases of tube wall, it is impossible to bear pressure break and crustal stress is produced
Raw ambient pressure, directly affects the life-span of coal seam air extraction well；Further, since the pipe screw thread poor toughness of fiberglass both sides,
During joint connection in site, the numerical value of screw thread moment of torsion is uncontrollable, and moment of torsion not enough, can cause the sealing of pipe not enough, and moment of torsion is crossed conference and led
Cause screw thread to damage, tube failure can be descended when serious, therefore to ensure the reliability sealed between glass reinforced plastic sleeve and steel sleeve at the scene
Property, it is difficult to realize according to existing process.
For these reasons, pre-production glass reinforced plastic sleeve pipe string technique and jointing be we have invented.
What the present invention was realized in：
First, using fw frp bushing installation, required glass reinforced plastic sleeve of going into the well is made, using lathe or is taken
The form of the demoulding glass reinforced plastic sleeve both sides by required thread making out, according to the present invention technique and jointing,
Directly glass reinforced plastic sleeve is connected into into pipe string with the metal sleeve for positioning, this avoid and descend glass reinforced plastic sleeve to make at the scene
Into damage, while the connection screw thread of glass reinforced plastic sleeve both sides also will not be damaged, it is ensured that between them connect sealing
Property, because the pipe string both sides for being formed are metal tube, descend metal sleeve consistent with scene, simplify the difficulty gone into the well.Pass through
Technique adjustment of the present invention to downhole pipe string, realizes and uses glass reinforced plastic sleeve for coal seam section, and other positions continue to adopt
The method of going into the well of steel sleeve, after solving ground extraction coal bed gas, down-hole coal excavation collides and produces pyrophoric danger, improves
The efficiency of down-hole coal excavation, using the present invention, by the connection of the glass reinforced plastic sleeve for being difficult at the scene and controlling and metal sleeve
Problem, is converted into the connectivity problem of metal sleeve and metal sleeve, improves the operability of lower casing, while also ensure that
The sealing and respective strengths index of lower casing pipe string, due to the standard that glass reinforced plastic sleeve both sides increased orientation spool it is long
Degree, also solves precision problem during perforation.
Description of the drawings
Below in conjunction with the accompanying drawings the specific embodiment to inventing is described in further detail.
Fig. 1 is the technological process of the making glass reinforced plastic sleeve string of the present invention.
First, four parts of parallel fabrication glass reinforced plastic sleeve pipe string, the orientation spool of both sides, glass reinforced plastic sleeve both sides spiral shell
Line and the coupling adapter of glass reinforced plastic sleeve both sides, detect respectively the quality of screw thread, it is qualified after assembled, and determine screw thread
Connection moment of torsion, finally bulge test is carried out to whole pipe string, after meeting the requirements, finished product warehouse-in.
Fig. 2 is the glass reinforced plastic sleeve string and coupling adapter of the present invention.
(1) be metal sleeve used by scene section hoop, can dock with metal sleeve screw thread at the scene, (2) and (6) are used for
The orientation spool of in-situ measurement glass reinforced plastic sleeve accurate location, improves located perforating precision, (3) and (5) glass reinforced plastic sleeve with calmly
The crossover sub that position pipe nipple is attached, (7) and (8) sealing device, it is ensured that the sealing of glass reinforced plastic sleeve, (4) fiberglass
Sleeve pipe.
Specific embodiment
Embodiment one：
First all parts used by pipe string are processed, i.e.,：Glass reinforced plastic sleeve both sides screw thread is gone out using lathe process, is protected
Card thread head is vertical with glass reinforced plastic sleeve axis, processes the conversion of the connection between glass reinforced plastic sleeve and pipe string orientation spool and connects
Head, locating and machining pipe nipple processes potted component.Assembled after all component processings are finished, according to following scheme during assembling
Carry out：
(1), with lathe process glass reinforced plastic sleeve both sides screw thread.
(2) coupling adapter between glass reinforced plastic sleeve and orientation spool, is processed.
(3) seal member, is placed inside coupling adapter.
(4), determine that fiberglass is threadedly coupled, peak torque when screw thread is damaged.
(5), under the premise of less than peak torque, connect glass reinforced plastic sleeve, constitute glass reinforced plastic sleeve pipe string.
(6), steel sleeve connection coupling is installed on the upside of pipe string.
(7), to pipe string pressure testing.
Embodiment two：
First all parts used by pipe string are processed, i.e.,：Glass reinforced plastic sleeve both sides are processed using machining mode
The conical surface, it is ensured that conical surface end is vertical with glass reinforced plastic sleeve axis, the connection processed between glass reinforced plastic sleeve and pipe string orientation spool turns
Changing-over head, locating and machining pipe nipple processes potted component.Assembled after all component processings are finished, according to as follows during assembling
Scheme is carried out：
(1) the glass reinforced plastic sleeve both sides conical surface, is processed, it is ensured that end face is vertical with glass reinforced plastic sleeve axis.
(2) coupling adapter between glass reinforced plastic sleeve and orientation spool, is processed.
(3), the glass reinforced plastic sleeve conical surface is uniformly coated with bonding agent.
(4), coupling adapter connection fiber glass reinforced plastic cover tube side, coats releasing agent.
(5), coupling adapter is screwed into into the glass reinforced plastic sleeve conical surface, and carries out heating cure.
(6) coupling adapter, is removed, glass reinforced plastic sleeve conical surface thread quality is checked.
(7) seal member, is placed inside coupling adapter.
(8) when, determining that fiberglass is threadedly coupled, peak torque when screw thread is damaged.
(9), connect glass reinforced plastic sleeve, coupling adapter, orientation spool, less than peak torque, constitute glass reinforced plastic sleeve
Pipe string.
(10), steel sleeve connection coupling is installed on the top of pipe string.
(11), to pipe string pressure testing.
Claims (1)
1. the manufacture craft of the glass reinforced plastic sleeve pipe string of a kind of ground coal bed gas well, it is characterised in that glass reinforced plastic sleeve both sides are
Orientation spool, for determining glass reinforced plastic sleeve position, realizes that perforation is positioned to glass reinforced plastic sleeve, and pipe string two ends are steel sleeve spiral shell
Line, fiber glass reinforced plastic cover pipe screw thread is not subject to moment of torsion when going into the well, it is to avoid fiber glass reinforced plastic cover pipe screw thread sustains damage, pre-fabricated using ground
Glass reinforced plastic sleeve pipe string, replace coal seam in steel sleeve, be directly used in ground extraction coal seam gas production well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310245428.8A CN104165030B (en) | 2013-06-20 | 2013-06-20 | Glass fiber reinforced plastic casing pipe string manufacturing process of ground coal-bed gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310245428.8A CN104165030B (en) | 2013-06-20 | 2013-06-20 | Glass fiber reinforced plastic casing pipe string manufacturing process of ground coal-bed gas well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104165030A CN104165030A (en) | 2014-11-26 |
| CN104165030B true CN104165030B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310245428.8A Active CN104165030B (en) | 2013-06-20 | 2013-06-20 | Glass fiber reinforced plastic casing pipe string manufacturing process of ground coal-bed gas well |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727756B (en) * | 2015-02-10 | 2017-06-13 | 中国石油天然气股份有限公司 | Short joint for pressure test of casing of well plugging device |
| WO2022036413A1 (en) * | 2020-08-21 | 2022-02-24 | Newcrest Mining Limited | Hydraulic fracturing a rock mass |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893658A (en) * | 1987-05-27 | 1990-01-16 | Sumitomo Metal Industries, Ltd. | FRP pipe with threaded ends |
| CN2809190Y (en) * | 2005-07-05 | 2006-08-23 | 天津钢管集团有限公司 | End face opposite jacking torsion-bearing connection structure for casing |
| CN101915062A (en) * | 2010-07-20 | 2010-12-15 | 中国矿业大学(北京) | Glass reinforced plastic sleeve used for coal bed gas well |
| CN101936153A (en) * | 2010-09-14 | 2011-01-05 | 中矿瑞杰(北京)科技有限公司 | Method for exploiting coal bed gas by water power spray drilling for releasing pressure |
| CN101975050A (en) * | 2010-09-17 | 2011-02-16 | 北京奥瑞安能源技术开发有限公司 | Construction method of coal bed gas horizontal well and vertical drainage well in multi-objective layer geologic environment |
| CN101994505A (en) * | 2010-09-17 | 2011-03-30 | 北京奥瑞安能源技术开发有限公司 | Drilling construction method by cooperation of horizontal wells and extraction straight wells for coal bed methane in multiple objective layers |
| CN101994503A (en) * | 2010-09-17 | 2011-03-30 | 北京奥瑞安能源技术开发有限公司 | Production increasing method of coalbed gas |
| CN201802366U (en) * | 2010-10-13 | 2011-04-20 | 恒信泰达能源科技咨询(北京)有限责任公司 | High-pressure injection side-drilling small borehole tool device |
| CN202165023U (en) * | 2011-07-14 | 2012-03-14 | 西安百衡伯仲复合材料有限公司 | Glass fiber reinforced plastic sleeve for exploitation of coalbed methane |
-
2013
- 2013-06-20 CN CN201310245428.8A patent/CN104165030B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893658A (en) * | 1987-05-27 | 1990-01-16 | Sumitomo Metal Industries, Ltd. | FRP pipe with threaded ends |
| CN2809190Y (en) * | 2005-07-05 | 2006-08-23 | 天津钢管集团有限公司 | End face opposite jacking torsion-bearing connection structure for casing |
| CN101915062A (en) * | 2010-07-20 | 2010-12-15 | 中国矿业大学(北京) | Glass reinforced plastic sleeve used for coal bed gas well |
| CN101936153A (en) * | 2010-09-14 | 2011-01-05 | 中矿瑞杰(北京)科技有限公司 | Method for exploiting coal bed gas by water power spray drilling for releasing pressure |
| CN101975050A (en) * | 2010-09-17 | 2011-02-16 | 北京奥瑞安能源技术开发有限公司 | Construction method of coal bed gas horizontal well and vertical drainage well in multi-objective layer geologic environment |
| CN101994505A (en) * | 2010-09-17 | 2011-03-30 | 北京奥瑞安能源技术开发有限公司 | Drilling construction method by cooperation of horizontal wells and extraction straight wells for coal bed methane in multiple objective layers |
| CN101994503A (en) * | 2010-09-17 | 2011-03-30 | 北京奥瑞安能源技术开发有限公司 | Production increasing method of coalbed gas |
| CN201802366U (en) * | 2010-10-13 | 2011-04-20 | 恒信泰达能源科技咨询(北京)有限责任公司 | High-pressure injection side-drilling small borehole tool device |
| CN202165023U (en) * | 2011-07-14 | 2012-03-14 | 西安百衡伯仲复合材料有限公司 | Glass fiber reinforced plastic sleeve for exploitation of coalbed methane |
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| Publication number | Publication date |
|---|---|
| CN104165030A (en) | 2014-11-26 |
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