CN104481464B - A kind of nonmetal flexible composite coiled tubing extracting device of oil - Google Patents
A kind of nonmetal flexible composite coiled tubing extracting device of oil Download PDFInfo
- Publication number
- CN104481464B CN104481464B CN201410726144.5A CN201410726144A CN104481464B CN 104481464 B CN104481464 B CN 104481464B CN 201410726144 A CN201410726144 A CN 201410726144A CN 104481464 B CN104481464 B CN 104481464B
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- Prior art keywords
- oil
- well
- metal composite
- composite pipe
- layer
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- 229910052755 nonmetal Inorganic materials 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 239000002905 metal composite material Substances 0.000 claims abstract description 38
- 239000003129 oil well Substances 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 43
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 239000011241 protective layer Substances 0.000 claims description 10
- 150000002843 nonmetals Chemical class 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000002421 anti-septic effect Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 8
- 238000004073 vulcanization Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 229920002521 macromolecule Polymers 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 208000001613 Gambling Diseases 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004132 cross linking Methods 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
- 239000007769 metal material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000004804 winding 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention belongs to technical field of mechanical oil extraction, specifically provide a kind of nonmetal flexible composite coiled tubing extracting device of oil, including well mouth hanger, and crossover sub, oil well pump, screen casing and the plug being from top to bottom sequentially connected, the oil well pump is connected by sucker rod with well mouth hanger, non-metal composite pipe is connected between the well mouth hanger and crossover sub, the sucker rod is passed through inside non-metal composite pipe.The invention substitutes original metal oil conduit by non-metal composite pipe, and construction operation amount is greatly lowered, and reduces workmen's labor intensity, improves the antiseptic power of tubing string, extends the normal production time, simplifies flow string structure.
Description
Technical field
The invention belongs to technical field of mechanical oil extraction, and in particular to a kind of nonmetal flexible composite coiled tubing extracting device of oil.
Background technology
At present, having for oil field is needed to be used as passage by metal oil conduit in bar extracting device of oil, and liquid is delivered to ground, gold
Single connection is needed during category oil pipe operation, construction operation amount is larger, personnel's operation intensity is big, and construction period is longer；While metal
Oil pipe is vulnerable to the corrosiveness of down-hole liquid in underground work, and therefore use time can shorten.
Non-metal composite pipe, it is maximum at present in oil field gathering and transportation pipeline, filling pipe and natural gas line extensive use
Advantage is that operating speed is fast, easy construction, and it is corrosion-resistant, can effectively reduce cost.But some domestic announced at present are soft
Property multiple tube patent of invention in, be concentrated mainly on surface gathering and transferring, be related to oil well application it is less.
It is defeated that such as Chinese patent CN202176838U discloses a kind of petroleum gas industrial nonmetal flexible composite high pressure
Pipe, including nylon core are sent, nylon outer core is coated with steel wire winding enhancement layer and overcoat, described nylon core and is provided with
The telescoping tube that steel plate occlusion is rolled is folded by pros-and-cons type.The nonmetal flexible composite high pressure conveyer pipe is used for surface gathering and transferring,
Its internal pressure resistance ability preferably, but can not bear excessive pulling force, it is impossible to be used in underground.
Chinese patent CN102889437A discloses a kind of flexible compound oil pipe, including in the macromolecule of pumped (conveying) medium
Tube layer, is arranged in the macromolecule macromolecule external tube layer on the outside of tube layer, is arranged in the macromolecule and is used on tube layer outer wall
In the resistance to compression layer of resistance internal pressure, and it is arranged at the tension on the inwall of the macromolecule external tube layer for resisting external tensile force
Layer.The flexible compound oil pipe can be used for underground, and this flexible compound oil pipe can be with Continuous maching, and its length is not limited by processing
System, it is to avoid the operation being connected with each other between many flexible compound oil pipes, but and do not specify and its application and use ability, often
Rule oil pumper production can not be used normally.
Chinese patent CN202531035U discloses a kind of flexible compound oil pipe water injection string, and water injection well equipment passes through spiral shell
Line connects this tubing string lifting sub, and lifting sub lower end is connected through a screw thread crossover sub, and upper crossover sub lower end passes through anti-
Changed by the way that anti-decylization and the connection of outer locking device are lower decylization and outer locking device connection flexible compound oil pipe, flexible compound oil pipe lower end
Joint, lower crossover sub lower end threaded connection aggravates oil pipe, aggravates oil pipe lower end connection beveled tip.The flexible compound oil pipe of the tubing string
With stronger antiseptic property, the problem of reinjection well metal oil conduit corrodes can be preferably solved, extends tubing string service life, but
It is to be not directed to oil well production string.
The content of the invention
The purpose of the present invention is to overcome metal tube in existing extracting device of oil perishable, and needs single connection, construction operation amount
Greatly, the problem of labor intensity is big.
Therefore, the invention provides a kind of nonmetal flexible composite coiled tubing extracting device of oil, including well mouth hanger, and
Crossover sub, oil well pump, screen casing and the plug being from top to bottom sequentially connected, the oil well pump pass through sucker rod and well mouth hanger
Connection, connects non-metal composite pipe between the well mouth hanger and crossover sub, the sucker rod passes through non-metal composite pipe
It is internal.
Above-mentioned well mouth hanger upper design has the sealing block being engaged with well head electric pump.
Linked together between above-mentioned well mouth hanger and non-metal composite pipe by vulcanizing processing mode, its bonding strength
The weight into well is hung for non-metal composite pipe and well tool equipment.
Above-mentioned non-metal composite pipe is by protective layer, enhancement layer, tensile layer, steel wire rope composition；The protective layer, enhancement layer and
Tensile layer is set gradually from outside to inside, and steel wire rope is distributed in enhancement layer outer periphery.
Above-mentioned protective layer material is rubber.
Above-mentioned enhancement layer material is glass fiber.
Above-mentioned enhancement layer is the screen net structure that multiply weaves.
Above-mentioned tensile layer is superhigh molecular weight polyethylene material.
The molecular weight of above-mentioned ultra-high molecular weight polyethylene is 3,000,000~4,000,000.
Above-mentioned steel wire rope is 6~8 strands, is evenly distributed on enhancement layer outer periphery.
Beneficial effects of the present invention：
(1) non-metal composite pipe has that plastic material pliability is good, corrosion resistance is strong, the low spy of thermal conductivity factor in the present invention
Property, the deficiency of metal coiled tubing can be made up, most of performance of coiled tubing is reached, expands the use model of coiled tubing
Enclose.
(2) non-metal composite pipe can connect processing and can guarantee that tension, internal pressure strength requirement in the present invention, and operation can
With continuous tripping in and rise, work operations amount and personnel labor intensity can be greatly lowered.
(3) non-metal composite pipe can be connected with metal joint by vulcanizing processing in the present invention, be downhole production tubing string knot
The change of structure provides preferable means, is adapted to the improvement of process.
(4) DP technology of nonmetal flexible composite coiled tubing extracting device of oil of the present invention is compared with routine work mode, is had
Operating cost is low, operating efficiency is high, No leakage, use the distinguishing feature such as casing programme scope is wide.
(5) nonmetal flexible composite coiled tubing extracting device of oil of the present invention can be applied to oil-water well（Diameter, directional well, level
Well）Sand surfing, acidifying, solution gambling etc. measure construction, with good economic benefit and social benefit.
The present invention is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of nonmetal flexible composite coiled tubing extracting device of oil of the present invention.
Fig. 2 is the structural representation of non-metal composite pipe in the present invention.
Description of reference numerals：1st, well mouth hanger；2nd, non-metal composite pipe；3rd, sucker rod；4th, crossover sub；5th, pump
Pump；6th, screen casing；7th, plug；21st, protective layer；22nd, enhancement layer；23rd, tensile layer；24th, steel wire rope.
Embodiment
Embodiment 1：
In order to overcome metal tube in existing extracting device of oil perishable, and single connection is needed, construction operation amount is big, labor intensity
Big the problem of, a kind of nonmetal flexible composite coiled tubing extracting device of oil as shown in Figure 1 is present embodiments provided, including well head hangs
Hanging device 1, and crossover sub 4, oil well pump 5, screen casing 6 and the plug 7 being from top to bottom sequentially connected, the oil well pump 5 is by taking out
Beam hanger 3 is connected with well mouth hanger 1, and non-metal composite pipe 2, the oil pumping are connected between the mouth hanger 1 and crossover sub 4
Bar 3 is passed through inside non-metal composite pipe 2.
Well mouth hanger 1 and non-metal composite pipe 2 are connected by vulcanization processing, by well mouth hanger 1 with it is nonmetallic
Multiple tube 2 carries out vulcanization processing bonding on vulcanization lathe, and vulcanization processing belongs to known technology and is not described in detail herein；Turn
First 4 upper end of changing-over and non-metal composite pipe 2 be connecteds by vulcanization processing, for non-metal composite pipe 2 and reducing short circuit or
The connection and sealing of other instruments；The lower end of crossover sub 4 is connected by pipe screw thread with oil well pump 5, the lower end of oil well pump 5 connection sieve
Pipe 6 constitutes sucker rod pumping system with plug 7.Oil well pump 5 is driven to move by sucker rod 3 so that the liquid of underground passes through non-
Metal composite pipe 2 is delivered to ground.
Wherein, used well mouth hanger 1 is metal material, between the well mouth hanger 1 and non-metal composite pipe 2
Linked together by vulcanizing processing mode, its bonding strength is that non-metal composite pipe 2 and well tool equipment hang weight into well
Amount, simultaneous with more than 2 times safety coefficients；The upper design of well mouth hanger 1 has the sealing being engaged with well head electric pump
Block, plays a part of closing oil jacket annular space.
Nonmetal flexible composite coiled tubing extracting device of oil of the present invention replaces original metal oil conduit using non-metal composite pipe
As liquid input channel, operation continuously tripping in and can act non-metal composite pipe, and construction operation amount is greatly lowered, reduces
Workmen's labor intensity, improves the antiseptic power of tubing string, extends the normal production time, simplifies flow string structure；In addition, non-
The change that vulcanization processing between metal composite pipe and well mouth hanger, crossover sub is connected as downhole production tubular column structure is provided
Preferable means, are adapted to the improvement of process.
Embodiment 2：
On the basis of embodiment 1, the non-metal composite pipe 2 is by protective layer 21, enhancement layer 22, tensile layer 23, steel wire
Rope 24 is constituted；The protective layer 21, enhancement layer 22 and tensile layer 23 are set gradually from outside to inside, and steel wire rope 24 is distributed in enhancement layer
22 outer peripheries.
Wherein, the material of protective layer 21 is rubber, extruded to be coated on the outside of enhancement layer 22, is non-metal composite pipe 2
Pipe inside all the components are protected by one layer of shield of outermost comprehensively, with good wearability and corrosion resistance.
The material of enhancement layer 22 is glass fiber, and enhancement layer 22 is the screen net structure that multiply weaves, with very high stretching
Intensity and tear resistance, can increase substantially the internal pressure strength of tube wall, and compressive resistance can be entered as desired by number of braided strand
Row adjustment is general up to 20Mpa.
And tensile layer 23 is medium transfer layer, tensile layer 23 uses superhigh molecular weight polyethylene material, the supra polymer
The molecular weight of weight northylen is 3,000,000~4,000,000, through continuous extrusion one-shot forming.Polyethylene is most common plastic resin, but
High temperature can not be born, mechanical strength is not enough, and oil recovery non-metal composite pipe 2 needs good heat resistance, anti-wear performance
With resistance to stress energy, therefore, common polythene obviously can not be met, and ultra-high molecular weight polyethylene substantially increases the poly- second of crosslinking
Thermal deformation behavior, anti-wear performance and the chemical-resistance of alkene, heatproof is up to 90 DEG C, and when internal diameter is 50mm, tensile strength is reachable
15t, elongation at break are 7.6%, and surface is smooth, and coefficient of friction is small, are resistant to the corrosion of hundreds of chemicals, common acid, alkali,
Salt, organic solvent all do not corrode to superelevation material.Under natural lighting, its aging life-span is more than 50 years；It is not swollen in water
Swollen, water absorption rate is only the 1% of nylon, meets use requirement.
The steel wire rope 24 is 6~8 strands, is evenly distributed on the outer periphery of enhancement layer 22；Because the non-metal composite pipe 2 exists
Vertical tube is run during use, and has hung the oil recovery unit such as pump, bleeder, and this requires there is certain tension in use
Intensity, come carry itself, the weight of pumped (conveying) medium and Set under a well；Although the material that tensile layer 23, enhancement layer 22 are used is in itself
With tensile property, but also it is not enough to undertake load, and larger deflection can be produced, so designs 6 around tube wall
Strand steel wire rope 24 independently undertakes load.
The non-metal composite pipe 2 has preferable antiseptic power to down-hole liquid, and transporting resistance is small, with same specification
Steel pipe compared to light by 3/5, and lubricity, scaling property, wearability, chemical proofing are much better than steel material；Moreover, this
Non-metal composite pipe 2 has preferable flexible, can coil and construction operation is carried out on roller, at the same its can long dimensioned,
It can be needed to process a continuous tubing string according to well depth, the need for maximum gauge can reach 50mm, disclosure satisfy that 3000m wells
Deep to require, internal pressure strength reaches 30MPa, and tensile strength reaches 300KN, and 90 DEG C of heatproof can preferably ensure underground construction
Safety.
Non-metal composite pipe of the present invention has that plastic material pliability is good, corrosion resistance is strong, the low characteristic of thermal conductivity factor, can
To make up the deficiency of metal coiled tubing, most of performance of coiled tubing is reached, expands the use scope of coiled tubing；Separately
Outside, non-metal composite pipe, which can be connected, processes and can guarantee that tension, internal pressure strength requirement.
In summary, the DP technology of nonmetal flexible composite coiled tubing extracting device of oil of the present invention and routine work mode ratio
Compared with, have that operating cost is low, operating efficiency is high, No leakage, using the distinguishing feature such as casing programme scope is wide, and the invention can be answered
For oil-water well（Diameter, directional well, horizontal well）The measure construction such as sand surfing, acidifying, solution gambling, with good economic benefit and
Social benefit.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (1)
1. a kind of nonmetal flexible composite coiled tubing extracting device of oil, including well mouth hanger (1), and be from top to bottom sequentially connected
Crossover sub (4), oil well pump (5), screen casing (6) and plug (7), the oil well pump (5) passes through sucker rod (3) and well head and hangs
Device (1) is connected, it is characterised in that：Non-metal composite pipe (2), institute are connected between the well mouth hanger (1) and crossover sub (4)
State sucker rod (3) internal through non-metal composite pipe (2)；The non-metal composite pipe (2) is by protective layer (21), enhancement layer
(22), tensile layer (23), steel wire rope (24) composition；The protective layer (21), enhancement layer (22) and tensile layer (23) are from outside to inside
Set gradually, steel wire rope (24) is distributed in enhancement layer (22) outer periphery；Protective layer (21) material is rubber；It is described to strengthen
Layer (22) material is glass fiber；The enhancement layer (22) is the screen net structure that multiply weaves；The tensile layer (23) is superelevation point
Sub- weight northylen material, the molecular weight of ultra-high molecular weight polyethylene is 3,000,000~4,000,000, through continuous extrusion one-shot forming；It is described
Steel wire rope (24) is 6~8 strands, is evenly distributed on enhancement layer (22) outer periphery；Well mouth hanger (1) upper design have with
The sealing block that well head electric pump is engaged；By vulcanizing processing mode between the well mouth hanger (1) and non-metal composite pipe (2)
Link together, its bonding strength is that non-metal composite pipe (2) and well tool equipment hang weight into well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410726144.5A CN104481464B (en) | 2014-12-04 | 2014-12-04 | A kind of nonmetal flexible composite coiled tubing extracting device of oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410726144.5A CN104481464B (en) | 2014-12-04 | 2014-12-04 | A kind of nonmetal flexible composite coiled tubing extracting device of oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104481464A CN104481464A (en) | 2015-04-01 |
| CN104481464B true CN104481464B (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410726144.5A Active CN104481464B (en) | 2014-12-04 | 2014-12-04 | A kind of nonmetal flexible composite coiled tubing extracting device of oil |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114683563A (en) * | 2020-12-25 | 2022-07-01 | 中国石油化工股份有限公司 | Machining and mounting method of oil production pipe joint and oil production pipe joint |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1903178A2 (en) * | 1999-12-20 | 2008-03-26 | Halliburton Energy Services, Inc. | Three dimensional steerable system |
| CN102448720A (en) * | 2009-04-16 | 2012-05-09 | 雪佛龙美国公司 | Structural components for oil, gas, exploration, refining and petrochemical applications |
| CN102889437A (en) * | 2012-10-08 | 2013-01-23 | 孟庆义 | Flexible compound oil pipe |
| CN203516030U (en) * | 2013-09-27 | 2014-04-02 | 中国石油天然气股份有限公司 | Non-metallic pipe oil-submersible screw pump oil production plant |
| CN104141838A (en) * | 2013-05-10 | 2014-11-12 | 江苏申视新材料科技有限公司 | Flexible composite high-pressure delivery pipe |
| CN204371252U (en) * | 2014-12-04 | 2015-06-03 | 中国石油天然气股份有限公司 | A kind of nonmetal flexible compound continuous-tube extracting device of oil |
-
2014
- 2014-12-04 CN CN201410726144.5A patent/CN104481464B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1903178A2 (en) * | 1999-12-20 | 2008-03-26 | Halliburton Energy Services, Inc. | Three dimensional steerable system |
| CN102448720A (en) * | 2009-04-16 | 2012-05-09 | 雪佛龙美国公司 | Structural components for oil, gas, exploration, refining and petrochemical applications |
| CN102889437A (en) * | 2012-10-08 | 2013-01-23 | 孟庆义 | Flexible compound oil pipe |
| CN104141838A (en) * | 2013-05-10 | 2014-11-12 | 江苏申视新材料科技有限公司 | Flexible composite high-pressure delivery pipe |
| CN203516030U (en) * | 2013-09-27 | 2014-04-02 | 中国石油天然气股份有限公司 | Non-metallic pipe oil-submersible screw pump oil production plant |
| CN204371252U (en) * | 2014-12-04 | 2015-06-03 | 中国石油天然气股份有限公司 | A kind of nonmetal flexible compound continuous-tube extracting device of oil |
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| CN104481464A (en) | 2015-04-01 |
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