CN104653123A - Coupling-free direct connecting spinning joint oil pipe - Google Patents
Coupling-free direct connecting spinning joint oil pipe Download PDFInfo
- Publication number
- CN104653123A CN104653123A CN201510061597.5A CN201510061597A CN104653123A CN 104653123 A CN104653123 A CN 104653123A CN 201510061597 A CN201510061597 A CN 201510061597A CN 104653123 A CN104653123 A CN 104653123A
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- screw thread
- pipe
- coupling
- internal thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009987 spinning Methods 0.000 title abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 abstract 3
- 238000005859 coupling reaction Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002478 hand joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a coupling-free direct connecting spinning joint oil pipe, which consists of an internal screw thread connecting end, a transition section, a pipe body section and an external screw thread connecting end, wherein the wall thickness of the internal screw thread connecting end and the wall thickness of the transition section respectively correspond to the wall thickness of a pipe body of the pipe body section. Compared with an ordinary coupling connected oil pipe, the coupling-free direct connecting spinning joint oil pipe has the advantages that under the condition that the inner diameter of a casing pipe is not changed, the inner diameter dimension maximization of the oil pipe can be realized, and the connection intensity and the sealing performance at the screw thread connecting part of the oil pipe can be ensured; reinforcing ribs are uniformly arranged on the transition section along the circumferential direction, so that the connection intensity between the transition section and the internal screw thread connecting end is improved, the inner hole dimension of the oil pipe at the screw thread connecting part is consistent, the gap formed between pipe bodies arranged in the middle and at two ends during coupling connection is eliminated, the eddy generated by the fluid in the middle of the coupling is avoided, and the flowing pressure loss of an oil body in the oil pipe is reduced.
Description
Technical field:
The present invention relates to a kind of oil recovery steel oil pipe, particularly relate to a kind of direct-connected type steel oil pipe that spins without the need to box cupling.
Background technology:
Along with the increasing of oil development difficulty, opening the increase of producing cost, making current each elephant for carrying out old well transformation, improve production capacity and produce urgent demand.Old well is because opening product for many years, the effect of long-term Tensile, compression, interior pressure, external pressure, the load such as bending kept a grip on by sleeve pipe, and earth formation variation produce shearing, squeeze ruin, bending iso-stress effect, make sleeve pipe cause the inner annulus of sleeve pipe to diminish because of reasons such as bending, distortion, the API oil pipe of conventional belt box cupling possibly cannot be passed through.
As the oil pipe that pressure operation uses, for completing pressure operation as early as possible, saving activity duration and operating cost, require the flow added under pressure in bassoon.This just needs to select pipe aperture size large as far as possible; And diminish because of the inner annulus of old casing, this just requires that oil connection place external diameter is little as far as possible.At present, all connected by box cupling in the oil pipe of 2-3/8 " ~ 4-1/2 " all series, not without the direct-connected type oil pipe that spins of box cupling.For adapting to this demand, applicant has developed a kind of without the direct-connected type oil pipe that spins of box cupling.
summary of the invention:
The object of this invention is to provide one and connect oil pipe without the direct-connected type that revolves of box cupling, it under casing inner diameter the same terms, can increase the oil transportation hole internal diameter of oil pipe further.
The technical scheme that the present invention takes is as follows:
A kind of without the direct-connected type oil pipe that spins of box cupling, it is characterized in that: by internal thread link, changeover portion, body section and external screw thread link composition, internal thread link is arranged on one end of body section through changeover portion, external screw thread link is arranged on the other end of body section, internal thread hole and internal torque shoulder is provided with in the endoporus of internal thread link, the cylindrical of threaded ends is provided with male connection outside, outer torque shoulder is provided with at the exposed junction of male connection, male connection and internal thread hole seal pairing and spin, outer torque shoulder seals with internal torque shoulder and coordinates, internal thread link is all corresponding with the body wall thickness of body section with the wall thickness of changeover portion.
Further, changeover portion is circumferentially provided with reinforcing rib equably.
Further, the quantity of reinforcing rib is more than 3.
Further, the quantity of reinforcing rib is 3 ~ 8.
Further, the shape of the axial cross section of reinforcing rib is the isosceles trapezoid of corner band circular arc.
Further, internal torque shoulder and outer torque shoulder all with oil pipe endoporus axes normal.
This structure without box cupling direct-connected spin type oil pipe and routine the oil pipe connected with box cupling compared with, under the condition that casing inner diameter is constant, the internal diameter size of oil pipe can realize maximizing, simultaneously, because all pipe thicknesses of whole oil pipe are all identical, therefore the intensity that is tightly connected between internal thread link and external screw thread link can improve 15% ~ 20%, and sealing performance is more secure; Owing to being circumferentially provided with reinforcing rib equably on changeover portion, so just further increase the bonding strength between changeover portion and internal thread link, the power of spinning that internal thread link is subject to passes to changeover portion, and is discharged, and does not affect the bulk strength of oil pipe.
This structure without the direct-connected type oil pipe that spins of box cupling in syndeton: external screw thread is processed in one end not thickened pipe end, and other end thickened pipe end is processed into female internal thread, two tubes connect time, screw connection by the cooperation of internal and external threads.
In torque shoulder: be processed into torque shoulder face, right angle at internal thread root.This torque shoulder, till on the one hand joint being anchored to torque shoulder, can ensure that position on the buckle is accurate; Torque shoulder Absorbable rod part torque wrench moment on the other hand, the moment of torsion that threaded portion is born reduces, and not easily thread gluing occurs; Twist after connecing again on the one hand, external thread buckle end surfaces and internal thread button torque shoulder face, because of the effect of shouldering torgue, form contact, can play the effect of auxiliary seal.
In inner hole smooth transition: after outer, interior button is screwed, between body with body hole size consistent, seamlessly transit, eliminate the space formed with two ends body in the middle of API box cupling, avoid eddy current the washing away box cupling neutral that fluid produces in the middle of box cupling, fluid is flowed in body does not have the pressure loss.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representations of adjacent two oil pipes at connection of thread;
Fig. 3 is A-A cutaway view Amplified image in Fig. 1:
In figure, 1-internal thread link; 2-changeover portion; 3-body section; 4-external screw thread link; 11-internal thread hole; 12-internal torque shoulder; 21-reinforcing rib; 41-male connection; The outer torque shoulder of 42-.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described:
A kind of without the direct-connected type oil pipe that spins of box cupling, as shown in FIG. 1 to 3, it is by internal thread link 1, changeover portion 2, body section 3 and external screw thread link 4 form, internal thread link 1 is arranged on one end of body section 3 through changeover portion 2, external screw thread link 4 is arranged on the other end of body section 3, internal thread hole 11 and internal torque shoulder 12 is provided with in the endoporus of internal thread link 1, the cylindrical of threaded ends 4 is provided with male connection 41 outside, outer torque shoulder 42 is provided with at the exposed junction of male connection 41, internal torque shoulder 12 and outer torque shoulder 42 all with oil pipe endoporus axes normal, male connection 41 and internal thread hole 11 seal pairing and spin, outer torque shoulder 42 seals with internal torque shoulder 12 and coordinates, internal thread link 1 is all corresponding with the body wall thickness of body section 3 with the wall thickness of changeover portion 2, changeover portion 2 is circumferentially provided with three reinforcing ribs 21 equably, the shape of the axial cross section of described reinforcing rib 21 is circular arc.
Claims (6)
1. one kind without the direct-connected type oil pipe that spins of box cupling, it is characterized in that: by internal thread link (1), changeover portion (2), body section (3) and external screw thread link (4) composition, internal thread link (1) is arranged on one end of body section (3) through changeover portion (2), external screw thread link (4) is arranged on the other end of body section (3), internal thread hole (11) and internal torque shoulder (12) is provided with in the endoporus of internal thread link (1), the cylindrical of threaded ends (4) is provided with male connection (41) outside, outer torque shoulder (42) is provided with at the exposed junction of male connection (41), male connection (41) and internal thread hole (11) seal pairing and spin, outer torque shoulder (42) seals with internal torque shoulder (12) and coordinates, internal thread link (1) is all corresponding with the body wall thickness of body section (3) with the wall thickness of changeover portion (2).
2., according to claim 1 without the direct-connected type oil pipe that spins of box cupling, it is characterized in that: on changeover portion (2), be circumferentially provided with reinforcing rib (21) equably.
3., according to claim 2 without the direct-connected type oil pipe that spins of box cupling, it is characterized in that: the quantity of reinforcing rib (21) is more than 3.
4., according to claim 3 without the direct-connected type oil pipe that spins of box cupling, it is characterized in that: the quantity of reinforcing rib (21) is 3 ~ 8.
5., according to claim 2 without the direct-connected type oil pipe that spins of box cupling, it is characterized in that: the shape of the axial cross section of reinforcing rib (21) is the isosceles trapezoid of corner band circular arc.
6., according to claim 1 without the direct-connected type oil pipe that spins of box cupling, it is characterized in that: internal torque shoulder (12) and outer torque shoulder (42) all with oil pipe endoporus axes normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510061597.5A CN104653123A (en) | 2015-02-05 | 2015-02-05 | Coupling-free direct connecting spinning joint oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510061597.5A CN104653123A (en) | 2015-02-05 | 2015-02-05 | Coupling-free direct connecting spinning joint oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104653123A true CN104653123A (en) | 2015-05-27 |
Family
ID=53244697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510061597.5A Pending CN104653123A (en) | 2015-02-05 | 2015-02-05 | Coupling-free direct connecting spinning joint oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104653123A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437554A (en) * | 2016-11-28 | 2017-02-22 | 无锡金顶石油管材配件制造有限公司 | Bidirectional threaded petroleum pipeline connecting hoop |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200992957Y (en) * | 2006-12-19 | 2007-12-19 | 刘玉学 | Saw tooth thread connecting mechanism |
| CN201159053Y (en) * | 2007-07-13 | 2008-12-03 | 杨波 | End main body shaping integral joint tubing |
| CN101871325A (en) * | 2010-07-09 | 2010-10-27 | 天津钢管集团股份有限公司 | Operation tubing threaded connection structure |
| CN203308396U (en) * | 2012-07-26 | 2013-11-27 | 山东泰丰钢业有限公司 | High-strength oil casing joint with metal interference seal |
| CN204004937U (en) * | 2014-08-06 | 2014-12-10 | 安徽省宣城市佰年塑胶有限公司 | A kind of joint pipeline |
| CN204040936U (en) * | 2014-07-08 | 2014-12-24 | 天津天钢石油专用管制造有限公司 | The female adapter of petroleum pipeline direct linkage type |
| CN204532140U (en) * | 2015-02-05 | 2015-08-05 | 江苏常宝钢管股份有限公司 | A kind of without the direct-connected type oil pipe that spins of box cupling |
-
2015
- 2015-02-05 CN CN201510061597.5A patent/CN104653123A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200992957Y (en) * | 2006-12-19 | 2007-12-19 | 刘玉学 | Saw tooth thread connecting mechanism |
| CN201159053Y (en) * | 2007-07-13 | 2008-12-03 | 杨波 | End main body shaping integral joint tubing |
| CN101871325A (en) * | 2010-07-09 | 2010-10-27 | 天津钢管集团股份有限公司 | Operation tubing threaded connection structure |
| CN203308396U (en) * | 2012-07-26 | 2013-11-27 | 山东泰丰钢业有限公司 | High-strength oil casing joint with metal interference seal |
| CN204040936U (en) * | 2014-07-08 | 2014-12-24 | 天津天钢石油专用管制造有限公司 | The female adapter of petroleum pipeline direct linkage type |
| CN204004937U (en) * | 2014-08-06 | 2014-12-10 | 安徽省宣城市佰年塑胶有限公司 | A kind of joint pipeline |
| CN204532140U (en) * | 2015-02-05 | 2015-08-05 | 江苏常宝钢管股份有限公司 | A kind of without the direct-connected type oil pipe that spins of box cupling |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437554A (en) * | 2016-11-28 | 2017-02-22 | 无锡金顶石油管材配件制造有限公司 | Bidirectional threaded petroleum pipeline connecting hoop |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150527 |
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| RJ01 | Rejection of invention patent application after publication |