CN102434110B - High-speed turbine section for turbine drilling tool - Google Patents
High-speed turbine section for turbine drilling tool Download PDFInfo
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- CN102434110B CN102434110B CN201110444438.5A CN201110444438A CN102434110B CN 102434110 B CN102434110 B CN 102434110B CN 201110444438 A CN201110444438 A CN 201110444438A CN 102434110 B CN102434110 B CN 102434110B
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Abstract
The invention relates to a high-speed turbine section for a turbine drilling tool in the field of oil exploration, which is particularly suitable for a deep well and a directional well. The high-speed turbine section comprises a shell, wherein a turbine shell is mounted inside the shell in a penetrating manner; a spline shaft and a spline sleeve are respectively connected with the turbine shaft up and down; a turbine subassembly and a centering bearing are axially arranged in an annular runner between the turbine shaft and a shell inner cavity; and a bearing group is arranged below the turbine shaft. The high-speed turbine section is characterized in that a hydraulic balancing subassembly is mounted at the upper part of the bearing group below the turbine shaft; a center through hole which is through up and down is arranged on the turbine shaft; an upper radial through hole communicating with the center through hole is arranged above the turbine shaft so that the center through hole is communicated with the part above the shell inner cavity; and a lower radial through hole communicated with the center through hole is arranged corresponding to the hydraulic balancing subassembly, below the turbine shaft. In the invention, the runner of the turbine section is improved, the pressure consumption of the turbine drilling tool is reduced, and the whole machine efficiency of the turbine drilling tool is improved; meanwhile, the thrust load carrying conditions of the turbine shaft and the ball bearing group are improved, and the service life of the turbine drilling tool is prolonged.
Description
Technical field
The present invention relates to a kind of petroleum exploration field, be particularly suitable for deep-well, the high-speed turbine section for turbine drilling tool of directional well, belong to petroleum machinery equipment technical field.
Background technology
Turbodrill in field application such as oil exploration & developments is to utilize the kinetic energy of drilling fluid to convert mechanical energy to, the broken rock of drive bit.Because early stage drilling equipment level is not high, the pressure drop General Requirements of turbodrill is less.Along with the development of PDC bit technique, high-speed turbine coupling drill bit becomes possibility.In order to improve the output performance of turbine, be necessary to improve the discharge capacity of turbine, thereby improve the mechanical energy of drilling fluid.And the pump pressure providing along with borehole pump is more and more higher, and the application of high speed turbodrill, the large discharge capacity of turbine has caused high pressure drop, and turbine pressure drop height not only causes the load of borehole pump excessive, also can affect the mechanical efficiency of turbodrill.The key that improves turbodrill overall efficiency is to reduce the pressure loss of drilling fluid in turbodrill, reduces turbine pressure drop.Turbine pressure drop mainly comprises the pressure loss that drilling fluid causes through turbine stator and rotor and passes through the pressure loss of other parts of runner.The pressure loss of turbine stator and rotor is relevant with the hydraulic performance of blade, and the pressure loss of other parts is relevant with flow passage structure.The flow passage structure of existing turbine section, because area of passage changes acutely, build-up of pressure loss is larger, has reduced the efficiency of turbodrill.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiency that above-mentioned prior art exists and a kind of high-speed turbine section for turbine drilling tool of different flow passage structures is provided, and drilling fluid area of passage is changed mild, reduces and presses consumption, improves the overall efficiency of turbodrill.
The present invention is that the technical scheme that the problem of the above-mentioned proposition of solution adopts is:
Include housing, in housing, be coated with turbine wheel shaft, turbine wheel shaft connects respectively splined shaft and spline housing up and down, in annular channel between turbine wheel shaft and housing inner chamber, be installed on vertically turbine assembly and alignment bearing, below turbine wheel shaft, install bearing group, it is characterized in that the top of bearing group is installed on hydraulic resistance balance assembly below turbine wheel shaft, turbine wheel shaft is offered the central through hole of up/down perforation, above turbine wheel shaft, offer the upper radial direction through hole being communicated with central through hole, central through hole is connected with housing inner chamber top, below turbine wheel shaft, corresponding to hydraulic resistance balance assembly, offer the lower radial direction through hole being conducted with central through hole.
Press such scheme, described described turbine assembly arranges 70～130 grades vertically, and every grade of turbine assembly is comprised of a pair of turbine stator and turbine rotor.
Press such scheme, described hydraulic resistance balance assembly comprises the stationary seat that housing inner chamber arranges, stationary seat is installed stationary ring dish by spring, the upper surface of stationary ring dish be sleeved on the rotating ring dish phase configuration on turbine wheel shaft, the endoporus of stationary ring dish be sleeved on the rotating ring spacer phase configuration on turbine wheel shaft, described rotating ring dish lower surface arranges annular groove, and annular groove is connected with the central through hole of turbine wheel shaft by connecting through hole and lower radial direction through hole.
Press such scheme, described hydraulic resistance balance assembly is installed on 1～4 vertically.
Press such scheme, described upper radial direction through hole is opened in the bottom of going up 4 grades of turbine assemblies most.
Press such scheme, above the inner chamber of spline housing, with the junction of turbine wheel shaft, Valve with sliding bush is set, Valve with sliding bush offers that radially valve opening is corresponding with the pressure release through hole of offering on spline housing, when slide valve buckle is conducted the central through hole of turbine wheel shaft and the below of annular channel by slide valve buckle during in open position.
Beneficial effect of the present invention is: 1, under the operating mode of high rotating speed, heavy load, by the change of hydraulic resistance balance assembly and turbine section runner is set below turbine wheel shaft, make the sub-fraction drill-in fluid that accounts for total flow 5% left and right through hydraulic resistance balance assembly, arrive turbine section below by turbine wheel shaft central through hole, improved thus turbine section runner, drilling fluid area of passage is changed mild, reduce the pressure consumption of turbodrill, improve the overall efficiency of turbodrill; 2, due to the reduction of front and back pressure reduction, make corresponding the reducing of end thrust of turbine wheel shaft, act on also corresponding diminishing of end thrust in ball bearing group, thereby improve the thrust force-bearing situation of turbine wheel shaft and ball bearing group, the application life of having improved turbodrill.When 3, turbine section quits work, the Valve with sliding bush in valve formula spline housing is in open position, and drilling fluid flows out from pressure release through hole, can work to wash away, clean turbine wheel shaft inner chamber.
Accompanying drawing explanation
Fig. 1 is the positive sectional structure chart of the first half of one embodiment of the invention.
Fig. 2 is the positive sectional structure chart of the latter half of one embodiment of the invention.
Fig. 3 is the positive sectional structure chart of hydraulic resistance balance assembly in one embodiment of the invention.
Fig. 4 is the A-A sectional drawing in Fig. 3.
Fig. 5 is the axial view of stationary seat in hydraulic resistance balance assembly in one embodiment of the invention.
The axial view of an embodiment bottom bracket end face in Fig. 6 the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Include the housing 13 of tubulose, the two ends of housing arrange respectively the top connection 1 with inside tapered thread and the lower contact 24 with outer cone thread, in housing, be coated with turbine wheel shaft 12, the upper and lower side of turbine wheel shaft be threaded respectively splined shaft 2 and spline housing 21, in annular channel between turbine wheel shaft and housing inner chamber, be installed on vertically turbine assembly and alignment bearing 9, described turbine assembly is installed on 90 grades vertically, the turbine assembly of going up most arranges 4 grades, going up most 4 grades of turbine assemblies works to filter mud impurity and prevents that radial direction through hole from stopping up, alignment bearing is installed vertically 2-4 and is paid, on turbine wheel shaft, equispaced distributes, every grade of turbine assembly is comprised of a pair of turbine stator 8 and turbine rotor 7, turbine stator is fixed on housing inner chamber by upper adjusting sleeve 4, shunting spacer 6 and gap adjusting sleeve 11, and turbine rotor and alignment bearing are adjusted spacer ring 10 by upper adjustment circle 3, shunting axle sleeve 5 and gap and be fixed on turbine wheel shaft.Below turbine wheel shaft, by bearing support 18, install ball bearing group 17, being axially fixed on turbine wheel shaft by rotating ring spacer 29 and lower adjusting sleeve 19 of ball bearing group, bearing support up and down by stationary seat 25, lower flow guide sleeve 15 and lower adjusting sleeve 20 location; Ball bearing group also can change diamond sliding thrust bearing group into, can reduce turbine section length like this, improves the application life of turbine section.On the top of ball bearing group, be installed on hydraulic resistance balance assembly 14, described hydraulic resistance balance assembly comprises the stationary seat 25 that housing inner chamber is installed, stationary seat endoporus is installed stationary ring dish 27 by disk spring 28, the circumferential locating slot that stationary ring dish periphery is offered, with dog screw 30 phase configuration of radially installing, stationary ring dish is circumferentially located, the upper surface of stationary ring dish be sleeved on the rotating ring dish 26 lower surface phase configuration on turbine wheel shaft, the endoporus of stationary ring dish be sleeved on rotating ring spacer 29 phase configuration on turbine wheel shaft, rotating ring dish compresses by rotating ring spacer, described rotating ring dish lower surface arranges annular groove, annular groove is connected with the central through hole of turbine wheel shaft by connecting through hole and lower radial direction through hole, described turbine wheel shaft is offered the central through hole of up/down perforation, above turbine wheel shaft, offer the upper radial direction through hole 16 being communicated with central through hole, described upper radial direction through hole is opened in the bottom of going up 4 grades of turbine assemblies most, upper radial direction through hole is 2～4, along circumferentially uniform, the corresponding upper radial direction through hole of shunting axle sleeve 5 being sleeved on turbine wheel shaft is offered a ring through hole, central through hole is connected with housing inner chamber top, below turbine wheel shaft, corresponding to hydraulic resistance balance assembly, offer the lower radial direction through hole 36 being conducted with central through hole, described hydraulic resistance balance assembly is installed on 3 vertically, the lower radial direction through hole of the corresponding circle of each hydraulic resistance balance assembly, on the brace rod of stationary seat 25 peripheral annular groove 32 both ends of the surface, offer circular hole, in circular hole, insert pin 31, make cannelure and brace rod 33 centerings of three stationary seats being connected up and down, to keep the unimpeded of annular channel.Stationary seat bottom end bearing holder structure and stationary seat are close, the both ends of the surface of peripheral annular groove 35 are provided with back-up block 34, on on the back-up block of upper surface, offer circular hole and insert pin 31, with being connected and centering of the lower surface of stationary seat, retainer shaft bearing annular channel unimpeded.Above the inner chamber of spline housing 21, with the junction of turbine wheel shaft, Valve with sliding bush is set, described Valve with sliding bush comprises the valve opening that spline housing inner chamber is offered, in valve opening, configure sliding sleeve spool 22, sliding sleeve spool bottom configuration return spring 23, by the thread connection of spline housing and turbine wheel shaft, by sliding sleeve spool and return spring pretension, sliding sleeve spool offers that radially valve opening 37 is corresponding with the pressure release through hole 38 of offering on spline housing, when slide valve buckle is conducted the central through hole of turbine wheel shaft and the below of annular channel by Valve with sliding bush during in open position.When turbine section quits work, Valve with sliding bush is in open position, and drilling fluid flows out from pressure release through hole, works to wash away, cleans turbine wheel shaft inner chamber; During turbine section work, return spring pressurized, the pressure release through hole on spline housing is closed.
During turbine section work of the present invention, drilling fluid is through going up most after 4 grades of turbine assemblies, and by the hole on shunting axle sleeve 5 and turbine wheel shaft, a part enters turbine wheel shaft central through hole, and the situation of closing at slide valve buckle forms higher-pressure region; And another part by lower group of multistage turbine assembly after pressure drop reduce to form low-pressure area.Drilling fluid is by hydraulic resistance balance assembly, by higher-pressure region, to low-pressure area earial drainage, improved on the one hand the pressure of low-pressure area, pressure drop before and after having reduced, produce on the other hand the thrust reverse with turbine wheel shaft axial hydraulic thrust, can reduce the axial load that the thrust of ball bearing group is born.During turbine section work, in the turbine wheel shaft of flowing through, the drilling fluid of central through hole only accounts for 5% left and right of total flow, and drilling fluid mainly flows the annular channel between turbine wheel shaft and housing.The area of passage of turbine is A
1, in hydraulic resistance balance assembly, the cannelure area of stationary seat is A
2, the cannelure area of bearing support is A
3.Make A
1=A
2=A
3, or area of passage is close, and the variation of the area of passage of drilling fluid is comparatively mild, and the pressure loss reduces, and can correspondingly reduce turbine pressure drop.
Claims (9)
1. a high-speed turbine section for turbine drilling tool, include housing, in housing, be coated with turbine wheel shaft, turbine wheel shaft connects respectively splined shaft and spline housing up and down, in annular channel between turbine wheel shaft and housing inner chamber, be installed on vertically turbine assembly and alignment bearing, below turbine wheel shaft, install bearing group, it is characterized in that the top of bearing group is installed on hydraulic resistance balance assembly below turbine wheel shaft, turbine wheel shaft is offered the central through hole of up/down perforation, above turbine wheel shaft, offer the upper radial direction through hole being communicated with central through hole, central through hole is connected with housing inner chamber top, below turbine wheel shaft, corresponding to hydraulic resistance balance assembly, offer the lower radial direction through hole being conducted with central through hole.
2. high-speed turbine section for turbine drilling tool according to claim 1, is characterized in that described turbine assembly arranges 70 ~ 130 grades vertically, and every grade of turbine assembly is comprised of a pair of turbine stator and turbine rotor.
3. high-speed turbine section for turbine drilling tool according to claim 1 and 2, it is characterized in that described hydraulic resistance balance assembly comprises the stationary seat that housing inner chamber arranges, stationary seat is installed stationary ring dish by spring, the upper surface of stationary ring dish be sleeved on the rotating ring dish phase configuration on turbine wheel shaft, the endoporus of stationary ring dish be sleeved on the rotating ring spacer phase configuration on turbine wheel shaft, described rotating ring dish lower surface arranges annular groove, and annular groove is connected with the central through hole of turbine wheel shaft by connecting through hole and lower radial direction through hole.
4. high-speed turbine section for turbine drilling tool according to claim 3, is characterized in that described hydraulic resistance balance assembly installs 1 ~ 4 vertically.
5. high-speed turbine section for turbine drilling tool according to claim 1 and 2, is characterized in that described upper radial direction through hole is opened in the bottom of going up 4 grades of turbine assemblies most.
6. high-speed turbine section for turbine drilling tool according to claim 4, is characterized in that the lower radial direction through hole of the corresponding circle of each hydraulic resistance balance assembly; On the overlap joint muscle of stationary seat peripheral annular groove both ends of the surface, offer circular hole, in circular hole, insert pin, make cannelure and the overlap joint muscle centering of the stationary seat that is connected up and down.
7. high-speed turbine section for turbine drilling tool according to claim 1 and 2, it is characterized in that with the junction of turbine wheel shaft, Valve with sliding bush being set above the inner chamber of spline housing, Valve with sliding bush offers that radially valve opening is corresponding with the pressure release through hole of offering on spline housing, when Valve with sliding bush is conducted the central through hole of turbine wheel shaft and the below of annular channel by Valve with sliding bush during in open position.
8. high-speed turbine section for turbine drilling tool according to claim 7, it is characterized in that described Valve with sliding bush comprises the valve opening that spline housing inner chamber is offered, in valve opening, configure sliding sleeve spool, sliding sleeve spool bottom configuration return spring, by the thread connection of spline housing and turbine wheel shaft, by sliding sleeve spool and return spring pretension, sliding sleeve spool offers that radially valve opening is corresponding with the pressure release through hole of offering on spline housing.
9. high-speed turbine section for turbine drilling tool according to claim 1 and 2, is characterized in that described bearing group is ball bearing group or diamond sliding thrust bearing group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110444438.5A CN102434110B (en) | 2011-12-26 | 2011-12-26 | High-speed turbine section for turbine drilling tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110444438.5A CN102434110B (en) | 2011-12-26 | 2011-12-26 | High-speed turbine section for turbine drilling tool |
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| Publication Number | Publication Date |
|---|---|
| CN102434110A CN102434110A (en) | 2012-05-02 |
| CN102434110B true CN102434110B (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110444438.5A Active CN102434110B (en) | 2011-12-26 | 2011-12-26 | High-speed turbine section for turbine drilling tool |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527077B (en) * | 2012-07-04 | 2015-08-19 | 长江大学 | Downhole turbine motor plasma drilling tool |
| CN102747975B (en) * | 2012-07-20 | 2014-12-10 | 长江大学 | Deepwater turbine abandoned well cutting device |
| CN109723375B (en) * | 2019-02-27 | 2023-08-22 | 长江大学 | Hydraulic suspension turbine section |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048106U (en) * | 1988-12-18 | 1989-11-22 | 新疆石油局钻井工艺研究所 | Supporter for turbine drilling tool |
| US6742609B2 (en) * | 2001-05-11 | 2004-06-01 | United Diamond Ltd. | Rotational impact drill assembly |
| CN1262734C (en) * | 2002-08-22 | 2006-07-05 | 石油大学(北京) | Building block system combined turbine section |
| US7918290B2 (en) * | 2008-11-20 | 2011-04-05 | Schlumberger Technology Corporation | Systems and methods for protecting drill blades in high speed turbine drills |
| CN202380983U (en) * | 2011-12-26 | 2012-08-15 | 江汉石油钻头股份有限公司 | Turbine section for high-speed turbodrill |
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| CN102434110A (en) | 2012-05-02 |
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Address after: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: Jianghan Petroleum Drilling Bit Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180309 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Kingdream Sinopec Petroleum Machinery Co. Ltd. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: SINOPEC OILFIELD EQUIPMENT CORPORATION |
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| TR01 | Transfer of patent right |