CN1314878C - Flexible compound directional screw drill - Google Patents
Flexible compound directional screw drill Download PDFInfo
- Publication number
- CN1314878C CN1314878C CNB2003101003526A CN200310100352A CN1314878C CN 1314878 C CN1314878 C CN 1314878C CN B2003101003526 A CNB2003101003526 A CN B2003101003526A CN 200310100352 A CN200310100352 A CN 200310100352A CN 1314878 C CN1314878 C CN 1314878C
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- CN
- China
- Prior art keywords
- mandrel
- screw rod
- shell
- spherical
- last
- 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.)
- Expired - Fee Related
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 13
- 210000001503 joint Anatomy 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 11
- 238000005452 bending Methods 0.000 abstract description 6
- 230000001186 cumulative effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The invention relates to a flexible compound directional screw drill which has the characteristic of flexible compound direction. One lead is one section, each section can be bent by the matching between the spherical body inside the section and the ball seat and the matching of the axial clearance between the movable joints outside the section, the bending can be carried out by 6-8 degrees, 4-6 leads can be combined in series, and the bending has cumulative directionality. The drilling tool is also provided with a deflecting thruster. Therefore, the invention can drill a horizontal well with a small curvature radius with huge torque and large bending. The drilling tool is a high-efficiency tool for drilling a small-curvature radial roadway type horizontal well.
Description
Technical field
The present invention relates to a kind of oil drilling mud motor, especially a kind of relating to, can be crooked, and can be connected in series and can directed novel mud motor.
Background technology
Current, used underground power drilling has helicoid hydraulic motor and worm gear drilling tool, this drilling tool of two types all has single and combined type, its joint length is at 4-9 rice, because the restriction of length, so can not in the small curve horizontal well, use, force and bore small curve horizontal well use rotating disk brill or simple jet drilling, the popularization and the development of small curve horizontal well have been limited greatly, and the small curve horizontal well is to viscous crude, low oil impregnate, the exploitation of oil residues has important practical value, especially at old well reform, increases considerably daily output, improve on the ultimate recovery of oil field, the small curve horizontal well be conventional straight well and in, long curvature horizontal well is irreplaceable.So solving and effectively boring the small curve horizontal well with power drilling tool is the problem that world oil circle is paid close attention to and studied, yet up to the present, yet there are no this series products and be born.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art, provide a kind of flexibility compound directed helicoid hydraulic motor, this drilling tool is by the mode of merogenesis serial connection, reach the body bending, short in single-unit length, can also produce the screw rod of high pulling torque, guarantee to satisfy and improve rate of penetration and adapt to the needs that bore the small curve horizontal well, each internode bending has unified direction.Remove in addition, also adding has the structure that can help increasing hole angle.
The objective of the invention is to realize by following proposal, the compound directed helicoid hydraulic motor of flexibility of the present invention is by last joint screw rod, middle joint screw rod reaches joint screw rod formation down, the wherein said joint screw rod of going up includes shell on, the end that should go up shell is top connection, be provided with packing element and last mandrel in the last shell, be formed with circulatory flow between last packing element and the last mandrel, the bottom of its mandrel connects drive sleeve on by spline, this drive sleeve is provided with water channel, in drive sleeve, be provided with transmission fuse on, should go up the transmission fuse is the triangle hollow cylinder, its lower end is configured in the spherical, this spherical outside is provided with ball seat, described ball seat matches with wheel ball bearing, its spherical has the spherical mandrel of downward extension, this sphere mandrel is in the middle shell of joint screw rod in extending to, between described spherical mandrel and the middle shell seal is arranged, match with transmission fuse in its spherical mandrel bottom, be equipped with the turning joint that is fitted to each other and is connected on one end of the periphery of shell on the last joint screw rod with on the both ends of the periphery of the middle shell of middle joint screw rod, can be connected in series several with joint screw rod in this, there is shell to allow crooked end play between the described turning joint, like this between each screw rod can by between its inner spherical and the ball seat cooperate and its external activity joint between the cooperation of end play make it to realize crooked, in middle shell, also be provided with middle mandrel, middle water channel and middle packing element; Under save and include a braced structures in the screw rod, underdrive spline and grease chamber and oil nozzle are arranged in the upper end of its braced structures, its underdrive spline matches with following mandrel, described braced structures also includes cup spring, wheel ball bearing, place kick, sliding bearing and the lower prepared cap that is arranged on down between mandrel and the lower casing, in the lower end of following mandrel the box that connects drill bit is arranged.Bottom at following mandrel also is provided with a deflecting thruster, and a thrust block pad is arranged on this deflecting thruster, is provided with pressure port in the corresponding position of thrust block pad, and between deflecting thruster and the following mandrel seal is arranged.Its deflecting thruster is solidly installed with following mandrel with steady nail by bolt.
Its middle down joint screw rod can have some, and it makes up the same substantially joint, and its quantity can connect 2,3,4,5,6 to increase total moment of torsion according to the needs of hole condition, and its combination is identical.The most following, have traditional approach support, set upright damping and sealed lubrication system thereof.The increase deflecting thrust structure that its downside is all can utilize waterpower to help to increase building force in the build-up process.
Operating principle of the present invention is: on the basis of many lobes mandrel that has helicoid hydraulic motor now and water conservancy diversion packing element, making each helical pitch is a unit, and shell utilizes turning joint realization activity to connect and can be crooked.Mandrel utilizes spherical to be sitting on the interior ball seat of shell, under the ball seat wheel ball bearing is arranged, and to realize the rotation of mandrel orientation, the unified actions of two joints can realize flexibility; And each single-unit connects with spline, the runner unanimity, and the connector standardization can realize that multi-section serial uses, and realizes compound connection, to increase moment of torsion; Between the spherical and ball seat of each connection, the hunting range of directed expansion mandrel, and make and respectively save ball seat swing space on an orientation, promptly realized the purpose of directional curvature.
Power drilling tool two internodes of the present invention can be spent by crooked 6 degree-8, and the single-unit rigid body is shortened, and satisfy the needs that bore the small curve horizontal well; Simultaneously, realize the single-unit series connection, to guarantee on the technology needs to moment of torsion; The direction unanimity of every bent-segment just can help to bore the small curve horizontal well; And the deflecting thruster is in order to utilize pump pressure to promote pillar, from the reverse promotion drill bit acceleration deflecting of deflecting direction.Shorten the deflecting distance, realize final small curve.
Realized above-mentioned requirements, just can be under straight well tube condition, be up to the standard in the short distance, this ability has been arranged, can be in a pit shaft, one by one in the oil reservoir, radiation-like gets out some tens meters, up to a hundred meters entrys and recovers the oil, can effectively improve daily output, the ultimate recovery that can improve the oil field is more than 50%, and viscous crude field is used in combination the recoverable reserves that can improve several times with steam flooding.
Further describe structure of the present invention below in conjunction with accompanying drawing, make it it is had more to be well understood to.
Description of drawings
Fig. 1 is the generalized section of the flexible compound directed helicoid hydraulic motor of the present invention;
Fig. 2 be shown in Fig. 1 the part partial schematic diagram;
Fig. 3 is the expansion schematic diagram of an embodiment of shell body turning joint.
The code name explanation:
Among the spherical mandrel 1-5-of the upper mandrel 6-upper spline 7-upper driving cover of the upper packing element 4-circulatory flow 5-of the upper shell 3-of the 1-top connection 2-8-water channel 10-upper driving fuse 11-spherical 12-ball seat 13-wheel ball bearing 14-housing 16-sealing 17-among the transmission fuse 18-among the mandrel 19-among the water channel 20-under the packing element 21-oil nozzle 22-oil pocket 23-under the spline 24-cup spring 25-wheel ball bearing 26-plug 27-place kick 28-sliding bearing 29-the standby cap 31-sealing of mandrel 30-32-pressure port 33-bolt 34-surely follow closely 35-deflecting thruster 36-thrust block pad 37-38-coupling ring 39-and connect drill bit 40 lower casings
The specific embodiment
Referring to accompanying drawing 1-3, the compound directed helicoid hydraulic motor of flexibility of the present invention is by last joint screw rod, middle joint screw rod reaches joint screw rod formation down, the wherein said joint screw rod of going up includes shell 2 on, the end that should go up shell 2 is top connection 1, be provided with packing element 3 and last mandrel 5 in the last shell 2, be formed with circulatory flow 4 between last packing element and the last mandrel, the bottom of its mandrel 5 connects drive sleeve 7 on by spline 6, this drive sleeve 7 is provided with water channel 8, in drive sleeve 7, be provided with transmission fuse 10 on, should go up transmission fuse 10 is the triangle hollow cylinder, its lower end is configured in the spherical 11, these spherical 11 outsides are provided with ball seat 12, described ball seat 12 matches with wheel ball bearing 13, its spherical 11 has the spherical mandrel 14 of downward extension, this sphere mandrel 14 is middle shells interior 15 of joint screw rod in extending to, between described spherical mandrel 14 and the middle shell 15 seal 16 is arranged, match with transmission fuse 17 in its spherical mandrel 15 bottoms, be equipped with the turning joint 37 that is fitted to each other and is connected on one end of the periphery of shell 2 on the last joint screw rod with on the both ends of the periphery of the middle shell 15 of middle joint screw rod, 38, can be connected in series several with joint screw rod in this, described turning joint 37, there is shell to allow crooked end play H (see figure 3) between 38, like this can be between each screw rod by cooperating and its external activity joint 37 between its inner spherical 11 and the ball seat 12, the cooperation of the end play between 38 makes it to realize crooked, mandrel 18 in also being provided with in middle shell 15, middle water channel 19 and middle packing element 20; Under save and include a braced structures in the screw rod, underdrive spline 23 and oil pocket 22 and oil nozzle 21 are arranged in the upper end of its braced structures, its underdrive spline 23 matches with following mandrel 29, described braced structures also includes cup spring 24, wheel ball bearing 25, place kick 27, sliding bearing 28 and the lower prepared cap 30 that is arranged on down between mandrel 29 and the lower casing 40, in the lower end of following mandrel 29 box 39 that connects drill bit is arranged.Bottom at following mandrel 29 also is provided with a deflecting thruster 35, and a thrust block pad 36 is arranged on this deflecting thruster 35, is provided with pressure port 32 in the corresponding position of thrust block pad 36, and between deflecting thruster 35 and the following mandrel 29 seal 31 is arranged.Its deflecting thruster 35 is solidly installed with following mandrel 29 with steady nail 34 by bolt 33.
Top connection 1 is a directed joint, fluid is through last shell 2, enter between packing element 3 and the last mandrel 5 and produce moment of torsion, mandrel is rotated, mandrel 5 times is passed to drive sleeve 7 with spline 6, water channel 8 is arranged on the drive sleeve, fluid enters transmission fuse 10, and the transmission fuse is a triangle hollow cylinder, and moment of torsion is reached spherical 11, spherical rotates on spheric seat 12, and wheel ball bearing 13 is arranged under the spheric seat.Spherical 11 and spherical mandrel 14 are one, can be transmission fuse 17 in passing under the moment of torsion under 6 degree～8 degree bending conditions, and mandrel 18 during middle transmission core reaches moment of torsion again passes down so successively, and moment of torsion finally reaches drill bit.
Shown thrust block pad 36 is provided in a side of the reverse side of bent screws direction, has 2, becomes 60 degree to arrange to increase the stability that thrust produces.
Claims (3)
1. compound directed helicoid hydraulic motor of flexibility, it is by last joint screw rod, middle joint screw rod reaches joint screw rod formation down, it is characterized in that the described joint screw rod of going up includes shell on, the end that should go up shell is top connection, be provided with packing element and last mandrel in the last shell, be formed with circulatory flow between last packing element and the last mandrel, the bottom of its mandrel connects drive sleeve on by spline, this drive sleeve is provided with water channel, in drive sleeve, be provided with transmission fuse on, should go up the transmission fuse is the triangle hollow cylinder, its lower end is configured in the spherical, this spherical outside is provided with ball seat, described ball seat matches with wheel ball bearing, its spherical has the spherical mandrel of downward extension, this sphere mandrel is in the middle shell of joint screw rod in extending to, between described spherical mandrel and the middle shell seal is arranged, match with transmission fuse in its spherical mandrel bottom, be equipped with the turning joint that is fitted to each other and is connected on one end of the periphery of shell on the last joint screw rod with on the both ends of the periphery of the middle shell of middle joint screw rod, can be connected in series several with joint screw rod in this, there is shell to allow crooked end play between the described turning joint, like this between each screw rod can by between its inner spherical and the ball seat cooperate and its external activity joint between the cooperation of end play make it to realize crooked, in middle shell, also be provided with middle mandrel, middle water channel and middle packing element; Under save and include a braced structures in the screw rod, underdrive spline and grease chamber and oil nozzle are arranged in the upper end of its braced structures, its underdrive spline matches with following mandrel, described braced structures also includes cup spring, wheel ball bearing, place kick, sliding bearing and the lower prepared cap that is arranged on down between mandrel and the lower casing, in the lower end of following mandrel the box that connects drill bit is arranged.
2. the compound directed helicoid hydraulic motor of flexibility according to claim 1, it is characterized in that also being provided with a deflecting thruster in the bottom of following mandrel, on this deflecting thruster a thrust block pad is arranged, be provided with pressure port, and between deflecting thruster and the following mandrel seal is arranged in the corresponding position of thrust block pad.
3. the compound directed helicoid hydraulic motor of flexibility according to claim 2 is characterized in that its deflecting thruster is solidly installed with following mandrel with steady nail by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101003526A CN1314878C (en) | 2003-10-13 | 2003-10-13 | Flexible compound directional screw drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101003526A CN1314878C (en) | 2003-10-13 | 2003-10-13 | Flexible compound directional screw drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1607315A CN1607315A (en) | 2005-04-20 |
| CN1314878C true CN1314878C (en) | 2007-05-09 |
Family
ID=34755923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101003526A Expired - Fee Related CN1314878C (en) | 2003-10-13 | 2003-10-13 | Flexible compound directional screw drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1314878C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165575B (en) * | 2017-07-17 | 2023-06-16 | 河北中荣石油机械有限责任公司 | Ultrashort radius well deflecting drilling tool |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2091945U (en) * | 1991-05-06 | 1992-01-01 | 上海工程成套总公司 | Sealing universal joint of cylindrical corrugated pipe |
| CN2152070Y (en) * | 1993-06-18 | 1994-01-05 | 石油大学(北京) | Directional Articulated Short Screw Drilling Tools |
-
2003
- 2003-10-13 CN CNB2003101003526A patent/CN1314878C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2091945U (en) * | 1991-05-06 | 1992-01-01 | 上海工程成套总公司 | Sealing universal joint of cylindrical corrugated pipe |
| CN2152070Y (en) * | 1993-06-18 | 1994-01-05 | 石油大学(北京) | Directional Articulated Short Screw Drilling Tools |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1607315A (en) | 2005-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070509 Termination date: 20091113 |