CN108979533B - Rotary steering tool with bag - Google Patents
Rotary steering tool with bag Download PDFInfo
- Publication number
- CN108979533B CN108979533B CN201810810772.XA CN201810810772A CN108979533B CN 108979533 B CN108979533 B CN 108979533B CN 201810810772 A CN201810810772 A CN 201810810772A CN 108979533 B CN108979533 B CN 108979533B
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- base
- outer cylinder
- fixedly connected
- protrusion
- locking mechanism
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
Abstract
The invention relates to a drilling tool in the drilling field of petroleum, natural gas and the like, in particular to a rotary steering tool with a bag. The technical problem is as follows: the existing tool has the defects of complex structure, more internal cavities and incompactness. The technical scheme is as follows: a protrusion is fixedly connected to the periphery of the tool to push against the borehole wall. The technical characteristics are as follows: comprises a mandrel, an outer cylinder, a base and a protrusion; the rear end of the base is fixedly connected with a drill column; the base is fixedly connected with the mandrel, and the front end of the mandrel is fixedly connected with the drill bit; the rear end of the outer barrel is rotatably sleeved on the base, and the front end of the outer barrel is rotatably sleeved on the mandrel; the protrusion is fixedly connected to one side of the outer periphery of the front end of the outer cylinder. Has the advantages that: one side of the outer cylinder is fixedly connected with a protrusion, so that the drill bit can be inclined towards the opposite side well wall, the single-side cutting of the drill bit is increased, and the deflecting effect is realized; this scheme compact structure, inside cavity are few, are of value to reducing the requirement to the material, improve the working life of rotatory direction instrument.
Description
Technical Field
The invention relates to a drilling tool in the drilling field of petroleum, natural gas and the like, in particular to a rotary steering tool with a bag.
Background
In the prior art, rotary steering drilling tools mainly comprise a push type drilling tool and a directional drilling tool. The push-type rotary steering drilling tool is characterized in that three telescopic wing ribs are uniformly arranged on the periphery of the tool, and the three wing ribs can selectively push against a well wall in a set direction to cause the drill bit to deviate, so that the single-side cutting of the drill bit is increased, the control of the drilling direction of the drill bit is realized, and the purpose of steering is achieved; however, the volume, and in particular the radius, of the pilot drilling tool is limited, and the provision of three retractable ribs complicates its construction and requires a large internal cavity and high material requirements.
The directional rotary steerable drilling tool provides a steering effect by providing a non-uniform inclination angle to the drill bit with a built-in biasing mechanism. However, the tool has a complex structure, a plurality of movable parts, a large internal cavity and a not compact structure.
The rotary guiding drilling tool is simple in structure, few in inner cavity and compact in structure, and is needed.
Disclosure of Invention
The invention aims at the technical problems that: the existing rotary steering drilling tool has a complex structure, a plurality of internal cavities and is not compact.
The technical scheme adopted by the invention is as follows: the rotary guiding tool is fixedly connected with a protrusion on the periphery, the protrusion pushes against the well wall, and the drill bit can be set to deviate to the well wall on one side, so that the single-side cutting of the drill bit is increased, and the guiding purpose is realized.
The invention comprises the following technical characteristics: the rotary guide tool with the bag comprises a mandrel, an outer barrel and a base.
The rear end of the base is fixedly connected with a drill string and used for connecting the rotary steering tool with the bag to the drill string; the base fixed connection dabber, dabber front end fixed connection drill bit for transmit the moment of torsion that the rotatory production of drilling string to the drill bit, realize the cutting to the stratum.
The rear end of the outer barrel is rotatably sleeved on the base, and the front end of the outer barrel is rotatably sleeved on the mandrel; the outer barrel can transversely stand still relative to the well wall through friction (does not rotate relative to the well wall), and provides support for the rotation of the mandrel.
The method is characterized in that: the rotary guide tool with the bag also comprises a protrusion which is fixedly connected to one side of the periphery of the front end of the outer cylinder; when the outer cylinder transversely stands relative to the well wall through friction, the protrusions push against the corresponding well wall on one side, so that the drill bit deflects to the opposite well wall on the other side, single-side cutting of the drill bit is increased, and the purpose of guiding is achieved.
In the present application, the front end refers to the end close to the drill bit; the rear end is the end close to the drill stem and corresponds to the front end. In the present application, the term "setting" means setting and determining in advance.
Further, the wrapped rotary steerable tool further comprises a drive mechanism; the driving mechanism is arranged between the outer cylinder and the base and can be controlled to drive the outer cylinder and the base to rotate relatively. During the directional drilling process, the rotary steering tool with the bag may deviate from the set offset direction, and the rotary steering tool with the bag can be maintained to always point to the set offset direction by driving the outer cylinder and the base to rotate relatively.
Furthermore, the rotary steering tool with the bag also comprises a locking mechanism, wherein the locking mechanism is arranged between the outer barrel and the base, and can lock the base and the outer barrel together for composite drilling.
Further, the locking mechanism may be a friction type locking mechanism; the friction type locking mechanism comprises a cavity, a thrust mechanism, a friction block and a friction surface; the thrust mechanism can move back and forth in the cavity to push the friction block to extrude or separate from the friction surface, so that the locking or unlocking state is realized.
Further, the locking mechanism can also be a clamping type locking mechanism, and the clamping type locking mechanism comprises a cavity, a thrust mechanism, a movable clamping tongue and a clamping groove; the thrust mechanism can move back and forth in the cavity to push the movable clamping tongue to be inserted into or pulled out of the clamping groove, so that the locking or unlocking state is realized.
Furthermore, the inner part of the protrusion is provided with a cavity which is arranged at one side of the protrusion close to the outer cylinder.
Further, the wall of the outer cylinder is provided with an opening, and the opening is communicated with the cavity in the protrusion; the opening corresponds to the cavity, and a valuable near-bit inner space can be formed.
Further, a logging-while-drilling instrument, such as a near-bit gamma-ray logging-while-drilling tool, is disposed in the space formed by the cavity and the opening. The space in which the logging-while-drilling instrument can be arranged in the drill string is very limited, meanwhile, the closer the logging-while-drilling instrument is to the drill bit, the higher the value of the logging-while-drilling instrument is, the space for accommodating the logging-while-drilling instrument is properly arranged at the position very close to the drill bit in the technical scheme, and the drill string has obvious beneficial effects.
Further, the protrusions have a bilaterally symmetrical structure. Which is beneficial to the rotation of the drill string in the wellbore.
The invention also provides a drilling tool assembly which is provided with the rotary guide tool with the bag, wherein the rear end of the rotary guide tool with the bag is connected with a drill stem, and the front end of the rotary guide tool with the bag is connected with a drill bit.
Because the rotary guiding tool with the bag is fixedly connected with the protrusion on one side of the outer cylinder, the outer cylinder seems to be longer than the bag, and therefore, the name of the scheme is defined as the rotary guiding tool with the bag, and the rotary guiding tool with the bag is simple, accurate and vivid.
In the present invention, necessary components, units or systems are provided where necessary according to a known technique in the art. For example, a power supply is arranged on a drill string and is provided for a locking mechanism and a driving mechanism, or is transmitted to an outer barrel through a conductive slip ring and is provided for a logging-while-drilling instrument; arranging a control system on the drill string, arranging a bearing at a necessary position, and arranging a sealing member at the necessary position; the drilling fluid is conveyed to the bottom of the well through a drill string, a mandrel and a drill bit.
The invention has the following beneficial effects: 1) one side of the outer cylinder of the wrapped rotary guiding tool is fixedly connected with a protrusion, and the outer cylinder and the well wall are transversely static, so that the drill bit can be inclined towards the opposite well wall, the single-side cutting of the drill bit is increased, and the deflecting effect is realized; 2) The outer barrel and the protrusions can rotate together with the drill string through locking of the locking mechanism, and stable and oblique drilling is achieved; 3) the rotary guiding tool with the bag has a compact structure and few internal cavities, is beneficial to reducing the requirements on materials and prolonging the service life of the rotary guiding tool.
Drawings
FIG. 1 is a schematic diagram of a rotary steerable tool with a bag.
FIG. 2 is a schematic sectional view of the position of the protrusion.
Fig. 3 is a schematic structural diagram of the driving mechanism.
Fig. 4 is a schematic sectional view of the locking mechanism.
Fig. 5 is a schematic view of a friction type locking mechanism.
FIG. 6 is a schematic view of the latch-type locking mechanism.
In the figure, 1 mandrel, 2 base, 3 drill string, 4 drill bit, 10 outer cylinder, 12 opening, 14 protrusion, 16 cavity, 20 driving mechanism, 22 first part, 24 second part, 30/40 locking mechanism, 32 cavity, 34 thrust mechanism, 36 friction block, 38 friction surface, 42 cavity, 44 thrust mechanism, 46 movable clamping tongue and 48 clamping groove.
Detailed Description
It should be noted that, in the present invention, the technical features of the embodiments and the examples may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Preferred embodiments of the present invention will be described in further detail with reference to fig. 1 to 6.
As shown in fig. 1, a cross section of the wrapped tool along the axis of the drill string 3 is depicted.
The protrusions 14 are fixedly connected to one side of the outer periphery of the front end of the outer cylinder 10, when the outer cylinder 10 transversely stands relative to a well wall through friction, the protrusions 14 push against the corresponding well wall on one side, the drill bit 4 is enabled to deviate to the opposite well wall on the other side, and therefore single-side cutting of the drill bit 4 is increased, and the guiding purpose is achieved.
The rear end of the base 2 is fixedly connected with a drill string 3 and is used for connecting the wrapped rotary steering tool to the drill string 3; the base 2 is fixedly connected with the mandrel 1, the front end of the mandrel 1 is fixedly connected with the drill bit 4, and the torque generated by rotation of the drill string 3 is transmitted to the drill bit 4 to cut a rock stratum.
The rear end of the outer cylinder 10 is rotatably sleeved on the base 2, and the front end of the outer cylinder 10 is rotatably sleeved on the mandrel 1; the internal components of the rotary steerable tool used to wrap the wrapped pack may be laterally stationary relative to the borehole wall (not rotating relative to the borehole wall) by friction, providing support for the rotation of the mandrel 1.
The driving mechanism 20 is disposed between the outer cylinder 10 and the base 2, and is controlled to drive the outer cylinder 10 and the base 2 to rotate relatively.
The locking mechanism 30 is arranged between the outer cylinder 10 and the base 2, and can lock the base 2 and the outer cylinder 10 together for composite drilling.
FIG. 2 is a cross-section taken along line A-A of FIG. 1; the protrusion 14 is fixedly connected to one side of the outer circumference of the front end of the outer cylinder 10, and the protrusion 14 has a bilaterally symmetrical structure.
The cavity 16 is disposed on a side of the protrusion 14 adjacent to the outer tub 10. The opening 12 is provided at a position where the outer cylinder 10 is connected to the protrusion 14, and corresponds to and is connected to the cavity 16. A logging-while-drilling instrument, such as a near-bit 4 gamma-ray logging-while-drilling tool, is disposed in the space formed by the cavity 16 and the opening 12.
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1; the driving mechanism 20 is disposed between the outer cylinder 10 and the base 2, and is controlled to drive the outer cylinder 10 and the base 2 to rotate relatively. The driving mechanism 20 may be such that it comprises a first portion 22 and a second portion 24, the first portion 22 is fixedly disposed in the outer cylinder 10, for example, a stator of a motor, the second portion 24 is fixedly attached to the base 2, for example, a rotor of a motor, the first portion 22 and the second portion 24 cooperate to rotate, and the outer cylinder 10 and the base 2 are driven to rotate relatively. During the directional drilling process, the wrapped rotary steerable tool may deviate from the set offset direction, and by driving the outer cylinder 10 and the base 2 to rotate relatively, the wrapped rotary steerable tool can be maintained to always point to the set offset direction.
FIG. 4 is a cross-section taken along line C-C of FIG. 1; the locking mechanism 30 is arranged between the outer cylinder 10 and the base 2, and can lock the base 2 and the outer cylinder 10 together, and the outer cylinder 10 rotates along with the drill string 3 for steady drilling.
As shown in fig. 5, the locking mechanism 30 may be a friction-type locking mechanism 30; the friction type locking mechanism 30 comprises a cavity 32, a thrust mechanism 34, a friction block 36 and a friction surface 38; the pushing mechanism 34 can move back and forth in the cavity 32 to push the friction block 36 connected with the pushing mechanism to press or separate from the friction surface 38, so as to realize a locking or unlocking state.
As shown in fig. 6, the locking mechanism 40 may also be a snap-fit locking mechanism 40, and the snap-fit locking mechanism 40 includes a cavity 42, a thrust mechanism 44, a movable tongue 46, and a slot 48; the pushing mechanism 44 can move back and forth in the cavity 42 to push the movable latch 46 connected with the pushing mechanism to be inserted into or pulled out of the slot 48, so as to realize a locking or unlocking state.
The working modes of the invention are as follows: 1) in the directional drilling mode, one side of the front end of the wrapped rotary steering tool is fixedly connected with a protrusion 14, the locking mechanism 30 is used for unlocking, the outer cylinder 10 and the well wall are transversely static, so that the drill bit 4 inclines to the opposite side of the well wall, the single-side cutting of the drill bit 4 is increased, and the deflecting effect is realized; 2) in the steady-slope drilling mode, the locking mechanism 30 is used for locking, the outer cylinder 10 and the protrusions 14 rotate along with the drill string 3, and the protrusions 14 cannot fixedly point to the wall of the well on any side, so that steady-slope drilling is realized.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment and the components, but on the contrary, is intended to cover various modifications, combinations of features, equivalent arrangements, and equivalent components included within the spirit and scope of the appended claims. Further, the dimensions of features of each component appearing in the figures are not limiting, where the dimensions of each component may differ from the dimensions of the components depicted in the figures. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (8)
1. A wrapped rotary steerable tool, comprising: the device comprises a mandrel, an outer cylinder, a base, a protrusion, a driving mechanism and a locking mechanism;
the rear end of the base is fixedly connected with a drill column; the base is fixedly connected with the mandrel, and the front end of the mandrel is fixedly connected with the drill bit; the rear end of the outer barrel is rotatably sleeved on the base, and the front end of the outer barrel is rotatably sleeved on the mandrel;
the method is characterized in that:
the protrusion is fixedly connected to one side of the periphery of the front end of the outer cylinder;
the driving mechanism is arranged between the outer cylinder and the base and can be controlled to drive the outer cylinder and the base to rotate relatively;
the locking mechanism is arranged between the outer cylinder and the base and can lock the base and the outer cylinder together.
2. The wrapped rotary steerable tool according to claim 1, characterized in that: the locking mechanism is a friction type locking mechanism; the friction type locking mechanism comprises a cavity, a thrust mechanism, a friction block and a friction surface; the thrust mechanism can move back and forth in the cavity to push the friction block to extrude or separate from the friction surface.
3. The wrapped rotary steerable tool according to claim 1, characterized in that: the locking mechanism is a clamping type locking mechanism, and the clamping type locking mechanism comprises a cavity, a thrust mechanism, a movable clamping tongue and a clamping groove; the thrust mechanism can move back and forth in the cavity to push the movable clamping tongue to be inserted into or pulled out of the clamping groove.
4. The wrapped rotary steerable tool according to any one of claims 1, 2, and 3, wherein: the inner part of the protrusion is provided with a cavity which is arranged at one side of the protrusion close to the outer cylinder.
5. The wrapped rotary steerable tool according to claim 4, characterized in that: the wall of the outer cylinder is provided with an opening which is communicated with the cavity in the protrusion.
6. The wrapped rotary steerable tool according to claim 5, characterized in that: and a logging-while-drilling instrument is arranged in a space formed by the cavity and the opening.
7. The wrapped rotary steerable tool according to any of claims 1, 2, 3, 5, 6, wherein: the protrusions are in a bilaterally symmetrical structure.
8. A drilling assembly, characterized by: comprising a wrapped tool according to any of claims 1-7, connected at its rear end to a drill string and at its front end to a drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810772.XA CN108979533B (en) | 2018-07-23 | 2018-07-23 | Rotary steering tool with bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810772.XA CN108979533B (en) | 2018-07-23 | 2018-07-23 | Rotary steering tool with bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108979533A CN108979533A (en) | 2018-12-11 |
| CN108979533B true CN108979533B (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810810772.XA Active CN108979533B (en) | 2018-07-23 | 2018-07-23 | Rotary steering tool with bag |
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| CN (1) | CN108979533B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827883B (en) * | 2020-05-29 | 2022-02-25 | 中国石油天然气集团有限公司 | Rotary guide tool |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051316A (en) * | 2013-01-29 | 2015-11-11 | 普拉德研究及开发股份有限公司 | High dogleg steerable tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207319U (en) * | 1987-07-17 | 1988-03-09 | 中国矿业学院 | Drilling rig for bending holes |
| US6283208B1 (en) * | 1997-09-05 | 2001-09-04 | Schlumberger Technology Corp. | Orienting tool and method |
| CN101864897B (en) * | 2010-05-18 | 2013-02-20 | 中国海洋石油总公司 | Method for controlling eccentric displacement vector of rotary steering tool |
| CN203374204U (en) * | 2013-07-01 | 2014-01-01 | 西安石油大学 | Controllable bent connector guide device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051316A (en) * | 2013-01-29 | 2015-11-11 | 普拉德研究及开发股份有限公司 | High dogleg steerable tool |
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| CN108979533A (en) | 2018-12-11 |
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Effective date of registration: 20230905 Address after: 252000 Shi Shi Li Yuan Shi Li Jing Cun, Yanggu County, Liaocheng City, Shandong Province Patentee after: Yanggu Litong Drilling Tool Manufacturing Co.,Ltd. Address before: 413044 9 groups of Xincun village, Penjia Mountain Township, Heshan District, Yiyang, Hunan Patentee before: Xu Zhixiang |