CN103334697A - Rotary guide device of drilling tool and drilling tool - Google Patents
Rotary guide device of drilling tool and drilling tool Download PDFInfo
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- CN103334697A CN103334697A CN2013103138748A CN201310313874A CN103334697A CN 103334697 A CN103334697 A CN 103334697A CN 2013103138748 A CN2013103138748 A CN 2013103138748A CN 201310313874 A CN201310313874 A CN 201310313874A CN 103334697 A CN103334697 A CN 103334697A
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Abstract
The invention discloses a rotary guide device of a drilling tool. The rotary guide device comprises a rotating shaft (1) of the drilling tool, wherein the rotating shaft is of a flexible hollow tubular member, and drilling fluid flows in the rotating shaft in an operating state of the drilling tool. The rotary guide device further comprises an outer sleeve (2) and a bias driving assembly (3), wherein the outer sleeve (2) surrounds the outside of the rotating shaft, the two ends of the outer sleeve (2) are in sealed connection with the external wall of the rotating shaft, and the bias driving assembly (3) is arranged in the outer sleeve so as to apply a biasing force on the rotating shaft. The rotary guide device further comprises bias driving fluid and a bias control assembly, wherein the bias driving fluid is formed by the drilling fluid and is used for driving the bias driving assembly, and the bias control assembly is used for controlling the bias driving fluid. The invention further discloses the drilling tool which is provided with the rotary guide device. According to the drilling tool, the structure is simple, and the manufacturing cost and operation maintaining cost of the drilling tool can be reduced greatly while the directional whipstocking function of the drilling tool is realized.
Description
Technical field
The present invention relates to the drilling well field, particularly, relate to a kind of rotary steering device and drilling tool of drilling tool.
Background technology
The needs of exploration and development situation are promoting differentiation and the development of well type, and complex structural wells such as extended reach directional well, ultra-thin oil-reservoir water horizontal well, multi-bottom branch directional well shared ratio in oilfield prospecting developing is increasing.The high new drilling techniques that the rotary steerable drilling technology in time occurs for the needs that adapt to these complex structural well drillng operations just is research emphasis and the developing direction of modern steerable drilling.
In the prior art, the rotary steering of drilling tool is realized by dual mode usually.A kind of is pushing type, and this mode makes drill bit obtain desired biasing guiding force by the flexible backup borehole wall of nearly drill bit guide pad.Another kind is the sensing formula, and this mode setovers the turning cylinder of drilling tool by a cover bias unit, for drill bit provides one and the inconsistent inclination angle of borehole axis, makes drill bit obtain desired biasing guiding force.Wherein, the drilling tool that points to the rotary steering of formula does not need the rib guide pad backup borehole wall to change direction, so its guide effect is not subjected to the influence of the imperfect or well hole enlargement in stratum, and the Use Limitation fruit is better in the well of soft formation or hole enlargement.
Yet the drilling tool structure of sensing formula rotary steering of the prior art is complicated unusually.The biasing mechanism of this drilling tool is made up of one group of mutually nested eccentric annulus, drilling tool vertically creep into and operating mode such as directional inclination between the process changed, be exactly in fact the changing process of eccentric annulus compound mode.And the change of the compound mode of eccentric annulus then realizes by being implanted to the automatic control system that a large amount of electrical equipment in the drilling tool and Hydraulic Elements form.These electrical equipments and Hydraulic Elements and for battery or the cable of the power supply of these elements all need be along with drill bit enters into the down-hole.The complex working condition of down-hole and the length of drilling tool need the huge element of these quantity and power supply part thereof can adapt to harsh operating environment apart from operation, have aggravated to make difficulty and the cost of this drilling tool thus more.In addition, the structure of the complexity of drilling tool also causes the operation of drilling tool and maintenance cost too expensive.
Summary of the invention
The rotary steering device and the drilling tool that the purpose of this invention is to provide a kind of drilling tool simple in structure are to reduce manufacturing cost and the operation expense of drilling tool in the directional inclination function that realizes drilling tool.
To achieve these goals, the invention provides a kind of rotary steering device of drilling tool, this rotary steering device comprises the turning cylinder of drilling tool, and turning cylinder is the tube-like piece of the hollow of flexibility, and under the running status of drilling tool, flowing in the turning cylinder has drilling fluid; The rotary steering device also comprises the outer sleeve that the outer wall of the outside that is centered around turning cylinder and two ends and turning cylinder is tightly connected, and is arranged in the outer sleeve to apply the biasing driven unit of bias force to turning cylinder; Wherein, the rotary steering device also comprises the biasing drive fluid that is used for driving the biasing driven unit that is formed by drilling fluid, and for the biasing Control Component that the biasing drive fluid is controlled.
Preferably, offer via on the tube wall that is positioned at outer sleeve inside of turning cylinder, form the biasing drive fluid to allow drilling fluid from the inner flow direction biasing driven unit of turning cylinder; And along the flow direction of biasing drive fluid, the biasing driven unit is arranged on the downstream position of via.
Preferably, along the biasing drive fluid from the upstream to the direction in downstream, the biasing driven unit comprises: fixture offers the drainage channel of top to the bottom that connects fixture on this fixture; And tumbler, offer a plurality of driving grooves on this tumbler; Wherein, drive the opening of groove towards the outlet of drainage channel, and can promote to drive the cell wall of groove from the biasing drive fluid that drainage channel flows out, setover so that tumbler drives turning cylinder.
Preferably, fixture comprises: stator, and this stator is fixedly connected on the inwall of outer sleeve, and the centre of stator offers the stator through hole that extends and allow turning cylinder to pass along the axial direction of outer sleeve; Locating ring, this locating ring is arranged on the top of stator, and the outer peripheral edges of locating ring are sealedly connected on the inwall of outer sleeve, offers groove along circumferential direction on the inner peripheral of locating ring, and the groove depth direction of this groove is extended along the radial direction of locating ring; And sealing plate, the sealing baffle plate covers the top of stator through hole, and in the groove of the inner peripheral of the outer peripheral edges of sealing plate embedding locating ring, the inner peripheral of sealing plate and the outer wall of turning cylinder are tightly connected; Wherein, drainage channel connects locating ring and stator, and arranges at intervals between the outer peripheral edges of the bottom land of the groove of the inner peripheral of locating ring and sealing plate.
Preferably, tumbler comprises: rotor, this rotor to be can being connected on the inwall of outer sleeve around the mode that the axis of outer sleeve rotates, and the centre of rotor position offers the rotor through hole corresponding with stator through hole position, and this rotor through hole is with respect to the eccentric axis setting of outer sleeve; Wherein, driving groove is arranged on the end face of rotor; And geared sleeve, this geared sleeve is set on the outer wall of turning cylinder and is sealed in the rotor through hole; Wherein, the cross sectional area of rotor through hole is greater than the cross sectional area of geared sleeve, being respectively arranged with on the hole wall of rotor through hole and on the outer wall of geared sleeve can the intermeshing first tooth portion and the second tooth portion, and the number of teeth of the first tooth portion is more than the number of teeth of the second tooth portion.
Preferably, offer the pressure release runner on the rotor, the entrance of pressure release runner with drive groove and be connected, the outlet of pressure release runner is arranged on the lateral wall that rotor and inwall outer sleeve adjoin mutually; And offer the by-pass prot corresponding with the position of the outlet of pressure release passage on the sidewall of outer sleeve, pressure release passage intermittently is connected with the outside of outer sleeve via by-pass prot.
Preferably, the biasing Control Component comprises: guide portion, this guide portion are arranged in the tube chamber of turning cylinder, flow to via with the guided drilling fluid; And pressure opening and closing valve, this pressure opening and closing valve is arranged on the via place, and the aperture of pressure opening and closing valve can change along with the size of the pressure of the drilling fluid in the turning cylinder.
Preferably, the biasing Control Component also comprises: position sensor, this position sensor are arranged on the drill bit place of drilling tool, in order to detect and to send the signal at the angle of inclination of turning cylinder; Pressure-control valve, this pressure-control valve are arranged on the turning cylinder of the upstream position of the outer sleeve of the flow direction of drilling fluid, in order to the size of the pressure of controlling drilling fluid; And control module, this control module is in response to the signal of position sensor, the aperture of controlled pressure control valve.
Preferably, guide portion is concave shaped cavity, and this concave shaped cavity is connected with via, and the opening of concave shaped cavity is towards the upstream side of via.
On the other hand, the present invention also provides a kind of drilling tool, and above-mentioned rotary steering device is installed on this drilling tool.
By technique scheme, the invention provides a kind of rotary steering device that utilizes the drilling tool that downhole fluid carries out mechanical rotary steering.This rotary steering device utilizes the biasing drive fluid that is formed by drilling fluid to drive the biasing driven unit, so that the biasing driven unit applies the biasing guiding force to turning cylinder.And after the certain amount of deflection of the stressed generation of turning cylinder, can produce an angle of inclination at the shaft part of the close drill bit of turning cylinder, thereby make drill bit obtain desired biasing guide direction.That is to say, in rotary steering device of the present invention, only just realized the deflecting function of drilling tool by drilling fluid and mechanical component, and no longer needed to arrange the down-hole electronic control system of complex and expensive.By this, simplify the structure of drilling tool greatly, and then reduced manufacturing cost and the operation expense of drilling tool.
Other features and advantages of the present invention will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of manual, is used from explanation the present invention with the following specific embodiment one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the sectional view according to kick-off device of the present invention;
Fig. 2 is the schematic perspective view that shows the structure of stator and rotor;
Fig. 3 shows that geared sleeve is set in the schematic perspective view of the structure on the turning cylinder;
Fig. 4 shows that stator drainage channel and rotor drive the schematic diagram of the structural relation of groove;
Fig. 5 is the sectional view after the A-A line in Fig. 1 is cut open;
Fig. 6 is the sectional view that the kick-off device shown in Fig. 1 is in the another location;
Fig. 7 is the sectional view after the B-B line in Fig. 6 is cut open;
Fig. 8 is the schematic diagram that shows the structure of guide portion and pressure opening and closing valve.
Description of reference numerals
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.Should be understood that the specific embodiment described herein only is used for description and interpretation the present invention, is not limited to the present invention.
With reference to figure 1, the invention provides a kind of rotary steering device of drilling tool.This rotary steering device comprises the turning cylinder 1 of described drilling tool.This turning cylinder 1 is the tube-like piece of the hollow of flexibility, and the one end is connected with rotating power source, and the other end is connected with drill bit.Under the running status of drilling tool, flowing in the turning cylinder 1 has drilling fluid, and this drilling fluid flows to the end that is connected with drill bit of turning cylinder 1 from an end that is connected with rotating power source of turning cylinder 1, and this drilling fluid is taken on the rock by annular space and returned.
More specifically, as shown in Figure 1, the rotary steering device also comprises outer sleeve 2.This outer sleeve 2 is centered around the outside of turning cylinder 1, and the outer wall of the two ends of outer sleeve 2 and turning cylinder 1 is tightly connected.Like this, between the inwall of the outer wall of turning cylinder 1 and outer sleeve 2, form airtight space.According to embodiments of the invention, an end of the close rotating power source of outer sleeve 2 is connected rotationally by the outer wall of clutch shaft bearing 7 with turning cylinder 1.And, at the end away from rotating power source of clutch shaft bearing 7, be provided with first seal snap ring 71 between the outer wall of the inwall that is connected outer sleeve 2 and turning cylinder 1.According to embodiments of the invention, an end of the close drill bit of outer sleeve 2 is connected with the outer wall of turning cylinder 1 rotationally by second bearing 8.And, at the end away from drill bit of second bearing 8, be provided with second seal snap ring 81 between the outer wall of the inwall that is connected outer sleeve 2 and turning cylinder 1.Wherein, first seal snap ring 71 and second seal snap ring 81 are used for the inner space of outer sleeve 2 is isolated with respect to outside seal.
Further, according to embodiments of the invention, be provided with biasing driven unit 3 in the outer sleeve 2, in order to apply the biasing guiding force to turning cylinder 1.And second bearing 8 preferably is set to the bulb oscillating bearing.When biasing takes place in the turning cylinder 1 that is positioned at outer sleeve 2 inside, under the support of second bearing 8, turning cylinder 1 run-off the straight between outer sleeve 2 and drill bit, thereby the directional inclination of realization drilling tool.
In more detail, according to embodiments of the invention, the rotary steering device also comprises the biasing drive fluid.This biasing drive fluid is formed by drilling fluid, in order to driving biasing driven unit 3, thereby makes biasing driven unit 3 apply the biasing guiding force to turning cylinder 1.In addition, according to embodiments of the invention, the rotary steering device also comprises the biasing Control Component, in order to the biasing drive fluid is controlled, thereby makes biasing driven unit 3 apply default biasing guiding force to turning cylinder 1.
According to above-mentioned, rotary steering device of the present invention has the shaft part of bearings to apply certain biasing guiding force by the biasing driven unit at the two ends of turning cylinder 1, makes turning cylinder 1 produce certain amount of deflection.And then, make the shaft part of the close drill bit of turning cylinder 1 produce an angle of inclination.The size of the biasing guiding force that the biasing driven unit applies has determined the size at angle of inclination, and the size at angle of inclination has then determined the size of the deflecting ability of rotary steering device.In the present invention, the biasing driven unit is driven by the biasing drive fluid, and the biasing drive fluid is formed by drilling fluid.By this, no longer need to arrange the down-hole electronic control system of complex and expensive in the rotary steering device of the present invention, thereby simplified the structure of drilling tool greatly, and then reduced manufacturing cost and the operation expense of drilling tool.
Continuation according to embodiments of the invention, offers via 11 with reference to figure 1 on the turning cylinder 1, use so that drilling fluid can flow to the outside of turning cylinder 1 from the inside of turning cylinder 1, thereby form the biasing drive fluid.As shown in fig. 1, via 11 is opened on the tube wall of the inside that is positioned at outer sleeve 2 of turning cylinder 1, and along the flow direction of biasing drive fluid, via 11 is arranged on the upstream position of biasing driven unit 3.Like this, biasing is after drive fluid flows out from via 11, the driven unit of can automatic stream setovering, and need not to arrange other driving guide member.Certainly, if special-purpose driving guide member is set the drive fluid of setovering is implemented directed driving guiding, then the relative position between via 11 and the biasing driven unit 3 also can be arranged to above-mentioned set-up mode mode in addition.In addition, according to embodiments of the invention, via 11 can be provided with one or more, preferably, one to four via 11 can be set.
With reference to figure 1 and Fig. 4, according to embodiments of the invention, biasing driven unit 3 comprises fixture and tumbler.Wherein, tumbler can drive turning cylinder 1 and setovers with respect to fixture.According to embodiments of the invention, along the flow direction of biasing drive fluid, fixture is arranged on the upstream position of tumbler.
More specifically, on fixture, offer the drainage channel 312 that connects to the bottom from the top.Should be appreciated that here said top and bottom are to determine relatively along the flow direction of biasing drive fluid.In other words, drainage channel 312 extends along the direction from the upstream to the downstream of fixture.According to preferred embodiment of the present invention, can offer a plurality of drainage channels 312 at fixture.These drainage channels 312 can evenly distribute along the circumferential direction of fixture, in order to strengthen the driving force of biasing drive fluid.
Further, on tumbler, offer a plurality of driving grooves 322.Preferably, driving groove 322 is opened on the end face of tumbler.According to embodiments of the invention, drive the opening of groove 322 towards the outlet setting of drainage channel 312.The biasing drive fluid can flow to driving groove 322 and formation to driving the motive force of groove 322 after flowing out from drainage channel 312.Particularly, as shown in Figure 4, drainage channel 312 is arranged to curved shape, and at the position near the end of drainage channel 312, drainage channel 312 forms the bigger bend of cambers, and the opening direction in the exit of this bend is towards the rotation direction of tumbler.
According to above-mentioned, the biasing drive fluid in drainage channel 312 from the upstream to the mobile fluid dynamic energy that carries in downstream, and above-mentioned bend can make the fluid dynamic energy that gathers take place to discharge suddenly and pour in the driving groove 322, is subjected to displacement thereby promotion drives the cell wall of groove 322.Like this, promote to drive groove 322 by the biasing drive fluid and rotate, can realize that tumbler rotates with respect to fixture.And tumbler can drive turning cylinder 2 when rotating and setovers.
With reference to figure 1, according to embodiments of the invention, fixture comprises stator 31.Stator 31 is fixedly connected on the inwall of outer sleeve 2.As shown in fig. 1, the centre of stator 31 offers the stator through hole 311 that extends and allow turning cylinder 1 to pass along the axial direction of outer sleeve 2, drainage channel 312 be distributed in stator through hole 311 around.
According to embodiments of the invention, fixture also comprises the locating ring 4 that is arranged on stator 31 tops, and drainage channel 312 connects locating ring 4 and stator 31 arranges.The outer peripheral edges of locating ring 4 are sealedly connected on the inwall of outer sleeve 2, form in the axial direction spacing to stator 31.Offer groove along circumferential direction on the inner peripheral of locating ring 4, the groove depth direction of this groove is extended along the radial direction of locating ring 4.
Further, according to embodiments of the invention, fixture also comprises the sealing plate 41 at the top that covers stator through hole 311.Wherein, the centre of sealing plate 41 offers the through hole that allows turning cylinder 1 to pass, and the inner peripheral of sealing plate 41 (being the hole wall of through hole) is tightly connected with the outer wall of turning cylinder 1.In addition, in the groove of the inner peripheral of the outer peripheral edges of sealing plate 41 embedding locating ring 4, and arrange at intervals between the outer peripheral edges of the bottom land of the groove of the inner peripheral of locating ring 4 and sealing plate 41.By this, when turning cylinder 1 was moved, sealing plate 41 can move in the groove of locating ring 4, but sealing plate 41 can block 311 formation of stator through hole all the time.
According to above-mentioned, by locating ring 4 and sealing plate 41 are set, can be so that the biasing drive fluid can only flow away from drainage channel 312, the discrete loss takes place in the energy of the drive fluid that can prevent from by this setovering.And because sealing plate 41 can move with respect to locating ring 4, sealing plate 41 can not move to constitute and hinder the biasing of turning cylinder 1.In addition, for the sealing effectiveness of further enhanced leaktightness baffle plate 41, can in groove, fill some flexible sealing materials.Certainly, these encapsulants should be to the mobile formation adverse effect of sealing plate 41 with respect to locating ring 4.
According to above-mentioned, sealing plate 4 is arranged on the downstream position of via 11, surrounded by inwall, first seal snap ring 71, locating ring 4 and the sealing plate 41 of the outer wall of turning cylinder 1, outer sleeve 2 and to form a cavity, 11 of vias are opened on the tube wall of the turning cylinder 1 that is arranged in this cavity.The biasing drive fluid that flows out from the inside of turning cylinder 1 at first can be collected in this cavity.The size of the pressure reduction between the pressure by the drilling fluid of control in the turning cylinder 1 and the pressure of the biasing drive fluid in this cavity can be controlled the size of the driving force of the fluid in the drainage channel 312, and then can control the angle of inclination of turning cylinder 1.In addition, more fluid kinetic energy can be carried in order to make the biasing drive fluid, the position near first seal snap ring 71 can be as best one can via 11 be opened in.
Referring to figs. 1 to Fig. 3 and Fig. 5 to Fig. 7, according to embodiments of the invention, tumbler comprises rotor 32.Along the flow direction of biasing drive fluid, rotor 32 is arranged on the downstream position of stator 31, drives groove 312 and is arranged on the end face of rotor 32.Rotor 32 is connected on the inwall of outer sleeve 2, and can rotate around the axis of outer sleeve 2.Such as but not limited to, the fit structure of sliding-rail sliding can be set between the inwall of the lateral wall of rotor 32 and outer sleeve 2.According to a preferred embodiment of the invention, rotor 32 is connected to the inwall of outer sleeve 2 by the 3rd bearing 9.In addition, offer the rotor through hole 321 corresponding with stator through hole 311 positions in the centre of rotor 32, pass to allow turning cylinder 1.
In more detail, according to embodiments of the invention, tumbler also comprises geared sleeve 33.As shown in Figure 3, geared sleeve 33 is set on the outer wall of turning cylinder 1.And geared sleeve 33 is sealed in the rotor through hole 321.According to embodiments of the invention, as shown in Figure 5, on the hole wall of rotor through hole 321 and be respectively arranged with on the outer wall of geared sleeve 33 can the intermeshing first tooth portion 3211 and the second tooth portion 331.Preferably, the first tooth portion 3211 is interior engaging tooth, and the second tooth portion 331 is the external toothing tooth.
Further, according to embodiments of the invention, rotor through hole 321 is the eccentric orfice with respect to the eccentric axis setting of outer sleeve 2.And the cross sectional area of rotor through hole 321 is greater than the cross sectional area of geared sleeve 33, and the number of teeth of the first tooth portion 3211 is more than the number of teeth of the second tooth portion 331.According to above-mentioned, by the meshing relation between the first tooth portion 3211 and the second tooth portion 331, when rotor 32 rotates, can move by driven gear cover 33 hole walls along rotor through hole 321, and the movement of geared sleeve 33 can drive turning cylinder 1 and moves.Further, by the cross sectional area feature of eccentric nature, rotor through hole 321 and the geared sleeve 33 of rotor through hole 321 and the number of teeth feature of the first tooth portion 3211 and the second tooth portion 331, the off-centre that can realize geared sleeve 33 moves, and then can realize that the off-centre of turning cylinder 1 moves.Show respectively among Fig. 1 and Fig. 6 that turning cylinder 1 is in the vertical situation of creeping into state and being in the maximum bias state, Fig. 5 shows the sectional view after the A-A line in Fig. 1 is cut open, and Fig. 7 shows the sectional view after the B-B line in Fig. 6 is cut open.Can see that from the comparison of Fig. 1 and Fig. 6, Fig. 5 and Fig. 7 the off-centre by geared sleeve 33 moves the off-centre that drives turning cylinder 1 and moves, and can realize the deflecting function of drilling tool.
With reference to figure 1 and Fig. 2, according to embodiments of the invention, offer pressure release runner 323 on the rotor 32.The entrance of pressure release runner 323 with drive groove 322 and be connected, outlet is arranged on the lateral wall that the inwall with outer sleeve 2 of rotor 32 adjoins mutually.In addition, on the sidewall of outer sleeve 2, offer the by-pass prot 21 corresponding with the position of the outlet of pressure release passage 323.Like this, pressure release passage 323 can intermittently be connected via the outside of by-pass prot 21 with outer sleeve 2, makes the biasing drive fluid to flow to annular space from driving groove 322.The biasing drive fluid that enters in the annular space can form pulsing jet, is conducive to improve the upward velocity of annular fluid, and the large rock-carrying ability of the body that backflows on strengthening.In addition, pressure release runner 323 can be provided with many, to adapt to the pressure release requirement of the drive fluid of setovering.Wherein, the entrance of every pressure release runner 323 is connected with different driving groove 322 respectively, on the lateral wall that the outlet of each pressure release runner 323 can be adjoined mutually with the default inwall with outer sleeve 2 that is distributed in rotor 32.Like this, can shorten the cycle that pressure release runner 323 is connected with the outside of outer sleeve 2.
With reference to figure 8, according to embodiments of the invention, the biasing Control Component comprises guide portion 5.This guide portion 5 is arranged in the tube chamber of turning cylinder 1, flows to via 11 in order to the guided drilling fluid.Particularly, guide portion 5 is concave shaped cavity, and the opening of this concave shaped cavity is towards the upstream side of via 11, and this concave shaped cavity is connected with via 11.According to one embodiment of present invention, concave shaped cavity can be realized by following mode: a part of wall of concave shaped cavity is the inwall of turning cylinder 1, and another part wall of concave shaped cavity can form and directly be connected on the inwall of turning cylinder 1 in addition.Wherein, the wall structure of Xing Chenging is connected the downstream position of via 11 in addition, so that the entrance of via 11 is arranged in concave shaped cavity.According to another embodiment of the invention, concave shaped cavity can be realized by following mode: via 11 is arranged to axis with respect to the tube wall inclination of turning cylinder 1, and the entrance of via 11 tilts towards upstream side.Like this, concave shaped cavity becomes the part of via 11, therefore can realize that concave shaped cavity is connected with via 11.By concave shaped cavity is set, can make a part of drilling fluid be collected at via 11 places, so that the control drilling fluid flows to the outside of turning cylinder 1 from the inside of turning cylinder 1.
Continuation is with reference to figure 8, and according to embodiments of the invention, the biasing Control Component also comprises pressure opening and closing valve 6.Pressure opening and closing valve 6 is arranged on via 11 places, and the aperture of pressure opening and closing valve 6 can change along with the size of the pressure of the drilling fluid in the turning cylinder 1.That is, when the pressure reduction of the tube wall both sides of turning cylinder 1 reached the opening pressure of pressure opening and closing valve 6, the pressure of the drilling fluid in the turning cylinder 1 was more big, and the aperture of pressure opening and closing valve 6 is more big.Therefore, by the pressure of control drilling fluid just can controlled pressure switch valve 6 aperture.Further, because the aperture of pressure opening and closing valve 6 is directly corresponding with the driving force of biasing drive fluid, therefore by the aperture of controlled pressure switch valve 6, can control the angle of inclination of turning cylinder 1.That is to say, by the pressure of control drilling fluid, can finally realize controlling the angle of inclination of turning cylinder 1.In addition, according to a preferred embodiment of the invention, pressure opening and closing valve 6 can be arranged to the pilot operated valve device by initial tension of spring application valve body aperture.
According to embodiments of the invention, the biasing Control Component can also comprise position sensor.This position sensor can be arranged on the drill bit place of drilling tool, in order to detect and to send the signal at the angle of inclination of turning cylinder 1.The biasing Control Component can also comprise pressure-control valve, along the flow direction of drilling fluid, and on the turning cylinder 1 of the upstream position of the outer sleeve 2 that this pressure-control valve can be arranged on, thus the size of the pressure of control drilling tool fluid.The biasing Control Component can also comprise control module, and this control module is in response to the signal of position sensor, the aperture of controlled pressure control valve.That is to say that position sensor, control module and pressure-control valve form signal stream, in order to more accurately to realize the deflecting performance of drilling tool.In addition, when the parameter of pressure-control valve was set, mode that can be by correction factor is set was incorporated into the control action of pressure opening and closing valve 6 in the above-mentioned signal stream.
On the other hand, the present invention also provides a kind of drilling tool, and above-mentioned rotary steering device is installed on this drilling tool.In addition, this drilling tool can also dispose accurately measuring well oblique angle, the isoparametric measurement while drilling device in azimuth (MWD).This measurement while drilling device and above-mentioned rotary steering device are used, and can further improve the deflecting performance of drilling tool.
Below describe preferred embodiment of the present invention by reference to the accompanying drawings in detail; but; the present invention is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up by any suitable manner.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out any combination between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. the rotary steering device of a drilling tool, this rotary steering device comprises the turning cylinder (1) of described drilling tool, and described turning cylinder (1) is the tube-like piece of flexible hollow, and under the running status of described drilling tool, flowing in the described turning cylinder (1) has drilling fluid; Described rotary steering device also comprises the outer sleeve (2) that the outer wall of the outside that is centered around described turning cylinder (1) and two ends and described turning cylinder (1) is tightly connected, and is arranged in the described outer sleeve (2) to apply the biasing driven unit (3) of bias force to described turning cylinder (1); It is characterized in that described rotary steering device also comprises the biasing drive fluid that is used for driving described biasing driven unit (3) that is formed by described drilling fluid, and for the biasing Control Component that described biasing drive fluid is controlled.
2. the rotary steering device of drilling tool according to claim 1, it is characterized in that, being positioned on the inner tube wall of described outer sleeve (2) of described turning cylinder (1) offers via (11), flows to described biasing driven unit (3) and forms described biasing drive fluid from described turning cylinder (1) inside to allow described drilling fluid; And
Along the flow direction of described biasing drive fluid, described biasing driven unit (3) is arranged on the downstream position of described via (11).
3. the rotary steering device of drilling tool according to claim 2, it is characterized in that, along described biasing drive fluid from the upstream to the direction in downstream, described biasing driven unit (3) comprising: fixture offers the drainage channel (312) of top to the bottom that connects described fixture on this fixture; And tumbler, offer a plurality of driving grooves (322) on this tumbler;
Wherein, the opening of described driving groove (322) is towards the outlet of described drainage channel (312), and can promote the cell wall of described driving groove (322) from the described biasing drive fluid that described drainage channel (312) flows out, setover so that described tumbler drives described turning cylinder (2).
4. the rotary steering device of drilling tool according to claim 3 is characterized in that, described fixture comprises:
Stator (31), this stator (31) is fixedly connected on the inwall of described outer sleeve (2), and the centre of described stator (31) offers the stator through hole (311) that extends and allow described turning cylinder (1) to pass along the axial direction of described outer sleeve (2);
Locating ring (4), this locating ring (4) is arranged on the top of described stator (31), and the outer peripheral edges of described locating ring (4) are sealedly connected on the inwall of described outer sleeve (2), offer groove along circumferential direction on the inner peripheral of described locating ring (4), the groove depth direction of this groove is extended along the radial direction of described locating ring (4); And
Sealing plate (41), sealing baffle plate (41) covers the top of described stator through hole (311), and, the outer peripheral edges of described sealing plate (41) embed in the groove of inner peripheral of described locating ring (4), and the outer wall of the inner peripheral of described sealing plate (41) and described turning cylinder (1) is tightly connected;
Wherein, described drainage channel (312) connects described locating ring (4) and described stator (31), and arranges at intervals between the outer peripheral edges of the bottom land of the groove of the inner peripheral of described locating ring (4) and described sealing plate (41).
5. the rotary steering device of drilling tool according to claim 4 is characterized in that, described tumbler comprises:
Rotor (32), this rotor (32) is connected on the inwall of described outer sleeve (2) in the mode that can rotate around the axis of described outer sleeve (2), and the centre of described rotor (32) offers the rotor through hole (321) corresponding with described stator through hole (311) position, and this rotor through hole (321) is with respect to the eccentric axis setting of described outer sleeve (2); Wherein, described driving groove (312) is arranged on the end face of described rotor (32); And
Geared sleeve (33), this geared sleeve (33) are set on the outer wall of described turning cylinder (1) and are sealed in the described rotor through hole (321);
Wherein, the cross sectional area of described rotor through hole (321) is greater than the cross sectional area of described geared sleeve (33), being respectively arranged with on the hole wall of described rotor through hole (321) and on the outer wall of described geared sleeve (33) can the intermeshing first tooth portion (3211) and the second tooth portion (331), and the number of teeth of the described first tooth portion (3211) is more than the number of teeth of the described second tooth portion (331).
6. the rotary steering device of drilling tool according to claim 5, it is characterized in that, offer pressure release runner (323) on the described rotor (32), the entrance of described pressure release runner (323) is connected with described driving groove (322), and the outlet of described pressure release runner (323) is arranged on the lateral wall that the inwall with described outer sleeve (2) of described rotor (32) adjoins mutually; And
Offer the by-pass prot (21) corresponding with the position of the outlet of described pressure release passage (323) on the sidewall of described outer sleeve (2), described pressure release passage (323) intermittently is connected via the outside of described by-pass prot (21) with described outer sleeve (2).
7. according to the rotary steering device of any described drilling tool among the claim 2-6, it is characterized in that, described biasing Control Component comprises: guide portion (5), this guide portion (5) is arranged in the tube chamber of described turning cylinder (1), flows to described via (11) to guide described drilling fluid; And pressure opening and closing valve (6), this pressure opening and closing valve (6) is arranged on described via (11) and locates, and the aperture of described pressure opening and closing valve (6) can change along with the size of the pressure of the drilling fluid in the described turning cylinder (1).
8. the rotary steering device of drilling tool according to claim 7, it is characterized in that, described biasing Control Component also comprises: position sensor, this position sensor are arranged on the drill bit place of described drilling tool, in order to detect and to send the signal at the angle of inclination of described turning cylinder (1); Pressure-control valve, this pressure-control valve are arranged on the described turning cylinder (1) of the upstream position of the described outer sleeve (2) of the flow direction of described drilling fluid, in order to the size of the pressure of controlling described drilling fluid; And control module, this control module is controlled the aperture of described pressure-control valve in response to the signal of described position sensor.
9. the rotary steering device of drilling tool according to claim 7 is characterized in that, described guide portion (5) is concave shaped cavity, and this concave shaped cavity is connected with described via (11), and the opening of described concave shaped cavity is towards the upstream side of described via (11).
10. a drilling tool is characterized in that, any described rotary steering device among the claim 1-9 is installed on the described drilling tool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310313874.8A CN103334697B (en) | 2013-07-24 | 2013-07-24 | Rotary guide device of drilling tool and drilling tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310313874.8A CN103334697B (en) | 2013-07-24 | 2013-07-24 | Rotary guide device of drilling tool and drilling tool |
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| CN103334697A true CN103334697A (en) | 2013-10-02 |
| CN103334697B CN103334697B (en) | 2014-07-23 |
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| CN201310313874.8A Expired - Fee Related CN103334697B (en) | 2013-07-24 | 2013-07-24 | Rotary guide device of drilling tool and drilling tool |
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| CN105625968A (en) * | 2014-11-06 | 2016-06-01 | 通用电气公司 | Guiding system and guiding method |
| CN106761461A (en) * | 2017-01-17 | 2017-05-31 | 成都聚智工业设计有限公司 | Oil well prospecting bit structure |
| CN107386998A (en) * | 2017-08-14 | 2017-11-24 | 中国海洋石油总公司 | A kind of adjustable-angle formula whipstock is oriented to taper joint |
| CN110410008A (en) * | 2019-07-22 | 2019-11-05 | 西南石油大学 | A kind of static state directional type hydraulic rotating steering tool |
| CN112360350A (en) * | 2020-12-10 | 2021-02-12 | 西南石油大学 | Mechanical rotary guiding drilling tool |
| CN112834363A (en) * | 2021-02-25 | 2021-05-25 | 中国科学院地质与地球物理研究所 | Hydraulic system and test equipment |
| CN114016913A (en) * | 2021-11-01 | 2022-02-08 | 西安石油大学 | Directional guide nipple offset adjusting device structure of rotary guide drilling tool |
| CN114109256A (en) * | 2020-09-01 | 2022-03-01 | 中国石油化工股份有限公司 | Well drilling directional device |
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| CN112360350A (en) * | 2020-12-10 | 2021-02-12 | 西南石油大学 | Mechanical rotary guiding drilling tool |
| CN112360350B (en) * | 2020-12-10 | 2022-01-04 | 西南石油大学 | Mechanical rotary guiding drilling tool |
| CN112834363A (en) * | 2021-02-25 | 2021-05-25 | 中国科学院地质与地球物理研究所 | Hydraulic system and test equipment |
| CN114016913A (en) * | 2021-11-01 | 2022-02-08 | 西安石油大学 | Directional guide nipple offset adjusting device structure of rotary guide drilling tool |
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