CN103015892B - Tapered stabilizer and system thereof - Google Patents
Tapered stabilizer and system thereof Download PDFInfo
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- CN103015892B CN103015892B CN201210583186.9A CN201210583186A CN103015892B CN 103015892 B CN103015892 B CN 103015892B CN 201210583186 A CN201210583186 A CN 201210583186A CN 103015892 B CN103015892 B CN 103015892B
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Abstract
The invention provides a kind of tapered stabilizer, comprise housing, upper mandrel and lower mandrel, the inside of upper mandrel is formed with upper high-pressure slurry cavity along the axis direction of housing, the inside of lower mandrel is formed with lower high-pressure slurry cavity along the axis direction of housing, also comprise mud pressure variations device, mud pressure variations device is made up of mushroom head assembly and centre bore, and centre bore is arranged on the upper end of mandrel, and the upper end diameter of centre bore is greater than lower end diameter, centre bore is communicated with upper high-pressure slurry cavity; Mushroom head assembly is arranged on the top of centre bore and is fixed on the inwall of housing; When tapered stabilizer is in running order, mud is maximum through the area of passage of mushroom head assembly and central hole, and significantly reduce the pressure descending tapered stabilizer to bear in working order, tapered stabilizer is safe and reliable; The present invention also provides a kind of tapered stabilizer system, and can significantly reduce the pressure descending tapered stabilizer to bear in working order, tapered stabilizer is safe and reliable.
Description
Technical field
The present invention relates to oil, geological drilling equipment technical field, particularly relate to a kind of tapered stabilizer and system thereof.
Background technology
As everyone knows, when oil exploitation or geological prospecting, often need to carry out drilling well with drill bit to underground.Due to when some oil exploitations or geological prospecting, its drilling depth can reach a few km.In drilling process, in order to ensure the quality of drilling well, ensureing the safety of drill bit and drilling rod simultaneously, often needing the hole angle of the well of drilling well to control in certain scope, namely ensure that drill bit bores by under desired guiding trajectory.
At present, people, in order to ensure the hole angle of well, often install tapered stabilizer at the top of drill bit, utilize tapered stabilizer and drilling well inwall to fit, thus ensure that drill bit bores by under desired guiding trajectory direction.
Concrete, as Chinese patent literature CN2854043Y discloses a kind of drilling remote control tapered stabilizer, it is provided with upper spindle and lower spindle in housing, and form a through high-pressure slurry cavity in the axial direction in the inside of upper spindle and lower spindle, it is socketed with dummy piston and silently on the lower end outer wall of lower spindle, and dummy piston and silently between form a low pressure mud chamber, simultaneously on the housing being positioned at low pressure mud chamber place, be formed with a through hole; When mud enters into high-pressure slurry cavity through drilling rod, because area of passage reduces, thus control upper spindle and lower spindle move down in housing, utilize the open and close of slush pump simultaneously, the cam body be equipped with and cam pin, upper spindle and lower spindle is made to rest on three different operating positions, make the radial piston that drilling remote control tapered stabilizer is arranged be positioned at three different operating positions simultaneously, thus realize the reducing of drilling remote control tapered stabilizer, finally realize the control to hole angle.
But due to when drilling well, this drilling remote control tapered stabilizer is positioned at the dark underground of a few km, which kind of operating position the radial piston therefore how determining on tapered stabilizer is in just becomes technological difficulties.For this reason, in Chinese patent literature CN2854043Y, being also provided with mud pressure variations device, for changing the pressure of mud, thus judging the duty residing for tapered stabilizer; Concrete employing arranges orifice plate assembly and mushroom head assembly at the below place of lower spindle, it utilizes upper spindle and lower spindle when moving down, the spacing of orifice plate assembly and mushroom head assembly changes, make the change of the area of passage of mud between orifice plate assembly and mushroom head assembly, thus change the pressure of mud, utilize the change of mud pressure to achieve to judge the operating position of upper spindle and lower spindle, finally achieve and the operating position of radial piston is judged, and then achieve remote-control diameter-variable.
But when adopting above-mentioned mud pressure variations device, when tapered stabilizer is in drilling well duty, the centre bore in orifice plate assembly and the distance between mushroom head assembly minimum, mud pressure is relatively the highest; Therefore tapered stabilizer can be made to be in high pressure conditions, and because tapered stabilizer needs to be in drilling well duty for a long time, therefore tapered stabilizer is easily made to damage, even damage, thus make ground handling operator to be monitored by the pressure meter of slush pump and to record the mud pressure in slush pump, accurately cannot learn the duty of tapered stabilizer, and then drilling well work is impacted.
Summary of the invention
The object of the present invention is to provide a kind of tapered stabilizer and system thereof, it efficiently avoids and descend tapered stabilizer to bear too high pressure in working order.
A kind of tapered stabilizer provided by the invention, comprise housing, upper mandrel and lower mandrel, the inside of described upper mandrel is formed with upper high-pressure slurry cavity along the axis direction of described housing, the inside of described lower mandrel is formed with lower high-pressure slurry cavity along the axis direction of described housing, the lower end of described upper mandrel and the upper end of described lower mandrel are connected and fixed, and described upper high-pressure slurry cavity is communicated with described lower high-pressure slurry cavity;
Also comprise mud pressure variations device, described mud pressure variations device is made up of mushroom head assembly and centre bore, described centre bore is arranged on the top of described upper mandrel, and the upper end diameter of described centre bore is greater than lower end diameter, and described centre bore is communicated with described upper high-pressure slurry cavity; Described mushroom head assembly is arranged on the top of described centre bore and is fixed on the inwall of described housing.
Optionally, the outer wall of described housing is evenly equipped with at least three aerofoils, and described aerofoil extends twist along the axis direction of described housing, each described aerofoil is evenly equipped with at least four piston putting holes along on its spiral extension direction, and the quantity of the described piston putting hole that each described aerofoil is arranged is all identical, is placed with radial piston in described piston putting hole;
Axis direction along described shell on the outer wall of described lower mandrel is socketed with at least four clinohedrals successively, and the quantity of described clinohedral is equal with the quantity of the described radial piston that each described aerofoil is arranged;
The outer wall of described clinohedral is evenly equipped with at least three inclined plane parts, and the quantity of the described inclined plane part that each described clinohedral is arranged is equal with the quantity of described aerofoil;
Described radial piston and described inclined plane part one_to_one corresponding, and the bottom of described radial piston is resisted against on described inclined plane part.
Optionally, the quantity of described aerofoil is three, and the quantity of the described inclined plane part that each described inclined plane part is arranged is three.
Optionally, each described aerofoil is evenly equipped with five described piston putting holes, the quantity of described clinohedral is five.
Optionally, described housing comprises upper body, central enclosure and lower case, the bottom of described upper body and the top of described central enclosure affixed, the bottom of described central enclosure and the top of described lower case affixed.
Optionally, the bottom of described upper body is threaded with the top of described central enclosure, and the bottom of described central enclosure and the top of described lower case are threaded.
Optionally, described upper mandrel and described mushroom head assembly are placed in described upper body, and described aerofoil is arranged on the outer wall of described central enclosure.
Optionally, described inclined plane part is provided with the T-slot for being connected with the bottom of described radial piston or dovetail groove.
A kind of tapered stabilizer system that the present invention also provides, comprises any one in computer and above-mentioned tapered stabilizer;
Described mushroom head assembly is provided with electronic pressure transmitter, and described electronic pressure transmitter is connected with described computer by sender unit.
Optionally, described sender unit is impulse sender.
Compared with prior art, tapered stabilizer provided by the invention, it passes through the mud pressure variations device arranged at the top place of upper mandrel, utilize slush pump to start and stop driving upper mandrel and lower mandrel to be subjected to displacement downwards, thus change the area of passage of mud through mushroom head assembly and central hole, and then change mud pressure, achieve and the state of tapered stabilizer is judged, and when tapered stabilizer is in running order, mud is maximum through the area of passage of mushroom head assembly and central hole, thus significantly reduce the pressure descending tapered stabilizer to bear in working order, ensure that the safe and reliable of tapered stabilizer.
In further technical scheme, by at least three aerofoils uniform on the outer wall of housing, and at least four radial pistons are set on each aerofoil, thus effectively improve the stability of tapered stabilizer when controlling well track, guarantee that hole angle controls within the specific limits.
In further technical scheme, housing adopts split-type structural, is made up of upper body, central enclosure and lower case, thus is convenient to processing, is conducive to the machining accuracy ensureing housing, is convenient to installing component in housing simultaneously.
In further technical scheme, by arranging T-slot and dovetail groove for being connected with the bottom of radial piston on inclined plane part, thus effectively improve the stability that radial piston installs.
Compared with prior art, tapered stabilizer system provided by the invention, it passes through the mud pressure variations device arranged at the top place of upper mandrel, utilize slush pump to start and stop driving upper mandrel and lower mandrel to be subjected to displacement downwards, thus change the area of passage of mud through mushroom head assembly and central hole, and then change mud pressure, achieve and the state of tapered stabilizer is judged, and when tapered stabilizer is in running order, mud is maximum through the area of passage of mushroom head assembly and central hole, thus significantly reduce the pressure descending tapered stabilizer to bear in working order, ensure that the safe and reliable of tapered stabilizer.
Simultaneously, its utilization arranges electronic pressure transmitter on mushroom head assembly, and by sender unit, electronic pressure transmitter is obtained pressure signal and be sent to computer, then by the software on computer, pressure signal is decoded, and then read the minor variations of mud pressure accurately, thus can the overall mud pressure reducing tapered stabilizer inside, thus make the safety of tapered stabilizer higher, also can reduce the power of slush pump simultaneously, reduce energy ezpenditure.
In further technical scheme, sender unit adopts impulse sender, effectively can improve efficiency of transmission and the reliability of pressure signal, reduces the loss of pressure signal in transmitting procedure.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The front view of the tapered stabilizer that Fig. 1 provides for the embodiment of the present invention one;
The internal construction schematic diagram of the tapered stabilizer that Fig. 2 provides for the embodiment of the present invention one;
Fig. 3 is that A-A in Fig. 2 is to sectional view;
The structural representation of the tapered stabilizer convexity wheel body that Fig. 4 provides for the embodiment of the present invention one;
The structural representation of the tapered stabilizer system that Fig. 5 provides for the embodiment of the present invention two.
Accompanying drawing illustrates:
1-housing, 11-upper body, 12-central enclosure, 13-lower case;
The upper mandrel of 2-, the upper high-pressure slurry cavity of 21-, 22-back-moving spring, 23-Access Division, 24-spring base;
Mandrel under 3-, high-pressure slurry cavity under 31-, 32-clinohedral, 321-inclined plane part, 322-T type groove, 33-cam body, 34-cam pin, 35-dummy piston, 36-silently, 37-low pressure mud chamber, 38-through hole, 39-controls chute;
4-mud pressure variations device, 41-mushroom head assembly, 42-centre bore;
5-aerofoil, 51-piston putting hole, 52-radial piston;
6-electronic pressure transmitter; 7-computer.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly; clear, complete description is carried out below by technical scheme of the present invention; based on the detailed description of the invention in the present invention; other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope that the present invention protects.
First, before describing detailed description of the invention, in embodiment provided by the invention, specifying the direction of boring under drill bit, is upper end near the one end on ground, is lower end near one end of drill bit.
Embodiment one:
As depicted in figs. 1 and 2, the tapered stabilizer provided in the present embodiment, comprise housing 1, upper mandrel 2 and lower mandrel 3, the inside of upper mandrel 2 is formed with upper high-pressure slurry cavity 21 along the axis direction of housing 1, the inside of lower mandrel 3 is formed with lower high-pressure slurry cavity 31 along the axis direction of housing 1, the lower end of upper mandrel 2 and the upper end of lower mandrel 3 are connected and fixed, and upper high-pressure slurry cavity 21 is communicated with lower high-pressure slurry cavity 31; Also comprise mud pressure variations device 4, mud pressure variations device 4 is made up of mushroom head assembly 41 and centre bore 42, centre bore 42 is arranged on the top of mandrel 2, and the upper end diameter of centre bore 42 is greater than lower end diameter, and centre bore 42 is communicated with upper high-pressure slurry cavity 21; Mushroom head assembly 41 is arranged on the top of centre bore 42 and is fixed on the inwall of housing 1.
It is by the mud pressure variations device 4 in the setting of the top place of upper mandrel 2, utilize slush pump to start and stop driving upper mandrel 2 and lower mandrel 3 to be subjected to displacement downwards, thus the distance changed between mushroom head assembly 41 and centre bore 42, and then mud is changed through the area of passage of mushroom head assembly 41 with centre bore 42 place, mud pressure is changed, and then achieve the state of tapered stabilizer is judged, and when tapered stabilizer is in running order, mud is maximum with the area of passage at centre bore 42 place through mushroom head assembly 41, thus significantly reduce the pressure descending tapered stabilizer to bear in working order, what ensure that under tapered stabilizer in working order is safe and reliable.
In the present embodiment, it is emphasized that, due to tapered stabilizer in running order time, pressed close to mutually with the inwall of well by the radial piston 52 of setting on it, thus in drilling process, play the effect of hole trajectory control, therefore, position and the quantity of the radial piston 52 it arranged can play deciding factor to the control of well track.For this reason, the outer wall of preferred housing 1 is evenly equipped with at least three aerofoils 5, and aerofoil 5 extends twist along the axis direction of housing 1, each aerofoil 5 is evenly equipped with at least four piston putting holes 51 along on its spiral extension direction, and the quantity of the piston putting hole 51 that each aerofoil 5 is arranged is all identical, is placed with radial piston 52 in piston putting hole 51; Axis direction along shell on the outer wall of lower mandrel 3 is socketed with at least four clinohedrals 32 successively, and the quantity of clinohedral 32 is equal with the quantity of the radial piston 52 that each aerofoil 5 is arranged; The outer wall of clinohedral 32 is evenly equipped with at least three inclined plane parts 321, and the quantity of the inclined plane part 321 that each clinohedral 32 is arranged is equal with the quantity of aerofoil 5; Radial piston 52 and inclined plane part 321 one_to_one corresponding, and the bottom of radial piston 52 is resisted against on inclined plane part 321.
It is by uniform at least three spirality aerofoils 5 on the outer wall of housing 1, and at least four radial pistons 52 are set on each aerofoil 5, multiple radial piston 52 is utilized to press close to from the inwall of diverse location to well, ensure that the outer wall of housing 1 one week all has radial piston 52 fit with the inwall of well everywhere, and ensure that radial piston 52 is mutually corresponding, thus ensure the precision inwall uniform force everywhere of well being improved further to hole trajectory control, ensure drilling quality.
Further, for the ease of understanding, structure and the course of work thereof of the tapered stabilizer provided in the present embodiment is illustrated below further.
As shown in Figures 2 to 4, the outer wall of housing 1 is evenly equipped with at least three aerofoils 5, and aerofoil 5 extends twist along the axis direction of housing 1, each aerofoil 5 is evenly equipped with at least four piston putting holes 51 along on its spiral extension direction, and the quantity of the piston putting hole 51 that each aerofoil 5 is arranged is all identical, is placed with radial piston 52 in piston putting hole 51.
The outer wall of upper mandrel 2 is formed with Access Division 23, the below outer wall of upper mandrel 2 being positioned at Access Division 23 is socketed with spring base 24, spring base 24 and upper mandrel 2 are slidably matched, and the inwall of the outer wall of spring base 24 and housing 1 is affixed, be provided with back-moving spring 22 between the bottom of Access Division 23 and the top of spring base 24, and back-moving spring 22 is socketed on the outer wall of mandrel 2.
The outer wall of lower mandrel 3 is socketed with successively cam body 33, at least four clinohedrals 32, dummy piston 35 and silently 36 from top to bottom.
The outer wall of cam body 33 is formed with the control chute 39 of bending, the inwall of housing 1 is provided with cam pin 34, the end of cam pin 34 stretches to and controls in chute 39 (as shown in Figure 4).
The quantity of clinohedral 32 is equal with the quantity of the radial piston 52 that each aerofoil 5 is arranged, the outer wall of clinohedral 32 is evenly equipped with at least three inclined plane parts 321, and the quantity of the inclined plane part 321 that each clinohedral 32 is arranged is equal with the quantity of aerofoil 5, radial piston 52 and inclined plane part 321 one_to_one corresponding, and the bottom of radial piston 52 is resisted against on inclined plane part 321.
Dummy piston 35 and be silently formed with low pressure mud chamber 37 between 36, housing 1 is provided with through hole 38, and through hole 38 is at dummy piston 35 and silently between 36.
It in use, the lower end of housing 1 is connected with drill bit, when drill bit creeps into downwards, ground slush pump starts, high-pressure slurry is fed through in housing 1 by drilling rod, when high-pressure slurry enters in upper high-pressure slurry cavity 21 and lower high-pressure slurry cavity 31 from the inside of housing 1, because the area of passage of upper high-pressure slurry cavity 21 compared to housing 1 reduces to some extent, therefore mandrel 2 can be made to be subject to downward pressure P1, then high-pressure slurry enters in drill bit via upper high-pressure slurry cavity 21 and lower high-pressure slurry cavity 31, then discharge from the fluid hole drill bit, thus reach cooling drill bit, lubricates drill bit, take away the effect of sandstone and the support borehole wall, after flowing out when mud thus in drill bit, mud can form low pressure mud between tapered stabilizer and the borehole wall, and low pressure mud can enter in low pressure mud chamber 37 by through hole 38, thus the pressure P2 making dummy piston 35 be subject to upwards, when the pressure that upper mandrel 2 is subject to is greater than the elastic force of pressure that dummy piston 35 is subject to and back-moving spring 22, upper mandrel 2 and lower mandrel 3 start to move down.
When upper mandrel 2 and lower mandrel 3 move down by original position, the cam body 33 on lower mandrel 3 also starts to move down thereupon, and the clinohedral 32 on same mandrel 3 at present also starts to move down thereupon, and its concrete motion process is:
When upper mandrel 2 and lower mandrel 3 are positioned at original position (upper limit position), cam pin 34 is positioned at the C1 place (as shown in Figure 4) controlling chute 39, simultaneously, the bottom of radial piston 52 is positioned at the minimum point place of inclined plane part 321, the top of radial piston 52 is positioned at piston putting hole 51, now be convenient to upwards pull out of hole, this duty trip-out duty.
When slush pump first time starts, upper mandrel 2 and lower mandrel 3 start to move down, cam pin 34 is motionless simultaneously, and cam body 33 rotates relative to cam pin 34, cam pin 34 slides into the B1 place (as shown in Figure 4) controlled in chute 39, now cam pin 34 leans with control chute 39, cam body 33 no longer moves down, clinohedral 32 also no longer moves down simultaneously, simultaneously, the bottom of radial piston 52 moves to centre one desired location of inclined plane part 321, the top that radial piston 52 protrudes outwardly to radial piston 52 is concordant with the oral area of piston putting hole 51, namely the top of radial piston 52 is mutually concordant with aerofoil 5.
Subsequently, slush pump first time stops, pressure drop in high-pressure slurry cavity, under the effect of back-moving spring 22, upper mandrel 2 and lower mandrel 3 move up, now, cam pin 34 slides into the C2 place (as shown in Figure 4) controlled in chute 39, and simultaneously, the bottom of radial piston 52 moves to the minimum point place of inclined plane part 321, the top of radial piston 52 is positioned at piston putting hole 51, namely recovers above-mentioned trip-out duty.
When slush pump second time starts, upper mandrel 2 and lower mandrel 3 start to be moved downward to lower position, and cam pin 34 is motionless simultaneously, and cam body 33 rotates relative to cam pin 34, and cam pin 34 first slides into the B controlled in chute 39
2place slides into the A controlled in chute 39 again
2place's (as shown in Figure 4), now cam pin 34 leans with control chute 39, cam body 33 no longer moves down (namely arriving lower position), clinohedral 32 also no longer moves down simultaneously, simultaneously, the bottom of radial piston 52 moves to the peak place of inclined plane part 321, radial piston 52 protrudes outwardly to extreme position, namely the top of radial piston 52 is positioned at the outside of piston putting hole 51, the top of radial piston 52 is higher than aerofoil 5, radial piston 52 is utilized to press close to mutually with the inwall of well, thus in drilling process, play the effect of hole trajectory control, only however termination of pumping just can creep into always, this state is drilling well duty.
Subsequently, slush pump second time stops, pressure drop in high-pressure slurry cavity, under the effect of back-moving spring 22, upper mandrel 2 and lower mandrel 3 move up, the bottom of radial piston 52 moves to the minimum point place of inclined plane part 321 again, and the top of radial piston 52 is positioned at piston putting hole 51, returns to trip-out duty.
Thus pass through startup and the stopping of slush pump, just can control tapered stabilizer, thus make it be in different duties.
Synchronous, the specific works engineering of mushroom head assembly 41 and centre bore 42 is: when upper mandrel 2 and lower mandrel 3 are positioned at original position, distance between centre bore 42 and mushroom head assembly 41 is minimum, now start slush pump, when mud flow to centre bore 42 from mushroom head assembly 41, its area of passage is minimum, so mud pressure is relatively the highest, now can judge that the bottom of radial piston 52 is positioned at the minimum point place of inclined plane part 321, the top of radial piston 52 is positioned at piston putting hole 51, and namely tapered stabilizer is in trip-out duty.
When slush pump first time starts, upper mandrel 2 and lower mandrel 3 start to move down, distance between centre bore 42 and mushroom head assembly 41 becomes large gradually, when now mud flow to centre bore 42 from mushroom head assembly 41, its area of passage becomes large gradually, so mud pressure is reduced to certain value relatively, now can judge that the bottom of radial piston 52 moves to the centre position of inclined plane part 321, the top that radial piston 52 protrudes outwardly to radial piston 52 is concordant with the oral area of piston putting hole 51, and namely the top of radial piston 52 is mutually concordant with aerofoil 5.
When slush pump second time starts, upper mandrel 2 and lower mandrel 3 are moved downward to lower position, distance between centre bore 42 and mushroom head assembly 41 is maximum, when now mud flow to centre bore 42 from mushroom head assembly 41, its area of passage is maximum, so mud pressure is relatively minimum, now can judge that the bottom of radial piston 52 moves to the peak place of inclined plane part 321, radial piston 52 protrudes outwardly to extreme position, namely the top of radial piston 52 is positioned at the outside of piston putting hole 51, the top of radial piston 52 is higher than aerofoil 5, namely tapered stabilizer is in drilling well duty.
In sum, when tapered stabilizer is in running order, mud is maximum with the area of passage at centre bore 42 place through mushroom head assembly 41, thus significantly reduces the pressure descending tapered stabilizer to bear in working order, and what ensure that under tapered stabilizer in working order is safe and reliable.
In the present embodiment, as shown in Figures 2 and 3, preferably, the quantity of aerofoil 5 is three, and the quantity of the inclined plane part 321 that each inclined plane part 321 on the other side is arranged also is three.
In the present embodiment, as shown in Figure 2, preferably, each aerofoil 5 is evenly equipped with five piston putting holes 51, the quantity of clinohedral 32 on the other side is five.
In the present embodiment, owing to needing in housing 1 to place numerous device, and housing 1 is overall is longly also unfavorable for processing, therefore, preferably, housing 1 comprises upper body 11, central enclosure 12 and lower case 13, the bottom of upper body 11 and the top of central enclosure 12 affixed, the bottom of central enclosure 12 and the top of lower case 13 affixed.Because housing 1 adopts split-type structural, be made up of upper body 11, central enclosure 12 and lower case 13, thus be convenient to processing, be conducive to the machining accuracy ensureing housing 1, be convenient to installing component in housing 1 simultaneously, and effectively can reduce cost of production.
Preferred further, the bottom of upper body 11 is threaded with the top of central enclosure 12, and the bottom of central enclosure 12 and the top of lower case 13 are threaded.Thus be more convenient to install, and the overall construction intensity of installing back casing 1 can be ensured.
In the present embodiment, for the ease of the installation of all parts in housing 1 and overall package, therefore go up mandrel 2 and mushroom head assembly 41 can be placed in upper body 11, aerofoil 5 can be arranged on the outer wall of central enclosure 12.
In the present embodiment, more firm in order to what make radial piston 52 lay in clinohedral 32, the inefficacy of tapered stabilizer can not be caused because radial piston 52 departs from from clinohedral 32, for this reason, T-slot 322(for being connected with the bottom of radial piston 52 can be provided with as shown in Figure 3 on inclined plane part 321) or dovetail groove; Utilize T-slot 322 or dovetail groove by the bottom compact siro spinning technology of inclined plane part 321 with radial piston 52, thus prevent radial piston 52 from departing from from inclined plane part 321; Ensure the normal work of tapered stabilizer.
Embodiment two:
Due to tapered stabilizer, when judging its duty, normally observe the change of the manometric number of degrees on slush pump.But because tapered stabilizer carries out operation in the position of a few km of below ground usually, the pressure conduction in tapered stabilizer is to occurring during ground to decay significantly.Such as, mud is when the pressure change of about 2MPa, and its pressure signal is uploading the strong vibration effect of decay and rig floor, and ground handling operator all can be made accurately cannot to read the change of manometric pressure.Therefore in order to directly can observe the change of the pressure meter number of degrees on ground, slush pump is often needed to strengthen the pressure of mud injection, the impact caused thus offset pressure is decayed.So, in tapered stabilizer, mud pressure often exceeds drilling well and normally uses mud pressure a lot of doubly, and then make tapered stabilizer and well system bear very large mud pressure, also can greatly improve the requirement of the structural strength of tapered stabilizer and well system.
For this reason, as shown in Figure 5, the tapered stabilizer system that the present embodiment provides, comprises the tapered stabilizer in computer 7 and above-described embodiment one; Mushroom head assembly 41 is provided with electronic pressure transmitter 6, electronic pressure transmitter 6 is connected with computer 7 by sender unit.
Its utilization arranges electronic pressure transmitter 6 on mushroom head assembly 41, the minor variations of mud pressure can be read accurately, and be quickly transferred in computer 7 by sender unit, and decode by computer 7 data and show, the accuracy of its data is high, and effectively can reduce the mud pressure of tapered stabilizer inside and well system, thus makes the safety of tapered stabilizer and well system higher, also can reduce the power of slush pump simultaneously, reduce energy ezpenditure.
In the present embodiment, preferably, sender unit is impulse sender.Utilize impulse sender effectively can improve the efficiency of transmission of pressure signal, reduce the loss of pressure signal in transmitting procedure, improve accuracy, the reliability of data further.
Last it is noted that above embodiment and embodiment are only in order to illustrate technical scheme of the present invention, be not intended to limit; Although reference aforementioned embodiments and embodiment are to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in aforementioned embodiments or embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention or embodiment technical scheme.
Claims (9)
1. a tapered stabilizer, it is characterized in that, comprise housing, upper mandrel and lower mandrel, the inside of described upper mandrel is formed with upper high-pressure slurry cavity along the axis direction of described housing, the inside of described lower mandrel is formed with lower high-pressure slurry cavity along the axis direction of described housing, the lower end of described upper mandrel and the upper end of described lower mandrel are connected and fixed, and described upper high-pressure slurry cavity is communicated with described lower high-pressure slurry cavity;
Also comprise mud pressure variations device, described mud pressure variations device is made up of mushroom head assembly and centre bore, described centre bore is arranged on the upper end of described upper mandrel, and the upper end diameter of described centre bore is greater than lower end diameter, and described centre bore is communicated with described upper high-pressure slurry cavity; Described mushroom head assembly is arranged on the top of described centre bore and is fixed on the inwall of described housing;
The outer wall of described housing is evenly equipped with at least three aerofoils, and described aerofoil extends twist along the axis direction of described housing, each described aerofoil is evenly equipped with at least four piston putting holes along on its spiral extension direction, and the quantity of the described piston putting hole that each described aerofoil is arranged is all identical, is placed with radial piston in described piston putting hole;
The outer wall of described lower mandrel is socketed with cam body, at least four clinohedrals, dummy piston and silently successively along the axis direction of described housing, and the quantity of described clinohedral is equal with the quantity of the described radial piston that each described aerofoil is arranged;
The outer wall of described clinohedral is evenly equipped with at least three inclined plane parts, and the quantity of the described inclined plane part that each described clinohedral is arranged is equal with the quantity of described aerofoil;
Described radial piston and described inclined plane part one_to_one corresponding, and the bottom of described radial piston is resisted against on described inclined plane part;
Described dummy piston and described silently between be formed with low pressure mud chamber, described housing is provided with through hole, and described through hole described dummy piston and described silently between.
2. tapered stabilizer according to claim 1, is characterized in that, the quantity of described aerofoil is three, and the quantity of the described inclined plane part that each described clinohedral is arranged is three.
3. tapered stabilizer according to claim 1, is characterized in that, each described aerofoil is evenly equipped with five described piston putting holes, and the quantity of described clinohedral is five.
4. the tapered stabilizer according to any one of claims 1 to 3, it is characterized in that, described housing comprises upper body, central enclosure and lower case, the bottom of described upper body and the top of described central enclosure affixed, the bottom of described central enclosure and the top of described lower case affixed.
5. tapered stabilizer according to claim 4, is characterized in that, the bottom of described upper body is threaded with the top of described central enclosure, and the bottom of described central enclosure and the top of described lower case are threaded.
6. tapered stabilizer according to claim 4, is characterized in that, described upper mandrel and described mushroom head assembly are placed in described upper body, and described aerofoil is arranged on the outer wall of described central enclosure.
7. the tapered stabilizer according to any one of claims 1 to 3, is characterized in that, described inclined plane part is provided with the T-slot for being connected with the bottom of described radial piston or dovetail groove.
8. a tapered stabilizer system, is characterized in that, comprises computer and the tapered stabilizer described in any one of the claims 1 to 7;
Described mushroom head assembly is provided with electronic pressure transmitter, and described electronic pressure transmitter is connected with described computer by sender unit.
9. tapered stabilizer system according to claim 8, described sender unit is impulse sender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583186.9A CN103015892B (en) | 2012-12-27 | 2012-12-27 | Tapered stabilizer and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583186.9A CN103015892B (en) | 2012-12-27 | 2012-12-27 | Tapered stabilizer and system thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN103015892A CN103015892A (en) | 2013-04-03 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556983B (en) * | 2013-08-23 | 2016-08-10 | 航天科工惯性技术有限公司 | The working state detecting method of variable gauge stabilizer and system |
| CN103527124B (en) * | 2013-10-12 | 2016-06-29 | 王岳 | Infinite switch bypass valve and well system |
| CN106609660B (en) * | 2015-10-27 | 2018-10-23 | 中石化石油工程技术服务有限公司 | The controllable diameter changeable stabilizer of sawtooth wheel drive |
| CN108952578B (en) * | 2018-07-20 | 2019-10-01 | 西南石油大学 | A kind of drilling remote control variable gauge stabilizer |
| CN110455565B (en) * | 2019-08-13 | 2024-06-21 | 中国石油集团渤海钻探工程有限公司 | Ground performance test system for reducing stabilizer |
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