CN202140021U - Laterality flow-dividing type pneumodynamics automatic vertical drilling tool - Google Patents
Laterality flow-dividing type pneumodynamics automatic vertical drilling tool Download PDFInfo
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- CN202140021U CN202140021U CN 201120222695 CN201120222695U CN202140021U CN 202140021 U CN202140021 U CN 202140021U CN 201120222695 CN201120222695 CN 201120222695 CN 201120222695 U CN201120222695 U CN 201120222695U CN 202140021 U CN202140021 U CN 202140021U
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Abstract
The utility model provides a laterality flow-dividing type pneumodynamics automatic vertical drilling tool, which belongs to the field of oil well or gas well drilling engineering and comprises a core pipe (1), a lower connector (3) connected with the lower end of the core pipe (1) and an eccentric outer cylinder (2) sleeved on the core pipe (1). The eccentric outer cylinder (2) is in a streamline structure, and a steel ball (5) is installed between the core pipe (1) and the eccentric outer cylinder (2). The laterality flow-dividing type pneumodynamics automatic vertical drilling tool is convenient to operate and adopts a gravity sensing well deviation principle to perform automatic sensing and automatic well straightening without adding any operation. Three acting forces act together so as to form a well straightening force large enough, simultaneously, the diameter of jetting can be adjusted by changing a valve, and reacting force generated by jet stream can be adjusted. The laterality flow-dividing type pneumodynamics automatic vertical drilling tool is simple in structure, good in stability and capable of stably bringing performance into play during use by adopting a pure mechanical structure.
Description
Technical field
The utility model belongs to oil gas well drilling engineering field, is specifically related to a kind of shunting aerodynamics automatic vertical drilling tool of laying particular stress on.
Background technology
Gas drilling is a kind of new technology that can improve rate of penetration greatly that development in recent years is got up.Block application of gas drilling technology makes the drilling period of the about 6000m well of well depth shorten to 4～6 months by original 1～2 year to Sinopec in northeast, river.But owing to lack effective gas drilling well hole deviation control system or instrument, gas drilling hole deviation mechanism understanding is imperfectly understood, hole deviation is difficult to control.In the site operation process,, be compelled to change the drilling fluid drilling well into, had a strong impact on the further raising of drilling speed so usually because hole deviation is excessive.
For solving this difficult problem; The expert has done a large amount of research with regard to drill string mechanics, drill bit design, drilling parameter optimization etc. both at home and abroad; Also designed simultaneously multiple vertical drilling tool and vertical drilling system, these instruments maybe will be for the vertical drilling construction have played an important role, and external Baker Hughes company has released the VertiTrak system; Schlumberger company has released the PowerV system, and these systems have brought into play important function in wellbore construction.
In the prior art; Chinese patent CN2431393, CN2532227, CN101025075, CN101358520, CN201068734, CN2895695, CN201236628, CN201129141, CN201288505, CN1519455, CN1676862 and paper " development of mechanical automatic vertical drilling tool ", " theory of automatic vertical drilling tool and technical research ", " design of automatic vertical drilling tool and autocontrol method " described automatic vertical drilling tool; Advantage is separately all arranged; But also there is limitation separately; Above instrument all only is applicable to the drilling fluid drilling well; In the gas drilling process, gas column pressure, pump pressure, the pressure of the drill inside and outside differential pressure are all lower, are difficult to the backup mechanism with this opened by pressure vertical drilling tool.
Wherein, patent CN2532227, CN201236628 disclose a kind of laying particular stress on or decentralized drill collar of centrifugal force well straightening of utilizing, and its defective is: the one, and the centrifugal force well straightening receives the restriction of rotating speed, the pressure of the drill and bottom drill tool very big, influences rate of penetration inevitably; The 2nd, the drop angle power that only relies on the gravity of pendulum force and the decentralized drill collar of drilling tool self to produce is very limited; The 3rd, restoring force is more little more greatly on the contrary for hole deviation.
Patent CN101451425 discloses a kind of shunting automatic vertical drilling tool that is applicable to gas drilling, impacts the reaction force realization well straightening that the borehole wall produces through the shunting gases at high pressure; CN101566044 discloses a kind of aerodynamic automatic vertical drilling tool that utilizes, and utilizes the airflow design that is similar to aircraft wing of eccentric urceolus, makes the upper and lower both sides of instrument form air-flow differential, produces backup power, realizes the automatic well straightening of gas drilling.These two inventions can be used for gas drilling, but all limitation are arranged, and the source of power is single, the restoring force that very difficult generation is bigger.
In foreign patent WO/1996/031679, US 6851489 B2, US 6659201 B2, US 6494272 B1, US 6213226 B1, US 6216802 B1, US 5484029, US 6769499 B2 and SPE document SPE25759, the SPE 21905 disclosed instruments; Complex structure mostly; And have only the disclosed instrument of US 6851489 B2 can be used for gas drilling, other all are only applicable to the drilling fluid drilling well.Wherein, US 6494272 B1 need install special-purpose directional survey instrument, need circulation of drilling fluid to produce the flexible and promotion bit lateral aggressivity borehole wall of pressure drop driving rib, change well track; US 6216802 B1 need measure hole deviation, and camber regulating system more complicated; US 5484029, US 6769499 B2 need install measurement-while-drilling system, need accurately and complicated control system.
The disclosed automatic vertical drilling tool of world patent manual WO/1996/031679, its structure is relatively simple.This invention is made up of an axle that can rotate freely (transmitting the power of well drilling and rock crushing) and inside and outside two eccentric shafts; The axial hole of outside eccentric shaft is eccentric; Laying particular stress on of forming lets heavy one side be positioned at the low limit of well all the time; The axial off-centre of the eccentric shaft of internal layer is bigger, is the axle that drives drill bit in its hole.The internal layer eccentric shaft can make eccentric position controlled by Ground Control, and the direction of outer eccentric shaft is controlled thereupon, and the fulcrum that forms the drill bit top like this is with the control hole deviation.But control method also is quite complicated, and is only applicable to the drilling fluid drilling well; In addition, only depend on the eccentric force well straightening, eccentric force is little.
The automatic vertical drilling technology that SPE 25759 introduces is to push the borehole wall to through the drilling liquid pressure driven plunger, the realization drop angle.Use this cover vertical drilling technology in stratigraphic dip reaches 60 ° stratum, the drilling well hole deviation can be controlled in 1 °, and horizontal movement has only 4m when being drilled into 6700m, and the frictional resistance value is less than 120kN; Its shortcoming is can't be used for gas drilling owing to need drilling liquid pressure to drive.
The technology that SPE 21905 introduces be considered to the march toward first step of multi-functional more automatic well system, it pushes the borehole wall to through the drilling liquid pressure driven plunger, realizes drop angle; And shortcoming that should technology is can't be used for gas drilling owing to need drilling liquid pressure to drive.
In sum, most existing automatic vertical drilling system can't adapt to gas drilling, even the instrument that is applicable to gas drilling is on a small quantity arranged, they also are difficult to produce enough big drop angle power.
The utility model content
The purpose of the utility model is to solve a difficult problem that exists in the above-mentioned prior art; A kind of shunting aerodynamics automatic vertical drilling tool of laying particular stress on is provided; Big drop angle power, applied widely, easy to operate, simple in structure, good stability, long service life can be provided enough, realize the gas automatic vertical drilling.
The utility model is realized through following technical scheme:
A kind of shunting aerodynamics automatic vertical drilling tool of laying particular stress on comprises core barrel 1, lower contact 3 and eccentric urceolus 2;
Said core barrel 1 is tubular structure with lower contact 3, and both centre bores communicate; The upper end of lower contact 3 has recess, and the lower end of core barrel 1 places in the recess on lower contact 3 tops, and with lower contact 3 through being threaded;
Top at said core barrel 1 has shoulder, and eccentric urceolus 2 is enclosed within core barrel 1 outside, and its upper surface is stuck in the shoulder place of core barrel 1, and the upper surface of lower contact 3 is withstood in the lower surface;
The outer contour of the lateral cross section of said eccentric urceolus 2 is made up of semiellipse segmental arc and the smooth connection of semicircle segmental arc; The semi-minor axis of semiellipse segmental arc radius long and the semicircle segmental arc equates; In the axial direction, the length of the semi-minor axis of the semiellipse segmental arc of the outer contour of each lateral cross section is identical, and the length of major semiaxis changes; From the upper end of eccentric urceolus 2 to the middle and lower part; The length of major semiaxis becomes big from little vertically gradually, and to the lower end, the length of major semiaxis is vertically from diminishing greatly gradually from the middle and lower part of eccentric urceolus 2; The outer contour of vertical symmetrical section of said eccentric urceolus 2 is formed by the streamlined line segment on two sections straightway, the left side and the straightway sealing on the right;
The outer wall upper edge axial distribution of said core barrel 1 has one group of core barrel arc groove; Axial distribution has one group of urceolus arc groove in the inwall upper edge of eccentric urceolus 2; Said core barrel arc groove and urceolus arc groove are complementary one by one and constitute one group of cannelure that distributes vertically, and steel ball 5 is housed in said cannelure;
Each urceolus arc groove place at said eccentric urceolus 2 has oil filler point, and steel ball 5 after having adorned, is equipped with sealing screw 6 in all packing cannelure into from said oil filler point with lubrication oil in oil filler point;
Have the guiding gutter 9 of an annular in said core barrel 1 bottom, in guiding gutter 9, have the gas tap hole 7 with the axis normal of core barrel 1, said gas tap hole 7 one ends communicate with the endoporus of core barrel 1, and the other end communicates with guiding gutter 9; Bottom at said eccentric urceolus 2 has spray-hole, and on vertical symmetrical section, said spray-hole is opened on the straightway on the right; Valve 8 is housed in spray-hole; The axis of valve 8 is towards tilting; Guiding gutter 9 communicates with spray-hole.
Said valve 8 is an one way valve; The gases at high pressure that come out from 7 shuntings of gas tap hole get into valve 8 through said guiding gutter 9, spray to the borehole wall from valve 8.
On the upper surface of the shoulder place of said core barrel 1 and eccentric urceolus 2, all have cannelure, two cannelures constitute seal grooves, and joint ring 4 is housed in said seal groove; On the lower surface of the upper surface of said lower contact 3 and eccentric urceolus 2, all have cannelure, two cannelures constitute seal grooves, and joint ring 4 is housed in seal groove; The joint ring 4 at two places all is used to seal the lubricated space between core barrel 1 and the eccentric urceolus 2.
In said guiding gutter 9, have 3 or 4 the gas tap holes 7 that on circumference, are uniformly distributed with.
There is internal thread the upper end of said core barrel 1, is used to connect other drilling tool.
The operating principle of the utility model is: the utility model utilizes the effect of laying particular stress on of eccentric urceolus 2 to respond to hole deviation automatically based on aerodynamics principle, stream solid coupling analysis method; Utilize returning air-flow promotion eccentric flow line style vertical drilling tool on the annular space, produce backup power, utilize the shunting gas methods simultaneously, the reaction force of shunting injection is regulated bit side force, realize automatic well straightening jointly, reach the purpose of vertical drilling construction.Specifically; When hole deviation produced, the eccentric urceolus 2 of this automatic vertical drilling tool was under the effect of gravity, with eccentric urceolus 2 heavier sides; A side of streamlined outer surface just; Deflection well downside, and at this moment the side that valve opening 8 is housed can produce three drop angle power towards the high side of well: first is the action of gravity of eccentric urceolus; Second is the feasible upper and lower both sides formation pressure reduction of going up returning air-flow at instrument at a high speed of airflow design of eccentric urceolus, produces backup power; The 3rd is to pass through the high side of the valve directive borehole wall by the high-speed gas that the gas tap hole is shunted, and instrument is produced reaction force.These three power pass to drill bit simultaneously in the same way, realize the automatic well straightening of gas drilling, reach the purpose of gas drilling automatic vertical drilling.
Compared with prior art, the beneficial effect of the utility model is:
(1) the utility model is easy to operate, adopts gravity sensing hole deviation principle to respond to automatically and automatic well straightening, need not increase any operation; Need not drilling liquid pressure and drive, rely on the shunting and the aerodynamics principle of gas can realize drop angle, therefore be specially adapted to gas drilling;
(2) utilize the utility model that three active force actings in conjunction are arranged simultaneously, can form enough big restoring force, and do not receive the restriction of rotating speed and the pressure of the drill; Can spray diameter through changing valve regulated simultaneously, regulate the reaction force that injection stream produces;
(3) the utility model simple in structure, need not to install any instrument, good stability adopts the Purely mechanical structure, performance is played stably in the use.
Description of drawings
Fig. 1 is the structural representation that the utility model is laid particular stress on shunting aerodynamics automatic vertical drilling tool.
Fig. 2 is the A-A view among Fig. 1.
Fig. 3 is the B-B view among Fig. 1.
Fig. 4 is the C-C view among Fig. 1.
Fig. 5 is installation and gas that the utility model the is laid particular stress on shunting aerodynamics automatic vertical drilling tool route sketch map of flowing through.
Wherein, 1 is core barrel, and 2 is eccentric urceolus, and 3 are lower contact, and 4 is joint ring, and 5 is steel ball, and 6 is sealing screw, and 7 is the gas tap hole, and 8 is valve, and 9 is guiding gutter.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 1, a kind of shunting aerodynamics automatic vertical drilling tool of laying particular stress on comprises core barrel 1, lower contact 3 and eccentric urceolus 2;
Said core barrel 1 is tubular structure with lower contact 3, and both centre bores communicate; The upper end of lower contact 3 has recess, and the lower end of core barrel 1 places in the recess on lower contact 3 tops, and with lower contact 3 through being threaded;
Have shoulder on said core barrel 1 top, eccentric urceolus 2 is enclosed within core barrel 1 outside, and its upper surface is stuck in the shoulder place of core barrel 1, and the upper surface of lower contact 3 is withstood in the lower surface;
The outer contour of the lateral cross section of said eccentric urceolus 2 is made up of semiellipse segmental arc and the smooth connection of semicircle segmental arc; The semi-minor axis of semiellipse segmental arc radius long and the semicircle segmental arc equates that in the axial direction, the length of the semi-minor axis of the semiellipse segmental arc of the outer contour of each lateral cross section is identical; And the length of major semiaxis changes; To the middle and lower part, the length of major semiaxis becomes big from little vertically gradually from the upper end of eccentric urceolus 2, from the middle and lower part of eccentric urceolus 2 to the lower end; From diminishing gradually greatly, the length maximum value of major semiaxis appears at 1/4th places, eccentric urceolus 2 bottoms to the length of major semiaxis vertically; The outer contour of vertical symmetrical section of eccentric urceolus 2 is formed by the streamlined line segment on two sections straightway, the left side and the straightway sealing on the right; The peak of said streamlined line segment is the place, length maximum value place of above-mentioned major semiaxis; The outer contour of said vertical symmetrical section is similar to wing cross-sectional profiles line, can utilize the shaft bottom high velocity air to produce backup to the low limit of well to power with this profile;
The outer wall upper edge axial distribution of said core barrel 1 has one group of core barrel arc groove; Axial distribution has one group of urceolus arc groove in the inwall upper edge of eccentric urceolus 2; Said core barrel arc groove and urceolus arc groove are complementary one by one and constitute one group of cannelure that distributes vertically; Steel ball 5 is housed in said cannelure; Be rolling friction between so eccentric urceolus 2 and the core barrel 1, just can guarantee that eccentric urceolus can go to the well downside with a heavier side under action of gravity, this gravity produces the pulling force on the low limit of deflection to a whole set of drilling tool;
Each urceolus arc groove place at said eccentric urceolus 2 has oil filler point, and steel ball 5 after having adorned, is equipped with sealing screw 6, in said sealing screw 6 is packed oil filler point into from the outside in all packing cannelure into from said oil filler point with lubrication oil in oil filler point;
Have the guiding gutter 9 of an annular in said core barrel 1 bottom, in guiding gutter 9, have the gas tap hole 7 with the axis normal of core barrel 1, said gas tap hole 7 one ends communicate with the endoporus of core barrel 1, and the other end communicates with guiding gutter 9; Bottom at said eccentric urceolus 2 has spray-hole, and on vertical symmetrical section, said spray-hole is opened on the straightway on the right; Valve 8 is housed, valve 8 and spray-hole interference fit in spray-hole; The axis of valve 8 is towards tilting; Guiding gutter 9 communicates with spray-hole.
Said valve 8 is an one way valve; The gases at high pressure that come out from 7 shuntings of gas tap hole get into valve 8 through said guiding gutter 9, spray to the borehole wall from valve 8.
On the upper surface of the shoulder place of said core barrel 1 and eccentric urceolus 2, all have cannelure, two cannelures constitute seal grooves, and joint ring 4 is housed in said seal groove; On the lower surface of the upper surface of said lower contact 3 and eccentric urceolus 2, all have cannelure, two cannelures constitute seal grooves, and joint ring 4 is housed in seal groove; The joint ring 4 at two places all is used to seal the lubricated space between core barrel 1 and the eccentric urceolus 2.
In said guiding gutter 9, have 3 or 4 the gas tap holes 7 that on circumference, are uniformly distributed with; All gas tap hole 7 all with the axis normal of core barrel 1; One end of all gas tap hole 7 all communicates with the endoporus of core barrel 1; The other end all communicates with the annular diversion trench 9 in core barrel 1 outside all the time, and guiding gutter 9 communicates with the spray-hole of eccentric urceolus again all the time, and the gas that shunting is come out in the core barrel 1 sprays to the borehole wall through spray-hole and produces the reaction force towards low limit.
There is internal thread the upper end of said core barrel 1, is used to connect other drilling tool.
The installation step of the automatic vertical drilling tool of the utility model is following: Fig. 1 assembling is pressed in core barrel 1, eccentric urceolus 2, joint ring 4 and lower contact 3 successively; Oil filler point from the eccentric urceolus 2 steel ball 5 of packing into again; For guaranteeing that steel ball is full of the cannelure of 2 of core barrel 1 and eccentric urceolus; Eccentric urceolus 2 is rotated on steel ball 5 limits of packing into, limit, in oil filler point, injects lubrication oil then and sealing screw 6 is installed.The diameter of the required spray-hole of calculation before construction, and select valve 8, valve 8 is installed in the spray-hole of eccentric urceolus 2 interference fit.
When adopting the utility model to carry out the straight well wellbore construction; Appearance profile and wellbore construction according to aerodynamics, eccentric urceolus require to calculate and adjustment gas discharge capacity and air pressure; The preparation BHA; Principle is that this automatic vertical drilling tool is tried one's best near drill bit, and at this automatic vertical drilling tool top stable installation device, does not contact with the borehole wall to guarantee this instrument.
When hole deviation during less than 2 °; Because there are certain frictional force in joint ring 4, steel ball 5 (bearing); This moment, the deflection of eccentric urceolus 2 was uncertain, at random; The backup power that under the returning air-flow effect this instrument is produced on this moment is unstable with the reaction force direction of shunting gas, so this automatic vertical drilling tool can not produce the backup power of a constant side, does not influence normally and creeps into.
When hole deviation during greater than 2 °, when drill string rotates, because the eccentric urceolus 2 of automatic vertical drilling tool is laid particular stress on; Under action of gravity, a heavier side can turn to the downside of well, and this moment is in the hole deviation plane; The outline line of instrument is the outline line that is similar to the wing cross section, under the effect of high velocity air, can form a low-pressure area at the downside of this instrument; Upside (side of valve 8 promptly is housed) at instrument forms a higher-pressure region; Under the effect of pressure reduction, on instrument, form a backup power to low limit, this power forms the lateral force to the well downside on drill bit; Simultaneously, the gases at high pressure that come out through gas tap hole 7 shuntings of core barrel 1 get into valve 8 through guiding gutter 9, spray to the borehole wall of flash then, produce reaction force and push instrument to well low limit.Drill string bores when moving, and eccentric urceolus 2 keeps on these directions, and backup power, lateral force are pointed to the well downside all the time, realize automatic well straightening with this, reach the purpose of vertical drilling.
What Fig. 2, Fig. 3 and Fig. 4 described is the view in transverse section at this automatic vertical drilling tool diverse location place; Be respectively the view in transverse section A-A, B-B, the C-C that are positioned at eccentric urceolus 2 tops, middle part and bottom; Wherein B-B is the sectional area largest portion of this off-centre urceolus 2; But this cross section is not the middle that is positioned at eccentric urceolus 2, but part on the lower side, so the purpose of design is to simulate wing lateral cross section shape.These three cross sections are in diverse location; But its shape is similar, forms by one section elliptic arc and one section circular arc, and the purpose of this cross sectional shape design is to form certain off-centre; Can produce a comparatively smooth face again, be beneficial to return on the high speed gas and form a stress surface in this side.Be positioned at the C-C section valve 8 axis towards oblique upper to, so design can not only produce reaction force when spraying, and helps gas to take the rock effect.This valve 8 is an one way valve, not only has the effect of regulating the jet size, and can rise, bore down and stop circulation time and prevent that impurity gets into vertical drilling tool in the well.
Fig. 5 describes is installation and gas that the utility model the is laid particular stress on shunting aerodynamics automatic vertical drilling tool route of flowing through, and as can be seen from Figure 5, does not contact with the borehole wall for guaranteeing this instrument, on the top of instrument stabilizer is installed.The lateral force that this instrument forms drill bit is actually by three parts and constitutes: the action of gravity of eccentric urceolus; The pressure reduction that utilizes aerodynamic principle to produce in the instrument both sides; The reaction force that the shunting high-speed gas directive borehole wall produces, specifically, first is because instrument is eccentric, a heavier lateral deviation passes to the lateral force of drill bit to the low limit of well to the well downside; Second portion is the pressure reduction that forms owing to last returning air-flow effect as stated, and the effect of the pressure reduction instrument that makes receives a downward backup power, and passes to the lateral force of drill bit to the well downside; Third part is the reaction force that is sprayed to borehole wall air-flow by valve 8, and instrument and drill bit are produced another lateral force to the well downside.
The utility model is mainly used in the automatic vertical drilling in oil gas well drilling engineering field, is specially adapted to gas drilling.The rate of penetration of gas drilling improves 1～5 times even higher than conventional drilling, because of it has remarkable advantages aspect rate of penetration and obtained developing rapidly improving.According to USDOE's statistics, the oil gas well on U.S. land about 30% all can adopt the gas drilling technology to accomplish.The gas drilling technology has been applied to the sanidal drillng operation in shallow sea in recent years, is used for the oil gas drilling on potential lost-circulation zone (for example reef facies stratum).China carries out the gas drilling test the sixties in 20th century, after this improves constantly gas drilling technical application level through technology transfer and two kinds of approach of independent research, and gas drilling The Application of Technology scope also progressively enlarges.Facts have proved that gas drilling improves the development benefit of low pressure, low permeability reservoirs at the drilling problem that solves long section low pressure broken formation, aspects such as raising drilling progress have original advantage, will obtain wider application.But one of most important difficult problem that present hole deviation problem is a gas drilling need capture often has to change into the drilling fluid drilling well owing to hole deviation is excessive in work progress, the gas drilling hole deviation has had a strong impact on construction speed.And the utility model has been realized the automatic well straightening of gas drilling, reaches the purpose of gas drilling automatic vertical drilling, therefore, the utlity model has wide application prospect.
Technique scheme is a kind of embodiment of the utility model; For those skilled in the art; On the basis that the utility model discloses embodiment and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned specific embodiment of the utility model; Therefore the mode of front description is just preferred, and does not have restrictive meaning.
Claims (5)
1. lay particular stress on shunting aerodynamics automatic vertical drilling tool for one kind, it is characterized in that: the said shunting aerodynamics automatic vertical drilling tool of laying particular stress on comprises core barrel (1), lower contact (3) and eccentric urceolus (2);
Said core barrel (1) and lower contact (3) are tubular structure, and both centre bores communicate; The upper end of lower contact (3) has recess, and the lower end of core barrel (1) places in the recess on lower contact (3) top, and with lower contact (3) through being threaded;
Top at said core barrel (1) has shoulder, and eccentric urceolus (2) is enclosed within core barrel (1) outside, and its upper surface is stuck in the shoulder place of core barrel (1), and the upper surface of lower contact (3) is withstood in the lower surface;
The outer contour of the lateral cross section of said eccentric urceolus (2) is made up of semiellipse segmental arc and the smooth connection of semicircle segmental arc; The semi-minor axis of semiellipse segmental arc radius long and the semicircle segmental arc equates; In the axial direction, the length of the semi-minor axis of the semiellipse segmental arc of the outer contour of each lateral cross section is identical, and the length of major semiaxis changes; From the upper end of eccentric urceolus (2) to the middle and lower part; The length of major semiaxis becomes big from little vertically gradually, and to the lower end, the length of major semiaxis is vertically from diminishing greatly gradually from the middle and lower part of eccentric urceolus (2); The outer contour of vertical symmetrical section of said eccentric urceolus (2) is formed by the streamlined line segment on two sections straightway, the left side and the straightway sealing on the right;
The outer wall upper edge axial distribution of said core barrel (1) has one group of core barrel arc groove; Axial distribution has one group of urceolus arc groove in the inwall upper edge of eccentric urceolus (2); Said core barrel arc groove and urceolus arc groove are complementary one by one and constitute one group of cannelure that distributes vertically, and steel ball (5) is housed in said cannelure;
Each urceolus arc groove place at said eccentric urceolus (2) has oil filler point, and steel ball (5) and lubrication oil after having adorned, are equipped with sealing screw (6) in all packing cannelure into from said oil filler point in oil filler point;
Have the guiding gutter (9) of an annular in said core barrel (1) bottom, in guiding gutter (9), have the gas tap hole (7) with the axis normal of core barrel (1), said gas tap hole (7) one ends communicate with the endoporus of core barrel (1), and the other end communicates with guiding gutter (9); Bottom at said eccentric urceolus (2) has spray-hole, and on vertical symmetrical section, said spray-hole is opened on the straightway on the right; Valve (8) is housed in spray-hole; The axis of valve (8) is towards tilting; Guiding gutter (9) communicates with spray-hole.
2. the shunting aerodynamics automatic vertical drilling tool of laying particular stress on according to claim 1 is characterized in that: said valve (8) is an one way valve; The gases at high pressure that come out from gas tap hole (7) shunting get into valve (8) through said guiding gutter (9), spray to the borehole wall from valve (8).
3. the shunting aerodynamics automatic vertical drilling tool of laying particular stress on according to claim 1; It is characterized in that: on the upper surface of the shoulder place of said core barrel (1) and eccentric urceolus (2), all have cannelure; Two cannelures constitute seal groove, and joint ring (4) is housed in said seal groove; On the lower surface of said lower contact (3) upper surface and eccentric urceolus (2), all have cannelure, two cannelures constitute seal groove, and joint ring (4) is housed in seal groove; The joint ring at two places (4) all is used to seal the lubricated space between core barrel (1) and the eccentric urceolus (2).
4. the shunting aerodynamics automatic vertical drilling tool of laying particular stress on according to claim 1 is characterized in that: in said guiding gutter (9), have 3 or 4 the gas tap holes (7) that on circumference, are uniformly distributed with.
5. the shunting aerodynamics automatic vertical drilling tool of laying particular stress on according to claim 1, it is characterized in that: there is internal thread the upper end of said core barrel (1), is used to connect other drilling tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120222695 CN202140021U (en) | 2011-06-28 | 2011-06-28 | Laterality flow-dividing type pneumodynamics automatic vertical drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120222695 CN202140021U (en) | 2011-06-28 | 2011-06-28 | Laterality flow-dividing type pneumodynamics automatic vertical drilling tool |
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| Publication Number | Publication Date |
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| CN202140021U true CN202140021U (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120222695 Withdrawn - After Issue CN202140021U (en) | 2011-06-28 | 2011-06-28 | Laterality flow-dividing type pneumodynamics automatic vertical drilling tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852459A (en) * | 2011-06-28 | 2013-01-02 | 中国石油化工股份有限公司 | Automatic vertical drilling tool on basis of eccentric divided gas dynamics |
| CN108071342A (en) * | 2018-01-31 | 2018-05-25 | 吉林大学 | Synergistic effect formula drilling tool is laid particular stress in the adjustable shunting of one kind |
-
2011
- 2011-06-28 CN CN 201120222695 patent/CN202140021U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852459A (en) * | 2011-06-28 | 2013-01-02 | 中国石油化工股份有限公司 | Automatic vertical drilling tool on basis of eccentric divided gas dynamics |
| CN102852459B (en) * | 2011-06-28 | 2016-01-13 | 中国石油化工股份有限公司 | A kind of Laterality flow-dividing type pneumodynamics automatic vertical drilling tool |
| CN108071342A (en) * | 2018-01-31 | 2018-05-25 | 吉林大学 | Synergistic effect formula drilling tool is laid particular stress in the adjustable shunting of one kind |
| CN108071342B (en) * | 2018-01-31 | 2023-09-29 | 吉林大学 | Adjustable reposition of redundant personnel unbalance weight synergism formula drilling tool |
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