CN103899250A - Device for improving oil and gas well drilling speed - Google Patents

Abstract

The invention belongs to the field of petroleum engineering, and in particular relates to a device for increasing the drilling speed of oil and gas wells. The device for improving the drilling speed of oil and gas wells includes: mandrel body, spline outer cylinder, spring protection cylinder, spring assembly, plugging joint under spring, piston assembly, booster assembly outer cylinder; it is characterized in that: mandrel body It is threadedly connected with the piston assembly; the spline outer cylinder, the spring protection cylinder, the plugging joint under the spring, and the supercharging assembly external cylinder are connected through threads; the spring assembly is placed in the spring protection cylinder. The working energy of the device of the present invention comes from the vibration of the drill string, and the energy increases with the increase of the well depth, and the working process of the device reduces the harmful effect of the vibration; the device can not only improve the rock-breaking efficiency, but also enhance the rock-carrying effect at the bottom of the well The device has simple structure and stable performance, and the use process will not bring other risks to the drilling operation; the device does not need to change the structure of the drill string, has nothing to do with the type of drill bit used, has a wide range of applications, and is convenient for promotion and application.

Description

A device for increasing the drilling speed of oil and gas wells

technical field

The invention belongs to the field of petroleum engineering, and in particular relates to an underground rock-breaking drilling device in oil and natural gas drilling operations, in particular to a device for increasing the drilling speed of oil and gas wells.

Background technique

The problem of slow drilling speed in deep wells or hard formations has always restricted the further development of oil and gas resources. Petroleum workers have developed a variety of downhole tools or devices to improve drilling efficiency, including downhole power drilling tools, downhole rotary percussion drilling tools, downhole Torsional percussion drilling tools, downhole fluid jet generators, downhole pulse jet launchers, etc. Field application results show that these tools can improve drilling speed under certain conditions. However, the analysis found that although the mechanisms for these tools to increase speed are different, these tools have a common feature, that is, the energy source for the tools to perform their functions comes from the drilling circulation medium, and the mechanism for increasing the speed is relatively simple. Drilling practice shows that as the well depth increases, the pressure loss of the drilling circulation medium increases. In extremely deep wells, there is even a phenomenon that the circulating medium can only satisfy the circulation of carrying rock without other energy. It is conceivable that in this kind of well, the working status of the above-mentioned tools or devices will be greatly affected, and it is very likely that they will not work or even affect the drilling operation. In addition, due to the different underground rock formations, there are differences in the methods used to increase the drilling speed, and it is difficult for the same speed-increasing mechanism to be applied to various formations. Therefore, it is very meaningful to explore new sources of speed-up energy for downhole tools, and to develop downhole speed-up tools that use new energy and cooperate with multiple speed-up mechanisms.

Contents of the invention

In view of the above-mentioned defects in the prior art, the present invention provides a device for increasing the drilling speed of oil and gas wells, which can simultaneously introduce annular fluid to increase the displacement of drilling fluid at the bottom of the well, and introduce energy other than drilling fluid—energy of drill string vibration , Realize the pulse jet modulation, which can not only improve the rock breaking efficiency, but also enhance the rock carrying effect at the bottom of the well, thereby increasing the drilling speed.

To achieve the above object, the present invention adopts the following scheme:

A device for improving the drilling speed of oil and gas wells, including: mandrel body, spline outer cylinder, spring protection cylinder, spring assembly, plugging joint under spring, piston assembly, booster assembly outer cylinder; mandrel body and piston assembly Threaded connection; spline outer cylinder, spring protection cylinder, plugging joint under the spring, and booster assembly outer cylinder are connected through threads; the spring assembly is placed in the spring protection cylinder.

Compared with the prior art, the present invention has the following beneficial effects:

1. The energy of the device comes from the vibration of the drill string, and the energy increases with the increase of the well depth, and the working process of the device reduces the harmful effect of vibration; the work of the device does not affect the circulation of drilling fluid, even if the tool fails , the drilling operation can also continue;

2. The device achieves the purpose of increasing the displacement of drilling fluid at the bottom of the well, introducing annular fluid, introducing energy other than drilling fluid, and realizing the purpose of pulse jet modulation, which can not only improve the rock breaking efficiency, but also enhance the rock carrying effect at the bottom of the well;

3. The device has simple structure and stable performance, and the use process will not bring other risks to drilling operations;

4. The device does not need to change the structure of the drill string, and has nothing to do with the type of drill bit used. It has a wide range of applications and is convenient for promotion and application.

Description of drawings

Fig. 1 is a structural schematic diagram of a device for increasing the drilling speed of oil and gas wells;

Fig. 2 is a structure diagram of a mandrel body;

Fig. 3 is a structural diagram of the supercharging assembly outer cylinder;

Fig. 4 is A-A sectional schematic diagram among Fig. 1;

Fig. 5 is the B-B sectional schematic diagram among Fig. 1;

Fig. 6 is a schematic cross-sectional view of C-C in Fig. 1;

Fig. 7 is a D-D sectional schematic diagram in Fig. 1;

Fig. 8 is the E-E sectional schematic diagram in Fig. 1;

Fig. 9 is a structural diagram of the piston body;

In the figure: 1. Mandrel body, 2. Anti-shock sealing end cover, 3. Spline chamber sealing assembly, 4. Spline outer cylinder, 5. Oil injection hole, 6. Limit ring, 7. Spring protection cylinder, 8. Spring assembly, 9. Spring cavity seal assembly, 10. Annulus fluid inlet check valve, 11. Spring plugging joint, 12. Booster cylinder liner seal, 13. Piston body seal assembly, 14. Piston assembly, 15. Annular fluid outlet one-way valve, 16. Drilling tool inner hole one-way valve, 17. Booster assembly outer cylinder, 18. Booster cylinder liner, 19. Spline lubricating liquid chamber, 20. Spring lubricating liquid chamber, 21, vent hole, 22, annular space fluid inlet overflow compression head, 23, annular space fluid inlet flow channel, 24, annular space drilling fluid storage chamber, 25, annular space fluid outlet flow channel, 26 large-displacement fluid jet pulsation booster modulation chambers.

Detailed ways

As shown in Figure 1, the device for improving the drilling speed of oil and gas wells includes: mandrel body 1, spline outer cylinder 4, spring protection cylinder 7, spring assembly 8, spring plugging joint 11, piston assembly 14, booster Pressure assembly outer cylinder 17; mandrel body 1 is threadedly connected with piston assembly 14; spline outer cylinder 4, spring protection cylinder 7, spring plugging joint 11, booster assembly outer cylinder 17 are threaded; spring assembly 8 are placed in the spring protection tube 7.

As shown in Figure 2, the mandrel body 1 has a round hole along its axis, the round hole is used for the flow of drilling fluid, and the top of the mandrel body 1 has a drill collar buckle for connecting the upper drilling tool assembly ; The outside of the mandrel body 1 from the top to the bottom is as follows: fastening cylindrical surface 101, sliding sealing surface 102, spline body 103, limit thread 104, spring inner support cylindrical surface 105, piston thread 106; sliding sealing surface 102 is Chrome-plated cylindrical surface, the diameter of the sliding sealing surface 102 is smaller than the diameter of the fastening cylindrical surface 101; the diameter of the spline body 103 addendum circle is equal to the outer diameter of the sliding sealing surface 102, and the diameter of the tooth root circle of the spline body 103 is larger than that of the limit thread 104 diameter; the small diameter of the limiting thread 104 is greater than the diameter of the inner support cylinder 105 of the spring; the diameter of the inner support cylinder 105 of the spring is greater than the major diameter of the piston thread 106.

The splined outer cylinder 4 is a cylindrical shell, the upper part of the outer side of the splined outer cylinder 4 is an end cap connected to the external thread, the middle part is a cylindrical surface, and the lower part is a spring protection cylinder connected to the external thread, and the splined outer cylinder 4 cylindrical surface part The outer diameter of the centering cylinder is equal to the outer diameter of the fastening cylindrical surface of the mandrel body 1; the upper part of the inner side of the spline outer cylinder 4 is a centralizing cylinder, and the lower part is an inner spline, and the inner diameter of the centralizing cylinder is slightly larger than the sliding sealing surface of the mandrel body 1 The outer diameter of 102; the inner spline cooperates with the spline body 103 of the mandrel body 1 to form a spline lubricating liquid cavity 19, and the spline outer cylinder 4 can slide up and down relative to the mandrel body 1; the spline outer cylinder 4 An anti-shock sealing end cover 2 is installed on the top, and a spline chamber seal assembly 3 is provided on the inner top of the spline outer cylinder 4, and the seal assembly 3 is used to prevent the lubricating oil in the spline lubricating liquid chamber 19 from flowing into the annular space; The middle part of the outer cylinder 4 has an oil injection hole, which is used to inject lubricating fluid into the spline lubricating fluid chamber 19, and an oil injection hole plug 5 is installed in the oil injection hole to prevent the lubricating fluid from flowing out.

The outer diameter of the anti-shock sealing end cap 2 is equal to the outer diameter of the fastening cylindrical surface 101, and the top end of the anti-shock sealing end cap 2 has a circular hole, the diameter of which is slightly larger than the outer diameter of the sliding sealing surface 102, the circle The hole and the sliding sealing surface form a gap allowed for sealing; the inner side of the side wall of the anti-shock sealing end cap 2 is provided with an end cap thread, and the anti-shock sealing end cap 2 is connected to the end cap of the splined outer cylinder 4 through the end cap thread and the external thread The anti-shock sealing end cap 2 limits the range of the upward stroke of the splined outer cylinder 4, and bears the impact of the top end of the splined outer cylinder 4 and the step surface at the lower end of the fastening cylindrical surface 101. In addition, the anti-shock sealing end cover 2 can press the spline cavity sealing assembly 3 into the spline outer cylinder 4 to prevent the lubricating oil in the spline lubricating liquid cavity 19 from pushing the spline cavity sealing assembly 3 out.

The spring protection tube 7 is a cylindrical shell, and the outer diameter of the spring protection tube 7 is equal to the outer diameter of the fastening cylindrical surface 101; The lower thread; the upper thread of the spring protection cylinder 7 is used to connect the spring protection cylinder of the spline outer cylinder 4 to connect the external thread, and the lower thread is used to connect the spring lower plugging joint 11, and the inner diameter of the spring outer support surface is 2-6 mm larger than the spring diameter The middle part of the spring protection cylinder 7 has a vent hole, and the vent hole is used to discharge the air inside the spline lubricating liquid chamber 19 when the lubricating liquid is injected into the spline lubricating liquid chamber 19, and the vent hole is installed in the vent hole Plug 21, the vent plug 21 is used to prevent the lubricating fluid from flowing out.

Limiting ring 6 is a cylinder with internal thread at the center, and the outer diameter of limiting ring 6 is slightly smaller than the inner diameter of the spring outer support surface of spring protection tube 7, and the outer diameter of limiting ring 6 is greater than the spline base circle of spline outer cylinder 4 ( That is, the diameter of the spline tooth bottom circle), the internal thread of the limit ring 6 is matched with the limit thread 104 of the mandrel body 1, and provides upward force for the limit ring 6 spline outer cylinder 4 during the drilling process, The bottom surface of the limit ring 6 is the upper supporting surface of the spring assembly 8 .

The under-spring plugging joint 11 is a cylindrical shell, the upper part of the outer side is the connecting thread of the spring protection cylinder, the middle part is the cylindrical surface of the joint, the lower part is the connecting thread of the outer cylinder of the booster assembly, and the inner side is the inner cylindrical surface of the joint; The diameter of the cylindrical surface is slightly larger than the outer diameter of the supporting cylindrical surface in the spring of the mandrel body 1, and a sealing groove is arranged on the inner cylindrical surface of the joint, and a spring cavity sealing assembly 9 is arranged in the sealing groove; the diameter of the cylindrical surface of the joint is the same as that of the mandrel The outer diameter of the cylindrical surface of the body 1 is equal, and the middle part of the cylindrical surface of the joint is located in the same plane perpendicular to the axis. Four radial blind holes are evenly distributed along the circumference. The depth of the blind holes is smaller than the wall thickness of this section. The annulus fluid inlet channel 23 communicates with the bottom surface of the plugging joint 11 under the spring, the annular fluid inlet overcurrent compression head 22 limits the annulus fluid inlet check valve 10 in the blind hole, and the overcurrent compression head 22 is a circular orifice plate with a round hole with a diameter of 2-3 mm. The annular fluid inlet check valve 10 allows the annular fluid to enter the annular drilling fluid storage chamber 24 in one direction; the connecting thread of the spring protection cylinder is used to connect the spring protection cylinder 7. The connecting thread of the outer cylinder of the booster assembly is used to connect the outer cylinder 17 of the booster assembly. The cavity formed by the booster cylinder liner 18 , the booster assembly outer cylinder 17 and the piston assembly 14 is a large-displacement fluid jet pulsation booster modulation cavity 26 .

The spring assembly 8 is a return spring, and the spring assembly 8 is a combination of a helical spring and a liquid spring or a combination of a disc spring and a liquid spring. The spring assembly 8 is arranged between the lower plane of the limit ring 6 and the upper plane of the under-spring sealing joint 11, and is used for resetting the whole device.

As shown in Figure 8, the supercharging assembly outer cylinder 17 is a cylindrical shell, and the outer diameter of the cylindrical shell is equal to the outer diameter of the cylindrical surface 101 of the mandrel body 1; the inner side of the supercharging assembly outer cylinder 17 is formed by From top to bottom, they are: the connecting thread 1701 of the plugging joint under the spring, the support surface 1702 of the cylinder liner, the pressure bearing surface 1703 of the cylinder liner, the drilling fluid flow hole 1704 and the connecting buckle 1705 of the drill bit.

The connecting thread 1701 of the plugging joint under the spring is used to connect the plugging joint 11 under the spring; The cylinder larger than the outer diameter of the piston assembly 14 is equal to the inner diameter of the pressure bearing surface 1703 of the liner; The supercharged cylinder liner seal 12 is installed in the groove; the stepped surface between the cylinder liner support surface 1702 and the cylinder liner pressure bearing surface 1703 is used to provide axial support for the supercharged cylinder liner; the inner wall of the supercharged cylinder liner 18 is finely ground for Reduce the frictional resistance with the piston body seal assembly 13; the drill bit connection buckle 1705 is used to connect the drill bit.

As shown in Figure 9, the piston assembly 14 includes: a piston body 141, an annular fluid outlet check valve 15, a piston body seal assembly 13, and a drilling tool inner hole check valve 16; the piston body 141 is a cylindrical shell, The inner top of the piston body 141 has a mandrel body connecting thread 1401, which is used to connect the mandrel body 1; the lower part of the piston body 141 is provided with a one-way valve installation hole 1402, which is used to install the one-way valve in the inner hole of the drilling tool. Valve 16; the drilling tool inner hole check valve 16 is a valve body that only allows drilling fluid to flow to the bottom of the well; the outer diameter of the upper end of the piston body 141 is small, the outer diameter of the middle part is larger, and the outer diameter of the lower part is small; The cylindrical surface 1403 and the large diameter part in the middle are the sealing buttress 1404; the buckle-up cylindrical surface 1403 is used to fasten the thread, and the sealing buttress 1404 is provided with a piston body sealing assembly 13; the small outer diameter part of the lower part of the piston mother body 141 can be a piston The drilling medium above the parent body 141 provides space for the drilling medium to flow down; the piston parent body 141 is evenly distributed in the circumferential direction with the annular fluid outlet flow channel 25 that penetrates up and down. An annular fluid outlet check valve 15 is installed in the outlet check valve installation hole 1405; the annular fluid outlet check valve 15 is used to control the drilling fluid in the annular drilling fluid storage chamber 24 to enter the large displacement fluid jet pulsation in one direction. The modulation cavity 26 is pressed.

The working principle of the above-mentioned device for increasing the drilling speed of oil and gas wells is as follows:

The mandrel body 1, the limit ring 6 and the piston assembly 14 are connected by threads to form a drill string vibration linkage assembly. The drill collar buckle on the top of the mandrel body 1 is used to connect the upper drilling tool; the spline body in the middle is matched with the spline inside the spline outer cylinder 4 to transmit drilling torque, and the limit ring 6 is threadedly connected to the mandrel body 1 limit. On the bit thread, the stroke of the spline is limited, and it acts as the support of the spring assembly 8, and is also used to prevent the static vibration bearing assembly at the bottom of the well from falling off; the lower end of the mandrel body 1 is connected to the piston assembly 14, and the piston body seal assembly 13 is installed In the circumferential groove of the piston assembly 14, it is used to separate the annular drilling fluid storage chamber 24 and the large-displacement fluid jet pulsation pressurization modulation chamber 26; the piston assembly 14 is evenly distributed with a plurality of annular fluid outlet flow channels 25, Annulus fluid outlet check valve 15 is provided at the bottom of annular fluid outlet channel 25, which can make annular fluid enter into large-displacement annular fluid jet pulsation pressurization modulation cavity 26 in one direction; piston assembly 14 bottom is provided with There is a one-way valve 16 in the inner hole of the drilling tool, which is used to limit the drilling fluid provided by the surface machine pump to enter the large-displacement fluid jet pulsation pressurization modulation chamber 26 in one direction, and mix with the annular fluid jet to generate a large-displacement high-pressure pulse ring Empty fluid jet.

Anti-shock sealing end cover 2, spline chamber seal assembly 3, spline outer cylinder 4, oil injection hole plug 5, vent hole plug 21, spring protection cylinder 7, spring lower plug joint 11, spring chamber seal assembly 9. Annulus fluid inlet check valve 10, annulus fluid inlet overflow compression head 24, pressurized cylinder liner 18, pressurized cylinder liner seal 12, and supercharged assembly outer cylinder 17 are connected to form a bottom static bearing vibration assembly. The anti-shock sealing end cover 2 is connected with the spline outer cylinder 4 through threads, and is used to protect the spline cavity seal assembly 3 and withstand the impact with the upper step surface of the mandrel body 1; the spline cavity seal assembly 3 is installed on the spline cavity The sealing groove opened at the upper end of the key outer cylinder 4 is used to separate the annular drilling fluid from the lubricating oil in the spline lubricating fluid chamber 19; the upper part of the spring protection cylinder 7 is connected with the lower end of the spline outer cylinder 4 through threads, and the lower part is connected with the lower end of the spline outer cylinder 4 through threads. Connected with the upper part of the plugging joint 11 under the spring, it is used to protect the spring assembly 8 in the cylinder; the sealing groove opened in the upper part of the inner hole of the plugging joint 11 under the spring is equipped with a spring cavity sealing assembly, which is used to separate the spline lubricating fluid The lubricating fluid in the chamber 19 and the fluid in the annular drilling fluid storage chamber 24; the plugging joint 11 under the spring is axially equipped with a plurality of annular fluid inlet overflow compression heads 22, and the annular fluid inlet overflow compression head 22 The interior is equipped with an annular fluid inlet check valve 10, which is used to control the drilling fluid with cuttings annular fluid in the annulus to enter the annulus drilling fluid storage chamber 24 in one direction; the annular fluid inlet channel 23 is along the axis The direction is evenly distributed between the annulus fluid inlet check valve 10 and the annular drilling fluid storage chamber 24 of the under-spring plugging joint 11; A supercharging cylinder liner 18 is installed inside the supercharging assembly outer cylinder 17, and a supercharging cylinder liner seal 12 is installed between the supercharging assembly outer cylinder 17 and the supercharging cylinder liner 18, which is used to separate the pulsation booster of the large-displacement fluid jet. Pressurize the fluid in the cavity 26 and the borehole annulus; the lower end of the pressurization assembly outer cylinder 17 has a drill buckle for connecting the drill bit.

During the drilling process, the longitudinal vibration of the drill string is caused by the friction between the drill string and the well wall, the beating of the drill bit at the bottom of the well, etc. When the drill string vibrates, the drill string vibration linkage assembly produces relative motion relative to the static vibration bearing assembly at the bottom of the well, and the motion speed presents a periodic change. When it vibrates downward, the relative motion speed accelerates from 0 to a certain speed Then the speed decreases until it returns to 0, and the downward vibration ends; when the upward vibration starts, the relative motion speed accelerates from 0 to a certain speed in the opposite direction, then the speed decreases until it returns to 0, and then starts downward vibration, and so on. When the drill string vibrates downward, the bottom hole assembly drives the drill string vibration linkage assembly to move downward relative to the static vibration bearing assembly at the bottom of the hole. When the speed is high, the annular fluid outlet check valve 15 and the drilling tool inner hole check valve 16 are closed, the liquid pressure in the large-displacement fluid jet pulsation pressurization modulation chamber 26 rises, and a high-pressure positive pulse is formed on the ordinary nozzle installed on the drill bit. Annulus fluid jet; at the same time, the drilling fluid carrying small particle cuttings in the annulus is filtered through the sieve hole of the flow compaction head 22 at the inlet of the annulus fluid, and flows through the one-way valve 10 at the inlet of the annulus fluid, the annulus fluid The inlet channel 23 enters into the annular drilling fluid storage chamber 24, providing preparation for the annular fluid entering the large-displacement fluid jet pulsation pressurization modulation chamber 26 when the drill string vibrates upwards. When the drill string vibrates upwards, the bottom hole assembly drives the drill string vibration linkage assembly to move upward relative to the bottom hole static vibration bearing assembly, the annular fluid outlet check valve 15 and the drilling tool inner hole check valve 16 are opened, and drilling The hollow drilling fluid normally flows to the bottom of the well to play its role. At the same time, the annular fluid inlet check valve 10 is closed, and the annular fluid outlet check valve 15 is opened. The empty fluid outlet channel 25 and the annular fluid outlet check valve 15 enter the large-displacement annular jet pulsation pressurization modulation cavity 26, and form a large-displacement high-pressure positive pulse fluid jet again when the drill string vibrates downward. Repeatedly, the device uses the large-displacement high-pressure positive pulse jet to improve the rock-breaking efficiency at the bottom of the well, enhance the rock-carrying effect at the bottom of the well, and thus increase the drilling speed.

Claims (10)

1. a device that improves oil gas well drilling speed, comprising: shutoff joint, piston assembly, supercharging assembly urceolus under mandrel body, spline urceolus, spring protection cylinder, main assemblage of spring, spring; It is characterized in that: mandrel body is threaded with piston assembly; Under spline urceolus, spring protection cylinder, spring, shutoff joint, supercharging assembly urceolus are threaded connection; Main assemblage of spring is placed in spring protection cylinder.

2. the device of raising oil gas well drilling speed according to claim 1, it is characterized in that, described mandrel body has circular hole along its axis, the top of circle mandrel body is with drill collar button, and mandrel external body is followed successively by bottom by top: the face of cylinder of linking closely, sliding sealing surface, spline body, spacing screw thread, the spring inner support face of cylinder, piston thread; Sliding sealing surface is the chromium plating face of cylinder, and the diameter of sliding sealing surface is less than the diameter on the face of cylinder of linking closely; Spline body tip diameter equates with sliding sealing surface external diameter, and spline body root diameter is greater than spacing Major Diam; Spacing screw thread path is greater than spring inner support face of cylinder diameter; Spring inner support face of cylinder diameter is greater than the large footpath of piston thread.

3. according to the device of the raising oil gas well drilling speed described in claim 1-2, it is characterized in that, described spline urceolus is cylindrical shell, the top in spline urceolus outside is that end cap connects external screw thread, middle part is that the face of cylinder, bottom are that spring protection cylinder connects external screw thread, and the external diameter of spline urceolus face of cylinder part equates with the face of cylinder external diameter that links closely of mandrel body; The top of spline urceolus inner side is that righting cylinder, bottom are internal spline, and the internal diameter of righting cylinder is slightly larger than the external diameter of mandrel body sliding sealing surface; Internal spline matches with the spline body of mandrel body, and forms the lubricated sap cavity of spline; Protecting against shock end cover is installed on spline urceolus top, and the inner side, top of spline urceolus is provided with spline chamber seal assembly; Spline urceolus middle part has oil filler point, and oil filler point plug is installed in oil filler point.

4. according to the device of the raising oil gas well drilling speed described in claim 1-3, it is characterized in that, the external diameter of protecting against shock end cover equates with the external diameter on the face of cylinder of linking closely, the top of protecting against shock end cover has circular hole, the slightly larger in diameter of this circular hole is in the external diameter of sliding sealing surface, and this circular hole and sliding sealing surface form the gap that sealing allows; The inside sidewalls of protecting against shock end cover is provided with end cap screw thread, and protecting against shock end cover is connected external screw thread by end cap screw thread and connects with the end cap of spline urceolus.

5. according to the device of the raising oil gas well drilling speed described in claim 1-4, it is characterized in that, described spring protection cylinder is cylindrical shell, and the external diameter of spring protection cylinder equates with the external diameter on the face of cylinder of linking closely; The top of spring protection cylinder inner side is that upper screw thread, middle part are that spring outer support face, bottom are lower screw thread; The internal diameter of spring outer support face is greater than spring diameter 2-6mm; Spring protection cylinder middle part has steam vent, and steam vent plug is installed in steam vent.

6. according to the device of the raising oil gas well drilling speed described in claim 1-5; it is characterized in that; centered by spacing ring, be with female cylinder; spacing ring external diameter is slightly less than the internal diameter of spring protection cylinder spring outer support face; spacing ring external diameter is greater than spline urceolus spline base diameter of a circle, and the internal thread of spacing ring matches with the spacing screw thread of mandrel body.

7. according to the device of the raising oil gas well drilling speed described in claim 1-6, it is characterized in that, under described spring, shutoff joint is cylindrical shell, the top in outside is that spring protection cylinder connecting thread, middle part are that the joint face of cylinder, bottom are supercharging assembly urceolus connecting thread, and inner side is joint inner cylinder face, the slightly larger in diameter of joint inner cylinder face, in the external diameter on the mandrel body spring inner support face of cylinder, is provided with seal groove on joint inner cylinder face, is provided with spring cavity seal assembly in seal groove, the diameter on the joint face of cylinder and the mandrel body face of cylinder external diameter that links closely equates, be positioned at along the circumferential direction uniform four radial blind holes of same plane perpendicular to axis at middle part, the joint face of cylinder, blind hole depth is less than this section of wall thickness, blind hole is communicated with the bottom surface of shutoff joint under spring by the annular fluid entrance channel of corresponding setting vertically, annular fluid entrance overcurrent hold-down head is limited in annular fluid inlet one-way valve among blind hole, overcurrent hold-down head is the circular orifice with diameter 2-3mm circular hole, annular fluid inlet one-way valve allows the unidirectional annular space drilling fluid storage chamber that enters of annular fluid.

8. according to the device of the raising oil gas well drilling speed described in claim 1-7, it is characterized in that, main assemblage of spring is the combination of helical spring and liquid spring or the combination of disk spring and liquid spring; Main assemblage of spring is arranged under spacing ring lower plane and spring on shutoff joint between plane.

9. according to the device of the raising oil gas well drilling speed described in claim 1-8, it is characterized in that, described supercharging assembly urceolus is cylindrical shell, and the external diameter of cylindrical shell and the mandrel body face of cylinder external diameter that links closely equates; Supercharging assembly urceolus inner side is followed successively by from top to bottom: shutoff joint connecting thread, cylinder sleeve righting face, cylinder sleeve pressure-bearing surface, the mobile hole of drilling fluid and drill bit junction button under spring; Under spring, shutoff joint connecting thread is for shutoff joint under linking springs; In cylinder sleeve righting face, be provided with supercharging cylinder sleeve; Supercharging cylinder sleeve is that external diameter is less than cylinder sleeve righting face internal diameter, and internal diameter is slightly larger than the cylinder of piston assembly external diameter, equates with the internal diameter of cylinder sleeve pressure-bearing surface; The top of cylinder sleeve righting face has seal groove, and supercharging liner packing is installed in seal groove; Supercharging inboard wall of cylinder liner fine grinding.

10. according to the device of the raising oil gas well drilling speed described in claim 1-9, it is characterized in that piston assembly comprises: piston parent, annular fluid outlet one way valve, piston body seal assembly, drilling tool endoporus one way valve; Piston parent is cylindrical shell, and piston parent inner tip is with mandrel body connecting thread; Piston parent bottom is provided with one way valve installing hole, installing drill orate one way valve in one way valve installing hole; Piston parent outer upper ends external diameter is little, middle part external diameter is large, lower outer diameter is little; Little external diameter position, upper end is that upper button column face, major diameter position, middle part are sealing righting face; Sealing righting face is provided with piston body seal assembly; The annular fluid outlet flow of the circumferential uniform up/down perforation of piston parent, the lower end of annular fluid outlet flow is provided with annular fluid outlet one way valve installing hole, in annular fluid outlet one way valve installing hole, annular space fluid issuing one way valve is installed.

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