CN1067092A - Be used for the bottom jet regulator on the drill bit - Google Patents
Be used for the bottom jet regulator on the drill bit Download PDFInfo
- Publication number
- CN1067092A CN1067092A CN 91107203 CN91107203A CN1067092A CN 1067092 A CN1067092 A CN 1067092A CN 91107203 CN91107203 CN 91107203 CN 91107203 A CN91107203 A CN 91107203A CN 1067092 A CN1067092 A CN 1067092A
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- jet
- nozzle
- adjuster
- shower nozzle
- present
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Abstract
The present invention is a kind of bottom jet regulator that is used on the drill bit.It by shower nozzle, cross that filter ruffle, guide valve, bearing ring and shell are formed layer structure and by the stream valve, compress spring, flow divider valve, bearing and turn to shift fork to form the bottom jet regulator of internal construction.The present invention can be used with the limit spray, solves center, shaft bottom bed course and bit balling, can use separately again to replace other all nozzles, also can add an impulse jet nozzle in the entrance, becomes the pulsing jet adjuster.
The present invention can not carry brill, directly adjust bottom jet quantity, saved about 200,000,000 yuan of the expense that makes a trip in 1 year, improve drilling speed more than 0.5～2 times, and simple in structure, cost is low, easy for installation, simple to operate, be the most desirable ejector that is used at present on the various drill bits, be specially adapted in the high pump pressure drilling well, both safety, efficient is higher.
Description
The present invention relates to the oil drilling technology, especially for the bottom jet regulator on the drill bit.
How jet drilling both domestic and external creeps into tricone bit, secondly is that the grinding cutting drill bit creeps into.The a large amount of nozzle of tricone bit is installed near drill bit edge (limit injection), be formed centrally a dead angle in the shaft bottom, during the tricone bit drilling well, 85% of shaft bottom area can not directly wash, most fragments repeat broken as bed course in the shaft bottom, under the high pressure fluid column effect, these bed course pressure holdings are the main causes that causes drilling efficiency low in the shaft bottom.Drill bit is big more, and this contradiction is outstanding more.Under same drilling condition, the drilling speed of one 9 1/2 " tricone bit is than one 8 1/2 " tricone bit will hang down more than 20～90%.External simulated test is pointed out, under the condition of injection, increases hydrodynamic cleaning degree (referring to continue to strengthen ground waterpower capacity of equipment), has only minor effect to overcoming local one-tenth hole effect, and this is the defective that present tricone bit hydrophthalmia is arranged.Because the design feature of tricone bit self, developed a kind of anisobaric flow field, they are on bit nozzle is arranged, nozzle length is identical, big or small mutually also, or reduce quantity or block method such as certain nozzle and creep into, though can improve certain drilling speed like this, brought the concentrated wear of drill bit big, the shaft bottom drilling well is not steady, easily beats inclined shaft eye etc. and covers disease.Therefore the oil gas field of part broken ground, asymmetric scheme that need not above-mentioned layout nozzle.In addition, a small amount of bit central nozzle has also appearred, several years ago both at home and abroad, the center symmetry three fork nozzles of Soviet citizen's invention, main purpose is to solve bit balling, drill but can only be used for the following pump pressure of 12 MPas, if the pump pressure height spearpoint all erosion fall.
In 1988, we have designed a kind of " the shaft bottom washer that is used for rock bit; " (number of patent application is 89212837.2) is though can make the shaft bottom large tracts of land obtain flushing, use the submerged jets attenuation principle, solved cutting edge by the erosion phenomenon, this can only solve the shaft bottom bit balling, its drilling speed improves, but 15～30%, and strainer also easily blocks, and the jet quantity of nozzle can not require change because of drilling technology.Application number is " being used for the cavitation jet nozzle on the drill bit " of 90212418.8, though can drill under ultra-high pressure condition, drilling speed improves more, can not be used on the bit central.Therefore, no matter be that spray or central-injection on the limit at present, all can not adjust bottom jet quantity, the problem of erosion cone shell in the time of all can not solving high pressure drilling by the drilling technology requirement.
Purpose of the present invention is just in order to overcome the defective of aforementioned jet drilling, and designs a kind of bit central that is installed in, and can not pull out of hole and regulate bottom jet quantity, makes the plane, shaft bottom 90% or more obtain good jet erosion, improvement jet bottom-hole flow field.Form the plate current hydraulic structure of a kind of hydraulic pressure equal difference field, reach more perfect jet drilling technology, thereby significantly improve well-digging speed.And simple in structure, easy for installation, price is low, can be used for the bottom jet regulator on the various rock bit.Also can be used in other any drill bit to adjuster part (not comprising shower nozzle) separately.
The objective of the invention is to reach by following measure:
The present invention designed by shower nozzle, cross that filter ruffle, guide valve, bearing plate (ring) and shell are formed layer structure and by choke valve, compress spring, flow divider valve, bearing and turn to shift fork to form the bottom jet regulator of internal construction.Shower nozzle is that sound hole three is worn the uniform 120 ° special nozzle of groove, and when shower nozzle is worn groove width greater than 5mm, can cancel filter ruffle (device), also can increase a pulse (hole) nozzle in the entrance, converts pulsing jet to, becomes the bottom jet impulse regulator.Each parts that adjuster is subjected to erosion all adopt carbide alloy such as GT, TM, yG, G or industrial ceramics, carborundum, casting pressing mold or machine moulding, and all the other members adopt the boronisings of charcoal steel to get final product.This adjuster can be connected in various bit central borings, coats the wear-resisting glue of sealing, can go into the well and drill, and is safe and convenient.
Fig. 1 is end well jet regulator sectional view.
Fig. 2 is for the present invention is installed in demonstration sectional drawing in the rock bit centre bore.
Below in conjunction with accompanying drawing structure of the present invention, operating principle and embodiment are further described.
Shower nozzle 1. used filter ruffle (device) 4. with shell
Screwed connection, 2. 1. shower nozzle also be slidingly matched with choke valve, 6. 2. choke valve withstand flow divider valve upper shoulder 7. by the compression spring, 8. cooperate with turning to shift fork, choke valve 2. again with 8201 bearings 5., 7. interference fits of flow divider valve, turn to shift fork 8. 9. indenting with guide valve, again with bearing plate 10., nut
Screwed connection is formed one and is connected control system.3. locking nut is that jet regulator is fixed on the drill bit.This adjuster can be used with the limit spray, solves center, shaft bottom bed course and bit balling problem, can use separately again to replace other all nozzles.Set up governor motion and can not rise and be drilled in the shaft bottom and regulate water amount at any time, also can increase an impulse jet nozzle, just can convert pulsing jet to, become shaft bottom pulsing jet adjuster, reach the best well-digging of rotary drilling effect in the entrance.It increases substantially drilling speed, saves a large amount of trip times, because drilling period shortens a lot, wellbore quality is good, can prevent or reduce the down-hole accident risks.
Operating principle of the present invention is: when adjuster is used for drilling well, shower nozzle is near the shaft bottom, be make full use of the submerged jets potential core, the shaft bottom rock of directly making a spurt is cut bed course, and it differs from the anisobaric flow field, but concentric equal difference flow field, it is better than the anisobaric flow field greatly to the erosion in shaft bottom, reduces eddy current, in time forms the hydraulic structure of plate current, rapid heat dissipation, direct erosion shaft bottom bed course and fine fisssure gap during each of cooling drill bit, the direct erosion district original 15% becomes the direct erosion district more than 90%.It does not pull out of hole in addition and regulates the specific function of bottom jet size.During normal the well-digging, require effluxvelocity more greatly, can transfer the shower nozzle cross-section of river minimumly.When running into broken ground, shaft bottom complex situations, need back-flow velocity more greatly, can transfer the shower nozzle cross-section of river more greatly.When playing finishing drilling, for keeping the shaft bottom cleaning, require just to adjust back-flow velocity maximumly when not pulling out of hole, can adjust the shower nozzle cross-section of river maximumly.So both reduced the loaded down with trivial details operation that makes a trip, saved drill bit again, also avoided many accident risks simultaneously, improved the drilling technology level greatly, when being present rotary drilling other jet drilling can not compare.
After adjuster is processed into as shown in the figure structure, high speed circulation is crossed the drilling rod center and is entered drill bit slurry hole during well-digging, directly compressing bearing plate (ring) 10., turn to shift fork 7. to head on flow divider valve 8., when work, 6. the compression spring makes choke valve 2. be positioned at the high or short control basic point as cross-section of river variation of step on the flow divider valve 8, to reach best drilling technology.Adjust when needs, stop pump and can change once, its amount is specifically to regulate the size and the class of the cross-section of river by factors such as formation variation, down hole problems.
Through initial estimate, the trip time that does not comprise various special circumstances, the whole nation about two over thousands of bench drill machines, putting the brill expense can save more than 200,000,000 yuan, and a large amount of heavy manual labors have been broken away from for the workman, and it is about more than 0.5 to 2 times significantly to improve drilling speed, also makes the exploration cost cost savings more than 20%.
The present invention has following advantage:
1, the present invention is used for the drill bit well-digging, and jet erosion shaft bottom area reaches more than 90%, can erosion arrive more than 5 times of area greater than rock bit edge peace nozzle.
2, the shaft bottom drill bit does not play (getting) and goes out, and directly distributes jet quantity, has saved in a large number trip time and expense (about 200,000,000 yuan), and has alleviated heavy manual labor.
3, can be used with various nozzles, improve well-digging speed, also can on drill bit, use separately.Promptly satisfy low pump pressure and creep into, be satisfied with creeping into fast of the above super-pressure of 20 MPas again, the drilling technology that the bottom jet of perfect jet drilling requires.
4, owing to be the equal difference flow field, form rational hydraulic structure and can make drilling well steady, reduced the drill bit concentrated wear, improve drilling life of bit.
5, can be used on all rock bit, it is that mozzle cooperates bit port to regulate jet that other cutting and grinding drill bit can change shower nozzle.
6, improve drilling speed more than 0.5～2 times.〉
Claims (6)
1, a kind of bottom jet regulator that is used on the various drill bits, it is characterized in that having designed by shower nozzle 1., cross filter ruffle 4., guide valve 9., bearing plate (ring) 10. reaches shell
Form layer structure and by choke valve 2., the compression spring 6., flow divider valve 8., bearing 5. and turn to shift fork 7. to form the bottom jet regulator of internal construction, and shower nozzle is the special nozzle that blind hole three is worn groove, when the shower nozzle tank wide when big, can cancel filter ruffle (device), also can increase a pulse (hole) nozzle in the entrance, convert pulsing jet to, promptly become the bottom jet impulse regulator.
2,, it is characterized in that blind hole three wears groove and be 120 ° of three special nozzle that is symmetrically distributed according to the said adjuster of claim 1.
3, according to claim 1 or 2 said adjusters, it is characterized in that when shower nozzle is worn groove width greater than 5mm, then can cancel and filter cover (device).
4, by claim 1 or 2 said adjusters, it is characterized in that to increase a pulse (hole) nozzle in the entrance, convert pulsing jet to, promptly become shaft bottom pulsing jet adjuster.
5, by the said adjuster of claim 1, it is characterized in that each parts that adjuster is subjected to erosion all adopt carbide alloy such as GT, TM, yG, G or industrial ceramics, carborundum, casting pressing mold or machine moulding, all the other members adopt boronising charcoal steel to get final product.
6,, it is characterized in that adopting the wear-resisting glue of sealing, and on the drill bit hanger, can use with screwed connection by claim 1 or 5 said adjusters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107203 CN1030851C (en) | 1991-05-17 | 1991-05-17 | Bottom jet regulator used on drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107203 CN1030851C (en) | 1991-05-17 | 1991-05-17 | Bottom jet regulator used on drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1067092A true CN1067092A (en) | 1992-12-16 |
| CN1030851C CN1030851C (en) | 1996-01-31 |
Family
ID=4908559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91107203 Expired - Fee Related CN1030851C (en) | 1991-05-17 | 1991-05-17 | Bottom jet regulator used on drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030851C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152241A (en) * | 2017-07-07 | 2017-09-12 | 中国石油天然气集团公司 | Drag bit device |
| WO2018036567A1 (en) * | 2017-01-20 | 2018-03-01 | 中国石油大学(华东) | Self-adaptive differential pressure-type drill bit |
-
1991
- 1991-05-17 CN CN 91107203 patent/CN1030851C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018036567A1 (en) * | 2017-01-20 | 2018-03-01 | 中国石油大学(华东) | Self-adaptive differential pressure-type drill bit |
| US10233695B2 (en) | 2017-01-20 | 2019-03-19 | China University Of Petroleum (East China) | Weight-on-bit self-adjusting drill bit |
| CN107152241A (en) * | 2017-07-07 | 2017-09-12 | 中国石油天然气集团公司 | Drag bit device |
| CN107152241B (en) * | 2017-07-07 | 2023-09-12 | 中国石油天然气集团公司 | Thermal jet drag bit device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030851C (en) | 1996-01-31 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |