CN102022078A

CN102022078A - Particle percussive drilling method and device

Info

Publication number: CN102022078A
Application number: CN2009101699493A
Authority: CN
Inventors: 张杨; 赵惠清; 吴仲华; 温林荣; 周富刚
Original assignee: Beijing University of Chemical Technology; Drilling Technology Research Institute of Sinopec Shengli Petroleum Administration Bureau
Current assignee: Beijing University of Chemical Technology; Drilling Technology Research Institute of Sinopec Shengli Petroleum Administration Bureau
Priority date: 2009-09-11
Filing date: 2009-09-11
Publication date: 2011-04-20

Abstract

The invention provides particle percussive drilling method and device. A set of particle injection system is connected to a pumpout pipe of a drill pump so that high-pressure slurry to be injected in a well is continuously mixed with hard particles, waterpower energy of drilling fluid and hard steel particles carried by the drilling fluid impact rocks together so as to quickly break rocks under the joint action of mechanical and particle impact; in addition, a set of particle separation system is connected in a slurry return pipe at the head of the well and used for separating metal particles out for recycling; and a particle storage and treatment system is used for treating and storing the particles after the particle percussive drilling is stopped.

Description

Particle impacting boring method and device

Technical field

The present invention relates to a kind of novel drilling rig in the oil development field, it can improve the rate of penetration in the firm hard formation.

Background technology

At present, conventional drilling technology is to utilize the pressure of the drill of shaft bottom drill bit and rotation to realize mechanical rock breaking, reach the purpose of creeping into, this mode only relies on the mechanism of drill bit to break rock when creeping into firm hard formation, the effect of mud is a cutting carring, can't realize that waterpower adds the combined-breaking rock effect of machinery, duty cycle is long, drilling cost is high.Along with the increase of domestic deep-well, ultradeep well quantity, it is more urgent that the solution of this problem becomes.

Summary of the invention

For overcoming problems such as length duty cycle that existing drilling technology utilizes mechanical rock breaking to cause merely, drilling cost height, this patent provides a kind of novel drilling rig, this device can improve the rate of penetration of rig in firm hard formation, saves cost, the shortening cycle.

The technical scheme of patent device is: insert circular hardened steel particle in drilling fluid, make it impact bottom rock by bit port, thereby reach the effect that machinery adds the particle impacting combined-breaking rock.Different with the conventional drilling technology, this process does not only depend on drill bit to realize mechanical rock breaking, but also in the borehole pump exit particle is added in the mud by the particle injected system, make it descending up to drill bit along drill string, and quickened at the hydrophthalmia place, with high velocity shock rock, make it produce higher stress, fractured rock.The landwaste that is crashed to pieces is recycled to ground with steel particles and mud by the ring control, by the particle retracting device steel particles is separated afterwards, so that re-inject in the mud of circulation, reuses.

The beneficial effect of this patent is that fast 3 to 5 times of the bit speed of more traditional drilling technology shortens the operating time greatly, has saved manpower, fuel, rent, drilling time and other various drilling well consumption.

Description of drawings

Below in conjunction with drawings and Examples this patent is described.

Fig. 1 is that the single unit system of this patent connects work sheet

Fig. 2 is the injected system composition diagram of this patent

Fig. 3 is a separate particles system composition diagram

Fig. 4 is the particle induction system of this patent and the treatment system work sheet of particle storage

1. borehole pumps among the figure, 2. mud pit, the 3. inflow pipe of mud pit, 4. particle slurry switch valve, 5. mud valve 6. injects the bin pressure pipeline, 7. inject the mud channel of well, 8. spiral propeller 9. descends bin, 10. Hydraulic Station, 11. pressurization mud valves, 12. hydraulic control particle slurry valves, 13. last bin, 14. inject pylon, 15. purge valves, 16. hydraulic control particle slurry valve, 17. particles inject hopper, 18. series connection panconveyors, 19. efferent duct, the powder funnel of 20. series connection panconveyors, 21. particles are handled and are entered pipe, 22. truck with grout mixer and water tank, 23. blowers, 24. discharge pipes, 25. charging door, 26. multiple spots loading and unloading material is scraped buried plate conveyer, 27. charging doors, 28. the particle lead-in groove, 29. efferent ducts, 30. hair-dryers, 31. Turnover Box, 32. take off the magnetic machine, 33. magnetic separators, 34. vibrosieve, 35. vibrosieve effusers, 36. vibrosieve inflow pipes, 37. particle slurry switch valve, 38. flow into former vibration screen casing, 39. particle slurry switch valves, mud whereabouts control valve is returned in 40. shaft bottoms, 41. former vibrosieve, 42. overhead pipe, 43. goosenecks, 44. water taps, 45. kelly bar, 46. rotating disk, 47. sleeve pipes, 48. drilling rods, 49. drill collar, 50. drill bit, 51. stratum, 52. storage boxes.

This patent particle impacting drilling rig mainly is divided into particle injected system, separate particles system, particle induction system and particle stores processor system, and method of work and the whole flow process to each one describes below.

When drill bit gets into firm hard formation and needs the particle impacting drilling rig, the particle slurry switch valve 4 on the borehole pump discharge line is opened, be communicated with injected system; Mud valve 5 is opened, and is communicated with to inject bin pressure pipeline 6; Have the shaft bottom and return the particle slurry switch valve 37 of mud whereabouts control action and open, be communicated with vibrosieve inflow pipe 36; Particle slurry switch valve 39 is opened, and is communicated with vibrosieve effuser 35; Mud whereabouts control valve 40 is returned in the shaft bottom closes.

The particle induction system is started working, and particle flows out from the higher storage box 52 in installation site, and the charging door 27 of scraping the buried plate conveyer through multiple spot loading, unloading material enters scrapes buried plate conveyer 26, and enters injected system from efferent duct 19.Inject the device that part has two covers to work independently respectively, after particle entered the powder funnel 20 of the series connection panconveyor of a covering device wherein from efferent duct 19, the particle that enters the top that is arranged in injection tower 14 through series connection panconveyor 18 injected hopper 17.The particle that particle injects hopper 17 enters bin 13, following bin 9 by hydraulic control particle slurry valve 16 and 12.When injected system is started working, after last bin 13 and following bin 9 are filled particle, hydraulic control particle slurry valve 16 cuts out, pressurization is opened with mud valve 11, give two bins pressurization up and down, mud valve 11 is closed after reaching slush pump to pump pressure, and spiral propeller 8 constantly pushes the mud channel 7 that injects well with the particle slurry in the bin, after inject drilling rod, shaft bottom through gooseneck again.The very little drill-in fluid of granularity in this process before the spiral propeller 8 outlet upper and lower bin of then playing a reversed role back reaches bin pressure and drilling hydraulic equilibrium of forces.Be subjected to the effect of gravity this moment in bin, the metallic that proportion is bigger can sink to the bottom of bin, and when the liquid level at particle place was positioned at hydraulic control particle slurry valve 12 times, hydraulic control particle slurry valve 12 cuts out and bin is isolated up and down opened.Purge valve 15 is opened afterwards, when reducing to atmospheric pressure, last bin pressure closes again, hydraulic control particle slurry valve 16 is opened, the particle that particle injects hopper 17 enters bin 13, last bin 13 full back hydraulic control particle slurry valves 16 cut out, and hydraulic control particle slurry valve 12 is opened, and pressurization is opened with mud valve 11, give two bins pressurization up and down, repeat above-mentioned injection process then.

Piece-rate system was started working after particle was injected into mud and enters a period of time of working in the well.The mud that has particle that returns from the shaft bottom enters vibrosieve 34 by overhead pipe 42 and vibrosieve inflow pipe 36 and sieves.The vibrosieve unit 41 that mud that screening is come out and big landwaste are delivered to the outfit of original well site by vibrosieve effuser 35 is further handled, and particle and carry out magnetic with the approaching landwaste of its granularity by magnetic separator 33 and separate, isolated particle enters Turnover Box 31 through taking off after magnetic machine 32 takes off magnetic.In case there is isolated particle to flow in the Turnover Box 31, the particle that then stops storage box 52 flows out.The particle of separating that enters Turnover Box interior 31 is afterwards carried by scraping buried plate conveyer 26 from charging door 25, and enters the powder funnel 20 of the series connection panconveyor of injected system from efferent duct 19, thereby begins to inject recycling of particle.

In the time will stopping using the particle slurry drilling well, the stores processor system starts working.The emptying point of scraping buried plate conveyer 26 is converted to 21 by 19, take off particle behind the magnetic and handle to enter from particle and stir in the cylinder that pipe 21 is sent to truck with grout mixer and water tank 22 and overturn, meanwhile hair-dryer 30 by blower 32 constantly in cylinder blowing carry out drying.When treating that the interior particle weight of cylinder reaches the service load of truck with grout mixer and water tank, close Turnover Box 31, stop to scrape buried plate conveyer 26, the continuous isolated particle of piece-rate system then temporarily is deposited in the Turnover Box 31.After treating that particle drying in truck with grout mixer and water tank 22 cylinders is finished, open and scrape buried plate conveyer 26, the particle in the cylinder is then entered by charging door 25 from discharge pipe 24 and scrapes buried plate conveyer 26 and deliver to discharge nozzle 29, and enters storage in the storage box 52 by particle lead-in groove 28.After particle in truck with grout mixer and water tank 22 cylinders has been arranged, open Turnover Box 31, particle to be dried enters in the same way and carries out drying in the cylinder of truck with grout mixer and water tank 22 and handle, above process repeat constantly that particle in mud all separates and drying is finished, put into till the storage box 52.

Claims

1. novel boring method and device, it is characterized in that: connect a cover particle injected system on the pipeline pumping of borehole pump, make and constantly sneak into the particle of hard particle diameter in the high-pressure slurry that will inject into well in the 2-8mm scope, it is descending up to drill bit along drill string, the place is quickened at hydrophthalmia, with high velocity shock rock, thereby reach the effect of machinery and particle impacting combined-breaking rock, improve the rate of penetration in the firm hard formation, in well head mud return pipeline, connect a cover separate particles system, metallic particles is separated the repetitive cycling utilization from the mixed liquor that the shaft bottom is returned.

2. according to claim 1 described high pressure particle impacting boring method and device, it is characterized in that: the hydraulic control particle slurry valve (16) of injected system wherein, last bin (13), hydraulic control particle slurry valve (12), two bins (9) and spiral propeller (8) are along short transverse series connection successively from top to bottom down, last bin (13) top is connected into purge valve (15), on, be connected into pressurizing valve (11) in the passage of two bins down, particle injects hopper (17) through the particle that series connection panconveyor (18) enters the top that is arranged in injection tower (14) simultaneously, enter bin (13) and following bin (9) by hydraulic control particle slurry valve (16) and (12) again, by hydraulic control particle slurry valve (16), hydraulic control particle slurry valve (12), the alternately mode of Push And Release of purge valve (15) and pressurizing valve (11), the particle of pressurization constantly is provided for spiral propeller (8), spiral propeller (8) then constantly advances the mud channel (7) that injects well with the particle slurry of having pressurizeed in the bin, after inject drilling rod through gooseneck (43) again, the shaft bottom.

3. according to claim 1 described high pressure particle impacting boring method and device, it is characterized in that: piece-rate system wherein adopts elder generation to sift out particle with vibrosieve (34) and reaches and the approaching landwaste of particle diameter, and then utilize magnetic separator (33) that metallic is therefrom selected, take off order and method that magnetic (32) is handled at last or again, and from vibrosieve (34) to magnetic separator (33), demagnetizer (32) particle realizes flowing into and flowing out by difference in height.

4. according to claim 1 described high pressure particle impacting boring method and device, it is characterized in that: it is the processing mode that truck with grout mixer and water tank (22) stirs and blower fan (30) is dried simultaneously that storage processing method wherein adopts.