CN202056034U - Helical surface reversing screw rod motor pressure booster - Google Patents

Helical surface reversing screw rod motor pressure booster Download PDF

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Publication number
CN202056034U
CN202056034U CN2011200621649U CN201120062164U CN202056034U CN 202056034 U CN202056034 U CN 202056034U CN 2011200621649 U CN2011200621649 U CN 2011200621649U CN 201120062164 U CN201120062164 U CN 201120062164U CN 202056034 U CN202056034 U CN 202056034U
Authority
CN
China
Prior art keywords
helical surface
helicoid
screw rod
rod motor
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011200621649U
Other languages
Chinese (zh)
Inventor
赵军友
徐依吉
赵峰
邹俊艳
成植刚
张振国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Petroleum Beijing CUPB
China University of Petroleum UPC East China
Original Assignee
China University of Petroleum UPC East China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Petroleum UPC East China filed Critical China University of Petroleum UPC East China
Priority to CN2011200621649U priority Critical patent/CN202056034U/en
Application granted granted Critical
Publication of CN202056034U publication Critical patent/CN202056034U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a helical surface reversing screw rod motor pressure booster which is used for improving the oilfield drilling speed. An outer shell of the pressure booster is divided into three sections; and a helical surface driving shaft, a helical surface spline shaft, a spring, a filtering cylinder, a plunger piston and other parts are arranged in the shell. As a power source, the screw rod motor drives the helical surface driving shaft to rotate together with the screw rod motor; and the inputted rotational motion is converted into vertical reciprocating motion under the action of the helical surface spline shaft and the spring, thereby driving the filtering cylinder and the plunger piston to conduct vertical reciprocating motion, so that a part of drilling fluid is sucked through an inlet valve and is discharged through a drain valve to achieve the purpose of boosting pressure. The screw rod motor for driving is mature in technology; an upper helical surface reversing mechanism and a lower helical surface reversing mechanism which are designed are simple in structure; an installed fluid inlet filtering device can prevent larger particles from entering a pump body so as to avoid the blockage of a spray nozzle; and as the filtering cylinder is connected with the plunger piston by a spring pin shaft, the assembly and the disassembly are convenient; and the inlet valve is arranged inside the plunger piston to reduce the volume of the pump body.

Description

Helicoid commutation screw motor pressurized machine
Technical field
In some deep-wells, ultradeep well drilling process, usually can run into the location of rock stratum more complicated, bit speed is very slow.A kind of helicoid commutation of ad hoc for this reason meter screw motor pressurized machine to improve bit speed, reduces drilling time.
Background technique
The superhigh pressure water jet technology has obtained in the drilling well field using widely at present, and when the pressure of spray liquid flow surpassed the intensity of rock, bit speed will increase substantially.Existing pressurized measure is broadly divided into two kinds: a kind of is to the supercharging of drilling fluid ground, promptly on the ground whole drilling fluids is carried out supercharging, then the drilling fluid after the supercharging is transported to drill bit nozzle by drill string, to reach brokenly the purpose of rock speedup.But the ground supercharging is owing to be subjected to the restriction of pressure piping, and pressure loss is big in the pressurization, and Energy Efficiency Ratio is very poor, therefore is not used widely.Another kind is exactly a downhole pressure increasing, and what come out has static pressure type pressurized machine and a jet-type pressurized machine, and working principle all is by the nearly drill bit pressurized machine in down-hole the part drilling fluid to be increased to high pressure.Because these supercharging devices all have the hydraulic pressure changement of more complicated, have increased its manufacture difficulty, and inner vibratory impulse is bigger, causes parts wear more serious, and operating life is shorter.
Based on above analysis and research, in order to improve the deficiency in the above-mentioned pressurized measure, we design a kind of helicoid commutation screw motor pressurized machine.
Summary of the invention
The purpose of this utility model be exactly with the part drilling fluid at downhole pressure increasing, improve bit speed, solve the slow problem of bit speed, overcome the short defective of life-span that existing suction booster exists simultaneously.
The technical solution of the utility model is: in the shell that is divided into three joints, be equipped with from top to down: screw motor 1, helicoid driving shaft 2, helicoid splined shaft 3, spring 4, shell 5, anti-skidding retainer nut 6, filtration barrel body 7, axis pin of the spring 8, plunger 9, plunger cylindrical shell 10, feed liquor valve 11, spool 12 and liquid discharging valve 13, the surface of contact between helicoid driving shaft 2 and the helicoid splined shaft 3 are secondary helicoids.Screw motor 1 is driving helicoid driving shaft 2 as power source and is rotating together, rotatablely move to be converted to and pump by what the effect of helicoid splined shaft 3 and spring 4 will be imported, thereby driving filtration barrel body 7 and plunger 9 pumps, a part of drilling fluid is sucked from the feed liquor valve, discharge from liquid discharging valve, reach the purpose of supercharging.
The screw motor technology maturation of the utility model driving usefulness, reliable; The designed changement of helicoid up and down, simple in structure, processing easily, long service life.The liquid inlet filtrating equipment of being installed can prevent that larger particles from entering the pump housing, reduces the moving element wearing and tearing, avoids spray nozzle clogging.The design of feed liquor valve reduces pump housing volume in plunger inside.
Description of drawings
Accompanying drawing is a structure diagram of the present utility model, and wherein " A-A " figure on the left side is the sectional view of being got from plan view, and the structure situation of this section part is described.
Embodiment
As the screw motor 1 of power source, be connected with helicoid driving shaft 2 by screw thread, drive one and play rotation; Simultaneously power is passed on the helicoid splined shaft 3, the helicoid splined shaft is installed in the internal spline on the housing 5, because the leading role of spline, splined shaft 3 can only down be done straight line motion; After helicoid arrived peak, the spring 4 promotion splined shafts that are installed between splined shaft and the housing up moved, and finish an oscillation cycle.Helicoid splined shaft 3 and then drive filtration barrel body 7 and plunger 9 pump together, and during rising, the feed liquor valve 11 that is contained in plunger 9 lower ends is opened, and during decline, the liquid discharging valve 13 that is contained in plunger cylindrical shell 10 lower ends is opened, thereby reaches the purpose of supercharging.
For the ease of assembling, whole casing adopts three joints, forms by scyewed joint, wherein is processed with internal spline on Shang Duan the shell 5; Helicoid splined shaft 3 passes through scyewed joint with filtration barrel body 7, and an anti-skidding retainer nut 6 is installed, in order to avoid loosening; Filtration barrel body 7 connects by axis pin of the spring 8 with plunger 9, has made things convenient for installation; Do not have large particle in the drilling fluid that filtration barrel body 7 guarantees to suck, play the effect of protection pressurized machine, this filtrating equipment, can not stop up so have the self-cleaning function simultaneously because design in the sprue of drilling fluid, is subjected to the flushing of liquid stream; Feed liquor valve 11 designs in plunger inside, thereby has reduced the volume of pressurized machine; Spool adopts conical surface seal.

Claims (6)

1. a helicoid commutation screw motor pressurized machine that is used to improve oil drilling speed is characterized in that: in the shell that is divided into three joints, be equipped with from top to down: screw motor (1), helicoid driving shaft (2), helicoid splined shaft (3), spring (4), shell (5), anti-skidding retainer nut (6), filtration barrel body (7), axis pin of the spring (8), plunger (9), plunger cylindrical shell (10) feed liquor valve (11), spool (12) and liquid discharging valve (13).
2. pressurized machine according to claim 1 is characterized in that: the surface of contact between helicoid driving shaft (2) and the helicoid splined shaft (3) is a secondary helicoid.
3. pressurized machine according to claim 1 is characterized in that: the external splines of helicoid splined shaft (3) lower end is installed in the internal spline of shell (5), the middle spring (4) of installing.
4. pressurized machine according to claim 1 is characterized in that: helicoid splined shaft (3) lower end connects with filtration barrel body (7) by screw thread, and has adopted anti-skidding retainer nut (6).
5. pressurized machine according to claim 1 is characterized in that: filtration barrel body (7) connects by axis pin of the spring (8) with plunger.
6. pressurized machine according to claim 1 is characterized in that: the sealing surface of spool (12) is the conical surface, and feed liquor valve (11) is installed in plunger (9) inside.
CN2011200621649U 2011-03-03 2011-03-03 Helical surface reversing screw rod motor pressure booster Expired - Fee Related CN202056034U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200621649U CN202056034U (en) 2011-03-03 2011-03-03 Helical surface reversing screw rod motor pressure booster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200621649U CN202056034U (en) 2011-03-03 2011-03-03 Helical surface reversing screw rod motor pressure booster

Publications (1)

Publication Number Publication Date
CN202056034U true CN202056034U (en) 2011-11-30

Family

ID=45016005

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200621649U Expired - Fee Related CN202056034U (en) 2011-03-03 2011-03-03 Helical surface reversing screw rod motor pressure booster

Country Status (1)

Country Link
CN (1) CN202056034U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103452481A (en) * 2013-09-05 2013-12-18 常州大学 Downhole booster
CN103670280A (en) * 2013-11-29 2014-03-26 中国石油大学(北京) Blade motor driving type downhole supercharging device and blade motor driving type downhole supercharging method
CN104213834A (en) * 2013-06-05 2014-12-17 中国石油天然气集团公司 Drag reduction tool and reciprocating axial process method
CN104989616A (en) * 2015-05-28 2015-10-21 中国石油天然气股份有限公司 Turbocharger of oil well pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104213834A (en) * 2013-06-05 2014-12-17 中国石油天然气集团公司 Drag reduction tool and reciprocating axial process method
CN103452481A (en) * 2013-09-05 2013-12-18 常州大学 Downhole booster
CN103670280A (en) * 2013-11-29 2014-03-26 中国石油大学(北京) Blade motor driving type downhole supercharging device and blade motor driving type downhole supercharging method
CN103670280B (en) * 2013-11-29 2018-07-13 中国石油大学(北京) Sliding-vane motor drive-type underground pressurizing device and method
CN104989616A (en) * 2015-05-28 2015-10-21 中国石油天然气股份有限公司 Turbocharger of oil well pump

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111130

Termination date: 20140303