CN202249849U - Underground pressurizing device - Google Patents

Underground pressurizing device Download PDF

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Publication number
CN202249849U
CN202249849U CN 201120303210 CN201120303210U CN202249849U CN 202249849 U CN202249849 U CN 202249849U CN 201120303210 CN201120303210 CN 201120303210 CN 201120303210 U CN201120303210 U CN 201120303210U CN 202249849 U CN202249849 U CN 202249849U
Authority
CN
China
Prior art keywords
supercharging
pressurizing
cavity
tubing string
sleeve pipe
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
CN 201120303210
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Chinese (zh)
Inventor
于连杰
张松峰
魏向辉
汪恩宝
张�林
武强
孙辉
郭俊磊
王晓彦
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.)
CNPC Bohai Equipment Manufacturing Co Ltd
Original Assignee
CNPC Bohai Equipment Manufacturing Co Ltd
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 CNPC Bohai Equipment Manufacturing Co Ltd filed Critical CNPC Bohai Equipment Manufacturing Co Ltd
Priority to CN 201120303210 priority Critical patent/CN202249849U/en
Application granted granted Critical
Publication of CN202249849U publication Critical patent/CN202249849U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an underground pressurizing device. In order to overcome the defects of complex structure, high manufacturing difficulty, high cost and the like of the current pressurizer used during oil drilling operation, according to the underground pressurizing device, a pressurizing pipe column (10) is arranged between a casing pipe (7) and a drilling tool pipe column (4); a circular space is formed between an inner hole of the pressurizing pipe column (10) and the drilling tool pipe column (4), and a circular space is also formed between an excircle of the pressurizing pipe column (10) and an inner hole of the casing pipe (7); a pressurizing casing pipe (3), a cavity body (1) and a pressurizing casing pipe (3) of the pressurizing pipe column (10) are fixedly connected with one another in turn from top to bottom; a packer (9) is arranged on the pressurizing casing pipe (3) below the cavity body (1) and is used for sealing and separating the circular space between the pressurizing pipe column (10) and the casing pipe (7); and a pressurizing water nozzle (2) is fixedly arranged on the cavity body (1) and is communicated with the circular spaces inside and outside the cavity body (1). The underground pressurizing device has the advantages that: the structure is simple and reasonable, and the circulation speed of underground liquid can be increased and the rock breaking and sand-carrying capabilities can be improved under the premise that the rated pressure of a ground pump pressure system is not changed.

Description

The downhole pressure increasing device
Technical field
The utility model relates in a kind of oil and gas well drilling operation and to improve the device that sand speed is taken in the down-hole circulation, especially relates to a kind of oil drilling and uses the downhole pressure increasing device.
Background technology
In order to improve the bit speed of oil and gas exploitation, strengthened research to drilling-fluid circulation system.The U.S. shows in the test of the seventies in last century, and when utilizing high pump pressure for the circulating system drilling well of 105MPa on ground, rate of penetration can improve 5~8 times, but owing to receive the restriction of high-pressure jet drilling system equipment, narrow in application range, cost is high.At present, drilling well is used under exceptional well hole conditions such as high angle hole, horizontal well with drilling-fluid circulation system, and broken rock and prop-carrying capacity reduce, thereby have influenced drilling efficiency.For example: be 18~20MPa in pump pressure, when discharge capacity is 28~32L/s, bore when reaching 3000 meters of well depths that circulating pressure has only 9~12MPa; When well depth reached 6000 meters, pressure was exhausted along the journey annular space basically.Therefore, well is dark more, and the pressure drop of shaft bottom drill bit is more little, and drilling fluid reduces washing away with prop-carrying capacity of shaft bottom, reduces drilling efficiency greatly.
In order to improve drilling efficiency, booster pump is installed in the down-hole mostly, " underground booster " (patent No. 94103752.5) be the positive displacement multicylinder hydraulic booster under the drive of a kind of mechanical commutation mechanism; Adopt geared reverser; Complex structure, manufacture difficulty is high, and cost is bigger.China's utility model patent " a kind of oil drilling underground booster " (patent No. 01216627.8) is installed between downhole motor and the drill bit, and it can make the shaft bottom fluid pressure improve more than 5 times under the situation that does not change the ground pump pressure.It relies on downhole motor that power is provided, and adopts plunger type multicylinder hydraulic supercharging design scheme, is made up of wobbler, a plurality of pressurized cylinder, plunger, flow channel for liquids, one way valve and load-carrying covering etc.Under the drive of power drilling tool inner rotator; Spherical chute on the coupled wobbler that connects also rotates at a high speed with identical rotating speed; Thereby it is reciprocating in pressurized cylinder to drive plunger, produces highly pressurised liquid, discharges from bit nozzle through the super-pressure pipeline; Realize high-pressure jet drilling, to improve rate of penetration.Because adopt plunger type multicylinder hydraulic supercharging design, structure is more complicated also, application life is short.
The utility model content
For there is complex structure in the booster that overcomes existing petroleum drilling operation use, manufacture difficulty is big, the high deficiency of cost, and the utility model provides a kind of downhole pressure increasing device.
The utility model solves the technical scheme that its technical problem adopted: the downhole pressure increasing device comprises sleeve pipe, drilling tool tubing string; The drilling tool tubing string is positioned at sleeve pipe; Between sleeve pipe and drilling tool tubing string, be provided with the supercharging tubing string; Between supercharging tubing string endoporus and the drilling tool tubing string cylindrical is annular space, is annular space between supercharging tubing string cylindrical and the cover pipe orifice.The supercharging sleeve pipe of supercharging tubing string, cavity, supercharging sleeve pipe from top to bottom are fixedly connected sequentially, and on the supercharging sleeve pipe of cavity below the annular space that packer is used for packing supercharging tubing string and sleeve pipe are installed; Be installed with the supercharging hydrophthalmia on the cavity, the annular space of supercharging hydrophthalmia connected chamber inside and outside.The cylindrical of cavity is a multidiameter broad in the middle small in ends, and the large-diameter upper end is up-small and down-big cone; Cavity large-diameter middle part endoporus is up-small and down-big conical bore; The lower surface circumference uniform distribution of cavity large-diameter is installed with 2 or 2 above supercharging hydrophthalmias, angle≤45 of the axis of supercharging hydrophthalmia and cavity axis °, and supercharging hydrophthalmia upper end communicates with the internal taper hole of cavity.The supercharging device use that is installed in series more than 2 or 2.
The beneficial effect of the utility model is, and is simple and reasonable for structure, can be under the prerequisite that does not change surface pump pressing system rated pressure; Increase the circulation rate of down-hole liquid, improve broken rock and prop-carrying capacity, and then improve drilling efficiency; Reduce drilling cost, improve the application life of underground booster.
Description of drawings
Fig. 1 is the utility model downhole pressure increasing apparatus structure and operating principle sketch map thereof.
Among the figure: 1. cavity, 2. supercharging hydrophthalmia, 3. supercharging sleeve pipe, 4. drilling tool tubing string, 5. drilling fluid passage, 6. internal layer drilling fluid passage, 7. sleeve pipe, 8. outer drilling fluid passage, 9. packer, 10. supercharging tubing string.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.But what those skilled in the art should know is that the utility model is not limited to the listed specific embodiment, as long as meet the spirit of the utility model, all should be included in the protection domain of the utility model.
The utility model downhole pressure increasing device comprises sleeve pipe 7, supercharging tubing string 10, drilling tool tubing string 4, and installs successively from outside to inside, is annular space between supercharging tubing string 10 endoporus and drilling tool tubing string 4 cylindricals, is annular space between supercharging tubing string 10 cylindricals and sleeve pipe 7 endoporus.
The cavity of supercharging tubing string 10 is fixedly connected and on the supercharging sleeve pipe 3 that supercharging sleeve pipe 3, cavity 1 below are installed packer 9 is installed and is used for the annular space between packing supercharging tubing string 10 and the sleeve pipe 7 in two ends about in the of 1.Be installed with supercharging hydrophthalmia 2 on the cavity 1, supercharging hydrophthalmia 2 is communicated with the annular space inside and outside the cavity 1.
The cylindrical of cavity 1 is a multidiameter broad in the middle small in ends, and the large-diameter upper end is up-small and down-big cone; Corresponding cavity 1 endoporus in large-diameter middle part is up-small and down-big conical bore; Conical cone angle inside and outside the cavity 1 is roughly the same.The lower surface of cavity 1 large-diameter is uniformly distributed along the circumference and is installed with 2 or 2 above supercharging hydrophthalmias 2, and 4 supercharging hydrophthalmias 2 are installed usually.Between the axis of supercharging hydrophthalmia 2 and cavity 1 axis angle should be arranged, its angle≤45 °, the best angle of angle is 25~30 °.Supercharging hydrophthalmia 2 upper ends communicate with the internal taper hole of cavity 1.Cavity 1 external surface that supercharging hydrophthalmia 2 is installed is processed into lug-shaped, can improves the flow quantity of supercharging tubing string 10 cylindricals and sleeve pipe 7 endoporus annular spaces.
In order to improve the abrasion-resistance of downhole pressure increasing device, can do on cavity 1 surface to strengthen and handle.
When using the utility model downhole pressure increasing device drillng operation, get into and get into the internal layer drilling fluid passage 6 between drilling tool tubing string 4 and the supercharging tubing string 10 when drilling tool tubing string 4 interior drilling fluids return through drilling fluid passage 5; Outer drilling fluid gets into outer drilling fluid 8 passages between sleeve pipe 7 and the supercharging tubing string 10 from well head; Under the effect of the packer 9 between sleeve pipe 7 and the supercharging tubing string; Have pressure reduction between outer drilling fluid and the internal layer drilling fluid, outer drilling fluid gets into internal layer drilling fluid passage 6 through the hydrophthalmia that is installed on the cavity 1, has quickened the backflow of drilling fluid; Promote the circulation rate and the prop-carrying capacity of whole internal layer drilling fluid, reached the purpose that improves drilling efficiency.
When using the utility model downhole pressure increasing device drillng operation, can be according to the needs of drillng operation, with uses that be installed in series of the supercharging device more than 2 or 2, realize the purpose of strong effect supercharging.
It should be noted that the foregoing description is example and unrestricted the utility model, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.

Claims (4)

1. downhole pressure increasing device; Comprise sleeve pipe, drilling tool tubing string; The drilling tool tubing string is positioned at sleeve pipe; It is characterized in that: between sleeve pipe (7) and drilling tool tubing string (4), being provided with supercharging tubing string (10), is annular space between supercharging tubing string (10) endoporus and drilling tool tubing string (4) cylindrical, is annular space between supercharging tubing string (10) cylindrical and sleeve pipe (7) endoporus.
2. according to the said downhole pressure increasing device of claim 1; It is characterized in that: the supercharging sleeve pipe (3) of said supercharging tubing string (10), cavity (1), supercharging sleeve pipe (3) from top to bottom are fixedly connected sequentially, and on the supercharging sleeve pipe (3) of cavity (1) below the annular space that packer (9) is used for packing supercharging tubing string (10) and sleeve pipe (7) are installed; Be installed with supercharging hydrophthalmia (2) on the cavity (1), supercharging hydrophthalmia (2) is communicated with the inside and outside annular space of cavity (1).
3. according to the said downhole pressure increasing device of claim 2, it is characterized in that: the cylindrical of said cavity (1) is a multidiameter broad in the middle small in ends, and the large-diameter upper end is up-small and down-big cone; Said cavity (1) large-diameter middle part endoporus is up-small and down-big conical bore; The lower surface circumference uniform distribution of said cavity (1) large-diameter is installed with 2 or 2 above supercharging hydrophthalmias (2), angle≤45 of the axis of supercharging hydrophthalmia (2) and cavity (1) axis °, and supercharging hydrophthalmia (2) upper end communicates with the internal taper hole of cavity (1).
4. according to the said downhole pressure increasing device of claim 3, it is characterized in that: the use that is installed in series more than 2 or 2 of said supercharging device.
CN 201120303210 2011-08-19 2011-08-19 Underground pressurizing device Expired - Fee Related CN202249849U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120303210 CN202249849U (en) 2011-08-19 2011-08-19 Underground pressurizing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120303210 CN202249849U (en) 2011-08-19 2011-08-19 Underground pressurizing device

Publications (1)

Publication Number Publication Date
CN202249849U true CN202249849U (en) 2012-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201120303210 Expired - Fee Related CN202249849U (en) 2011-08-19 2011-08-19 Underground pressurizing device

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Country Link
CN (1) CN202249849U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013026256A1 (en) * 2011-08-19 2013-02-28 中国石油天然气集团公司 Downhole pressurization device
CN110374507A (en) * 2019-07-24 2019-10-25 东北石油大学 A kind of underground booster

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013026256A1 (en) * 2011-08-19 2013-02-28 中国石油天然气集团公司 Downhole pressurization device
CN102953696A (en) * 2011-08-19 2013-03-06 中国石油集团渤海石油装备制造有限公司 Downhole supercharging device
CN110374507A (en) * 2019-07-24 2019-10-25 东北石油大学 A kind of underground booster
CN110374507B (en) * 2019-07-24 2020-11-24 东北石油大学 Underground supercharger

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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: 20120530

Termination date: 20190819

CF01 Termination of patent right due to non-payment of annual fee