CN105937368A - Novel composite blockage removal acidizing pipe nipple - Google Patents
Novel composite blockage removal acidizing pipe nipple Download PDFInfo
- Publication number
- CN105937368A CN105937368A CN201610364339.9A CN201610364339A CN105937368A CN 105937368 A CN105937368 A CN 105937368A CN 201610364339 A CN201610364339 A CN 201610364339A CN 105937368 A CN105937368 A CN 105937368A
- Authority
- CN
- China
- Prior art keywords
- pipe nipple
- main body
- baffle plate
- valve
- overhead gage
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Abstract
The present invention provides a novel composite blockage removal acidizing pipe nipple which comprises a pipe nipple main body, an upper baffle plate and a lower baffle plate; the pipe nipple main body is a hollow cylinder; the upper baffle plate is disposed at an upper portion of the inside space of the pipe nipple main body; the lower baffle plate is disposed at a lower portion of the inside space of the pipe nipple main body; a sealed cavity is formed between the upper baffle plate and the lower baffle plate; a side wall of the pipe nipple main body is provided with a deflection through hole; the deflection through hole is disposed over the horizontal plane where the upper baffle plate is located; the side wall of the pipe nipple main body is also provided with a first valve; and the upper baffle plate is provided with a plurality of second valves. According to the novel composite blockage removal acidizing pipe nipple, acid liquid is isolated and stored in the sealed cavity, and application is targeted to the strata. Excessive application of the acid liquid can be prevented, cost is reduced. The acid liquid can be efficiently used, and environmental pollution can be effectively prevented. The acid liquid in the sealed cavity is isolated from other liquid in a well, and the acidizing effect is prevented from being influenced by concentration decrease.
Description
Technical field
The invention belongs to field of oil drilling, especially relate to a kind of NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple.
Background technology
During natural petroleum gas field, in order to obtain more oil and gas production, it will usually employing perforation,
The PROCESS FOR TREATMENT bottom such as pressure break, acidifying, opens expansion payzone gap.Along with the development of payzone recovery percent,
Payzone gap often blocks reduction oil and gas production, it is therefore desirable to carry out de-plugging operation.General de-plugging is made
Industry is divided into two classes, physics de-plugging and chemical plugging removal, is used alone the plugging removal effect that one is difficult to reach satisfied,
Occur that physical-chemical composite deblocking process first carries out hydraulic blow process at present, made oil reservoir nearly well ground
Band simultaneously forms many radial microscopic checks, clamp-ons oil reservoir followed by by de-plugging agents such as acid solutions, thus
Reach can thoroughly release oil layer blocking, the percolation ability of oil reservoir near wellbore zone can be increased substantially again, from
And obtain significant increasing yield and injection effect.Acidification technique therein does not carries out isolation processing, acid solution to acid solution
Often there is lowering of concentration, infection tubing string, lack the specific aim that stratum uses, and cause acid solution
Excess causes residual, well-flushing to return row's after stain environment for reaction completely.
Summary of the invention
In view of this, it is contemplated that propose a kind of NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple, current oil gas is solved
The acid solution safety in utilization feature of environmental protection occurred in well composite blockage relieving is poor, consumption big, lowering of concentration impact acidifying
The problems such as effect, it is achieved reduce operational risk and cost, reach to improve the purpose of plugging removal effect.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple, including pipe nipple main body, overhead gage and lower baffle plate, described short
Joint main body is hollow cylinder, and described overhead gage is arranged on the top of pipe nipple body interior space, described lower block
Plate is arranged on the bottom of pipe nipple body interior space, forms closed chamber between described overhead gage and lower baffle plate,
Described pipe nipple main body wall offers water conservancy diversion through hole, and described water conservancy diversion through hole is arranged on overhead gage place horizontal plane
Top, described pipe nipple main body wall is additionally provided with for the first valve of airtight cavity liquid injecting, described
Overhead gage offers the liquid above some control overhead gages and flows to the second valve of closed chamber.
Further, described first valve and the second valve are check valve.
Further, between described overhead gage and pipe nipple main body, be provided with sealing ring, described lower baffle plate with
It is provided with lower seal between pipe nipple main body.
Further, described second valve number is six, and six valves are that herringbone is distributed in overhead gage
Surface.
Between overhead gage and lower baffle plate, form closed chamber, the first valve inject acid solution to closed chamber.When beating
Being depressed into lower baffle plate to rupture, overhead gage upper liquid flows into bottom through the second valve, and promotes acid solution by pipe nipple
Lower body part flow out, and flow into blocking payzone be acidified.
Relative to prior art, NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple of the present invention has the advantage that
(1) acid solution isolation is left in closed chamber by this composite blockage relieving acidifying pipe nipple, uses and has stratum
Specific aim；
(2) this composite blockage relieving acidifying pipe nipple is it can be avoided that being excessively used of acid solution, reduces cost；
(3) this composite blockage relieving acidifying pipe nipple can effective use acid solution, be prevented effectively from environmental pollution；
(4) acid solution in the annular seal space of this composite blockage relieving acidifying pipe nipple and other liquid isolation in well, keep away
Exempt from lowering of concentration and affect acidizing effect.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the present invention's
Schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.?
In accompanying drawing:
Fig. 1 is the NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple structural representation described in the embodiment of the present invention；
Fig. 2 is overhead gage the second valve distribution schematic diagram described in the embodiment of the present invention.
Description of reference numerals:
1-pipe nipple main body；2-water conservancy diversion through hole；3-overhead gage；The upper sealing ring of 4-；5-the second valve；6-
One valve；7-lower baffle plate；8-lower seal.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
On " ", D score, "front", "rear", "left", "right", " vertically ", " level ",
" push up ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be for based on shown in accompanying drawing
Orientation or position relationship, be for only for ease of the description present invention and simplifying and describe rather than instruction or dark
Show that device or the element of indication must have specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only used for describing
Purpose, and it is not intended that instruction or hint relative importance or implicit indicate indicated technical characteristic
Quantity.Thus, the feature defining " first ", " second " etc. can be expressed or impliedly wrap
Include one or more this feature.In describing the invention, except as otherwise noted, " multiple "
It is meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term
" install ", " being connected ", " connection " should be interpreted broadly, and connect, also for example, it may be fixing
Can be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.
For the ordinary skill in the art, can understand that above-mentioned term is in the present invention by concrete condition
In concrete meaning.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
This composite blockage relieving acidifying pipe nipple specifically includes that pipe nipple main body 1, water conservancy diversion through hole 2, overhead gage 3, on
Sealing ring 4, the second valve 5, the first valve 6, lower baffle plate 7, lower seal 8.
Seeing Fig. 1, four water conservancy diversion through hole 2 uniform ring, around being distributed in the upper portion side wall of pipe nipple main body 1, are led
Opening 2 connects pipe nipple main body 1 interior or exterior space, for pipe nipple main body 1 internal injection liquid.Upper gear
Plate 3 is positioned at the top of pipe nipple main body 1 inner space, and below water conservancy diversion through hole 2；Overhead gage 3 is with short
It is provided with sealing ring 4 between joint main body 1；Overhead gage 3 surface configuration has six the second valves 5, six
Valve is that herringbone is evenly distributed on overhead gage 3, and concrete distribution sees Fig. 2.In pipe nipple main body 1
Middle part sidewall is additionally provided with the first valve 6.Lower baffle plate 7 is positioned at pipe nipple main body 1 lower inside, lower baffle plate 7
And press from both sides lower seal 8 between pipe nipple main body 1.Closed chamber is defined between overhead gage 3 and lower baffle plate 7, the
One valve 6 and the second valve 5 are check valve.First valve 6 is used for injecting acid solution in closed chamber,
Second valve 5 is for being injected into the liquid above overhead gage 3 in closed chamber.
This pipe nipple bottom connects hydraulic blow pipe nipple, and this pipe nipple top connects tubing string to ground.The present invention exists
Before lower going-into-well cylinder, the first valve 6 in the closed chamber formed between overhead gage 3 and lower baffle plate 7, inject acid
Liquid, discharges the gas in closed chamber simultaneously.After completing acid solution injection, by hydraulic blow pipe nipple and this pipe nipple
Enter down to blocking payzone, before starting hydraulic blow pipe nipple, suppress and pressure break lower baffle plate 7.Ground
After pressure display lower baffle plate 7 ruptures, continue to suppress to starting hydraulic blow pipe nipple.Now, hydraulic blow
Occur (i.e. below lower baffle plate 7) above pipe nipple that pressure reduces district, cause the space pressure under overhead gage 3
Reducing, the liquid on overhead gage 3 is flowed into below overhead gage 3 by the second valve 5, and forces acid solution stream
Enter hydraulic blow pipe nipple, enter back into blocking payzone and complete acidizing treatment.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, should be included in
Within protection scope of the present invention.
Claims (4)
1. a NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple, it is characterised in that: this pipe nipple include pipe nipple main body,
Overhead gage and lower baffle plate, described pipe nipple main body is hollow cylinder, and described overhead gage is arranged in pipe nipple main body
The top in space, portion, described lower baffle plate is arranged on the bottom of pipe nipple body interior space, described overhead gage with
Forming closed chamber between lower baffle plate, described pipe nipple main body wall offers water conservancy diversion through hole, described water conservancy diversion through hole
Being arranged on the top of overhead gage place horizontal plane, described pipe nipple main body wall is additionally provided with for closed chamber
First valve of interior fluid injection, the liquid that described overhead gage offers above some control overhead gages flows to airtight
Second valve in chamber.
NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple the most according to claim 1, it is characterised in that: described
First valve and the second valve are check valve.
NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple the most according to claim 1 and 2, it is characterised in that:
It is provided with sealing ring between described overhead gage and pipe nipple main body, sets between described lower baffle plate and pipe nipple main body
It is equipped with lower seal.
NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple the most according to claim 3, it is characterised in that: described
Second valve number is six, and six valves are that herringbone is distributed in overhead gage surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364339.9A CN105937368B (en) | 2016-05-26 | 2016-05-26 | A kind of NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364339.9A CN105937368B (en) | 2016-05-26 | 2016-05-26 | A kind of NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105937368A true CN105937368A (en) | 2016-09-14 |
| CN105937368B CN105937368B (en) | 2019-04-02 |
Family
ID=57152180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610364339.9A Active CN105937368B (en) | 2016-05-26 | 2016-05-26 | A kind of NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105937368B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424326A (en) * | 2017-08-25 | 2019-03-05 | 中国石油天然气股份有限公司 | Downhole tool |
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| US20030234106A1 (en) * | 2001-09-28 | 2003-12-25 | Surjaatmadja Jim B. | Downhole tool and method for fracturing a subterranean well formation |
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| CN201443382U (en) * | 2009-06-05 | 2010-04-28 | 中国石油化工股份有限公司胜利油田分公司桩西采油厂 | Downhole dosing device |
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| CN203702092U (en) * | 2014-02-24 | 2014-07-09 | 沈阳一特电工有限公司 | Oil production underground chemical administration liquid compensation device |
| CN104047574A (en) * | 2013-03-13 | 2014-09-17 | 中国石油天然气股份有限公司 | Down-hole liquid release device and method for oil and gas fields |
| CN204098886U (en) * | 2014-08-12 | 2015-01-14 | 李静 | Producing well dosing supercharging device |
| CN204252901U (en) * | 2014-09-25 | 2015-04-08 | 中国石油天然气股份有限公司 | A kind of mechanical block-relief device |
| CN204511410U (en) * | 2015-02-13 | 2015-07-29 | 西安奥依尔石油科技有限公司 | A kind of underground intelligent chemical injection device |
| CN205778584U (en) * | 2016-05-26 | 2016-12-07 | 中国石油集团渤海钻探工程有限公司 | A kind of NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple |
-
2016
- 2016-05-26 CN CN201610364339.9A patent/CN105937368B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030234106A1 (en) * | 2001-09-28 | 2003-12-25 | Surjaatmadja Jim B. | Downhole tool and method for fracturing a subterranean well formation |
| RU2263235C1 (en) * | 2004-07-27 | 2005-10-27 | Зиновий Дмитриевич Хоминец | Method of operation of well jet unit at acid formation treatment |
| CN2758460Y (en) * | 2004-09-27 | 2006-02-15 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Layered acidification drain valve |
| CN201443382U (en) * | 2009-06-05 | 2010-04-28 | 中国石油化工股份有限公司胜利油田分公司桩西采油厂 | Downhole dosing device |
| CN202338309U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Underground automatic quantitative medicine-feeding flow string of pumping well |
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| CN203702092U (en) * | 2014-02-24 | 2014-07-09 | 沈阳一特电工有限公司 | Oil production underground chemical administration liquid compensation device |
| CN204098886U (en) * | 2014-08-12 | 2015-01-14 | 李静 | Producing well dosing supercharging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424326A (en) * | 2017-08-25 | 2019-03-05 | 中国石油天然气股份有限公司 | Downhole tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105937368B (en) | 2019-04-02 |
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| GR01 | Patent grant | ||
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Effective date of registration: 20210917 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: No.106 Huanghai Road, Binhai New Economic and Technological Development Zone, Tianjin 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |