CN201144670Y - Highly effective scaling tool for sleeve - Google Patents
Highly effective scaling tool for sleeve Download PDFInfo
- Publication number
- CN201144670Y CN201144670Y CNU2007201872385U CN200720187238U CN201144670Y CN 201144670 Y CN201144670 Y CN 201144670Y CN U2007201872385 U CNU2007201872385 U CN U2007201872385U CN 200720187238 U CN200720187238 U CN 200720187238U CN 201144670 Y CN201144670 Y CN 201144670Y
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- China
- Prior art keywords
- blade
- scale removal
- scale
- conical rod
- utility
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Abstract
The utility model relates to a scale removing device of a casing with high efficiency, which is directly connected under an oil tube, and can remove the scale by the dead weight of the oil tube and inertia of a lowering pipe string. The utility model comprises an upper joint, a main body of the device, a scale removal blade and a lower joint. The utility model is characterized in that the main body is a conical rod with taper from top to bottom. The scale removal blade is a spiral typed special steel blade. The external edges of the blade are complemented with each other. Four blade groups are wound around the conical rod. Each group of blade comprises a forward spinning blade and a reverse spinning blade. The blade is spinning forward and then reversed. The upper joint and the lower joint are on the two ends of the conical rod. Special chemical agents are not necessary by using the device to remove scale. The device also has no corrosion action to the shaft inner casing and the oil tube. The shaft bottom is only cleaned by sand washing when construction is completed which can reduce service charge of a pump-tank truck. General current repair operation equipment is used in construction. Scale removing and shaft cleaning are completed by using once drilling string, which greatly reduces operation cost.
Description
Technical field
The utility model relates to a kind of directly being connected below the oil pipe, finishes the high-efficiency casing scale removal instrument of scale removal by oil pipe deadweight and the inertia of transferring tubing string.
Background technology
In the oilfield process, the sleeve pipe fouling tends to cause the interior latus rectum of sleeve pipe to dwindle, major diameter downhole tool accessory can't descend to the precalculated position, thereby influences the carrying out of part increasing yield and injection measure, and the fouling of part Casing Failure seriously also may cause the interior tubing string of well to rise to come out and cause overhaul.Several years ago, Jilin Oil Field has successively been attempted chemical cleaning, the scale removal of helicoid hydraulic motor waterpower, has been passed through heavy repair task equipment, utilizes ground rotating disk power to carry out the down-hole milling except that enough waiting sleeve pipe machinery descaling method.
But these three kinds of descaling methods are restricted in applying process owing to himself the deadly defect of oneself is arranged all:
The one, chemical cleaning, because different blocks fouling mechanism is different with dirty matter composition, the scale remover prescription that needs is also different, be difficult to find a kind of scale remover prescription of general effect stability, and the main scale removal composition of inorganic scale scale remover is acid, equipment such as OIH pipe, sleeve pipe are inevitably had certain corrosiveness, also there is nocuity on the stratum, so be unfavorable for applying.
The 2nd, the scale removal of screw drill waterpower, helicoid hydraulic motor is subjected to power influences, easily produces condition restriction such as ground reverse, in new people's area field experiment process, the scale removal success rate is relatively low, have only about 80%, the unsuccessful part of screw drill scale removal has increased operating cost.Simultaneously, because helicoid hydraulic motor relies on waterpower work, need the pump tank car and cooperate, long between the stopping time during construction etc., service charge increase etc. has also increased operating cost.
The 3rd, mechanical descaling, this method construction success rate height, shortcoming is that to employ the heavy repair task equipment construction cycle long, operating expenses is too high.
Scale removal construction technology originally is owing to all there is the drawback of self, and sleeve pipe scale removal job development presses for a kind of novel shutoff substitute products.This product will possess the dual superiority that the construction success rate is high and construction cost descends significantly.
The utility model content
The purpose of this utility model is to provide a kind of and directly is connected below the oil pipe, finishes the high-efficiency casing scale removal instrument of scale removal by oil pipe deadweight and the inertia of transferring tubing string.
High-efficiency casing scale removal instrument described in the utility model is made up of top connection, tool body, scale removal blade, lower contact; Tool body is a conical rod that has tapering from top to bottom, the scale removal blade is spiral special steel blade, the blade outward flange complements each other, four groups of set of blades are curled up on conical rod, every group of blade formed by dextrorotation blade and derotation blade unit, earlier positive supination derotation, top connection and lower contact are positioned at the conical rod two ends.
The operating principle of this sleeve pipe scale removal instrument: below oil pipe or drilling rod, directly connect the scale removal instrument, G.I.H under the drive of oil pipe or drilling rod, nearer as scale removal segment distance well head, the tubing string load is light in the well, need upper lifting pipe post 1-3 rice during scale removal, when transferring, the scale removal instrument utilizes the cutting of inertia force realization to dirty matter, reaches the scale removal purpose; If vertical well depth surpasses 1300-1500 rice, the scale removal instrument just can reach the scale removal purpose as motive power by full well oil pipe or drilling rod weight.
Do not need to use special chemical agent owing to use this device to carry out the scale removal work progress, pit shaft inner sleeve and oil pipe are not had corrosiveness; Only when construction finishes, use the way of sand washing to open a hole at the end, reduce pump tank car labour cost; Use common light maintenance implement construction, and the scale removal and the end that opens a hole, use a drill string to finish, and greatly reduced operating cost.Reached this instrument high-quality, at a high speed, the purpose of design of efficient construction.
Advantage of the present utility model is:
1, this sleeve pipe scale removal instrument can produce different models according to the sleeve pipe specification, and the construction ground installation requires simple, and general light maintenance implement can satisfy construction requirement.
2, this sleeve pipe scale removal instrument adopts spiral special steel scale removal blade, and the blade outward flange complements each other, after the scale removal in instrument maximum outside diameter scope no dirty matter residual, scale removal is thorough.
3, this sleeve pipe scale removal instrument scale removal blade adopts screw type, having dwindled with dirty matter contact point, has improved scale removal efficient.Scale removal efficient generally 10-100 rice/hour.
4, every group of scale removal blade of this sleeve pipe scale removal instrument divides dextrorotation and derotation combination, and earlier positive supination derotation produces the back-off effect when preventing work.
5, the tool body of this sleeve pipe scale removal instrument adopts tapered configuration from top to bottom, reduces scale removal blade projecting height, improves the instrument bulk strength, increases the service life.
6, this sleeve pipe scale removal instrument has been considered the minimum discharge area between instrument and sleeve pipe, can be used as the integrated instrument of drifting sand washing and uses.
Description of drawings
Fig. 1 high-efficiency casing scale removal tool construction schematic diagram
Wherein: 1, top connection 2, tool body 3, scale removal blade 4, lower contact 5, one-level set of blades 6, secondary set of blades 7, three grades of set of blades 8, level Four set of blades
The specific embodiment
With reference to the accompanying drawings high-efficiency casing scale removal tool construction described in the utility model is illustrated below.
High-efficiency casing scale removal instrument described in the utility model is made up of top connection 1, tool body 2, scale removal blade 3, lower contact 4; Tool body 2 is a conical rod that has tapering from top to bottom, scale removal blade 3 is spiral special steel blade, constitute by one-level set of blades 5, secondary set of blades 6, three grades of set of blades 7,8 four groups of dextrorotation blades of level Four set of blades and derotation set of blades, scale removal blade 3 curls up on conical rod, and top connection 1 and lower contact 4 are positioned at the conical rod two ends.The maximum blade external diameter of this instrument is littler more than 3 millimeters than casing inner diameter, consider to produce in the scale removal process the broken end and the fragment of dirty matter, scale removal will clear these dirty matter after finishing, (broken dirty end and dirty piece can stop up near wellbore formation at well, can reduce pump efficiency to oil well, the serious pump that also can cause is malfunctioning), therefore, in the instrument development process, considered the minimum discharge area between instrument and sleeve pipe, in scale removal behind the precalculated position, can be directly method by sand washing open a hole at the end, do not need single flight sand washing tubing string again.
Claims (1)
1, a kind of high-efficiency casing scale removal instrument, form by top connection, tool body, scale removal blade, lower contact, it is characterized in that: tool body is a conical rod that has tapering from top to bottom, the scale removal blade is spiral special steel blade, the blade outward flange complements each other, and four groups of set of blades are curled up on conical rod, and every group of blade formed by dextrorotation blade and derotation blade unit, earlier positive supination derotation, top connection and lower contact are positioned at the conical rod two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201872385U CN201144670Y (en) | 2007-12-19 | 2007-12-19 | Highly effective scaling tool for sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201872385U CN201144670Y (en) | 2007-12-19 | 2007-12-19 | Highly effective scaling tool for sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144670Y true CN201144670Y (en) | 2008-11-05 |
Family
ID=40081546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201872385U Expired - Fee Related CN201144670Y (en) | 2007-12-19 | 2007-12-19 | Highly effective scaling tool for sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201144670Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2513627C1 (en) * | 2012-10-17 | 2014-04-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Procedure for oilfield pipeline repair |
| CN104632083A (en) * | 2015-02-03 | 2015-05-20 | 成都大漠石油机械有限公司 | Drill stem inner wall cleaner facilitating fixing of friction part |
| CN109201659A (en) * | 2018-10-15 | 2019-01-15 | 李颖 | A kind of round tube inner wall descaling tool and stain eliminating technology |
| CN110043224A (en) * | 2018-01-16 | 2019-07-23 | 中国石油天然气股份有限公司 | Oil well shaft blockage removing method |
-
2007
- 2007-12-19 CN CNU2007201872385U patent/CN201144670Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2513627C1 (en) * | 2012-10-17 | 2014-04-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Procedure for oilfield pipeline repair |
| CN104632083A (en) * | 2015-02-03 | 2015-05-20 | 成都大漠石油机械有限公司 | Drill stem inner wall cleaner facilitating fixing of friction part |
| CN104632083B (en) * | 2015-02-03 | 2017-10-27 | 成都大漠石油机械有限公司 | The drilling rod inner-wall cleaner for being easy to friction means to fix |
| CN110043224A (en) * | 2018-01-16 | 2019-07-23 | 中国石油天然气股份有限公司 | Oil well shaft blockage removing method |
| CN110043224B (en) * | 2018-01-16 | 2021-08-03 | 中国石油天然气股份有限公司 | Oil well shaft blockage removing method |
| CN109201659A (en) * | 2018-10-15 | 2019-01-15 | 李颖 | A kind of round tube inner wall descaling tool and stain eliminating technology |
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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: 20081105 Termination date: 20141219 |
|
| EXPY | Termination of patent right or utility model |