CN201254966Y - Loose stratum well pipe unfreezing device - Google Patents
Loose stratum well pipe unfreezing device Download PDFInfo
- Publication number
- CN201254966Y CN201254966Y CNU2008200417819U CN200820041781U CN201254966Y CN 201254966 Y CN201254966 Y CN 201254966Y CN U2008200417819 U CNU2008200417819 U CN U2008200417819U CN 200820041781 U CN200820041781 U CN 200820041781U CN 201254966 Y CN201254966 Y CN 201254966Y
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- China
- Prior art keywords
- impact rod
- cuff
- well pipe
- hoop
- impact bar
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- 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 - Lifetime
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Abstract
The utility model discloses a loose stratum well pipe unfreezing device, which consists of a hollow cylindrical impact rod and a cylindrical hoop fixedly connected with the middle part of the impact rod, wherein the central axis of the hoop is parallel to the central axis of the impact rod, and the longitudinal section of the hoop is trapezoidal; an inclined wedge surface with an included angle of 10 degrees to 15 degrees with the central axis is formed at the lower part of the impact rod, a duck mouth hole is formed at the bottom of the impact rod, and a plurality of water spray holes facing one side of the hoop are formed in the middle of the impact rod. The high-pressure water flow sprayed from the duckbill holes at the bottom of the impact rod can return the stuck objects on the outer wall of the well pipe to the ground surface, the middle part of the impact rod faces towards the water spray hole on one side of the hoop, the axis of the impact rod and the horizontal line form different included angles, and the stuck objects between the inner wall of the hoop and the outer wall of the underground well pipe can be washed in different directions, so that the well pipe can be unfreezed more quickly and thoroughly.
Description
Technical field:
The utility model relates to a kind of apparatus for de-clamping loose formation well pipe, specifically a kind of geological drilling that can be used on, oil drilling is in engineering exploration and all kinds of drilling engineering, to Quaternary systems such as the clay of parcel around the downhole well tubulars, the grit device that layer carries out unfreezing that looses.
Background technology:
Geological drilling, oil drilling and other drilling engineerings after creeping into Quaternary system scall (as clay, sand, grit stone etc.), cave in for preventing drilling well, and general adopt is lowered to the seamless steel pipe protection borehole wall more in drilling well.After wellbore construction finishes; need promote up the seamless steel well casing of the protection borehole wall; because well casing G.I.H; the soil layer of well casing outer wall soaked through a period of time can be soft; mud skin, clay, grit that well casing is all caved in wrap up, and are to be difficult to the well casing of tens meters or hundreds of rice is promoted out if well casing peripheral cards addendum is not removed, and underground well casing is not as promoting to the face of land; cause significant wastage, return underground polluting.The way that adopts is to adopt big one-level seamless steel pipe lower drill at present, entangles well casing in the well, expands well with the rig revolution, remove well casing wild card addendum, expand a well casing and promote one, often expanding well steel pipe length needs 20m-30m, when expanding well, the steel pipe rotational resistance is very big, and efficient is the end very, and in expanding the well process, reach 20-30m owing to expand well casing, inside and outside frictional resistance is big, and torsional forces is big, often occur expanding well casing and buried, accidents such as disconnected pipe, breaking of rod bar by clay, gravel card; In addition, after carrying on the well casing of unfreezing, when descending the joint well casing to expand well again, often cause expanding inclined to one side drilling well, cause the underground well casing can't unfreezing and scrap because of can not find the interior well casing head of well.
The utility model content:
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of well casing release device, adopt this device that the well casing of down-hole is carried out unfreezing, need not to adopt long expander drilling tool, also need not rotary drilling bits, and can carry out disposable unfreezing to all well casings of down-hole, accidents such as disconnected pipe, breaking of rod bar can not occur, also can not produce the phenomenon that expands inclined to one side drilling well.
The utility model technical solution problem adopts following technical scheme:
Apparatus for de-clamping loose formation well pipe, described release device is made of the cylindrical shape cuff that the cylindrical impact bar and of a hollow connects firmly at the impact bar middle part, and the axis of cuff is parallel with the axis of impact bar, and the vertical section of described cuff is one trapezoidal; Form a angle in the bottom of impact bar and be 10 °-15 ° cammed surface,, and offer some hole for water sprayings at the middle part of impact bar towards cuff one side in impact bar bottom formation duckbilled hole with its axis.
Design feature of the present utility model also is:
Described cuff is the cylindrical shape cuff of a up/down perforation, and its vertical section is one trapezoidal, is installed with some alloy blades on the circumference of the bottom of cuff at interval.
The axis of described some hole for water sprayings forms different angles with horizon.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
The utility model utilizes the well casing release device of hydraulics and the design of physical mechanics principle, it has overcome the various disadvantages that traditional well casing is promoted unfreezing, it has without rig turns round, need not grow the reaming of reaming pipe bit tool, reduce the reaming resistance, avoid drilling tool in the hole, well casing to fracture, can not find accidents such as underground well casing tube head, can disposable unfreezing to the missile silo pipe, need not the advantages such as loaded down with trivial details operation that pipe is carried in repeatedly reaming.The duckbilled hole of impact bar bottom produces High-Pressure Water, cooperates the steel pipe cuff to impact up and down, gets rid of well casing peripheral cards addendum, to reach the purpose of well casing unfreezing.
The impact bar middle part offers some hole for water sprayings towards cuff one side, the axis of some hole for water sprayings forms different angles with horizon, can wash away the card addendum between cuff inwall and the underground well casing outer wall from different directions, therefore can carry out unfreezing to well casing more up hill and dale sooner.
Description of drawings:
Fig. 1 is a longitudinal section view of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Fig. 4 is user mode figure of the present utility model, and arrow is depicted as the track route of water under high pressure or mud among the figure.
Number in the figure: 1 impact bar, 2 cuffs, 3 cammed surface, 4 duckbilled holes, 5 well casings, 6 alloy blades, 7 center hole for water sprayings, the last hole for water spraying of 7-1, hole for water spraying under the 7-2,8 card addendums.
Below pass through the specific embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
The specific embodiment:
Embodiment: referring to Fig. 1-4, the apparatus for de-clamping loose formation well pipe of present embodiment, the cylindrical shape cuff 2 that is connected firmly at the impact bar middle part by the cylindrical impact bar 1 and of a hollow is constituted, cuff 2 is parallel to each other with the axis of impact bar 1, the vertical section of cuff is one trapezoidal, the bottom of cylindrical impact bar forms a cammed surface 3 through forging, and the angle of cammed surface and impact bar axis is 10 °-15 ° is advisable, and impact bar enters in the soil layer with regard to easier impact when work like this.When specifically being provided with, cuff 2 can adopt the trapezoidal steel plate of thick about 10mm to roll and form, also can select for use internal diameter to be slightly larger than the seamless steel pipe of missile silo external diameter of pipe, the upper/lower terminal inclined cut of steel pipe is made, vertically cut steel pipe open otch one again, the middle part that is welded on impact bar gets final product, and is shown in Figure 2, cammed surface 3 forms duckbilled hole 4 with the impact bar body in the bottom of impact bar, and offers some hole for water sprayings towards cuff one side at the middle part of impact bar.
During work, shown in Figure 4, the upper end of impact bar 1 is connected with geologic drilling rod, cuff 2 is enclosed within on the underground well casing 5, impact bar impacts loosening soil layer up and down, and in impact bar, carry water under high pressure, water under high pressure is penetrated and the card addendum 8 (as earth, sandstone etc.) of well casing outer wall is returned to the face of land by the duckbilled hole of impact bar bottom.
Shown in Figure 1, enter soil layer in order to make cuff also can easily impact, on the circumference of the bottom of cuff, be welded with the alloy blade 6 of some square shapes at regular intervals, increased the sharpness and the abrasion resistance of cuff bottom.When specifically being provided with, according to mechanics principle, the plane level of answering at circumference place, cuff bottom is inclined upwardly about 45 ° and is advisable, and the plane at the cuff top circumference place level of answering is advisable for downward-sloping about 20 °.Offer center hole for water spraying 7 at the impact bar middle part towards a side of cuff, its diameter is about 10mm, and the trend in hole is a horizontal direction; Also offering hole for water spraying 7-1 directly over the center hole for water spraying 7, downward-sloping about 45 ° of the axis horizontal of last hole for water spraying, under center hole for water spraying 7, offer hole for water spraying 7-2 down, the axis horizontal of following hole for water spraying is inclined upwardly about 45 °, shown in Figure 4, impact bar inner high voltage water can be along center hole for water spraying 7, last hole for water spraying 7-1 and following hole for water spraying 7-2 wash away the surface of underground well casing 5 with different angles, and the card addendum 8 of its surface attachment returned to the face of land, take out impact bar and cuff at last, just can easily underground well casing 5 be promoted.
Claims (3)
1, apparatus for de-clamping loose formation well pipe, it is characterized in that, described release device is made of the cylindrical shape cuff (2) that the cylindrical impact bar (1) and of a hollow connects firmly at the impact bar middle part, and the axis of cuff is parallel with the axis of impact bar, and the vertical section of described cuff is one trapezoidal; Form a angle in the bottom of impact bar and be 10 °-15 ° cammed surface (3),, and offer some hole for water sprayings at the middle part of impact bar towards cuff one side in formation duckbilled hole (4), impact bar bottom with its axis.
2, apparatus for de-clamping loose formation well pipe according to claim 1 is characterized in that, described cuff (2) is the cylindrical shape cuff of a up/down perforation, and its vertical section is one trapezoidal, is installed with some alloy blades (6) on the circumference of the bottom of cuff at interval.
3, apparatus for de-clamping loose formation well pipe according to claim 1 is characterized in that, the axis of described some hole for water sprayings forms different angles with horizon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200417819U CN201254966Y (en) | 2008-09-03 | 2008-09-03 | Loose stratum well pipe unfreezing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200417819U CN201254966Y (en) | 2008-09-03 | 2008-09-03 | Loose stratum well pipe unfreezing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201254966Y true CN201254966Y (en) | 2009-06-10 |
Family
ID=40738283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200417819U Expired - Lifetime CN201254966Y (en) | 2008-09-03 | 2008-09-03 | Loose stratum well pipe unfreezing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201254966Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353953B (en) * | 2008-09-03 | 2011-07-20 | 安徽省地质矿产勘查局313地质队 | Loose stratum well pipe unfreezing device |
| CN110821510A (en) * | 2019-10-25 | 2020-02-21 | 中国科学院武汉岩土力学研究所 | High-pressure water jet edge cutter and combined rock breaking and trapped-freeing TBM cutter head and method thereof |
-
2008
- 2008-09-03 CN CNU2008200417819U patent/CN201254966Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353953B (en) * | 2008-09-03 | 2011-07-20 | 安徽省地质矿产勘查局313地质队 | Loose stratum well pipe unfreezing device |
| CN110821510A (en) * | 2019-10-25 | 2020-02-21 | 中国科学院武汉岩土力学研究所 | High-pressure water jet edge cutter and combined rock breaking and trapped-freeing TBM cutter head and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090610 Effective date of abandoning: 20080903 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20090610 Effective date of abandoning: 20080903 |