CN201943652U - Dedicated expansion sleeve for borehole wall protection using plastic expansion sleeve - Google Patents
Dedicated expansion sleeve for borehole wall protection using plastic expansion sleeve Download PDFInfo
- Publication number
- CN201943652U CN201943652U CN2011200654426U CN201120065442U CN201943652U CN 201943652 U CN201943652 U CN 201943652U CN 2011200654426 U CN2011200654426 U CN 2011200654426U CN 201120065442 U CN201120065442 U CN 201120065442U CN 201943652 U CN201943652 U CN 201943652U
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- Prior art keywords
- expansion sleeve
- plastic expansion
- plastic
- sleeve pipe
- borehole wall
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Abstract
The utility model relates to a dedicated expansion sleeve for borehole wall protection using a plastic expansion sleeve, and belongs to the field of boring technology for geological exploration. The utility model adopts the technical scheme as follows: the dedicated expansion sleeve comprises a plastic expansion sleeve body (11) and one or more through grooves (12) and the through grooves are formed on the wall of the plastic expansion sleeve body. The high-strength plastic expansion sleeve is adopted to replace the steel sleeve, and an artificial cement hole wall with the plastic expansion sleeve is formed in the hole section required for wall protection, so as to protect against collapse, water leakage, water burst and sloughing and thus to ensure smooth progress of the next boring procedures. The dedicated expansion sleeve overcomes the problems that the steel expansion sleeve requires high tension (10 to 15 tons) and complex expansion tools during expansion, can achieve the effect of rapid, reliable and low-cost borehole wall protection by adopting the high-strength plastic expansion sleeve without the need of the expansion tools, and can complete the boring operation by using only one aperture, thereby greatly increasing the efficiency of the boring operation.
Description
Technical field:
The utility model relates to and a kind ofly carries out the special-purpose expansion sleeve of borehole wall-protection with the plastic expansion sleeve pipe, belongs to used for geological prospecting drilling technology field.
Background technology:
The expansion sleeve breast wall technology is used for the bad ground hole section that geological drilling is holed.Conventional breast wall technology is to adopt mud as flushing liquor; in the drilling process, on borehole wall, form the very thin mud skin of one deck, prevent that the moisture in the flushing liquor from constantly permeating to borehole wall; cause the expansion on stratum or collapse that mud can be protected the porosity permeability formation as flushing liquor.But big or broken formation for the crack, just adopt the way that is lowered to steel sleeve, the broken creviced formation of packing, guarantee normally to creep into, add gun drilling, but the problem of bringing is: next joint steel sleeve bore diameter will dwindle one-level, as meeting bad ground not only but also need one deck sleeve pipe down, one-level is dwindled in boring again, the too little core diameter that bore diameter obtained is also little, too little core diameter can not meet the requirement of geology standard, so boring can not unrestrictedly be lowered to steel sleeve, otherwise boring will be scrapped.The research unit of each probing, production unit is done a little little adjustment on the additive of mud flush liquid, by in mud flush liquid, adding inert material, dilatancy particle etc., stop up little crack and hole, reduce the leakage and the stable hole wall of borehole wall, the purpose of said method all is for better retaining wall, but all can not be fundamentally the effect of borehole wall-protection be significantly increased.The expansion sleeve technology also is in the Preliminary Exploitation stage abroad in recent years, have only trans oil companies of several family such as Weatheford, Enventure carrying out the R﹠D work of this respect, develop expansion steel sleeve and steel sleeve instrument simultaneously, mainly contain anti-bloat tool and two kinds of the rotation bloat tools of drawing of solid-cone, all need powerful pulling force 10-15 ton, and needing complicated bloat tool, geology rock-core borer ability is generally less than 10 tons pulling force, can't adopt the steel expansion sleeve.
The utility model content:
The utility model purpose provides a kind of special-purpose expansion sleeve that carries out borehole wall-protection with the plastic expansion sleeve pipe, adopt highstrenghtpiston's expansion sleeve, need not cooperate bloat tool, can realize fast, reliably, matter borehole wall-protection cheaply, to hole with a bore, improve drilling efficiency, solve the problems referred to above that exist in the background technology.
The technical solution of the utility model is: a kind ofly carry out the special-purpose expansion sleeve of borehole wall-protection with the plastic expansion sleeve pipe, comprise plastic expansion sleeve pipe body and groove, the wall of plastic expansion sleeve pipe body is provided with one or more grooves.
Said groove quantity is arbitrarily, is shaped as rectangle, dove-tail or combination.
The material of said plastic expansion union body is the highstrenghtpiston, and said highstrenghtpiston selects in the prior art intensity high plastics of trying one's best for use.
Said groove is vertical rectangle groove, and the plastic expansion sleeve pipe is provided with the vertical rectangle groove of many rows, and its groove width is 20-25mm length 40-50mm.Increasing along with the plastic expansion casing diameter, row's number of its vertical rectangle groove increases, the thickness of plastic expansion sleeve pipe body increases, and each water flowing sectional area of arranging vertical rectangle groove is the 30-40% of total cross-sectional area, and the distance between the upper and lower rectangle groove is 20mm.
Replace steel sleeve with highstrenghtpiston's expansion sleeve, form an artificial cement hole wall that has the plastic expansion sleeve pipe, can anti-collapse, anti-ly leak, anti-Chung water, anti-lost, guarantee that next step probing work is proceeded in the hole of need retaining wall section.
The beneficial effects of the utility model are: the utility model has overcome needs very high pulling force 10-15 ton when the steel expansion sleeve expands, and the bloat tool problem of the complexity that will join, adopt highstrenghtpiston's expansion sleeve, need not cooperate bloat tool, can realize fast, reliably, matter borehole wall-protection cheaply, to hole with a bore, improve the efficient of probing work greatly.
Description of drawings:
Fig. 1 is a plastic expansion sleeve structure schematic diagram among the utility model embodiment;
Among the figure: plastic expansion sleeve pipe body 11, groove 12.
The specific embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
With reference to accompanying drawing 1, a kind ofly carry out the special-purpose expansion sleeve of borehole wall-protection with the plastic expansion sleeve pipe, comprise plastic expansion sleeve pipe body 11 and groove 12, the wall of plastic expansion sleeve pipe body is provided with one or more grooves.
Said groove quantity is arbitrarily, and arrangement mode also is arbitrarily, is shaped as rectangle, dove-tail or combination.
Groove is vertical rectangle groove in the present embodiment, and the plastic expansion sleeve pipe is provided with the vertical rectangle groove of many rows, and its groove width is 20-25mm length 40-50mm.Increasing along with the plastic expansion casing diameter, row's number of its vertical rectangle groove increases, the thickness of plastic expansion sleeve pipe body increases, and each water flowing sectional area of arranging vertical rectangle groove is the 30-40% of total cross-sectional area, and the distance between the upper and lower rectangle groove is 20mm.
The external diameter of plastic expansion sleeve pipe can be respectively following model as required: ∮ 67-∮ 70mm; ∮ 73-76mm; ∮ 89-∮ 96mm; ∮ 81-88mm; ∮ 108-115mm; ∮ 127-∮ 131mm; ∮ 117-121mm; 146-∮ 152mm; ∮ 134-∮ 140mm.
Use the utility model to carry out borehole wall-protection, method is as follows:
A, by the diameter of being holed, dispose the plastic expansion sleeve pipe;
B, in the bottom of plastic expansion sleeve pipe, the plastic sheath pipe shoe is installed, carry out shutoff, the material of said plastic expansion sleeve pipe, plastic sheath pipe shoe is the highstrenghtpiston, said highstrenghtpiston selects in the prior art intensity high plastics of trying one's best for use;
C, be connected with drill steel on the top of plastic expansion sleeve pipe;
D, use reaming bit, will need the hole section of retaining wall to enlarge the aperture, form the hole wall shoulder;
E, will connect drill steel, plastics pipe shoe and plastic expansion sleeve pipe and be lowered to and need the hole of retaining wall section, and the plastics pipe shoe is sitting on the shoulder of hole wall securely;
F, with rig feed oil cylinder pressurization, plastic bushing is longitudinally expanded, be expanded to the hole wall that reaming bit has enlarged;
G, with slush pump cement paste is pumped in the plastic expansion sleeve pipe along drilling rod, cement paste flows into the hole section that needs retaining wall by the plastic expansion sleeve pipe, and is penetrated in the crack of hole wall and goes, and cement paste, hole wall and plastic expansion sleeve pipe three are fixed together;
H, etc. the cement solidifies, bored cement plug after, need retaining wall hole Duan Chu, forms the artificial hole wall of a band plastic expansion sleeve pipe, can anti-collapse, anti-ly leak, prevent Chung water, anti-lost, finish borehole wall-protection.
Said is 2-5Mp with slush pump along the pressure of drilling rod pump cement paste, and the pressure that rig feeds oil cylinder is the 1-5 ton.
Claims (4)
1. one kind is carried out the special-purpose expansion sleeve of borehole wall-protection with the plastic expansion sleeve pipe, it is characterized in that comprising plastic expansion sleeve pipe body (11) and groove (12), and the wall of plastic expansion sleeve pipe body is provided with one or more grooves.
2. carry out the special-purpose expansion sleeve of borehole wall-protection according to the described usefulness plastic expansion sleeve pipe of claim 1, it is characterized in that said groove is shaped as rectangle, dove-tail or combination.
3. carry out the special-purpose expansion sleeve of borehole wall-protection according to the described usefulness plastic expansion sleeve pipe of claim 2, it is characterized in that groove is vertical rectangle groove, the plastic expansion sleeve pipe is provided with the vertical rectangle groove of many rows, and its groove width is 20-25mm length 40-50mm.
4. carry out the special-purpose expansion sleeve of borehole wall-protection according to the described usefulness plastic expansion sleeve pipe of claim 3, it is characterized in that each water flowing sectional area of arranging vertical rectangle groove is the 30-40% of total cross-sectional area, the distance between the upper and lower rectangle groove is 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200654426U CN201943652U (en) | 2011-03-14 | 2011-03-14 | Dedicated expansion sleeve for borehole wall protection using plastic expansion sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200654426U CN201943652U (en) | 2011-03-14 | 2011-03-14 | Dedicated expansion sleeve for borehole wall protection using plastic expansion sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201943652U true CN201943652U (en) | 2011-08-24 |
Family
ID=44471001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200654426U Expired - Fee Related CN201943652U (en) | 2011-03-14 | 2011-03-14 | Dedicated expansion sleeve for borehole wall protection using plastic expansion sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201943652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174881A (en) * | 2011-03-14 | 2011-09-07 | 唐山市金石超硬材料有限公司 | Method for drilling holes and protecting walls by plastic expansion casing pipe and special expansion casing pipe |
-
2011
- 2011-03-14 CN CN2011200654426U patent/CN201943652U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174881A (en) * | 2011-03-14 | 2011-09-07 | 唐山市金石超硬材料有限公司 | Method for drilling holes and protecting walls by plastic expansion casing pipe and special expansion casing pipe |
| CN102174881B (en) * | 2011-03-14 | 2013-04-03 | 唐山市金石超硬材料有限公司 | Method for drilling holes and protecting walls by plastic expansion casing pipe and special expansion casing pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20140314 |