CN201024981Y - Physical leakage and lockage prevention under-well toll with a driller - Google Patents
Physical leakage and lockage prevention under-well toll with a driller Download PDFInfo
- Publication number
- CN201024981Y CN201024981Y CNU200720148879XU CN200720148879U CN201024981Y CN 201024981 Y CN201024981 Y CN 201024981Y CN U200720148879X U CNU200720148879X U CN U200720148879XU CN 200720148879 U CN200720148879 U CN 200720148879U CN 201024981 Y CN201024981 Y CN 201024981Y
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- CN
- China
- Prior art keywords
- well
- wall
- leakage
- leak
- digging
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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 relates to an under-well instrument used for preventing the leakage and blockage of the well with physical method during the drilling in the oil well digging, including an instrument body(1), side spray nozzles(2) and flow diverting pipes(3). The instrument body(1) is provided with the flow diving pipes(3) with the ends provided with the side spray nozzles(2). When the liquid during the oil well digging enters the instrument body(1), about 18 percent of the flow is diverted into the side spray nozzles(2) through the flow diving holes(3) with the number ranging from one to four. Through the action of the attacking pressure on the wall of the well by the hydraulic energy of the rotatablely sprayed water, the materials mixed into the well-digging liquid and preventing the leakage and blockage of the well during the drilling are target-oriented pushed with a strong force into the holes, clearances and gaps( including the guiding gaps) in the rock of the well wall. Hereby, the utility model effectively improves the sealing ability of the leaking well wall, thus greatly increasing the bearing ability of the well wall and the safety of the density of the well digging liquid and forming a mud cake with a certain strength on the well wall, with the mud cake being the so-called artificial well wall.
Description
Technical field:
The utility model is used for petroleum drilling operation, specifically, is that a kind of physics method is with boring the leak-proof leak-stopping downhole tool.
Background technology:
Along with the needs of oil-gas exploration and development, deep-well, complicated well, special well quantity rise year by year, and the leakage problem of this class well in drilling process is the very thorny difficult problem of drilling engineering circle for a long time, fail both at home and abroad so far to be solved effectively always.Handle leakage and wasted great amount of manpower, financial resources and time, serious leakage can cause cave-in, bit freezing and gas blowout accident, even a bite well is scrapped, and causes enormous economic loss.All there is leakage problem in various degree in each oil field of China, and particularly deep bores, hole and the crack property leakage problem of the western oil gas field of China are more outstanding.The piedmont tectonic belts in Tarim Basin, accurate Ge Er basin, soil are breathed out the Xifeng area in the knob in oil field, long celebrating oil field and the area, east, river in Sichuan etc., show according to statistics, the time of handling the leakage loss accounts for about 6% of this well operations time, and serious leakage is up to about 20%.
The leakage type mainly is divided into three kinds of hole (hole) permeability loss, fractured leakage and cave leakages.The hole permeability loss particularly leakage of crack property long well section more is difficult to timely processing.In recent years, very fast in leak-proof leak-stopping Study on Technology and application facet development both at home and abroad, developed multiple formulations, developed the drilling fluid system of multiple leak-proof leak-stopping, one of them is exactly that the bridge blinding technology has obtained using more widely, the 2nd, the gelling blocking technology, but inapplicable for reservoir, be difficult to remove.These methods do not solve the root problem of leakage, mainly are that bearing capacity is poor.Comprise forward and reverse, reason is that sealing agent organically is fused into one with the borehole wall, does not reach all-pervasive plugging action, lacks the active force that stretches into the borehole wall, mainly is based on leak stopping.
Summary of the invention:
The purpose of this utility model is to provide a kind of physics method with boring the leak-proof leak-stopping downhole tool, utilize this instrument with the flow diverter pole fraction that pumps into, adopt the direct directive leakage of rotating jet stratum, cooperate suitable drilling fluid system, form " the artificial borehole wall " for the lost-circulation zone borehole wall, bore a difficult problem of opening and leaking after effectively solving the quiet stifled or cement paste shutoff of chemistry.
The utility model is achieved in that and comprises body of tool 1, side nozzle 2, isocon 3 that have isocon 3 on the body of tool 1, the two ends of isocon 3 are provided with side nozzle 2.
The utility model also adopts following technical scheme:
Isocon 3 is provided with tap hole.
The number of the tap hole on the isocon 3 〉=1.
The integral body of this instrument is axially symmetric structure.
Side nozzle 2 setting angles are between 0～6 °.
Advantage of the present utility model is: after the drilling fluid fluid enters body of tool 1, by 1～4 tap hole about 18% flow is diverted to two side nozzles 2, utilize of the surge effect of the hydraulic energy of rotating jet to the borehole wall, sneak in the drilling fluid with boring powerful targetedly hole, hole, crack and the crack (comprising the inductivity crack) of pushing miss rock of borehole to of leak-proof leak-stopping material.Improve the shut-off capacity of the leakage borehole wall effectively, thereby increase the bearing capacity of the borehole wall and the security window of drilling fluid density, form mud cake at the borehole wall, i.e. so-called " the artificial borehole wall " with certain intensity.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
As shown in drawings, this downhole tool is an axially symmetric structure, and the upper end of body of tool 1 is connected with drill collar, and the lower end of body of tool 1 is connected with drill bit; Have isocon 3 in the body of tool 1,1～4 tap hole is arranged on the isocon 3, tap hole is directly controlled the flow of approaching side nozzle 2, side nozzle 2 jets at isocon 3 two ends are directly injected the leakage stratum borehole wall, utilize the surge of the hydraulic energy of side nozzle 2 jets to the borehole wall, it is sneaked into and pushes hole, hole, crack and the crack (comprising the inductivity crack) of rock of borehole targetedly to boring the leak-proof leak-stopping material in the drilling fluid.Improve the shut-off capacity of the leakage borehole wall effectively, thereby increase the bearing capacity of the borehole wall and the security window of drilling fluid density, form the mud cake with certain intensity at the borehole wall, i.e. so-called " the artificial borehole wall " reaches with boring the leak-proof leak-stopping purpose.
Isocon 3 is changeable types, and side nozzle 2 is column type nozzles (rotating jet, diffusion jet) of changeable type, and side nozzle 2 setting angles change in 0～6 °.
This instrument has with the double action of boring leak-proof leak-stopping and reservoir protection.
Claims (5)
1. the physics method comprises body of tool (1), side nozzle (2), isocon (3) with boring the leak-proof leak-stopping downhole tool, and it is characterized in that: have isocon (3) on the body of tool (1), the two ends of isocon (3) are provided with side nozzle (2).
2. physics method according to claim 1 is with boring the leak-proof leak-stopping downhole tool, and it is characterized in that: isocon (3) is provided with tap hole.
3. physics method according to claim 2 is characterized in that: the number of tap hole 〉=1 with boring the leak-proof leak-stopping downhole tool.
4. physics method according to claim 1 is with boring the leak-proof leak-stopping downhole tool, and it is characterized in that: the integral body of this instrument is axially symmetric structure.
5. physics method according to claim 1 is with boring the leak-proof leak-stopping downhole tool, and it is characterized in that: side nozzle (2) setting angle is between 0～6 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720148879XU CN201024981Y (en) | 2007-04-24 | 2007-04-24 | Physical leakage and lockage prevention under-well toll with a driller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720148879XU CN201024981Y (en) | 2007-04-24 | 2007-04-24 | Physical leakage and lockage prevention under-well toll with a driller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024981Y true CN201024981Y (en) | 2008-02-20 |
Family
ID=39098839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720148879XU Expired - Lifetime CN201024981Y (en) | 2007-04-24 | 2007-04-24 | Physical leakage and lockage prevention under-well toll with a driller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024981Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103003519A (en) * | 2010-05-28 | 2013-03-27 | 康纳科菲利普斯公司 | Enhanced smear effect fracture plugging process for drilling systems |
| CN107102099A (en) * | 2017-01-11 | 2017-08-29 | 西南石油大学 | With brill leak-proof leak-stopping experimental rig and method |
| CN105971555B (en) * | 2016-05-05 | 2019-03-29 | 中国石油集团渤海钻探工程有限公司 | A kind of leak stopping cylinder and plugging slurry joint blocking method for fractured reservoir |
-
2007
- 2007-04-24 CN CNU200720148879XU patent/CN201024981Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103003519A (en) * | 2010-05-28 | 2013-03-27 | 康纳科菲利普斯公司 | Enhanced smear effect fracture plugging process for drilling systems |
| CN105971555B (en) * | 2016-05-05 | 2019-03-29 | 中国石油集团渤海钻探工程有限公司 | A kind of leak stopping cylinder and plugging slurry joint blocking method for fractured reservoir |
| CN107102099A (en) * | 2017-01-11 | 2017-08-29 | 西南石油大学 | With brill leak-proof leak-stopping experimental rig and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080220 |
|
| CX01 | Expiry of patent term |