CN204371108U - Drilling rig - Google Patents
Drilling rig Download PDFInfo
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- CN204371108U CN204371108U CN201420779978.8U CN201420779978U CN204371108U CN 204371108 U CN204371108 U CN 204371108U CN 201420779978 U CN201420779978 U CN 201420779978U CN 204371108 U CN204371108 U CN 204371108U
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- runner
- cementing fluid
- drilling
- fluid runner
- cementing
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Abstract
The utility model relates to a kind of drilling rig, it comprises body, be arranged on the bit matrix of a body end, the cutting teeth be arranged on bit matrix, body has the drilling fluid runner for inputting drilling fluid, body is also provided with isolated with drilling fluid runner and for importing cementing fluid cementing fluid runner, the sidewall of body is also provided with the outlet be connected with cementing fluid runner.Body has an axis direction, and cementing fluid runner has the first flow extended along body axis direction, and bit matrix offers the bit port be connected with cementing fluid runner, the diameter of first flow is less than the diameter of drilling fluid runner.The utility model can the gap on effective shutoff fracture development stratum by spraying cementing fluid, prevents from missing; Strengthen easily cave in, the stability of interval astatically, Reinforcing Shaft, prevents cave-in; After having crept into, can also de-plugging agent be injected, recover the permeability of the borehole wall.
Description
Technical field
The utility model relates to a kind of oil-gas exploration and development field, particularly relates to a kind of drilling rig.
Background technology
In drilling process, often need the ' Safe Density Windows considering drilling fluid.The ' Safe Density Windows of drilling fluid is the density range of drilling fluid.When the density of drilling fluid exceeds the ' Safe Density Windows of drilling fluid, often produce leakage phenomenon; When ' Safe Density Windows lower than drilling fluid of the density of drilling fluid, often produce cave-in and fall block phenomenon.For the area that some geological conditions are comparatively complicated, especially deep formation mostly is carbonate formation, the area that seam hole is comparatively grown, and the ' Safe Density Windows of drilling fluid is narrower.
In order to expand the ' Safe Density Windows of drilling fluid, borehole wall reinforcing technique can be adopted at present.Conventional borehole wall reinforcing technique normally drills the well section that challenge easily occurs by conventional drilling liquid system, then the reinforcement material such as infusion sealing agent, cement paste or special leakage-stop liquid is reinforced well section, improve the ' Safe Density Windows having bored stratum, ensure the safety drilling of understratum.
But be through repeatedly Practical experiments to prove, adopt borehole wall reinforcing technique of the prior art, still there is the problem of cave-in or leakage.
Utility model content
Existing borehole wall reinforcing technique can only be carried out afterwards drilling Holes of Complicated Wells section, and it cannot carry out in real time along with drilling process.Thus in drilling process or drilling well complete before during this period of time in, just likely there is the accident such as cave-in or leakage.
In order to overcome the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of drilling rig, and it can be reinforced in time to the borehole wall.
For achieving the above object, the technical solution of the utility model is:
A kind of drilling rig, it is characterized in that, it comprises body, is arranged on the bit matrix of a described body end, the cutting teeth be arranged on described bit matrix, described body has the drilling fluid runner for inputting drilling fluid, described body is also provided with isolated with described drilling fluid runner and for importing cementing fluid cementing fluid runner, the sidewall of described body is also provided with the outlet be connected with described cementing fluid runner.
Preferably, described cementing fluid runner is also provided with the chamber holding cementing fluid, described chamber is connected with described outlet.
Preferably, described body has an axis direction, described cementing fluid runner has the first flow extended along described body axis direction, and described bit matrix offers the bit port be connected with described cementing fluid runner, the diameter of described first flow is less than the diameter of described drilling fluid runner.
Preferably, described cementing fluid runner also comprises the second runner be connected with described first flow, and described first flow and described second runner are the angle that is not 0 ° or 180 °.
Preferably, described cementing fluid runner also comprises the chamber be connected with described second runner, and described second runner becomes large from first flow gradually to chamber.
Preferably, ringwise, described outlet is multiple to described chamber, described multiple outlet being circumferentially arranged along described body.
Preferably, described outlet is positioned at the sagittal plane residing for described chamber.
Preferably, described outlet is provided with the nozzle be made up of elastomeric material.
Preferably, the opening of described drilling fluid runner and described cementing fluid runner is positioned at described body one end away from bit matrix.
Preferably, described nozzle is pressure nozzle, is provided with elastomeric material between described nozzle and described body, and described nozzle has chamfered section away from one end of described body.
The utility model adopts said structure, has the following advantages:
The utility model can the gap on effective shutoff fracture development stratum by spraying cementing fluid, prevents from missing; Strengthen easily cave in, the stability of interval astatically, Reinforcing Shaft, prevents cave-in; After having crept into, can also de-plugging agent be injected, recover the permeability of the borehole wall.
Be can be implemented in drilling process by the utility model and spray cementing fluid in real time, thus can reinforce in time the borehole wall, efficiently solve conventional borehole wall reinforcing technique and can only drill the Holes of Complicated Wells section post-reinforcing borehole wall, in helpless present situations of challenge such as the leakage drilled in Holes of Complicated Wells section process and cave-ins.
Accompanying drawing explanation
Accompanying drawing described here only for task of explanation, and is not intended to limit the utility model scope of disclosure by any way.In addition, the shape of each parts in figure and proportional sizes etc. are only schematic, for helping understanding of the present utility model, are not the shape and the proportional sizes that specifically limit each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shape and proportional sizes to implement the utility model as the case may be.
Fig. 1 shows the structural representation of drilling rig in the application.
Fig. 2 show A-A in Fig. 1 to cross section structure schematic diagram.
Fig. 3 show B-B in Fig. 1 to cross section structure schematic diagram.
The Reference numeral of above accompanying drawing: 1, drilling fluid runner; 2, nipple; 3, body; 4, chamber; 5, nozzle; 6, gauge; 7, bit matrix; 8, cutting teeth; 9, cementing fluid runner.
Detailed description of the invention
By reference to the accompanying drawings with the description of the utility model detailed description of the invention, can clearly understand details of the present utility model.But detailed description of the invention of the present utility model described here, only for explaining the purpose of this utility model, and can not to be understood as by any way be to restriction of the present utility model.Under instruction of the present utility model, technician can conceive based on distortion possible arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
Referring to figs. 1 through shown in one of 3, the utility model discloses a kind of drilling rig, it comprises body 3, be arranged on the bit matrix 7 of described body 3 one ends, the cutting teeth 8 be arranged on described bit matrix 7, described body 3 has the drilling fluid runner 1 for inputting drilling fluid, described body 3 is also provided with isolated with described drilling fluid runner 1 and for importing cementing fluid cementing fluid runner 9, the sidewall of described body 3 is also provided with the outlet be connected with described cementing fluid runner 9.
With reference to shown in Fig. 1, body 3 is substantially in becoming large cylindrical shape gradually from top to bottom, and it has the two ends along himself Axis Extension, and in FIG, the axis being parallel of body 3 is in the length direction of paper, and body 3 has upper end and lower end.The upper end of body 3 can be provided with nipple 2, to realize the connection with other mechanisms.Bit matrix 7 is arranged on the lower end of body 3.Bit matrix 7 can rotate around axis opposing body 3, thus drives cutting teeth 8 pairs of boreholes wall to cut.Gauge 6 can be provided with, to limit the displacement of bit matrix 7 in motion process between body 3 and bit matrix 7.
With reference to shown in Fig. 1 and Fig. 3, body 3 is provided with drilling fluid runner 1, the upper end of drilling fluid runner 1 can opening to input drilling fluid, the lower end of drilling fluid runner 1 can be connected with the bit port be opened on bit matrix 7.Bit port can be rinsed cutting teeth 8 by drilling fluid in drilling process.Drilling fluid can be clear water, mud, free clay phase flushing liquor, emulsion, foam and compressed air etc.Cutting teeth 8 is embedded on bit matrix 7, to cut the borehole wall.
With reference to shown in Fig. 1 and Fig. 3, body 3 is also provided with the cementing fluid runner 9 that can import cementing fluid.Cementing fluid runner 9 is isolated with drilling fluid runner 1, to ensure that cementing fluid and drilling fluid can not mix.The upper end of cementing fluid runner 9 can opening so that import cementing fluid.The lower end of cementing fluid runner 9 can be connected with the outlet be arranged on body 3 sidewall, to make cementing fluid from exporting derivation.The cementing fluid flowed out from outlet forms plugged zone on the borehole wall.Cementing fluid can adopt the borehole wall reinforcement material etc. in such as Chinese patent 201410043437.3, and protection domain of the present utility model is not limited to type or the composition of cementing fluid.
Drilling rig in the utility model can spray reinforcement material with brill to the borehole wall in drilling process, thus formation plugged zone blocks wellbore crack; Make unstable rock around borehole cemented together, enhance the stability of the borehole wall, prevent the challenges such as leakage in Holes of Complicated Wells section drilling process and well slough.
Shown in seeing figures.1.and.2, in one preferred embodiment, cementing fluid runner 9 is also provided with the chamber 4 holding cementing fluid, described chamber 4 is connected with described outlet.Outlet can be positioned at the sagittal plane residing for described chamber 4.Chamber 4 can cushion the cementing fluid entered from cementing fluid runner 9 and put aside, to control the ejection pressure of cementing fluid and flow.More preferably, chamber 4 can in the centrosymmetric annular in circumference direction around body 3.Circumferentially can be provided with multiple outlet in this annular, multiple outlet evenly can be arranged along the circumference of described body 3, to carry out well cementation sealing to the inwall of the borehole wall simultaneously.Preferably, in the present embodiment, outlet is six.
Shown in seeing figures.1.and.2, in one preferred embodiment, outlet can be provided with nozzle 5.Each nozzle 5 can extend along the radial direction of body 3.Nozzle 5 can be made up of elastomeric material, and elastomeric material can be composited by rubber and steel spring.Nozzle 5 can also have chamfered section, to avoid situations such as destroying the borehole wall because of nozzle 5 scratch or cause that drilling tool is hampered, makes it creep into and can pass through well smoothly in the process that makes a trip.Nozzle 5 can be pressure nozzle, is designed to by nozzle 5 structure controlling its folding such as pressure valve according to cementing fluid head of liquid.When not needing to inject cementing fluid reinforcing, only need reduce its pressure, the closed of nozzle 5 can be ensured, now not carry out injection cementing fluid and reinforce operation.Operationally, drilling fluid enters bit port by drilling fluid runner 1, maintains and creeps into demand normally.Be drilled into intricately interval need inject cementing fluid Reinforcing Shaft time, inject cementing fluid, cementing fluid enters well cementation sap cavity by cementing fluid runner 9, and is delivered to all nozzles 5, pressurizes to cementing fluid tubing string, and nozzle 5 is opened, to the borehole wall spray cementing fluid.
With reference to shown in Fig. 1, in one preferred embodiment, cementing fluid runner 9 has the first flow extended along described body 3 axis direction, described bit matrix 7 offers the bit port be connected with described cementing fluid runner 9, the diameter of described first flow is less than the diameter of described drilling fluid runner 1.Cementing fluid runner 9 also comprises the second runner be connected with described first flow, and described first flow and described second runner are the angle that is not 0 ° or 180 °.Described cementing fluid runner 9 also comprises the chamber 4 be connected with described second runner, and described second runner becomes large from first flow gradually to chamber 4.Under pressure, cementing fluid can enter in cementing fluid runner 9 fast from first flow.When cementing fluid flow to the intersection of first flow and the second runner, cementing fluid produces the transformation in direction in the corner of first flow and the second runner, thus reduces the speed of cementing fluid.Cementing fluid can be entered in chamber 4 by the second runner, and accumulates in chamber 4, discharges.Drilling fluid requires high-pressure large-displacement, and cementing fluid is high-pressure small-displacement, and drilling fluid runner 1 diameter is greater than the diameter of cementing fluid runner 9, and drilling fluid runner 1 diameter is 2 times of the diameter of cementing fluid runner 9 in the present embodiment.
The utility model adopts said structure, has the following advantages:
The utility model can the gap on effective shutoff fracture development stratum by spraying cementing fluid, prevents from missing; Strengthen easily cave in, the stability of interval astatically, Reinforcing Shaft, prevents cave-in; After having crept into, can also de-plugging agent be injected, recover the permeability of the borehole wall.
Be can be implemented in drilling process by the utility model and spray cementing fluid in real time, thus can reinforce in time the borehole wall, efficiently solve conventional borehole wall reinforcing technique and can only drill the Holes of Complicated Wells section post-reinforcing borehole wall, in helpless present situations of challenge such as the leakage drilled in Holes of Complicated Wells section process and cave-ins.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (10)
1. a drilling rig, it is characterized in that, it comprises body, is arranged on the bit matrix of a described body end, the cutting teeth be arranged on described bit matrix, described body has the drilling fluid runner for inputting drilling fluid, described body is also provided with isolated with described drilling fluid runner and for importing cementing fluid cementing fluid runner, the sidewall of described body is also provided with the outlet be connected with described cementing fluid runner.
2. drilling rig according to claim 1, is characterized in that: described cementing fluid runner is also provided with the chamber holding cementing fluid, described chamber is connected with described outlet.
3. drilling rig according to claim 1, it is characterized in that: described body has an axis direction, described cementing fluid runner has the first flow extended along described body axis direction, described bit matrix offers the bit port be connected with described cementing fluid runner, the diameter of described first flow is less than the diameter of described drilling fluid runner.
4. drilling rig according to claim 3, is characterized in that: described cementing fluid runner also comprises the second runner be connected with described first flow, and described first flow and described second runner are the angle that is not 0 ° or 180 °.
5. drilling rig according to claim 4, is characterized in that: described cementing fluid runner also comprises the chamber be connected with described second runner, and described second runner becomes large from first flow gradually to chamber.
6. the drilling rig according to claim 2 or 5, is characterized in that: ringwise, described outlet is multiple to described chamber, described multiple outlet being circumferentially arranged along described body.
7. drilling rig according to claim 6, is characterized in that: described outlet is positioned at the sagittal plane residing for described chamber.
8. drilling rig according to claim 1, is characterized in that: described outlet is provided with the nozzle be made up of elastomeric material.
9. drilling rig according to claim 1, is characterized in that: the opening of described drilling fluid runner and described cementing fluid runner is positioned at described body one end away from bit matrix.
10. drilling rig according to claim 1, is characterized in that: described nozzle is pressure nozzle, is provided with elastomeric material between described nozzle and described body, and described nozzle has chamfered section away from one end of described body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779978.8U CN204371108U (en) | 2014-12-11 | 2014-12-11 | Drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779978.8U CN204371108U (en) | 2014-12-11 | 2014-12-11 | Drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371108U true CN204371108U (en) | 2015-06-03 |
Family
ID=53327338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420779978.8U Withdrawn - After Issue CN204371108U (en) | 2014-12-11 | 2014-12-11 | Drilling rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204371108U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481412A (en) * | 2014-12-11 | 2015-04-01 | 中国石油天然气集团公司 | Well drilling device |
| CN105952416A (en) * | 2016-06-17 | 2016-09-21 | 西南石油大学 | Gas drilling device and method capable of treating formation water production and stabilizing well wall |
-
2014
- 2014-12-11 CN CN201420779978.8U patent/CN204371108U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481412A (en) * | 2014-12-11 | 2015-04-01 | 中国石油天然气集团公司 | Well drilling device |
| CN105952416A (en) * | 2016-06-17 | 2016-09-21 | 西南石油大学 | Gas drilling device and method capable of treating formation water production and stabilizing well wall |
| CN105952416B (en) * | 2016-06-17 | 2018-09-25 | 西南石油大学 | Handle the gas drilling device and boring method of formation water output stabilizing borehole |
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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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150603 Effective date of abandoning: 20170606 |