CN212514156U - Pressure device for simulating drilling fluid invading range of rock in ore bed in large-depth drilling hole - Google Patents
Pressure device for simulating drilling fluid invading range of rock in ore bed in large-depth drilling hole Download PDFInfo
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- CN212514156U CN212514156U CN201922373212.5U CN201922373212U CN212514156U CN 212514156 U CN212514156 U CN 212514156U CN 201922373212 U CN201922373212 U CN 201922373212U CN 212514156 U CN212514156 U CN 212514156U
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Abstract
This novel pressure device that belongs to pressure device, concretely relates to simulation drilling fluid invades the pressure device of seam rock scope in big degree of depth drilling. The utility model provides a pressure device of simulation drilling fluid invasion mineral bed rock scope in big degree of depth drilling, includes a jar body, sets up the ore bed subassembly in jar body, and jar body top sets up the top cap subassembly, and jar side wall sets up measuring component. This neotype effect is: the application of the pressure device can simulate the range of the drilling fluid invading the rock of the ore bed under different depths.
Description
Technical Field
This novel pressure device that belongs to pressure device, concretely relates to simulation drilling fluid invades the pressure device of seam rock scope in big degree of depth drilling.
Background
1. According to the existing gravel-filling type drilling construction process, vegetable gum and bentonite are mainly used as drilling fluid; the drilling mode belongs to positive pressure drilling, and the drilling fluid permeates into an ore bed under the action of pressure, pollutes and blocks a pumping and injection hole filter, a hole wall and a near wellbore zone, and reduces the permeability of the ore bed.
2. According to the current hole washing process, after a drilled hole is formed, hole washing by an air compressor or hole washing by a piston can be carried out, the two hole washing modes find that water is cleaned by sand, water sample analysis finds that ions same with drilling fluid are greatly increased, and this shows that the drilling fluid in an ore bed is not thoroughly cleaned, so that the pumping and injecting fluid quantity is influenced after a new mining area is put into use.
SUMMERY OF THE UTILITY MODEL
This is novel to prior art's defect, provides a pressure device of simulation drilling fluid invasion mineral seam rock scope in big deep hole drilling.
This is novel to realize like this: the utility model provides a pressure device of simulation drilling fluid invasion mineral bed rock scope in big degree of depth drilling, includes a jar body, sets up the ore bed subassembly in jar body, and jar body top sets up the top cap subassembly, and jar side wall sets up measuring component.
The pressure device for simulating the range of the drilling fluid invading the rock of the ore bed in the deep drilling hole comprises the ore bed component, wherein the ore bed component comprises a rock core, slurry and a rock core support, the rock core is arranged at the center, the slurry is arranged at the periphery of the rock core, and the rock core support is arranged below the rock core.
The pressure device for simulating the drilling fluid invading range of the rock of the mineral seam in the large-depth drilling hole comprises a tank cap arranged at the uppermost end, a piston arranged above mud and an oil cylinder arranged between the tank cap and the piston.
The pressure device for simulating the invasion of the drilling fluid into the rock range of the ore bed in the deep drilling hole is characterized in that the oil cylinder is communicated with an external manual hydraulic oil pump through a high-pressure oil pipe.
The pressure device for simulating the invasion of the drilling fluid into the rock range of the ore bed in the large-depth drilling hole is characterized in that the measuring assembly comprises an exhaust valve and a pressure gauge.
A pressure device for simulating the invasion of drilling fluid into the rock range of a mineral seam in a large-depth drill hole as described above, wherein a lower discharge valve is arranged below a tank body.
The pressure device for simulating the invasion of the drilling fluid into the rock range of the mineral seam in the large-depth drilling hole is characterized in that the tank body is arranged on the square frame.
This neotype effect is: the application of the pressure device can simulate the range of the drilling fluid invading the rock of the ore bed under different depths.
Drawings
Fig. 1 is a schematic mechanism diagram of a pressure device for simulating the invasion of drilling fluid into the rock range of a mineral seam in a large-depth drilling hole.
In the figure: 1. a tank cap; 2. an oil cylinder; 3. a high pressure oil pipe; 4. a manual hydraulic oil pump; 5. a piston; 6. a core; 7. slurry, 8 core supports, 9 lower discharge valves, 10 square frames, 11 exhaust valves and 12 pressure gauges.
Detailed Description
The device mainly comprises a manual hydraulic pump, a high-pressure-resistant stainless steel tank body, a rock core support, an exhaust valve, a lower discharge valve, a pressure gauge and the like, so that the drilling fluid is simulated to invade into the range of the rock of the ore bed at different depths.
(1) Manual hydraulic pump
For manually increasing the pressure to simulate the pressure of the seam at a certain depth.
(2) High pressure resistant stainless steel tank
And the supporting body is used for storing the rock core and the drilling fluid.
(3) Rock core support
For securing a core assembly residing within the tank.
(4) Exhaust valve
For venting gas in the tank to thereby release pressure.
(5) Lower discharge valve
Used for discharging the drilling fluid in the tank body.
Principle of operation
And (3) placing the rock core on the support in the high-pressure-resistant tank body, placing the drilling fluid, and covering the tank body to be in a sealing state. The manual hydraulic pump is used for continuously inflating the tank body, the pressure gauge is checked, pressurization is stopped when a certain pressure value is reached, the exhaust valve and the discharging exhaust valve are opened after the tank is kept still for a period of time, gas and redundant drilling fluid are discharged, and therefore the invasion range of the drilling fluid into the rock core is checked.
Claims (6)
1. A pressure device for simulating the invasion of drilling fluid into the rock range of a mineral seam in a large-depth drill hole is characterized in that: the device comprises a tank body, wherein an ore layer assembly is arranged in the tank body, a top cover assembly is arranged at the top of the tank body, and a measuring assembly is arranged on the side wall of the tank body;
the rock stratum subassembly include rock core (6), mud (7), rock core support (8), wherein rock core (6) set up at the centremost, rock core (6) periphery sets up mud (7), rock core (6) below sets up rock core support (8).
2. A pressure device for simulating the invasion of drilling fluid into the rock zone of a seam in a deep borehole according to claim 1 wherein: the top cover assembly comprises a tank body cover cap (1) arranged at the uppermost end, a piston (5) arranged above slurry (7), and an oil cylinder (2) arranged between the tank body cover cap (1) and the piston (5).
3. A pressure device for simulating the invasion of drilling fluid into the rock zone of a seam in a deep borehole according to claim 2 wherein: the oil cylinder (2) is communicated with an external manual hydraulic oil pump (4) through a high-pressure oil pipe (3).
4. A pressure device for simulating the invasion of drilling fluid into the rock zone of a seam in a deep borehole according to claim 3 wherein: the measuring assembly comprises an exhaust valve (11) and a pressure gauge (12).
5. A pressure device for simulating the invasion of drilling fluid into the rock zone of an ore bed in a deep borehole according to claim 4, wherein: a lower discharge valve (9) is arranged below the tank body.
6. A pressure device for simulating the invasion of drilling fluid into the rock zone of an ore bed in a deep borehole according to claim 5 wherein: the tank body is arranged on the square frame (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922373212.5U CN212514156U (en) | 2019-12-26 | 2019-12-26 | Pressure device for simulating drilling fluid invading range of rock in ore bed in large-depth drilling hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922373212.5U CN212514156U (en) | 2019-12-26 | 2019-12-26 | Pressure device for simulating drilling fluid invading range of rock in ore bed in large-depth drilling hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212514156U true CN212514156U (en) | 2021-02-09 |
Family
ID=74386629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922373212.5U Active CN212514156U (en) | 2019-12-26 | 2019-12-26 | Pressure device for simulating drilling fluid invading range of rock in ore bed in large-depth drilling hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212514156U (en) |
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2019
- 2019-12-26 CN CN201922373212.5U patent/CN212514156U/en active Active
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