CN205778845U - A kind of downhole annulus pressure analogue experiment installation - Google Patents
A kind of downhole annulus pressure analogue experiment installation Download PDFInfo
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- CN205778845U CN205778845U CN201620499959.9U CN201620499959U CN205778845U CN 205778845 U CN205778845 U CN 205778845U CN 201620499959 U CN201620499959 U CN 201620499959U CN 205778845 U CN205778845 U CN 205778845U
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- pressure
- accumulator
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- drainage screen
- check valve
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Abstract
The utility model discloses a kind of downhole annulus pressure analogue experiment installation.There is fluctuation in the annular pressure of existing annular pressure analog simulation.This utility model includes drilling fluid container, drainage screen, check valve, manual pressuring pump, stop valve, hydraulic quick coupler, accumulator, Pressure gauge and sampler；The entrance of manual pressuring pump is through check valve and drainage screen and drilling fluid reservoir；Manually suppress delivery side of pump to connect through the input port of check valve with input port, one end of stop valve, one end of hydraulic quick coupler and the sampler of accumulator；The other end of stop valve connects with the input port of drainage screen；Pressure gauge is arranged on accumulator input port.This utility model is when the extraction of simulated pressure medium is with outer row, and accumulator ensures the constant of simulated pressure, it is to avoid pressure change causes the change of surveyed hydrocarbon information.
Description
Technical field
This utility model belongs to environment simulation experiment equipment field, is specifically related to a kind of downhole annulus pressure mould
Draft experiment device, is particularly suitable for oil field with boring down-hole drilling fluids extraction and outer row's environmental simulation in gas detecting
Experiment test.
Background technology
Tradition gas logging technology reaches to find and evaluate oil gas by the hydrocarbon information that detection drilling fluid carries
The purpose of layer, because the drilling fluid being up to ground is processed and detects by it, so there is information delay
The problems such as difficulty are analyzed with oil-gas quantitative.Schlumberger, Haliburton, Bake Hughes Deng Ji big country at present
Outer oilfield technology service company has all carried out the correlational study of downhole drill gas detection technology, and target is to grind
Make with boring gas test instrument, it is simple to the inspection of hydrocarbon information in the down-hole of thousands of meters completes drilling fluid
Survey.It is evacuated to inside it in order to hydrocarbon information, instrument can be detected to need down-hole annular drilling fluid in down-hole
Detection device, after detection and annular space will be drained into outside the down-hole drilling fluids of extraction, in order to simulate on the ground
The extraction of down-hole drilling fluids and outer row, need to manufacture and design a kind of downhole annulus pressure analogue experiment installation.
At present, the technique device of relevant subsurface environment simulation has multiple, but about downhole annulus pressure pressing mold
The correlational study intended is less.
In the patent application of Application No. CN201110328439.3, the annular pressure analog module mentioned
Including motor, hydraulic pump, electromagnetic valve, flow speed control valve, pressurized cylinder, solenoid directional control valve and pressure transducer,
Module uses high-temperature liquid force feed as medium, provides different pressures by hydraulic system in simulation wellbore hole
Hydraulic oil, is used for simulating annular pressure.The simulation of this patent annular pressure there is problems of working as annular pressure
During more than or less than the force value preset, this device be by data acquisition and control module allow electromagnetic valve and
Hydraulic pump carries out corresponding action to realize the stable of annular pressure, so there is certain pressure fluctuation.
The annular pressure medium of its simulation is hydraulic oil, and the annular pressure medium of simulation is more single.Cannot simulate
The extraction of down-hole drilling fluids be drained through outward journey.
Summary of the invention
The purpose of this utility model is the deficiency for existing downhole annulus pressure analogue experiment installation, it is provided that
A kind of downhole annulus pressure analogue experiment installation, in order to can truly simulate when down-hole annular drilling fluid extracts
Pressure environment.
This utility model is achieved through the following technical solutions:
This utility model include drilling fluid container, drainage screen, check valve, manual pressuring pump, stop valve,
Hydraulic quick coupler, accumulator, Pressure gauge and sampler；The entrance of described manual pressuring pump through check valve and
Drainage screen and drilling fluid reservoir；Manually suppress delivery side of pump through check valve and accumulator input port,
The input port connection of one end of stop valve, one end of hydraulic quick coupler and sampler.Described stop valve another
One end connects with the input port of drainage screen；Described Pressure gauge is arranged on accumulator input port.
The beneficial effects of the utility model are:
1, when the extraction of simulated pressure medium is with outer row, accumulator can guarantee that the constant of simulated pressure, keeps away
Exempt from pressure change and cause the change of surveyed hydrocarbon information.
2, the annular pressure medium of simulation can be multiple fluid, more meets the reality that solid, liquid, gas coexist
Operating mode.
3, apparatus structure is simple, reduces test difficulty.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.
As it is shown in figure 1, a kind of downhole annulus pressure analogue experiment installation, including drilling fluid container 1, filter
Net 2, check valve 3, manual pressuring pump 4, stop valve 5, hydraulic quick coupler 6, accumulator 7, Pressure gauge 8
With sampler 9；The entrance of manual pressuring pump 4 connects with drilling fluid container 1 through check valve 3 and drainage screen 2
Logical；The outlet of manual pressuring pump 4 through check valve 3 and the input port of accumulator 7, one end of stop valve 5,
One end of hydraulic quick coupler 6 and the input port connection of sampler 9.The other end of stop valve 5 and drainage screen 2
Input port connection；Pressure gauge 8 is arranged on accumulator 7 input port.The other end of hydraulic quick coupler 6 is passed through
Detected gas.
The detailed process that this downhole annulus pressure analogue experiment installation carries out downhole annulus pressure simulation is as follows:
It is first shut off stop valve 5, in accumulator 7, is passed through detected gas by hydraulic quick coupler 6, then leads to
Cross suppressing of manual pressuring pump 4, the drilling fluid in drilling fluid container 1 through drainage screen 2 filter after again through list
It is driven in accumulator to valve 3 and mixes with detected gas, until the reading of Pressure gauge 8 arrives presets mould
Pseudopressure size, stops suppressing.Now down-hole annular drilling liquid pressure simulated environment is set up, sampling dress
Put 9 from accumulator 7, extract the drilling fluid under predetermined analog pressure outer row, then open stop valve 5
Lay down predetermined analog pressure.
Wherein, the effect of accumulator is to ensure that the constant of the drilling fluid simulated pressure of down-hole annular, as bladder
Accumulator is made up of rubbery human body, fluid part and the housing with seal, is positioned at rubbery human body week
The fluid enclosed is connected with fluid loop.When pressure raises, fluid enters accumulator, and gas is compressed to pressure
Power is equal to stopping compression during oil liquid pressure, system line pressures no longer rises；Press when loine pressure declines
Contracting air expansion, is pressed into fluid loop, thus suppresses the decline of loine pressure, other type of accumulation of energy
Device is in like manner.If not using accumulator, but using common hermetic container, boring at simulation down-hole annular
During the extraction of well liquid, the pressure simulated can disappear or produce negative pressure, arranges outside simulation down-hole annular drilling fluid
Time, the pressure simulated can increase, and does not reaches the purpose of simulation down-hole annular drill-in fluid pressure environment.
Claims (1)
1. a downhole annulus pressure analogue experiment installation, including drilling fluid container, drainage screen, check valve,
Manual pressuring pump, stop valve, hydraulic quick coupler, accumulator, Pressure gauge and sampler, it is characterised in that:
The entrance of described manual pressuring pump is through check valve and drainage screen and drilling fluid reservoir；Manual pressuring pump
Export through check valve and the input port of accumulator, one end of stop valve, one end of hydraulic quick coupler and sampling dress
The input port connection put；The other end of described stop valve connects with the input port of drainage screen；Described pressure
Table is arranged on accumulator input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620499959.9U CN205778845U (en) | 2016-05-26 | 2016-05-26 | A kind of downhole annulus pressure analogue experiment installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620499959.9U CN205778845U (en) | 2016-05-26 | 2016-05-26 | A kind of downhole annulus pressure analogue experiment installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205778845U true CN205778845U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620499959.9U Active CN205778845U (en) | 2016-05-26 | 2016-05-26 | A kind of downhole annulus pressure analogue experiment installation |
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| CN (1) | CN205778845U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937394A (en) * | 2016-05-26 | 2016-09-14 | 杭州电子科技大学 | Downhole annulus pressure simulation experiment apparatus and method |
| CN110630194A (en) * | 2019-10-11 | 2019-12-31 | 中国石油集团渤海钻探工程有限公司 | Pressure control drilling pressure compensation device of energy storage unit formula |
-
2016
- 2016-05-26 CN CN201620499959.9U patent/CN205778845U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937394A (en) * | 2016-05-26 | 2016-09-14 | 杭州电子科技大学 | Downhole annulus pressure simulation experiment apparatus and method |
| CN105937394B (en) * | 2016-05-26 | 2023-08-15 | 杭州电子科技大学 | Underground annulus pressure simulation experiment device and method |
| CN110630194A (en) * | 2019-10-11 | 2019-12-31 | 中国石油集团渤海钻探工程有限公司 | Pressure control drilling pressure compensation device of energy storage unit formula |
| CN110630194B (en) * | 2019-10-11 | 2021-09-28 | 中国石油集团渤海钻探工程有限公司 | Pressure control drilling pressure compensation device of energy storage unit formula |
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