CN2921260Y - Drilling fluid two-stage degassing unit - Google Patents
Drilling fluid two-stage degassing unit Download PDFInfo
- Publication number
- CN2921260Y CN2921260Y CN 200620007889 CN200620007889U CN2921260Y CN 2921260 Y CN2921260 Y CN 2921260Y CN 200620007889 CN200620007889 CN 200620007889 CN 200620007889 U CN200620007889 U CN 200620007889U CN 2921260 Y CN2921260 Y CN 2921260Y
- Authority
- CN
- China
- Prior art keywords
- pipeline
- drilling fluid
- eliminator
- separator
- fluid
- Prior art date
- 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 - Fee Related
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Abstract
The utility model discloses a drilling fluid two-stage degassing unit, comprising a primary separator and a secondary separator connected via a pipeline, wherein a mist catcher and a gas discharge pipeline are mounted at the top of the primary separator, a pipeline with a low-speed sand pump is mounted at the bottom, and its fluid entry is connected to the choke manifold via the pipeline; the fluid entry of the secondary separator is connected to the fluid outlet of the primary separator via the pipeline, its gas outlet is connected to the chock on the gas outlet pipeline of the primary separator, and its fluid outlet is connected to the vibrating screen via the pipeline. The utility model can improve the degassing effect of gas-containing drilling fluid, improve the density stability of well-entering drilling fluid, and reduce the amount of preparation and loss of the drilling fluid and the drilling and well control risk of high-pressure wells, especially high-pressure gas-containing wells.
Description
Technical field
The utility model relates to a kind of oil/gas drilling liquid degasification equipment, and the degasification equipment in particular for the high viscosity gas cut drilling fluid belongs to a kind of drilling well land equipment.
Background technology
When drilling equipment enters high pressure formation especially during the high pressure gas-bearing formation, formation fluid can be invaded drilling fluid, therefore the gas invader that adopts separation equipment efficiently to remove fully, effectively in the drilling fluid just becomes very important, if gas cut drilling fluid is gone into well again, the density and the drilling fluid column pressure of drilling fluid are reduced, and this can cause the generation of well kick and even gas blowout accident.For high density drilling fluid, in order to guarantee the stability of drilling fluid system, the viscosity of drilling fluid is usually higher, and the degasification problem of high density, high viscosity drilling fluid is more much more difficult than general drilling fluid, and particularly the separation to micro-bubble is difficult more.
At present, the degassing problem of wellbore construction, the general one-level liquid-gas separator that adopts, adopt this degassing scheme to be difficult to satisfy the demand of high density, the high viscosity drilling fluid degassing, for safety drilling, problems such as the degasification means of necessary solution gas cut drilling fluid, degassing process, degasification flow process, degassing apparatus.
The utility model content
At the deficiency that above-mentioned prior art exists, the purpose of this utility model just is to provide a kind of drilling fluid two-stage degasification equipment that can improve degassing effect, shortening degasification cycle, raising drilling fluid stability, guarantee construction safety.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of drilling fluid two-stage degasification equipment, comprise the primary separator and the second-stage separator that are connected by pipeline, mist eliminator and gas discharge pipe are installed in described primary separator top, the pipeline that has the low speed sand pump is installed in the bottom, its fluid intake is connected to choke manifold by pipeline, the fluid intake of described second-stage separator is connected with the fluid issuing of primary separator by pipeline, its gas vent is connected with restriction choke on the primary separator gas outlet pipe line by pipeline, and fluid issuing then is connected on the vibrosieve by pipeline.
Described second-stage separator comprises the eliminator upper shell, eliminator lower house and motor, the eliminator upper shell is connected by flange with the eliminator lower house, be welded with drilling fluid inlet tube and epicoele gas outlet tube on the eliminator upper shell, be welded with the cavity of resorption gas outlet tube on the eliminator lower house, drilling fluid outlet and separator support, motor is installed in the top of eliminator upper shell by flange spool, the eliminator upper shell inside taper guide shell that has been welded, the below of taper guide shell is provided with impeller inducer, and the central axis of this impeller inducer is connected with motor by shaft coupling.
Be provided with bearing assembly in the described eliminator upper shell, the central axis of impeller inducer passes this bearing assembly and is connected with motor by shaft coupling.
Described mist eliminator is connected in the gas outlet pipe line front end at primary separator top.
The utility model is connected with existing drilling equipment by certain mode, finish degasification work jointly, its operating principle is: the drilling fluid with gas that goes out from the well internal return is controlled by the wellhead blowout preventor group, enter choke manifold by pipeline, enter primary separator cutting out partial air pocket again, enter second-stage separator by the outlet that is located at the primary separator middle part, second-stage separator has an impeller inducer by the motor drives rotation, this impeller inducer can help drilling fluid with gas sprawl with the exposure of bubble with separate, isolated gas is discharged through restriction choke, and the drilling fluid after the separation enters vibrosieve through discharge pipe.The utility model can not only improve degassing effect, shortens the degasification cycle, improve the stability of going into the well property of drilling fluid, the safety that guarantees wellbore construction, also help simultaneously to improve the possibility of the continuity of kill-job construction, the success rate that improves a kill-job, minimizing secondary overflow appearance, reduce the consumption and the loss amount of open flow, minimizing drilling fluid, have a very important role reducing drilling well and kill-job difficulty of construction, reduction drilling well and kill-job construction risk, reduction drilling well and kill-job construction cost.
Description of drawings
Fig. 1 is a second-stage separator structure chart of the present utility model;
Fig. 2 is a two-stage piece-rate system allocation plan of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of reference numerals is as follows:
1---motor 2---shaft coupling
3---flange spool 4---bearing assembly
5---eliminator upper shell 6---drilling fluid inlet tube
7---flange 8---eliminator lower house
9---separator support 10---drilling fluid outlet
11---cavity of resorption gas outlet tube 12---impeller inducer
13---central axis 14---gas outlet tube
15---taper guide shell 16---mist eliminator
17---primary separator 18---choke manifold
19---wellhead blowout preventor group 20---sand pump
21---vibrosieve 22---second-stage separator
23---restriction choke
As shown in Figure 1, the motor 1 of second-stage separator places the top, realize that with eliminator upper shell 5 bolt is connected by flange spool 3, drilling fluid inlet tube 6, tapered guide shell 15 and gas outlet tube 14 are welded respectively on the eliminator upper shell, eliminator upper shell 5 is realized Bolt Connection with eliminator lower house 8 by flange 7, cavity of resorption gas outlet tube 11, separator support 9, be welded respectively on the eliminator lower house with drilling fluid outlet 10, impeller inducer 12 is installed in the lower end of central axis 13, central axis 13 passes bearing assembly 4 and connects with motor 1 by shaft coupling, impeller inducer is with low speed rotation during work, its rotating speed is not higher than 1000 rev/mins, the taper guide shell 15 that also has been welded in the eliminator upper shell 5 is used to guide the flow direction and the mode of fluid.
As shown in Figure 2, mist eliminator 16 and gas discharge pipe are installed in the primary separator top, the pipeline that has low speed sand pump 20 is installed in the bottom, the flushing of the high cutting content drilling fluid after being used to implement one-level separated, its fluid intake is connected to choke manifold 18 by pipeline, the fluid intake of second-stage separator is connected with the fluid issuing of primary separator by pipeline, its gas vent is connected with restriction choke 23 on the primary separator outlet gas line by pipeline, fluid issuing is connected on the vibrosieve 21 by pipeline, the drilling fluid with gas that goes out from the well internal return is controlled by wellhead blowout preventor group 19 like this, enter choke manifold 18 by pipeline, enter primary separator 17 cutting out partial air pockets again, enter second-stage separator 22 by the outlet that is located at primary separator 17 middle parts, isolated gas is discharged through restriction choke 23, drilling fluid enters vibrosieve 21 through discharge pipe, mist eliminator 16 is connected on the gas outlet tube front end at primary separator top, is used for reducing the liquid content of being got rid of gas by primary separator.
This equipment is separated by the liquid gas that primary separator and second-stage separator are finished drilling fluid with gas jointly in the running, the drilling fluid with gas primary separator of at first flowing through, the cutting out partial air pocket, drilling fluid enters second-stage separator after one-level is separated, motor drives impeller inducer by certain speed and direction rotation by central axis, the drilling liquid flow that enters second-stage separator flows to impeller inducer through the taper guide shell, the impeller inducer of rotation is given certain centrifugal force of drilling fluid and extended conformation, realizes separating the function of gas in the drilling fluid.
Claims (4)
1, a kind of drilling fluid two-stage degasification equipment, it is characterized in that, comprise the primary separator and the second-stage separator that are connected by pipeline, described primary separator top is equipped with mist eliminator and gas discharge pipe, the pipeline that has the low speed sand pump is installed in the bottom, its fluid intake is connected to choke manifold by pipeline, the fluid intake of described second-stage separator is connected with the fluid issuing of primary separator by pipeline, its gas vent is connected with restriction choke on the primary separator gas outlet pipe line by pipeline, and fluid issuing then is connected on the vibrosieve by pipeline.
2, drilling fluid two-stage degasification equipment according to claim 1, it is characterized in that, described second-stage separator comprises the eliminator upper shell, eliminator lower house and motor, the eliminator upper shell is connected by flange with the eliminator lower house, be welded with drilling fluid inlet tube and epicoele gas outlet tube on the eliminator upper shell, be welded with the cavity of resorption gas outlet tube on the eliminator lower house, drilling fluid outlet and separator support, motor is installed in the top of eliminator upper shell by flange spool, the eliminator upper shell inside taper guide shell that has been welded, the below of taper guide shell is provided with impeller inducer, and the central axis of this impeller inducer is connected with motor by shaft coupling.
3, drilling fluid two-stage degasification equipment according to claim 2 is characterized in that be provided with bearing assembly in the described eliminator upper shell, the central axis of impeller inducer passes this bearing assembly and is connected with motor by shaft coupling.
4, drilling fluid two-stage degasification equipment according to claim 1 is characterized in that described mist eliminator is connected in the gas outlet pipe line front end at primary separator top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007889 CN2921260Y (en) | 2006-03-14 | 2006-03-14 | Drilling fluid two-stage degassing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007889 CN2921260Y (en) | 2006-03-14 | 2006-03-14 | Drilling fluid two-stage degassing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2921260Y true CN2921260Y (en) | 2007-07-11 |
Family
ID=38253739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620007889 Expired - Fee Related CN2921260Y (en) | 2006-03-14 | 2006-03-14 | Drilling fluid two-stage degassing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2921260Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053291A (en) * | 2016-06-24 | 2016-10-26 | 中国石油大学(华东) | Device and method for immediately measuring densities of gas-containing liquid before and after deaeration |
| CN107261564A (en) * | 2017-07-12 | 2017-10-20 | 东营万邦石油科技有限责任公司 | A kind of gas-mud separater and application method |
| CN109356562A (en) * | 2018-10-17 | 2019-02-19 | 青岛理工大学 | Underground filter sand formula gas-liquid separation device |
-
2006
- 2006-03-14 CN CN 200620007889 patent/CN2921260Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053291A (en) * | 2016-06-24 | 2016-10-26 | 中国石油大学(华东) | Device and method for immediately measuring densities of gas-containing liquid before and after deaeration |
| CN106053291B (en) * | 2016-06-24 | 2018-10-19 | 中国石油大学(华东) | It is a kind of it is instant measure air containing fluid degasification before and after density device |
| CN107261564A (en) * | 2017-07-12 | 2017-10-20 | 东营万邦石油科技有限责任公司 | A kind of gas-mud separater and application method |
| CN109356562A (en) * | 2018-10-17 | 2019-02-19 | 青岛理工大学 | Underground filter sand formula gas-liquid separation device |
| CN109356562B (en) * | 2018-10-17 | 2020-08-07 | 青岛理工大学 | Underground sand-filtering type gas-liquid separation device |
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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: 20070711 Termination date: 20120314 |