CN203161134U - Rock debris pre-separation mechanism of drilling fluid four-phase separator - Google Patents
Rock debris pre-separation mechanism of drilling fluid four-phase separator Download PDFInfo
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- CN203161134U CN203161134U CN 201220734493 CN201220734493U CN203161134U CN 203161134 U CN203161134 U CN 203161134U CN 201220734493 CN201220734493 CN 201220734493 CN 201220734493 U CN201220734493 U CN 201220734493U CN 203161134 U CN203161134 U CN 203161134U
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- drilling fluid
- screen cloth
- inlet
- phase separator
- landwaste
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Abstract
The utility model discloses a drilling fluid four-phase separator detritus is separating mechanism in advance, including a jar body, be equipped with inlet and sand discharge hole on jar body, install the screen cloth on jar wall that internal being close to the inlet of jar, the screen cloth will jar internal portion separates for upper and lower two independent cavitys, and the cavity on upper portion is the preseparation chamber, the inlet with the preseparation chamber communicates with each other in advance. The utility model discloses the solid-phase detritus that diameter is greater than predetermined particle diameter in the filterable stratum result, and then the protection separator export solid-phase pump does not receive the harm that the large granule was strikeed, guarantee piece-rate system's normal operating.
Description
Technical field
The utility model relates to four device for phase saparation manufacturing technology fields, oil drilling under balance pressure drilling circulating system ground, mainly is the mechanism that carries out pre-separation for the bulky grain landwaste that ground four-phase separator when the overall process under-balance drilling produces cave-in owing to creeping into.
Background technology
Under balance pressure drilling has minimizing that payzone is damaged, improve plurality of advantages such as oil and gas production, in the under balance pressure drilling process, because drilling well liquid columnpressure is less than strata pressure, formation fluid will enter well and return to ground, therefore need on the ground the drilling fluid that contains the stratum product is carried out separating treatment, recover its performance, circulate in order to pump in the well again.To containing the separating treatment of stratum product (comprising gas, crude oil and landwaste) drilling fluid, it is at present domestic that what generally adopt is the configuration of gas-liquid two-phase separator, skimmer tank, vibrosieve, wherein skimmer tank and vibrosieve are unenclosed construction, drilling fluid in it is communicated with atmosphere, if contain hazardous substancess such as hydrogen sulfide in the drilling fluid, will threaten personnel and environment structure, even lead to serious accident, therefore, at present domesticly can't carry out under-balance drilling operation at hydrogen sulfide content greater than the reservoir of 50ppm.
In order to satisfy the needs that high sulfur-bearing reservoir carried out under-balance drilling operation, namely need in confined conditions the gas in the drilling fluid, crude oil and landwaste effectively to be separated, and separated product dealt carefully with, thereby eliminate stratum product in the drilling fluid volatile hazardous substancess such as (particularly) hydrogen sulfide to the risk of external world's diffusion.The four-phase separator of design is applied in the under-balance drilling operation, not only can replace open type devices such as liquid-gas separator, skimmer tank, the more important thing is to the airtight under-balance drilling operation of domestic sulfur-bearing formation provides technological reserve, expanded the range of application of under-balanced drilling technology.
At present, some oil companies of countries such as the U.S., Canada, Britain have developed four-phase separator in succession, and have successfully carried out on-the-spot use; And at home, publication number is CN201330572, the Chinese patent literature that open day is on October 21st, 2009 discloses a kind of drilling fluid four-phase separator, relate to drilling fluid separation equipment manufacturing technology field, comprise housing and separating mechanism, the Gu Cang that removes of separating mechanism is arranged on the interior front portion of housing, liquid, gas separation bin and oil storage storehouse are separately positioned on middle part and the rear portion in the housing, solve prior art and can not separate oil in the drilling fluid and the problem of solid, in the time of can also preventing that mud flow rate from increasing, discharge from exhaust line, cause the problem of ground pollution, the utility model has designed a kind of with the water in the drilling fluid, oil, the drilling fluid four-phase separator that gas and solid phase are separated in different cabins, can guarantee drilling fluid physics and chemical property, have compact conformation, overall performance is good, the characteristics that automaticity is high.
But above-mentioned drilling fluid four-phase separator is when being applied under balance pressure drilling, because strata pressure is greater than drilling well liquid columnpressure, can cause the borehole wall to cave in easily like this, the cutting grain particle diameter is relatively large in the feasible stratum product of discharging, usually the maximum solid phase particles requirement of allowing greater than the normal operation of pump, therefore easy debris outlet solid phase pump to eliminator causes bigger infringement, even cause the generation of security incident, therefore solve the prerequisite that this bulky grain debris issues becomes the normal operation of device security.
Summary of the invention
For solving above-mentioned existing in prior technology technical problem; the utility model proposes a kind of drilling fluid four-phase separator landwaste pre-separation mechanism; the utility model can filter diameter in the product of stratum greater than the solid phase landwaste of default particle diameter; and then protection separator outlet solid phase pump is not subjected to the infringement of bulky grain impact, the normal operation of guarantee piece-rate system.
The utility model is realized by adopting following technical proposals:
A kind of drilling fluid four-phase separator landwaste pre-separation mechanism, comprise tank body, be provided with inlet and clearance hole at tank body, it is characterized in that: the tank skin near inlet in tank body is equipped with screen cloth, screen cloth is divided into up and down two independently cavitys with described tank interior, the cavity on top is pre-separating cavity, and inlet communicates with described pre-separating cavity.
Described screen cloth is to tilt to be installed on the tank skin, and the cross sectional shape of pre-separating cavity is triangular in shape.
Be positioned on the tank body of below of inlet and have the walkthrough sandpipe, the walkthrough sandpipe communicates with pre-separating cavity, and walkthrough sandpipe and screen cloth join.
Described walkthrough sandpipe is obliquely installed, and the angle of inclination is consistent with the angle of inclination of described screen cloth.
Be provided with the flange for shutoff in the end of described walkthrough sandpipe.
Bottom at described tank body is provided with clearance hole, and clearance hole is connected with the solid phase pump by the sediment outflow pipe, is connected with pump discharge pipe on the solid phase pump.
Compared with prior art, the beneficial effect that reaches of the utility model is as follows:
1; in the utility model; adopt " tank skin near inlet in tank body is equipped with screen cloth; screen cloth is divided into up and down two independently cavitys with described tank interior; the cavity on top is pre-separating cavity; inlet communicates with described pre-separating cavity " such technical scheme; realized separating of bulky grain and short grained landwaste and drilling fluid continuous phase; fall on the ground the solid phase cutting grain that diameter is bigger in layer product by screen filtration; and then can protect separator outlet solid phase pump not to be subjected to oarse-grained impact and the damage that causes thus, for the normal operation of four-phase separator provides guarantee.
2, in the utility model, adopt " described screen cloth is to tilt to be installed on the tank skin; the cross sectional shape of pre-separating cavity is triangular in shape; be positioned on the tank body of below of inlet and have the walkthrough sandpipe; the walkthrough sandpipe communicates with pre-separating cavity; and the walkthrough sandpipe joins with screen cloth " and such technical scheme, after stopping to circulate, landwaste can be discharged by the walkthrough sandpipe along the screen cloth of inclination.
3, in the utility model, adopt " the walkthrough sandpipe is obliquely installed, and the angle of inclination is consistent with the angle of inclination of described screen cloth " such technical scheme, can be convenient, successfully drilling cuttings is discharged from pre-separating cavity.
4, in the utility model, adopt " being provided with the flange for shutoff in the end of described walkthrough sandpipe " such technical scheme, manual unlocking according to actual needs.
5, in sum, the utility model is simple in structure, is easy to produce and install, and reliable in structure satisfies the big discharge capacity requirement of the under balance pressure drilling circulating system, also is convenient to after the use clean and safeguard.
Description of drawings
Fig. 1 overall structure schematic diagram of the present utility model.
Mark among the figure: 1, inlet, 2, screen cloth, 3, tank body, 4, the sediment outflow pipe, 5, the solid phase pump, 6, pump discharge pipe, 7, the walkthrough sandpipe, 8, flange, 9, pre-separating cavity.
The specific embodiment
As a preferred embodiments of the present utility model, the utility model discloses a kind of drilling fluid four-phase separator landwaste pre-separation mechanism, comprise tank body, be provided with inlet and clearance hole at tank body, tank skin near inlet in tank body is equipped with screen cloth, screen cloth is divided into up and down two independently cavitys with described tank interior, and the cavity on top is pre-separating cavity, and inlet communicates with described pre-separating cavity.
As preferred forms of the present utility model, with reference to Figure of description 1, it comprises tank body, be provided with inlet and clearance hole at tank body, tank skin near inlet in tank body is equipped with screen cloth, screen cloth is divided into up and down two independently cavitys with described tank interior, the cavity on top is pre-separating cavity, inlet communicates with described pre-separating cavity, screen cloth is to tilt to be installed on the tank skin, the cross sectional shape of pre-separating cavity is triangular in shape, be positioned on the tank body of below of inlet and have the walkthrough sandpipe, the walkthrough sandpipe communicates with pre-separating cavity, and walkthrough sandpipe and screen cloth join, the walkthrough sandpipe is obliquely installed, the angle that tilts is consistent with the angle of inclination of described screen cloth, is provided with the flange for shutoff in the end of described walkthrough sandpipe, is provided with clearance hole in the bottom of described tank body, clearance hole is connected with the solid phase pump by the sediment outflow pipe, is connected with pump discharge pipe on the solid phase pump.
Operating principle is as follows:
The inlet 1 of four-phase separator is at the end face of tank body 3.Because the solid phase particles density in the formation fluid is bigger, so landwaste can be under the deposition of the bottom of tank body.For ease of sediment outflow, at the bottom of the clearance hole of eliminator is arranged at jar, and be connected to solid phase pump 5 by sediment outflow pipe 4, the swabbing action by the solid phase pump is discharged to landwaste outside the jar from pump discharge pipe 6 at last.Because the particle size of 5 pairs of landwaste of solid phase pump has certain requirement, be and guarantee that the solid phase impeller of pump is not subjected to oarse-grained inertia impact and causes damage, generally require the fluid contained particle particle diameter of pumping less, therefore need before bottom settlings, in advance the cutting grain of greater particle size be filtered out and eliminating separately at cutting grain.For this reason, the tank skin near inlet is installed one deck screen cloth 2 in tank body.Keep certain angle of slope to install screen cloth and tank skin end face, formation fluid flows out through behind the screen cloth 2 from inlet 1, and short grained landwaste and drilling fluid continuous phase continue in the flow into tank, and the bulky grain landwaste is stopped by screen cloth to rest on the screen cloth.Because bulky grain landwaste quality is bigger, be subjected to the self gravitation effect to fall to the bottom along the screen cloth inclined-plane again.After stopping circulation, open flange 8, the bulky grain landwaste just can be eaily walkthrough sandpipe 7 from the tank skin end face get rid of.
Claims (6)
1. drilling fluid four-phase separator landwaste pre-separation mechanism, comprise tank body (3), be provided with inlet (1) and clearance hole at tank body (3), it is characterized in that: the tank skin near inlet (1) in tank body (3) is equipped with screen cloth (2), screen cloth (2) is divided into up and down two independently cavitys with described tank body (3) inside, the cavity on top is pre-separating cavity (9), and inlet (1) communicates with described pre-separating cavity (9).
2. drilling fluid four-phase separator landwaste pre-separation according to claim 1 mechanism, it is characterized in that: described screen cloth (2) is to tilt to be installed on the tank skin, and the cross sectional shape of pre-separating cavity (9) is triangular in shape.
3. drilling fluid four-phase separator landwaste pre-separation according to claim 1 and 2 mechanism, it is characterized in that: be positioned on the tank body (3) of below of inlet (1) and have walkthrough sandpipe (7), walkthrough sandpipe (7) communicates with pre-separating cavity (9), and walkthrough sandpipe (7) joins with screen cloth (2).
4. drilling fluid four-phase separator landwaste pre-separation according to claim 3 mechanism, it is characterized in that: described walkthrough sandpipe (7) is obliquely installed, and the angle of inclination is consistent with the angle of inclination of described screen cloth (2).
5. drilling fluid four-phase separator landwaste pre-separation according to claim 4 mechanism is characterized in that: be provided with the flange (8) for shutoff in the end of described walkthrough sandpipe (7).
6. drilling fluid four-phase separator landwaste pre-separation according to claim 1 mechanism, it is characterized in that: the bottom at described tank body (3) is provided with clearance hole, clearance hole is connected with solid phase pump (5) by sediment outflow pipe (4), is connected with pump discharge pipe (6) on the solid phase pump (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734493 CN203161134U (en) | 2012-12-28 | 2012-12-28 | Rock debris pre-separation mechanism of drilling fluid four-phase separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734493 CN203161134U (en) | 2012-12-28 | 2012-12-28 | Rock debris pre-separation mechanism of drilling fluid four-phase separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161134U true CN203161134U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734493 Expired - Fee Related CN203161134U (en) | 2012-12-28 | 2012-12-28 | Rock debris pre-separation mechanism of drilling fluid four-phase separator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111133290A (en) * | 2017-07-27 | 2020-05-08 | 荷兰应用科学研究会(Tno) | Particle detection apparatus and method for detecting airborne particles |
| CN111140189A (en) * | 2019-11-06 | 2020-05-12 | 中国石油集团川庆钻探工程有限公司 | Quick logging rock debris collecting system of closed drilling circulation system of sulfur-containing stratum |
-
2012
- 2012-12-28 CN CN 201220734493 patent/CN203161134U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111133290A (en) * | 2017-07-27 | 2020-05-08 | 荷兰应用科学研究会(Tno) | Particle detection apparatus and method for detecting airborne particles |
| CN111133290B (en) * | 2017-07-27 | 2023-11-03 | 荷兰应用科学研究会(Tno) | Particle detection device and method for detecting airborne particles |
| CN111140189A (en) * | 2019-11-06 | 2020-05-12 | 中国石油集团川庆钻探工程有限公司 | Quick logging rock debris collecting system of closed drilling circulation system of sulfur-containing stratum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20211228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |