CN108194041A - A kind of method of hydrogen sulfide gas in removing drilling well - Google Patents
A kind of method of hydrogen sulfide gas in removing drilling well Download PDFInfo
- Publication number
- CN108194041A CN108194041A CN201711424037.7A CN201711424037A CN108194041A CN 108194041 A CN108194041 A CN 108194041A CN 201711424037 A CN201711424037 A CN 201711424037A CN 108194041 A CN108194041 A CN 108194041A
- Authority
- CN
- China
- Prior art keywords
- hydrogen sulfide
- drilling fluid
- landwaste
- drilling
- screen
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 62
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 39
- 239000007789 gas Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 52
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 23
- 239000011593 sulfur Substances 0.000 claims abstract description 23
- 230000008030 elimination Effects 0.000 claims abstract description 19
- 238000003379 elimination reaction Methods 0.000 claims abstract description 19
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 9
- 239000001257 hydrogen Substances 0.000 claims abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000000605 extraction Methods 0.000 claims abstract description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims abstract description 5
- 239000000523 sample Substances 0.000 claims abstract description 5
- 238000004073 vulcanization Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 6
- 239000005864 Sulphur Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
- E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/067—Separating gases from drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/068—Arrangements for treating drilling fluids outside the borehole using chemical treatment
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of methods for removing hydrogen sulfide gas in drilling well, are related to sulfur crude gas well under-balance drilling operation field, step is：In the construction of closed underbalance, the drilling fluid of sulfide hydrogen and landwaste enters enclosed vibratory screen by inlet, passes through on vibration screen, sieve detaches landwaste and drilling fluid, landwaste falls to debris mechanism, and enclosed vibratory screen is sent out by debris mechanism；And drilling fluid then filters the fluid reservoir that sieve enters lower section, and circulating tank is pumped by liquid pump；Vacuum pump is always on, and the gas of extraction is transported to separator gas outlet processing；It evaporates by shaker vibration containing hydrogen sulfide gas in drilling fluid, is arrived through hydrogen sulfide probe monitors, the drilling fluid and the hydrogen sulfide of landwaste surface attachment that sulfur elimination sprinkling mouth sprinkling sulfur elimination is further removed on vibration screen.The present invention can effectively solve during closed under balance pressure drilling efficiently separating, and hydrogen sulfide elimination effect can be significantly improved for hydrogen sulfide in landwaste and drilling fluid.
Description
Technical field
The present invention relates to sulfur crude gas well under-balance drilling operation fields, specifically relate to vulcanize in a kind of removing drilling well
The method of hydrogen, for detaching a small amount of hydrogen sulfide gas in solid phase and drilling fluid in sulfur-containing stratum under-balance drilling operation.
Background technology
Closed under-balanced drilling technology is to solve the effective technology means that sulfur crude gas reservoir later stage hair is opened, and to realize closed owe
Balanced drilling must assure that the closed of landwaste separation process.The vibrating screen of oil drilling is all unlimited at present, and ground is returned out
Pernicious gas can be largely dispersed into air in vibrating screen position, endanger body and equipment safety.Therefore it designs a kind of true
The enclosed vibratory screen of empty formula is the important component of closed Unbalance technique.
Publication No. CN101463713, publication date disclose a kind of sulfur-bearing for the Chinese patent literature on June 24th, 2009
The drilling fluid circulating and separating method of stratum under-balance drilling operation belongs to the processing technology field of sulfur crude gas well drilling fluid, point
Include pressure control, oil from method, solid, qi leel is removed from the separation of, natural gas, hydrogen sulfide and solid controlling and with slurry handles several steps
Suddenly, equipment include the closed piece-rate system of drilling fluid and solid controlling system, the invention devise one kind can to hydrogen sulfide in drilling fluid into
The circulating and separating method of the effective sulfur-bearing formation underbalanced drilling liquid for controlling, closed separation being carried out to stratum product of row；It solves
The problem of prior art open process threatens to personnel, damage is brought to environment has complete closed processes, recycles
With stratum product is monitored online and accurate measurement and understand strata condition the characteristics of.
But using above patent document as the prior art of representative, however it remains following defect：
1st, during existing Under-balanced drilling fluid multi-cycle separation, complete closed removing hydrogen sulfide is not carried out, is exposed to outer
After hydrogen sulfide gets to a certain concentration, serious security risk can be brought to treatment people.
2nd, existing Under-balanced drilling fluid circulating and separating method, it is unsatisfactory to the elimination effect of hydrogen sulfide.
Invention content
The present invention is directed to it is existing for the above-mentioned prior art the defects of and deficiency, provide it is a kind of removing drilling well in hydrogen sulfide
The method of gas, the present invention can effectively solve during closed under balance pressure drilling hydrogen sulfide in landwaste and drilling fluid effectively point
From, and hydrogen sulfide elimination effect can be significantly improved.
The present invention is realized by using following technical proposals：
A kind of method of hydrogen sulfide gas in removing drilling well, it is characterised in that：In the construction of closed underbalance, sulfide hydrogen and rock
The drilling fluid of bits enters enclosed vibratory screen by inlet, passes through on vibration screen, and sieve is divided landwaste and drilling fluid
From landwaste falls to debris mechanism, and enclosed vibratory screen is sent out by debris mechanism；And drilling fluid then filter sieve into
Enter the fluid reservoir of lower section, circulating tank is pumped by liquid pump；Vacuum pump is always on, and the gas of extraction is transported to separator gas and goes out
Mouth processing；It evaporates, is arrived through hydrogen sulfide probe monitors, sulfur elimination by shaker vibration containing hydrogen sulfide gas in drilling fluid
The drilling fluid and the hydrogen sulfide of landwaste surface attachment that sprinkling mouth sprinkling sulfur elimination is further removed on vibration screen.
The enclosed vibratory screen includes inlet, vulcanization HydroNit sensor, sulfur elimination sprinkling mouth, vacuum pump, spiral chip removal machine
Structure, fluid reservoir, closed box and vibration screen；The fluid reservoir is set to the lower section of closed box；It is provided on closed box described
Inlet and sulfur elimination sprinkling mouth；The vibration screen and debris mechanism, one end of vibration screen are provided in closed box
It is connected with the inlet, vibration screen tilting is arranged in closed box, and debris mechanism is located at the vibration screen
Lower section；Be provided on the closed box detection closed box in concentration of hydrogen sulfide vulcanization HydroNit sensor, vacuum pump with it is described closed
Case connects.
The vibration screen tilting, which is arranged in closed box, to be referred to：Vibration screen towards one end of the inlet compared with
Height, the relatively low tilting arrangement of the other end.
Compared with prior art, what the present invention was reached has the beneficial effect that：
1st, in the present invention, using enclosed vibratory screen to the vibration of liquid and the suction function of vacuum pump, by the vulcanization in drilling fluid
Hydrogen is precipitated, and is taken away in closed environment by vacuum pump, realizes effective removing of hydrogen sulfide in drilling fluid, ensure that people
Member and equipment safety.
2nd, in the present invention, by vulcanizing HydroNit sensor, automatic spraying sulfur elimination further removes drilling fluid and landwaste surface is residual
The hydrogen sulfide stayed, realize to the maximum extent exclusion drilling fluid and landwaste without hydrogen sulfide.
3rd, in the present invention, one end of vibration screen towards the inlet is higher, the relatively low tilting arrangement of the other end, this
The mode of sample, is more conducive to and separates drilling fluid and gas by vibrating screen, enhances separating effect.
Description of the drawings
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein：
Fig. 1 is the structure principle chart for realizing this method.
It is marked in figure：
It is inlet 8, vulcanization HydroNit sensor 9, sulfur elimination sprinkling mouth 10, vacuum pump 11, debris mechanism 12, fluid reservoir 13, closed
Case 14, vibration screen 15.
Specific embodiment
As the preferred forms of the present invention, it discloses a kind of method for removing hydrogen sulfide gas in drilling well, close
It closes in underbalance construction, the drilling fluid of sulfide hydrogen and landwaste enters enclosed vibratory screen by inlet, is passed through on vibration screen
It crosses, sieve detaches landwaste and drilling fluid, and landwaste falls to debris mechanism, is sent out by debris mechanism closed
Vibrating screen；And drilling fluid then filters the fluid reservoir that sieve enters lower section, and circulating tank is pumped by liquid pump；Vacuum pump is always on,
The gas of extraction is transported to separator gas outlet processing；It is volatilized in drilling fluid containing hydrogen sulfide gas by shaker vibration
Come, arrived through hydrogen sulfide probe monitors, sulfur elimination sprinkling mouth sprays sulfur elimination on vibration screen, the drilling fluid further removed and
The hydrogen sulfide of landwaste surface attachment utmostly ensures not have hydrogen sulfide leakage, so as to fulfill the closed of landwaste and drilling fluid
Separation, realizes closed under balance pressure drilling.
In this method, the structure of used enclosed vibratory screen specifically includes inlet, vulcanization HydroNit sensor, sulfur elimination sprinkling
Mouth, vacuum pump, debris mechanism, fluid reservoir, closed box and vibration screen；The fluid reservoir is set under closed box
Side；The inlet and sulfur elimination sprinkling mouth are provided on closed box；The vibration screen and spiral row are provided in closed box
Consider mechanism to be worth doing, one end of vibration screen is connected with the inlet, and vibration screen tilting is arranged in closed box, the vibrating screen
Net tilting, which is arranged in closed box, to be referred to：One end of vibration screen towards the inlet is higher, the relatively low inclination of the other end
Formula arranges that debris mechanism is located at the lower section of the vibration screen；Sulphur in detection closed box is provided on the closed box
Change the vulcanization HydroNit sensor of hydrogen concentration, vacuum pump is connected with the closed box.In the construction of closed underbalance, sulfide hydrogen and landwaste
Drilling fluid by inlet 8 enter remove drilling well in hydrogen sulfide gas method after, pass through on vibration screen 15, vibrating screen
Net 15 detaches landwaste and drilling fluid, and landwaste falls to debris mechanism 12, and enclosed vibratory screen is sent out by the mechanism；
And drilling fluid then filters the fluid reservoir 13 that sieve enters lower section, and circulating tank is pumped by liquid pump；If the sulphur contained in drilling fluid
Change hydrogen to evaporate by the vibration of vibration screen 15, monitor that vacuum pump 11, which will start, to volatilize through vulcanizing HydroNit sensor 9
The extraction of a small amount of hydrogen sulfide gas, the gas of extraction carried out except being recycled after sulphuring treatment, while sulfur elimination sprinkling mouth 10 can be sprayed and be removed
Sulphur agent further removes drilling fluid and the hydrogen sulfide of landwaste surface attachment on vibration screen 15.
Claims (3)
- A kind of 1. method for removing hydrogen sulfide gas in drilling well, it is characterised in that：Closed underbalance construction in, sulfide hydrogen and The drilling fluid of landwaste enters enclosed vibratory screen by inlet, passes through on vibration screen, and sieve carries out landwaste and drilling fluid Separation, landwaste fall to debris mechanism, and enclosed vibratory screen is sent out by debris mechanism；And drilling fluid then filters sieve Into the fluid reservoir of lower section, circulating tank is pumped by liquid pump；Vacuum pump is always on, and the gas of extraction is transported to separator gas Outlet is handled；It evaporates, is arrived through hydrogen sulfide probe monitors, sulphur removal by shaker vibration containing hydrogen sulfide gas in drilling fluid The drilling fluid and the hydrogen sulfide of landwaste surface attachment that agent sprinkling mouth sprinkling sulfur elimination is further removed on vibration screen.
- 2. a kind of method for removing hydrogen sulfide gas in drilling well according to claim 1, it is characterised in that：Described is closed Vibrating screen includes inlet（8）, vulcanization HydroNit sensor（9）, sulfur elimination sprinkling mouth（10）, vacuum pump（11）, debris mechanism （12）, fluid reservoir（13）, closed box（14）And vibration screen（15）；The fluid reservoir（13）It is set to closed box（14）Under Side；In closed box（14）On be provided with the inlet（8）Mouth is sprayed with sulfur elimination（10）；Closed box（14）Inside it is provided with described shake Dynamic sieve（15）With debris mechanism（12）, vibration screen（15）One end and the inlet（8）Connection, vibration screen （15）Tilting is arranged in closed box（14）It is interior, debris mechanism（12）Positioned at the vibration screen（15）Lower section；Institute State closed box（14）On be provided with detection closed box（14）The vulcanization HydroNit sensor of interior concentration of hydrogen sulfide（9）, vacuum pump（11）With institute State closed box（14）Connection.
- 3. a kind of safety and environmental protection sealing and circulating drilling well Ground Operation method according to claim 2, it is characterised in that：It is described Vibration screen tilting, which is arranged in closed box, to be referred to：One end of vibration screen towards the inlet is higher, and the other end is relatively low Tilting arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711424037.7A CN108194041A (en) | 2017-12-25 | 2017-12-25 | A kind of method of hydrogen sulfide gas in removing drilling well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711424037.7A CN108194041A (en) | 2017-12-25 | 2017-12-25 | A kind of method of hydrogen sulfide gas in removing drilling well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194041A true CN108194041A (en) | 2018-06-22 |
Family
ID=62583848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711424037.7A Pending CN108194041A (en) | 2017-12-25 | 2017-12-25 | A kind of method of hydrogen sulfide gas in removing drilling well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108194041A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184599A (en) * | 2018-08-22 | 2019-01-11 | 中国石油天然气股份有限公司 | Well-flushing returns processing unit and its processing method |
| CN110331951A (en) * | 2019-06-28 | 2019-10-15 | 中国石油集团川庆钻探工程有限公司 | The method for removing hydrogen sulfide in oil base drilling fluid using basic zinc carbonate aqueous solution |
| CN117072119A (en) * | 2023-08-18 | 2023-11-17 | 大庆永铸石油技术开发有限公司 | Device for harmless treatment of drilling cuttings |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201517382U (en) * | 2009-10-14 | 2010-06-30 | 中国石油天然气股份有限公司 | Enclosed vibratory screen for well drilling of petroleum |
| CN104763362A (en) * | 2015-02-11 | 2015-07-08 | 四川西林石油物资装备有限公司 | Closed sieving device for high-sulfur-content containing oil-gas field drilling liquid |
| CN107152251A (en) * | 2017-07-12 | 2017-09-12 | 中国石油集团川庆钻探工程有限公司 | The emergency processing method of hydrogen sulfide in the circulatory system of Under-balanced drilling fluid ground |
| CN107165595A (en) * | 2017-07-12 | 2017-09-15 | 中国石油集团川庆钻探工程有限公司 | The closed sweep-out method of pernicious gas in drilling fluid |
| CN107191147A (en) * | 2017-07-12 | 2017-09-22 | 中国石油集团川庆钻探工程有限公司 | Hydrogen sulfide in drilling fluid removes system |
-
2017
- 2017-12-25 CN CN201711424037.7A patent/CN108194041A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201517382U (en) * | 2009-10-14 | 2010-06-30 | 中国石油天然气股份有限公司 | Enclosed vibratory screen for well drilling of petroleum |
| CN104763362A (en) * | 2015-02-11 | 2015-07-08 | 四川西林石油物资装备有限公司 | Closed sieving device for high-sulfur-content containing oil-gas field drilling liquid |
| CN107152251A (en) * | 2017-07-12 | 2017-09-12 | 中国石油集团川庆钻探工程有限公司 | The emergency processing method of hydrogen sulfide in the circulatory system of Under-balanced drilling fluid ground |
| CN107165595A (en) * | 2017-07-12 | 2017-09-15 | 中国石油集团川庆钻探工程有限公司 | The closed sweep-out method of pernicious gas in drilling fluid |
| CN107191147A (en) * | 2017-07-12 | 2017-09-22 | 中国石油集团川庆钻探工程有限公司 | Hydrogen sulfide in drilling fluid removes system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184599A (en) * | 2018-08-22 | 2019-01-11 | 中国石油天然气股份有限公司 | Well-flushing returns processing unit and its processing method |
| CN110331951A (en) * | 2019-06-28 | 2019-10-15 | 中国石油集团川庆钻探工程有限公司 | The method for removing hydrogen sulfide in oil base drilling fluid using basic zinc carbonate aqueous solution |
| CN110331951B (en) * | 2019-06-28 | 2021-07-23 | 中国石油集团川庆钻探工程有限公司 | Method for removing hydrogen sulfide in oil-based drilling fluid by using basic zinc carbonate aqueous solution |
| CN117072119A (en) * | 2023-08-18 | 2023-11-17 | 大庆永铸石油技术开发有限公司 | Device for harmless treatment of drilling cuttings |
| CN117072119B (en) * | 2023-08-18 | 2024-04-09 | 大庆永铸石油技术开发有限公司 | Device for harmless treatment of drilling cuttings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2541958C2 (en) | Optimisation of vacuum systems and methods of drying of drilled solids | |
| CN108194041A (en) | A kind of method of hydrogen sulfide gas in removing drilling well | |
| RU2534280C2 (en) | Drill cuttings drying system and method | |
| US8201693B2 (en) | Apparatus and method for separating solids from a solids laden liquid | |
| US7556154B2 (en) | Drill fluid screening device | |
| US20020134550A1 (en) | Slurry recovery process | |
| US5582727A (en) | Apparatus for cleaning drilling mud | |
| EP2282787B1 (en) | Method and device for isolating tissue cells from a liquid | |
| CN206071496U (en) | Underbalanced drilling liquid vibrosieve | |
| US9364777B2 (en) | Apparatus and method for separating solids from a solids laden drilling fluid | |
| US4255269A (en) | Method and apparatus for adapting the composition of a drilling fluid for use in making a hole in the earth by rotary drilling | |
| US20080078700A1 (en) | Self-cleaning shaker | |
| CN207761605U (en) | A kind of drilling well enclosed vibratory screen | |
| CN106076068A (en) | The closed circuit internal circulation apparatus of collection and confinement of gases during a kind of solid-liquid separation | |
| CN106862068A (en) | A kind of circulating quartz sand dedusting screening plant | |
| CN105863532A (en) | Wind-power drill-hole residue discharging and dust removing device | |
| CN108005600A (en) | A kind of vacuum type enclosed vibratory screen | |
| CN207667356U (en) | Horizontal type multi-function natural gas desander | |
| CA2766376C (en) | Carbon retention screen with variable discharge head | |
| CN108222869A (en) | A kind of closed under balance pressure drilling Ground Operation method of safety and environmental protection | |
| CN204034491U (en) | Screening operation dedusting and purifying device | |
| CN108104745A (en) | A kind of safety and environmental protection sealing and circulating drilling well Ground Operation method | |
| CN206951739U (en) | Cleaning oil tank system | |
| CN205886527U (en) | Solid -liquid separation in -process gas collection's closed circuit inner circulating device | |
| CN104837570A (en) | Improved shaker table with inertial gas/fluid separation means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180622 |
|
| RJ01 | Rejection of invention patent application after publication |