CN108104745A - Safe and environment-friendly closed circulation drilling ground operation method - Google Patents
Safe and environment-friendly closed circulation drilling ground operation method Download PDFInfo
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- CN108104745A CN108104745A CN201711422537.7A CN201711422537A CN108104745A CN 108104745 A CN108104745 A CN 108104745A CN 201711422537 A CN201711422537 A CN 201711422537A CN 108104745 A CN108104745 A CN 108104745A
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- China
- Prior art keywords
- gas
- drilling fluid
- drilling
- hydrogen sulfide
- closed box
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- 238000005553 drilling Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 54
- 239000007789 gas Substances 0.000 claims abstract description 47
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 34
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 33
- 239000011593 sulfur Substances 0.000 claims abstract description 27
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000003345 natural gas Substances 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 25
- 230000007613 environmental effect Effects 0.000 claims description 13
- 230000008030 elimination Effects 0.000 claims description 12
- 238000003379 elimination reaction Methods 0.000 claims description 12
- 239000002737 fuel gas Substances 0.000 claims description 10
- 239000005864 Sulphur Substances 0.000 claims description 7
- 230000003009 desulfurizing effect Effects 0.000 claims description 7
- 238000004073 vulcanization Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract 2
- 239000011435 rock Substances 0.000 abstract 1
- 230000000505 pernicious effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
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)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a safe and environment-friendly closed circulation drilling ground operation method, which relates to the field of underbalanced drilling operation of sulfur-containing oil and gas wells, and comprises the following steps: the first step is as follows: the drilling fluid flowing back from the well enters a gas-liquid two-phase separator after being subjected to pressure control by an automatic throttle manifold, and the gas containing hydrogen sulfide is separated; the second step is that: the drilling fluid returned by the two-phase separator enters a closed vibrating screen to separate the rock debris from the residual gas in the drilling fluid; the third step: the drilling fluid flowing out of the closed vibrating screen enters a closed circulating tank, hydrogen sulfide monitoring is carried out on the drilling fluid in the tank, and sulfur removal treatment is carried out after hydrogen sulfide is monitored; the fourth step: the drilling fluid returned from the closed circulation tank is pumped into the well by a drilling pump to implement closed circulation drilling; and (4) delivering the gas subjected to sulfur removal treatment to a combustible gas recovery device for recovery. By adopting the method, on one hand, the closed circulating separation and treatment of the sulfur-containing natural gas and the sulfur-containing drilling fluid can be realized, and on the other hand, the hydrogen sulfide removal effect can be obviously improved.
Description
Technical field
The present invention relates to sulfur crude gas well drillng operation fields, specifically relate to a kind of safety and environmental protection sealing and circulating drilling well
Ground Operation method is for surface technology flow and method in sulfur-bearing formation drillng operation.
Background technology
With oil-gas exploration further deeply, China at present Sichuan, Bohai Sea Gulf, Erdos, Tarim Basin and
The pernicious gases such as hydrogen sulfide are found that in the deep oil-gas layers such as Zhunger Basin, seriously hinder the exploration and development process on such stratum.
At present, China's sulfur Gas Fields gas yield accounts for the 60% of national gas yield, and wherein Sichuan Basin sulfur-containing gas yield accounts for total output
80%.Therefore, accelerating the development and application of sour gas reservoir helps to solve increase China's oil gas supply amount, ensures national energy security.
With the continuous exploitation of petroleum resources and increasingly failure, the probing that sulfur crude gas reservoir is carried out using conventional drilling technologies is faced with sternly
Weight leakage and the probing problems such as success rate is low, bore and meet accident overflow, pernicious gas can return to ground into pit shaft in sulfur crude gas reservoir
Face, ground system is in opening-wide state in drilling process at present, and after sulfur-containing oil-gas is recycled to ground, pernicious gas can freely volatilize
Into air harmful to human and environment, once and hydrogen sulfide content is exceeded will be unable to continue cycling through drilling, counter need to push well operations,
Normal drilling operation process has been seriously affected, has triggered Environmental Safety risk.
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
Row effectively control, the circulating and separating method to the closed separated sulfur-bearing formation underbalanced drilling liquid of stratum product progress；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, 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.
The content of the invention
It is contemplated that for the skill that safely and effectively can not separate and handle hydrogen sulfide in the circulatory system of existing drilling well ground
Art problem provides a kind of safety and environmental protection sealing and circulating drilling well Ground Operation method, and using this method, closed follow on the one hand can be achieved
Ring type separates and handles sulfur-containing gas and sulfur-bearing drilling fluid, another aspect hydrogen sulfide elimination effect and can be significantly improved.
The present invention is realized by using following technical proposals：
A kind of safety and environmental protection sealing and circulating drilling well Ground Operation method, it is characterised in that step is as follows：
The first step：The drilling fluid returned out in well enters gas-liquid two-phase separator after flowing through self-choke manifold pressure control, will contain sulphur
Change the gas separation of hydrogen；
Second step：The drilling fluid that two phase separator returns out enters enclosed vibratory screen, by remaining gas in landwaste and drilling fluid into
Row separation；
3rd step：The drilling fluid of enclosed vibratory screen outflow enters sealing and circulating tank, and hydrogen sulfide monitoring is carried out to the drilling fluid in tank,
Sulphur removal processing is carried out after monitoring hydrogen sulfide；
4th step：The drilling fluid that sealing and circulating tank returns out is pumped into implementation sealing and circulating drilling well in well by drilling pump；
The gas isolated through two phase separator and the gas isolated through enclosed vibratory screen are sent into desulfurizing device and carry out sulphur removal
Processing, the gas through removing sulphuring treatment are sent into fuel gas retracting device.
The fuel gas retracting device includes sequentially connected dehydration device, compressor set and natural gas storage tank.
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 arranged at 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.
It is recycled through the landwaste that enclosed vibratory screen Separation by vibration goes out through landwaste retracting device.
By above-mentioned technological process, the hydrogen sulfide pernicious gas that underground enters is eliminated, and personnel will not be caused after igniting
Injury and environment pollute, and realize the safety and environmental protection operation of sealing and circulating drilling well.
Compared with prior art, what the present invention was reached has the beneficial effect that：
1st, in the present invention, enclosed vibratory screen is entered using the drilling fluid returned out through two phase separator, will be remained in landwaste and drilling fluid
Remaining gas is separated, and the drilling fluid that sealing and circulating tank returns out then is pumped into implementation sealing and circulating brill in well by drilling pump
Well, while the gas isolated through two phase separator and the gas isolated through enclosed vibratory screen are sent into desulfurizing device and removed
Sulphuring treatment, the gas through removing sulphuring treatment are sent into the recycling of fuel gas retracting device.Such technological process, with prior art phase
Than, drilling fluid be constantly in it is closed during, when treated, hydrogen sulfide will not be directly exposed in air, so as to ensure that place
The life security of reason personnel.
It 2nd,, will be in drilling fluid using enclosed vibratory screen to the vibration of liquid and the suction function of vacuum pump in the present invention
Hydrogen sulfide gas is precipitated, and is taken away in closed environment by vacuum pump, realizes effective removing of hydrogen sulfide in drilling fluid, ensures
Personnel and equipment safety.
3rd, 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 greatest extent exclusion drilling fluid and landwaste without hydrogen sulfide.
4th, in the present invention, the fuel gas by sulphur removal passes through fuel gas retracting device（Compressor set and natural gas are deposited
Storage tank）It is recycled, avoids waste and the air environmental pollution of combustion of natural gas, prevent live CO2Environmental protection is realized in discharge
Operation.
5th, 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 process flow chart of the present invention；
Fig. 2 is the structure diagram of enclosed vibratory screen.
It is marked in figure：
Self-choke manifold 1, two phase separator 2, enclosed vibratory screen 3, sealing and circulating tank 4, desulfurizing device 5, fuel gas recycling
Device 6, landwaste retracting device 7, inlet 8, vulcanization HydroNit sensor 9, sulfur elimination sprinkling mouth 10, vacuum pump 11, debris mechanism
12nd, fluid reservoir 13, closed box 14, vibration screen 15.
Specific embodiment
Embodiment 1
As the better embodiment of the present invention, it discloses a kind of safety and environmental protection sealing and circulating drilling well Ground Operation method,
Its step are as follows：
The first step：The drilling fluid returned out in well enters two phase separator 2 after flowing through 1 pressure control of self-choke manifold, will contain vulcanization
The gas separation of hydrogen；Separated sulfurous gas is recycled after small-sized 5 sulphur removal of desulfurizing device by fuel gas retracting device 6；
Second step：The drilling fluid that two phase separator 2 returns out enters enclosed vibratory screen 3, will be remaining a small amount of in landwaste and drilling fluid
Gas is effectively separated；The separated a small amount of sulfurous gas of enclosed vibratory screen 3 is recycled after small-sized desulfurizing device 5 by gas
Device 6 recycles, and 3 separated landwaste of enclosed vibratory screen is recycled by landwaste device 7；
3rd step：The drilling fluid that enclosed vibratory screen 3 flows out enters sealing and circulating tank 4, and hydrogen sulfide prison is carried out to the drilling fluid in tank
It surveys, sulphur removal processing is carried out after monitoring hydrogen sulfide；
4th step：The clean drilling fluid that sealing and circulating tank 4 returns out is pumped into implementation sealing and circulating drilling well in well by drilling pump.
In this example, vibrating screen of the prior art may be employed in enclosed vibratory screen, as long as vibrating screen is closed.
In this example, used self-choke manifold, desulfurizing device, gas concentration unit and landwaste retracting device are this
The prior art in field, details are not described herein.
Embodiment 2
As the present invention preferred forms, on the basis of embodiment, used enclosed vibratory screen include inlet,
Vulcanize HydroNit sensor, sulfur elimination sprinkling mouth, vacuum pump, debris mechanism, fluid reservoir, closed box and vibration screen；The storage
Flow container is arranged at the lower section of closed box；The inlet and sulfur elimination sprinkling mouth are provided on closed box；It is provided in closed box
The vibration screen and debris mechanism, one end of vibration screen are connected with the inlet, vibration screen tilting arrangement
In closed box, the vibration screen tilting, which is arranged in closed box, to be referred to：Vibration screen is towards one end of the inlet
Higher, the relatively low tilting arrangement of the other end, debris mechanism is located at the lower section of the vibration screen；On the closed box
The vulcanization HydroNit sensor of concentration of hydrogen sulfide in detection closed box is provided with, vacuum pump is connected with the closed box.In closed underbalance
In construction, the drilling fluid of sulfide hydrogen and landwaste by inlet 8 into after vacuum type enclosed vibratory screen, on vibration screen 15
By vibration screen 15 separates landwaste and drilling fluid, and spiral chip removal machine structure 12 is dropped down onto under landwaste, is sent out by the mechanism
Enclosed vibratory screen；And drilling fluid then filters the fluid reservoir 13 that sieve enters lower section, and circulating tank is pumped by liquid pump；If drilling fluid
In the hydrogen sulfide gas that contains evaporated by the vibration of vibration screen 15, monitor that vacuum pump 11 will through vulcanizing HydroNit sensor 9
Start and extract a small amount of hydrogen sulfide gas of volatilization out, the gas of extraction recycled after removing sulphuring treatment, while sulfur elimination sprinkling mouth
10 can spray sulfur elimination on vibration screen 15, further remove drilling fluid and the hydrogen sulfide of landwaste surface attachment, utmostly
Guarantee does not have hydrogen sulfide leakage, so as to fulfill the closed separation of landwaste and drilling fluid, realizes sealing and circulating drilling well.
By above-mentioned technological process, the hydrogen sulfide pernicious gas that underground enters is eliminated, and fuel gas is recycled, no
Personnel and environment can be polluted, realize the safety and environmental protection operation of sealing and circulating drilling well.
Claims (5)
- A kind of 1. safety and environmental protection sealing and circulating drilling well Ground Operation method, it is characterised in that step is as follows：The first step：The drilling fluid returned out in well flows through self-choke manifold（1）Enter gas-liquid two-phase separator after pressure control（2）, will Gas separation containing hydrogen sulfide；Second step：Two phase separator（2）The drilling fluid returned out enters enclosed vibratory screen（3）, will be remaining in landwaste and drilling fluid Gas is separated；3rd step：Enclosed vibratory screen（3）The drilling fluid of outflow enters sealing and circulating tank（4）, the drilling fluid in tank is vulcanized Hydrogen monitors, and sulphur removal processing is carried out after monitoring hydrogen sulfide；4th step：Sealing and circulating tank（4）The drilling fluid returned out is pumped into implementation sealing and circulating drilling well in well by drilling pump；It will be through two phase separator（2）The gas isolated and through enclosed vibratory screen（3）The gas isolated is sent into desulfurizing device（5） It carries out except sulphuring treatment, the gas through removing sulphuring treatment is sent into fuel gas retracting device（6）Recycling.
- 2. a kind of safety and environmental protection sealing and circulating drilling well Ground Operation method according to claim 1, it is characterised in that：It is described Fuel gas retracting device include sequentially connected dehydration device, compressor set and natural gas storage tank.
- 3. a kind of safety and environmental protection sealing and circulating drilling well Ground Operation method according to claim 1, it is characterised in that：It is described Enclosed vibratory screen（3）Including inlet（8）, vulcanization HydroNit sensor（9）, sulfur elimination sprinkling mouth（10）, vacuum pump（11）, spiral row Consider mechanism to be worth doing（12）, fluid reservoir（13）, closed box（14）And vibration screen（15）；The fluid reservoir（13）It is arranged at closed box （14）Lower section；In closed box（14）On be provided with the inlet（8）Mouth is sprayed with sulfur elimination（10）；Closed box（14）Interior setting There is the vibration screen（15）With debris mechanism（12）, vibration screen（15）One end and the inlet（8）Connection, shakes Dynamic sieve（15）Tilting is arranged in closed box（14）It is interior, debris mechanism（12）Positioned at the vibration screen（15）Under Side；In the 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 the closed box（14）Connection.
- 4. a kind of safety and environmental protection sealing and circulating drilling well Ground Operation method according to claim 1, it is characterised in that：Through close Close vibrating screen（3）The landwaste that Separation by vibration goes out is through landwaste retracting device（7）Recycling.
- 5. a kind of safety and environmental protection sealing and circulating drilling well Ground Operation method according to claim 3, 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 |
|---|---|---|---|
| CN201711422537.7A CN108104745A (en) | 2017-12-25 | 2017-12-25 | Safe and environment-friendly closed circulation drilling ground operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711422537.7A CN108104745A (en) | 2017-12-25 | 2017-12-25 | Safe and environment-friendly closed circulation drilling ground operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108104745A true CN108104745A (en) | 2018-06-01 |
Family
ID=62212989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201711422537.7A Pending CN108104745A (en) | 2017-12-25 | 2017-12-25 | Safe and environment-friendly closed circulation drilling ground operation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206891A (en) * | 2019-11-06 | 2020-05-29 | 中国石油集团川庆钻探工程有限公司 | Closed automatic rock debris collecting device for sulfur-containing stratum |
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| 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 | Closed vibrating screen for petroleum drilling |
| 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 | Emergency treatment method for hydrogen sulfide in under-balanced drilling fluid ground circulation system |
| CN107165595A (en) * | 2017-07-12 | 2017-09-15 | 中国石油集团川庆钻探工程有限公司 | Method for hermetically removing harmful 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 | Drilling fluid hydrogen sulfide removing system |
-
2017
- 2017-12-25 CN CN201711422537.7A patent/CN108104745A/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 | Closed vibrating screen for petroleum drilling |
| 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 | Emergency treatment method for hydrogen sulfide in under-balanced drilling fluid ground circulation system |
| CN107165595A (en) * | 2017-07-12 | 2017-09-15 | 中国石油集团川庆钻探工程有限公司 | Method for hermetically removing harmful 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 | Drilling fluid hydrogen sulfide removing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206891A (en) * | 2019-11-06 | 2020-05-29 | 中国石油集团川庆钻探工程有限公司 | Closed automatic rock debris collecting device for sulfur-containing stratum |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180601 |
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