CA1149775A - Apparatus for the preparation of drilling mud - Google Patents
Apparatus for the preparation of drilling mudInfo
- Publication number
- CA1149775A CA1149775A CA000348708A CA348708A CA1149775A CA 1149775 A CA1149775 A CA 1149775A CA 000348708 A CA000348708 A CA 000348708A CA 348708 A CA348708 A CA 348708A CA 1149775 A CA1149775 A CA 1149775A
- Authority
- CA
- Canada
- Prior art keywords
- jet
- chamber
- drilling mud
- screw
- jet mixer
- 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
Links
Abstract
APPARATUS FOR THE PREPARATION OF DRILLING MUD
ABSTRACT
An apparatus for the preparation of drilling mud com-prises a loading hopper which has nozzles connected to a source of a mixing liquid and communicates with a chamber of a jet mixer. The chamber of the jet mixer accommodates a pipe communicating with a pump and having a jet nozzle.
The apparatus is provided with a diaphragm electrolyzer inserted in a line for feeding a mixing liquid, the interior of the negative electrode of the electrolyzer communicating with the nozzles of the loading hopper and with the pipe of the jet mixer.
The invention may be most advantageously used in the oil and gas production industry.
ABSTRACT
An apparatus for the preparation of drilling mud com-prises a loading hopper which has nozzles connected to a source of a mixing liquid and communicates with a chamber of a jet mixer. The chamber of the jet mixer accommodates a pipe communicating with a pump and having a jet nozzle.
The apparatus is provided with a diaphragm electrolyzer inserted in a line for feeding a mixing liquid, the interior of the negative electrode of the electrolyzer communicating with the nozzles of the loading hopper and with the pipe of the jet mixer.
The invention may be most advantageously used in the oil and gas production industry.
Description
APPARA~US FOR THE PREPARAq'ION OF DRILLING
MUD
~ be present invention relates to the well drilling technolDgy, and mor~ particularl~, to apparatus for the preparation of drilling mud.
The inven~ion may be mo~t advantageously used in the ~il and gas production.
The invention may also be used in the construction and chemical industries for the preparation of ~arious slur-ries and suspensions.
The production cycle for the preparation of drilling mud comprises batching starting solid materials into a mix-ing liquid, their stirring and subsequent dispersion of so-lid phas~ in the liquid phase. Quality of mixin~ o~ the phases, their bomogeneity and uniformity of distribution of solid phase particles over the ontire volume of the liquid phase ef~ect the quality o~` drilling mud being prepared.
Special r~quirements are imposed on apparatus for the prepa-ration o~` drilling mud which en~ure the homogeneity of the wat~r and clay su~pensiorl bein~ prepared 90 as to eliminate th~ possibility of the presence of lumps and ag~reeates of solid phase particles in drilling mud.
I~nown in the art are various apparatua for the prepa-ration of drilling mud ensurin~ mixing of solid and liquidphases to~;ether, sueh as blade clay stirrers, hydraulic mo-nitors, hydraulic jet mixers~ and the like.
Blade clay stirrer~ are in a widespread use at drill-i~g ~ites owing to their ~imple structure. However, ver~ low throughput capacity a~d large ~ize m~ke them outmoded.
Hydraulic monitors ensure high throughput capacity in the preparation o~ water and clay suspension, but the re-sultant mix is not homogeueous and contains a large quanti-ty o~ lumps and extraneous matter.
The mo~t rational apparatus ~or the preparation of drilling mud i9 a hydraulic jet mi~er (c~. US pate~t No.~867195, Cl. BQl F, i~sued on ~ecember 18, 1975), having a loadin~ hop-per communicating with a chamber of a jet mixer which ac-com~odat~ a pipe communicating with a jet pump and having jet nozzle. ~he loadin~ hopper i5 provided with noæzles ~or ~eeding liquid for creatinK a head and ior increasin~ the va-cuum components in the chamber of the jet mixer to whic~o-lid and liquid phase~ to be mixed are admitted. ~he hydrau-lic ~et mi~er eifect~ batching of the starting materials to the mi~ing liquid and the preparation of drilling mud, but the resultant drilling mud i~ of rather poor quality ~o that auxiliary equipment for en~urln~ high quality Or mi~ing oi the component~ Or drilling mud i~ required. ~hi~ i8 e~plained by a stron~ non-uniformity o~ the income o~ pulverule~t ma-terial to the mi~ing zone thu~ re~ulting in large batches o~ pulverule~t material having no time ior being wetted and mi~ed with the liquid and formi~ a thick suspension which results i~ clo~ing the cha~ber of the jet mixer~ Owing to reduced pre~sure3 in the jet mixer provided by the nozzle o~ the jet pipe under the action of a liquid jet, a large quantit~ of air ~ets to the apParatus together with the powd-er, the air hamperin~ the wetting o~ the powder with liquid and imparting hydrophoboic properties to the powder which, in turn, eifects the stability of density and homo~eneity of drilling mud and operation of pumps, and also impairs t~e quali ~ of chemical treatment and otner types of sub-se~uent treatment.
~ he chamber of the jet mixer is rapid ~ cloKged with lumps oi undispersed pulverulent material thus lowering the reliability of the apparatus. To eliminate the resultant clay plugs, high liquid pressure is required, that is piston pumps ensurinK hi~h pressur~3 are to be used.
It is an object o~ the invorltion to provide an appa-ratus ~or the preparation o~ drillinK mud h~ving means ~or ensurin~ high-~rade and intensive mi~inK Or solid and li-quid phases, their homo~eneity and unirormity of distribu-tion of solid phase particles over the entire volume of the liquid phase, eliminatin~ ~ormation of lumps of solid ph~se and ag~reg~ates of solid partioles.
Another object of the invention is to reduce the con-sumption of clay materials and chemical reagents and improve ~ ~ ~9'7~75 the t~rou~hput capaci-ty.
The present inve~tion resides i~ that an appar~tus ~or the preparation of drilling mud, comprising a loading hopper having nozzles which are co~nected to a source of mi~ing liquid and communicates with a chamber Or a jet mixer accommodating a pipe communicating with a jet pump and having a jet nozzle, accordin~ to the i~vention, the apparatu~ is provided with a diaphragm electrolyzer insert-ed in a line ~or feediog a mi~in~ liquid, the interior o~
the ne~ative ~lectrode o~ the electrolyzer communicating with the nozzles o~ the loading hopper and with the pipe oi the ~et mi~er.
This arranKement improves the adsorption and chemical activity o~ solid phase particles thus improvin~ the hydro-philization of their surface and the condition~ for mixing of ~olid particles with the liquid.
Th~ pipe o~ the jet mixer is pre~erably mounted ~or rotation an~ is provided on it~ surface with a helical blade formin~ a conveyor screw.
The provision o~ the jet pipe in the ~orm oi a con-veyor screw ensures uni~orm feedin~ of the thick ~raction o~ the suspension to the chamber Or the jet mixer.
~ he end turns of the screw blade are preferably ri~id-ly secured to the screw, and intermediate turns of the screw ~9 7 7 5 ~re a~ially movable. ~hi~ f acility eliminates clogging oi the chamber oi the jet mixer and interturn space o~ the screw with solid pha~s lumps and thick fracbion OI sus-pension ~o ~g to eliminate clogging in the cha~ber o~ the jet mixer.
The invention will now be described with reference to the ~pecific embodiment shown in the accompauying drawing illu~tratin~ an apparatus ~or the preparation of drilli~g mud.
An Apparatus ~or the preparation o~ drilling mud ac-cording to the invention comprises a chamber 1 o~ a jet mi~-er, which communicates with a loading hopper 2. The chamber 1 of the j~t mixer accommodate~ a rot~table pipe having a jet nozzle a~d provided oa it~ surface with a helical blade for-ming a conveyor sorew 3 which ensure~ uni~orm ~eeding of t~e thick fraction o~ the suspension to the chamber 1 of the jet mixer. ~nd turns 4 o~ the blade o~ the ~crew 3 are ri-gidly ~ecured to the screw. Intermediate turns 5 of the ~crew3 are axially movable with a play 6 thus eliminating clogg-in~ of the chamber 1 o~ the jet mi~er and interturn ~pace of the screw 3 with lumps of solid phase and thick fraction of ~uspension. The loading hopper 2 has nozzle~ 7 conne¢ted to a source o~ a mixic~ liquid (not shown) to ensure ~eedlng o~ ~n additional batch Or a mixing liquid at an increased ~9~;'75 ~6--pH ~incrqa~ed alkalinity) ~or pre-wetting solid phese ied through a net iilter 9 from bags which are out open by mean~
0~ a mill 8. The ~c~ew 3 is rot~ted by a drive 10. A pump 11 ieeds working liquid to the screw ~. The prep~red drilli~g mud is delivered through a pipe 12 of the chamber 1 of the ~et mixer.
To improve tha adsorption a~d chemical activity of solid phase particle~, hence, to enhance their hydrophilic capacity so as to improve the conditions for m$2in~ solid pha~e particles with a mixing liquid, the apparatus is pro-vided with a diaphragm electrolyzer 13 inserted in a line ior ieeding a mixing li~uid. The diaphragm electrolyzer 13 comprises an anode 14 and a cathode 15 which are separat-ed by a semipermeable diaphragm 16. An interior 17 oi the ne~ative electrode (cathode 15) in which the major volume o~ the mi~in~ liquid is treated to increase its alkalinity communicatQs with the nozzle~ 7 and with th~ inlet oi the s¢rew 3, and an interior 18 of the po~itively charged élect-rode (anode 14) where products oL oxidizing reaction~ areformed communicate~ wi~h a drain pipe 19 ~or removing ~uch produot~, The apparatus for t~le preparation of drilling mud func-tions i~ the ~ollowing manner.
~1~9~75 Solid pulverulent phase is fed to the loading hopper 2 through the net iilter 9 on which extraneous matter remains (9uch as re~idues o~ bag material or too coarse lumps of ~o-lid pha3e) Yrom bags which are cut open by means o~ the mill 8. At the same time, a mixi~g liquid is fed through the noz-zles 7 to the loading hopper 2, the liquid being pretreated in the interior 17 of the cathode 15 of the diaphragm elect-rolyzer 13. The mixing liquid passing tbrough the zone o~ the negatively charged electrode(cathode 15) is enriched with negatively charged hydroxyl groups oi the OH type as a re-sult of redox reactions occurring in the diaphragm electro-lyzer 13. An excess o~ hydroxyl groups in the mixing liquid increa~es it~ alkalinity which i~ characterized by a grow-inK pH o~ mixing liquid and contributes to an active reac-tion thereof with the sur~ace o~ solid phase particles. Hy-dration o~ solid pha~e particles oontribute~ to an increase in the adsorption and chemical activity of the particles 80 that lumps and aggreg~te~ o~ tha particles are dispersed into individual particles thue improving the conditions ~or prewetting of particles and their mixin~ with the mixing li-quid. ~hi~ i9 al~o ~aoilitAted by the mixing liquid leaving the nozzles 7 under a head~ which iill8 the loading hopper 2 to create a chaotic motion o~ ~ù~pension in the hopper ~o a~ to improve the conditions ~or pre-wetting and mixing.
However, the water and clay ~uspension is a sedimentary un---8--stable ~ystem so that ~ portion of SoLid ph~se settles down to th~ bottom of the loading hopper 2, that is into the chamber 1 of the jet mixer. Upon providing a hea~ o~ the working liquid fed along the acrew 3 pressure reduction oc-cur~ in the chamber 1 of the jet mi~er which contributes to the intake o~ the pretreated water and ~l~y suspension from the loading hopper 2 to the chamber 1 o~ the jet mi~-er where it i9 mixed with working liquid and admitted under the head to thc pipe7~o be delivered for use. ~he working liquid ma~ compri~e water, water containing dissolved che-mical reagents, or drilling mud which is to be enriched with clayey phase or a weighting agent.
Thickened suspension settling down to the bottom of the chamber 1 of the ~et mi~er can ~orm an obstacle in the form o~ lumps or plugs ~or a ~ree passa~e of premixed solid phase and mi~ing liguid to the zone o~ mixing with the work-inK liquid. ~lo avoid this, the screw 3 in the form of the jet pipe is driven ~or rotation 90 as to expell the thickened part of ~uspension by its turn~ 4,5 to the zone of mixing with working liquid. Jaulming o~ the screw 3 is eliminated owing to the axial play 6 o~ it~ i~termediate turns 5. When too thick suqpension or large lump o~ qolid phase accumulates between the turns 4,5, the intermediate turns 5 more apart without stopping rotation of the screw 3 until the thick part of suspen~ion i8 e~pelled to the zone of its mi~ing with _g_ ~rorking li~uid, wherea~ter the intermediate turn~ 5 again return back to t~e initial positio~ under the action of their i~herent elasticity.
MUD
~ be present invention relates to the well drilling technolDgy, and mor~ particularl~, to apparatus for the preparation of drilling mud.
The inven~ion may be mo~t advantageously used in the ~il and gas production.
The invention may also be used in the construction and chemical industries for the preparation of ~arious slur-ries and suspensions.
The production cycle for the preparation of drilling mud comprises batching starting solid materials into a mix-ing liquid, their stirring and subsequent dispersion of so-lid phas~ in the liquid phase. Quality of mixin~ o~ the phases, their bomogeneity and uniformity of distribution of solid phase particles over the ontire volume of the liquid phase ef~ect the quality o~` drilling mud being prepared.
Special r~quirements are imposed on apparatus for the prepa-ration o~` drilling mud which en~ure the homogeneity of the wat~r and clay su~pensiorl bein~ prepared 90 as to eliminate th~ possibility of the presence of lumps and ag~reeates of solid phase particles in drilling mud.
I~nown in the art are various apparatua for the prepa-ration of drilling mud ensurin~ mixing of solid and liquidphases to~;ether, sueh as blade clay stirrers, hydraulic mo-nitors, hydraulic jet mixers~ and the like.
Blade clay stirrer~ are in a widespread use at drill-i~g ~ites owing to their ~imple structure. However, ver~ low throughput capacity a~d large ~ize m~ke them outmoded.
Hydraulic monitors ensure high throughput capacity in the preparation o~ water and clay suspension, but the re-sultant mix is not homogeueous and contains a large quanti-ty o~ lumps and extraneous matter.
The mo~t rational apparatus ~or the preparation of drilling mud i9 a hydraulic jet mi~er (c~. US pate~t No.~867195, Cl. BQl F, i~sued on ~ecember 18, 1975), having a loadin~ hop-per communicating with a chamber of a jet mixer which ac-com~odat~ a pipe communicating with a jet pump and having jet nozzle. ~he loadin~ hopper i5 provided with noæzles ~or ~eeding liquid for creatinK a head and ior increasin~ the va-cuum components in the chamber of the jet mixer to whic~o-lid and liquid phase~ to be mixed are admitted. ~he hydrau-lic ~et mi~er eifect~ batching of the starting materials to the mi~ing liquid and the preparation of drilling mud, but the resultant drilling mud i~ of rather poor quality ~o that auxiliary equipment for en~urln~ high quality Or mi~ing oi the component~ Or drilling mud i~ required. ~hi~ i8 e~plained by a stron~ non-uniformity o~ the income o~ pulverule~t ma-terial to the mi~ing zone thu~ re~ulting in large batches o~ pulverule~t material having no time ior being wetted and mi~ed with the liquid and formi~ a thick suspension which results i~ clo~ing the cha~ber of the jet mixer~ Owing to reduced pre~sure3 in the jet mixer provided by the nozzle o~ the jet pipe under the action of a liquid jet, a large quantit~ of air ~ets to the apParatus together with the powd-er, the air hamperin~ the wetting o~ the powder with liquid and imparting hydrophoboic properties to the powder which, in turn, eifects the stability of density and homo~eneity of drilling mud and operation of pumps, and also impairs t~e quali ~ of chemical treatment and otner types of sub-se~uent treatment.
~ he chamber of the jet mixer is rapid ~ cloKged with lumps oi undispersed pulverulent material thus lowering the reliability of the apparatus. To eliminate the resultant clay plugs, high liquid pressure is required, that is piston pumps ensurinK hi~h pressur~3 are to be used.
It is an object o~ the invorltion to provide an appa-ratus ~or the preparation o~ drillinK mud h~ving means ~or ensurin~ high-~rade and intensive mi~inK Or solid and li-quid phases, their homo~eneity and unirormity of distribu-tion of solid phase particles over the entire volume of the liquid phase, eliminatin~ ~ormation of lumps of solid ph~se and ag~reg~ates of solid partioles.
Another object of the invention is to reduce the con-sumption of clay materials and chemical reagents and improve ~ ~ ~9'7~75 the t~rou~hput capaci-ty.
The present inve~tion resides i~ that an appar~tus ~or the preparation of drilling mud, comprising a loading hopper having nozzles which are co~nected to a source of mi~ing liquid and communicates with a chamber Or a jet mixer accommodating a pipe communicating with a jet pump and having a jet nozzle, accordin~ to the i~vention, the apparatu~ is provided with a diaphragm electrolyzer insert-ed in a line ~or feediog a mi~in~ liquid, the interior o~
the ne~ative ~lectrode o~ the electrolyzer communicating with the nozzles o~ the loading hopper and with the pipe oi the ~et mi~er.
This arranKement improves the adsorption and chemical activity o~ solid phase particles thus improvin~ the hydro-philization of their surface and the condition~ for mixing of ~olid particles with the liquid.
Th~ pipe o~ the jet mixer is pre~erably mounted ~or rotation an~ is provided on it~ surface with a helical blade formin~ a conveyor screw.
The provision o~ the jet pipe in the ~orm oi a con-veyor screw ensures uni~orm feedin~ of the thick ~raction o~ the suspension to the chamber Or the jet mixer.
~ he end turns of the screw blade are preferably ri~id-ly secured to the screw, and intermediate turns of the screw ~9 7 7 5 ~re a~ially movable. ~hi~ f acility eliminates clogging oi the chamber oi the jet mixer and interturn space o~ the screw with solid pha~s lumps and thick fracbion OI sus-pension ~o ~g to eliminate clogging in the cha~ber o~ the jet mixer.
The invention will now be described with reference to the ~pecific embodiment shown in the accompauying drawing illu~tratin~ an apparatus ~or the preparation of drilli~g mud.
An Apparatus ~or the preparation o~ drilling mud ac-cording to the invention comprises a chamber 1 o~ a jet mi~-er, which communicates with a loading hopper 2. The chamber 1 of the j~t mixer accommodate~ a rot~table pipe having a jet nozzle a~d provided oa it~ surface with a helical blade for-ming a conveyor sorew 3 which ensure~ uni~orm ~eeding of t~e thick fraction o~ the suspension to the chamber 1 of the jet mixer. ~nd turns 4 o~ the blade o~ the ~crew 3 are ri-gidly ~ecured to the screw. Intermediate turns 5 of the ~crew3 are axially movable with a play 6 thus eliminating clogg-in~ of the chamber 1 o~ the jet mi~er and interturn ~pace of the screw 3 with lumps of solid phase and thick fraction of ~uspension. The loading hopper 2 has nozzle~ 7 conne¢ted to a source o~ a mixic~ liquid (not shown) to ensure ~eedlng o~ ~n additional batch Or a mixing liquid at an increased ~9~;'75 ~6--pH ~incrqa~ed alkalinity) ~or pre-wetting solid phese ied through a net iilter 9 from bags which are out open by mean~
0~ a mill 8. The ~c~ew 3 is rot~ted by a drive 10. A pump 11 ieeds working liquid to the screw ~. The prep~red drilli~g mud is delivered through a pipe 12 of the chamber 1 of the ~et mixer.
To improve tha adsorption a~d chemical activity of solid phase particle~, hence, to enhance their hydrophilic capacity so as to improve the conditions for m$2in~ solid pha~e particles with a mixing liquid, the apparatus is pro-vided with a diaphragm electrolyzer 13 inserted in a line ior ieeding a mixing li~uid. The diaphragm electrolyzer 13 comprises an anode 14 and a cathode 15 which are separat-ed by a semipermeable diaphragm 16. An interior 17 oi the ne~ative electrode (cathode 15) in which the major volume o~ the mi~in~ liquid is treated to increase its alkalinity communicatQs with the nozzle~ 7 and with th~ inlet oi the s¢rew 3, and an interior 18 of the po~itively charged élect-rode (anode 14) where products oL oxidizing reaction~ areformed communicate~ wi~h a drain pipe 19 ~or removing ~uch produot~, The apparatus for t~le preparation of drilling mud func-tions i~ the ~ollowing manner.
~1~9~75 Solid pulverulent phase is fed to the loading hopper 2 through the net iilter 9 on which extraneous matter remains (9uch as re~idues o~ bag material or too coarse lumps of ~o-lid pha3e) Yrom bags which are cut open by means o~ the mill 8. At the same time, a mixi~g liquid is fed through the noz-zles 7 to the loading hopper 2, the liquid being pretreated in the interior 17 of the cathode 15 of the diaphragm elect-rolyzer 13. The mixing liquid passing tbrough the zone o~ the negatively charged electrode(cathode 15) is enriched with negatively charged hydroxyl groups oi the OH type as a re-sult of redox reactions occurring in the diaphragm electro-lyzer 13. An excess o~ hydroxyl groups in the mixing liquid increa~es it~ alkalinity which i~ characterized by a grow-inK pH o~ mixing liquid and contributes to an active reac-tion thereof with the sur~ace o~ solid phase particles. Hy-dration o~ solid pha~e particles oontribute~ to an increase in the adsorption and chemical activity of the particles 80 that lumps and aggreg~te~ o~ tha particles are dispersed into individual particles thue improving the conditions ~or prewetting of particles and their mixin~ with the mixing li-quid. ~hi~ i9 al~o ~aoilitAted by the mixing liquid leaving the nozzles 7 under a head~ which iill8 the loading hopper 2 to create a chaotic motion o~ ~ù~pension in the hopper ~o a~ to improve the conditions ~or pre-wetting and mixing.
However, the water and clay ~uspension is a sedimentary un---8--stable ~ystem so that ~ portion of SoLid ph~se settles down to th~ bottom of the loading hopper 2, that is into the chamber 1 of the jet mixer. Upon providing a hea~ o~ the working liquid fed along the acrew 3 pressure reduction oc-cur~ in the chamber 1 of the jet mi~er which contributes to the intake o~ the pretreated water and ~l~y suspension from the loading hopper 2 to the chamber 1 o~ the jet mi~-er where it i9 mixed with working liquid and admitted under the head to thc pipe7~o be delivered for use. ~he working liquid ma~ compri~e water, water containing dissolved che-mical reagents, or drilling mud which is to be enriched with clayey phase or a weighting agent.
Thickened suspension settling down to the bottom of the chamber 1 of the ~et mi~er can ~orm an obstacle in the form o~ lumps or plugs ~or a ~ree passa~e of premixed solid phase and mi~ing liguid to the zone o~ mixing with the work-inK liquid. ~lo avoid this, the screw 3 in the form of the jet pipe is driven ~or rotation 90 as to expell the thickened part of ~uspension by its turn~ 4,5 to the zone of mixing with working liquid. Jaulming o~ the screw 3 is eliminated owing to the axial play 6 o~ it~ i~termediate turns 5. When too thick suqpension or large lump o~ qolid phase accumulates between the turns 4,5, the intermediate turns 5 more apart without stopping rotation of the screw 3 until the thick part of suspen~ion i8 e~pelled to the zone of its mi~ing with _g_ ~rorking li~uid, wherea~ter the intermediate turn~ 5 again return back to t~e initial positio~ under the action of their i~herent elasticity.
Claims (3)
1. An apparatus for the preparation of drilling mud, comprising:
- a source of a mixing liquid;
- a chamber of a jet mixer;
- a pump;
- a pipe having a jet nozzle, which is accommodated in said chamber of the jet mixer and communicates with said pump;
- a loading hopper communicating with said chamber of the jet mixer;
- nozzles installed on said loading hopper and connect-ed to said source of a mixing liquid;
- a diaphragm electrolyzer inserted in said line for feeding a mixing liquid, the interior of the negative elect-rode of the diaphragm electrolyzer communicating with said nozzles of said loading hopper and said pipe of the jet mix-er.
- a source of a mixing liquid;
- a chamber of a jet mixer;
- a pump;
- a pipe having a jet nozzle, which is accommodated in said chamber of the jet mixer and communicates with said pump;
- a loading hopper communicating with said chamber of the jet mixer;
- nozzles installed on said loading hopper and connect-ed to said source of a mixing liquid;
- a diaphragm electrolyzer inserted in said line for feeding a mixing liquid, the interior of the negative elect-rode of the diaphragm electrolyzer communicating with said nozzles of said loading hopper and said pipe of the jet mix-er.
2. An apparatus according to Claim 1, wherein said pipe of the jet mixer is mounted for rotation and is pro-vided on its surface with a helical blade forming a con-veyor screw.
3. An apparatus according to Claim 2, wherein end turns of the blade of said screw are rigidly secured to the screw, and intermediate turns of the blade of/said screw are axially movable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000348708A CA1149775A (en) | 1980-03-28 | 1980-03-28 | Apparatus for the preparation of drilling mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000348708A CA1149775A (en) | 1980-03-28 | 1980-03-28 | Apparatus for the preparation of drilling mud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1149775A true CA1149775A (en) | 1983-07-12 |
Family
ID=4116588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000348708A Expired CA1149775A (en) | 1980-03-28 | 1980-03-28 | Apparatus for the preparation of drilling mud |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1149775A (en) |
-
1980
- 1980-03-28 CA CA000348708A patent/CA1149775A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2801208C2 (en) | ||
| CN1088393C (en) | Installation for mixing of liquid and solid matter | |
| CN111701485A (en) | Chemical liquid medicine ration ratio mixing stirring device | |
| US3326815A (en) | Process for the manufacture of aqueous clay suspensions | |
| US4118246A (en) | Process for producing clay slurries | |
| US5624550A (en) | Process for treating sludge and system for the same | |
| US4464479A (en) | Method for treating red mud | |
| US2386810A (en) | Gels comprising silica | |
| US3322683A (en) | Aqueous barium carbonate dispersions, process for their production, and dry pre-mix | |
| CA1149775A (en) | Apparatus for the preparation of drilling mud | |
| US1986301A (en) | Blending and air separation of | |
| US2915412A (en) | Method of handling and conditioning paper making clay for use | |
| DE1767332B2 (en) | Process for the production of finely divided, amorphous silicas with a high structure | |
| CN206121608U (en) | Chemical fertilizer agitating unit | |
| CN100334164C (en) | Method for preparing functional nano material using montmorillonite as carrier | |
| CN207671697U (en) | A kind of production system of smectite powder | |
| RU2101258C1 (en) | Method for producing bentonite powder | |
| JPS5946664B2 (en) | Kneading and dispersing machine | |
| CN219355943U (en) | Bentonite mixing arrangement | |
| US5161887A (en) | Process for producing an aqueous solution of difficult-to-dissolve, fine particle size particulate material | |
| CN220373547U (en) | Bentonite dosing unit of different qualities | |
| RU191747U1 (en) | INSTALLATION FOR PRODUCING LIQUID HUMIC BIOSTIMULANT | |
| GB1175561A (en) | Process and apparatus for making Agglomerates from Suspensions | |
| NL8001812A (en) | DEVICE FOR PREPARING DRILL MUD. | |
| US4238322A (en) | Apparatus for preparation of a sprayable precipitated silicic acid suspension |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |