CA1177056A - Containing skirt for drilling fluid - Google Patents
Containing skirt for drilling fluidInfo
- Publication number
- CA1177056A CA1177056A CA000384449A CA384449A CA1177056A CA 1177056 A CA1177056 A CA 1177056A CA 000384449 A CA000384449 A CA 000384449A CA 384449 A CA384449 A CA 384449A CA 1177056 A CA1177056 A CA 1177056A
- Authority
- CA
- Canada
- Prior art keywords
- skirt
- drilling fluid
- mud
- contact
- adjacent
- 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
Landscapes
- Earth Drilling (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE A flexible drilling fluid skirt for well drilling use. The skirt is wrapped around a drill pipe connection before loosen-ing to contain pressurized spray of drilling fluid and direct the fluid to storage or for re-use.
Description
7~56 CONTAINING SKIRT rOR
, . . ~ _ RILLING F'LUID
The present inven-tion relates -to a con-tainmen-t skir-t for use during well drilling or prod-uction operation.
More particularly, the present invention rela-tes to a Elexible structure adap-ted to be wrapped around a well tool or pipe line connection and which prevents splattering and/or loss of well drilling fluid or mud during loosening of the connection.
Use of the wrapping skirt of -the invention also assis-ts in keep-ing the well site clean, increasing worker efficiency and reduc-ing the possibility of acciden-t and injury.
The use of well drilling fluid or mud or water during drilling operations is used -to increase the life of the drilling components and to flush the bore hole of crushed rock chips, sand, and the like. It is frequently necessary to connect and cliscon-nect various drill tools and ~rill pipe lengths and as -the drill-ing fluid or mud is often present under pressure within -these com-ponents, each loosening or disconne~-tion of the various components can result in a spla-ttering and/or loss of the drilli.ng mud and this is to be avoided i.E possible because of cost. ~nother :factor is that splattering of drillincJ fluid aro~nd a dr:ill site makes the area very slippery and -this increases worker accident and in~ury while at the same time lowering worker production. It is common practice to clean around a well site by using water but this procedure has a double disadvan-tage - it requires worker time, and in freezing conditions, a layer of ice builds up on the dri].l-ing platform making it even more difficult for the workers to eff-iciently perform their job. The presence of ice requires the ap-- - . .. . .
7a~
pl ication of sawdust or o-ther fric-tion .increasiny material and ~his increases cost and requires further worker eE~ort.
DESCRIPI'ION OF PRIOR ART
Present attempts to avoid this splat-tering and/or loss of drilling fluid involves the use of so-called "mud cans"
which are of solid metal construction which are placed around the pipe joint and which function to minimize splattering and loss of the relatively expensive drilling mud. A disadvantage of mud cans, however, is that they are large and heavy and cumbersome and the positioning and removal of these mud cans from around the pipe lengths is a time-consuming and strenuous job and when the mud cans are not required, they clutter up the drilling platform.
P~a~ .
The present invention avoids the difficulties inherent in the prior art devices by providing a flexible wrapping skirt which is lightweight in construction and which can easi.ly be handled by one or at most two men (depending upon the pressures involved) and which may be kept readily at hand for use.
The skirt wrapping according to the present inven-tion is preferably rnoldec1 of suitably .re.inforc~d rubber or p:Lastic compo5-itions which are durable in use and WhiCtl .retain their f:Lexibili-ty during freezing conditions.
The device of the invention has a flexible body portion which is provided on its outer surface with two handles which fac-ilitate positioning of the structure around a pipe tool joint.
When drilling fluid pressure within the drill line is minimal -the device can simply be held in positi.on by one worker duriny loos-ening and removal of the connection, but when greater pressures are involved one embodiment of -the present device includes suit-able locking means to securely position the wrapping around the --.2--.
v~
pipe connectiorl before the joint is loosenecl and separated. Thispositioning can quite easily be accomplishe~ in a minimum o -time by two workers, one worker by simpl~ using the handles provided b~ holding the wrapping in position an~ thei other worker securing -the locking means.
In one embodiment, the device is provided around the upper portion of its inner surEace with pipe contacting sealing means to pre~ent passage of pressurized drilliny mud upwardly between the wrapping and the pipe connection. This corltacting and sealing means will be positioned around the connection above the joint, and the downward skirting provided on the device will then direct drilling fluid or mud issuing from the joint downwardly -through the slip and flow nipples around the bore hole and thus back into the bore hole. This alone results in a saving of expen-sive drilling fluid or mud.
In the embodiment discussed above, channels or grooves are molded into the skirt enabling the drilling fll]id or mud under pressure to pass downwardly into the clrill hole.
In a further embodiment of the invention, pipe contact-ing and sealing means are provided on the inner sureace of the skirtin both the top and bo-ttom portions so -that sealincJ of -the skirt-ing around the connection occurs both above ancl helow the connec-tion joint. In this embodimen-t, tubing extends cen-trally from the skirt to convey drilling fluid or mud to suitable storage and/or reuse.
Vertical edges of the skirt wrapping may be provided with surfaces in the form of ribs and grooves or the like which when the skirt is wrapped around the drilling string, provide for further secure closure of the skirt around the connec-tion.
'7~ ;)5~i Oi::~JECTS OF THE PR:ESENT INVENTI(:)N
The principle object of the present invention is to provide a drilling fluid skir-t for use during well clrilling and production and which consists of a flexible skirt body portion adapted to be wrapped around a pipe eonneetion to eontained pres-surized spray of drilling fluid or mud during loosening OL the connection and whic.h is durable and of li.ght weight while provid-ing ease of use and convenience of storage.
A further more speci.fic object of the invention is to provide a drilling fluid skirt for well drilling use, and which is wrapped around a drill pipe or well tool connection having upper and lower connecting parts prior to loosening of the conneet-ing parts to contain pressured spray of drilling fluid, mud or wa-ter and minimize loss thereof.
The skirt comprises a flexible body portion of length greater than the circumference of -the conneetion a~out which it is adapted to be wrapped -to cover adjacen-t portions of the con-necting parts.
The skirt has an outer surface and handles provided on the outer suxface to faciLi-tate posi-tioning, -the skirt having an inner surfaee with at leas-t the upper po:rtion oE the inner surface being provided with sealing means for contact with Lhe upper connecting part to prevent passage of drill.ing fluid or mud or water therebetween, and discharge means for discharging drilling fluid or mud or water from within the skir-t.
In one embodiment the ski.rt is provided with upper and :Lower sealing means and a central discharge opening with associated connections and tubing to convey drilling fluid or mud to storage and/or re-use.
3~ .
- - . .
1 1'~'7(~5~;
BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
. . .
The presen-t inven-tion will now be defin~d in greater detail with reference -to the accompanying drawings wherein:
Figure 1 is a perspec-tive view showing the par-tial positioning of the present wrapping skirt around a pipe joint;
Figure 2 is a side view of the outer surface of the present skirt;
Figure 3 is a sectional view taken along line III~III of Figure 2, Figure 4 is a side view of -the inner surface of the present invention;
Figure 5 is a sec-tional view taken along line V-V of Figure 4;
Figure 6 is a view of one end of the structure as shown in Figure 2;
Figure 7 is a side view of a fur-ther embodiment of the present invention showing -the oute:r surface of the skirt;
20Figure 8 is a side view o:E the inner surface of the embodiment as shown in Figure 7;
Figure 9 is a perspective view of the embodiment shown in Figure 7;
Figure 10 is a view of one end of the embodiment shown 05~
in Figure 7;
Figure 11 illustrates in perspective view a further embodiment of the present invention partially positioned around a dril:L pipe joint;
Figure 12 is a side view o~ the outer surface of the embodiment as illustrated in Figure 11; and Figure 13 is a partially sectioned view showing the pre-sent skirt in position around a drill stem connection and in accord-ance with the embodiment as shown in Figure 11.
1 l) DETAILED DISCUSSION OF DRAWINGS
Reference will now ~e had to the accompanying drawings in detail, and wherein like re~erence numerals re~er to like parts.
The present invention is shown in Figure 1 by the num-eral 2 where it i.s partially wrapped around a drill pipe connec-tion consisting of upper 4 and lower 6 component parts. The upper and lower parts 4 and 6 may be drill pipe or drill pipe/pipe tool connections which as understood are threadedly secured together.
Figure 1 clearly shows the positioning oE the presen-t skirt arouncl the connection so that the joint 8 between the component parts 4 and 6 is covered by the skirting.
As will clearl.y be understood from accompanying Figures
, . . ~ _ RILLING F'LUID
The present inven-tion relates -to a con-tainmen-t skir-t for use during well drilling or prod-uction operation.
More particularly, the present invention rela-tes to a Elexible structure adap-ted to be wrapped around a well tool or pipe line connection and which prevents splattering and/or loss of well drilling fluid or mud during loosening of the connection.
Use of the wrapping skirt of -the invention also assis-ts in keep-ing the well site clean, increasing worker efficiency and reduc-ing the possibility of acciden-t and injury.
The use of well drilling fluid or mud or water during drilling operations is used -to increase the life of the drilling components and to flush the bore hole of crushed rock chips, sand, and the like. It is frequently necessary to connect and cliscon-nect various drill tools and ~rill pipe lengths and as -the drill-ing fluid or mud is often present under pressure within -these com-ponents, each loosening or disconne~-tion of the various components can result in a spla-ttering and/or loss of the drilli.ng mud and this is to be avoided i.E possible because of cost. ~nother :factor is that splattering of drillincJ fluid aro~nd a dr:ill site makes the area very slippery and -this increases worker accident and in~ury while at the same time lowering worker production. It is common practice to clean around a well site by using water but this procedure has a double disadvan-tage - it requires worker time, and in freezing conditions, a layer of ice builds up on the dri].l-ing platform making it even more difficult for the workers to eff-iciently perform their job. The presence of ice requires the ap-- - . .. . .
7a~
pl ication of sawdust or o-ther fric-tion .increasiny material and ~his increases cost and requires further worker eE~ort.
DESCRIPI'ION OF PRIOR ART
Present attempts to avoid this splat-tering and/or loss of drilling fluid involves the use of so-called "mud cans"
which are of solid metal construction which are placed around the pipe joint and which function to minimize splattering and loss of the relatively expensive drilling mud. A disadvantage of mud cans, however, is that they are large and heavy and cumbersome and the positioning and removal of these mud cans from around the pipe lengths is a time-consuming and strenuous job and when the mud cans are not required, they clutter up the drilling platform.
P~a~ .
The present invention avoids the difficulties inherent in the prior art devices by providing a flexible wrapping skirt which is lightweight in construction and which can easi.ly be handled by one or at most two men (depending upon the pressures involved) and which may be kept readily at hand for use.
The skirt wrapping according to the present inven-tion is preferably rnoldec1 of suitably .re.inforc~d rubber or p:Lastic compo5-itions which are durable in use and WhiCtl .retain their f:Lexibili-ty during freezing conditions.
The device of the invention has a flexible body portion which is provided on its outer surface with two handles which fac-ilitate positioning of the structure around a pipe tool joint.
When drilling fluid pressure within the drill line is minimal -the device can simply be held in positi.on by one worker duriny loos-ening and removal of the connection, but when greater pressures are involved one embodiment of -the present device includes suit-able locking means to securely position the wrapping around the --.2--.
v~
pipe connectiorl before the joint is loosenecl and separated. Thispositioning can quite easily be accomplishe~ in a minimum o -time by two workers, one worker by simpl~ using the handles provided b~ holding the wrapping in position an~ thei other worker securing -the locking means.
In one embodiment, the device is provided around the upper portion of its inner surEace with pipe contacting sealing means to pre~ent passage of pressurized drilliny mud upwardly between the wrapping and the pipe connection. This corltacting and sealing means will be positioned around the connection above the joint, and the downward skirting provided on the device will then direct drilling fluid or mud issuing from the joint downwardly -through the slip and flow nipples around the bore hole and thus back into the bore hole. This alone results in a saving of expen-sive drilling fluid or mud.
In the embodiment discussed above, channels or grooves are molded into the skirt enabling the drilling fll]id or mud under pressure to pass downwardly into the clrill hole.
In a further embodiment of the invention, pipe contact-ing and sealing means are provided on the inner sureace of the skirtin both the top and bo-ttom portions so -that sealincJ of -the skirt-ing around the connection occurs both above ancl helow the connec-tion joint. In this embodimen-t, tubing extends cen-trally from the skirt to convey drilling fluid or mud to suitable storage and/or reuse.
Vertical edges of the skirt wrapping may be provided with surfaces in the form of ribs and grooves or the like which when the skirt is wrapped around the drilling string, provide for further secure closure of the skirt around the connec-tion.
'7~ ;)5~i Oi::~JECTS OF THE PR:ESENT INVENTI(:)N
The principle object of the present invention is to provide a drilling fluid skir-t for use during well clrilling and production and which consists of a flexible skirt body portion adapted to be wrapped around a pipe eonneetion to eontained pres-surized spray of drilling fluid or mud during loosening OL the connection and whic.h is durable and of li.ght weight while provid-ing ease of use and convenience of storage.
A further more speci.fic object of the invention is to provide a drilling fluid skirt for well drilling use, and which is wrapped around a drill pipe or well tool connection having upper and lower connecting parts prior to loosening of the conneet-ing parts to contain pressured spray of drilling fluid, mud or wa-ter and minimize loss thereof.
The skirt comprises a flexible body portion of length greater than the circumference of -the conneetion a~out which it is adapted to be wrapped -to cover adjacen-t portions of the con-necting parts.
The skirt has an outer surface and handles provided on the outer suxface to faciLi-tate posi-tioning, -the skirt having an inner surfaee with at leas-t the upper po:rtion oE the inner surface being provided with sealing means for contact with Lhe upper connecting part to prevent passage of drill.ing fluid or mud or water therebetween, and discharge means for discharging drilling fluid or mud or water from within the skir-t.
In one embodiment the ski.rt is provided with upper and :Lower sealing means and a central discharge opening with associated connections and tubing to convey drilling fluid or mud to storage and/or re-use.
3~ .
- - . .
1 1'~'7(~5~;
BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
. . .
The presen-t inven-tion will now be defin~d in greater detail with reference -to the accompanying drawings wherein:
Figure 1 is a perspec-tive view showing the par-tial positioning of the present wrapping skirt around a pipe joint;
Figure 2 is a side view of the outer surface of the present skirt;
Figure 3 is a sectional view taken along line III~III of Figure 2, Figure 4 is a side view of -the inner surface of the present invention;
Figure 5 is a sec-tional view taken along line V-V of Figure 4;
Figure 6 is a view of one end of the structure as shown in Figure 2;
Figure 7 is a side view of a fur-ther embodiment of the present invention showing -the oute:r surface of the skirt;
20Figure 8 is a side view o:E the inner surface of the embodiment as shown in Figure 7;
Figure 9 is a perspective view of the embodiment shown in Figure 7;
Figure 10 is a view of one end of the embodiment shown 05~
in Figure 7;
Figure 11 illustrates in perspective view a further embodiment of the present invention partially positioned around a dril:L pipe joint;
Figure 12 is a side view o~ the outer surface of the embodiment as illustrated in Figure 11; and Figure 13 is a partially sectioned view showing the pre-sent skirt in position around a drill stem connection and in accord-ance with the embodiment as shown in Figure 11.
1 l) DETAILED DISCUSSION OF DRAWINGS
Reference will now ~e had to the accompanying drawings in detail, and wherein like re~erence numerals re~er to like parts.
The present invention is shown in Figure 1 by the num-eral 2 where it i.s partially wrapped around a drill pipe connec-tion consisting of upper 4 and lower 6 component parts. The upper and lower parts 4 and 6 may be drill pipe or drill pipe/pipe tool connections which as understood are threadedly secured together.
Figure 1 clearly shows the positioning oE the presen-t skirt arouncl the connection so that the joint 8 between the component parts 4 and 6 is covered by the skirting.
As will clearl.y be understood from accompanying Figures
2 through 6, the wrapping skirt 2 has a generally rectangular con-figuration having outer (Figure 2) and inner (~igure 4) surfaces, the outer surface being provided with handles 10 and 12 to facil-itate positioning of the structure around the pipe joint. The handles 10 and 12 may conveniently be of metallic cons-truction such as wire rope having a covering of vulcanized rubber or the like and the skirt itself is preferably of molded reinforced con-struction.
............. ~
.'7'î'0~S~
After the skirt is wrapped around the pipe joint as shown in Fiyur~ 1, it may be secured in position by sui-table lock-ing means as shown in Figures 2 and 3. In the specific embodiment shown in these Figures, the locking means consists of a pivotally mounted locking arm 14 which is adapted to be received in any of a number of receiving holes provided in me-tallic band 16, the actual hole which will be selected will of course be dependent upon the diameter of the pipe connection about which the skirt is positioned.
However, it will be appreciated that various types of locking ar-rangements could conveniently be used.
In the embodiments according to Figures 2 through 6, theupper portion of the skirt 2 has a molded protruding portion 18 aclapted to contact pipe part 4 during wrapping of the skirt to provide for a positive sealing connection. A slight variation of this molded protruding portion is shown in Figures 4 and 5 by numeral 20 but the purposes of portions 18 and 20 are the same.
To permit for the downward escape of pressurized drill-ing fluid or mud the inner surface o~ the skirt is provided with a number o-f vertical grooves or channels shown by ~umeral 22 ancl it will be appreciated that when the skirt is wrapped around the pipe connection that any fluid or mud issuiny from the joint will pass downwardly within the skirt to disch~rge back into the well bore.
Sealing means may also be provided along the vertical edges of the skirt so that these edges provide sealed mating when the skirt is positioned around the pipe connection. With reference to Figures 2 and 3, the outer surface of the skirt body may be provided with vertical ribs 24 which upon wrapping become engaged in groove 26 provided on the inner surface of the skir-t adjacen-t the other vertical edge.
S~
In the embodiment shown in Figures 4 and 5, this ver~
tical sealing arranyement may be accomplished by the p.rovision o~
sharpened ridges 28 adapted to meet with corresponding grooves 30 as shown clearly in Figure 5.
The embodiment as illustrated in Figures 7 through 10 inclusive is generally similar to the embodiment discussed above, but the upper sealing means in this embodimen-t differs somewhat from the sealing means discussed earlier. More specifically, the inner surface of the body portion 2 has a molded inwardly extending protrusion portion 32 which, when the skir-t is wrapped around the pipe is in sealing contact with the pipe connection. The outer surface of the skirt may then be provided with a molded indentation 34 to receive the end 36 of the protrusion 32 when the skirt is wrapped around the pipe connection to ensure a positive seal.
Although not specifically shown in Figures 7 through 10, suitable vertical sealing means such as 24, 26, 28, and 30, as shown in Figures 2 through 5 may conveniently be provided.
The embodimen-ts as discussed above with reference to Figures 2 through 10 inclusive all show -the use of the present skirt to direct a dri:Lling fluicl o:r mud downwarclly so that i-t :is direc-ted back into the drill hole.
Accompanying Figures 11 through'l3 show an embodiment of the invention wherein upper and lower seals are provided so that the drill. mud or fluid issuing from the connection is conveyed back -to storage and reuse.
The skirt as shown in Figu.re 11 is similar to the ar-rangement discussed earlier but in this embodiment a nipple 40 is centrally provided in the skirt body and suitable tubing connec-tion 42 and 44 convey drilling fluid to storage and/or re-use.
_~_ - - - . . ..
(15~i In -the embodiment as shown in E~'igures 11 and 12, seal-ing means are ~rovided cllong the upper and lower edges of -the skirt body. As shown in ~iguxe 12 r upper and lower protrusion por-tions 32 similar to -the arrangement shown in Figures 7 to lO may be used. Alternatively, and as shown in Figure 13, rubber seals 48 may be molding integrally with the skirt body on the inner sur-face of the skirt and which contact and seal against the pipe portions upon wrapping of the skirt in position.
A lower anti-life flange 50 may be provided a distance along the lower edge of the skirt body to assist in holding the skirt in position.
The vertical edge 52 of the skirt 2 may be bevelled as shown in Figure 12; and as shown in Figure 13 an elbow 46 may be p.rovided on nipple 40 to direct drilling fluid downwardly.
2n
............. ~
.'7'î'0~S~
After the skirt is wrapped around the pipe joint as shown in Fiyur~ 1, it may be secured in position by sui-table lock-ing means as shown in Figures 2 and 3. In the specific embodiment shown in these Figures, the locking means consists of a pivotally mounted locking arm 14 which is adapted to be received in any of a number of receiving holes provided in me-tallic band 16, the actual hole which will be selected will of course be dependent upon the diameter of the pipe connection about which the skirt is positioned.
However, it will be appreciated that various types of locking ar-rangements could conveniently be used.
In the embodiments according to Figures 2 through 6, theupper portion of the skirt 2 has a molded protruding portion 18 aclapted to contact pipe part 4 during wrapping of the skirt to provide for a positive sealing connection. A slight variation of this molded protruding portion is shown in Figures 4 and 5 by numeral 20 but the purposes of portions 18 and 20 are the same.
To permit for the downward escape of pressurized drill-ing fluid or mud the inner surface o~ the skirt is provided with a number o-f vertical grooves or channels shown by ~umeral 22 ancl it will be appreciated that when the skirt is wrapped around the pipe connection that any fluid or mud issuiny from the joint will pass downwardly within the skirt to disch~rge back into the well bore.
Sealing means may also be provided along the vertical edges of the skirt so that these edges provide sealed mating when the skirt is positioned around the pipe connection. With reference to Figures 2 and 3, the outer surface of the skirt body may be provided with vertical ribs 24 which upon wrapping become engaged in groove 26 provided on the inner surface of the skir-t adjacen-t the other vertical edge.
S~
In the embodiment shown in Figures 4 and 5, this ver~
tical sealing arranyement may be accomplished by the p.rovision o~
sharpened ridges 28 adapted to meet with corresponding grooves 30 as shown clearly in Figure 5.
The embodiment as illustrated in Figures 7 through 10 inclusive is generally similar to the embodiment discussed above, but the upper sealing means in this embodimen-t differs somewhat from the sealing means discussed earlier. More specifically, the inner surface of the body portion 2 has a molded inwardly extending protrusion portion 32 which, when the skir-t is wrapped around the pipe is in sealing contact with the pipe connection. The outer surface of the skirt may then be provided with a molded indentation 34 to receive the end 36 of the protrusion 32 when the skirt is wrapped around the pipe connection to ensure a positive seal.
Although not specifically shown in Figures 7 through 10, suitable vertical sealing means such as 24, 26, 28, and 30, as shown in Figures 2 through 5 may conveniently be provided.
The embodimen-ts as discussed above with reference to Figures 2 through 10 inclusive all show -the use of the present skirt to direct a dri:Lling fluicl o:r mud downwarclly so that i-t :is direc-ted back into the drill hole.
Accompanying Figures 11 through'l3 show an embodiment of the invention wherein upper and lower seals are provided so that the drill. mud or fluid issuing from the connection is conveyed back -to storage and reuse.
The skirt as shown in Figu.re 11 is similar to the ar-rangement discussed earlier but in this embodiment a nipple 40 is centrally provided in the skirt body and suitable tubing connec-tion 42 and 44 convey drilling fluid to storage and/or re-use.
_~_ - - - . . ..
(15~i In -the embodiment as shown in E~'igures 11 and 12, seal-ing means are ~rovided cllong the upper and lower edges of -the skirt body. As shown in ~iguxe 12 r upper and lower protrusion por-tions 32 similar to -the arrangement shown in Figures 7 to lO may be used. Alternatively, and as shown in Figure 13, rubber seals 48 may be molding integrally with the skirt body on the inner sur-face of the skirt and which contact and seal against the pipe portions upon wrapping of the skirt in position.
A lower anti-life flange 50 may be provided a distance along the lower edge of the skirt body to assist in holding the skirt in position.
The vertical edge 52 of the skirt 2 may be bevelled as shown in Figure 12; and as shown in Figure 13 an elbow 46 may be p.rovided on nipple 40 to direct drilling fluid downwardly.
2n
3() _9_
Claims (8)
1. A drilling fluid skirt for well drilling means, and which is wrapped around a drill pipe or well tool connec-tion having upper and lower connecting parts prior to loosening of the connecting parts to contain pressured spray of drilling fluid, mud or water and minimize loss thereof, the skirt comprising a flexible body portion of length greater than the circumference of the connection about which it is adapted to be wrapped to cover adjacent portions of the connecting parts, the skirt having an outer surface and handles pro vided on the outer surface to facilitate positioning, the skirt having an inner surface with at least the upper portion of the inner surface being provided with sealing means for contact with the upper connecting part to prevent passage of drilling fluid or mud or water therebetween, and discharge means for discharging drilling fluid or mud or water from within the skirt.
2. A skirt according to claim 1, including means for locking the skirt in wrapped contact with the connection.
3. A skirt according to claim 1, the outer surface adjacent one vertical edge of the skirt having vertically extending grooves or ribs for mating contact with vertically extending ribs or grooves respectively provided on the inner surface of the skirt adjacent the other vertical edge.
4. A skirt according to claim 1, wherein the dis-charge means comprise downwardly open channels or grooves pro-vided on the inner surface.
5. A skirt according to claim 1, the sealing means comprising a horizontal projection on the inner surface of the top portion of the skirt for wrapping contact with the upper connecting part, the outer surface of the top portion having a horizontal groove to receive a portion of the horizontal pro-jection.
6. A skirt according to claim 1, the outer sur-face adjacent one vertical edge of the skirt having vertically extending sharpened ribs for mating contact with vertically extending sharpened ribs provided on the inner surface of the skirt adjacent the outer vertical edge.
7. A skirt according to claim 1, the top and bottom portions of the inner surface of the skirt having seal-ing means for respective contact with the upper and lower connect-ing parts during wrapping to prevent passage of drilling fluid, mud or water therebetween, the discharge means comprising a discharge opening provided centrally in the skirt between the upper and lower sealing means.
8. A skirt according to claim 7, including tubing means connected to the discharge opening to conduct drilling fluid, mud or water for re-use or storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000384449A CA1177056A (en) | 1981-08-24 | 1981-08-24 | Containing skirt for drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000384449A CA1177056A (en) | 1981-08-24 | 1981-08-24 | Containing skirt for drilling fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1177056A true CA1177056A (en) | 1984-10-30 |
Family
ID=4120773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000384449A Expired CA1177056A (en) | 1981-08-24 | 1981-08-24 | Containing skirt for drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1177056A (en) |
-
1981
- 1981-08-24 CA CA000384449A patent/CA1177056A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5121796A (en) | Oil well spill trough | |
| US5329740A (en) | Concrete repairing agent injection plug | |
| US4355826A (en) | Containment skirt for drilling fluid | |
| CA1177056A (en) | Containing skirt for drilling fluid | |
| CA2140085A1 (en) | Grease applicator for a drill shaft | |
| US560986A (en) | Oil-saving attachment | |
| US4362210A (en) | Friction hold wear bushing | |
| CN110173605A (en) | A kind of pipeline strength rehabilitation method and apparatus | |
| RU2020129C1 (en) | Container for fluids | |
| CN206448797U (en) | A kind of oil well blowout-prevention oil-scraping device | |
| CA1176454A (en) | Applicator for spraying liquid chemical onto drill pipe | |
| CN206220910U (en) | Well testing blowout preventer | |
| CN211116092U (en) | Tunnel construction is with dust removal watering curing means | |
| JP7140088B2 (en) | Jig for connecting pipes and pipe connection method | |
| CN2241772Y (en) | Non-contact pneumatic mud scraper | |
| CN210049849U (en) | Cleaning trolley for assisting wellhead operation | |
| CN210562244U (en) | Sealing device for joint of inspection well and shaft | |
| CN211143654U (en) | Mortar spray pipe | |
| CN208587651U (en) | A kind of pipeline of oil production sealing shroud | |
| CN211396853U (en) | Be used for steel pipe concrete structure transmission of electricity high tower flange leak protection thick liquid construction structures | |
| CN210768761U (en) | Coal mine drilling tool with efficient dust removal and cooling functions | |
| CN207332810U (en) | A kind of well head drainage blowdown apparatus | |
| CN207106068U (en) | A kind of tire bead arbor press spreading mechanism | |
| CN210483615U (en) | Well head cleaning and protecting device for pressure-controlled drilling | |
| CN208587110U (en) | Interior six sides attachment device between drilling rod and drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20011030 |