EP0136369A1 - Filtre pour conduite de retour - Google Patents
Filtre pour conduite de retour Download PDFInfo
- Publication number
- EP0136369A1 EP0136369A1 EP83109906A EP83109906A EP0136369A1 EP 0136369 A1 EP0136369 A1 EP 0136369A1 EP 83109906 A EP83109906 A EP 83109906A EP 83109906 A EP83109906 A EP 83109906A EP 0136369 A1 EP0136369 A1 EP 0136369A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubular section
- tank portion
- fluid
- flow
- tank
- 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.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 claims abstract description 37
- 238000005553 drilling Methods 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 239000007787 solid Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 description 18
- 239000000463 material Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- JZUFKLXOESDKRF-UHFFFAOYSA-N Chlorothiazide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC2=C1NCNS2(=O)=O JZUFKLXOESDKRF-UHFFFAOYSA-N 0.000 description 7
- 239000002245 particle Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 206010035148 Plague Diseases 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
Definitions
- the present invention relates to off-shore drilling equipment. More particularly, the present invention relates to a device for filtering the drilling mud and cuttings that are brought to the well head to be recirculated through a flow line.
- cuttings and other debris from the drill bit down within the drill hole are brought up to the surface by means of pumping drilling mud under pressure down the drill pipe, into the drill hole, and circulating the mud along with the cuttings and other materials back to the surface through the exterior casing.
- the mud, cuttings and other material are routed up the casing through the well head into a flow line which angularly allows the mud to flow away from the drilling site to be separated from the cuttings in separators and recirculated under pressure back down into the holes for use once more.
- the preferred embodiment of the apparatus of the present invention solves the problem as outlined in the previous section in a straightforward and simple matter.
- a sub-unit which is fixedly attachable to the top portion of the hydril, for example, to receive the flow of mud and cuttings from within the hole as it is pumped upward.
- the apparatus contains a flow conveying tubular section which is sealably attachable at its lower end to the hydril and open ended at its upper end for allowing fluid flow therethrough.
- a plurality of slotted openings circumferentially spaced around the upper portion of the tubular section for being the primary filter means for filtering the cuttings from the well hole.
- an outer tank portion which comprises a floor section sealably and integrally attached to the outer circumferential wall of the tubular section and having a wall portion defining an enclosure tank, with the tank having an upper, open-ended fluid conveying tube or flow line angularly extending out of and away from its upper side wall.
- the upper end of the tank portion is fixedly connected to the upper end of the tubular portion via a secondary filtering means, which could be a grading, or a circular plate having a series of' slotted openings or perforations therethrough.
- the drilling mud and other materials would flow upward through the well head would flow through the tubular portion which is connected to the hydril, and that major portion of the flow would filter out through the slotted openings in the wall of the tubular portion and into the tank portion and be conveyed out of the flow line.
- Those very large cuttings and debree which would not filter out of the primary filter means or slotted openings, would flow through the top of the tubular portion and, being unable to filter back through the top plate portion would slide off of the top portion and would be disallowed from flowing into the flow line.
- the grading or perforations in the top plate portion would allow liquid or other small cuttings which had travelled up through the section with the larger cuttings and debree would be allowed to reenter the tank portion for flow conveying into the flow line, while the larger debree and cuttings would be unable to reenter the tank portion and simply fall to the side, thus preventing clogging of the flow line by these objects.
- the further object of the present invention is to provide a primary filtering means for disallowing certain size chunks of debris and cuttings from flowing into the flow line;
- FIGs 1 through 4 illustrate the preferred embodiment of the apparatus of the present invention generally designated by Numeral 10.
- apparatus 10 would generally comprise an elongated tubular portion 12, which would ! connect, preferably to the top portion of a hydril 14 as seen in Figure 1.
- connection between apparatus 10 and.hydril 14 would be a series of bolts 15 securedly attached on to the flange base portion 16 of apparatus 10 to create a seal between apparatus 10 and hydril 14.
- Tubular portion 12 would be open ended at its upper end 18, and would allow fluid flow therethrough being a fluid flow conveying section.
- a drill pipe 20 is illustrated as running down the center of tubular portion 12, wherethrough drilling mud and other materials are pumped under pressure down the drill hole.
- the diameter of a average well casing that being 20 inches in diameter
- the diameter of the drill pipe would be in the neighborhood of 6 inches, therefore allowing adequate space between the drill pipe 20 and the tubular portion 12 for accommodating the flow of drilling mud out of the drill hole as it is pumped through during drilling operations.
- apparatus 10 is located between the well head deck and the drill floor.
- tubular portion 12 would be enveloped near its upper most end by tank portion 22.
- Tank portion 22 would, in the preferred embodiment, as illustrated in Figures 2 and 3, would extend from a point slightly below the upper most end of tubular portion 12 down to a point 21 approximately half way down the length of tubular portion 12.
- tank portion 22 would be circular although it could be various other shapes, and would be sealably connected onto tubular portion 12 via a bottom plate portion 24 integrally attached to the wall 23 of tank portion 22 and circumferentially connected onto the exterior wall of tubular portion 12, thus forming a tank incapsulating substantially the upper half of tubular portion 12.
- Extending outward from the upper most portion of wall 23 of tank portion 22 would be fluid conveying tube 30, which would convey fluid from within tank portion 22 out of tank 22, being angulated downward and away from tank portion 22, as seen in Figures 1 & 3.
- tank portion 22 would be fixedly attached to the upper end of tubular portion 12 via a grading 31 which would define a secondary filter or sieve means 25 between tubular portion 12 and the wall 23 of tank portion 22, as seen in Figures 3 and 4.
- the upper end portion 18 of tubular portion 12 is slightly higher than the upper end 33 of tank portion 22, so that the strain or sieve means 25 as defined by the grating 31, would define an angulated surface descending away from tubular portion 12, preferably at a 20 to 30 degree angle.
- this secondary, angulated sieve means 25 would, while allowing fluid and small particles and debris to filter or strain through grading 31, would disallow debris or the like of substantial size to slide off of grading 31 and thus prevent the return of said material back into the tank portion 22 and thus further disallow clogging of flow line 30.
- tubular portion 12 which extends from the floor 24 of tank portion 22 up through the top end of tank 22 would provide the primary filtering means 36 comprising a plurality of slotted vents or cuts 37 circumferentially spaced around the wall of tubular portion 12 for conveying fluid from within tubular portion 12 into tank 22 as fluid moves up tubular portion 12 as indicated by arrows 42 in Figure 2.
- these slotted vents 37 would be preferably one foot in length by one inch in width and would be spaced approximately 2 inches apart. They would be set up in four rows along the length of that section of tubular portion 12 as previously defined.
- slots 37 which comprise the primary filter means 36, would serve to capture the major portion of the mixture of fluid and mud as it moves upward through tubular portion 12 into tank portion 22 of apparatus 10 as indicated by arrows 40"in Figure 2. That portion, during the process, the flow of the admixture as indicated by arrows 40, would continuously create a turbulated state of admixture within tank portion 22. That admixture in tank 22 would fill tank 22 until the level of fluid would reach the flow conveying tube 30 at which point the admixture would be directed outward up tank 22 in flow 30 into shakers for further filtering.
- the primary filter means 36 would allow the greater amount of the admixture to filter therethrough for conveying into flow line 30, without having to spill out of the open ended end 18 of tubular portion 12.
- That portion of the admixture which would then be of such a size to be strained through grading 31 would be allowed to do so and would then be re-emptied into tank portion 22 and out of flow line 30, and that material in the admixture which would be to large to sieve between grading 31 would simply incur grading 31 as the secondary filter means 25 and, because of the angulated position of grading 31 (in the preferred embodiment 20 to 30° of the horizontal) would simply slide off of apparatus 10 onto the drill floor or into the water to be swept or carried away at a later time.
- FIG 4 illustrates a top view along lines 4-4 of Figure 3 of apparatus 10.
- grading 31 would be substantially positioned between the outer wall of tubular portion 12 and the outer wall of tank portion 22.
- the entire apparatus could be constructed of metal, and the grading 31 would be a common grading known in other, art.
- the tank portion of the apparatus would be substantially 6 feet in length and 42 inches in width, with the inner tubular portion being essentially the same diameter as drill pipe, that being 20 inches and diameter.
- Figures 5 and 6 illustrate a top view of alternative embodiments of the secondary filter means 25, which is illustrated in Figures 5 and 6 could be a solid plate angularly extending from the top portion of tubular portion 12 to the top portion of the wall of tank 22 and integrally attached thereto through welding or the like.
- This plate portion could be perforated with a plurality of ports 44 as seen in Figure 5 for refiltering that portion of the admixture which has moved out of the top of tubular portion 12 for reconveyance into flow line 30, or, as seen in Figure 6, secondary filter means 25 could be a plate having a series of slotted, curved openings 36 positioned around the entire circumference of plate 25 for filtering once more.
- the primary filter means in the apparatus would be the primary filtering means 36 comprising the plurality of slotted vents or cuts 37, wherein most if not all of the fluid flowing up through tubular portion 12 would be initially filtered into tank portion 22.
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)
- Filtration Of Liquid (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP83109906A EP0136369A1 (fr) | 1983-10-04 | 1983-10-04 | Filtre pour conduite de retour |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP83109906A EP0136369A1 (fr) | 1983-10-04 | 1983-10-04 | Filtre pour conduite de retour |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0136369A1 true EP0136369A1 (fr) | 1985-04-10 |
Family
ID=8190719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83109906A Withdrawn EP0136369A1 (fr) | 1983-10-04 | 1983-10-04 | Filtre pour conduite de retour |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0136369A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998041732A1 (fr) * | 1997-03-18 | 1998-09-24 | Total | Dispositif de tete de puits pour la retention des particules solides entrainees par le fluide de production |
| WO2005049958A1 (fr) * | 2003-11-21 | 2005-06-02 | Agr Services | Dispositif d'extraction et de filtrage d'un fluide de forage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE467270C (de) * | 1928-10-22 | Franz Von Reiche | Strasseneinlauf mit Vorrichtung zum Abfangen der Schmutzstoffe bei geringem Abwasserzufluss | |
| US2514585A (en) * | 1945-06-09 | 1950-07-11 | Lester Callahan | Method for drilling wells |
| US3789992A (en) * | 1971-11-08 | 1974-02-05 | Taprogge L | Screen installation for separating solids from liquid streams in pipelines |
| US3880762A (en) * | 1973-11-19 | 1975-04-29 | Roger Francis Wise | Separator for cuttings |
| US4220207A (en) * | 1978-10-31 | 1980-09-02 | Standard Oil Company (Indiana) | Seafloor diverter |
-
1983
- 1983-10-04 EP EP83109906A patent/EP0136369A1/fr not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE467270C (de) * | 1928-10-22 | Franz Von Reiche | Strasseneinlauf mit Vorrichtung zum Abfangen der Schmutzstoffe bei geringem Abwasserzufluss | |
| US2514585A (en) * | 1945-06-09 | 1950-07-11 | Lester Callahan | Method for drilling wells |
| US3789992A (en) * | 1971-11-08 | 1974-02-05 | Taprogge L | Screen installation for separating solids from liquid streams in pipelines |
| US3880762A (en) * | 1973-11-19 | 1975-04-29 | Roger Francis Wise | Separator for cuttings |
| US4220207A (en) * | 1978-10-31 | 1980-09-02 | Standard Oil Company (Indiana) | Seafloor diverter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998041732A1 (fr) * | 1997-03-18 | 1998-09-24 | Total | Dispositif de tete de puits pour la retention des particules solides entrainees par le fluide de production |
| FR2761109A1 (fr) * | 1997-03-18 | 1998-09-25 | Total Sa | Dispositif destine a equiper la tete d'un puits de production d'un fluide, en vue de retenir les particules solides entrainees par ce fluide |
| US6263970B1 (en) | 1997-03-18 | 2001-07-24 | Total Fina S.A. | Wellhead device for retaining the solid particles carried by the production fluid |
| WO2005049958A1 (fr) * | 2003-11-21 | 2005-06-02 | Agr Services | Dispositif d'extraction et de filtrage d'un fluide de forage |
| US7431081B2 (en) | 2003-11-21 | 2008-10-07 | Roger Stave | Device for removal and filtration of drilling fluid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
| 17P | Request for examination filed |
Effective date: 19850918 |
|
| 17Q | First examination report despatched |
Effective date: 19860820 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19880109 |