US1891685A - Blow-out preventer attachment - Google Patents

Description

Dec. 20, 1932. J H, N c s 'ET AL 1,891,685

BLOW-OUT PREVENTER ATTACHMENT Filed Dec. 10. 1950 s Sheets-Sheet 1 I m MIMI E lnventorJ 7/56 17511 V was Z7677 ZZZwa M592 By J4 Dec. 20, 1932. S ET A 1,891,685

BLOW-OUT PREYENTER ATTACHMENT Filed Dec. 10. 1930 5 Sheets-Sheet 2 Z/KW 32 34 F 5 Inventors 1%? Envy 1V7 0Z5 F/PQV EJwaT f aszer A Home y Dec. 20, 1932. v J. H. NICKS ET AL w 1,891,685

BLOW-OUT PREVENTER ATTACHMENT Filed Dec.- 10. 1950 I 3 Sheets-Shet 5- A Home y -Patented '15... 2o, 1932 i J 1,891,685

UNITED STATES' PA EN OFFICE Application iiledDecember 10, 1930. Serial No. 501,420.

This invention relates generally to an imto screw-thread at into the preventer strucprovement in blow out preventer attachture 5 as shown. The adapter is formed with ments, adapted to lock the rams of a standa collar 11 which has a tapered screw threadard blow out preventerhead. I ed bore 12 for receiving the tapered nipple 13 p The object of this invention is to provide on the associated end of the locking housing 55 a device of this kind, whereby the rams may 14 of our attachment. Referring to Figures be quickly actuated and locked in well pres- 5 and 6, it will be seen that the housing 14 sure resisting position during the blow out consists of a cylindrical body comprising a of the well, wherebyto eliminate the slow and plain outer end 15' an inner end 16 on which dangerous process of manual manipulation, the tapered nipple 13 is formed. The ends 60 and to provide the further advantages which 15 and 16 are connected by upper and lower will be recognized herein. longitudinal members 17 and 18 having the i This and other objects and advantages, the cross section disclosed in Figure 7. The end nature of the invention, and its composition 15 "has a longitudinal bore 19 and the end porand arrangement and combination of parts tion 16 has a longitudinal bore 20 in alignwill be readily understood by any one acment with the bore 19.' Also in alignment qnainted with the art to whi h this invention with the bore 20 is an enlarged'recess 21 open relates upon consulting the following descriping inwardly of the end portion 16; The stem tion of the drawings, in which 22 has an annular groove 23 at its inward end Figure 1 is a general side elevational view 'for rotatable connection with the ram 24. showin an embodiment of our invention as{ From the point indicated at 23 to an inter-' sociate with the blowout preventer strucmediate portion of the stem, it is smooth to ture. r enable it to slide in the bore .20 in a snug Figure 2 is a partial longitudinal vertical manner and to be properly packed by a series sectional view through Figure 1. of packing rings 25 maintained in proper ad- Figure 3 is a similar view showing the ram justment by an adjusting nut 26 screw threadin the inward, blow out preventing position. ed as at 27 in the recess 21. Fromsaid inter- Figure 4 is a view similar to Figure 3 mediate point to the outer end portion of the showing the ram locked in said position. a V stem 22 it is screw threaded as at 28, and the cal. sectional view through one of the memportion 28 is formed to receive a wrench or bers of our improved attachment disclosing crank, or other operating lever, as at 29. The

the disposition of parts and their construcbore 19 in the outer end of the housing 14 is tion. sufficiently large to permit free sliding ofa Figure 6 is a detailed view of the housing. lock sleeve designated 30 Which i r w of the attachment. Y threadedlymounted on the screw threaded Figure 7 is atransverse vertical sectional portion 28 of the stem 22. The lock nut sleeve view taken approximately on the "line 7-7 is externally screw threaded at 31 to provide 40 of Figure 6. for the mounting thereon of a lock nut 32.

Referring in detail to the drawings the nu The lock nut 32 is placed on the sleeve 30 outmeral 5 designates generally the well head wardly of the outer end portion 15 of the .b1 wur preventerstructure, the numeral 6" housing 14. On the inner. end of the sleeve the tool projecting through the said struc- 30 disposed within the housing is an annular ture. the numeral 7 the pipe system for-conshoulder 33 adapted to be abutt'ed against the ducting the fluid from an associated pump inner face of the end portion 15 as will subfor actuating therams'of the blOWfOHtPIG- sequently be described. It should be noted venter. Y i

that the bore 19 is not threaded, but is smooth. The numeral 8 designates generally-one of In Figure 2 is shown the completely withthe attachments of the invention which com-' drawn position of the ram 24, whereas in prises the annular adapter 9 which is adapted Figure 3 is shown the fully inward position Figure 5 is an enlarged longitudinalverti- Outer extremity beyond the screw threaded '80 of the said ram. Figure 4 discloses the ram in the said fully inward position,-and in addition the locking sleeve 30 with its shoulder 33 abutted against the inner face of the end portion of the housing, and the lock nut 32 forcibly engaged against the outer face of the said portion 15 of the housing, so that the locking sleeve is locked against movement in either direction. Since the stem 22 by being threaded in the locking sleeve is positively prevented from movement in either direction relative to the locking sleeve, the consequence is that the ram 24 is then se curely locked in the full inward position. Under working conditions a slush pump is used to force fluid under pressure through the pipes and the duct 34, against the back of the ram in the preventer housing, so that with the locking sleeve and the lock nut in the positions shown in Figures 2 and 3, the ram 24 carrying the stem 22 moves inwardly through the bores 19 and 20. When the ram has in this manner been moved to its extreme inward position, disclosed in Figures 3 and 4, the locking sleeve, easily accessible for manipulation because of the open formation of the housing 8, the shoulder 33 of the locking sleeve being formed hexagonal or in any other suitable form, may be quickly reached and gripped by a suitable tool and rotated upon the stem into forcible engagement with the inner face of the end portion 15 of the housing, whereupon the lock nut 32 is rotated on the said locking sleeve from the position shown in dotted lines at 32a in Figure 4 to the locking position in forcible engagement with the outer face of the portion 15 of the housing 14. With this adjustment of the parts of our appurtenance, the ram is positively and forcibly locked against displacement from its fully inward position, and the tool 6 is effectively prevented from being blown out of the well.

. It will be observed'that the comparatively few and easy operations required for manipulating the rams as described above en-- able applying and locking the rams so quickly that the dangers and losses consequent upon a slow and ineffective manipulation of the rams are prevented and the sand, oil, and water forced from the well during a blow are not given a chance to blow out the packings of the rams and render the blow out preventer useless. It is believed also to be obvious that our device is a simple one, cheap to manufacture and extraordinarily effective and rugged and otherwise admirably adapted for the purposes for which it is designed.

It is to be definitely understood that we do not desire to limit the application of this invention to the particular modification set out herein to illustrate the principles thereof, and any change or changes may be made in material, structure, or combination of the locking sleeve, said locking sleeve and said lock nut adapted to engage portions of the housing to lock the stem against lon tudinal movement in the housing and lock t 0 ram in its osition.

2. A 100 ing structure of the type described for a blow out preventer comprising a housing mountable on the preventer, a ram stem connected to the ram of the preventer and slidable in the housing, fluid pressure means for initially actuating said ram, and means for locking said ram against return movement comprising alocking sleeve screw threaded on the outer end portion of the sleeve having a shoulder for abutting an inner portion of the housing, a-lock nut on said sleeve for abutting an outer portion of the housing for locking said sleeve against movement. 1

3. An attachment for a blow-out preventer head, comprising a housing adapted to be mounted thereon, a stem slidable in the housing and rotatably connected with a ram of the preventer head, rotatable and slidable means adapted to be moved into a position in which it cooperates with a portion of the housing and the stem whereby the stem can be moved longitudinally only by rotating 1t.

4. An attachment for a blow-out preventer head, comprising a housing ada ted to be mounted thereon, a stem slida 10 in the housing and rotatably connected with'a ram of the preventer head, rotatable and slidable means adapted to be moved into a position in which it cooperates with a portion of the housing and the stem whereby the stem can be moved longitudinally only by rotating t, said means being capable of being initially positioned with respect to the housing so as not to prevent sliding and rotary movement of the stem, said means being capable of being subsequently moved into such a relation with the housing that the stem is locked against sliding and rotary movement and can then be moved longitudinally only by rotating 1t.

5. An attachment for a blow-out preventer head, comprising a housing adapted to be mounted thereon, a stem slidable in the housing and rotatably connected with a ram of the preventer head, slidable and rotatable means adapted to be moved into a position in which it cooperates with a portion of the housing and the stem whereby the stem can be moved longitudinally only by rotating it, said means being capable of being initially positioned with respect to the housing so as not to prevent sliding and rotary movement of the stem, said means being capable of being subsequently moved into such a relation with the housing that the stem is locked against slidin' and rotary movement and can then be move longitudinally only by rotating it, said means being also capable of being arranged with respect to the stem and the housing so that the stem is permitted free rotary movement, while permitted longitudinal sliding movement in one direction only.

In testimony whereof we affix our signatures.

JOE HENRY NICKS. ELERY EDWARD MOSHER.

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