US2218728A - Cementing hook - Google Patents

Description

Patented Oct. 22, 1940 Y 2,218,728 l CEMENTING noox poration oi Delaware Application April 5, 1940, serial No. 321,933

Claims'.

This invention relates to apparatus employed that the cement thoroughly lls the space outsideV the casing at the lower end thereof. The equipment for circulating the cement into' the hole in lo cludes, in the usual arrangement, a cement conducting line running directly from the pump to a closurecap at the upper end of the casing. vWith such an installation the casing cannot be rotated or raised or lowered during theoperation of cir- [5 culating the cement'into position. Thus the operator must rely upon heavy uid pressureexerted upon the cement to try and force-it into position and also upon expensiveyforms of cement lshoes on the casing. Often without complete success. It is an object of my invention to provide an apparatus whereby the casing may be movedr as i desired while the cementing job is beingperformed. I desire to allow rotary movement ofy the casingV and also vertical reciprocation, so that I the cement can be worked about the pipe and 'thus assure that the cement completely lls thelower end of the well. n

' I wish to so support the casing and to connect the'cement pipe thereto, that the' movement of the casing during cementing will :not interfere; with the simultaneous forcing of the cement 'into position. f v

Further objects and advantages of the invention will more clearly appear from the description which follows taken with the drawing herewith in which; Y f

Fig. 1 is a side elevation of the supporting device which tion. ,f

Fig. 2,is a perspective view partly in and the elevators. Y.

, Fig. 3 is a vertical section showing the uppery end of the casing and the cernenting connections therewith. j

In carrying out my invention I employ a swivel Aarranged to rotatably support an elevator B,

neck. 4 iis provided for connection with the ce-` menting hose not shown. I Y 55 The nipple 3 is connected, aty its lower'endto a I employ infcarrying out the invensection, l showing the `hook employed between the swivel cementing hook 24 by a threaded engagement, withina'socket 5 insaidvhook. 'Said' hook has a passage vlv therein for the cement; A lateral threaded opening in said passage has connectionV vwith a flexible 'f metallic hose y'I. Anyfordinary 5 type of rubber or fabric hose may be used. Op-

posed hooks 8 are `formed to be engaged by the hails il'of theelevator B. y

f 'I'he elevator "is ofV ordinary construction. :It

has a body I0 adapted to engage below the upper 10 collar II uponthe casing C. -The upper `end of the casing is closed by `a nipple l2 screwed into the collar I I and having a cap I3 secured thereto by means of a coarsely threaded connection I4.. A lateral threaded port I5 in the nipple I2 provides 15 attachment for the lower end of the flexible hose,A

n 1.- The cap I3 has oppositeupwardlyy extending ears I6 thereon to be engaged by a wrench or bar in screwing up or uns'crewingv the cap. i Y f In vtheoperation of cementing, fluid for cleaning Q0 the well may iirst be circulated from the pump through the goose neck 4, theswivel nipple 3, the cementing hook 2li,Y the flexible hose 'I, the nipple I2 into the casing and the well. Then the cement y When sufficient cement has been pumped into the well, a plug may be inserted above the cement by Y removing the capV I3 and vIrun-l may be then employed to move the plug to the bottom in the usual manner, thus forcing ther cement out of and 30 up aroundthe casing.. f f

Thefcasing may be engaged by the rotary or by pipe wrenchesl or other similar means and rotated as desired without-interfering with the pumping of the cement into position in the well. By thus 35 moving theV casing a proper y positioning of the cement in the hole and about the casing is assured. No special shoes upon the casingor other devices are necessary to assist' in placing the cement. Also, during the process of washing and 40 cementing the casing may be raised and lowered as desired bythe usual hoisting mechanism connectedwith the swivel.

What I claim as new is: y

cluding a swivel, a cementinghook secured thereto, a closure member for the upper end of the casing, an elevator connected, with said hook and engaging about saidcasing, and a flexible cement conducting member connecting said hook and said closure memberto conductl cement into said caslng.

2. A device vfor conducting cement into wellsincludingy av swivel, a uid -conducting passage therethrough, a relatively rotatable nipple there-A may be forced intothe well by the same route. 25

i1. A devicefor cementing casing in wells in-l 45 on, a cementing hook on said nipple, an elevator supported on said hook, a casing engaged by said elevator, andmeans to conduct fluid from said hook to said casing past said elevator.

3. A connection between a swivel and a well casing, including a hook secured to said swivel, said hook having an upper hollow shank thereon -to receive uid from said swivel, a closure means for the upper end of said casing, means on said hook to support said casing. and a flexible fluid conduit connected with said hollow shank and said closure means to conduct iluid from said swivel past said supporting means to said casing.

n line connecting said swivel past said elevator with the interior of said casing.

5. In combination a swivel, a cement hooky thereon,V a hollow shank on said hook to receive uid from said swivel, a casing closed at its upper end, an elevator on said hook engaging said casing, and a fluid conducting line from said hollow 10 shank to said casing.

. HAROLD L. STRADER.

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