US2168837A - Oil well rig - Google Patents

Description

Aug. 8, 1939. L. M. YORK 2,168,837

011. WELL am Filed Dec. 20, 1937 3 Sheets-Sheet l Inventor lmz nymxrk Aug. 8, 1939. L, Y RK 2,168,837

OIL WELL RIG Filed Dec. 20, 1957 I 3 Sheets-Sheet 2 Eng 4| i'fi 19m;

Aiiorneys L. M. YORK OIL WELL RIG Aug. 8, 1939.

Filed Dec. 20, 1937 3 Sheets-Sheet- 3 Inventor larzfi'afi M $1 73 Patented Aug. 8. 1939 UNITED STATES PATENT OFFICE 2 Claims.

My invention relates to improvements in oil well rigs of the portable derrick type for use particularly in pulling and stacking well tubing although, as will presently appear, it is adapted for other uses such as in handling drill stem and other pipe and rods and in servicing gas, water, and other wells.

By way of premise, oil wells, as is well known, require frequent servicing by way of pulling and detaching from each other the sections of well tubing to clear the line for proper operation in drilling.' Well tubing is manufactured in very long lengths and must be pulled from the well with a direct vertical pull and stacked on end without any great inclination from the vertical otherwise the tubing is subjected to bending the disadvantages of which will be manifest. Heretofore sucli pulling of well tubing has been accomplished by means of rigs of the derrick type erected over the well as occasion required. This'is expensive, time consuming, and attended with considerable danger to operators. Furthermore it requires a separate rig for each well.

Having the foregoing in mind, it is the principal object of my invention to provide a portable rig movable from well to well and equipped especially for pulling, with a direct vertical pull, long lengths of well tubing from the well and stacking the same on end without inclining them from the vertical to such an extent as to cause them to bend, and which, as compared with the derrick equipment, above mentioned, is more effi-.

cient; durable and economical in operation.

My invention also comprehends other objects, all of which will become readily apparent when the succeeding description is read in conjunction with the drawings accompanying and forming part of this specification, it being understood that the invention resides in the features of construction and combination of parts specifically treated in said description, illustrated in the drawings, and defined in the claims appended hereto.

In said drawings- Figure 1 is a view in side elevation of a rig embodying my improvements,

Figure 2 is a view in rear elevation of the boom and partsv appurtenant thereto,

Figure 3 is a view in transverse section taken on the line 3-3 of Figure 2, looking downwardly and drawn to an enlarged scale,

Figure 4 is a fragmentary view in front elevation of the parts shown in Figure 3,

Figure 5 is a detailed fragmentary view in top plan ofmeans for seeming the finger board to the boom,

Figure 6 is a view in top plan, parts shown in section, of one of the sectionsof the boom,

Figure 7 is a view in vertical'section of parts 5 of two adjoining boom sections, the sections being disassembled,

Figure 8 is a detailed view in vertical section illustrating the means for attaching two boom sections together, and

Figure 9 is a fragmentary view in front elevation of the lower end of the boom, parts broken away, and parts shown in section.

Referring to the drawings by numerals, in the illustrated embodiment thereof, the rig of my inl5 vention comprises a carriage I mounted in any suitable manner on rails 2 for movement along the same toward and from' the well location indicated at 3. The carriage I supports the usual hoisting mechanism designated as a unit by the numeral 4 and including the hoisting drum assembly 5.

In front of the carriage I is a gin pole 6 suitably supported in a base block I encased by an angle iron shoe 8 resting on the rails 2 for sliding movement along the same with the carriage I. The gin pole 6 may be of any suitable constructionand has mounted at the upper end thereof the usual sheave 9. Guy wires I0 suitably attached to the upper end of the gin poie 6 and anchored in any suitable manner sustain the gin pole in vertical position against forward tilting.

In front of the gin pole 6 is a boom I I supported at its base on the rails 2 by means of a block I2, similar to block 1, and a shoe I3, similar to shoe 8, and for rocking movement on said rails. A yoke I4 pivotally connected to the blocks '5 and I2 anchors the base of the boom II at a suitable distance from the gin pole 6. Vertical rocking movement of the boom II is im- 40 parted thereto to lift the same into upstanding position by means of the usual cable represented by dotted lines, at I5, and extending from the drum assembly 5 over the sheave 9 with one end .conlnected to an intermediate part of boom as As shown in Figure 1 the boom is designed to be positioned close to the well 3 and rocked thereover into substantially vertical position, that is to say, into a slightly forwardly inclined position. At its upper end the boom II has suitably secured thereto to project forwardly therefrom a yoke I'I- serving as 'a mounting for the usual sheave assembly I8 for the usual block and tackle including the hoisting cable I8 extending from the drum assembly I and the block 28 carried in.

the bight of the cable l8. An idler 2 l. is provided on the upper end of the boom II on the rear thereof for guiding the cable l8 at this point. In the described position of the boom II and by virtue of the yoke H the cable l8 and block 28 are suspendedfrom the sheave assembly i8 in substantially vertical alignment with the well tubing 22 so that by connecting said block to the said tubing the latter may be pulled from the well 3 by a pull directed thereagainst axially thereof. The block 28 is connected to the well tubing 22 by means of any suitable clamp or coupling represented at 23. Forwardly and rearwardly extending guy wires, or cables, 24 and 28 secured to the yoke l1, as at 28, and suitably anchored secure the boom II in the described position.

With specific reference to the boom H, this member is formed of sections reinforced at their juncture with each other and further constructed to impart great strength and rigidity thereto without unduly increasing the weight thereof. Each section 21 comprises four longitudinal tubular members 28 connected together by intermediate tubular cross members 29 and diagonal tubular struts 38 both welded in position. with the exception of the top section 21 the others are provided at what may be termed upper ends thereof with tubular sockets 3| sleeved and welded onto the ends of the members 28 and in which the lower ends of the next higher section member 28 are telescopically fitted. Extendin between the sockets ll of each section 21 are cross bars 32 similar to bars 29. Corner brackets 33 are welded to the sockets 33 and bars 32 extending therefrom. Similar brackets 34 are welded to the lower ends of members 28 and the lowermost bars 28 of the next higher section. Bolts 35 passing through the brackets 33 and 34 of adjoining sections 21 secure the sections of the boom in assembled relation. The boom II is mounted on the block |2 by means of studs 36 upstanding from said block and over which the members 28 of the lowermost section 21 telescope. Turn buckles 31 having hooked ends 38 taking in eye bolts 38' in the block i2 and connected by hooked links 38 to intermediate cross members 29 of the lowermost section 21 anchor the boom H to said block l2.

The described boom II is braced against forward flexing by means of a cable strut extending from approximately midway of the upper,

section 21 to points adjacent the lower ends of the lowermost section 21 and along the back of said boom. The s'trut has the form of a steel cable 48 looped around a sheave 4| mounted on a cross bar .42 suitably secured to the back of the upper section 21, the cable ends being connected to the members 28 of the lowermost section, one by a turn buckle 43 and the other by welding as at 44. The side stretches of the cable 48 extend along the back sides of the boom over stanchions 45 outstanding at intervals from the boom i1 and preferably welded to the members 28 thereof, said stanchions slidably supporting the cable 48. As will be seen, by taking up on the cable 48 through the medium of the turn buckle 43 the boom may be tensioned uniformly against flexing.

At a suitable point intermediate the ends thereof the boom H has mounted, on an intermediate section 21 thereof, a finger board 45. The finger board 48 comprises a base frame including a front tubular bar 41 extending across the front of said section 21 equi-distantly on each side thereof and a pair of rear horizontal bars 48 inclining from the ends of the bar 41 to the rear members 28 of said section. Suitable clamps 48, including bolts 88, secure the front bar 41 to the front members 28 of said section and the ends of the rear bars 48 to the rear members 28 of said section. The front bar 41 carries a platform 5| extending forwardly therefrom directly in front of the boom. Triangular side platforms 52 extend between the front bars 41 and rear bars 48 on opposite sides of the boom ii respectively. Racking fingers, or rods, 52 extend forwardly from the bar 41 upon opposite sides of the platform ll, the outermost racking fingers being formed heavier than the others. The finger board 48 is equipped with a rear railing for grasping by the operator comprising end posts 84 and top rails 58 extending from the posts to the rear members 28 of said section and to which they are secured by clamps 58 similar to clamps 48. Diagonal braces 81 extend downwardly from the ends of the bar 41 to said section to which they are secured as in the case of the bars 41, 48 and rails 58. As will be seen by means of the described clamps the finger board may be adjusted tov different heights on the boom Referring to the finger board 46 is so designed that in the previously described position of the boom the tackle I8, 28 clears the same in pulling the tubing. Thus an operator may stand on the platform 5| within convenient reach of the upper end of a tubing section as it is pulled and grasp the same. After the tubing sections are pulled they are disconnected from each other, at the usual rotary table 58 the use of which will be understood, and lifted clear of said table by the described tackle. They are then swung forwardly slightly and to one side, or the other, while suspended and lowered in upright position onto the ground. Their upper ends are then manipulated by an operative on the platform 5|, or platforms 52, to incline the same into position between selected racking bars 53 and the tackle disconnected therefrom by the operative in a manner which need not be entered into herein.

As will now be seen, the described invention may be more speedily set up for operation than a stationary derrick and with much less labor and in fact will enable an operator to clean out a well that has sanded up before a permanent rig could be erected on the ground.

The foregoing will, it is believed, sufilce to impart a clear understanding of the construction, use and advantages of my invention without further explanation.

Manifestly the invention, as described, is susceptible of modification without departing from the inventive concept and right is herein reserved to all such modifications falling within the scope of the subjoined claims.

What I claim is:

1. In an oil well rig for pulling well tubing, the combination with a portable hoisting mechanism movable toward and from the well, of a use of the invention, the' boom pivotally mounted at one end of said mechboom, a block and tackle suspended from said 75 yoke for attachment to the well tubing in substantially vertical alignment therewith and operative by said mechanism to pull the tubing, and a finger board vertically adjustable on said boom adjacent the upper end thereof and extending forwardly therefrom between the tackle and boom, the finger board including a platform in front of the boom, a pair of platforms upon opposite sides of the boom, respectively, in the rear thereof, and racking rods extending forwardly of the platforms of said pair upon opposite sides of the front platform. I

said mechanism into upstanding position alongside the well to incline forwardly at a slight angle from the vertical, a block and tackle extending from the upper end of said boom for attachment to the well tubing in substantially vertical alignment therewith and operative by said mechanism to pull the tubing, and a finger board vertically adjustable on said boom adjacent the upper end thereof and extending forwardly therefrom between the tackle and the boom, the finger board including a platform in front of the boom, a pair of platforms upon opposite sides of the boom, respectively, in the rear thereof, and racking rods extending forwardly of the platforms of said pairs upon opposite sides of the front platform.

LANTRIP M. YORK.

Images