CIM Oct-2016, April - 2016,CIM Oct-2015, April - 2015, April - 2014, Oct-2014 Question Papers; Machine Drawing KEY (solution) Design(DME) Key - solution. 2.4 Stuffing Box Assembly: For slurry, particularly Ash slurry applications, Lantern Ring is located to the far end, near the Expeller and thereafter 5/6 Numbers square packing of 20mm size.
US3209830A - Stuffing box assembly - Google Patents US3209830A - Stuffing box assembly - Google Patents Stuffing box assembly Info Publication number US3209830A US3209830A US26886563A US3209830A US 3209830 A US3209830 A US 3209830A US 26886563 A US26886563 A US 26886563A US 3209830 A US3209830 A US 3209830A Authority US Grant status Grant Patent type Prior art keywords polished rod extension tube annulus box pumping Prior art date 1963-03-29 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 - Lifetime Application number Inventor Gerald H Orr Mcguire Lewis John W Tynan Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ConocoPhillips Holding Co Original Assignee ConocoPhillips Holding Co Priority date (The priority date 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 date listed.) 1963-03-29 Filing date 1963-03-29 Publication date 1965-10-05 Grant date 1965-10-05 Links. Images. Classifications.
E— FIXED CONSTRUCTIONS. E21— EARTH DRILLING; MINING. E21B— EARTH DRILLING, e.g.
DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS. E21B33/00— Sealing or packing boreholes or wells. E21B33/02— Surface sealing or packing. E21B33/03— Well heads; Setting-up thereof. E21B33/068— Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells. E21B33/072— Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells for cable-operated tools Description. ORR ETAL STUFFING BOX ASSEMBLY Filed March 29, 1963 sa fmmwlllgiqir l l 'W C45 w-M INVENTORS GE RAL D H.
O R R LEWIS MCGURE JOHN w. TYNAN ATTOPNY United States Patent O 3,209,830 STUFFING BOX ASSEMBLY Gerald H. Orr, Cody, Wyo., and Lewis McGuire, Midland, aud.lohn W. Tynau, Houston, Tex., assiguors to Continental Oil Company, Ponca City, Okla., a corporation of Delaware Filed Mar.
29, 1963, Ser. 268,865 12 Claims. 166-84) This invention relates to pumping equipment for producing petroleum from subterranean formations.
More particularly, the invention relates to stufng box assemblies used for capping the upper end of an oil well tubing string, and to seal around the polished rod of a string of sucker rods used in.a reciprocating oil well pump. Various types of stuing boxes have heretofore been proposed and utilized in the petroleum industry for providing a tight seal around the polished rod at the upper end of a string of sucker rods used in a conventional sucker rod reciprocating pump for producing oil from underground formations. These stutling boxes also function to cap or seal off the upper end of the tubing string of the oil well and are generally positioned above the pumping T which diverts the oil from the tubing string to a ow line for conveyance to storage facilities. It has been generally characteristic of stutling boxes that these devices include a housing through which the polished rod of the sucker rod string passes, and further include some type of packing enclosed within the housing and around the polished rod. The stuing box also conventionally includes a threaded sleeve around the housing which is formed integrally with a compression ring which extends down into the housing and bears against the packing therein. By adjusting, from time to time, the position of the threaded sleeve on the housing, the packing may be compressed to a greater degree to compensate for wear of the packing by the continuous reciprocation of the polished rod therethrough, In some of the more recent innovations in stuffing box construction, it has been proposed to add a source of lubricating fluid to the stuinng box assembly so that lubricant may be constantly fed into the stuffing box to continuously lubricate the polished rod as it reciprocates through the stuing box.
The provision of lubricant in this manner, of course, reduces the frictional wear of the polished rod on the packing and also 1assists in maintaining the peripheral surface of the polished rod clean and free `of deleterious materials. Despite the improvement which is effected in the performance of stuffing boxes by the inclusion therein, or combination therewith, of a source of lubricant which provides continuous lubrication of the polished rod stuffing boxes have still been characterized in many cases by a foreshortened `operating life as a result of burning out of the seals of the stufiing box, failure of the packing or other similar malfunction which permits leakage to develop through the stud-ing box around the polished rod. Such failures are engendered by several conditions which may be present in -greater or lesser degree in any pumping situation.
Thus, in some wells, Very high pressures are developed in the flow line of the Well, as well as in the tubing string, and these pressures increase the wear to which the stuftling box seals around the polished rod are subjected. Also, if the conditions at the surface of the ground around the well are extremely dusty, the polished rod picks up a substantial amount of dust and dirt on its surface as it is pulled upwardly through the stuing box and this dirt is then carried down through the packing of the stutling box, wearing away the packing and destroying the seals of the stuing box. This condition is aggravated where the Huid being pumped from the well is especially dirty or is saline or is highly corrosive. 3,209,830 Patented Oct. 5, 1965 In such instances, not only are the deleterious fluids carried into the stuiing box through the seals thereof, but the corrosive materials in the well fluids may attack and pit the polished rod so that its roughened outer peripheral surface quickly destroys the stulilng box seals and packing or at least necessitates frequent adjustment of the packing compression.
In almost all situations, the stuifing box will require daily maintenance and, in effect, continual ladjustment of the compression on the packing therein in order to maintain a tight seal around the polished rod and avoid loss of production fluids through the stuffing box. The present invention contemplates an improvement in stuffing box assemblies and, more specifically, proposes a novel stufng box assembly which enables the integrity of the stuffing box seals and the performance of the stufling box packing to be constantly and automatically monitored, and which assures a substantial increase in the average trouble-free `service life of stuffing box assemblies.