子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Field installable rod guide and method | US862323 | 1997-05-23 | US5873157A | 1999-02-23 | Charles M. Hart; H. Milton Hoff, Jr.; John L. Tillman, Jr.; Lindell R. Trout; Stephen L. Witte, Sr. |
| A rod guide is provided for centering a sucker rod within a tubular string that powers the pump within a well bore. The rod guide comprises a spool securable to the rod and having tipper and lower end members thereon, and a plastic material sleeve extending between the upper and lower end members. The sleeve may be mounted to the rod during a molding operation. The rod guide further includes a guide body which may be machined from an ultra-high molecular weight polyethylene material which has desired abrasive and wear characteristics. In one embodiment, the body is rotatable about the spool. A slot within the guide body and scalloped-shaped cut-outs at both ends of the guide body provide fluid communication between an annulus formed between the O.D. of the sleeve portion of the spool and the I.D. of the guide body. An improved method of positioning a guide body on a spool member affixed to a rod is disclosed, and a test apparatus for testing the characteristics of a rod guide is also simplistically illustrated. | ||||||
| 182 | Well completion device and method of cementing | US679674 | 1996-07-12 | US5791416A | 1998-08-11 | Kenneth M. White; Stephen Bruce Mitchell |
| A method of cementing a production casing in a borehole having a surface casing therein wherein cement is pumped down through the production casing thereby cementing the production casing into the borehole and the surface casing. Prior to pumping a special production casing section carrying a tubular expandable resilient bladder is installed in the production casing. The bladder has flanges at either end and slots passing through the flanges. The bladder has an internal thread at one end which mates with an external thread on the casing section thereby anchoring the bladder. The other end of the bladder is free. When installed there is clearance between the bladder and the surrounding surface casing. This permits the bladder to expand upwardly when cement is pumped through and when there is a sufficient head of cement after pumping the bladder collapses and provides a good seal between the production casing section and the surface casing section. | ||||||
| 183 | Extended wear rod guide and method | US821716 | 1997-03-20 | US5755284A | 1998-05-26 | Charles M. Hart; H. Milton Hoff; Randall G. Ray; Stephen L. Witte, Sr. |
| A rod guide is provided for centering a sucker rod within a tubular string that powers a pump within a wellbore. The rod guide comprises a rotor secured to the sucker rod and having upper and lower stop surfaces thereon, and a sleeve formed from metal to substantially increase the life of the rod guide. The rod guide stator has an elongate slot extending along its axial length. The stop surfaces limit axial travel of the stator on the sucker rod, and the sleeve prevents the stator from engaging the sucker rod. The sleeve may be retained on the rod by a clip, and plastic end members then molded over the clip and the ends of the metal sleeve. The stop surfaces may be formed by a ring member spaced axially between the upper and lower ends of the sleeve. | ||||||
| 184 | Rod guide and method of an apparatus for installing it on the shank of a rod | US518592 | 1995-08-14 | US5613556A | 1997-03-25 | Donald E. Sable; Donald E. Sable, II |
| A guide for the rods of a rod string having a plurality of of units spaced longitudinally on the shank of the rod to provide a flex rod portion therebetween and a method of and apparatus for installing the guide unit on the shank. | ||||||
| 185 | Resilient spider for well installation | US291375 | 1994-08-16 | US5465791A | 1995-11-14 | Joel S. Loitherstein |
| A resilient spider is circumferentially mounted on a well section and has extension arms which, in a flexed condition, allow a desired vertical movement of the well relative to an auger in a borehole, and in an unflexed condition, may be used to secure the well in circumdisposed relationship to the lower end of the auger. | ||||||
| 186 | Well cleaning tool with scratching elements | US78542 | 1993-06-16 | US5419397A | 1995-05-30 | J. Scott Reynolds; Robert L. Sloan |
| A tool for cleaning oil, gas, and water well wall casing is disclosed. The cleaning tool includes a cylindrical member and a helical swath of scratching elements affixed to the side walls of the cylindrical member positioned for scouring the interior wall of the casing. Also included in the side walls of the cylindrical member is a helical channel adjacent to the swath of scratching elements. Typically, a workstring maneuvers the tool through the casing under mechanical force. Fluid is circulated through the channel of the tool to carry to the surface the loosened debris scoured from the interior wall of the casing. A method of cleaning a well casing is also disclosed. The method includes the use of a tool with scratching elements and flow channels, which tool can be used either with or without cleaning solvents. | ||||||
| 187 | Helical rod guide | US997160 | 1992-12-23 | US5277254A | 1994-01-11 | Paul B. Rullman; Edward L. Olinger; H. Milton Hoff |
| A rod guide for use with a rotating progressing cavity pump rod string which minimizes the resistance offered thereby to the axial flow of well fluids. This rod guide decreases turbulence and thereby reduces internal abrasion of the rod and tubing wear together with energy demand. The helical guide may employ either one or two lead vanes. | ||||||
| 188 | Enhanced flow tool positioner | US277910 | 1981-06-26 | US4448248A | 1984-05-15 | Edward C. Schwind |
| A well tool positioner is adapted for positioning the tool in a desired relation within a well pipe. The positioner includes a generally cylindrical resilient body adapted to be closely mounted around a tool with the major outside diameter of the body being substantially no larger than the outside diameter of the tool. At least three support vanes are formed with the body as an integral member with each vane being generally ellipsoidal in cross-section and extending perpendicular from the axis of the body and with the major axis of the generally ellipsoidal shape extending along the axis of the body. The body defines an exterior annular recess in the vicinity of the support vanes such that the recess provides an increase in effective flow area between the body and the outer tips of the vanes which at least partially compensates for the decrease of such flow area as caused by the total thickness of the vanes. | ||||||
| 189 | Drill pipe protector | US3588199D | 1969-08-11 | US3588199A | 1971-06-28 | HOPMANS ARTHUR H |
| MY INVENTION IS A DRILL PIPE PROTECTOR COMPRISING A SPACING MEANS AND AN ATTACHING MEANS AND CHARACTERIZED BY A MEANS
FOR INDUCING A COMPRESSIVE STRESS AT THE WEARING SURFACE TO CLOSE AND SEAL CUTS. |
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| 190 | Drill collar for protecting drill string | US3480094D | 1968-03-21 | US3480094A | 1969-11-25 | MORRIS JAMES B N |
| 191 | Casing centralizer with replaceable wings | US10113761 | 1961-04-06 | US3080926A | 1963-03-12 | REMP JR THOMAS E |
| 192 | Drill collar stabilizer | US74793458 | 1958-07-11 | US3063759A | 1962-11-13 | MOORE STANLEY C; ROLLINS HENRY M; BACHMAN WILLIAM S |
| 193 | Drill string bushing tool | US41324654 | 1954-03-01 | US2715552A | 1955-08-16 | LANE JOHN J |
| 194 | Protective guide device for well instruments | US68783846 | 1946-08-02 | US2651199A | 1953-09-08 | COLLINS CHARLES P; BROKAW CHARLES A |
| 195 | Rubber sleeve protector for drill pipes | US74221047 | 1947-04-17 | US2604365A | 1952-07-22 | HOWARD RALPH H |
| 196 | Cutter for drill pipe protectors | US8256749 | 1949-03-21 | US2565274A | 1951-08-21 | SIMPSON CLYDE R |
| 197 | Method of manufacturing well drill pipe protectors | US52728344 | 1944-03-20 | US2433042A | 1947-12-23 | GRAHAM ADELBERT M |
| 198 | Drill pipe protector | US39333541 | 1941-05-14 | US2368415A | 1945-01-30 | GRANT JOHN M |
| 199 | Casing protector and booster | US29225739 | 1939-08-28 | US2352412A | 1944-06-27 | DAVID SANDSTONE HARVEY |
| 200 | Mining machine chain bit and holder therefor | US37355741 | 1941-01-08 | US2328134A | 1943-08-31 | FULKE FRANK L |
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