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7325619 |
Sucker rod guide installer
A sucker rod guide installation device for installing a sucker rod guide on a sucker rod. The device having a rod positioner for positioning the sucker rod and guiding a portion of the sucker rod...
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7255165 |
Field-installable rod guide
A field-installable rod guide for a rod moveable within an oilfield tubular having an interior tubular surface for driving a downhole pump to pump liquids to the surface through the oilfield...
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7134455 |
Insulator apparatus for vacuum insulated tubing
An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching...
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7108063 |
Connectable rod system for driving downhole pumps for oil field installations
Improved sucker rod joints for down hole petroleum pumping applications are provided within the form factor of standard API sucker rods, such that existing inventory in suitable condition is fully...
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7104318 |
Self-contained centralizer system
A centralizer assembly for centralizing casing inside a riser includes a locking element to move generally radially outward from the casing toward the riser in response to a change in pressure in...
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6814146 |
Annulus for electrically heated pipe-in-pipe subsea pipeline
Apparatus and method for electrically heating a segment of a subsea pipeline are provided. The annulus between the pipes electrically isolates the pipes, but at the ends of the segment the...
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6776232 |
Insert rod guide
An insert rod guide has an elongated cylindrical member with an externally threaded first or upper end of a first diameter and an internally threaded lower or second end of a larger diameter with...
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6595284 |
Wire guard device for wells
A one-piece wire guard device formed of non-metallic material for use in wells includes an inner ring having a split therein defining an opening and having a portion of reduced thickness defining a...
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6457519 |
Expandable centralizer
A centralizer for laterally positioning an instrument in an opening larger in diameter than the diameter of an opening through which the centralizer can freely pass. The centralizer includes spring...
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6352107 |
Wear resistant well pump rod and method for making same
An elongated pump rod or sinkerbar for use in a pump rod string for a downhole reciprocating well pump is provided with an elongated sleeve of high density or ultra high density polyethylene over a...
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6260617 |
Skate apparatus for injecting tubing down pipelines
A method and apparatus which inserts and withdraws tubing from pipes without bending or kinking the tubing. The method and apparatus may be employed to insert and withdraw tubing to depths greater...
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6182754 |
Helical scraper apparatus for a reciprocating sucker rod
A scraper apparatus for a reciprocating sucker rod for prevention of the wearing of grooves in well tubing. The scraper is formed by a body with two opposed spiral vanes extending 180 degrees...
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6152223 |
Rod guide
A rod guide for a cylindrical rod. The rod guide includes a cylindrical body surrounding and coaxial with the rod. A first pair of opposed fins extends from the cylindrical body, each first fin...
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6065537 |
Rod guide with both high erodible wear volume and by-pass area
A rod guide fixedly molded around the shank of a sucker rod string with the rod guide including a radially inner non-erodible zone and a radially outer erodible zone. The non-erodible zone includes...
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6032748 |
Non-rotatable stabilizer and torque reducer
An exemplary stabilizer and torque reducer which will engage a wellbore casing and locate the drill string substantially toward the concentric center of the wellbore casing. The device is capable...
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6016866 |
Rod guide with wear gauge
A rod guide is molded to a sucker rod and includes a plurality of blades, vanes, or fins projecting from the body. At least one of the blades is formed to define a wear gauge with the blade having...
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5833018 |
Drill pipe/casing protector
A non-rotating drill pipe/casing protector is disclosed. The protector has a bi-directional thrust bearing which can be mounted uphole or downhole from the protector. The bi-directional thrust...
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5806591 |
Rod guide
A rod guide for maintaining a rod of a sucker rod string in substantially central position in a well tubing during reciprocal movement of the sucker rod string in the well tubing.
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5755284 |
Extended wear rod guide and method
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...
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5740862 |
Rod guide assembly
A rod guide assembly having a mount rigidly molded on rod shank, a centralizer rotatably mounted on the mount having, closure means between the mount and the centralizer for preventing flow of...
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5727627 |
Well rod centralizer/centralizer stop interface with wear reducing surface
Improved wear interface surfaces on well rod stabilizers and stabilizer stops. Well apparatus includes a rotary tool in a string of tubing extending into a well hole in the earth and a rod...
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5678630 |
Directional drilling apparatus
A well bore communication pulser in a shuttle package is arranged to aid in stabbing the package into the muleshoe receiving bore in the drill string, especially when the muleshoe is located in a...
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5613556 |
Rod guide and method of an apparatus for installing it on the shank of a rod
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...
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5549158 |
Field installed slotted rod guide and method
A rod guide 10 may be installed on a sucker rod by two distinct impacts with a hammer or mallet. The rod guide 10 includes a slot 30 having a throat 38 defining therein a catch section 50 wherein a...
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5547020 |
Corrosion control well installation
Corrosion control cathodic protection for the rod string and the well tubing. Anode assemblies for mounting on the rods of the rod string.
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5494104 |
Snap-on rod guide
A field-installable rod guide firmly grasps the sucker rod to which it is attached and reduces fluid friction to axial movement of the rod guide. The rod guide includes one or more channels for...
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5492174 |
Rod guide with enhanced erodable volume
A rod guide molded in intimate contact with a sucker rod increases the amount of rod guide material available for wear. Adequate bypass area is provided so as not to impede the efficient movement...
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5487426 |
Rod guide with removable vanes
A rod guide with removable vanes provides the capability of using one wear-resistant material for the erodable volume of the rod guide and another, stock material for the body that holds the vanes....
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5394940 |
Sucker rod guide
Rod guides having four axial flutes separating four axial ribs are telescoped over sucker rods for water wells. The bore of the guides have a taper or bell from a tight fitting or snug fitting...
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5372192 |
Drag block for increasing the fluid resistance of well production tubing inadvertently dropped in a cased hole of an oil or gas well
The present invention pertains to a drag block that is attached over the exterior of, or screwed onto as an integral part of, oil well production tubing to increase the fluid resistance of the...
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5358041 |
Rod guide
A rod guide in the form of a substantially cylindrical body molded in intimate contact with a sucker rod includes at least three blades or fins projecting from the body to define a smoothly...
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5277254 |
Helical rod guide
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...
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5247990 |
Centralizer
A centralizer for downhole sucker rods such as those used in oil wells. The centralizer has a central axial aperture for rotatable mounting on a downhole rod of a rod string. The exterior surface...
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5191938 |
Rod guide assembly and method of its installation on a rod shank
A rod guide assembly having a mount moulded on the rod guide shank and a centralizer rotatably mounted on the mount and the method of installing the assembly on a rod guide shank.
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5069284 |
Wear resistant rod guide
Apparatus and method for protecting a producing oil well's sucker rod string from wear as the rod string reciprocates in the well's tubing string. Each rod guide has a network of passages encased...
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4997039 |
Rod centralizer
A centralizer for a pump rod string which minimizes the resistance offered thereby to flow of well fluids therepast having a body provided with two pairs of longitudinally and circumferentially...
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4938285 |
Ultra-high molecular weight polyethylene sucker rod guide
An ultra-high molecular weight polyethylene sucker rod guide for mounting on a sucker rod in multiple, spaced units and preventing, or at least minimizing, contact between the sucker rod and the...
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4858688 |
Sucker rod guide
A sucker rod guide for mounting on a sucker rod in multiple, spaced units and preventing, or at least minimizing, contact between the sucker rod and the tubing which encloses the sucker rod. In a...
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4632468 |
Guide for well pump sucker rod
A well pump sucker rod guide which is a tubular integral body element formed of an elastic minimum friction type material and provided with a longitudinal bore formed along the longitudinal axis of...
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4615543 |
Latch-type tubing protector
Apparatus for protecting tool joints and injection or control tubing of production tubing strings employed in the production of oil and gas. A pair of half-cylinder shaped sections are provided...
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4343518 |
Rod guide apparatus
A rod guide apparatus for a reciprocating rod comprised of two substantially identical half sections which include semicircular recesses therein and which are adapted to be lockingly clamped...
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3650579 |
SUCKER ROD GUIDE
A sucker rod guide having a resilient body and a spring clip embedded in the body for exerting a clamping force on the sucker rod on which the guide is mounted.
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3484141 |
OIL WELL PROTECTOR
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3399730 |
Rod guide or paraffin scraper
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3370894 |
Rod guide
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3330359 |
Self-reversing scraper
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3330358 |
Valved migratory scraper
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3329212 |
Paraffin scraper and rod guide
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3282345 |
Guide and scraper
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3282344 |
Tubing-gripping rod scraper
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