Modular Well Plunger And System For Use Of Same In A Well Bore

Abstract

A variable volume modular well plunger with fishing neck segment having an upper fishing neck receiver and a lower threaded receiver and defining therebetween an annular chamber, at least one extension segment having a first end threadedly engaging the lower threaded receiver and a second end and defining therebetween an extension annular chamber communicating with the fishing neck annular chamber; and an end means for sealing chamber; a loading means for charging a treatment material; a means for deploying the plunger into a well bore; and a means for diffusing the treatment material at a desired position in the wellbore. Surface treatments adapted to provide at least one desired characteristic interaction between the plunger and tubing through which it passes selected from the group of wear pads, spiral brushes, non-sprial brushes, wobble washers, grooved surface, and interlocking expandable may be used alone or in any combination of multi-surface configurations.

Having thus described the invention, I claim: 
     
         1 . A modular well plunger apparatus comprising:
 a. a modular plunger having—
 i. a fishing neck segment having an upper fishing neck receiver at an upper end thereof and a lower threaded receiver and defining therebetween a fishing neck annular chamber, 
 ii. at least one extension segment having a first end adapted to threadedly engage the lower threaded receiver and a second end and defining between the first and second ends an extension segment annular chamber in communication with the fishing neck annular chamber; and 
 iii. an end means for sealing the second end of a terminal extension segment; 
   b. a loading means for charging a treatment material into an aggregated chamber volume defined by the fishing neck annular chamber in communication with an internal volume of each additional segment;   c. a deployment means for deploying the plunger into a well bore; and   d. a release means for diffusing the treatment material at a desired position in the wellbore,   whereby, a variable-volume plunger can be assembled having a desired aggregate internal volume, which the internal volume can be filled with a treatment material, then deployed into a desired position in a well bore.   
     
     
         2 . The plunger apparatus of  claim 1  further comprising a surface treatment adapted to provide at least one desired characteristic interaction between the plunger and an inner surface of the tubing through which it passes. 
     
     
         3 . The plunger apparatus of  claim 2 , each surface treatment being interchangeably retained between a pair of retainer rings. 
     
     
         4 . The plunger apparatus of  claim 2 , the surface treatment selected from the group of wear pads, spiral brushes, non-sprial brushes, wobble washers, grooved surface, and interlocking expandable. 
     
     
         5 . The plunger apparatus of  claim 4 , each surface treatment being interchangeably retained between a pair of retainer rings. 
     
     
         6 . The plunger apparatus of  claim 1  further comprising more than one different surface treatment adapted to provide at least two desired characteristic interaction between the two different segments of the plunger and an inner surface of the tubing through which they pass. 
     
     
         7 . The plunger apparatus of  claim 6 , each surface treatment being interchangeably retained between a pair of retainer rings. 
     
     
         8 . The plunger apparatus of  claim 6 , the surface treatments selected from the group of wear pads, spiral brushes, non-sprial brushes, wobble washers, grooved surface, and interlocking expandable. 
     
     
         9 . The plunger apparatus of  claim 8 , each surface treatment being interchangeably retained between a pair of retainer rings. 
     
     
         10 . A chemical delivery system for delivering a variable volume of well treatment material into a well bore, the system comprising:
 a. a reservoir of well treatment material;   b. a chamber communicably connected to a top of the well head adjacent a sales flow line and substantially disposed on top of a tubing string and operably disposed thereon and including a ball check valve device which controls communication between a first section of said chamber which receives said flow enhancing chemicals therein from said source for delivery into the well and a second section of said chamber which communicates said flow enhancing chemicals received from said first section to a plunger which is movably disposed along said tubing string as a function of pressure within said tubing string in said well, and means for retaining said ball valve in one of an open position and a closed position as a function of the well being shut in, wherein said ball check valve device includes a ball valve cage in the first section, a first opening formed in said ball valve cage adjacent a first end, a second opening formed at a second end of said ball valve cage, a ball retainer extending inwardly from said ball valve cage and disposed between said ends of said ball valve cage, a ball valve movably disposed within said ball valve cage such that said ball valve can be disposed between the first closed position wherein said ball valve is seated on an annular seat to prevent fluid flow to pass therethrough at said first end and the second open position wherein said ball valve is seated against said second opening at said second end wherein fluid flow is permitted to pass through said first opening and through to said second section and which further includes a dip tube having a first end and a second end, wherein said dip tube is generally movably disposed within said second section and wherein said first end of said dip tube contacts said ball valve under force of the well and moves said ball valve to said open position;   c. the plunger having—
 i. a fishing neck segment having an upper fishing neck receiver at an upper end thereof and a lower threaded receiver and defining therebetween a fishing neck annular chamber, 
 ii. at least one extension segment having a first end adapted to threadedly engage the lower threaded receiver and a second end and defining between the first and second ends an extension segment annular chamber in communication with the fishing neck annular chamber; and 
 iii. an end means for sealing the second end of a terminal extension segment, 
   whereby, whereby, a variable-volume plunger can be assembled having a desired aggregate internal volume, which the internal volume can be filled with a treatment material, then deployed into a desired position in a well bore.   
     
     
         11 . The system of  claim 10  further comprising a surface treatment adapted to provide at least one desired characteristic interaction between the plunger and an inner surface of the tubing through which it passes. 
     
     
         12 . The system of  claim 11 , each surface treatment being interchangeably retained between a pair of retainer rings. 
     
     
         13 . The system of  claim 11 , the surface treatment selected from the group of wear pads, spiral brushes, non-sprial brushes, wobble washers, grooved surface, and interlocking expandable. 
     
     
         14 . The system of  claim 13 , each surface treatment being interchangeably retained between a pair of retainer rings. 
     
     
         15 . A modular well plunger apparatus comprising:
 a. a modular plunger having—
 i. a fishing neck segment having an upper fishing neck receiver at an upper end thereof and a lower threaded receiver and defining therebetween a fishing neck annular chamber, 
 ii. at least one extension segment having a first end adapted to threadedly engage the lower threaded receiver and a second end and defining between the first and second ends an extension segment annular chamber in communication with the fishing neck annular chamber; and 
 iii. an end means for sealing the second end of a terminal extension segment; 
   b. at least one surface treatment adapted to provide at least one desired characteristic interaction between the plunger and an inner surface of tubing through which it passes;   c. each surface treatment being interchangeably retained between a pair of retainer rings;   d. a loading means for charging a treatment material into an aggregated chamber volume defined by the fishing neck annular chamber in communication with an internal volume of each additional segment;   e. a deployment means for deploying the plunger into a well bore; and   f. a release means for diffusing the treatment material at a desired position in the wellbore,   whereby, a variable-volume plunger can be assembled having a desired aggregate internal volume, which the internal volume can be filled with a treatment material, then deployed into a desired position in a well bore.   
     
     
         16 . The plunger apparatus of  claim 15 , the surface treatment selected from the group of wear pads, spiral brushes, non-sprial brushes, wobble washers, grooved surface, and interlocking expandable.