Device for improving oil and gas recovery in wells
AssigneeSorowell Production Services LLC
InventorsVladimir Shaposhnikov, Leonid Levitan, Walter Breidenstein
Life of this patent
Estimating the term…
Abstract
A device for improving recovery of hydrocarbons through a well by creating, regulating and maintaining under the device a calculated bottomhole pressure at a desired level and creating above the device a two-phase gas-liquid homogenous flow for efficient lifting of hydrocarbons to a surface, the device has a body having a central through-going opening with a shape corresponding a shape of a laval nozzle and with a cross section which changes steplessly and gradually, and a mandrel attachable to a tubing and associated with the body without interfering with a flow of fluids.
Claims21
A well device configured to be installed through well tubing into a landing nipple of the well comprising:
- a member defining a laval nozzle;
- a coupling portion fluidly coupled to the laval nozzle;
- and
- a plurality of sealing members annularly disposed about the coupling portion, wherein said sealing members are adapted to resist movement of the coupling member with respect to the landing nipple.
A well device comprising:
- a member defining a laval nozzle and a tool engaging portion;
- a means for coupling the laval nozzle to a landing nipple, and for defining a water collection cavity, wherein said member defines a through passage which fluidly couples the collection cavity with the laval nozzle.
A well construction comprising:
- a well tubing having a through bore with a first inner diameter;
- a landing nipple defining a second through bore having a second inner diameter smaller than the first inner diameter;
- a well device having, a member defining a laval nozzle, a coupling member defining third through bore fluidly coupled to the laval nozzle, said coupling member having a plurality of compressible sealing members configured to fluidly seal said second through bore and support the coupling member in the landing nipple;
- wherein said member is disposed outside of the landing nipple.
A device for improving recovery of hydrocarbons from a well comprising:
- a body defining a central throughgoing opening with a shape corresponding to a laval nozzle, said laval nozzle having a cross-section which is changed steplessly and gradually;
- and
- a coupling member coupled to said body configured to couple said body to tubing, said body being located outside said coupling member in a position selected from the group consisting of below said coupling member in a direction of flow and above said mandrel in the direction of flow.
A device for improving recovery of hydrocarbons from a well comprising:
- a body defining a central throughgoing opening having a shape corresponding to a laval nozzle, said opening further having a cross-section which is changed steplessly and gradually;
- and
- a coupling member attachable to said body and to a tubing, so as to couple said body to the tubing, said body being located outside said coupling member and being aligned with said coupling member without interfering with a flow of fluids, wherein said body defines a transverse passage so as to fluidly couple an outside surface of the body to the laval nozzle.
Dependencies are inferred from the claim text.