Patent EA-001565-B1 (EA)
Title: Method and device for production of hydrocarbons
Inventor: GANELIN BORIS
IPC: E21B43/12
Filed: 1997-11-12
Abstract: 1. A method of production of hydrocarbons, comprising the steps of introducing into an oil well a production pipe having an inlet to be located substantially in a region of a well bottom and an outlet to be located substantially in a region of a well head, so that an oil-gas mixture flow flows from the inlet to the outlet of the production pipe; and increasing in the production pipe a resistance to movement of a gas phase relative to an oil phase of the oil-gas mixture by subdividing at least a portion of the production pipe into a plurality of passages each having a cross-section which is a fraction of a cross-section of the production pipe and extending in a direction from the inlet to the outlet of the production pipe so as to subdivide said oil-gas mixture flow into a plurality of individual oil-gas mixture flows which have a fraction of a cross-section of said oil-gas mixture and flow simultaneously in a direction from the inlet to the outlet of the production pipe. 2. A method as defined in claim 1, wherein said subdividing includes forming a plurality of individual passages which extend concentrically with one another in a direction from the inlet to the outlet of the production pipe, so that the individual oil-gas flows simultaneously flow through the individual concentric passages. 3. A method as defined in claim 1, wherein said subdividing includes forming a plurality of passages which extend substantially parallel and side by side with one another in a direction from the inlet to the outlet of the production pipe, so that the individual oil-gas flows flow simultaneously through the side-by-side passages. 4. A method as defined in claim 1, wherein said subdividing includes forming a plurality of individual passages through which the individual oil-gas flows flow simultaneously in a direction from the inlet to the outlet Of the production pipe; and changing a geometry of the individual passages in direction of movement of the individual oil-gas flows. 5. A method as defined in claim 1, wherein said subdividing includes forming a plurality of passages located side by side with one another through which the individual oil-gas flows flow simultaneously in a direction from the inlet to the outlet of the production pipe so that a number of passages in a direction of flow of the oil-gas mixture changes at different heights of the production pipe. 6. A device for production of hydrocarbons, comprising a production pipe to be introduced into an oil well and having an inlet to be located in a region of a well bottom and an outlet to be located in a region of a valve head, so that an oil-gas mixture flow flows from the inlet to the outlet of the production pipe; and means for increasing in said production pipe a resistance to movement of a gas phase relative to an oil phase of the oil-gas mixture, said increasing means include means for subdividing at least a portion of said production pipe into a plurality of passages having a reduced cross-section which is a fraction of a cross-section of said production pipe and extending from said inlet to said outlet of said production pipe, so as to subdivide said oil-gas mixture flow into a plurality of individual oil-gas mixture flows. 7. A device as defined in claim 6, wherein said individual passages extend concentrically with one another. 8. A device as defined in claim 6, wherein said individual passages extend substantially parallel to one another.